JP2023055352A - Machine Tools - Google Patents

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 The present application relates to a technique related to a work stand on which a work is placed in a machine tool.

Patent Literature 1 listed below describes a processing machine line having a plurality of modules arranged in one direction. The processing machine line of Patent Literature 1 includes a workpiece table module as one of a plurality of modules. The workpiece table module has a temporary table for receiving and checking the quality of workpieces, and an inappropriate workpiece table for storing inappropriate workpieces determined to be inappropriate in the inspection process. Moreover, the work table module is configured so that the work can be taken out by the operator.

International Publication No. WO2017/064813

By the way, it is preferable that the work table as described above is arranged at a position closer to the processing device for processing the work from the viewpoint of shortening the time for transporting the work. On the other hand, in the machine tool, for example, when the total length of the device housed in the device cover is long due to a difference in structure, etc., it becomes necessary to provide a cover projecting portion that protrudes outward from a part of the device cover. . For this reason, there is a possibility that the size of the apparatus may increase depending on the arrangement of the cover protrusion and the work table.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a machine tool capable of miniaturizing the apparatus by optimizing the arrangement of the cover protrusion of the apparatus cover and the workpiece table.

In order to solve the above-mentioned problems, the present specification provides a work holding device that holds a work, a processing device that performs machining on the work held by the work holding device, and a work holding device between the work holding device and the work holding device. A machine tool comprising: a loader for transferring a work; a device cover housing the work holding device and the processing device; and a work stand on which the work gripped by the loader can be placed, The device cover protrudes outward from the device cover and has a cover projecting portion in which at least part of the work holding device is accommodated, and the work table is 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 table main body portion that holds the table main body portion against an installation surface on which the machine tool is installed and that holds the table main body portion above the cover projecting portion. A machine tool is disclosed having a frame member.

According to the machine tool of the present disclosure, the frame member holds the pedestal main body above the cover protrusion protruding from the device cover. Therefore, it is possible to bring the work stand closer to the work holding device, the processing device, etc. while avoiding interference between the stand main body and the cover projecting portion. As a result, the transport time for transporting 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 is possible to reduce the size of the entire device.

It is a front view of the machine tool of this embodiment. It is a top view of the machine tool of this embodiment. It is the figure which looked at a part of main unit from the front. It is a front view of the attachment part of a work stand. It is a side view of the attachment part of the work table seen from the left. It is the perspective view which looked at the workpiece|work stand from the upper back side. It is a top view of a stand main body part and a slide member. It is the figure which looked at the plate and the mounting part from the front. FIG. 4 is a rear view of the biasing mechanism; It is a figure which shows the workpiece stand of another example.

An embodiment embodying the machine tool of the present application will be described in detail below with reference to the drawings. As shown in FIGS. 1 and 2, a machine tool 10 of the present embodiment includes a main unit 11, a loader 13, an inlet device 15, an outlet device 17, and a work table (hereinafter referred to as "table") 18. I have. 2, illustration of the loader 13 is omitted. Also, FIGS. 1 and 2 transparently illustrate a part of devices and devices (rail base 25, frame member 62, etc.) 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 the direction of the machine tool 10 viewed from the front as a reference, the machine width direction and the direction horizontal to the installation surface 19 of the device is the left and right direction. The direction parallel to the installation surface 19 and perpendicular to the left-right direction is referred to as the front-rear direction, and the direction perpendicular to the left-right direction and the front-rear direction is referred to as the up-down direction.

(Overall Configuration of Machine Tool 10)
The machine tool 10 has an exit device 17, a table 18, a main unit 11, and an entrance device 15 arranged in this order from the left in the left-right direction. The main unit 11 is arranged in the center of the machine tool 10 in the left-right direction. The main unit 11 has, for example, a substantially rectangular parallelepiped device cover 21 . A slide door 22 and an operation section 23 are provided on the front surface of the device cover 21 . A processing space for a processing device 55 (see FIG. 3), which will be described later, is provided behind the slide door 22 . The user can access the machining space by opening the slide door 22, and can check the workpiece W and replace the tool 55B (see FIG. 3). The operation unit 23 includes, for example, a touch panel and switches, and displays information about the machine tool 10 and receives operation instructions.

