Chuck soft claw, forming method of chuck soft claw, workpiece machining method and hybrid machine tool

Abstract

The invention provides a chuck soft claw, a forming method of the chuck soft claw, a workpiece machining method and a hybrid machine tool. The chuck soft claw is a claw supported by the chuck body so as to be movable in a first direction away from the center axis of the chuck body and a second direction close to the center axis. The chuck claw includes: a first holding surface capable of holding a first surface of a workpiece; and a second holding surface capable of holding the cut surface of the workpiece. The hardness of the first holding surface is higher than that of the second holding surface.

Description

Technical Field

[0001] The invention relates to a chuck soft jaw, a forming method of the chuck soft jaw, a workpiece processing method and a hybrid machine tool. Background Art

[0002] Hard jaws that hold a workpiece and soft jaws that hold a workpiece are known.

[0003] As a related art, a rolling chuck using both hard jaws and soft jaws is disclosed in Patent Document 1. In the rolling chuck described in Patent Document 1, one of a trapezoidal V-shaped groove and a trapezoidal protrusion is formed in the hard jaw, and the other of a trapezoidal V-shaped groove and a trapezoidal protrusion is formed in the soft jaw. In addition, in the rolling chuck described in Patent Document 1, the hard jaw is mounted on the main jaw, and the soft jaw is mounted on the hard jaw via the trapezoidal V-shaped groove and the trapezoidal protrusion.

[0004] Patent Document 1: Microfilm of Japanese Utility Model Application No. 58-145447 (Japanese Utility Model Application Publication No. 60-53408) Summary of the invention

[0005] The object of the present invention is to provide a chuck soft jaw, a forming method of the chuck soft jaw, a workpiece processing method and a hybrid machine tool which can shorten the processing time.

[0006] In some embodiments, the chuck soft jaw is supported by the chuck body so as to be movable in a first direction away from the central axis of the chuck body and a second direction close to the central axis. The chuck soft jaw comprises: a first holding surface capable of holding a first surface of a workpiece; and a second holding surface capable of holding a cut surface of the workpiece. The hardness of the first holding surface is higher than the hardness of the second holding surface.

[0007] In some embodiments, the method for forming a chuck soft jaw comprises: a step of attaching a raw material block to the chuck body; and a step of forming a chuck soft jaw from the raw material block while the raw material block is attached to the chuck body. The step of forming the chuck soft jaw from the raw material block includes: forming the first holding surface on the raw material block by processing the raw material block; and forming the second holding surface on the raw material block by cutting the raw material block.

[0008] The workpiece processing method in some embodiments comprises: a process of preparing a chuck soft jaw having a first holding surface and a second holding surface, the first holding surface having a harderness than the second holding surface; a process of mounting the workpiece to the chuck soft jaw supported by a chuck body of a first workpiece holding device so as to be movable in a first direction away from a center axis of the chuck body and a second direction close to the center axis; a process of cutting a first portion of the workpiece while an oxidized surface of the workpiece is held by the first holding surface of the chuck soft jaw; and a process of processing a second portion of the workpiece while a cut surface formed by cutting the oxidized surface of the workpiece is held by the second holding surface of the chuck soft jaw.

[0009] The hybrid machine tool in some embodiments comprises: a plurality of processing devices for forming chuck soft jaws from a raw material block mounted on a chuck body, the chuck soft jaws having a first holding surface for holding an oxidized surface of a workpiece and a second holding surface for holding a cut surface of the workpiece; a first workpiece holding device for holding the workpiece by the chuck soft jaws; and a control device for controlling the plurality of processing devices and the first workpiece holding device. The first workpiece holding device comprises: the chuck body for supporting the chuck soft jaws having the first holding surface and the second holding surface; a first driving device for moving the chuck soft jaws in a first direction away from the central axis of the chuck body or in a second direction close to the central axis; and a rotation driving device for rotating the chuck body around the central axis. The plurality of processing devices include: a first processing device for forming the second holding surface on the raw material block by cutting the raw material block mounted on the chuck body; and a second processing device for forming the first holding surface having a higher hardness than the second holding surface on the raw material block by processing the raw material block mounted on the chuck body.

[0010] According to the present invention, a chuck soft jaw, a forming method of the chuck soft jaw, a workpiece processing method and a hybrid machine tool capable of shortening the processing time can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic cross-sectional view schematically showing a state in which the chuck jaws in the first embodiment are supported by the chuck body. Figure 2 This is a schematic cross-sectional view schematically showing a state in which the chuck jaws in the first embodiment are supported by the chuck body. Figure 3 This is a schematic cross-sectional view schematically showing a state in which the chuck jaws in the first embodiment are supported by the chuck body. Figure 4 It is a schematic cross-sectional view schematically showing the chuck soft jaws in the first embodiment. Figure 5 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a first modified example of the first embodiment. Figure 6 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a first modified example of the first embodiment. Figure 7 It is a schematic cross-sectional view schematically showing a chuck soft jaw in a first modified example of the first embodiment. Figure 8 It is a schematic perspective view schematically showing a chuck soft jaw in a first modified example of the first embodiment. Fig. 9 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a second modified example of the first embodiment. Fig.10 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a second modified example of the first embodiment. Fig.11 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a third modified example of the first embodiment. Fig.12 This is a schematic cross-sectional view schematically showing a state in which a chuck jaw is supported by a chuck body in a fourth modified example of the first embodiment. Fig.13 This is a schematic cross-sectional view schematically showing a state after the mounting process is performed. Fig.14 This is a schematic cross-sectional view schematically showing how a raw material block is cut by a cutting tool. Fig.15 This is a schematic cross-sectional view schematically showing a state where a first holding surface is formed on a raw material block. Fig.16 This is a schematic cross-sectional view schematically showing a state where a second holding surface is formed on a raw material block. Fig.17 This is a schematic cross-sectional view schematically showing a state in which a raw material block is cut by a cutting tool in a modified example of a method for forming a chuck soft jaw. Fig.18 This is a schematic cross-sectional view schematically showing a state in which a first holding surface is formed on a raw material block in a modified example of a method for forming a chuck soft jaw. Fig.19 This is a schematic cross-sectional view schematically showing a state where projections and depressions are formed on the first holding surface. Fig. 20This is a schematic cross-sectional view schematically showing a state in which a second holding surface is formed on a raw material block in a modified example of a method for forming a chuck soft jaw. Fig.21 This is a flowchart showing an example of a method for forming a chuck soft jaw in the first embodiment. Fig. 22 This is a diagram schematically showing a state after a workpiece is mounted on the chuck soft jaws. Fig.23 The figure schematically shows a state where a first portion of a workpiece is cut while the workpiece is held by a first holding surface of a chuck soft jaw. Fig.24 This is a diagram schematically showing a state where a workpiece is transferred from a first workpiece holding device to a second workpiece holding device. Fig.25 This is a diagram schematically showing a state where a workpiece is transferred from a first workpiece holding device to a second workpiece holding device. Fig.26 It is a diagram schematically showing a state in which an oxidized surface of a workpiece is cut while the workpiece is held by a second workpiece holding device. Fig. 27 This is a diagram schematically showing a state where a workpiece is transferred from a second workpiece holding device to a first workpiece holding device. Fig.28 The figure schematically shows a state where the second portion of the workpiece is machined while the workpiece is held by the second holding surface of the chuck soft jaws. Fig.29 This is a flowchart showing an example of the workpiece processing method in the first embodiment. Fig.30 It is a diagram schematically showing a state of machining a workpiece in a first modification of the workpiece machining method. Fig.31 This is a diagram schematically showing how a workpiece is ground by a grinding tool. Fig.32 It is a diagram schematically showing a state of machining a workpiece in a second modification of the workpiece machining method. Fig.33 It is a diagram schematically showing a state of machining a workpiece in a third modified example of the workpiece machining method. Fig.34 It is a diagram schematically showing a state of machining a workpiece in a fourth modified example of the workpiece machining method. Fig.35 This is a flowchart showing another example of the workpiece processing method in the first embodiment. Fig.36 It is a schematic perspective view schematically showing the hybrid machine tool in the first embodiment. Fig.37It is a schematic perspective view schematically showing the hybrid machine tool in the first embodiment. Fig.38 It is a schematic perspective view schematically showing a hybrid machine tool in a first modified example of the first embodiment. Fig.39 It is a schematic perspective view schematically showing a hybrid machine tool in a first modified example of the first embodiment. Fig.40 This is a diagram schematically showing a situation in which a control device can send control instructions to a plurality of controlled devices. Fig.41 This is a diagram schematically showing a situation in which a control device can send control instructions to a plurality of controlled devices. Fig.42 This is a diagram schematically showing a situation in which a control device can send control instructions to a plurality of controlled devices. DETAILED DESCRIPTION

[0012] Hereinafter, the chuck soft jaw 1, the forming method of the chuck soft jaw, the workpiece processing method and the hybrid machine tool 2 in the embodiment will be described with reference to the accompanying drawings. In addition, in the following description of the embodiment, the same reference numerals are marked on the parts and components having the same functions, and repeated descriptions of the parts and components marked with the same reference numerals are omitted.

[0013] (Definition of direction) In this specification, the direction away from the first axis AX as the central axis of the chuck body 31 of the first workpiece holding device 3 is defined as the “first direction DR1”. In addition, the direction close to the first axis AX as the central axis of the chuck body 31 of the first workpiece holding device 3 is defined as the “second direction DR2”.

[0014] In this specification, a direction along the central axis of the chuck body 31 of the first workpiece holding device 3 and from the chuck body 31 toward the chuck jaw 1 is defined as a “third direction DR3 .” Furthermore, a direction opposite to the third direction DR3 is defined as a “fourth direction DR4 .”

[0015] In the following description, the central axis of the chuck body 31 of the first workpiece holding device 3 is referred to as a “first axis AX.” In addition, the central axis of the second chuck body 41 of the second workpiece holding device 4 is referred to as a “second axis AT.”

[0016] (Chuck soft jaw 1) Reference Figures 1 to 12 The chuck soft jaw 1 in the first embodiment will be described. Figures 1 to 3 2 is a schematic cross-sectional view schematically showing a state in which the chuck jaw 1 in the first embodiment is supported by the chuck body 31. Figure 2The workpiece 9A is shown being held on the first holding surface 11 of the chuck soft jaw 1. Figure 3 The workpiece 9A is shown being held by the second holding surface 12 of the chuck jaw 1 . Figure 4 It is a schematic cross-sectional view schematically showing the chuck soft jaw 1 in the first embodiment. Figure 5 and Figure 6 1 is a schematic cross-sectional view schematically showing a state in which the chuck jaw 1 is supported by the chuck body 31 in the first modified example of the first embodiment. Figure 5 The workpiece 9B is shown being held on the first holding surface 11 of the chuck soft jaw 1. Figure 6 The workpiece 9B is shown being held by the second holding surface 12 of the chuck jaw 1 . Figure 7 This is a schematic cross-sectional view schematically showing a chuck soft jaw 1 in a first modified example of the first embodiment. Figure 8 It is a schematic perspective view schematically showing a chuck soft jaw 1 in a first modified example of the first embodiment. Fig. 9 and Fig.10 2 is a schematic cross-sectional view schematically showing a state in which the chuck jaw 1 is supported by the chuck body 31 in the second modified example of the first embodiment. Fig. 9 The workpiece 9C is shown being held on the first holding surface 11 of the chuck soft jaw 1. Fig.10 The workpiece 9C is shown being held by the second holding surface 12 of the chuck jaw 1 . Fig.11 This is a schematic cross-sectional view schematically showing a state in which the chuck jaw 1 is supported by the chuck body 31 in the third modified example of the first embodiment. Fig.12 This is a schematic cross-sectional view schematically showing a state in which the chuck jaw 1 is supported by the chuck body 31 in a fourth modified example of the first embodiment.

[0017] like Figure 1 As illustrated, the chuck jaw 1 in the first embodiment is a member supported by the chuck body 31. More specifically, the chuck jaw 1 is supported by the chuck body 31 so as to be movable in a first direction DR1 away from a first axis AX serving as a central axis of the chuck body 31 and in a second direction DR2 close to the first axis AX. Figure 1 In the example described, the first direction DR1 corresponds to a radial direction away from the central axis of the chuck body 31. In addition, the second direction DR2 is a direction opposite to the first direction DR1.

[0018] exist Figure 1 and Figure 2In the example described, the chuck body 31 has a movable portion 32 and a base portion 33 that movably supports the movable portion 32. In addition, the chuck soft jaw 1 can move together with the movable portion 32 of the chuck body 31 in a first direction DR1 away from the first axis AX that is the center axis of the chuck body 31. In addition, the chuck soft jaw 1 can move together with the movable portion 32 of the chuck body 31 in a second direction DR2 close to the first axis AX that is the center axis of the chuck body 31.

[0019] like Figure 2 As shown in the example, the chuck soft jaw 1 has a first holding surface 11 that can hold a first surface 91 of the workpiece 9A (eg, an oxidized surface 911 of the workpiece 9A). Figure 3 As shown in the example, the chuck jaw 1 has the second holding surface 12 capable of holding the machined surface 92 of the workpiece 9A. The hardness of the first holding surface 11 is higher than that of the second holding surface 12.

