Jig device and jig unit

Abstract

A jig device (100) for a workpiece (W) in a machine tool is provided with: a holding mechanism (110) for holding the workpiece in a cantilevered state; and a main shaft direction support mechanism (120) that has at least one main shaft direction support member (121) disposed so as to face the workpiece held by the holding mechanism in a cantilevered state from the opposite side of the main shaft (200) in the main shaft direction of the machine tool, and also has a main shaft direction drive member (125) that drives the main shaft (200) in the main shaft direction of the machine tool. And a main shaft direction drive member (125) for driving the main shaft direction support member in the main shaft direction between a main shaft direction support position where the main shaft direction support member is in contact with the workpiece and a main shaft direction retracted position where the main shaft direction support member is separated from the workpiece. The contact position of the main axis direction support member and the workpiece can be changed in an orthogonal plane orthogonal to the main axis direction.

Description

Technical Field

[0001] The present invention relates to a jig device for holding a workpiece in a cantilever state and a jig unit for the jig device. Background Art

[0002] Patent document 1 describes a lower jig device for a six-face machining center. The lower jig device includes a fixed lower jig that supports a workpiece using a workpiece support surface and a lifting lower jig that is arranged in a manner that allows it to be lifted and lowered. Furthermore, when the lifting lower jig is raised, the workpiece support surface of the lifting lower jig and the workpiece support surface of the fixed lower jig become coplanar. Furthermore, when the lifting lower jig is lowered, the workpiece support surface of the lifting lower jig becomes lower than the workpiece support surface of the fixed lower jig.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-18944 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] When a workpiece is processed by a machine tool for processing a workpiece as a product, such as a machine tool called a machining center, the workpiece is held by a jig device. Moreover, when a workpiece is processed in large quantities, a general-purpose jig device is used. On the other hand, when a variety of workpieces are processed in small quantities each time, a dedicated jig device is used for each workpiece. When a dedicated jig device is used in this way, when the processing surface is changed, a process of stopping the machine tool and removing the workpiece from the jig device is generated. In addition to this removal process, a process of installing the removed workpiece on other jig devices is also generated. As a result, the processing time becomes longer due to the number of loading and unloading processes of the workpiece and the stop time of the machine tool. As a result, the processing efficiency of the workpiece is reduced.

[0008] Solutions for solving problems

[0009] A jig device of one embodiment is a jig device for a workpiece in a machine tool, wherein the jig device comprises: a holding mechanism that holds the workpiece in a cantilever state; and a spindle direction supporting mechanism that has at least one spindle direction supporting member and has a spindle direction driving component, the spindle direction supporting member being arranged opposite to the workpiece from the opposite side of the spindle in the spindle direction of the machine tool with respect to the workpiece held in the cantilever state on the holding mechanism, the spindle direction driving component driving the spindle direction supporting member in the spindle direction between a spindle direction supporting position in contact with the workpiece and a spindle direction retreat position away from the workpiece, the spindle direction supporting mechanism being configured to be able to change the contact position of the spindle direction supporting member with the workpiece in an orthogonal plane orthogonal to the spindle direction.

[0010] In addition, another embodiment of a jig unit is a jig unit for a jig device for a workpiece held in a cantilever state in a machine tool, wherein the jig unit includes a spindle direction support mechanism, the spindle direction support mechanism has at least one spindle direction support member and a spindle direction drive component, the spindle direction support member is arranged relative to the workpiece held in a cantilever state from the opposite side of the spindle in the spindle direction of the machine tool relative to the workpiece, the spindle direction drive component drives the spindle direction support member in the spindle direction between a spindle direction support position in contact with the workpiece and a spindle direction retreat position away from the workpiece, and the spindle direction support mechanism is configured to be able to change the contact position of the spindle direction support member with the workpiece in an orthogonal plane orthogonal to the spindle direction.

[0011] Effects of the Invention

[0012] Thus, it is possible to provide a jig device that can cope with various processing conditions applied to the workpiece and improve the processing efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic perspective view of a jig device.

[0014] Figure 2 It is a schematic side view of the main support member in the support position.

[0015] Figure 3 This is a schematic perspective view of the auxiliary support mechanism in the standby position.

[0016] Figure 4 This is a schematic perspective view of a jig device.

[0017] Figure 5 This is a schematic perspective view of a jig device of a deformation type.

[0018] Figure 6A is a schematic diagram showing the situation before pulling in. Figure 6 B is a schematic diagram showing the situation after pulling in. DETAILED DESCRIPTION

[0019] Hereinafter, an exemplary embodiment for implementing the present invention will be described in detail with reference to the accompanying drawings. However, the dimensions, materials, shapes, and relative positions of the components described in the following embodiments can be set arbitrarily and can be changed according to the configuration or various conditions of the device or method to which the present invention is applied. In addition, unless otherwise specified, the scope of the present invention is not limited to the embodiments specifically described below. In addition, in this specification, the side of the machine tool where the spindle is configured corresponds to "upper", and the opposite side corresponds to "lower".

[0020] Example

[0021] Reference Figure 1 , a jig device 100 for holding a workpiece W in a cantilevered state on a table 210 of a machine tool (not shown), that is, above the table 210, is described. Figure 1 This is a schematic perspective view of the jig device 100 as viewed obliquely from above. As an example, the jig device 100 of this embodiment is installed inside a machine tool, and holds and supports a workpiece W as a processing object in a cantilever state.

[0022] For example, the machine tool performs drilling, milling, or chamfering on the workpiece W. As a specific example, the processing machine is a three-axis processing machine that processes three surfaces of the workpiece W when the workpiece W is a rectangular parallelepiped, or a five-axis processing machine that processes five surfaces of the workpiece W. Moreover, the processing machine is a vertical processing machine, a horizontal processing machine, or a gate-type processing machine. However, in the following description, the example in which the machine tool is a vertical three-axis processing machine is mainly described.

[0023] The fixture device 100 is disposed between the workbench 210 of the machine tool and Figure 1 In the figure, the workbench 210 is between the main axis 200 of the machine tool indicated by the dotted line. In addition, the workbench 210 may also be able to move in a state where the fixture device 100 is provided. For example, the workbench 210 may be able to move up and down in a direction parallel to the main axis direction of the machine tool (hereinafter also referred to as the Z direction), and may also be able to rotate around a rotation axis parallel to the Z direction. Moreover, the workbench 210 may be able to move parallel to a direction orthogonal to the main axis direction (hereinafter also referred to as the X direction or the Y direction), and may also be able to rotate around a rotation axis parallel to the X direction or the Y direction.

[0024] The jig device 100 includes a holding mechanism 110 for holding the workpiece W in a cantilever state, and a jig unit U. The jig unit U includes a main support mechanism 120 as an example of a main axis direction support mechanism having a main axis direction support member and a main axis direction support mechanism described later. The jig unit U includes a sub-support mechanism 130 as an example of a second axis direction support mechanism having a second axis direction support member described later.