The loader 13 transfers 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 work transfer device, and moves a movable portion 27 in the horizontal direction along a rail stand 25 provided on the upper portion of the main device 11 . For example, the loader 13 engages a pinion fixed to the output shaft of a running motor (not shown) built in the movable portion 27 with the teeth of a running rack (not shown) provided on the rail base 25. Thus, the movable portion 27 is slid. In addition, the loader 13 is provided with an elevating device (motor, rack mechanism, etc.) for moving the movable portion 27 in the vertical direction, so that the movable portion 27 can be moved in the vertical direction. The traveling motor, the traveling rack of the rail base 25, the lifting device, and the like described above are examples of the moving mechanism of the present application. A pair of chuck mechanisms 29 (see FIG. 5) are attached to the lower end of the movable portion 27 . Each of the pair of chuck mechanisms 29 has claws or the like for holding the work W, and transfers the work W to and from another device.

The entrance device 15 includes a transfer device 31 that grips the work W and moves it in the left-right direction. The delivery device 31 can receive a work W from, for example, a user or a device (not shown) in a previous process at a receiving position provided behind the door 33 . The delivery device 31 moves leftward from the receiving position and delivers the work W to the chuck mechanism 29 of the loader 13 at the leftmost delivery position. A right fence 35 is attached at a transfer position where the workpiece W is transferred from the entrance device 15 to the chuck mechanism 29 of the loader 13 . The right fence 35 is a device cover that covers the front of the machine tool 10 , is fixed to the right end of the front of the device cover 21 , and partially covers the entrance device 15 . The right fence 35 is provided with a door 37 that allows access to the transfer position, so that the transfer state of the work W between the loader 13 and the entrance device 15 can be checked.

The exit device 17 includes a receiving device 41 that grips and moves the work W. As shown in FIG. In the explanation of the outlet device 17 below, the explanation of the same content as that of the inlet device 15 will be omitted as appropriate. The receiving device 41 delivers the workpiece W to a post-process device (not shown) or the like at a delivery position behind the door 43 . The receiving device 41 receives the work W from the chuck mechanism 29 of the loader 13 at a receiving position where the front surface is covered with the left fence 45 . The left fence 45 is a device cover that covers the front of the machine tool 10 , is fixed to the front left end of the device cover 21 , and partially covers the exit device 17 . The left fence 45 is provided with a door 47 that allows access to the receiving position.

Also, the left fence 45 has a longer width in the left-right direction than the right fence 35 . A stand 18 is arranged between the door 47 and the main unit 11 in the horizontal direction. The pedestal 18 is hidden from view from the front by being covered by a left fence 45 in which a part of the device such as a frame member 62, which will be described later, is arranged on the front side. 1, the frame member 62 is transparently illustrated. In addition, the table 18 exposes a front cover 83 (see FIG. 7) of the slide member 63 through an opening 45A provided in the left fence 45, so that the slide member 63 can be pulled out forward and downward. there is The details of the mounting table 18 will be described later. Further, as shown in FIG. 2, a lubricating device 16 for supplying coolant and the like are arranged behind the main unit 11 .

(Regarding main unit 11)
FIG. 3 shows a part of the front of the main unit 11. As shown in FIG. 3 transparently illustrates the spindle device 51 and the like arranged behind the device cover 21. As shown in FIG. As shown in FIG. 3 , the main unit 11 includes a spindle device 51 , a tailstock device 53 and a processing device 55 . The main shaft device 51 is arranged in the processing space with the slide door 22 opened, and is a work holding device that holds the work W and rotates the work W around an axis extending in the left-right direction. The workpiece W of the present embodiment is, for example, a cylindrical member that is long in one direction (see FIG. 8), and when held at the machining position (position shown in FIG. 3) of the spindle device 51, the axial direction is the spindle. It is in a state along the axis of the 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 from the opening is formed in the axial direction. The spindle device 51 is provided with a concave portion 51A formed along the longitudinal direction of the work W. As shown in FIG.

The tail pushing device 53 is a device that pushes the work W carried into the machining space by the loader 13 (see FIG. 1) into the spindle device 51 . The tailstock device 53 is inserted into the recessed portion 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 recessed portion 51A of the spindle device 51, and places the work W at the machining position. do.

The machining device 55 carries out machining on the workpiece W using a tool 55B attached to the tool post 55A. In the processing device 55, the position of the tool post 55A is changed by a driving device (not shown), and the position of the tool 55B with respect to the work W is changed. The processing device 55, for example, performs grooving on the outer peripheral surface of the base end portion of the work W (on the side of the tailstock device 53) using a tool 55B.

