Machine tool

Abstract

To provide a machine tool which can reduce the size of a device by optimizing arrangement of a cover protrusion part of a device cover and a workpiece table.SOLUTION: A machine tool comprises: a workpiece holding device which holds a workpiece; a processing device which executes processing to the workpiece held by the workpiece holding device; a loader which executes delivery of the workpiece between the workpiece holding device and itself; a device cover which stores the workpiece holding device and the processing device; and a workpiece table on which the workpiece held by the loader can be placed. The device cover includes a cover protrusion part which protrudes to the outer side from the device cover and stores at least a portion of the workpiece holding device. The workpiece table comprises: a slide member which has a placement part on which the workpiece is placed; a table body part which holds the slide member in a slidable manner; and a frame member which holds the table body part with respect to an installation surface on which the machine tool is installed, and holds the table body part on the upper side of the cover protrusion part.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present application relates to a technology related to a work table for placing a work on a machine tool.

Background Art

[0002] Patent Document 1 below describes a processing machine line including a plurality of modules arranged in one direction. The processing machine line of Patent Document 1 includes a work table module as one of the plurality of modules. The work table module has a temporary placement table for the transfer and quality check of the work and an inappropriate work table for storing inappropriate works determined to be inappropriate in the inspection process. Further, the work table module is configured such that the work can be taken out by an operator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, from the viewpoint of shortening the transfer time of the work, the work table as described above is preferably arranged closer to the processing device for processing the work. On the other hand, in a machine tool, for example, when the overall length of the device housed in the device cover becomes long due to differences in structure or the like, it is necessary to provide a cover protruding portion protruding outward on a part of the device cover for housing. For this reason, depending on the arrangement of the cover protruding portion and the work table, there is a risk that the device may become large-sized.

[0005] The present application has been made in view of the above problems, and an object thereof is to provide a machine tool capable of optimizing the arrangement of the cover protruding portion of the device cover and the work table to reduce the size of the device.

Means for Solving the Problems

[0006] In order to solve the above problems, this specification discloses a machine tool including a work holding device for holding a work, a processing device for performing processing on the work held by the work holding device, a loader for transferring the work between the work holding device, a device cover in which the work holding device and the processing device are housed, and a work table on which the work gripped by the loader can be placed. The device cover has a cover protruding portion that protrudes outward from the device cover and houses at least a part of the work holding device. The work table includes a slide member having a placement portion on which the work is placed, a table main body portion that slidably holds the slide member, and a frame member that holds the table main body portion with respect to the installation surface on which the machine tool is installed and holds the table main body portion above the cover protruding portion.

Effects of the Invention

[0007] According to the machine tool of the present disclosure, the table main body portion is held by the frame member above the cover protruding portion protruding from the device cover. Therefore, while avoiding interference between the table main body portion and the cover protruding portion, the work table can be brought closer to the work holding device, the processing device, etc. Thereby, the transfer time for transferring the work from the processing device to the work table by the loader can be shortened. Also, by arranging the devices close to each other, it becomes possible to reduce the size of the entire device.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0009] Hereinafter, an embodiment in which the machine tool of the present application is embodied will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the machine tool 10 of the present embodiment includes a main body device 11, a loader 13, an inlet device 15, an outlet device 17, and a workbench (hereinafter referred to as "table") 18. Note that FIG. 2 omits the illustration of the loader 13. Also, FIGS. 1 and 2 transparently illustrate a part of the devices and equipment (such as the rail base 25 and the frame member 62) provided in each device. The same applies to the drawings after FIG. 3. Further, in the following description, as shown in FIGS. 1 and 2, with reference to the direction of viewing the machine tool 10 from the front, the direction horizontal to the installation surface 19 of the device in the machine width direction is the left-right direction, the direction parallel to the installation surface 19 of the device and perpendicular to the left-right direction is the front-rear direction, and the direction perpendicular to the left-right direction and the front-rear direction is the up-down direction.

[0010] (Regarding the overall configuration of the machine tool 10) The machine tool 10 is arranged in the left - right direction in the order of the outlet device 17, the table 18, the main body device 11, and the inlet device 15 from left to right. The main body device 11 is arranged at the center of the machine tool 10 in the left - right direction. The main body device 11 has, for example, a device cover 21 in a substantially rectangular parallelepiped shape. On the front surface of the device cover 21, a slide door 22 and an operation unit 23 are provided. Behind the slide door 22, a processing space for a processing device 55 (see FIG. 3) described later is provided. The user can access the processing space by opening the slide door 22, and can check the workpiece W, replace the tool 55B (see FIG. 3), etc. The operation unit 23 includes, for example, a touch panel, switches, etc., and performs display of information related to the machine tool 10 and reception of operation instructions.