[0025] The holding mechanism 110 holds the end of the workpiece W in the first axis direction perpendicular to the spindle direction (hereinafter, also referred to as the holding end) in a cantilever state. That is, when the holding mechanism 110 holds the holding end of the workpiece W in the X direction, which is defined as the first axis direction perpendicular to the spindle direction, the other end of the workpiece W in the X direction becomes a free end. On the other hand, when the holding mechanism 110 holds the holding end of the workpiece W in the Y direction, which is defined as the first axis direction perpendicular to the spindle direction, the other end of the workpiece W in the Y direction becomes a free end.

[0026] Furthermore, when the holding mechanism 110 holds the holding end portion of the workpiece W in the X direction, the second axis direction support member of the auxiliary support mechanism 130 faces the workpiece W in the Y direction which is defined as the second axis direction orthogonal to the main axis direction and the X direction. On the other hand, when the holding mechanism 110 holds the holding end portion of the workpiece W in the Y direction, the second axis direction support member faces the workpiece W in the X direction which is defined as the second axis direction orthogonal to the main axis direction and the Y direction. However, in the following description, an example in which the holding mechanism 110 holds the holding end portion of the workpiece W in the X direction which is the first axis direction will be mainly described.

[0027] [Retaining mechanism 110]

[0028] A chuck 111 as a holding component for clamping the workpiece W is installed on the holding mechanism 110. As an example, the chuck 111 can be loaded and unloaded relative to the holding mechanism 110. For example, the chuck 111 has a pair of movable claws. And, the holding end of the workpiece W is clamped by the pair of claws, so that the holding mechanism 110 holds the workpiece W. Alternatively, the chuck 111 may also have three or more claws. And, the holding component may also be an adsorption device that adsorbs and holds the holding end of the workpiece W.

[0029] The chuck 111 automatically clamps the workpiece W when the machined workpiece W and the unmachined workpiece W are exchanged without stopping the machine tool, which is called external workpiece exchange. For example, the machined workpiece W is sent out to the outside of the machine tool by the robot arm. Then, the unmachined workpiece W is sent into the inside of the machine tool by the robot arm. Then, the chuck 111 automatically clamps the sent unmachined workpiece W.

[0030] In addition, the holding mechanism 110 has a rotating mechanism 112 that rotates the workpiece W around a rotation axis that is orthogonal to the spindle direction. The rotating mechanism 112 is called, for example, a dividing table or a rotating table. Specifically, as a rotation axis that is orthogonal to the spindle direction, the rotating mechanism 112 rotates the chuck 111 within a range of 360 degrees around a rotation axis X1 that is parallel to the X direction. Thus, the rotating mechanism 112 can rotate the workpiece W held by the chuck 111 around the rotation axis X1.

[0031] The workpiece W is rotated by the rotating mechanism 112, so that the machine tool can process four sides of the workpiece W. For example, when the workpiece W is a rectangular parallelepiped, the machine tool can process four sides, namely, two sides arranged in the Z direction as the main axis direction and two sides arranged in the Y direction orthogonal to the Z direction. In addition, the holding mechanism 110 is built with a rotation drive component (not shown) that drives the rotating mechanism 112. As an example, the rotation drive component includes a driving device that outputs a rotational motion and a rotation transmission mechanism connected to the output shaft of the driving device.

[0032] In addition, the holding mechanism 110 may also have a first rotating mechanism and a second rotating mechanism. The first rotating mechanism rotates the workpiece W around a first rotating axis orthogonal to the spindle direction. Moreover, the second rotating mechanism rotates the workpiece W around a second rotating axis orthogonal to the spindle direction and the first rotating axis. For example, the rotating mechanism 112 as the first rotating mechanism rotates the workpiece W around a rotating axis X1 parallel to the X direction as the first rotating axis orthogonal to the spindle direction, i.e., the Z direction. Moreover, the second rotating mechanism (not shown) rotates the workpiece W around a rotating axis Y2 parallel to the Y direction as the second rotating axis orthogonal to the Z direction and the rotating axis X1.

[0033] Specifically, the second rotating mechanism rotates the holding mechanism 110 90 degrees around the rotation axis Y2. As a result, the free end of the workpiece W held by the chuck 111 faces the spindle 200. That is, the free end of the workpiece W faces Figure 1 Therefore, the machine tool can process a total of five surfaces, namely, two surfaces arranged in the Z direction, two surfaces arranged in the Y direction, and one surface on the free end side. The one surface on the free end side faces the side opposite to the holding mechanism 110 before rotating around the rotation axis Y2. In addition, the holding mechanism 110 has a built-in rotation drive component (not shown) that drives the second rotation mechanism.

[0034] As an example, the second rotating mechanism rotates the holding mechanism 110 separately from the main supporting mechanism 120 about the rotation axis Y2. That is, the second rotating mechanism rotates the holding mechanism 110 without rotating the main supporting mechanism 120. In this case, the workpiece W is not supported by the main supporting mechanism 120, and the load during machining in the spindle direction after the rotation is applied to the holding mechanism 110 that holds the workpiece W in a cantilever state. Therefore, the workpiece W is supported by the holding mechanism 110, and deformation of the workpiece W due to the load during machining can be suppressed.

[0035] [Spindle direction support mechanism]

[0036] like Figure 2 As shown in FIG. 1 , the main support mechanism 120 has at least one main support member 121 as an example of a main axis direction support member. The main support member 121 is arranged to face the workpiece W held by the holding mechanism 110 on the opposite side of the main axis 200 in the main axis direction of the machine tool. That is, the main support member 121 is located below the chuck 111 of the holding mechanism 110 and on the main axis 200 side relative to the holding mechanism 110.

[0037] exist Figure 1 In the example of FIG. 1 , the main support mechanism 120 has 25 main support members 121 arranged in a matrix of five columns in the X direction and five columns in the Y direction. Alternatively, the main support member 121 may be one, or may be less than 24 or more than 26. In addition, the main support members 121 may be arranged in other forms such as a staggered grid, or may be arranged irregularly.

[0038] In addition, the main support mechanism 120 has a main drive unit 125 ( Figure 1 ) is an example of a main axis direction driving component for driving the main support member 121. In the main axis direction, the main drive unit 125 drives the main support member 121 between a main axis direction support position where the main support member 121 contacts the workpiece W and a main axis direction retreat position where the main support member 121 is away from the workpiece W. Specifically, in the Z direction as the main axis direction, the main drive unit 125 drives the main support member 121 between a main axis direction support position where the main support member 121 contacts the workpiece W and a main axis direction retreat position where the main support member 121 is away from the workpiece W. Figure 2 The main support member 121A in the main axis direction retreat position shown in the figure protrudes upward toward the main axis direction support position. Figure 2 The main support member 121B in the main axis direction support position shown is retracted downward toward the main axis direction retracted position.

[0039] Reference Figure 2 , the driving of the main supporting member 121 is described. In addition, Figure 21 is a schematic side view of the main support member 121, and a portion of the main support member 121 is located at the main axis direction support position. Figure 2 , five main support members 121 are shown. In addition, the top ends of the main support members 121 are flat, and the top end surfaces thereof are in contact with the workpiece W. Alternatively, the top ends of the main support members 121 may have other shapes such as spherical or hemispherical.