Further, the spindle device 51 is provided with a pushing device 51B on the left side of the device. The push-out device 51B is a device that pushes out the work W from the recess 51A when the work W is taken out from the spindle device 51 . The push-out device 51B inserts a push-out member into a recess 78 (see FIG. 8) formed at the tip of the work W, and pushes out the work W to the right (the direction out of the spindle device 51). The loader 13 receives the work W pushed out to the right side by the pushing device 51B and conveys it to the exit device 17 and the mounting table 18 .

A left side surface 21B of the device cover 21 is provided with a cover projecting portion 21A. The cover projecting portion 21A has a box-like shape projecting leftward from the left side surface 21B, that is, outward in the device width direction. A part of the pushing device 51B is accommodated in the cover projecting portion 21A. Therefore, part of the spindle device 51 that holds the workpiece W is accommodated in the cover projecting portion 21A of the present embodiment.

Here, when a long workpiece W is handled as in the present embodiment, the total length of a device such as the spindle device 51 that is housed in the device cover 21 may become long. In addition to arranging the extrusion device 51B in the spindle device 51 as in the present embodiment, for example, when the ports of the inducer that supplies coolant are arranged along the axis of the spindle device 51, or when the chuck holding the work W is arranged The total length of the device may increase due to various factors such as arranging the devices along the axis. In such a case, if the entire device having a long overall length is to be accommodated in the device cover 21 without providing the cover protrusion 21A, the device cover 21 may be enlarged, that is, the main device 11 may be enlarged. There is Therefore, by providing a cover projecting portion 21A that protrudes only from a portion of the device having a long overall length, for example, a portion that accommodates the pushing device 51B, it is possible to suppress the device cover 21 from increasing in size. The machine tool 10 of the present embodiment optimizes the arrangement of the cover protrusion 21A and the mounting table 18, thereby further miniaturizing the machine tool 10 as a whole.

(Regarding the stand 18)
Next, the table 18 will be described. As shown in FIGS. 4 to 6, the table 18 has a table body 61, a frame member 62, and a slide member 63. As shown in FIGS. 5 and FIG. 7, which will be described later, both the slide member 63 pushed in to the storage position P1 stored in the table main body 61 described later and the slide member 63 pulled out to the take-out position P2 from which the workpiece W can be taken out are shown. is illustrated. The retracted position P1 is, for example, a position where the slide position is held by a first lock member 93 (to be described later) and the opening 45A of the left fence 45 is closed by the front cover 83 of the slide member 63 . The take-out position P2 is, for example, a position held by the second locking member 94 and the opening 45A is closed by the rear cover 75C of the placing section 75. As shown in FIG.

The table main body 61 is, for example, a substantially rectangular plate-shaped member that is thin in the vertical direction, has a predetermined width in the horizontal direction, and is long in the front-rear direction. The frame member 62 has, for example, four pillar members 65 and an urging mechanism 67 . Each of the four pillar members 65 is a plate-like metal member having a predetermined width in the horizontal direction and elongated 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 .

Of the four pillar members 65, two pillar members 65 are arranged in front of the cover protrusion 21A, and the remaining two pillar members 65 are arranged behind the cover protrusion 21A. The two pillar members 65 arranged on each of the front side and the rear side are arranged with a predetermined gap in the left-right direction. Also, the right column member 65 of the two rear column members 65 is fixed to a support (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 the column member 65 and the L-shaped metal members fixed to each of the columns are fixed to each other so that the table 18 can be attached to the column of the loader 13 . fixed. The stand body portion 61 is fixed to the upper ends of the four pillar members 65 and arranged above the cover projecting portion 21A. The table main body 61 is held by a column member 65 in a state of being inclined downward from the rear (back surface of the machine tool 10) toward the front, and is inclined in an inclination direction 71 (see FIG. 5). Therefore, the frame member 62 holds the table body portion 61 against the installation surface 19 of the machine tool 10 and holds the table body portion 61 above the cover projecting portion 21A. A work sensor 59 for detecting the entry and exit of the work W to and from the stand 18 is provided on the side of the stand main body 61 (see FIG. 4). Further, in the following description, the upper side (left side in FIG. 5) in the inclination direction 71 is referred to as the proximal side, and the lower side (right side in FIG. 5) is referred to as the distal side.