[0011] The loader 13 executes the transfer of the workpiece W between the inlet device 15, the spindle device 51 (see FIG. 3) of the main body device 11, and the outlet device 17. The loader 13 is, for example, a gantry - type workpiece transfer device, and moves the movable part 27 in the left - right direction along a rail base 25 provided on the upper part of the main body device 11. For example, the loader 13 engages a pinion fixed to the output shaft of a traveling motor (not shown) built in the movable part 27 with the tooth part of a traveling rack (not shown) provided on the rail base 25 to slide - move the movable part 27. Also, the loader 13 is provided with a lifting device (such as a motor and a rack mechanism) for moving the movable part 27 in the up - down direction, and the movable part 27 can be moved in the up - down direction. The above - mentioned traveling motor, the traveling rack of the rail base 25, the lifting device, etc. are an example of the moving mechanism of the present application. At the lower end of the movable part 27, a pair of chuck mechanisms 29 (see FIG. 5) are attached. Each of the pair of chuck mechanisms 29 includes claws for clamping the workpiece W and executes the transfer of the workpiece W with other devices.

[0012] The inlet device 15 is provided with a transfer device 31 that grips the workpiece W and moves it in the left - right direction. The transfer device 31 can receive the workpiece W from, for example, the user or a device in the previous process (not shown) at a receiving position provided behind the door 33. The transfer device 31 It moves leftward from the receiving position and transfers the workpiece W to the chuck mechanism 29 of the loader 13 at the transfer position at the left end. A right fence 35 is attached to the transfer position where the workpiece W is transferred from the inlet device 15 to the chuck mechanism 29 of the loader 13. The right fence 35 is a device cover that covers the front surface of the machine tool 10, is fixed to the right end portion of the front surface of the device cover 21, and covers a part of the inlet device 15. The right fence 35 is provided with a door 37 that can access the transfer position, enabling the transfer state of the workpiece W between the loader 13 and the inlet device 15 to be confirmed.

[0013] The outlet device 17 includes a receiving device 41 that grips and moves the workpiece W. In the following description of the outlet device 17, the same content as that of the above-described inlet device 15 will be omitted as appropriate. The receiving device 41 transfers the workpiece W to a device (not shown) in a subsequent process, etc. at the transfer position behind the door 43. The receiving device 41 receives the workpiece W from the chuck mechanism 29 of the loader 13 at the receiving position where the front surface is covered by the left fence 45. The left fence 45 is a device cover that covers the front surface of the machine tool 10, is fixed to the left end portion of the front surface of the device cover 21, and covers a part of the outlet device 17. The left fence 45 is provided with a door 47 that can access the receiving position.

[0014] Also, the left fence 45 is longer in the left-right direction than the right fence 35. A mounting table 18 is arranged between the door 47 and the main body device 11 in the left-right direction. The mounting table 18 is covered by the left fence 45 with a part of a device such as a frame member 62 (described later) arranged on the front side and is not visible from the front. In FIG. 1, the frame member 62 is shown transparently. Also, the mounting table 18 exposes the front cover 83 of the slide member 63 (see FIG. 7) from the opening 45A provided in the left fence 45, enabling the slide member 63 to be pulled out downward toward the front side. Details of the mounting table 18 will be described later. Also, as shown in FIG. 2, a lubrication device 16 that supplies coolant, etc. is arranged behind the main body device 11.

[0015] (Regarding the main body device 11) FIG. 3 shows a part of the front of the main body device 11. Note that FIG. 3 transparently shows the main shaft device 51 and the like disposed behind the device cover 21. As shown in FIG. 3, the main body device 11 includes a main shaft device 51, a center pushing device 53, and a processing device 55. The main shaft device 51 is disposed in a processing space with the slide door 22 opened, and is a work holding device that holds the work W and rotates the work W about an axis along the left-right direction. The work W in the present embodiment is, for example, a cylindrical member long in one direction (see FIG. 8), and in a state of being held at the processing position (the position shown in FIG. 3) of the main shaft device 51, the axial direction is along the axis of the main shaft device 51. The work W has, for example, an opening on the right side in FIG. 3, and a recess 77 (see FIG. 8) having a predetermined depth is formed in the axial direction from the opening. The main shaft device 51 is provided with a recess 51A formed along the longitudinal direction of the work W.

[0016] The center pushing device 53 is a device that pushes the work W carried into the processing space by the loader 13 (see FIG. 1) into the main shaft device 51. The center pushing device 53 is inserted into the recess 77 (see FIG. 8) of the work W, pushes the work W from the right side to the left side, pushes the work W into the recess 51A of the main shaft device 51, and arranges the work W at the processing position.

[0017] The processing device 55 performs processing on the work W by a tool 55B attached to a tool rest 55A. The processing device 55 has the position of the tool rest 55A changed by a driving device (not shown) and the position of the tool 55B with respect to the work W changed. The processing device 55 performs, for example, groove cutting on the outer peripheral surface of the base end portion (the center pushing device 53 side) of the work W by the tool 55B.

[0018] Further, the spindle device 51 is provided with an extrusion device 51B on the left side of the device. The extrusion device 51B is a device that extrudes the work W from the concave portion 51A when taking out the work W from the spindle device 51. The extrusion device 51B inserts an extrusion member into a concave portion 78 (see FIG. 8) formed at the tip of the work W, and extrudes the work W in the right direction (the direction away from the spindle device 51). The loader 13 receives the work W extruded to the right by the extrusion device 51B and conveys it to the outlet device 17 and the mounting table 18.