[0020] The material constituting the chuck soft jaw 1 may be steel or other materials. When the second holding surface 12 is formed of steel, the first holding surface 11 may also be formed of high-hardness steel (e.g., steel containing a martensite phase) having a higher hardness than the steel forming the second holding surface 12. Alternatively, the first holding surface 11 may also be formed of a metal material other than steel (e.g., titanium) having a higher hardness than the steel forming the second holding surface 12.

[0021] exist Figure 2 and Figure 3 In the recorded example, the chuck soft jaw 1 has a first holding surface 11 (more specifically, a first holding surface 11 with a relatively high hardness) and a second holding surface 12 (more specifically, a second holding surface 12 with a relatively low hardness), wherein the first holding surface 11 has a hardness suitable for holding a first surface 91 of a workpiece 9A, and the second holding surface 12 has a hardness suitable for holding a cut surface 92 of the workpiece 9A.

[0022] Therefore, when both the first surface 91 of the workpiece 9A is processed while being held by the chuck soft jaws 1 and the cut surface 92 of the workpiece 9A is processed while being held by the chuck soft jaws 1, it is not necessary to replace the jaws supported by the chuck body 31 (more specifically, it is not necessary to replace the jaws supported by the chuck body 31 from hard jaws to soft jaws). Therefore, when the chuck soft jaws 1 in the first embodiment are used, the processing time required for processing the workpiece 9A is shortened by saving the time for replacing the jaws.

[0023] (arbitrary additional structure) Next, refer to Figures 1 to 12 An optional additional structure that can be adopted in the soft chuck jaw 1 of the first embodiment will be described.

[0024] (First holding surface 11) exist Figure 2 In the example described, the first holding surface 11 is, for example, a surface that holds the oxidized surface 911 of the workpiece 9A. The oxidized surface 911 of the workpiece 9A has fine irregularities. In order to prevent sliding between the oxidized surface 911 having irregularities and the first holding surface 11, it is necessary for the first holding surface 11 to hold the oxidized surface 911 with a strong force. In the case where the first holding surface 11 is a surface having a relatively high hardness, it is possible to suppress the first holding surface 11 that contacts the oxidized surface 911 with a strong force from being damaged by the oxidized surface 911. Therefore, the durability of the chuck soft jaw 1 can be improved, and the life of the chuck soft jaw 1 can be extended.

[0025] like Figure 4 As shown in the example, the first holding surface 11 may also have a concave-convex surface 111. More specifically, the first holding surface 11 may also have a pointed protrusion or a groove 111v. In the case where the first holding surface 11 has the concave-convex surface 111, the gripping property of the oxidized surface 911 of the workpiece 9A can be improved. Alternatively, the first holding surface 11 may also be a smooth surface (in other words, a surface without concave-convex surfaces).

[0026] exist Figure 4 In the example described, the first holding surface 11 is a surface formed by heat treatment. More specifically, the first holding surface 11 is a surface 11a formed by quenching. For example, the quenching is performed by irradiating a laser onto the surface of the material constituting the chuck jaw 1. The material constituting the chuck jaw 1 is, for example, steel.

[0027] Alternatively, if Figure 1 As shown in the example, the first holding surface 11 may be a metal laminate surface 11 b formed by laminating a metal material N having a higher hardness than the material constituting the raw material block on the surface of the raw material block constituting the soft chuck jaw 1 .

[0028] (Second holding surface 12) exist Figure 3 In the example described, the second holding surface 12 is a surface that holds the cut surface 92 of the workpiece 9A. The cut surface 92 of the workpiece 9A is the same as the oxidized surface 911 (see Figure 2 ) is a relatively smooth surface compared to the second holding surface 12. When the second holding surface 12 is a surface having a relatively low hardness, it is possible to prevent the cut surface 92 of the workpiece 9A from being damaged by the second holding surface 12.

[0029] exist Figure 4In the example described, the second holding surface 12 is a machined surface 122 formed by cutting. When the second holding surface 12 is formed by cutting, the second holding surface 12 can be set to a smooth surface. In this case, it is possible to more effectively prevent the machined surface 92 of the workpiece 9A held by the second holding surface 12 from being damaged by the second holding surface 12. Figure 4 In the described example, the second holding surface 12 is a smooth surface (in other words, a surface without grooves, protrusions, etc.).

[0030] exist Figure 4 In the example described, the first holding surface 11 and the second holding surface 12 are arranged on one block member 10 formed integrally. Figure 4 In the described example, it is not necessary to connect the member on which the first holding surface 11 is arranged and the member on which the second holding surface 12 is arranged by a fixing member such as a bolt.

[0031] (Base 14 of the chuck soft jaw 1) exist Figure 4 In the example described, the chuck jaw 1 has a base 14 mounted on the chuck body 31. The base 14 may also have a first concave-convex portion 142 that engages with a second concave-convex portion 312 formed on the chuck body 31. Figure 3 In the example described, the mounting position of the chuck jaw 1 relative to the movable portion 32 of the chuck body 31 can be adjusted by adjusting the relative position of the first concave-convex portion 142 relative to the second concave-convex portion 312. The chuck jaw 1 is mounted on the chuck body 31 by a fixing member such as a bolt. Figure 4 In the described example, the chuck jaw 1 is provided with a through hole 15 capable of receiving a fixing member such as a bolt.

[0032] (Arrangement Relationship Among the First Holding Surface 11, the Second Holding Surface 12, and the Base 14) exist Figure 3 In the described example, the second holding surface 12 is arranged between the first holding surface 11 and the base 14 in the direction along the first axis AX.

[0033] exist Figure 3 In the example described, the first holding surface 11 and the second holding surface 12 are substantially parallel to the first axis AX. The first holding surface 11 may also be an arcuate surface with the first axis AX as the center line. In addition, the second holding surface 12 may also be an arcuate surface with the first axis AX as the center line.

[0034] exist Figure 3 In the example described, the chuck soft jaw 1 has a first step surface 16. The first step surface 16 is substantially perpendicular to the first axis AX, for example. Figure 3In the example described, the first step surface 16 is arranged between the first holding surface 11 and the second holding surface 12 in the direction along the first axis AX. The inner edge of the first step surface 16 may also be connected to the first holding surface 11. In addition, the outer edge of the first step surface 16 may also be connected to the second holding surface 12.

[0035] exist Figure 3 In the example described, the chuck soft jaw 1 has a second step surface 17. The second step surface 17 is substantially perpendicular to the first axis AX, for example. Figure 3 In the described example, the second stepped surface 17 is arranged on the base portion 14 side with respect to the second holding surface 12 in the direction along the first axis AX.

[0036] When the workpiece 9A is held by the second holding surface 12, the second stepped surface 17 can also function as a positioning surface for positioning the base end surface (in other words, the end surface on the fourth direction DR4 side) of the workpiece 9A. Figure 2 As illustrated, when the workpiece 9A is held by the first holding surface 11 , the first stepped surface 16 may also function as a positioning surface for positioning the base end surface of the workpiece 9A.

[0037] exist Figure 2 In the example described, the first holding surface 11 is a surface that holds the inner surface 91n of the workpiece 9A (more specifically, the inner peripheral surface of the workpiece 9A). Figure 3 In the described example, the second holding surface 12 is a surface that holds the surface 91 m formed by cutting the inner surface 91 n of the workpiece 9A (more specifically, a surface formed by cutting the inner peripheral surface of the workpiece 9A).

[0038] exist Figure 3 In the described example, the distance L2 between the first axis AX and the second holding surface 12 is greater than the distance L1 between the first axis AX and the first holding surface 11 .

[0039] (First Modification of the Soft Chuck Jaws) The configuration of the first holding surface 11 and the second holding surface 12 in the chuck soft jaw 1 is not limited to Figures 2 to 4 Examples of records. Figures 5 to 8 A first modified example of the chuck soft jaw 1 will be described.

[0040] exist Figure 5 In the example described, the second holding surface 12 is arranged between the first holding surface 11 and the base 14 in the direction along the first axis AX. Figure 5 In the described example, the first holding surface 11 and the second holding surface 12 are respectively substantially parallel to the first axis AX.

[0041] exist Figure 5In the example described, the chuck soft jaw 1 has a first step surface 16. The first step surface 16 is substantially perpendicular to the first axis AX, for example. Figure 5 In the example described, the first step surface 16 is arranged between the first holding surface 11 and the second holding surface 12 in the direction along the first axis AX. The outer edge of the first step surface 16 may also be connected to the first holding surface 11. In addition, the inner edge of the first step surface 16 may also be connected to the second holding surface 12.

[0042] exist Figure 5 In the example described, the chuck soft jaw 1 has a second step surface 17. The second step surface 17 is substantially perpendicular to the first axis AX, for example. Figure 5 In the described example, the second stepped surface 17 is arranged on the base portion 14 side with respect to the second holding surface 12 in the direction along the first axis AX.

[0043] like Figure 5 As illustrated, when the workpiece 9B is held by the first holding surface 11, the first stepped surface 16 can also function as a positioning surface for positioning the base end surface (in other words, the end surface on the fourth direction DR4 side) of the workpiece 9B. Figure 6 As illustrated, when the workpiece 9B is held by the second holding surface 12 , the second stepped surface 17 may also function as a positioning surface for positioning the base end surface of the workpiece 9B.

[0044] exist Figure 5 In the example described, the first holding surface 11 is a surface that holds the outer surface 91u of the workpiece 9B (more specifically, the outer peripheral surface of the workpiece 9B). Figure 6 In the described example, the second holding surface 12 is a surface that holds the surface 91 v formed by cutting the outer surface 91 u of the workpiece 9B (more specifically, a surface formed by cutting the outer peripheral surface of the workpiece 9B).

[0045] exist Figure 6 In the described example, the distance L4 between the first axis AX and the second holding surface 12 is smaller than the distance L3 between the first axis AX and the first holding surface 11 .

[0046] like Figure 8 As shown in the example, the first holding surface 11 may also be a first arc-shaped surface 115. The center line of the first arc-shaped surface 115 is preferably coaxial with the first axis AX. Figure 8 As illustrated, the second holding surface 12 may be a second arcuate surface 125. The center line of the second arcuate surface 125 is preferably coaxial with the first axis AX.

[0047] (Second modification of the chuck soft jaws, third modification of the chuck soft jaws) Reference Fig. 9 and Fig.10 The second modification of the chuck soft jaw 1 is described, referring to Fig.11 A third modified example of the chuck soft jaw 1 will be described.

[0048] exist Fig. 9 In the example described, the second holding surface 12 is arranged to be opposite to the first holding surface 11. Fig. 9 In the described example, the first holding surface 11 and the second holding surface 12 are respectively substantially parallel to the first axis AX.

[0049] exist Fig. 9 In the example described, the chuck soft jaw 1 has a connecting surface 18 connecting the first holding surface 11 and the second holding surface 12. The connecting surface 18 is substantially perpendicular to the first axis AX. The outer edge of the connecting surface 18 may also be connected to the first holding surface 11. In addition, the inner edge of the connecting surface 18 may also be connected to the second holding surface 12. Alternatively, as Fig.11 As illustrated, the inner edge of the connecting surface 18 may be connected to the first holding surface 11 , and the outer edge of the connecting surface 18 may be connected to the second holding surface 12 .

[0050] like Fig. 9 As illustrated, when the workpiece 9C is held by the first holding surface 11, the connecting surface 18 can also function as a positioning surface for positioning the base end surface (in other words, the end surface on the fourth direction DR4 side) of the workpiece 9C. Fig.10 As illustrated, when the workpiece 9C is held by the second holding surface 12 , the connecting surface 18 may also function as a positioning surface for positioning the base end surface of the workpiece 9C.

[0051] exist Fig. 9 In the example described, the first holding surface 11 is a surface that holds the outer surface 91u of the workpiece 9C (more specifically, the outer peripheral surface of the workpiece 9C). Fig.10 In the described example, the second holding surface 12 is a surface that holds the surface 91 m formed by cutting the inner surface 91 n of the workpiece 9C (more specifically, a surface formed by cutting the inner peripheral surface of the workpiece 9C).

[0052] Alternatively, if Fig.11 As illustrated, the first holding surface 11 may be a surface that holds the inner surface 91n of the workpiece 9D (more specifically, the inner peripheral surface of the workpiece 9D). In addition, the second holding surface 12 may be a surface that holds the surface formed by cutting the outer surface 91u of the workpiece 9D (more specifically, the surface formed by cutting the outer peripheral surface of the workpiece 9D).

[0053] (Fourth Modification of the Chuck Soft Jaw) Reference Fig.12 A fourth modification of the chuck soft jaw 1 is described. Figures 1 to 11 In the example described, the number of the first holding surface 11 of the chuck soft jaw 1 is one, and the number of the second holding surface 12 of the chuck soft jaw 1 is one. Alternatively, Fig.12 As shown in the example, the chuck soft jaw 1 can also have a plurality of first holding surfaces 11. Fig.12 As shown in the example, the chuck soft jaw 1 may also have a plurality of second holding surfaces 12. The hardness of each of the plurality of first holding surfaces 11 is higher than the hardness of each of the plurality of second holding surfaces 12. Fig.12 In the described example, the first holding surfaces 11 and the second holding surfaces 12 are alternately arranged in the direction along the first axis AX.