[0040] Each main support member 121 is a substantially cylindrical member that is displaced from a main axis direction retreat position toward a main axis direction support position. Furthermore, the main support member 121 is raised toward the workpiece W by the power supplied by the main drive unit 125. For example, the main support member 121 is driven by electricity, air pressure, hydraulic pressure, or the spring force of a compression spring. As an example, the main support member 121 is a pin or a rod of a direct-acting actuator such as a solenoid actuator, a feed screw, a cylinder, or a hydraulic cylinder.

[0041] like Figure 2 As shown in FIG. 1 , the main support member 121 stops rising when it contacts the workpiece W. After that, the rising and falling of the main support member 121 are restricted. Thus, the workpiece W held in a cantilever state on the chuck 111 is supported by the main support member 121. After that, when the processing is completed, the main support member 121 is lowered. Then, the lowered main support member 121 stops at the main axis direction retreat position.

[0042] The main support mechanism 120 is configured to be able to change the contact position of the main support member 121 and the workpiece W in an orthogonal plane orthogonal to the main axis direction. That is, the main drive unit 125 of the main support mechanism 120 is configured to selectively drive the main support member 121 protruding to the contact position with the workpiece W in an orthogonal plane orthogonal to the Z direction as the main axis direction, that is, the XY plane.

[0043] Specifically, the main support mechanism 120 has a plurality of main support members 121 arranged at different positions in an orthogonal plane orthogonal to the main axis direction. Moreover, the plurality of main support members 121 are divided in such a manner that each drive unit driven by the main drive unit 125 includes at least one main support member 121. As an example, twenty-five drive units each including one main support member 121 are set in the main support mechanism 120. However, the drive unit can be set to include any number of main support members 121. For example, the drive unit can be set to include five main support members 121 arranged in a row.

[0044] The main drive unit 125 drives each main support member 121 for each drive unit. For example, when twenty-five drive units are set, the main drive unit 125 selectively drives each main support member 121. When five drive units are set so as to each include five main support members 121 arranged in a row, the main drive unit 125 selectively drives every five main support members 121.

[0045] For example, the main drive unit 125 is controlled by a control device (e.g., a processor) which is an example of a computer provided in the machine tool and is not shown. The main drive unit 125 projects the main support member 121 at a position corresponding to the shape of the workpiece W recognized by the control device. Figure 2 In the example of FIG. 1 , the main driving unit 125 causes the three main supporting members 121 located at positions corresponding to the shape of the workpiece W to protrude.

[0046] As an example, the control device acquires pin identification information (e.g., pin number) for identifying the protruding main support member 121. The pin identification information can be acquired from a memory as a storage device provided in the machine tool or an external storage device provided outside the machine tool. Alternatively, the control device may acquire pin identification information manually input by an operator. Then, the control device uses the pin identification information corresponding to the workpiece W as the processing object to identify and select the protruding main support member 121.

[0047] Then, the control device causes the selected main support member 121 to protrude at a predetermined protrusion timing by using the main drive unit 125. The protrusion timing is, for example, the timing when the chuck 111 completes holding of the workpiece W, or the timing when the chuck 111 that holds the workpiece W completes rotation by the rotation mechanism 112. Furthermore, the control device causes the selected main support member 121 to retreat at a predetermined retreat timing by using the main drive unit 125. The retreat timing is, for example, the timing when processing of one side of the workpiece W is completed.

[0048] Alternatively, the control device may recognize the shape of the workpiece W using a detection device such as a sensor or a camera. In this case, the control device identifies the main support member 121 located at a position corresponding to the recognized shape of the workpiece W. Then, the control device causes the main drive unit 125 to project the identified main support member 121 at a predetermined projecting timing. In addition, the control device causes the main drive unit 125 to retract the identified main support member 121 at a predetermined retracting timing.

[0049] In this way, the main support mechanism 120 selects the main support member 121 that protrudes. As a result, the main support member 121 located at a position in contact with the workpiece W in the XY plane selectively protrudes. Therefore, the main support mechanism 120 can change the contact position of the main support member 121 and the workpiece W in the XY plane according to the shape of the workpiece W. As a result, the workpiece W processed into various shapes can be supported by the same jig device 100.

[0050] In addition, when processing is performed near the free end away from the holding end, a downward load centered at the fixed position is applied to the cantilevered workpiece W. Therefore, the main support member 121 near the free end is raised to support the free end from the bottom. Thus, deformation of the workpiece W during processing can be suppressed.

[0051] In addition, the jig device 100 is provided with a first moving mechanism (not shown) for moving the main support mechanism 120 on the workbench 210. The first moving mechanism moves the main support mechanism 120 in the X direction orthogonal to the Z direction which is the main axis direction. As an example, the first moving mechanism includes a slider that moves linearly. Moreover, the stage 220 on which the main support mechanism 120 is mounted is fixed relative to the slider, and the two move together. Furthermore, the jig device 100 is provided with a second moving mechanism (not shown) for moving the main support mechanism 120 in the Y direction orthogonal to the Z direction.

[0052] Alternatively, the moving mechanism for moving the stage 220 may be an air floating type moving mechanism that moves the floating stage 220 by supplying air from below the self-supporting mechanism 120. In addition, the jig device 100 may also include a rotating moving mechanism that rotates the stage 220 around a rotation axis parallel to the main axis direction as the moving mechanism for moving the stage 220. For example, the jig device 100 may also include a rotating table on which the stage 220 is placed as the rotating moving mechanism.

[0053] Alternatively, the main support mechanism 120 may also have one or a small number of main support members 121. In this case, the main support mechanism 120 moves in the X direction and the Y direction which are orthogonal to the Z direction which is the main axis direction. Thus, the main support mechanism 120 can change the contact position of the main support member 121 with the workpiece W in the XY plane according to the shape of the workpiece W. For example, the movement of the main support mechanism 120 in the X direction and the Y direction is controlled by the control device of the machine tool. Moreover, when the main support member 121 moves to be located below the workpiece W, the main drive unit 125 drives the main support member 121.

[0054] In addition, when processing the workpiece W, a waterproof or dustproof cover (not shown) is covered on the main axis side of the main support mechanism 120. As a result, the periphery of the main support member 121 is covered with the cover. Therefore, it is possible to prevent liquid such as water or dust such as chips from accumulating around the main support member 121.

[0055] In addition, through holes are formed at positions of the cover corresponding to the main support members 121. That is, the cover is formed with through holes in a number corresponding to the number of the main support members 121. Moreover, the top ends of the main support members 121 are exposed from the through holes. Therefore, the main support members 121 driven by the main drive unit 125 protrude through the through holes. As a result, the upper part of the main support member 121 located at the main axis direction support position is exposed from the through holes.