[0019] Further, a cover protrusion 21A is provided on the left side surface 21B of the device cover 21. The cover protrusion 21A has a box shape protruding leftward from the left side surface 21B, that is, outward in the device width direction. A part of the extrusion device 51B is housed in the cover protrusion 21A. Therefore, a part of the spindle device 51 that holds the work W is housed in the cover protrusion 21A of the present embodiment.

[0020] Here, when handling a long work W as in the present embodiment, for a device housed in the device cover 21 such as the spindle device 51, the overall length of the device may become long. In addition to the case where the extrusion device 51B is arranged on the spindle device 51 as in the present embodiment, for example, when arranging ports of an inducer that supplies coolant along the axis of the spindle device 51, or when arranging chucks that hold the work W along the axis, there are various factors that may increase the overall length of the device. In such a case, if the entire long device is to be housed in the device cover 21 without providing the cover protrusion 21A, there is a risk of increasing the size of the device cover 21, that is, increasing the size of the main body device 11. Therefore, by providing the cover protrusion 21A that protrudes only a part of the long device, for example, the part that houses the extrusion device 51B, an increase in the size of the device cover 21 can be suppressed. And the machine tool 10 of the present embodiment further miniaturizes the entire machine tool 10 by optimizing the arrangement of the cover protrusion 21A and the mounting table 18.

[0021] (Regarding the mounting table 18) Next, the mounting table 18 will be described. As shown in FIGS. 4 to 6, the mounting table 18 has a table main body portion 61, a frame member 62, and a slide member 63. Note that FIGS. 5 and FIG. 7 described later illustrate both the slide member 63 pushed into the storage position P1 stored in the table main body portion 61 described later and the slide member 63 pulled out to the take-out position P2 where the workpiece W can be taken out. The storage position P1 is, for example, a position where the slide position is held by a first locking member 93 described later and the front cover 83 of the slide member 63 closes the opening 45A of the left fence 45. The take-out position P2 is, for example, a position where the position is held by a second locking member 94 and the rear cover 75C of the mounting portion 75 closes the opening 45A.

[0022] The table main body portion 61 is, for example, a substantially plate-shaped member in the shape of a rectangle that is thin in the vertical direction, has a predetermined width in the left-right direction, and is long in the front-rear direction. The frame member 62 has, for example, four column members 65 and a biasing mechanism 67. Each of the four column members 65 is a plate-shaped metal member that has a predetermined width in the left-right direction and is long in the vertical direction, and is connected to each other by a horizontal plate 66 (see FIG. 4) or the like. The lower ends of the four column members 65 are fixed to the installation surface 19 by anchors 69.

[0023] Of the four column members 65, two column members 65 are arranged in front of the cover projection 21A, and the remaining two column members 65 are arranged behind the cover projection 21A. The two column members 65 arranged on each of the front side and the rear side are arranged with a predetermined gap in the left-right direction. Further, the right column member 65 among the two column members 65 on the rear side is fixed to a support column (not shown) of the loader 13 by a bracket 64 (see FIGS. 4 and 5). The bracket 64 has, for example, two L-shaped metal members and is fixed to each of the column member 65 and the support column By fixing the following L-shaped metal members to each other, the table 18 is fixed to the column of the loader 13. The table body portion 61 is fixed to the upper ends of the four column members 65 and is disposed above the cover protruding portion 21A. The table body portion 61 is held by the column members 65 in a state of being inclined downward as it goes from the rear (the back surface of the machine tool 10) toward the front, and is inclined in the inclined direction 71 (see FIG. 5). Therefore, the frame member 62 holds the table body portion 61 with respect to the installation surface 19 of the machine tool 10 and holds the table body portion 61 above the cover protruding portion 21A. Incidentally, a work sensor 59 for detecting the entry and exit of the work W to and from the table 18 is provided on the side of the table body portion 61 (see FIG. 4). Further, in the following description, the upper side (the left side in FIG. 5) in the inclined direction 71 will be referred to as the base end side, and the lower side (the right side in FIG. 5) will be referred to as the tip end side.

[0024] As shown in FIG. 6, a slide mechanism 73 for slidably holding the slide member 63 is provided on the upper surface of the table body portion 61. The slide mechanism 73 is, for example, a slide device using a bearing, and has a rail 73A and a table 73B that is slidable with respect to the rail 73A. The table 73B is slid in the inclined direction 71 by a bearing (such as a ball bearing) provided on the table 73B.

[0025] As shown in FIGS. 6 and 7, the table 73B is attached to the lower surface of the rear end of the slide member 63 and is disposed on the proximal end side of the table main body portion 61 in a state where the slide member 63 is disposed at the storage position P1. Further, two rotating members 70 are provided on the distal end side of the table main body portion 61. The two rotating members 70 are provided at both end portions of the table main body portion 61 in the left-right direction and are rotatable with the slide member 63 placed thereon. The slide member 63 is supported by the table 73B at the proximal end side and is supported by the rotating member 70 at the distal end portion side, and slides in the inclined direction 71. Thereby, the slide member 63 can be pulled out from the table main body portion 61 toward the distal end side in the inclined direction 71. Then, while arranging the table main body portion 61 above the cover protruding portion 21A and arranging the left side surface 21B of the device cover 21 and the table 18 in a close position, the extraction position P2 where the slide member 63 (workpiece W) is pulled out can be made lower than the storage position P1. That is, the height of the workpiece W from the installation surface 19 at the extraction position P2 can be made lower. For this reason, while reducing the size of the machine tool 10 by bringing the position of the table 18 closer to the left side surface 21B, the convenience of the user for taking in and out the workpiece W can be improved. Note that the table main body portion 61 and the slide member 63 may have a non-inclined configuration. For example, the frame member 62 may hold the table main body portion 61 and the slide member 63 above the cover protruding portion 21A in a state horizontal with respect to the installation surface 19.