[0054] (Forming method of chuck soft jaws) Reference Figures 1 to 21 A method for forming the soft chuck jaws in the first embodiment will be described. Fig.13 This is a schematic cross-sectional view schematically showing a state after the mounting process is performed. Fig.14 It is a schematic cross-sectional view schematically showing a state where the raw material block BL is cut by the cutting tool T1. Fig.15 It is a schematic cross-sectional view schematically showing a state where the first holding surface 11 is formed on the raw material block BL. Fig.16 It is a schematic cross-sectional view schematically showing a state where the second holding surface 12 is formed on the raw material block BL. Fig.17 This is a schematic cross-sectional view schematically showing a state in which a raw material block BL is cut by a cutting tool T1 in a modified example of the method for forming a chuck soft jaw. Fig.18 This is a schematic cross-sectional view schematically showing a state in which a first holding surface 11 is formed on a blank block BL in a modified example of a method for forming a chuck jaw. Fig.19 This is a schematic cross-sectional view schematically showing a state where the concavities and convexities 111 are formed on the first holding surface 11 . Fig. 20 This is a schematic cross-sectional view schematically showing a state in which the second holding surface 12 is formed on the blank block BL in a modified example of the method for forming the chuck jaws. Fig.21 This is a flowchart showing an example of a method for forming a chuck soft jaw in the first embodiment.

[0055] The soft jaws formed by the forming method of the chuck soft jaws in the first embodiment may be Figure 4 The chuck soft jaw 1 shown in the example may be Figure 7 The chuck soft jaw 1 shown in the example may be Figures 10 to 12 Any of the chuck soft jaws 1 illustrated may be other chuck soft jaws.

[0056] like Fig.13As illustrated, in the first step ST1 , the raw material block BL for forming the chuck jaw 1 is attached to the chuck body 31 (more specifically, the movable portion 32 of the chuck body 31 ). The first step is an attaching step.

[0057] The shape of the raw material block BL is preferably similar to the shape of the formed chuck soft jaw 1. The material constituting the raw material block BL may be steel or other materials. Fig.13 In the described example, the raw material block BL is composed of one block member 10 formed integrally.

[0058] exist Fig.13 In the example described, the raw material block BL includes a base 14 mounted on the chuck body 31, a middle portion 10a supported by the base 14 and used to form the second holding surface 12, and a front end portion 10b supported by the middle portion 10a and used to form the first holding surface 11. The middle portion 10a is arranged on the third direction DR3 side relative to the base 14, and the front end portion 10b is arranged on the third direction DR3 side relative to the middle portion 10a.

[0059] The mounting step may include mounting the blank block BL to the movable portion 32 of the chuck body 31 by a fixing member such as a bolt BT. In addition, the mounting step may include engaging the first concavoconvex portion 142 of the blank block BL with the second concavoconvex portion 312 of the chuck body 31 .

[0060] like Figures 14 to 16 As shown in the example, in the second step ST2, the chuck soft jaw 1 is formed from the raw material block BL. The second step ST2 is a forming process. Figures 14 to 16 In the described example, the forming step is performed in a state where the blank block BL is attached to the chuck body 31. The forming step includes a plurality of sub-steps.

[0061] like Fig.14 As illustrated, in sub-step ST2-1, the raw material block BL mounted on the chuck body 31 is cut by the cutting tool T1. Sub-step ST2-1 includes cutting the raw material block BL to form a cutting surface BL1 corresponding to the shape and size of the workpiece 9 before processing. Sub-step ST2-1 can also be performed in a state where the chuck body 31 with the raw material block BL mounted thereon is rotated around the first axis AX.

[0062] Sub-step ST2-1 includes forming a cutting surface BL1 in the raw material block BL by cutting the raw material block BL using the cutting tool T1. Fig.15 As illustrated, the cutting surface BL1 may have irregularities (more specifically, grooves V). Alternatively, the cutting surface BL1 may be a smooth surface without irregularities.

[0063] exist Fig.15 In the example described, in sub-step ST2-2, the first holding surface 11 is formed on the raw material block BL mounted on the chuck body 31 by the second processing device 60 such as the laser irradiation device 61. Sub-step ST2-2 includes forming the first holding surface 11 having a higher hardness than the original surface of the raw material block BL in the raw material block BL by processing the cut surface BL1 of the raw material block BL. In addition, sub-step ST2-2 includes forming the first holding surface 11 corresponding to the shape and size of the workpiece 9 before processing. The first holding surface 11 is an oxidized surface 911 (if necessary, refer to Figure 5 ) face.

[0064] exist Fig.15 In the example described, in sub-step ST2-2, the first holding surface 11 is formed on the raw material block BL mounted on the chuck body 31 using the laser irradiation device 61. More specifically, sub-step ST2-2 includes irradiating the laser LB to the cutting surface BL1 of the raw material block BL by the laser irradiation device 61. The cutting surface BL1 is subjected to a heating treatment (more specifically, a quenching treatment) by the laser LB. As a result, the hardness of the cutting surface BL1 increases, and the cutting surface BL1 becomes the first holding surface 11 with a relatively high hardness.

[0065] In addition, when the cut surface BL1 has irregularities, the first holding surface 11 also has irregularities.

[0066] In sub-step ST2-3, it is determined whether the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. This determination can be performed by visual inspection or by using any inspection device.

[0067] exist Fig.21 In the example described, if it is determined that the forming accuracy of the first holding surface 11 does not satisfy the allowable accuracy (sub-step ST2-3: No), then in sub-step ST2-4, the first holding surface 11 is formed so that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. More specifically, the first holding surface 11 is processed by the cutting tool T1 or the grinding tool so that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. If it is determined that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy (sub-step ST2-3: Yes), proceed to sub-step ST2-5. In addition, sub-steps ST2-3 and ST2-4 may be omitted.

[0068] like Fig.16As illustrated, in sub-step ST2-5, the raw material block BL mounted on the chuck body 31 is cut by the cutting tool T1. Sub-step ST2-5 includes cutting the raw material block BL to form a second holding surface 12 corresponding to the shape and size of the workpiece 9 after rough machining (more specifically, to form a second holding surface 12 corresponding to the shape and size of the workpiece 9 after the oxidized surface 911 is removed).

[0069] Sub-step ST2-5 includes forming a second holding surface 12 in the raw material block BL by cutting the raw material block BL. Fig.16 In the described example, the second holding surface 12 is a smooth surface (in other words, a surface without grooves, protrusions, etc.) Sub-step ST2-5 may be performed while the chuck body 31 with the raw material block BL mounted thereon is rotated about the first axis AX.

[0070] In addition, sub-step ST2-5 can be performed before sub-step ST2-1, can be performed after sub-step ST2-1, and can be performed in parallel with sub-step ST2-1. However, if it is considered that the raw material block BL is thermally deformed due to the execution of step ST2-2, it is preferred to perform sub-step ST2-5 after sub-step ST2-1 and sub-step ST2-2.

[0071] (Modification of the method for forming the chuck soft jaws) Reference Fig.13 , Figures 17 to 20 A modified example of the method for forming the soft jaws of the chuck is described. Fig.13 As illustrated, in the first step ST1 , the raw material block BL is mounted on the chuck body 31 (more specifically, the movable portion 32 of the chuck body 31 ). The first step ST1 is a mounting process. The mounting process has been described above, so repeated description of the mounting process is omitted.

[0072] like Figures 17 to 20 As shown in the example, in the second step ST2, the chuck soft jaw 1 is formed from the raw material block BL. The second step ST2 is a forming process. Figures 17 to 20 In the described example, the forming step is performed in a state where the blank block BL is attached to the chuck body 31. The forming step includes a plurality of sub-steps.

[0073] like Fig.17 As illustrated, in sub-step ST2-1, the raw material block BL mounted on the chuck body 31 is cut by the cutting tool T1. Sub-step ST2-1 includes cutting the raw material block BL to form a cutting surface BL1 that substantially corresponds to the shape and size of the workpiece 9 before processing. Sub-step ST2-1 may also be performed in a state where the chuck body 31 mounted with the raw material block BL is rotated around the first axis AX.

[0074] Sub-step ST2-1 includes forming a cutting surface BL1 on the raw material block BL by cutting the raw material block BL with the cutting tool T1. The cutting surface BL1 may also be a smooth surface without irregularities. Alternatively, the cutting surface BL1 may also have irregularities (more specifically, grooves).

[0075] exist Fig.18 In the example described, in sub-step ST2-2, the first holding surface 11 is formed on the raw material block BL mounted on the chuck body 31 by the second processing device 60 such as the additive processing device 66. Sub-step ST2-2 includes forming the first holding surface 11 having a higher hardness than the original surface of the raw material block BL in the raw material block BL by processing the cutting surface BL1 of the raw material block BL. In addition, sub-step ST2-2 includes forming the first holding surface 11 corresponding to the shape and size of the workpiece 9 before processing. The first holding surface 11 is an oxidized surface 911 capable of holding the workpiece 9 (if necessary, refer to Figure 5 ) face.

[0076] exist Fig.18 In the example described, in sub-step ST2-2, the first holding surface 11 is formed on the raw material block BL mounted on the chuck body 31 using the additive processing device 66. More specifically, sub-step ST2-2 includes the additive processing device 66 adding a metal material N having a harder hardness than the raw material block BL to the cutting surface BL1 of the raw material block BL. Fig.18 In the example described, the additive processing device 66 supplies metal powder P to the cutting surface BL1 and irradiates the cutting surface BL1 with laser light LB. As a result, the metal powder P heated by the energy of the laser light LB melts, and the molten metal adheres to the cutting surface BL1. In this way, the first holding surface 11 with high hardness is formed in such a way that the metal material N with high hardness adheres to the cutting surface BL1 and covers the cutting surface BL1.

[0077] After performing sub-step ST2-2, the first holding surface 11 may also be formed with protrusions and depressions 111 (more specifically, grooves 111v). Fig.19 In the described example, the first holding surface 11 is cut by the cutting tool T1 , so that the projections and recesses 111 (more specifically, the grooves 111 v ) are formed on the first holding surface 11 .

[0078] In sub-step ST2-3, it is determined whether the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. This determination can be performed by visual inspection or by using any inspection device.

[0079] exist Fig.21In the example described, if it is determined that the forming accuracy of the first holding surface 11 does not satisfy the allowable accuracy (sub-step ST2-3: No), then in sub-step ST2-4, the first holding surface 11 is formed so that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. More specifically, the first holding surface 11 is processed by the cutting tool T1 or the grinding tool so that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy. If it is determined that the forming accuracy of the first holding surface 11 satisfies the allowable accuracy (sub-step ST2-3: Yes), proceed to sub-step ST2-5. In addition, sub-steps ST2-3 and ST2-4 may be omitted.

[0080] like Fig. 20 As illustrated, in sub-step ST2-5, the raw material block BL mounted on the chuck body 31 is cut by the cutting tool T1. Sub-step ST2-5 includes cutting the raw material block BL to form a second holding surface 12 corresponding to the shape and size of the workpiece 9 after rough machining (more specifically, to form a second holding surface 12 corresponding to the shape and size of the workpiece 9 after the oxidized surface 911 is removed).

[0081] Sub-step ST2-5 includes forming a second holding surface 12 in the raw material block BL by cutting the raw material block BL. Fig. 20 In the described example, the second holding surface 12 is a smooth surface (in other words, a surface without grooves, protrusions, etc.) Sub-step ST2-5 may be performed while the chuck body 31 with the raw material block BL mounted thereon is rotated about the first axis AX.

[0082] In addition, sub-step ST2-5 can be performed before sub-step ST2-1, can be performed after sub-step ST2-1, and can be performed in parallel with sub-step ST2-1. However, if it is considered that the raw material block BL is thermally deformed due to the execution of step ST2-2, it is preferred to perform sub-step ST2-5 after sub-step ST2-1 and sub-step ST2-2.

[0083] (Workpiece processing method) Reference Figures 1 to 35 The workpiece processing method in the first embodiment will be described. Fig. 22 This is a diagram schematically showing a state where a workpiece 9 is attached to the chuck jaw 1 . Fig.23 The figure schematically shows a state where the first portion 95 of the workpiece 9 is cut while the workpiece 9 is held by the first holding surface 11 of the chuck jaw 1 . Fig.24 and Fig.25 It is a diagram schematically showing a state where the workpiece 9 is transferred from the first workpiece holding device 3 to the second workpiece holding device 4 . Fig.261 is a diagram schematically showing a state in which an oxidized surface 911 of a workpiece 9 is cut while the workpiece 9 is held by the second workpiece holding device 4 . Fig. 27 This is a diagram schematically showing a state where the workpiece 9 is transferred from the second workpiece holding device 4 to the first workpiece holding device 3 . Fig.28 The figure schematically shows a state where the second portion 96 of the workpiece 9 is machined while the workpiece 9 is held by the second holding surface 12 of the chuck jaw 1 . Fig.29 This is a flowchart showing an example of the workpiece processing method in the first embodiment. Fig.30 1 is a diagram schematically showing a state in which a workpiece 9 is machined in a first modified example of the workpiece machining method. Fig.31 This is a diagram schematically showing a state where the workpiece 9 is ground by the grinding tool T2. Fig.32 It is a diagram schematically showing a state in which a workpiece 9 is machined in a second modification of the workpiece machining method. Fig.33 It is a diagram schematically showing a state of machining a workpiece 9 in a third modified example of the workpiece machining method. Fig.34 It is a diagram schematically showing a state of machining a workpiece 9 in a fourth modified example of the workpiece machining method. Fig.35 This is a flowchart showing another example of the workpiece processing method in the first embodiment.