[0056] [Second axis direction support mechanism]

[0057] like Figure 1 As shown in FIG. 1 , the jig device 100 includes a sub-support mechanism 130 disposed on the opposite side of the holding mechanism 110 relative to the main support mechanism 120. Figure 3 As shown, the auxiliary support mechanism 130 has an auxiliary support member 131 as an example of a second axial direction support member. Furthermore, when a first axial direction orthogonal to the main axial direction and a second axial direction orthogonal to the main axial direction and the first axial direction are defined, the auxiliary support member 131 is opposite to the workpiece W in the second axial direction. In addition, Figure 3 Shows from Figure 1 The auxiliary support mechanism 130 located at the standby position as viewed from the viewing direction A.

[0058] Here, the first axis direction refers to a direction from one end (holding end) of the workpiece W held by the holding mechanism 110 toward the free end. Figure 3 In the example of FIG. 1 , the auxiliary support member 131 faces the workpiece W (not shown) in the Y direction orthogonal to the Z direction which is the main axis direction. Figure 3 In the example shown in FIG. 1 , the holding mechanism 110 holds one end portion of the workpiece W in the X direction.

[0059] In addition, when the direction in which the holding end of the workpiece W held by the self-holding mechanism 110 extends toward the free end is the X direction, the second axis direction is the Y direction. Furthermore, the sub-support member 131 supports the workpiece W in the Y direction. On the other hand, when the direction in which the holding end of the workpiece W held by the self-holding mechanism 110 extends toward the free end is the Y direction, the second axis direction is the X direction. Furthermore, the sub-support member 131 supports the workpiece W in the X direction. That is, the sub-support mechanism 130 supports the workpiece W by supporting the load applied to the sub-support mechanism 130 via the held workpiece W.

[0060] In addition, the auxiliary support mechanism 130 includes an auxiliary drive unit 135 as an example of a second axial direction driving component that drives the auxiliary support member 131. In the second axial direction, the auxiliary drive unit 135 drives the auxiliary support member 131 between a second axial direction support position where the auxiliary support member 131 contacts the workpiece W and a second axial direction retreat position where the auxiliary support member 131 is separated from the workpiece W. Specifically, in the Y direction as the second axial direction, the auxiliary drive unit 135 drives the auxiliary support member 131 between the second axial direction support position where the auxiliary support member 131 contacts the workpiece W and the second axial direction retreat position where the auxiliary support member 131 is separated from the workpiece W. Figure 3 The auxiliary support member 131 at the second axial direction retreat position shown in the figure protrudes toward the second axial direction support position. In addition, in the Y direction, the auxiliary driving unit 135 retreats the auxiliary support member 131 protruding to the second axial direction support position toward the second axial direction retreat position.

[0061] Specifically, refer to Figure 3 and Figure 4 , the driving of the auxiliary support member 131 is described. In addition, Figure 3 1 is a schematic perspective view of the auxiliary support member 131 located at the retracted position in the second axial direction. Figure 4 2 is a schematic perspective view of the jig device 100 in which the auxiliary support member 131 is located at the second axial direction support position. Figure 3 and Figure 4 , one of a pair of auxiliary support members 131 arranged to sandwich the workpiece W is shown. The top end of the auxiliary support member 131 is flat, and the top end surface thereof contacts the workpiece W. Alternatively, the top end of the auxiliary support member 131 may have other shapes such as a spherical shape or a hemispherical shape.

[0062] Each auxiliary support member 131 is a substantially cylindrical member that is displaced from the second axial direction retreat position toward the second axial direction support position. Moreover, the auxiliary support member 131 is driven by the power supplied from the auxiliary drive unit 135. For example, the auxiliary support member 131 is driven by electricity, air pressure, hydraulic pressure, or the spring force of a compression spring. As an example, the auxiliary support member 131 is a pin or rod of a direct-acting actuator such as a solenoid actuator, a feed screw, a cylinder, or a hydraulic cylinder.

[0063] Then, the protrusion of the auxiliary support member 131 stops when it contacts the workpiece W. Thereafter, the protrusion and retreat of the auxiliary support member 131 are restricted. Thus, the load applied in the Y direction to the workpiece W held in the cantilever state on the chuck 111 is supported by the auxiliary support member 131. Thereafter, when the processing is completed, the auxiliary support member 131 retreats. And, the retreated auxiliary support member 131 stops at the retreat position in the second axis direction.

[0064] The auxiliary support mechanism 130 is configured to be able to change the position of the auxiliary support member 131 in a parallel plane parallel to the main axis direction and the first axis direction. Specifically, the auxiliary support mechanism 130 has a parallel rotation mechanism 136 that rotates the auxiliary support member 131 around a parallel rotation axis Y3 parallel to the second axis direction so that the position of the auxiliary support member 131 can be changed in the parallel plane. Figure 3 In the example, the parallel rotation mechanism 136 of the auxiliary support mechanism 130 rotates the auxiliary support member 131 in the ZX plane which is a parallel plane parallel to the Z direction as the main axis direction and the X direction as the first axis direction.

[0065] That is, in Figure 3 The parallel rotation axis Y3 indicated by a single dotted line is parallel to the Y direction which is the second axis direction. Moreover, the parallel rotation mechanism 136 rotates the auxiliary support member 131 around the parallel rotation axis Y3. To this end, the parallel rotation mechanism 136 includes a driving device for outputting rotational motion, a transmission mechanism such as a gear for transmitting the rotation output from the driving device, and a rotation shaft. The rotation shaft is inserted into the shaft hole (not shown) of the auxiliary support arm 138. Moreover, the auxiliary support arm 138 provided with the auxiliary support member 131 rotates together with the rotation shaft inserted into the shaft hole.

[0066] Thus, the auxiliary support member 131 is moved along Figure 3 The auxiliary support member 131 rotates in the ZX plane in the rotation direction B. Moreover, along the rotation trajectory of the auxiliary support member 131, the position of the auxiliary support member 131 and the contact position between the auxiliary support member 131 and the workpiece W change. In addition, the parallel rotation mechanism 136 can adjust the position of the auxiliary support member 131 in the ZX plane by adjusting the rotation angle.

[0067] In addition, the jig device 100 includes a first moving mechanism that moves the sub-support mechanism 130. Furthermore, the first moving mechanism moves the sub-support mechanism 130 on the workbench 210. Specifically, the first moving mechanism moves the sub-support mechanism 130 along the X direction, which is a second axial direction orthogonal to the Z direction, together with the main support mechanism 120. That is, the sub-support mechanism 130 is fixed to the stage 220 shared with the main support mechanism 120.

[0068] Furthermore, the jig device 100 includes a second moving mechanism (not shown) that moves the sub-support mechanism 130 in the Y direction orthogonal to the Z direction. Furthermore, the second moving mechanism moves the sub-support mechanism 130 in the Y direction together with the main support mechanism 120. Alternatively, the sub-support mechanism 130 may be configured to move in at least one of the X direction and the Y direction separately from the main support mechanism 120. That is, the jig device 100 may also include an independent moving mechanism that moves only the sub-support mechanism 130 in at least one of the X direction and the Y direction.