[0026] As shown in FIG. 5, a notch portion 21C is formed at the upper portion of the cover protruding portion 21A in accordance with the positions and shapes of the pedestal main body portion 61 and the slide member 63 inclined in the inclination direction 71. The pedestal main body portion 61 is, for example, at substantially the same height as the upper surface of the cover protruding portion 21A at substantially the center of the cover protruding portion 21A in the front-rear direction, and is in contact with the cover protruding portion 21A or slightly separated from the cover protruding portion 21A. The notch portion 21C is an inclined surface formed from the center to the front end of the cover protruding portion 21A in the front-rear direction. The notch portion 21C is inclined downward at an angle larger than the inclination angle of the pedestal main body portion 61, and the distance between the pedestal main body portion 61 in the vertical direction increases as it goes forward from the center of the cover protruding portion 21A in the front-rear direction. In other words, the frame member 62 holds the pedestal main body portion 61 in a state of being separated from the upper surface of the cover protruding portion 21A and the notch portion 21C except for the central portion of the cover protruding portion 21A in the front-rear direction. In such a configuration, when the pedestal 18 is arranged after the main body device 11 is arranged, after installing the frame member 62, when placing and fixing the pedestal main body portion 61 on the installed frame member 62, the pedestal main body portion 61 can be attached while suppressing interference between the pedestal main body portion 61 and the cover protruding portion 21A. The same applies to the removal operation of the pedestal main body portion 61. Therefore, the work load of the attachment / detachment operation of the pedestal 18 can be reduced.

[0027] As shown in FIGS. 6 and 7, the slide member 63 is provided with a mounting portion 75 on which the workpiece W can be placed. The mounting portion 75 is attached to the upper surface of the proximal end side (left side in FIG. 5) of the slide member 63 in the inclination direction 71. FIG. 8 shows a state in which the mounting portion 75 on which the workpiece W is placed is arranged at the position of a plate 81 described later and viewed from the front. As shown in FIG. 8, the mounting portion 75 has a bottom plate 75A and three support members 75B. The bottom plate 75A is a plate-shaped metal member and is fixed to the upper surface of the slide member 63. On the upper surface of the bottom plate 75A, three support members 75B are arranged side by side in the left-right direction. The support member 75B is fixed by connecting a plurality of metal members, for example, and a groove (not shown) adapted to the outer peripheral shape of the workpiece W is formed at the upper end portion. The three support members 75B support the workpiece W inserted into this groove from above from below. The machine tool 10 can process workpieces W having different axial lengths, for example. The machine tool 10 may use only two (the two on the right side in FIG. 8) of the three support members 75B or all three support members 75B depending on the axial length of the workpiece W. Note that FIG. 7 omits the illustration of the bottom plate 75A and the support member 75B at the take-out position P2.

[0028] As shown in FIGS. 5 and 8, the bottom plate 75A of the mounting portion 75 is fixed in a horizontal state with respect to the slide member 63 inclined in the inclination direction 71. The mounting portion 75 holds the workpiece W supported by the support member 75B in a horizontal state (parallel to the front-rear direction and the left-right direction) before and after the slide member 63 is slid in the inclination direction 71. The workpiece W supported by the support member 75B is held, for example, in a state where the axial direction is along the left-right direction and slides. Thereby, even in a configuration in which the slide member 63 is inclined, it is possible to suppress the occurrence of dropping or rolling of the workpiece W during the pulling-out operation of the slide member 63. Note that the mounting portion 75 may hold the workpiece W in an inclined state in the inclination direction 71 or the axial direction of the workpiece W.

[0029] As shown in FIG. 6, a photoelectric sensor 79 and a proximity sensor 80 are provided on the mounting table main body 61. The photoelectric sensor 79 is configured such that the work W on the mounting portion 75 is disposed between the optical axes connecting the light projecting portion and the light receiving portion. Therefore, the machine tool 10 can detect the presence or absence of the work W on the mounting portion 75 based on the detection signal of the photoelectric sensor 79. Further, the proximity sensor 80 is, for example, an inductive proximity sensor, and is disposed at a position separated by a predetermined distance from the tip of the work W in the axial direction of the work W mounted on the mounting portion 75. The proximity sensor 80 outputs different detection signals when a long work W using three support members 75B is mounted on the mounting portion 75 and when a short work W using two support members 75B is mounted on the mounting portion 75, as the distance from the tip of the work W changes. Thereby, the machine tool 10 can determine the type of the work W mounted on the mounting portion 75 based on the detection signal of the proximity sensor 80.