As shown in FIG. 6 , a slide mechanism 73 that slidably holds the slide member 63 is provided on the upper surface of the table main body 61 . The slide mechanism 73 is, for example, a slide device using bearings, and has a rail 73A and a table 73B that can slide relative to the rail 73A. is slid in the tilt direction 71 .

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 arranged on the base end side of the table main body 61 when the slide member 63 is arranged at the storage position P1. be. Further, two rotating members 70 are provided on the tip side of the table body portion 61 . The two rotating members 70 are provided at both end portions of the table main body 61 in the left-right direction, and are rotatable with the slide member 63 placed thereon. The slide member 63 is supported by a table 73B at its proximal end and supported by the rotary member 70 at its distal end, and slides in the tilt direction 71 . As a result, the slide member 63 can be pulled out from the table main body 61 toward the tip side in the inclination direction 71 . Then, the pedestal main body 61 is arranged above the cover projecting portion 21A, and the left side 21B of the device cover 21 and the pedestal 18 are arranged in close proximity to each other, and the slide member 63 (workpiece W) is pulled out to the take-out position P2. can be lower than the storage position P1. That is, the height of the workpiece W from the installation surface 19 at the take-out position P2 can be reduced. Therefore, the machine tool 10 can be downsized by moving the table 18 closer to the left side surface 21B, and the user's convenience of loading and unloading the work W can be improved. Note that the pedestal main body 61 and the slide member 63 may be configured so as not to be tilted. For example, the frame member 62 may hold the table main body 61 and the slide member 63 horizontally with respect to the installation surface 19 above the cover projecting portion 21A.

As shown in FIG. 5, a notch portion 21C is formed in the upper portion of the cover projecting portion 21A so as to match the positions and shapes of the table main body portion 61 and the slide member 63 which are inclined in the inclination direction 71. As shown in FIG. The stand main body 61 is, for example, approximately the same height as the upper surface of the cover projection 21A at approximately the center of the cover projection 21A in the front-rear direction, and is in contact with the cover projection 21A or is slightly separated from the cover projection 21A. ing. The notch portion 21C is an inclined surface formed from the center to the front end of the cover projecting portion 21A in the front-rear direction. The notch portion 21C is inclined downward at an angle larger than the inclination angle of the stand main body portion 61, and is inclined to the stand main body portion 61 in the vertical direction as it goes forward from the center of the front-rear direction cover projecting portion 21A. the distance between them is getting longer. In other words, the frame member 62 holds the table main body 61 apart from the upper surface of the cover protrusion 21A and the notch 21C except for the front-rear central portion of the cover protrusion 21A. With such a configuration, when the table 18 is arranged after the main unit 11 is arranged, when the table main body 61 is placed on the frame member 62 and fixed after the frame member 62 is installed, the table main body 61 is fixed. The stand body portion 61 can be attached while suppressing interference between the portion 61 and the cover projecting portion 21A. The same applies to the work of removing the stand body portion 61 . Therefore, it is possible to reduce the work load of attaching and detaching the table 18 .

As shown in FIGS. 6 and 7, the slide member 63 is provided with a placement portion 75 on which the workpiece W can be placed. The mounting portion 75 is attached to the upper surface of the slide member 63 on the base end side (left side in FIG. 5) in the tilt direction 71 . FIG. 8 shows a state in which the placement section 75 on which the workpiece W is placed is arranged at the position of a plate 81 to be described later and viewed from the front. As shown in FIG. 8, the mounting section 75 has a bottom plate 75A and three support members 75B. The bottom plate 75A is a plate-like metal member and is fixed to the upper surface of the slide member 63. As shown in FIG. Three support members 75B are arranged side by side in the left-right direction on the upper surface of the bottom plate 75A. The support member 75B is, for example, fixed by connecting a plurality of metal members, and a groove (not shown) matching the outer peripheral shape of the work W is formed in the upper end portion. The three support members 75B support from below the workpiece W inserted into the groove from above. The machine tool 10 can, for example, process workpieces W having different lengths in the axial direction. Of the three support members 75B, the machine tool 10 may use, for example, only two support members 75B (two on the right side in FIG. 8) or three In some cases, all of the support members 75B are used. 7 omits illustration of the bottom plate 75A and the support member 75B at the take-out position P2.