[0069] For example, the auxiliary driving unit 135 and the parallel rotation mechanism 136 are controlled by the control device of the machine tool. Furthermore, the parallel rotation mechanism 136 rotates the auxiliary support member 131 to a position corresponding to the shape of the workpiece W recognized by the control device. As an example, the parallel rotation mechanism 136 rotates the auxiliary support member 131 to a position corresponding to the shape of the workpiece W recognized by the control device. Figure 3 The auxiliary support member 131 in the standby position shown in FIG. 1 is rotated 90 degrees, and the auxiliary support member 131 is rotated and moved to Figure 4 Thereafter, the auxiliary driving unit 135 causes the auxiliary supporting member 131 to protrude according to the control of the control device.

[0070] The auxiliary support mechanism 130 includes at least two auxiliary support members 131 in a manner of sandwiching the workpiece W from both sides in the second axial direction. Figure 3 As shown, the top end portion of the auxiliary support arm 138 is branched into two branches. In addition, auxiliary support members 131 are respectively arranged at the two top ends. As a result, the workpiece W can be supported from both sides in the second axial direction (for example, the Y direction). In addition, the number of auxiliary support members 131 is not limited to two, and three or more auxiliary support members 131 may be arranged in a manner that the workpiece W is sandwiched from both sides in the second axial direction.

[0071] When machining a workpiece W in a cantilever state, a load is sometimes applied to the workpiece W in a second axis direction (e.g., X direction or Y direction) that is orthogonal to the main axis direction (e.g., Z direction) and is orthogonal to the direction extending from the holding end of the workpiece W toward the free end. For example, when machining a plate-shaped workpiece W with the end face having a narrower width facing upward, the side faces having a wider width are arranged in the second axis direction. At this time, the second axis direction becomes a direction corresponding to the thinner wall thickness, so if a load is applied in the second axis direction, the workpiece W will be deformed. For example, when cutting the above-mentioned end face using an end mill, a load is applied in the tangential direction of the end mill, resulting in a load being applied to the workpiece W in the second axis direction. In this regard, according to the jig device 100 having the auxiliary support mechanism 130, even if a load is applied in the second axis direction, the workpiece W can be supported and the deformation of the workpiece W can be suppressed.

[0072] Alternatively, the auxiliary support member 131 may be configured to support the workpiece W from one side in the second axis direction. That is, the auxiliary support member 131 may be configured only at a position opposite to one side of the workpiece W. In this case, the workpiece W can also be supported from one side. That is, when the workpiece W in a cantilever state is processed, in the second axis direction, a load is sometimes applied mainly from one side of the workpiece W to the other side. In this case, the auxiliary support member 131 may be configured only at a position opposite to the other side of the workpiece W.

[0073] According to the jig device 100 of the present embodiment described above, the processing efficiency of the workpiece W can be improved corresponding to the various processing conditions applied to the workpiece W. For example, when changing the processing surface, the workpiece W can be switched inside the machine tool without stopping the machine tool. As a result, the stop time of the machine tool can be reduced and the processing efficiency of the workpiece W can be improved. In addition, the jig device 100 of the present embodiment can be set in a variety of machine tools. For example, the jig device 100 can be loaded and unloaded relative to a machine tool such as a five-axis machining center or a three-axis machining center. In addition, as an example, the driving device of the above-mentioned main support member 121 or the auxiliary support member 131 is a pressure motor, an electric motor, an ultrasonic motor, etc.

[0074] The present invention has been described above with reference to various embodiments, but the present invention is not limited to the above-mentioned embodiments. Inventions that are changed within the scope of the present invention and inventions equivalent to the present invention are also included in the present invention. In addition, various embodiments and various variations, as well as technical means included in various embodiments or various variations can be appropriately combined within the scope of the present invention.

[0075] For example, the workpiece W may be machined while being supported by the main support mechanism 120, and then the chuck 111 may be rotated 90 degrees. Thus, for example, after the upper surface of the spindle 200 side of the workpiece W is machined, the side surface (i.e., the surface orthogonal to the upper surface and the lower surface) of the workpiece W may be machined while being supported by the main support mechanism 120 and the auxiliary support mechanism 130. Therefore, the workpiece W may be machined into a complex shape without stopping the machine tool.

[0076] Specifically, as shown in the schematic three-dimensional diagram of the fixture device 100, Figure 4 As shown in FIG. 1 , the side surface of the workpiece W can be processed while being supported by the main support mechanism 120 and the auxiliary support mechanism 130. That is, first, as shown in FIG. Figure 2 As shown in FIG. 1 , the upper surface of the workpiece W is processed while the workpiece W is supported by the main support mechanism 120. Then, the chuck 111 of the holding mechanism 110 is rotated 90 degrees around a rotation axis parallel to the X direction. Figure 2 The side surface on the inner side or the front side of the machine tool faces the main spindle 200. Therefore, the side surface of the workpiece W can be machined without stopping the machine tool.

[0077] As another example, the jig device 100 may be arranged on the upper side in the direction of gravity in a suspended state, and the spindle 200 of the machine tool may be arranged on the lower side in the direction of gravity. In this case, powders such as chips generated by processing fall toward the spindle 200. Therefore, it is possible to suppress the accumulation of powders at the processing position. In addition, the jig device 100 may also be installed in a posture rotated 90 degrees relative to the workbench 210. In this case, the spindle direction is orthogonal to the direction of gravity. Thus, the jig device 100 can be installed on a five-axis processing machine or a horizontal processing machine to process the workpiece W.

[0078] In addition, the main support mechanism 120 can also be configured to rotate integrally with the auxiliary support mechanism 130 around a rotation axis parallel to the X direction or the Y direction. That is, the main support mechanism 120 can also be provided with a rotating device that rotates the main support mechanism 120 and the auxiliary support mechanism 130 around the rotation axis. For example, the rotating device rotates the stage 220 on which the main support mechanism 120 and the auxiliary support mechanism 130 are mounted around a rotation axis parallel to the X direction or the Y direction. As an example, the rotating device rotates the stage 220 90 degrees around a rotation axis parallel to the X direction. In this case, the main axis direction is orthogonal to the gravity direction. Thus, the jig device 100 can be installed on a five-axis machining center or a horizontal machining center to process the workpiece W.

[0079] Furthermore, the main support mechanism 120 may be configured to rotate around a rotation axis parallel to the X direction or the Y direction separately from the auxiliary support mechanism 130. That is, the main support mechanism 120 may be provided with a rotating device that does not rotate the auxiliary support mechanism 130 around the rotation axis but only rotates the main support mechanism 120 around the rotation axis. Similarly, the auxiliary support mechanism 130 may be configured to rotate around a rotation axis parallel to the X direction or the Y direction separately from the main support mechanism 120. That is, the auxiliary support mechanism 130 may be provided with a rotating device that does not rotate the main support mechanism 120 around the rotation axis but only rotates the auxiliary support mechanism 130 around the rotation axis.

[0080] In addition, one of the main support mechanism 120 and the auxiliary support mechanism 130 may be omitted. For example, the jig device 100 may include only the main support mechanism 120. Furthermore, the jig device 100 may include only the auxiliary support mechanism 130. As an example, in the jig device 100 including only the auxiliary support mechanism 130, the workpiece W fixed on the stage 220 can be processed. In this case, the workpiece W can also be supported in the Y direction or the Z direction orthogonal to the main axis direction.