[0030] Further, the mounting portion 75 has a rear cover 75C behind the support member 75B. The rear cover 75C has, for example, a rectangular plate shape that is long in the left-right direction, and has a shape adapted to the opening 45A (see FIG. 1) of the left fence 45. The rear cover 75C slides together with the slide member 63 and closes the opening 45A of the left fence 45 at the take-out position P2. Further, a front cover 83 is provided at the tip of the slide member 63 in the inclined direction 71. The front cover 83 has a shape adapted to the opening 45A of the left fence 45, similar to the rear cover 75C. The front cover 83 slides together with the slide member 63 and closes the opening 45A at the storage position P1.

[0031] A handle 85 is attached to the front surface of the front cover 83. The user can pull out the slide member 63 by grasping this handle 85 and pulling it in the inclined direction 71. A regulating member 83A (see FIG. 5) is provided behind the front cover 83. The regulating member 83A has a U-shaped frame shape having an opening on the lower side when the front cover 83 is viewed from the front, and is formed from the rear surface of the front cover 83 to a position close to the mounting portion 75 in the inclined direction 71. It is. In the operation of pulling out the slide member 63, until the placement portion 75 is pulled out to the outside of the opening 45A (see FIG. 1), the opening 45A is in a closed state by the regulating member 83A being pulled out. Thereby, when pulling out the workpiece W (placement portion 75) to the outside of the opening 45A, it is possible to prevent the user from accidentally putting a hand or the like into the opening 45A.

[0032] Further, an electromagnetic lock 87 (see FIG. 4) and a latch 89 (see FIG. 6) are provided on the table main body portion 61. The electromagnetic lock 87 engages with the slide member 63 in, for example, the initial state when the power of the machine tool 10 is turned on to keep the slide member 63 in a closed state, and is unlocked based on the control of the control unit of the machine tool 10. The user can unlock the electromagnetic lock 87 by operating the operation unit 23. The latch 89 is attached to the front cover 83 so as to be slidable in the left-right direction, and moves between a closed position where it engages with the table main body portion 61 to restrict the sliding movement of the slide member 63 and an open position where it does not restrict.

[0033] For example, when the quality check button of the operation unit 23 is touched and operated, the machine tool 10 controls the loader 13 to move the workpiece W arranged in the spindle device 51 to the placement portion 75 of the table 18. When the operation of placing the workpiece W on the placement portion 75 is completed, the machine tool 10 unlocks the electromagnetic lock 87 and displays a message indicating that the placement is completed on the operation unit 23. The user can check the workpiece W on the placement portion 75, that is, the processing quality of the processed workpiece W, by unlocking the latch 89 and pulling out the slide member 63. In the present embodiment, by arranging the table 18 above the cover protruding portion 21A, there is a possibility that the takeout position of the workpiece W becomes high. On the contrary, as described above, by tilting the table 18 in the tilt direction 71, it is easier to take out the workpiece W from the pulled-out slide member 63.

[0034] Also, as shown in FIG. 8, the plate 81 is formed with a concave portion 81A that conforms to the shape of the convex portion 91 of the workpiece W. The plate 81 is attached above the front end (tip) side of the table main body portion 61 and is attached at a position where the workpiece W that rides on the slide member 63 and slides passes through. Thereby, for example, after the user pulls out the slide member 63 to perform quality inspection and then places the workpiece W on the mounting portion 75 with the axial direction of the workpiece W reversed and pushes in the slide member 63, the workpiece W and the plate 81 come into contact. It is possible to notify the user that the orientation of the workpiece W placed on the mounting portion 75 is incorrect. It is possible to suppress the occurrence of chucking errors of the workpiece W by the loader 13 and chucking in the wrong orientation. Incidentally, the table 18 does not necessarily need to include the electromagnetic lock 87, the latch 89, and the plate 81.

[0035] Also, as shown in FIGS. 6 and 7, a first locking member 93 and a second locking member 94 are attached to the table main body portion 61 and the slide member 63. As the first and second locking members 93 and 94, for example, a so-called ball catch, roller catch, rotary catch, etc. can be adopted. The first locking member 93 includes, for example, two female portions at the rear end of the table main body portion 61, and in a state where the slide member 63 is disposed at the storage position P1, the male portion provided on the slide member 63 is inserted into the female portion of the table main body portion 61 to hold the slide member 63 at the storage position P1. In this state, the front cover 83 is in a state of closing the opening 45A. Thereby, even if the electromagnetic lock 87 or the latch 89 is released due to a failure, vibration, etc., and a force is applied in the inclined direction 71 by the weight of the workpiece W or the like, the slide member 63 can be held at the storage position P1 by the first locking member 93. That is, while making it easy to take out the workpiece W by adopting a configuration in which the table 18 is inclined, it is possible to suppress the slide member 63 from being pulled out due to a failure of the electromagnetic lock 87 or the like.