As shown in FIGS. 5 and 8, the bottom plate 75A of the mounting portion 75 is horizontally fixed to the slide member 63 inclined in the inclination direction 71. As shown in FIGS. Before and after the slide member 63 is slid in the tilt 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). The work W supported by the support member 75B is held, for example, in a state in which the axial direction thereof extends in the left-right direction, and slides. As a result, even when the slide member 63 is inclined, it is possible to prevent the workpiece W from falling off or rolling during the pull-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.

As shown in FIG. 6, the stand main body 61 is provided with a photoelectric sensor 79 and a proximity sensor 80 . The photoelectric sensor 79 is configured such that the workpiece W on the mounting portion 75 is arranged between the optical axes connecting the light projecting portion and the light receiving portion. Therefore, the machine tool 10 can detect the presence/absence of the workpiece W on the mounting portion 75 based on the detection signal of the photoelectric sensor 79 . The proximity sensor 80 is, for example, an inductive proximity sensor, and is arranged at a position a predetermined distance away from the tip of the work W in the axial direction of the work W placed on the placement section 75. . The proximity sensor 80 detects when a long work W using three support members 75B is placed on the placement section 75 and when a short work W using two support members 75B is placed on the placement section 75. In some cases, the distance from the tip of the workpiece W changes, and different detection signals are output. Accordingly, the machine tool 10 can determine the type of the workpiece W placed on the placement portion 75 based on the detection signal of the proximity sensor 80 .

Moreover, the mounting portion 75 has a rear surface cover 75C behind the support member 75B. The rear cover 75C has, for example, a rectangular plate shape elongated in the left-right direction, and has a shape that matches the opening 45A (see FIG. 1) of the left fence 45. As shown in FIG. The rear cover 75C slides together with the slide member 63 and closes the opening 45A of the left fence 45 at the removal position P2. A front cover 83 is provided at the tip of the slide member 63 in the tilt direction 71 . The front cover 83 has a shape that matches the opening 45A of the left fence 45, similarly 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.

A handle 85 is attached to the front surface of the front cover 83 . The user can pull out the slide member 63 by gripping the handle 85 and pulling it in the tilt direction 71 . A restricting member 83A (see FIG. 5) is provided behind the front cover 83. As shown in FIG. The regulating member 83A has a U-shaped frame shape with 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 inclination direction 71. ing. In the operation of pulling out the slide member 63, the opening 45A is closed by the regulating member 83A in the process of being pulled out until the mounting portion 75 is pulled out of the opening 45A (see FIG. 1). As a result, it is possible to prevent the user from erroneously inserting his/her hand or the like into the opening 45A while the workpiece W (the placement section 75) is being pulled out of the opening 45A.

Further, an electromagnetic lock 87 (see FIG. 4) and a latch 89 (see FIG. 6) are provided on the stand body portion 61 . For example, the electromagnetic lock 87 engages with the slide member 63 to close the slide member 63 in an initial state when the power of the machine tool 10 is turned on, and unlocks the lock 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 engages with the table main body 61 to move between a closed position where the sliding movement of the slide member 63 is restricted and an open position where it is not restricted.

For example, when the quality check button of the operation unit 23 is touch-operated, the machine tool 10 controls the loader 13 to move the work W placed on the spindle device 51 to the placement unit 75 of the placement table 18 . The machine tool 10 unlocks the electromagnetic lock 87 when the operation of placing the workpiece W on the placement section 75 is completed, and displays a message indicating that the placement is completed on the operation section 23 or the like. By unlocking the latch 89 and pulling out the slide member 63, the user can check the work W on the mounting section 75, that is, the processing quality of the work W after processing. In the present embodiment, there is a risk that the position at which the workpiece W is taken out will become higher by arranging the table 18 above the cover projecting portion 21A. On the other hand, as described above, by inclining the table 18 in the inclination direction 71, the workpiece W can be easily taken out from the slide member 63 that is pulled out.

Further, as shown in FIG. 8, the plate 81 is formed with a concave portion 81A that matches the shape of the convex portion 91 of the workpiece W. As shown in FIG. The plate 81 is attached above the front end (tip) side of the table main body 61, and is attached at a position through which the work W that slides on the slide member 63 passes. As a result, for example, after the user pulls out the slide member 63 to check the quality, when the work W is placed on the placement section 75 with the direction of the axial direction reversed and the slide member 63 is pushed in, the work W and the slide member 63 are pushed in. Plate 81 comes into contact. It is possible to inform the user that the work W placed on the placing section 75 is oriented in the wrong direction. It is possible to suppress the occurrence of mis-chucking of the work W by the loader 13 and chucking in the wrong direction. Note that the mounting table 18 does not have to include the electromagnetic lock 87, the latch 89, and the plate 81.