[0081] [Transformation method]

[0082] Reference Figure 5 and Figure 6, the deformation-type jig device 300 is described. Figure 5 This is a schematic three-dimensional view of the jig device 300 viewed from obliquely above. Figure 6 1 is a schematic diagram for explaining the hole clamping device 140. In addition, in the description of the modified form, the differences from the above-mentioned embodiment are mainly described, and the components that have been described are marked with the same reference numerals and their descriptions are omitted. Except for special descriptions, the components marked with the same reference numerals achieve substantially the same actions and functions, and their effects are also substantially the same.

[0083] In addition, Figure 5 For the sake of convenience, the auxiliary support mechanism 130 ( Figure 1 ) is shown in the figure. However, the jig device 300 is provided with a sub-support mechanism 130 which is not shown. As an example, the sub-support mechanism 130 is arranged at a position where the hole clamping device 140 is sandwiched between the main support mechanism 120 which is an example of a main axis direction support mechanism. In other words, the sub-support mechanism 130 is arranged on the opposite side of the main support mechanism 120 with respect to the hole clamping device 140.

[0084] like Figure 5 As shown, the jig device 300 includes a holding mechanism 110 for holding the workpiece W3 in a cantilever state, and a jig unit U3. Furthermore, the jig unit U3 includes a hole clamping device 140 as an example of a restraining mechanism for restraining a part of the workpiece W3, so as to limit the displacement of the workpiece W3 in a direction parallel to the main axis direction of the machine tool (hereinafter, also referred to as the Z direction). Furthermore, the jig unit U3 includes a main support mechanism 120 and a sub-support mechanism 130 not shown. Alternatively, the jig unit U3 may not include at least one of the main support mechanism 120 and the sub-support mechanism 130.

[0085] In addition, the hole clamping device 140 is arranged at a position where the main support mechanism 120 is sandwiched between the holding mechanism 110. In other words, the hole clamping device 140 is arranged on the opposite side of the holding mechanism 110 with respect to the main support mechanism 120. In addition, the hole clamping device 140 constrains the protrusion PP protruding from the main body of the workpiece W3 as a part of the workpiece W3. The protrusion PP protrudes from the main body of the workpiece W3 as a processing object and is a remaining part that is not a processing object.

[0086] exist Figure 5In the example, the protrusion PP is the free end of the workpiece W3. That is, when the holding mechanism 110 holds the holding end of the workpiece W3 in the X direction, the other end of the workpiece W3 in the X direction is the protrusion PP. However, the protrusion PP may not be a free end, for example, it may be a side edge extending along the X direction in the workpiece W3. In addition, the outer shape of the protrusion PP is arbitrary, and as an example, it may also have a polygonal, circular, elliptical and other shapes. Moreover, the part of the workpiece W3 constrained by the hole clamping device 140 may also be the remaining part (such as the side edge) continuous from the main body of the workpiece W3.

[0087] By using such a hole clamping device 140, during machining, it is possible to suppress displacement of the workpiece W3 in the Z direction, that is, it is possible to suppress positional deviation or vibration of the workpiece W3 in the spindle direction. Therefore, during machining, it is possible to prevent the workpiece W3 from leaving the main support mechanism 120, that is, the workpiece W3 from being displaced toward the spindle 200. For example, sometimes the holding mechanism 110 holds the workpiece W3 in a manner that the X direction or the Y direction is parallel to the gravity direction. Specifically, sometimes the spindle direction is orthogonal to the gravity direction, and the hole clamping device 140 is located below or above the main support mechanism 120.

[0088] For the workpiece W3 in this state, a force from the processing device is applied in the Z direction horizontal to the gravity direction. In addition, gravity is not applied in the Z direction from the workpiece W3 toward the main support mechanism 120. Therefore, gravity that presses the workpiece W3 is not applied to the main support mechanism 120, and the displacement of the workpiece W3 in the direction away from the main support mechanism 120 cannot be suppressed. However, according to the hole clamping device 140, even in this case, the separation of the workpiece W3 from the main support mechanism 120 can be suppressed by constraining the protrusion PP.

[0089] Alternatively, the jig unit U3 may also replace the hole clamping device 140 or have other restraining mechanisms based thereon. As an example, the other restraining mechanism is an adsorption device that adsorbs and restrains a part of the workpiece W3, a hook that hooks on a part of the workpiece W3, or a holding device that grasps a part of the workpiece W3. In this case, the part restrained by the other restraining mechanism may also be a part of the processing target part of the workpiece W3 or the remaining part of the workpiece W3. In addition, the other restraining mechanism may also be a mechanism that restrains the workpiece W3 from the main spindle 200 side. However, by restraining the workpiece W3 from the side opposite to the main spindle 200, it is possible to avoid interfering with the support of the workpiece W3 by the auxiliary support mechanism 130.

[0090] Furthermore, the jig unit U3 is provided with a moving device 149 for moving the hole clamping device 140 forward and backward in the Z direction. When the hole clamping device 140 is used to constrain the workpiece W3, the moving device 149 moves the hole clamping device 140 in a manner close to the workpiece W3. In addition, after the constraint based on the hole clamping device 140 is released, the moving device 149 moves the hole clamping device 140 in a manner away from the workpiece W3. Alternatively, the moving device 149 may also move the workpiece support portion 141 of the hole clamping device 140 forward and backward in the Z direction.

[0091] [Restriction Agency]

[0092] Reference Figure 6 A and Figure 6 B, the hole clamping device 140 is described. In addition, Figure 6 A and Figure 6 B is a cross section extending in the wall thickness direction of the workpiece W3, and is a schematic diagram of a cross section passing through the central axis (not shown) of the hole H. Figure 6 A represents the situation before the workpiece W3 is pulled toward the hole clamping device 140. In addition, Figure 6 B represents the situation after the workpiece W3 is pulled toward the hole clamping device 140.

[0093] The hole clamp 140 performs the following operation: the workpiece W3 is pushed inwardly into the hole H formed in the protrusion PP, and is pulled toward the hole clamp 140. Figure 6 A and Figure 6 As shown in FIG. 1B , the hole clamping device 140 includes a workpiece support portion 141 and a rod 142 that moves forward and backward relative to the workpiece support portion 141. Figure 6 A and Figure 6 In the example of B, hole H is a through hole, but hole H may also be a blind hole. Furthermore, the workpiece W3, as a portion constrained by the hole clamping device 140, may also have a hole formed in the portion to be processed rather than in the protrusion PP.

[0094] like Figure 6 As shown in FIG. 1A , the hole clamping device 140 has a cap 143 covering the wedge-shaped top end of the rod 142. As an example, the top end of the rod 142 has a shape like a truncated cone. And the cap 143 and the rod 142 are inserted into the inside of the hole H formed in the protrusion PP. And the hole clamping device 140 has a push member 144 that moves forward and backward relative to the cap 143. And a plurality of push members 144 (four as an example) are arranged around the rod 142.