[0036] Further, the second locking member 94 is provided with, for example, two female portions at the front end of the mounting base main body portion 61. In a state where the slide member 63 is disposed at the take-out position P2, the male portion provided on the slide member 63 is inserted into the female portion of the mounting base main body portion 61, and the slide member 63 is held at the take-out position P2. Also, a stopper 95 is provided at the front end of the mounting base main body portion 61 and at the center in the left-right direction. The stopper 95 is provided on the front side of the two female portions of the second locking member 94 and at a position between the two female portions in the left-right direction. As shown in FIGS. 6 and 7, the table 73B of the slide mechanism 73 slides together with the slide member 63. When the slide member 63 is slid to the position P2, the table 73B abuts against the stopper 95 and the forward movement is restricted. Thereby, even in a state where the workpiece W is placed on the placing portion 75 and the weight of the workpiece W is applied to the slide member 63, the slide member 63 can be stably held at the position P2 by the second locking member 94 and the stopper 95. In this state, the rear cover 75C is in a state of closing the opening 45A. Further, as will be described later, the slide member 63 of the present embodiment is biased toward the proximal end side by the biasing mechanism 67. For this reason, the second locking member 94 can suppress the slide member 63 disposed at the take-out position P2 from being moved toward the proximal end side by the biasing mechanism 67, that is, the slide member 63 from closing inadvertently.

[0037] In addition, an oil pan 97 for collecting the coolant that has dropped from the workpiece W is provided on the upper surface of the slide member 63. The oil pan 97 is provided, for example, on the front surface of the upper surface of the slide member 63, slides together with the slide member 63, and allows the coolant that has dropped from the workpiece W placed on the placing portion 75 to flow downward in the inclined direction 71. Further, the slide member 63 is provided with two valves 99 (see FIG. 7) for discharging the coolant collected by the oil pan 97. Each of the two valves 99 is attached to the lower end portion of the slide member 63 in the inclined direction 71 and is provided at both ends in the left-right direction at the end portion. Each of the two valves 99 can be switched between an open state and a closed state, for example, by turning a cock.

[0038] Here, for example, even if air or the like is blown onto the workpiece W conveyed from the spindle device 51, coolant may adhere to the workpiece W. Therefore, when the workpiece W is placed on the placement portion 75, the coolant adhering to the workpiece W may fall. In the mount 18 of the present embodiment, by inclining the slide member 63 or the like, the coolant that has fallen from the workpiece W can be caused to flow in the inclined direction 71 by the oil pan 97 and stored and collected on the downstream side. Then, by providing the valve 99 at the lower end of the inclined direction 71, the user can easily collect the coolant accumulated at the lower end of the inclined direction 71 from the valve 99.

[0039] Next, the biasing mechanism 67 will be described. The biasing mechanism 67 biases the slide member 63 toward the mount main body portion 61, which is the upper side in the inclined direction 71. More specifically, FIG. 9 is a rear view of the biasing mechanism 67 and shows the state of viewing the biasing mechanism 67 from the rear. As shown in FIGS. 5, 6, and 9, the biasing mechanism 67 includes a wire 101, a guide roller 103, and a weight 105.

[0040] The tip of the wire 101 is connected to the base end portion (rear end) of the slide member 63 (see FIGS. 5 and 6). The guide roller 103 is rotatably supported by a support member 107 provided at the rear end of the mount main body portion 61. The wire 101 is wound around the guide roller 103. The guide roller 103 rotates, for example, about a rotation axis along the left-right direction and rotates as the wire 101 moves.

[0041] The weight 105 is disposed at the base end portion of the wire 101 on the side opposite to the slide member 63 with the guide roller 103 interposed therebetween. The biasing mechanism 67 has, for example, a bracket 109 that houses two weights 105. The bracket 109 has, for example, a box shape capable of housing two weights 105, and the base end portion of the wire 101 is fixed thereto. Further, the biasing mechanism 67 has a slide mechanism 111 that slidably moves the bracket 109. The slide mechanism 111 is, for example, a slide device using a bearing, and a rail 111 A has a table 111B that is slidable with respect to a rail 111A, and the table 111B is slid along the rail 111A by bearings (such as ball bearings) provided on the table 111B.

[0042] The rail 111A is disposed, for example, between two column members 65 provided behind the cover protrusion 21A and is fixed to the column members 65 in a state along the vertical direction. The table 111B moves vertically along the rail 111A. The bracket 109 is fixed to the table 111B. The guide roller 103 is disposed above the rail 111A. In the vertical direction, a wire 101 drawn from the guide roller 103 toward the bracket 109 is stretched between the wire 101 and the bracket 109 along the vertical direction. Note that FIG. 9 illustrates the brackets 109 and the table 111B disposed at two different positions in the vertical direction on one drawing so that the sliding movement of the bracket 109 can be easily understood.

[0043] FIGS. 5 and 9 show the positions of the weight 105 and the bracket 109 in a state where the slide member 63 is disposed at the storage position P1. The bracket 109 is disposed at a position that is the lower end of the rail 111A in a state where the slide member 63 is disposed at the storage position P1. When the slide member 63 is pulled out from this state, the bracket 109 is pulled upward by the wire 101 as the slide member 63 moves in the inclination direction 71. Further, the biasing mechanism 67 applies an external force that always returns the slide member 63 to the proximal end side (the base body portion 61). According to this, the biasing mechanism 67 can suppress the slide member 63 from moving downward in the inclination direction 71 due to a failure of the electromagnetic lock 87, vibration, the weight of the workpiece W, or the like. Further, even in a state where a heavy workpiece W is placed on the inclined slide member 63, since the biasing mechanism 67 applies an external force to return the slide member 63 from the take-out position P2 to the storage position P1, the user can return the slide member 63 pulled out with a relatively small force into the base body portion 61.