[0084] like Fig. 22 As shown in the example, in the first step ST101, a chuck soft jaw 1 having a second holding surface 12 and a first holding surface 11 is prepared, and the first holding surface 11 has a higher hardness than the second holding surface 12. The first step ST1 is a preparation process. The chuck soft jaw 1 prepared in the preparation process can be a reference Figures 1 to 12 Any of the chuck jaws in the first embodiment described above may be other chuck jaws. In addition, the chuck jaw 1 prepared in the preparation step may be a chuck jaw formed by the chuck jaw forming method in the first embodiment, or may be other chuck jaws.

[0085] The chuck soft jaw 1 is supported by the chuck body 31 so as to be movable in a first direction DR1 away from the first axis AX of the first workpiece holding device 3 and in a second direction DR2 close to the first axis AX. Fig. 22 As illustrated, in the second step ST102, the workpiece 9 is mounted on the chuck jaw 1 supported by the chuck body 31. The second step ST102 is a workpiece mounting step.

[0086] like Fig.23 As shown in the example, in the third step ST103, the first portion 95 of the workpiece 9 is cut. The third step ST103 is a first cutting step. Fig.23In the described example, the first portion 95 of the workpiece 9 is cut while the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911 a of the workpiece 9 on the fourth direction DR4 side) is held by the first holding surface 11 of the chuck jaw 1 .

[0087] The first cutting step (third step ST103 ) includes bringing the cutting tool T1 into contact with the first portion 95 of the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 is rotated about the first axis AX.

[0088] exist Fig.23 In the described example, the first portion 95 cut in the first cutting step (third step ST103) includes the oxidized surface 911b of the workpiece 9 located on the third direction DR3 side relative to the first holding surface 11. Therefore, by performing the first cutting step, the oxidized surface 911b on the third direction DR3 side of the workpiece 9 becomes the cut surface 92 (more specifically, the first cut surface 92b on the third direction DR3 side).

[0089] Since there are asperities on the oxidized surface 911, slippage is likely to occur between the oxidized surface 911 and the first holding surface 11. Therefore, when executing the third step ST103, it is necessary to apply a relatively large gripping force to the workpiece 9 from the first holding surface 11. Since the first holding surface 11 is a surface with a relatively high hardness, the first holding surface 11 is suitable for applying a relatively large gripping force. In addition, since the first holding surface 11 is a surface with a relatively high hardness, it is difficult for the first holding surface 11 to be damaged by the contact between the first holding surface 11 and the oxidized surface 911. The first holding surface 11 may also have asperities 111 such as grooves (if necessary, refer to Figure 4 , Figure 7 , Fig.16 , Fig. 20 ). When the first holding surface 11 has the concavo-convex 111 , the gripping property of the oxidized surface 911 of the workpiece 9 can be improved.

[0090] like Fig.24 and Fig.25 As illustrated, in the fourth step ST104, the workpiece 9 is transferred from the first workpiece holding device 3 to the second workpiece holding device 4. The fourth step ST104 is a first transfer process. The first transfer process may also be automatically performed using the first workpiece holding device 3 and the second workpiece holding device 4. Alternatively, a part of the first transfer process may be performed using a transfer device other than the first workpiece holding device 3 and the second workpiece holding device 4 (more specifically, the transfer device is a gantry loader, a workpiece changing hand installed on the first head 52 described later, etc.), or may be performed manually.

[0091] like Fig.24As illustrated, the first transfer process (fourth step ST104) includes moving the chuck soft jaw 1 in a direction away from the oxidized surface 911a of the workpiece 9. By this movement, the first holding surface 11 of the chuck soft jaw 1 releases the holding of the workpiece 9. In addition, the first transfer process (fourth step ST104) includes moving the jaw 42 of the second workpiece holding device 4 in a direction close to the surface of the workpiece 9 (more specifically, the first cut surface 92b). By this movement, the surface of the workpiece 9 (more specifically, the first cut surface 92b) is held by the jaw 42.

[0092] like Fig.26 As illustrated, in the fifth step ST105, the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911a on the fourth direction DR4 side) is cut. The fifth step ST105 is a second cutting process. The second cutting process includes cutting the oxidized surface 911 of the workpiece 9 held by the second workpiece holding device 4 to form a cut surface 92 on the workpiece 9. More specifically, by cutting the oxidized surface 911a on the fourth direction DR4 side of the workpiece 9, a second cut surface 92a on the fourth direction DR4 side is formed.

[0093] exist Fig.26 In the example described, during the second cutting step, the first cut surface 92b of the workpiece 9 in the third direction DR3 is held by the claws 42 of the second workpiece holding device 4. To prevent the first cut surface 92b from being damaged by the claws 42, the claws 42 are preferably soft claws 42a that are not hardened.

[0094] exist Fig.26 In the described example, the second cutting process (fifth step ST105) includes bringing the cutting tool T1 into contact with the workpiece 9 (more specifically, the oxidized surface 911a on the fourth direction DR4 side of the workpiece 9) while the second chuck body 41 holding the workpiece 9 by the claws 42 is rotated around the center axis of the second chuck body 41 (hereinafter referred to as the "second axis AT").

[0095] The second cutting step (fifth step ST105 ) may include a rough machining step of removing the oxidized surface 911 a on the fourth direction DR4 side and a finishing step performed subsequent to the rough machining step.

[0096] like Fig. 27As illustrated, in the sixth step ST106, the workpiece 9 is transferred from the second workpiece holding device 4 to the first workpiece holding device 3. The sixth step ST106 is a second transfer process. The second transfer process may also be automatically performed using the first workpiece holding device 3 and the second workpiece holding device 4. Alternatively, a part of the second transfer process may be performed using a transfer device other than the first workpiece holding device 3 and the second workpiece holding device 4 (more specifically, the transfer device is a gantry loader, a workpiece changing hand installed on the first head 52 described later, etc.), or may be performed manually.

[0097] The second transfer process (sixth step ST106 ) includes moving the claws 42 in a direction away from the surface of the workpiece 9 . This movement releases the grip of the workpiece 9 by the claws 42 .

[0098] exist Fig. 27 In the example described, the second transfer process (sixth step ST106) includes transferring the workpiece 9 from the second workpiece holding device 4 to the first workpiece holding device 3 so that the second holding surface 12 of the chuck jaw 1 holds the cut surface 92 (more specifically, the second cut surface 92a). More specifically, Fig. 27 In the example described, the second transfer process (sixth step ST106) includes moving the second holding surface 12 of the chuck jaws 1 toward the second cut surface 92a of the workpiece 9. By this movement, the second holding surface 12 of the chuck jaws 1 holds the second cut surface 92a of the workpiece 9.

[0099] exist Fig.28 In the example described, the second portion 96 of the workpiece 9 is machined in the seventh step ST107. The seventh step ST107 is a workpiece machining process. The workpiece machining process (seventh step ST107) is performed in a state where the cut surface 92 (more specifically, the second cut surface 92a) formed by cutting the oxidized surface of the workpiece 9 (more specifically, the oxidized surface on the fourth direction DR4 side of the workpiece 9) is held on the second holding surface 12 of the chuck jaw 1.

[0100] Since the second holding surface 12 is a surface with relatively low hardness, it is possible to suppress the machined surface 92 of the workpiece 9 from being damaged by the second holding surface 12 .

[0101] exist Fig.28 In the example described, the workpiece machining step (seventh step ST107) includes cutting the second portion 96 of the workpiece 9. The first cutting step (third step ST103) is a rough machining step for removing the oxidized surface of the workpiece 9, and Fig.28 The cutting process in the described examples is a finishing process.

[0102] exist Fig.28In the described example, the workpiece machining step (seventh step ST107 ) includes bringing the cutting tool T1 into contact with the surface to be machined of the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 rotates about the first axis AX.

[0103] In the workpiece machining method of the first embodiment, machining is performed while the oxidized surface 911 of the workpiece 9 is held by the chuck soft jaws 1 (see Fig.23 ), and the machining of the workpiece 9 with the cutting surface 92 held by the chuck soft jaws 1 (see Fig.28 ) on both sides, there is no need to replace the jaws supported by the chuck body 31 (more specifically, there is no need to replace the jaws supported by the chuck body 31 from hard jaws to soft jaws). Therefore, in the workpiece processing method of the first embodiment, the processing time required for processing the workpiece 9 is shortened by saving the time for replacing the jaws.

[0104] In addition, in the workpiece processing method of the first embodiment, the oxidized surface 911 of the workpiece 9 is held by the first holding surface 11 having a relatively high hardness (see Fig.23 ). Therefore, it is possible to prevent the first holding surface 11 that contacts the oxidized surface 911 with a strong force from being damaged by the oxidized surface 911. In this way, the durability of the chuck soft jaw 1 can be improved and the life of the chuck soft jaw 1 can be extended.

[0105] Furthermore, in the workpiece machining method of the first embodiment, the cut surface 92 of the workpiece 9 is held by the second holding surface 12 having a relatively low hardness (see Fig.28 ). Therefore, it is possible to prevent the cut surface 92 of the workpiece 9 from being damaged by the second holding surface 12.

[0106] After the machining of the workpiece 9 is completed, the workpiece 9 is removed from the chuck jaws 1. A second workpiece may be attached to the chuck jaws 1. The machining of the second workpiece is performed in the same steps as the machining of the workpiece 9.

[0107] After the processing of the workpiece 9 is completed, in the case where the chuck soft jaw 1 is damaged, at least a part of the above-mentioned chuck soft jaw forming method can be performed again. For example, the damaged chuck soft jaw 1 can be used as a raw material block, and at least one of the first holding surface 11 and the second holding surface 12 can be formed again on the raw material block. The re-forming of the first holding surface 11 can also include cutting the damaged first holding surface 11 and heat treating (more specifically, quenching) the surface formed by cutting. Alternatively, the re-forming of the first holding surface 11 can also include cutting the damaged first holding surface 11 and adding metal material to the surface formed by cutting. In addition, the re-forming of the second holding surface 12 can also include cutting the damaged second holding surface 12.

[0108] (First Modification of Workpiece Processing Method) Reference Fig.30 The first modification of the workpiece processing method is described. The first step ST101 to the fourth step ST104 and the sixth step ST106 in the first modification of the workpiece processing method are respectively the same as the first step ST101 to the fourth step ST104 and the sixth step ST106 described above. Therefore, in the first modification of the workpiece processing method, the repeated description of the first step ST101 to the fourth step ST104 and the sixth step ST106 is omitted.

[0109] like Fig.30 As illustrated in (a), in the fifth step ST105, the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911a on the fourth direction DR4 side) is cut. The fifth step ST105 is a second cutting process. The second cutting process includes cutting the oxidized surface 911 of the workpiece 9 held by the second workpiece holding device 4 to form a cut surface 92 on the workpiece 9. More specifically, by cutting the oxidized surface 911a on the fourth direction DR4 side of the workpiece 9, a second cut surface 92a on the fourth direction DR4 side is formed.

[0110] exist Fig.30 In the example described in (a), when the second cutting step is performed, the first cut surface 92b of the workpiece 9 on the third direction DR3 side is held by the claws 42 (more specifically, the soft claws 42a) of the second workpiece holding device 4. Fig.30 In the example described in (a), the second cutting step includes bringing the cutting tool T1 into contact with the workpiece 9 in a state where the second chuck body 41 holding the workpiece 9 by the claws 42 rotates around the second axis AT.

[0111] After the fifth step ST105 is performed and before the sixth step ST106 is performed, the workpiece 9 held by the second workpiece holding device 4 may be ground by the grinding tool T2 (grinding step). Fig.30 In the described example, the first processing device 50 performs both cutting of the oxidized surface 911 a of the workpiece 9 using the cutting tool T1 and grinding of the workpiece 9 (more specifically, the second machined surface 92 a of the workpiece 9 ) using the grinding tool T2 .

[0112] exist Fig.30 In the example described in (b), the grinding step includes bringing the grinding tool T2 into contact with the workpiece 9 while the second chuck body 41 is rotating around the second axis AT while holding the workpiece 9 by the claws 42 .

[0113] exist Fig.30In the example described in (d), in the seventh step ST107, the second portion 96 of the workpiece 9 is processed. The seventh step ST107 is a workpiece processing step. The workpiece processing step (seventh step ST107) is performed while the cut surface 92 (more specifically, the second cut surface 92a) formed by cutting and grinding the oxidized surface of the workpiece 9 (more specifically, the oxidized surface on the fourth direction DR4 side of the workpiece 9) is held on the second holding surface 12 of the chuck soft jaw 1. In addition, in this specification, the surface formed by grinding after cutting is regarded as one form of the cut surface 92.