[0095] exist Figure 6 In the state before being pulled in as shown in A, the push member 144 retreats to the inner side of the cap 143. Thereafter, the rod 142 moves to Figure 6 The direction indicated by the arrow A1 of B (i.e., Figure 6 Then, the push member 144 moves along the conical surface at the top of the rod 142 from the cap 143 to the outside indicated by the arrow A2 (i.e., Figure 6 Then, the push member 144 abuts against and bites into the inner surface of the hole H. Then, the hole clamping device 140 uses air pressure or the like to move in the direction indicated by the arrow A3 (i.e., Figure 6 The workpiece W3 is pulled in (in the downward direction of B). As a result, the workpiece W3 is pressed against the support surface of the workpiece support portion 141, and the workpiece W3 is constrained by the hole clamping device 140.

[0096] When the workpiece W3 is released from the restraint, the hole clamping device 140 supplies air pressure to move the rod 142 in the opposite direction to the direction indicated by the arrow A1 (i.e. Figure 6 As a result, the force applied by the top end of the rod 142 to the push member 144 is released. Then, the push member 144 is urged by an elastic member (e.g., a spring or an elastic ring, etc.) not shown in the figure, and moves to the original position inside the cap 143. That is, the push member 144 retreats in the direction opposite to the direction indicated by the arrow A2. As a result, the constraint of the hole clamping device 140 on the workpiece W3 is released.

[0097] As described above, the jig device 300 and the jig unit U3 include a restraining mechanism for restraining a portion of the workpiece W3. Thus, when the workpiece W3 is processed, the workpiece W3 can be prevented from bending and displacing in the Z direction. Therefore, when the workpiece W3 is processed, the workpiece W3 can be prevented from separating from the supporting mechanism 120.

[0098] In addition, the constraint mechanism such as the hole clamping device 140 only needs to restrict the movement of the workpiece W3 in the direction away from the main support mechanism 120. Therefore, the constraint mechanism does not need to pull the workpiece W3 toward the constraint mechanism or the main support mechanism 120. For example, the constraint mechanism may constrain the workpiece W3 by only holding it in a manner of grasping a part of the workpiece W3. Furthermore, the hole clamping device 140 may not pull the workpiece W3 in, but only restrict its movement in the direction away from the hole clamping device 140.

[0099] A part or all of the above-mentioned embodiments may be described as the following supplementary notes, but are not limited to the following contents.

[0100] (Note 1)

[0101] A fixture device is a fixture device for a workpiece in a machine tool, wherein:

[0102] The fixture device has:

[0103] a holding mechanism that holds the workpiece in a cantilevered state; and

[0104] A spindle direction support mechanism, comprising at least one spindle direction support member and a spindle direction drive component, wherein the spindle direction support member is arranged opposite to the workpiece from the side opposite to the spindle in the spindle direction of the machine tool with respect to the workpiece held in a cantilever state on the holding mechanism, and wherein the spindle direction drive component drives the spindle direction support member in the spindle direction between a spindle direction support position in contact with the workpiece and a spindle direction retreat position away from the workpiece,

[0105] The spindle direction support mechanism is configured to be capable of changing a contact position between the spindle direction support member and the workpiece in a plane orthogonal to the spindle direction.

[0106] (Note 2)

[0107] The fixture device according to Supplement 1, wherein:

[0108] The main axis direction support mechanism includes a plurality of the main axis direction support members arranged at different positions in the orthogonal plane.

[0109] The plurality of main axis direction supporting members are divided so that at least one main axis direction supporting member is included in each drive unit driven by the main axis direction driving means.

[0110] The main axis direction driving means drives each main axis direction supporting member for each of the driving units.

[0111] (Note 3)

[0112] The jig device according to Appendix 1 or 2, wherein:

[0113] The holding mechanism includes a rotating mechanism for rotating the workpiece around a rotation axis that is orthogonal to the main axis direction.

[0114] (Note 4)

[0115] The jig device according to Appendix 1 or 2, wherein:

[0116] The holding mechanism includes a first rotating mechanism that rotates the workpiece around a first rotating axis that is orthogonal to the spindle direction, and a second rotating mechanism that rotates the workpiece around a second rotating axis that is orthogonal to the spindle direction and the first rotating axis.

[0117] (Note 5)

[0118] The jig device according to any one of Supplementary Notes 1 to 4, wherein:

[0119] The jig device further includes a second axial direction support mechanism, the second axial direction support mechanism having a second axial direction support member, when a first axial direction orthogonal to the main axial direction and a second axial direction orthogonal to the main axial direction and the first axial direction are specified, the second axial direction support member is opposite to the workpiece in the second axial direction,

[0120] The holding mechanism holds an end portion of the workpiece on one side in the first axis direction.

[0121] The second axial direction support mechanism includes a second axial direction drive member that drives the second axial direction support member in the second axial direction between a second axial direction support position in contact with the workpiece and a second axial direction retreat position away from the workpiece.

[0122] (Note 6)

[0123] The fixture device according to Supplementary Note 5, wherein:

[0124] The second-axis direction support mechanism is configured to be capable of changing the position of the second-axis direction support member in a parallel plane parallel to the main-axis direction and the first-axis direction.

[0125] (Note 7)

[0126] The jig device according to Appendix 5 or 6, wherein:

[0127] The second-axis direction supporting mechanism has at least two second-axis direction supporting members for sandwiching the workpiece from both sides in the second-axis direction.

[0128] (Note 8)

[0129] The jig device according to any one of Supplementary Notes 1 to 7, wherein:

[0130] The jig device further includes a restraining mechanism for restraining a portion of the workpiece in a manner that limits displacement of the workpiece in the spindle direction.

[0131] The restraint mechanism is disposed at a position sandwiching the main axis direction support mechanism between the restraint mechanism and the holding mechanism.

[0132] (Note 9)

[0133] A jig unit is a jig unit for a jig device for holding a workpiece in a cantilevered state in a machine tool, wherein:

[0134] The jig unit includes a spindle direction support mechanism, the spindle direction support mechanism includes at least one spindle direction support member and a spindle direction drive component, the spindle direction support member is arranged opposite to the workpiece from the side opposite to the spindle in the spindle direction of the machine tool with respect to the workpiece held in a cantilever state, and the spindle direction drive component drives the spindle direction support member in the spindle direction between a spindle direction support position in contact with the workpiece and a spindle direction retreat position away from the workpiece,

[0135] The spindle direction support mechanism is configured to be capable of changing a contact position between the spindle direction support member and the workpiece in a plane orthogonal to the spindle direction.

[0136] (Note 10)

[0137] A fixture device is a fixture device for a workpiece in a machine tool, wherein:

[0138] The fixture device has:

[0139] a holding mechanism that holds the workpiece in a cantilevered state; and

[0140] A second axial direction support mechanism, the second axial direction support mechanism having a second axial direction support member, when a first axial direction orthogonal to the main axial direction and a second axial direction orthogonal to the main axial direction and the first axial direction are defined, the second axial direction support member is opposite to the workpiece in the second axial direction,

[0141] The holding mechanism holds an end portion of the workpiece on one side in the first axis direction.