[0044] In addition, the biasing mechanism 67 of the present embodiment applies an external force to the slide member 63 by connecting a weight 105 to the base end portion of a wire 101 wound around a guide roller 103 and connecting the slide member 63 to the tip end portion. In such a configuration, the gravitational force acting on the weight 105 can be utilized as a force for pulling back the slide member 63. By changing the number of weights 105 or the like, the magnitude of the force for pulling back the slide member 63 can be adjusted.

[0045] In addition, the loader 13 of the present embodiment includes a moving mechanism such as a rail base 25 that slides the chuck mechanism 29 in the apparatus width direction (left - right direction). Further, the cover protruding portion 21A protrudes in the left - right direction from the left side surface 21B of the apparatus cover 21. And the mounting table 18 holds the mounting table main body portion 61 above the cover protruding portion 21A by a frame member 62 so as to straddle the protruding cover protruding portion 21A. In such a configuration, as shown in FIG. 4, in the vertical direction, the mounting table 18 and the cover protruding portion 21A can be arranged so as to overlap, and in the left - right direction, the mounting table 18 and the left side surface 21B (main body apparatus 11) can be brought closer. If the mounting table 18 is arranged on the left side of the cover protruding portion 21A, it is necessary to further move the delivery position between the outlet device 17 (see FIG. 1) and the loader 13 to the left. As a result, the distance L1 (see FIG. 4) for protruding the rail base 25 from the left side surface 21B to the left becomes longer. On the contrary, as in the present embodiment, by arranging the mounting table main body portion 61 of the mounting table 18 above the cover protruding portion 21A and bringing the mounting table 18 closer to the main body apparatus 11, the distance L1 can be shortened. Consequently, the stroke of the loader 13 can be shortened and the line length of the production line of the workpiece W can be shortened.

[0046] In addition, as shown in FIG. 8, the workpiece W of the present embodiment has a substantially cylindrical shape that is long in one direction. As shown in FIG. 3, the spindle device 51 has a recess 51A formed along the longitudinal direction of the workpiece W, and rotates the workpiece W housed in the recess 51A. Further, the main body apparatus 11 includes an extrusion device 51B that extrudes the workpiece W housed in the recess 51A of the spindle device 51. This is the case. In a machine tool 10 that performs machining on such a long workpiece W, an ejecting device 51B or the like is required when taking out the workpiece W accommodated in the spindle device 51. By attaching the ejecting device 51B, the overall length of the spindle device 51 becomes longer, and it becomes necessary to provide a cover protruding portion 21A and accommodate at least a part of the ejecting device 51B in the cover protruding portion 21A. Therefore, in the machine tool 10 that performs machining on a long workpiece W, by adopting a configuration in which the table main body portion 61 is disposed above the above-described cover protruding portion 21A, it is possible to secure a layout space for the ejecting device 51B and reduce the size of the entire machine tool 10.

[0047] Incidentally, the spindle device 51 is an example of a workpiece holding device. The left-right direction is an example of the device width direction. The rail base 25 is an example of a moving mechanism.

[0048] As described above, the above-described embodiment has the following effects. The device cover 21 of the machine tool 10, which is one aspect of the present application, protrudes leftward from the left side surface 21B and has a cover protruding portion 21A that houses the ejecting device 51B. The frame member 62 of the table 18 holds the table main body portion 61 with respect to the installation surface 19 and holds the table main body portion 61 above the cover protruding portion 21A. In such a configuration, the table main body portion 61 on which the workpiece W is placed can be disposed above the cover protruding portion 21A, and the distance between the table 18 and the left side surface 21B can be shortened. The table 18 can be brought closer to the spindle device 51, the machining device 55, etc. while avoiding interference between the table main body portion 61 and the cover protruding portion 21A. Thereby, the conveyance time for conveying the workpiece W from the machining device 55 to the table 18 by the loader 13 can be shortened. Also, by arranging the respective devices close to each other, it becomes possible to reduce the size of the entire device.

[0049] Further, the present application is not limited to the above-described embodiment, and can be implemented in various aspects with various changes and improvements based on the knowledge of those skilled in the art. For example, the device housed in the cover protrusion 21A is not limited to the extrusion device 51B, and may be an inducer provided in the main spindle device 51, a port for the inducer, a claw for clamping the workpiece W, or a member combining them. Further, all of the extrusion device 51B may be housed in the cover protrusion 21A, or only a part thereof may be housed. In the above embodiment, the main spindle device 51 includes the recess 51A for housing the workpiece W, but it may not be provided. Further, the workpiece holding device of the present application may be configured to chuck the workpiece W only with the sub-claws without using the recess 51A, or may be a collet chuck that does not use the sub-claws.