6 and 7, a first locking member 93 and a second locking member 94 are attached to the table main body 61 and the slide member 63, respectively. As the first and second locking members 93 and 94, for example, so-called ball catches, roller catches, rotary catches, etc. can be employed. The first locking member 93 has, for example, two female portions at the rear end of the table body portion 61, and the male portion provided on the slide member 63 is attached to the table body portion 61 when the slide member 63 is arranged at the storage position P1. to hold the slide member 63 at the retracted position P1. In this state, the front cover 83 closes the opening 45A. As a result, even if the electromagnetic lock 87 or the latch 89 is released due to failure or vibration, and force is applied in the tilt direction 71 by the weight of the workpiece W or the like, the slide member 63 is held at the storage position P1 by the first lock member 93. can be held to That is, it is possible to prevent the slide member 63 from being pulled out due to a failure of the electromagnetic lock 87 or the like while facilitating the removal of the workpiece W by slanting the table 18 .

The second locking member 94 has, for example, two female portions at the front end of the table main body portion 61, and the male portion provided on the slide member 63 is connected to the table main body portion in a state where the slide member 63 is arranged at the removal position P2. 61 to hold the slide member 63 at the take-out position P2. A stopper 95 is provided at the front end of the stand main body 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 lock member 94 and is provided 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. As shown in FIG. When the slide member 63 is slid to the position P2, the table 73B comes into contact with the stopper 95 and is restricted from moving forward. As a result, the slide member 63 can be stably held at the position P2 by the second lock member 94 and the stopper 95 even when the work W is placed on the placement portion 75 and the weight of the work W is applied to the slide member 63 . . In this state, the rear cover 75C closes the opening 45A. Further, as will be described later, the slide member 63 of the present embodiment is urged toward the proximal end by an urging mechanism 67 . For this reason, the second lock member 94 prevents the slide member 63 arranged at the take-out position P2 from being moved to the base end side by the biasing mechanism 67, that is, the slide member 63 is prevented from being closed without permission. can be done.

An oil pan 97 for recovering coolant 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 flows the coolant dropped from the workpiece W placed on the placement portion 75 downward in the inclination direction 71 . The slide member 63 is also 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 tilt direction 71 and provided at both left and right end portions of the end portion. Each of the two valves 99 can be switched between open and closed states by, for example, turning a cock.

Here, for example, even if air or the like is blown onto the work W conveyed from the spindle device 51, there is a possibility that the coolant will adhere to the work W. As shown in FIG. Therefore, when the work W is placed on the placing portion 75, there is a possibility that the coolant adhering to the work W may drop. In the pedestal 18 of the present embodiment, by inclining the slide member 63 and the like, the coolant dropped from the workpiece W can be caused to flow in the inclination direction 71 by the oil pan 97 and collected downstream for collection. By providing the valve 99 at the lower end of the inclination direction 71 , the user can easily collect the coolant accumulated at the lower end of the inclination direction 71 from the valve 99 .

Next, the biasing mechanism 67 will be described. The urging mechanism 67 urges the slide member 63 toward the table main body 61 , which is the upper side in the tilt direction 71 . More specifically, FIG. 9 is a rear view of the biasing mechanism 67, showing the biasing mechanism 67 viewed from behind. As shown in FIGS. 5, 6 and 9, the biasing mechanism 67 has a wire 101, a guide roller 103 and a weight 105. As shown in FIG.

The tip of the wire 101 is connected to the proximal end (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 table body portion 61 . A wire 101 is wound around the guide roller 103 . The guide roller 103 rotates, for example, around a rotation axis extending in the left-right direction, and rotates as the wire 101 moves.

The weight 105 is arranged at the proximal end portion of the wire 101 opposite to the slide member 63 with the guide roller 103 interposed therebetween. The biasing mechanism 67 has, for example, a bracket 109 containing two weights 105 . The bracket 109 has, for example, a box shape capable of accommodating two weights 105, and the base end of the wire 101 is fixed. The biasing mechanism 67 also has a slide mechanism 111 that slides the bracket 109 . The slide mechanism 111 is, for example, a slide device using bearings.
A and a table 111B slidable relative to the rail 111A, and the table 111B is slidably moved along the rail 111A by a bearing (such as a ball bearing) provided on the table 111B.