[0114] exist Fig.30 In the example described in (d), the workpiece processing step (seventh step ST107 ) includes grinding the second portion 96 of the workpiece 9 .

[0115] exist Fig.30 In the example described in (d), the workpiece machining step (seventh step ST107 ) includes bringing the grinding tool T2 into contact with the second portion 96 of the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 rotates around the first axis AX.

[0116] The amount of cut-in during grinding is smaller than that during cutting (more specifically, turning). Therefore, during grinding, it is sufficient to hold the workpiece 9 with a relatively small gripping force by the second holding surface 12 having a relatively low hardness.

[0117] The grinding of the second portion 96 by the grinding tool T2 is preferably performed with high precision. Fig.31 As shown in the example, it is assumed that the center axis AW of the workpiece 9 is eccentric to the first axis AX (in other words, the rotation axis of the chuck body 31). In this case, when the workpiece 9 rotates around the first axis AX, the workpiece 9 vibrates in the vertical direction. Therefore, in order to perform grinding with high precision, it is preferable that the grinding tool T2 moves in the vertical direction based on the eccentricity between the first axis AX and the center axis AW of the workpiece 9 and the rotation phase of the chuck body 31. In addition, for example, the second cutting surface 92a (see Fig.30 (b) ), and the measurement results are analyzed by computer to obtain the center axis AW of the workpiece 9.

[0118] (Second Modification of Workpiece Processing Method) Reference Fig.32The second modification of the workpiece processing method is described. The first step ST101 to the fourth step ST104 and the sixth step ST106 in the second modification of the workpiece processing method are respectively the same as the first step ST101 to the fourth step ST104 and the sixth step ST106 described above. Therefore, in the second modification of the workpiece processing method, the repeated description of the first step ST101 to the fourth step ST104 and the sixth step ST106 is omitted.

[0119] like Fig.32 As illustrated in (a) of FIG. 1 , in the fifth step ST105, the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911a on the fourth direction DR4 side) is cut. The fifth step ST105 is a second cutting process. The second cutting process includes cutting the oxidized surface 911 of the workpiece 9 held by the second workpiece holding device 4 to form a cut surface 92 on the workpiece 9. More specifically, by cutting the oxidized surface 911a on the fourth direction DR4 side of the workpiece 9, a second cut surface 92a on the fourth direction DR4 side is formed.

[0120] exist Fig.32 In the example described in (a), when the second cutting step is performed, the first cut surface 92b of the workpiece 9 on the third direction DR3 side is held by the claws 42 (more specifically, the soft claws 42a) of the second workpiece holding device 4. Fig.32 In the example described in (a), the second cutting step includes bringing the cutting tool T1 into contact with the workpiece 9 in a state where the second chuck body 41 holding the workpiece 9 by the claws 42 rotates around the second axis AT.

[0121] The internal gear 96c may be formed on the workpiece 9 held by the second workpiece holding device 4 after the fourth step ST104 or the fifth step ST105 is performed and before the sixth step ST106 is performed. The internal gear 96c is formed using the gear cutting tool T3. Fig.32 In the described example, the first processing device 50 performs both cutting of the oxidized surface 911 a of the workpiece 9 using the cutting tool T1 and gear skiving of the workpiece 9 using the gear skiving cutter T3 .

[0122] exist Fig.32 In the example described in (b), the gear skiving step includes bringing the gear skiving cutter T3 rotating about the tool axis into contact with the workpiece 9 while the second chuck body 41 rotating about the second axis AT holds the workpiece 9 via the claws 42 .

[0123] exist Fig.32In the example described in (d), the second portion 96 of the workpiece 9 is machined in the seventh step ST107. The seventh step ST107 is a workpiece machining process. The workpiece machining process (seventh step ST107) is performed in a state where the cut surface 92 (more specifically, the second cut surface 92a) formed by cutting the oxidized surface of the workpiece 9 (more specifically, the oxidized surface on the fourth direction DR4 side of the workpiece 9) is held on the second holding surface 12 of the chuck jaw 1.

[0124] exist Fig.32 In the example described in (d), the workpiece processing step (seventh step ST107 ) includes removing the burr 96 b formed on the second portion 96 of the workpiece 9 (more specifically, the internal gear 96 c of the workpiece 9 ). The burr 96 b is removed using the deburring tool T4 .

[0125] exist Fig.32 In the example described in (d), the workpiece machining step (seventh step ST107 ) includes bringing the deburring tool T4 into contact with the burr 96 b of the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 rotates around the first axis AX.

[0126] exist Fig.32 In the example described in (d), during the deburring step, the machined surface 92 of the workpiece 9 is held by the second holding surface 12 having a relatively low hardness. Therefore, during the deburring step, it is possible to prevent the machined surface 92 from being damaged by the second holding surface 12.

[0127] (Third Modification of Workpiece Processing Method) Reference Fig.33 The third modified example of the workpiece processing method is described. The first step ST101 to the fourth step ST104 and the sixth step ST106 in the third modified example of the workpiece processing method are respectively the same as the first step ST101 to the fourth step ST104 and the sixth step ST106 described above. Therefore, in the third modified example of the workpiece processing method, the repeated description of the first step ST101 to the fourth step ST104 and the sixth step ST106 is omitted.

[0128] like Fig.33 As illustrated in (a), in the fifth step ST105, the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911a on the fourth direction DR4 side) is cut. The fifth step ST105 is a second cutting process. The second cutting process includes cutting the oxidized surface 911 of the workpiece 9 held by the second workpiece holding device 4 to form a cut surface 92 on the workpiece 9. More specifically, by cutting the oxidized surface 911a on the fourth direction DR4 side of the workpiece 9, a second cut surface 92a on the fourth direction DR4 side is formed.

[0129] exist Fig.33 In the example described in (a), when the second cutting step is performed, the first cut surface 92b of the workpiece 9 on the third direction DR3 side is held by the claws 42 (more specifically, the soft claws 42a) of the second workpiece holding device 4. Fig.33 In the example described in (a), the second cutting step includes bringing the cutting tool T1 into contact with the workpiece 9 in a state where the second chuck body 41 holding the workpiece 9 by the claws 42 rotates around the second axis AT.

[0130] It is also possible to form a gear 96d such as an internal gear or an external gear on the workpiece 9 held by the second workpiece holding device 4 after executing the fourth step ST104 or the fifth step ST105 and before executing the sixth step ST106. The gear 96d is formed using a gear cutting tool T5 (such as a gear cutting tool, a hob, etc.). More specifically, an internal gear can be formed using a gear cutting tool, and an external gear can be formed using a hob. Fig.33 In the described example, the first processing device 50 performs both cutting of the oxidized surface 911 a of the workpiece 9 using the cutting tool T1 and forming of the gear 96 d on the workpiece 9 using the gear cutting tool T5 .

[0131] exist Fig.33 In the example described in (b), the gear cutting step includes bringing the gear cutting tool T5 rotating about the tool axis into contact with the workpiece 9 while the second chuck body 41 rotating about the second axis AT holds the workpiece 9 by the claws 42 .

[0132] exist Fig.33 In the example described in (d), the second portion 96 of the workpiece 9 is machined in the seventh step ST107. The seventh step ST107 is a workpiece machining process. The workpiece machining process (seventh step ST107) is performed in a state where the cut surface 92 (more specifically, the second cut surface 92a) formed by cutting the oxidized surface of the workpiece 9 (more specifically, the oxidized surface on the fourth direction DR4 side of the workpiece 9) is held on the second holding surface 12 of the chuck jaw 1.

[0133] exist Fig.33 In the example described in (d), the workpiece processing step (seventh step ST107) includes forming a hole 96h, a recessed portion, etc. in the second portion 96 of the workpiece 9. For example, the hole 96h, the recessed portion, etc. are formed using a milling tool T6 (eg, a drill).

[0134] exist Fig.33 In the example described in (d), before executing the seventh step ST107, the gear 96d is formed on the workpiece 9 by the gear cutting tool T5. The seventh step ST107 may also include: detecting the phase of the gear 96d; and forming the hole 96h, recess, etc. at a desired position using the milling tool T6 based on the detected phase.

[0135] exist Fig.33 In the example described in (d), during the milling process, the second holding surface 12 having relatively low hardness holds the machined surface 92 of the workpiece 9. Therefore, during the milling process, it is possible to prevent the machined surface 92 from being damaged by the second holding surface 12.

[0136] (Fourth Modification of Workpiece Processing Method) exist Fig.24 , Fig.25 , Fig. 27 , Fig.30 (c) Fig.32 (c) and Fig.33 In the example described in (c), the workpiece processing method includes a step of transferring the workpiece 9 between the first workpiece holding device 3 and the second workpiece holding device 4. In contrast, in a fourth modification of the workpiece processing method, the step of transferring the workpiece 9 between the first workpiece holding device 3 and the second workpiece holding device 4 is omitted.

[0137] The first step ST101 and the second step ST102 in the fourth modification of the workpiece processing method are respectively the same as the first step ST101 and the second step ST102 described above. Therefore, in the fourth modification of the workpiece processing method, repeated description of the first step ST101 and the second step ST102 is omitted.

[0138] like Fig.34 As shown in (a), in the third step ST103, the first portion 95 of the workpiece 9 (more specifically, the oxidized surface 911b of the workpiece 9 on the third direction DR3 side) is cut. The first portion 95 of the workpiece 9 is cut to form a cut surface 92. The third step ST103 is a first cutting process.

[0139] exist Fig.34 In the example described in (a), in the first cutting step, the first portion 95 of the workpiece 9 is cut while the oxidized surface 911 of the workpiece 9 (more specifically, the oxidized surface 911 a of the workpiece 9 on the fourth direction DR4 side) is held by the first holding surface 11 of the chuck jaw 1 .

[0140] exist Fig.34 In the example described in (a), the first cutting step (third step ST103 ) includes bringing the cutting tool T1 into contact with the first portion 95 of the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 rotates around the first axis AX.

[0141] In addition, if Fig.34As illustrated in (a) of FIG. 1 , when the third step ST103 is executed, the end portion of the workpiece 9 on the third direction DR3 side may be pressed by the tail stock 48 .

[0142] like Fig.34 As illustrated in (b) of FIG. 1 , in the fourth step ST104 ′, the holding position of the chuck jaw 1 with respect to the workpiece 9 is changed. The fourth step ST104 ′ is a holding position changing step.

[0143] exist Fig.34 In the example described in (b), the holding position changing step (fourth step ST104') includes (1) moving the chuck jaws 1 in a direction away from the workpiece 9, (2) turning the workpiece 9 over, and (3) moving the second holding surface 12 of the chuck jaws 1 in a direction close to the cut surface 92 of the workpiece 9. By executing the holding position changing step, the cut surface 92 of the workpiece 9 is held by the second holding surface 12 of the chuck jaws 1.

[0144] exist Fig.34 In the example described in (c), the second portion 96 of the workpiece 9 is machined in the fifth step ST105'. The fifth step ST105' is a workpiece machining process. The workpiece machining process (fifth step ST105') is performed while the machined surface 92 formed by cutting the oxidized surface of the workpiece 9 is held on the second holding surface 12 of the chuck jaw 1.

[0145] Since the second holding surface 12 is a surface with relatively low hardness, it is possible to suppress the machined surface 92 of the workpiece 9 from being damaged by the second holding surface 12 .

[0146] exist Fig.34 In the example described in (c), the workpiece processing step (fifth step ST105 ′) includes cutting the second portion 96 of the workpiece 9 .

[0147] exist Fig.34 In the example described in (c), the workpiece machining step (fifth step ST105 ′) includes bringing the cutting tool T1 into contact with the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 is rotated around the first axis AX.

[0148] Alternatively or additionally, Fig.34 As shown in (d) of FIG. 1 , the workpiece processing step (fifth step ST105 ′) may also include forming a gear 96 d such as an internal gear or an external gear on the workpiece 9 held by the first workpiece holding device 3 . The gear 96 d is formed using a gear cutting tool T5 (such as a gear cutting tool, a hob, etc.). Fig.34In the example described in (d), the workpiece machining step (fifth step ST105 ′) includes bringing the gear cutting tool T5 rotating about the tool axis into contact with the workpiece 9 while the chuck body 31 holding the workpiece 9 by the chuck jaws 1 rotates about the first axis AX.

[0149] exist Fig.23 , Fig.34 In the example described in (a), in the third step ST103, the first portion 95 of the workpiece 9 is cut while the outer surface of the workpiece 9 is held by the first holding surface 11 of the chuck jaw 1. Alternatively, Figure 2 or Fig.11 In the case of the chuck soft jaw 1 shown, in the third step ST103 , the first portion 95 of the workpiece 9 is cut while the inner surface 91 n of the workpiece 9 is held by the first holding surface 11 of the chuck soft jaw 1 .