[0050] In the above embodiment, the mounting table 18 is configured to incline downward as it goes from the rear to the front, but the inclination direction is not limited to this direction. For example, as shown in FIG. 10, the mounting table 131 may be configured to incline in the left-right direction (device width direction). The inclination direction 71 of the mounting table 131 shown in FIG. 10 is, for example, a direction from the upper right to the lower left. Even with such a configuration, the base end portion (right end portion) of the mounting table main body portion 61 and the left side surface 21B can be brought closer to each other, and the size of the machine tool 10 can be reduced. Alternatively, the mounting table main body portion 61 and the slide member 63 may be configured to incline in a direction going upward as it goes from the base end side to the tip side of the inclination direction 71 (for example, in the direction from the lower left to the upper right in FIG. 5). That is, the slide member 63 may be configured to be pulled out upward.

[0051] Further, the mounting table 18 may not include the biasing mechanism 67. The configuration of the biasing mechanism 67 in the above embodiment is an example. For example, the weight 105 may be directly fixed to the base end portion of the wire 101 without using the bracket 109. Further, the biasing mechanism 67 may not include the slide mechanism 111. Further, as the biasing mechanism, a spring that biases the slide member 63 by an elastic force may be employed. The mounting table 18 may not include at least one of the first and second lock members 93 and 94. The cover protrusion 21A may not include the notch portion 21C. The position where the valve 99 is provided is not limited to the lower end of the slide member 63, and other positions such as near the mounting portion 75 may be used. Also, the valve 99 and the oil pan 97 may be provided on the table main body portion 61. The shape of the workpiece W shown in FIG. 8 is an example, and the shape of the workpiece of the present application may be other shapes such as a thin annular shape. As a machine tool including the table of the present disclosure, a lathe including a spindle device 51 was adopted. However, the type of the machine tool including the table is not particularly limited. The machine tool of the present disclosure may be a milling machine, a boring machine, a milling cell, a turning center, a machining center, or the like.

Description of Reference Numerals

[0052] 10 Machine tool, 13 Loader, 18 Work table, 19 Installation surface, 21 Device cover, 21A Cover protrusion, 21C Notch, 25 Rail base (moving mechanism), 29 Chuck mechanism, 51 Spindle device (work holding device), 55 Processing device, 61 Table main body portion, 62 Frame member, 63 Slide member, 67 Biasing mechanism, 71 Inclination direction, 75 Mounting portion, 93 First locking member, 94 Second locking member, 97 Oil pan, 99 Valve, 101 Wire, 103 Guide roller, 105 Weight, W Workpiece, P1 Storage position, P2 Take-out position.

Claims

1. A work holding device for holding a work, A processing device for performing processing on the work held by the work holding device, A loader for transferring the work between the work holding device, A device cover in which the work holding device and the processing device are housed, A work table on which the work gripped by the loader can be placed, A machine tool comprising: The device cover, Has a cover protruding portion that protrudes outward from the device cover and houses at least a part of the work holding device, The work table, A slide member having a placement portion on which the work is placed, A table main body portion that slidably holds the slide member, A frame member that holds the table main body portion with respect to the installation surface on which the machine tool is installed and holds the table main body portion above the cover protruding portion, A machine tool having.

2. The loader, A chuck mechanism for gripping the work, A moving mechanism for sliding the chuck mechanism in the device width direction of the machine tool, Having, The cover protruding portion, The machine tool according to claim 1, which protrudes outward in the device width direction from the device cover.

3. The table main body portion, Is held by the frame member in an inclined state, The slide member, Is held by the table main body portion so as to be pullable downward in the inclined direction of the table main body portion, The frame member, The machine tool according to claim 1 or claim 2, having a biasing mechanism for biasing the slide member toward the table main body portion side, which is the upper side in the inclined direction.

4. The biasing mechanism, A wire having a tip connected to the slide member, A guide roller that is rotatably held with respect to the table main body portion and around which the wire is wound, A weight connected to the base end portion of the wire on the side opposite to the slide member with the guide roller interposed therebetween, The machine tool according to claim 3, having.

5. The placement portion of the slide member, The machine tool according to claim 3 or claim 4, which holds the work in a horizontal state before and after sliding the slide member in the inclined direction.

6. The table main body portion, A first locking member that holds the slide member pushed into a storage position housed in the table main body portion at the storage position, A second locking member that holds the slide member pulled out to the take-out position where the workpiece can be taken out; The machine tool according to any one of claims 3 to 5, having the same.

7. The cover protrusion is The machine tool according to any one of claims 3 to 6, having a notch portion cut out at the upper part in accordance with the position of the table main body portion inclined in the inclined direction.

8. The slide member is An oil pan provided below the placement portion and flowing the coolant that has fallen from the workpiece placed on the placement portion downward in the inclined direction; A valve for discharging the coolant; having The valve is The machine tool according to any one of claims 3 to 7, attached to the lower end portion on the lower side of the slide member in the inclined direction.

9. The workpiece is It has a long shape in one direction, The workpiece holding device is A spindle device having a recess formed along the longitudinal direction of the workpiece and rotating the workpiece housed in the recess; An extrusion device that extrudes the workpiece housed in the recess of the spindle device from the recess; having The cover protrusion is The machine tool according to any one of claims 1 to 8, in which at least a part of the extrusion device is housed.

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