The rail 111A is arranged, for example, between two pillar members 65 provided behind the cover projecting portion 21A, and is fixed to the pillar members 65 along the vertical direction. The table 111B moves vertically along the rail 111A. Bracket 109 is fixed to table 111B. The guide roller 103 is arranged above the rail 111A. The wire 101 pulled out from the guide roller 103 toward the bracket 109 in the vertical direction is stretched between the bracket 109 and the wire 101 in the vertical direction. 9 shows the bracket 109 and the table 111B arranged at two different positions in the vertical direction on one drawing so that the slide movement of the bracket 109 can be easily understood.

5 and 9 show the positions of the weight 105 and the bracket 109 when the slide member 63 is arranged at the storage position P1. The bracket 109 is arranged at the lower end of the rail 111A when the slide member 63 is arranged 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 tilt direction 71 . Further, the biasing mechanism 67 always applies an external force to the slide member 63 to return it to the base end side (the table body portion 61). With this configuration, the biasing mechanism 67 can prevent the slide member 63 from moving downward in the tilt direction 71 due to failure of the electromagnetic lock 87, vibration, weight of the workpiece W, or the like. In addition, even when a heavy workpiece W is placed on the inclined slide member 63, the biasing mechanism 67 applies an external force to return the work W from the take-out position P2 to the storage position P1. , the slide member 63 pulled out can be returned into the table body portion 61 .

In addition, the biasing mechanism 67 of the present embodiment connects the weight 105 to the proximal end of the wire 101 wound around the guide roller 103 and connects the slide member 63 to the distal end of the wire 101 to apply an external force to the slide member 63 . Give. With such a configuration, the gravitational force acting on the weight 105 can be used to pull 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.

In addition, the loader 13 of this embodiment has a moving mechanism such as a rail table 25 that slides the chuck mechanism 29 in the device width direction (horizontal direction). Further, the cover projecting portion 21A projects in the left-right direction from the left side surface 21B of the device cover 21 . The table 18 holds the table main body 61 above the cover projection 21A by a frame member 62 so as to straddle the projecting cover projection 21A. With such a configuration, as shown in FIG. 4, the mounting base 18 and the cover protrusion 21A can be arranged so as to overlap each other in the vertical direction, and the mounting base 18 and the left side surface 21B (main unit 11) can be brought closer to each other in the horizontal direction. can. If the stand 18 is arranged on the left side of the cover projecting portion 21A, the transfer position of the exit device 17 (see FIG. 1) and the loader 13 must be further moved to the left. As a result, the distance L1 (see FIG. 4) by which the rail base 25 protrudes leftward from the left side surface 21B becomes longer. In contrast, the distance L1 can be shortened by arranging the stand body portion 61 of the stand 18 above the cover protrusion 21A and bringing the stand 18 closer to the main unit 11 as in the present embodiment. In addition, the stroke of the loader 13 can be shortened to shorten the line length of the work W production line.

Moreover, as shown in FIG. 8, the workpiece W of this embodiment has a substantially cylindrical shape elongated in one direction. As shown in FIG. 3, the spindle device 51 has a recess 51A formed along the longitudinal direction of the work W, and rotates the work W accommodated in the recess 51A. The main unit 11 also includes a pushing device 51B for pushing out the work W stored in the recess 51A of the spindle device 51 . In the machine tool 10 that processes such a long work W, a pushing device 51B or the like is required when taking out the work W from the spindle device 51 . Attaching the pushing device 51B increases the overall length of the spindle device 51, and it becomes necessary to provide the cover protrusion 21A and to accommodate at least part of the pushing device 51B in the cover protrusion 21A. Therefore, in the machine tool 10 for machining a long workpiece W, by adopting a configuration in which the table main body 61 is arranged above the cover projecting portion 21A, a space for arranging the pushing device 51B can be secured. , the overall size of the machine tool 10 can be reduced.

Incidentally, the spindle device 51 is an example of a work holding device. The horizontal direction is an example of the device width direction. The rail platform 25 is an example of a moving mechanism.