[0150] exist Fig.28 , Fig.30 (d) Fig.32 (d) Fig.33 (d) Fig.34 (c) and Fig.34 In the example described in (d), in the seventh step ST107 (or the fifth step ST105 ′), the second portion 96 of the workpiece 9 is machined while the outer surface of the workpiece 9 is held by the second holding surface 12 of the chuck soft jaw 1 . Figure 3 or Fig.10 In the case of the soft chuck jaws 1 shown, in the seventh step ST107 (or the fifth step ST105 ′), the second portion 96 of the workpiece 9 is machined while the inner surface of the workpiece 9 is held by the second holding surface 12 of the soft chuck jaws 1 .

[0151] (Hybrid Machine Tool 2) Reference Figures 1 to 42 The hybrid machine tool 2 in the first embodiment will be described. Fig.36 and Fig.37 It is a schematic perspective view schematically showing the hybrid machine tool 2 in the first embodiment. Fig.38 and Fig.39 It is a schematic perspective view schematically showing a hybrid machine tool 2 in a first modified example of the first embodiment. Figure 40 to Figure 42 This is a diagram schematically showing a situation in which the control device 7 can send control instructions to a plurality of controlled devices.

[0152] exist Fig.36 In the described example, the hybrid machine tool 2 in the first embodiment includes a plurality of machining devices 5 for forming chuck soft jaws, a first workpiece holding device 3 , and a control device 7 for controlling the plurality of machining devices 5 and the first workpiece holding device 3 .

[0153] The plurality of processing devices 5 are mounted on the chuck body 31 from the raw material block BL (see Fig.36 ) Forming chuck soft jaw 1 (refer to Fig.37 More specifically, the plurality of processing devices 5 are configured to process the raw material block BL (see Fig.13 ) The chuck soft jaw 1 is formed with a first holding surface 11 and a second holding surface 12 (refer to Fig.16 or Fig. 20 ), the first holding surface 11 holds the oxidized surface of the workpiece, and the second holding surface 12 holds the cut surface of the workpiece.

[0154] like Fig. 22 As shown in the example, the first workpiece holding device 3 holds the workpiece 9 by the chuck jaws 1. The first workpiece holding device 3 includes a chuck body 31 that supports the chuck jaws 1, a first drive device 34 that moves the chuck jaws 1, and a first rotation drive device 36.

[0155] The first driving device 34 moves the chuck soft jaw 1 in a first direction DR1 away from the first axis AX (more specifically, in a radial direction away from the first axis AX) or in a second direction DR2 close to the first axis AX.

[0156] The first rotation drive device 36 rotates the chuck body 31 around the first axis AX. The first rotation drive device 36 rotates the chuck body 31, the chuck jaws 1 supported by the chuck body 31, and the workpiece 9 held by the chuck jaws 1 integrally around the first axis AX.

[0157] exist Fig.36 In the described example, the plurality of processing devices 5 include a first processing device 50 and a second processing device 60 .

[0158] The first processing device 50 can hold the cutting tool T1 (refer to Fig.16 or Fig. 20 ).exist Fig.16 or Fig. 20 In the described example, the first processing device (more specifically, the cutting tool T1 held by the first processing device 50 ) forms the second holding surface 12 on the raw material block BL by cutting the raw material block BL attached to the chuck body 31 .

[0159] In addition, Fig.14 or Fig.17 In the described example, the first processing device (more specifically, the cutting tool T1 held by the first processing device 50 ) cuts the raw material block BL attached to the chuck body 31 to form a cut surface BL1 as a basis of the first holding surface 11 in the raw material block BL.

[0160] exist Fig.15or Fig.18 In the described example, the second processing device 60 processes the raw material block BL (more specifically, the above-mentioned cutting surface BL1 ) attached to the chuck body 31 , thereby forming the first holding surface 11 having a higher hardness than the second holding surface 12 on the raw material block BL.

[0161] like Fig.15 As illustrated, the second processing device 60 may form the first holding surface 11 having a higher hardness than the second holding surface 12 (in other words, the first holding surface 11 subjected to quenching treatment) by irradiating the raw material block BL (more specifically, the above-mentioned cutting surface BL1 ) with the laser LB.

[0162] Alternatively, if Fig.18 As illustrated, the second processing device 60 can also form a first holding surface 11 having a harder hardness than the second holding surface 12 by adding a metal material N having a harder hardness than the material constituting the raw material block BL to the raw material block BL (more specifically, the above-mentioned cutting surface BL1).

[0163] The hybrid machine tool 2 in the first embodiment has a first workpiece holding device 3 for holding a workpiece 9 by means of a chuck soft jaw 1, and a plurality of processing devices 5 for forming a first holding surface 11 and a second holding surface 12 on the chuck soft jaw 1. Therefore, the same hybrid machine tool 2 can be used to perform the forming of the chuck soft jaw 1 and the processing of the workpiece 9.

[0164] In addition, the hybrid machine tool 2 in the first embodiment forms a chuck soft jaw 1, and the chuck soft jaw 1 has: a first holding surface 11 (more specifically, a first holding surface 11 with relatively high hardness), having a hardness suitable for holding a first surface 91 (more specifically, an oxidized surface 911) of a workpiece 9; and a second holding surface 12 (more specifically, a second holding surface 12 with relatively low hardness), having a hardness suitable for holding a cutting surface 92 of the workpiece 9.

[0165] Therefore, when the hybrid machine tool 2 performs both processing of the first surface 91 of the workpiece 9 held by the chuck soft jaws 1 and processing of the cut surface 92 of the workpiece 9 held by the chuck soft jaws 1, it is not necessary to replace the jaws supported by the chuck body 31 (more specifically, it is not necessary to replace the jaws supported by the chuck body 31 from hard jaws to soft jaws). Therefore, when the hybrid machine tool 2 in the first embodiment is used to process the workpiece 9, the processing time required for processing the workpiece 9 is shortened by saving the time for replacing the jaws.

[0166] (arbitrary additional structure) Next, refer to Figures 1 to 42An optional additional configuration that can be adopted in the hybrid machine tool 2 of the first embodiment will be described.

[0167] (Multiple chuck soft jaws) exist Fig.37 In the example described, the chuck body 31 supports the chuck soft jaw 1, the second chuck soft jaw 1B, and the third chuck soft jaw 1C. In addition, the chuck body 31 may also support the fourth chuck soft jaw. The shape and structure of the second chuck soft jaw 1B are the same as those of the chuck soft jaw 1, and the shape and structure of the third chuck soft jaw 1C are the same as those of the chuck soft jaw 1. Therefore, repeated descriptions of the second chuck soft jaw 1B and the third chuck soft jaw 1C are omitted. In addition, in the above description of the chuck soft jaw 1 in the first embodiment, the above description of the forming method of the chuck soft jaw in the first embodiment, and the above description of the workpiece processing method in the first embodiment, by replacing "chuck soft jaw 1" with "second chuck soft jaw 1B", it becomes a description of the second chuck soft jaw 1B. Similarly, in the above description about the chuck soft jaw 1 in the first embodiment, the above description about the forming method of the chuck soft jaw in the first embodiment, and the above description about the workpiece processing method in the first embodiment, by replacing "chuck soft jaw 1" with "third chuck soft jaw 1C", it becomes a description about the third chuck soft jaw 1C.

[0168] By this replacement, it can be understood that the first holding surface 11 of the chuck soft jaw 1, the first holding surface 11 of the second chuck soft jaw 1B, and the first holding surface 11 of the third chuck soft jaw 1C cooperate to hold the first surface 91 (more specifically, the oxidized surface 911) of the workpiece 9. Furthermore, by this replacement, it can be understood that the second holding surface 12 of the chuck soft jaw 1, the second holding surface 12 of the second chuck soft jaw 1B, and the second holding surface 12 of the third chuck soft jaw 1C cooperate to hold the cut surface 92 of the workpiece 9. Furthermore, it can be understood that in each of the chuck soft jaw 1, the second chuck soft jaw 1B, and the third chuck soft jaw 1C, the hardness of the first holding surface 11 is higher than the hardness of the second holding surface 12.

[0169] (First workpiece holding device 3) exist Figure 2 , Figure 5 , Fig. 9 , Fig.11 and Fig.12 In the example described, the first workpiece holding device 3 includes a chuck body 31 and a first drive device 34. The chuck body 31 may also include a movable portion 32 to which the chuck jaws 1 are fixed, and a base portion 33 that movably supports the movable portion 32. In this case, the first drive device 34 can move the chuck jaws 1 and the movable portion 32 relative to the base portion 33 in the first direction DR1 or the second direction DR2.

[0170] The first driving device 34 preferably moves the chuck soft jaw 1 , the second chuck soft jaw 1B, and the third chuck soft jaw 1C simultaneously in a direction away from the first axis AX (or in a direction approaching the first axis AX).

[0171] like Fig.36 As illustrated, the hybrid machine tool 2 may include a first moving device 81 (more specifically, a Z-axis servo motor) that moves the first workpiece holding device 3 in a direction parallel to the first axis AX.

[0172] (Second workpiece holding device 4) exist Fig.36 In the described example, the hybrid machine tool 2 includes the second workpiece holding device 4 .

[0173] The second workpiece holding device 4 can receive the workpiece 9 from the first workpiece holding device 3. In addition, the second workpiece holding device 4 can deliver the workpiece 9 to the first workpiece holding device 3. In addition, receiving the workpiece from the first workpiece holding device 3 and delivering the workpiece to the first workpiece holding device 3 can be performed automatically by mechanical means or manually.

[0174] like Fig.26 As illustrated, the second workpiece holding device 4 includes a second chuck body 41, a second drive device 44, and a second rotation drive device 46. The second chuck body 41 supports jaws 42 (more specifically, soft jaws 42a) that can hold the workpiece 9.

[0175] The second driving device 44 can move the claw 42 (more specifically, the soft claw 42 a ) in a direction away from the second axis AT, and can move the claw 42 (more specifically, the soft claw 42 a ) in a direction approaching the second axis AT.

[0176] The second rotation drive device 46 rotates the second chuck body 41 around the central axis (in other words, the second axis AT) of the second chuck body 41. The second axis AT as the central axis of the second chuck body 41 is coaxial with the first axis AX as the central axis of the chuck body 31 or is parallel to the first axis AX.

[0177] like Fig.26 As illustrated, the hybrid machine tool 2 may include a second moving device 82 (more specifically, a Z-axis servo motor) that moves the second workpiece holding device 4 in a direction parallel to the central axis of the second chuck body 41 .

[0178] In the case where the hybrid machine tool 2 has the second workpiece holding device 4, the reference Figures 22 to 33 A method for processing a workpiece is described.

[0179] (First Processing Device 50) exist Fig.36 In the described example, the first processing device 50 includes a first head 52 that holds a tool T such as a cutting tool T1 , and a first head moving device 55 that moves the first head 52 .

[0180] The first head moving device 55 may be a device capable of moving the first head 52 three-dimensionally. Fig.36 In the recorded example, the first head moving device 55 has a first motor 55a (more specifically, an X-axis servo motor) that moves the first head 52 in a direction parallel to the vertical axis, a second motor 55b (more specifically, a Z-axis servo motor) that moves the first head 52 in a direction parallel to the first axis AX, and a third motor 55c (more specifically, a Y-axis servo motor) that moves the first head 52 in a direction perpendicular to both the vertical axis and the above-mentioned first axis AX.

[0181] The first processing device 50 may include a rotation drive device 57 that rotates the tool T around the tool axis.

[0182] (Second processing device 60) exist Fig.36 In the example described, the second processing device 60 includes a laser irradiation device 61 for heat-treating the raw material block BL. Fig.15 In the described example, the laser irradiation device 61 irradiates the raw material block BL (more specifically, the cut surface BL1 of the raw material block BL) with the laser LB, thereby forming the first holding surface 11 having a higher hardness than the original surface of the raw material block BL.

[0183] exist Fig.36 In the described example, the second processing device 60 includes a second head 62 that emits laser light and a second head moving device 64 that moves the second head 62 .

[0184] The second head moving device 64 may be a device capable of moving the second head 62 two-dimensionally or a device capable of moving the second head 62 three-dimensionally. Fig.36 In the example described, the second head moving device 64 includes a fourth motor 64a (more specifically, an X-axis servo motor) that moves the second head 62 in a direction parallel to the vertical axis, and a fifth motor 64b (more specifically, a Z-axis servo motor) that moves the second head 62 in a direction parallel to the first axis AX. The second head moving device 64 may also include a sixth motor 64c that tilts the second head 62 around an axis parallel to the horizontal plane.

[0185] exist Fig.15 In the described example, the laser irradiation device 61 is used for shaping the chuck soft jaw 1. In addition, the laser irradiation device 61 can also be used for processing the workpiece 9.

[0186] like Fig.38 As illustrated, the second processing device 60 may include an additive processing device 66 instead of the laser irradiation device 61 (or in addition to the laser irradiation device 61). The additive processing device 66 adds a metal material having a higher hardness than the raw material block BL to the raw material block BL.