[0142] The second axial direction support mechanism includes a second axial direction drive member that drives the second axial direction support member in the second axial direction between a second axial direction support position in contact with the workpiece and a second axial direction retreat position away from the workpiece.

[0143] (Note 11)

[0144] The fixture device according to Supplementary Note 10, wherein:

[0145] The second-axis direction support mechanism is configured to be capable of changing the position of the second-axis direction support member in a parallel plane parallel to the main-axis direction and the first-axis direction.

[0146] (Note 12)

[0147] The jig device according to Supplementary Note 11, wherein:

[0148] The second-axis direction support mechanism includes a parallel rotation mechanism that rotates the second-axis direction support member about a parallel rotation axis parallel to the second-axis direction so as to be able to change the position of the second-axis direction support member in the parallel plane.

[0149] (Note 13)

[0150] The jig device according to Supplement 10 or 11, wherein:

[0151] The second-axis direction supporting mechanism has at least two second-axis direction supporting members for sandwiching the workpiece from both sides in the second-axis direction.

[0152] (Note 14)

[0153] The jig device according to any one of Supplementary Notes 10 to 13, wherein:

[0154] The holding mechanism includes a rotating mechanism for rotating the workpiece around a rotation axis that is orthogonal to the main axis direction.

[0155] (Note 15)

[0156] The jig device according to any one of Supplementary Notes 10 to 13, wherein:

[0157] The holding mechanism includes a first rotating mechanism that rotates the workpiece around a first rotating axis that is orthogonal to the spindle direction, and a second rotating mechanism that rotates the workpiece around a second rotating axis that is orthogonal to the spindle direction and the first rotating axis.

[0158] (Note 16)

[0159] A jig unit is a jig unit for a jig device for holding a workpiece in a cantilevered state in a machine tool, wherein:

[0160] The jig unit includes a second axis direction support mechanism, the second axis direction support mechanism having a second axis direction support member, when a first axis direction orthogonal to the main axis direction and a second axis direction orthogonal to the main axis direction and the first axis direction are specified, the second axis direction support member is opposite to the workpiece in the second axis direction,

[0161] The second axial direction support mechanism includes a second axial direction drive member that drives the second axial direction support member in the second axial direction between a second axial direction support position in contact with the workpiece and a second axial direction retreat position away from the workpiece.

[0162] This application claims priority from Japanese Patent Application No. 2022-140675 filed on September 5, 2022, Japanese Patent Application No. 2022-140666 filed on September 5, 2022, and Japanese Patent Application No. 2023-18112 filed on February 9, 2023, the entire contents of which are incorporated herein by reference.

[0163] Description of Reference Numerals

[0164] 100, fixture device; 110, holding mechanism; 112, rotation mechanism (first rotation mechanism); 120, main supporting mechanism (main axis direction supporting mechanism); 121, main supporting member (main axis direction supporting member); 125, main driving unit (main axis direction driving member); 130, auxiliary supporting mechanism (second axis direction supporting mechanism); 131, auxiliary supporting member (second axis direction supporting member); 135, auxiliary driving unit (second axis direction driving member); 136, parallel rotation mechanism; 140, hole clamping device (constraint mechanism); 200, spindle; 210, workbench; 300, fixture device; U, fixture unit; W, workpiece; W3, workpiece; X1, rotation axis (first rotation axis); Y2, rotation axis (second rotation axis); Y3, parallel rotation axis.

Claims

1. A fixture device, which is a fixture device for a workpiece in a machine tool, wherein: The fixture device has: A holding mechanism that holds the workpiece in a cantilevered state; as well as A spindle direction support mechanism, comprising at least one spindle direction support member and a spindle direction drive component, wherein the spindle direction support member is arranged opposite to the workpiece from the side opposite to the spindle in the spindle direction of the machine tool with respect to the workpiece held in a cantilever state on the holding mechanism, and wherein the spindle direction drive component drives the spindle direction support member in the spindle direction between a spindle direction support position in contact with the workpiece and a spindle direction retreat position away from the workpiece, The spindle direction support mechanism is configured to be capable of changing a contact position between the spindle direction support member and the workpiece in a plane orthogonal to the spindle direction.

2. The fixture device according to claim 1, wherein: The main axis direction support mechanism includes a plurality of the main axis direction support members arranged at different positions in the orthogonal plane. The plurality of main axis direction supporting members are divided so that at least one main axis direction supporting member is included in each drive unit driven by the main axis direction driving means. The main axis direction driving means drives each main axis direction supporting member for each of the driving units.

3. The fixture device according to claim 1 or 2, wherein: The holding mechanism includes a rotating mechanism for rotating the workpiece around a rotation axis that is orthogonal to the main axis direction.

4. The fixture device according to claim 1 or 2, wherein: The holding mechanism includes a first rotating mechanism that rotates the workpiece around a first rotating axis that is orthogonal to the spindle direction, and a second rotating mechanism that rotates the workpiece around a second rotating axis that is orthogonal to the spindle direction and the first rotating axis.

5. The fixture device according to claim 1 or 2, wherein: The jig device further includes a second axial direction support mechanism, the second axial direction support mechanism having a second axial direction support member, when a first axial direction orthogonal to the main axial direction and a second axial direction orthogonal to the main axial direction and the first axial direction are specified, the second axial direction support member is opposite to the workpiece in the second axial direction, The holding mechanism holds an end portion of the workpiece on one side in the first axis direction. The second axial direction support mechanism includes a second axial direction drive member that drives the second axial direction support member in the second axial direction between a second axial direction support position in contact with the workpiece and a second axial direction retreat position away from the workpiece.

6. The fixture device according to claim 5, wherein: The second-axis direction support mechanism is configured to be capable of changing the position of the second-axis direction support member in a parallel plane parallel to the main-axis direction and the first-axis direction.

7. The fixture device according to claim 5, wherein: The second-axis direction supporting mechanism has at least two second-axis direction supporting members for sandwiching the workpiece from both sides in the second-axis direction.

8. The fixture device according to claim 1 or 2, wherein: The jig device further includes a restraint mechanism that restrains a portion of the workpiece so as to restrict displacement of the workpiece in the spindle direction, the restraint mechanism being disposed at a position sandwiching the spindle direction support mechanism with the holding mechanism.

9. A jig unit for a jig device for holding a workpiece in a cantilevered state in a machine tool, wherein: The jig unit includes a spindle direction support mechanism, the spindle direction support mechanism includes at least one spindle direction support member and a spindle direction drive component, the spindle direction support member is arranged opposite to the workpiece from the side opposite to the spindle in the spindle direction of the machine tool with respect to the workpiece held in a cantilever state, and the spindle direction drive component drives the spindle direction support member in the spindle direction between a spindle direction support position in contact with the workpiece and a spindle direction retreat position away from the workpiece, The spindle direction support mechanism is configured to be capable of changing a contact position between the spindle direction support member and the workpiece in a plane orthogonal to the spindle direction.

Images