[0187] exist Fig.18 In the example described above, the additive processing device 66 includes a laser head 67 for emitting laser light LB, and a nozzle 68 for ejecting metal powder P toward the laser light LB emitted from the laser head 67. Fig.18 In the example described, the additive processing device 66 supplies metal powder P toward the raw material block BL (more specifically, the cut surface BL1 of the raw material block BL), and irradiates the laser LB toward the raw material block BL (more specifically, the cut surface BL1 of the raw material block BL). As a result, the metal powder P heated by the energy of the laser LB melts, and the molten metal adheres to the raw material block BL (more specifically, the cut surface BL1 of the raw material block BL). In this way, the first holding surface 11 having a higher hardness than the second holding surface 12 is formed on the raw material block BL (more specifically, the cut surface BL1 of the raw material block BL).

[0188] exist Fig.38 In the described example, the additive processing apparatus 66 includes a third head moving device 69 that moves the laser head 67 and the nozzle 68 .

[0189] The third head moving device 69 may be a device capable of moving the laser head 67 and the nozzle 68 two-dimensionally or a device capable of moving the laser head 67 and the nozzle 68 three-dimensionally. Fig.38 In the example described, the third head moving device 69 includes a seventh motor 69a (more specifically, an X-axis servo motor) that moves the laser head 67 and the nozzle 68 in a direction parallel to the vertical axis, and an eighth motor 69b (more specifically, a Z-axis servo motor) that moves the laser head 67 and the nozzle 68 in a direction parallel to the first axis AX. The third head moving device 69 may also include a ninth motor 69c that tilts the laser head 67 and the nozzle 68 around an axis parallel to the horizontal plane.

[0190] (Base 80) exist Fig.36 In the described example, the hybrid machine tool 2 includes a base 80. The base 80 supports the first workpiece holding device 3, the first processing device 50, and the second processing device 60. Alternatively, the base 80 may also support the second workpiece holding device 4.

[0191] (Control device 7) exist Fig.36In the described example, the hybrid machine tool 2 includes a control device 7. The control device 7 may be composed of one computer or a plurality of computers.

[0192] like Fig.40 As shown in the example, the control device 7 includes a processor 71, a storage device 72 (more specifically, a memory), a communication circuit 73, and an input device 74 (for example, a display 742 with a touch panel). The processor 71, the storage device 72, the communication circuit 73, and the input device 74 are connected to each other via a bus 75. Data required for the forming of the chuck soft jaw 1 and the processing of the workpiece 9 (for example, shape data of the chuck soft jaw 1 or the workpiece 9, processing position data of the chuck soft jaw 1 or the workpiece 9, etc.) can be input to the control device 7 through the input device 74, and can also be input to the control device 7 from other computers through the communication circuit 73. In addition, the input device 74 is not limited to the display 742 with a touch panel. For example, the control device 7 may also include: an input device 74 such as a button, a switch, a joystick, a pointing device, a keyboard, and a display that displays data or other information input to the input device 74.

[0193] The processor 71 generates a control signal by executing the processing program 722 stored in the storage device 72 based on the data input to the control device 7. In addition, the communication circuit 73 sends the control signal to the control target device (for example, the first workpiece holding device 3, the second workpiece holding device 4, the plurality of processing devices 5, the first moving device 81 that moves the first workpiece holding device 3, and / or the second moving device 82 that moves the second workpiece holding device 4). In this way, the control device 7 can control the control target device by executing the processing program 722 through the processor 71.

[0194] The processing program 722 may also include a soft claw forming program 722a and a workpiece processing program 722b. More specifically, the storage device 72 may also store the soft claw forming program 722a executed by the control device 7 and the workpiece processing program 722b executed by the control device 7.

[0195] (First holding surface forming mode) exist Fig.40 or in Fig.41 In the example described, the control device 7 can execute the first holding surface forming mode by executing the soft claw forming program 722a. The first holding surface forming mode is a mode that includes forming the first holding surface 11 having a hardness higher than the hardness of the original surface of the raw material block BL on the raw material block BL mounted on the chuck body 31 using the second processing device 60. The first holding surface forming mode is described in more detail.

[0196] The control device 7 sends the first rotation instruction R1 generated by executing the soft claw forming program 722a to the first rotation drive device 36 of the first workpiece holding device 3. In addition, the control device 7 sends the first cutting instruction J1 generated by executing the soft claw forming program 722a to the first processing device 50. The first rotation drive device 36 receiving the first rotation instruction R1 rotates the chuck body 31 and the raw material block BL mounted on the chuck body 31 around the first axis AX. In addition, the first processing device 50 receiving the first cutting instruction J1 uses the cutting tool T1 to form a cutting surface BL1 on the raw material block BL rotating around the first axis AX. In addition, in the case where the first holding surface 11 is formed by processing the original surface of the raw material block BL itself, the process of forming the cutting surface BL1 can also be omitted.

[0197] The control device 7 sends the first holding surface forming instruction F1 generated by executing the soft claw forming program 722a to the second processing device 60. The second processing device 60 that receives the first holding surface forming instruction F1 processes the raw material block BL (more specifically, the cutting surface BL1) to form the first holding surface 11 having a higher hardness than the original surface of the raw material block BL.

[0198] like Fig.40 As illustrated, when the second processing device 60 includes the laser irradiation device 61, the laser irradiation device 61 receives the first holding surface forming instruction F1 and irradiates the raw material block BL (more specifically, the cutting surface BL1) with the laser beam LB (see Fig.15 The raw material block BL (more specifically, the cutting surface BL1 ) is subjected to a heating treatment (more specifically, a quenching treatment) by the laser LB, and as a result, the hardness of the cutting surface BL1 is increased, and a first holding surface 11 having a relatively high hardness is formed from the raw material block BL (more specifically, the cutting surface BL1 ).

[0199] like Fig.41 As illustrated, when the second processing device 60 includes the additive processing device 66, the additive processing device 66 receiving the first holding surface forming instruction F1 adds a metal material N having a higher hardness than the raw material block BL to the raw material block BL (more specifically, the cutting surface BL1) (see Fig.18 ).

[0200] When the second processing device 60 is used to form the first holding surface 11 on the blank block BL, the first rotation drive device 36 of the first workpiece holding device 3 may continuously or intermittently rotate the chuck body 31 and the blank block BL mounted on the chuck body 31 around the first axis AX.

[0201] (Second holding surface forming mode) exist Fig.42In the example described, the control device 7 can execute the second holding surface forming mode by executing the soft claw forming program 722a. The second holding surface forming mode is a mode in which the second holding surface 12 is formed on the raw material block BL mounted on the chuck body 31 using the first processing device 50. The second holding surface forming mode is described in more detail.

[0202] The control device 7 sends the second rotation instruction R2 generated by executing the soft claw forming program 722a to the first rotation drive device 36 of the first workpiece holding device 3. In addition, the control device 7 sends the second cutting instruction J2 generated by executing the soft claw forming program 722a to the first processing device 50. The first rotation drive device 36 receiving the second rotation instruction R2 rotates the chuck body 31 and the raw material block BL mounted on the chuck body 31 around the first axis AX. The first processing device 50 receiving the second cutting instruction J2 forms the second holding surface 12 on the raw material block BL rotating around the first axis AX using the cutting tool T1.

[0203] (First processing mode) exist Fig.23 In the example described, the control device 7 can execute the first machining mode by executing the workpiece machining program 722b. The first machining mode is a mode in which the workpiece 9 held by the first holding surface 11 of the chuck jaw 1 is machined using the first machining device 50. Fig.23 In the described example, the first machining mode is executed in a state where the oxidized surface 911 of the workpiece 9 is held by the first holding surface 11 of the chuck jaw 1. The first machining mode will be described in more detail.

[0204] exist Fig.23 In the example described, the control device 7 sends the first machining command C1 generated by executing the workpiece machining program 722b to the first machining device 50. The first machining device 50 receiving the first machining command C1 machines the workpiece 9 held by the first holding surface 11 of the chuck jaw 1.

[0205] More specifically, the control device 7 sends a rotation instruction (more specifically, a third rotation instruction R3) generated by executing the workpiece processing program 722b to the first rotation drive device 36 of the first workpiece holding device 3. In addition, the control device 7 sends a first processing instruction C1 generated by executing the workpiece processing program 722b to the first processing device 50. The first rotation drive device 36 receiving the rotation instruction (more specifically, the third rotation instruction R3) rotates the chuck body 31, the chuck soft jaws 1 held by the chuck body 31, and the workpiece 9 held by the first holding surface 11 of the chuck soft jaws 1 around the first axis AX. The first processing device 50 receiving the first processing instruction C1 cuts the first portion 95 of the workpiece 9 rotating around the first axis AX (more specifically, the oxidized surface 911b of the workpiece 9 on the third direction DR3 side) using the cutting tool T1. In this way, a cutting surface 92 (more specifically, a first cutting surface 92b) is formed on the workpiece 9.

[0206] (Second processing mode) exist Fig.28 In the example described, the control device 7 can execute the second machining mode by executing the workpiece machining program 722b. The second machining mode is a mode in which the workpiece 9 held by the second holding surface 12 of the chuck jaw 1 is machined using the first machining device 50. Fig.28 In the described example, the second machining mode is executed in a state where the machined surface 92 of the workpiece 9 is held by the second holding surface 12 of the chuck jaws 1. The second machining mode will be described in more detail.

[0207] exist Fig.28 In the example described, the control device 7 sends the second machining command C2 generated by executing the workpiece machining program 722b to the first machining device 50. The first machining device 50 receiving the second machining command C2 machines the workpiece 9 held by the second holding surface 12 of the chuck jaw 1.

[0208] More specifically, the control device 7 sends a rotation instruction (more specifically, a fourth rotation instruction R4) generated by executing the workpiece processing program 722b to the first rotation drive device 36 of the first workpiece holding device 3. In addition, the control device 7 sends a second processing instruction C2 generated by executing the workpiece processing program 722b to the first processing device 50. The first rotation drive device 36 receiving the rotation instruction (more specifically, the fourth rotation instruction R4) rotates the chuck body 31, the chuck soft jaws 1 held by the chuck body 31, and the workpiece 9 held by the second holding surface 12 of the chuck soft jaws 1 around the first axis AX. The first processing device 50 receiving the second processing instruction C2 processes the workpiece 9 rotating around the first axis AX using a tool T such as a cutting tool T1.

[0209] exist Fig.28In the described example, the first machining device 50 holds the cutting tool T1. In this case, the first machining device 50 receiving the second machining command C2 cuts the workpiece 9 rotating about the first axis AX using the cutting tool T1.

[0210] Alternatively or additionally, Fig.30 As illustrated in (d) of FIG. 1 , the first machining device 50 may hold a grinding tool T2. In this case, the first machining device 50 receiving the second machining command C2 grinds the workpiece 9 rotating about the first axis AX using the grinding tool T2.

[0211] Alternatively or additionally, Fig.32 As illustrated in (d) of FIG. 1 , the first machining device 50 may hold a deburring tool T4. In this case, the first machining device 50 receiving the second machining command C2 removes the burr 96b from the workpiece 9 rotating about the first axis AX using the deburring tool T4.

[0212] Alternatively or additionally, Fig.33 As illustrated in (d), the first machining device 50 may hold a milling tool T6. In this case, the first machining device 50 receiving the second machining command C2 performs milling machining on the workpiece 9 using the milling tool T6. The milling machining is performed while the workpiece 9 stops rotating about the first axis AX.

[0213] Alternatively or additionally, Fig.34 As illustrated in (d) of , the first processing device 50 may also hold a gear cutting tool T5. In this case, the first processing device 50 receiving the second processing instruction C2 uses the gear cutting tool T5 to form a gear 96d on the workpiece 9 rotating around the first axis AX. More specifically, the first rotation drive device 36 receiving the rotation instruction rotates the workpiece 9 around the first axis AX, the first processing device 50 receiving the second processing instruction C2 rotates the gear cutting tool T5 around the tool axis, and the first processing device 50 receiving the second processing instruction C2 brings the gear cutting tool T5 into contact with the workpiece 9. As a result, the gear 96d is formed on the workpiece 9 by the contact between the workpiece 9 rotating around the first axis AX and the gear cutting tool T5 rotating around the tool axis.

[0214] When the hybrid machine tool 2 has a second workpiece holding device 4, the control device 7 may execute the first transfer mode, the third processing mode, and the second transfer mode described later after executing the first processing mode and before executing the second processing mode.

[0215] (First transfer mode) exist Fig.24 and Fig.25In the example described, the control device 7 can execute the first transfer mode by executing the workpiece processing program 722b. The first transfer mode is a mode for transferring the workpiece 9 from the first workpiece holding device 3 to the second workpiece holding device 4. The first transfer mode will be described in more detail.

[0216] exist Fig.24 In the example described, the control device 7 sends a first movement instruction M1 generated by executing the workpiece processing program 722b to at least one of the first movement device 81 and the second movement device 82. The movement device receiving the first movement instruction M1 moves one of the first workpiece holding device 3 and the second workpiece holding device 4 toward a direction close to the other of the first workpiece holding device 3 and the second workpiece holding device 4.

[0217] exist Fig.24 In the example described, the control device 7 sends the first holding instruction H1 generated by executing the workpiece processing program 722b to the second drive device 44. The second drive device 44 that receives the first holding instruction H1 moves the claw 42 (more specifically, the soft claw 42a) in a direction close to the workpiece 9 (more specifically, the first cut surface 92b of the workpiece 9). In this way, the workpiece 9 (more specifically, the first cut surface 92b of the workpiece 9) is held by the claw 42 of the second workpiece holding device 4.

[0218] exist Fig.24 In the example described, the control device 7 sends the first hold release command E1 generated by executing the workpiece processing program 722b to the first drive device 34. The first drive device 34 receiving the first hold release command E1 moves the chuck soft jaw 1 in a direction away from the workpiece 9 (more specifically, the oxidized surface 911 of the workpiece 9). In this way, the first workpiece holding device 3 releases the workpiece 9.

[0219] exist Fig.24 and Fig.25 In the described example, the transfer process of transferring the workpiece 9 from the first workpiece holding device 3 to the second workpiece holding device 4 is automatically performed using the first workpiece holding device 3 and the second workpiece holding device 4. Alternatively, at least a part of the transfer process may be performed manually.

[0220] (Third processing mode) exist Fig.26 In the example described, the control device 7 can execute the third processing mode by executing the workpiece processing program 722b. The third processing mode is a mode in which the first processing device 50 processes the workpiece 9 held by the claw 42 (more specifically, the soft claw 42a) of the second workpiece holding device 4. The third processing mode is described in more detail.

[0221] exist Fig.26 In the described example, the control device 7 transmits the third machining command C3 generated by executing the workpiece machining program 722b to the first machining device 50. The first machining device 50 that receives the third machining command C3 machines the workpiece 9 held by the second workpiece holding device 4.

[0222] More specifically, the control device 7 sends a rotation instruction (more specifically, a fifth rotation instruction R5) generated by executing the workpiece processing program 722b to the second rotation drive device 46 of the second workpiece holding device 4. In addition, the control device 7 sends a third processing instruction C3 generated by executing the workpiece processing program 722b to the first processing device 50. The second rotation drive device 46 receiving the rotation instruction (more specifically, the fifth rotation instruction R5) rotates the second chuck body 41, the claw 42 held by the second chuck body 41, and the workpiece 9 held by the claw 42 around the second axis AT. The first processing device 50 receiving the third processing instruction C3 uses the cutting tool T1 to cut the third portion 97 of the workpiece 9 rotating around the second axis AT (more specifically, the oxidized surface 911 of the workpiece 9). In this way, a cutting surface 92 (more specifically, a second cutting surface 92a on the fourth direction DR4 side) is formed on the workpiece 9.

[0223] In addition, if Fig.30 As illustrated in (b) of FIG. 1 , the third machining mode may be executed by the control device 7 to grind the workpiece 9 (e.g., the cut surface 92 of the workpiece). More specifically, the second rotation drive device 46 receiving the fifth rotation instruction R5 may rotate the workpiece 9 around the second axis AT, and the first machining device 50 receiving the third machining instruction C3 from the control device 7 may grind the workpiece 9 rotating around the second axis AT using the grinding tool T2.

[0224] Alternatively or additionally, Fig.32 As illustrated in (b) of FIG. 1 , the third machining mode may be executed by the control device to form the internal gear 96 c on the workpiece 9. More specifically, the second rotation drive device 46 receiving the fifth rotation instruction R5 may rotate the workpiece 9 around the second axis AT, the first machining device 50 receiving the third machining instruction C3 may rotate the gear cutting cutter T3 around the tool axis, and the first machining device 50 receiving the third machining instruction C3 may bring the gear cutting cutter T3 into contact with the inner peripheral surface of the workpiece 9.

[0225] (Second transfer mode) exist Fig. 27 In the example described, the control device 7 can execute the second transfer mode by executing the workpiece processing program 722b. The second transfer mode is a mode for transferring the workpiece 9 from the second workpiece holding device 4 to the first workpiece holding device 3. The second transfer mode will be described in more detail.

[0226] exist Fig. 27 In the example described, the control device 7 sends a second movement instruction M2 generated by executing the workpiece processing program 722b to at least one of the first movement device 81 and the second movement device 82. The movement device receiving the second movement instruction M2 moves one of the first workpiece holding device 3 and the second workpiece holding device 4 toward a direction close to the other of the first workpiece holding device 3 and the second workpiece holding device 4.

[0227] exist Fig. 27 In the example described, the control device 7 sends the second holding instruction H2 generated by executing the workpiece processing program 722b to the first drive device 34. The first drive device 34 that receives the second holding instruction H2 moves the second holding surface 12 of the chuck jaw 1 in a direction close to the cutting surface 92 of the workpiece 9 (more specifically, the second cutting surface 92a on the fourth direction DR4 side of the workpiece 9). In this way, the cutting surface 92 of the workpiece 9 is held by the second holding surface 12 of the chuck jaw 1.

[0228] exist Fig. 27 In the example described, the control device 7 sends the second hold release command E2 generated by executing the workpiece processing program 722b to the second drive device 44. The second drive device 44 receiving the second hold release command E2 moves the claw 42 (more specifically, the soft claw 42a) in a direction away from the workpiece 9. In this way, the hold of the workpiece 9 by the second workpiece holding device 4 is released.

[0229] exist Fig. 27 In the described example, the transfer process of transferring the workpiece 9 from the first workpiece holding device 3 to the second workpiece holding device 4 is automatically performed using the first workpiece holding device 3 and the second workpiece holding device 4. Alternatively, at least a part of the transfer process may be performed manually.

[0230] The present invention is not limited to the above-mentioned embodiments or variations. Obviously, the embodiments or variations can be appropriately modified or changed within the scope of the technical concept of the present invention. In addition, as long as no technical contradiction occurs, the various technologies used in the embodiments or variations can also be applied to other embodiments or other variations. Furthermore, any additional structure in the embodiments or variations can be appropriately omitted. Description of Reference Numerals

[0231] 1 Chuck soft jaw, 1B Second chuck soft jaw, 1C Third chuck soft jaw, 2 Hybrid machine tool, 3 First workpiece holding device, 4 Second workpiece holding device, 5 Processing device, 7 Control device, 9, 9A, 9B, 9C, 9D Workpiece, 10 Block, 10a Middle portion, 10b Front end portion, 11 First holding surface, 11a Surface formed by quenching, 11b Metal stacking surface, 12 Second holding surface, 14 Base portion, 15 Through hole portion, 16 First step surface, 17 Second step surface, 18 Connecting surface, 31 Chuck body, 32 Movable portion, 33 Base portion, 34 First drive device, 36 First rotation drive device, 41 Second chuck body, 42 Jaw, 42a Soft jaw, 44 Second drive device, 46 Second rotation drive device, 48 Tail stock, 50 First processing device, 52 First head, 55 First head moving device, 55a first motor, 55b second motor, 55c third motor, 57 rotation drive device, 60 second processing device, 61 laser irradiation device, 62 second head, 64 second head moving device, 64a fourth motor, 64b fifth motor, 64c sixth motor, 66 additive processing device, 67 laser head, 68 nozzle, 69 third head moving device, 69a seventh motor, 69b eighth motor, 69c ninth motor, 71 processor, 72 storage device, 73 communication circuit, 74 input device, 75 bus, 80 base, 81 first moving device, 82 second moving device, 91 first surface of workpiece, 91m surface formed by cutting the inner surface of workpiece, 91n inner surface of workpiece, 91u outer surface of workpiece, 91v surface formed by cutting the outer surface of workpiece, 92 cutting surface, 92a second cutting surface, 92b first cutting surface, 95 first part, 96 second part, 96b burr, 96c internal gear, 96d gear, 96h hole, 97 third part, 111 concavoconvex, 111v groove, 115 first arcuate surface, 122 cut surface, 125 second arcuate surface, 142 first concavoconvex part, 312 second concavoconvex part, 722 machining program, 722a soft jaw forming program, 722b workpiece machining program, 742 display with touch panel, 911, 911a, 911b oxidized surface, AT second axis, AW center axis of workpiece, AX first axis, BL raw material block, BL1 cut surface of raw material block, BT bolt, LB laser, N metal material, P metal powder, T tool, T1 cutting tool, T2 grinding tool, T3 gear turning tool, T4 deburring tool, T5 gear cutting tool, T6 milling tool, V groove.

Claims

1. A chuck soft jaw supported by a chuck body so as to be movable in a first direction away from a central axis of the chuck body and in a second direction close to the central axis, in, The chuck soft jaws have: a first holding surface capable of holding a first surface of a workpiece; and A second holding surface can hold the cutting surface of the workpiece, The first holding surface has a higher hardness than the second holding surface.

2. The chuck soft jaw according to claim 1, in, The second holding surface is a machined surface.

3. The chuck soft jaw according to claim 1 or 2, in, The first holding surface is a surface formed by heat treatment.

4. The chuck soft jaw according to any one of claims 1 to 3, in, The first holding surface is a metal laminate surface.

5. The chuck soft jaw according to any one of claims 1 to 4, in, having a base mounted on the chuck body, The second holding surface is arranged between the first holding surface and the base portion in a direction along the central axis of the chuck body.

6. The chuck soft jaw according to any one of claims 1 to 5, in, The first holding surface is a surface that holds the outer surface of the workpiece, A distance between the central axis of the chuck body and the second holding surface is smaller than a distance between the central axis of the chuck body and the first holding surface.

7. The chuck soft jaw according to any one of claims 1 to 5, in, The first holding surface is a surface for holding the inner surface of the workpiece, A distance between the central axis of the chuck body and the second holding surface is greater than a distance between the central axis of the chuck body and the first holding surface.

8. A method for forming a chuck soft jaw, which is the method for forming a chuck soft jaw according to any one of claims 1 to 7, in, The forming method of the chuck soft jaws comprises: The step of installing a raw material block into the chuck body; as well as a step of forming a chuck soft jaw from the raw material block in a state where the raw material block is mounted on the chuck body, The process of forming the chuck soft jaw from the raw material block comprises: forming the first retaining surface on the raw material block by processing the raw material block; and The second holding surface is formed on the raw material block by cutting the raw material block.

9. The method for forming a chuck soft jaw according to claim 8, in, Forming the first holding surface on the raw material block includes at least one of irradiating the raw material block with laser light and adding a metal material having a harderness than that of the raw material block to the raw material block.

10. A workpiece processing method, comprising: The step of preparing a chuck soft jaw having a first holding surface and a second holding surface, wherein the first holding surface has a higher hardness than the second holding surface; The step of mounting the workpiece on the chuck soft jaw supported by the chuck body of the first workpiece holding device so as to be movable in a first direction away from the central axis of the chuck body and in a second direction close to the central axis; a step of cutting a first portion of the workpiece while the oxidized surface of the workpiece is held by the first holding surface of the chuck soft jaws; as well as a step of machining a second portion of the workpiece in a state where a machined surface formed by machining the oxidized surface of the workpiece is held on the second holding surface of the chuck soft jaw.

11. The workpiece processing method according to claim 10, further comprising: After performing the step of cutting the first portion of the workpiece, transferring the workpiece from the first workpiece holding device to a second workpiece holding device; a step of cutting the oxidized surface of the workpiece held by the second workpiece holding device to form the cut surface on the workpiece; and and a step of transferring the workpiece from the second workpiece holding device to the first workpiece holding device so that the cut surface is held by the second holding surface.

12. A hybrid machine tool, comprising: a plurality of processing devices for forming chuck soft jaws from a raw material block mounted on a chuck body, the chuck soft jaws having a first holding surface for holding an oxidized surface of a workpiece and a second holding surface for holding a cut surface of the workpiece; a first workpiece holding device for holding the workpiece by means of the chuck soft jaws; and a control device for controlling the plurality of processing devices and the first workpiece holding device, The first workpiece holding device comprises: The chuck body supports the chuck soft jaw having the first holding surface and the second holding surface; A first driving device moves the chuck soft jaws in a first direction away from the central axis of the chuck body or in a second direction close to the central axis; and A rotation drive device is provided to rotate the chuck body around the central axis, The plurality of processing devices include: a first processing device for forming the second holding surface on the raw material block by cutting the raw material block mounted on the chuck body; and The second processing device processes the raw material block mounted on the chuck body to form the first holding surface having a harder hardness than the second holding surface on the raw material block.

13. The hybrid machine tool according to claim 12, in, A second workpiece holding device is further provided, the second workpiece holding device can receive the workpiece from the first workpiece holding device and can deliver the workpiece to the first workpiece holding device, The second workpiece holding device has: a second chuck body supporting jaws capable of holding the workpiece; as well as The second rotation driving device rotates the second chuck body around the central axis of the second chuck body.

14. The hybrid machine tool according to claim 12 or 13, in, The second processing device includes at least one of a laser irradiation device for heat-treating the raw material block and an additive processing device for adding a metal material having a harder hardness than the raw material block to the raw material block.

15. The hybrid machine tool according to any one of claims 12 to 14, in, A storage device is also provided, wherein the storage device stores a soft claw forming program executed by the control device and a workpiece processing program executed by the control device, The second processing device receiving the first holding surface forming instruction from the control device executing the soft claw forming program is configured to form the first holding surface having a hardness higher than that of the original surface of the raw material block on the raw material block mounted on the chuck body, The first machining device, which receives a first machining command from the control device that executes the workpiece machining program, is configured to machine the workpiece held by the first holding surface of the chuck jaw.

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