As described above, the present embodiment described above has the following effects.
A device cover 21 of a machine tool 10, which is one aspect of the present application, has a cover protrusion 21A that protrudes leftward from a left side surface 21B and houses a pushing device 51B. A frame member 62 of the stand 18 holds the stand body portion 61 against the installation surface 19 and holds the stand body portion 61 above the cover projecting portion 21A. With such a configuration, the table main body 61 on which the workpiece W is placed can be arranged above the cover protrusion 21A, and the distance between the table 18 and the left side surface 21B can be shortened. The mounting table 18 can be brought closer to the spindle device 51, the processing device 55, etc. while avoiding interference between the mounting table main body portion 61 and the cover projecting portion 21A. As a result, the transport time for transporting the workpiece W from the processing device 55 to the table 18 by the loader 13 can be shortened. Also, by arranging the devices close to each other, it is possible to reduce the size of the entire device.

In addition, the present application is not limited to the above embodiments, and can be implemented in various aspects with various modifications and improvements based on the knowledge of those skilled in the art.
For example, the device housed in the cover projecting portion 21A is not limited to the pushing device 51B, but may be an inducer provided in the spindle device 51, a port for the inducer, a claw for holding the work W, or a member combining them. But it's okay. Also, the pushing device 51B may be entirely housed in the cover projecting portion 21A, or only a part thereof may be housed.
In the above-described embodiment, the spindle device 51 has the recess 51A for storing the work W, but it does not have to.
Further, the work holding device of the present application may be configured to chuck the work W only by the child claws without using the recessed portion 51A, or may be a collet chuck that does not use the child claws.

In the above-described embodiment, the mounting table 18 is configured to tilt downward from the rear to the front, but the tilt direction is not limited to this direction. For example, as shown in FIG. 10, the pedestal 131 may be configured to be inclined in the horizontal direction (apparatus width direction). An inclination direction 71 of the table 131 shown in FIG. 10 is, for example, a direction from upper right to lower left. Even with such a configuration, the base end (right end) of the table main body 61 and the left side surface 21B can be brought close to each other, and the size of the machine tool 10 can be reduced. Alternatively, the pedestal main body 61 and the slide member 63 may be configured to be tilted upward in the tilt direction 71 from the base end side to the distal end side (for example, in the direction from the lower left to the upper right in FIG. 5). good. That is, the slide member 63 may be drawn upward.

Also, the mounting table 18 does not have to be provided with 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 proximal end of the wire 101 without using the bracket 109 . Also, the biasing mechanism 67 does not have to include the slide mechanism 111 . Moreover, a spring that biases the slide member 63 with an elastic force may be employed as the biasing mechanism.
The pedestal 18 does not have to include at least one of the first and second locking members 93 and 94 .
The cover projecting portion 21A does not have to be provided with 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 may be other positions such as near the mounting portion 75 . Also, the valve 99 and the oil pan 97 may be provided on the stand body portion 61 .
The shape of the work W shown in FIG. 8 is an example, and the shape of the work of the present application may be another shape such as a thin annular shape.
A lathe equipped with a spindle device 51 was employed as a machine tool equipped with the stand of the present disclosure. However, the type of machine tool provided with the pedestal is not particularly limited. The machine tools of the present disclosure may be milling machines, drilling machines, milling cells, turning centers, machining centers, and the like.

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 body, 62 frame member, 63 slide member, 67 urging mechanism, 71 inclination direction, 75 placement section, 93 first lock member, 94 second lock member, 97 oil pan, 99 valve, 101 wire, 103 guide roller, 105 weight, W work, P1 storage position, P2 extraction position.

Claims (9)

a work holding device for holding a work;
a processing device for processing the work held by the work holding device;
a loader that transfers the workpiece to and from the workpiece holding device;
a device cover housing the workpiece holding device and the processing device;
a workpiece table on which the workpiece gripped by the loader can be placed;
A machine tool comprising
The device cover includes:
having a cover projecting portion projecting outward from the device cover and accommodating at least a portion of the work holding device;
The workpiece table is
a slide member having a placement portion on which the work is placed;
a table main body that slidably holds the slide member;
a frame member that holds the pedestal main body against an installation surface on which the machine tool is installed and that holds the pedestal main body above the cover protrusion;
A machine tool having The loader
a chuck mechanism for gripping the workpiece;
a movement mechanism that slides the chuck mechanism in the width direction of the machine tool;
has
The cover protrusion is
The machine tool according to claim 1, which protrudes outward from the device cover in the width direction of the device. The pedestal main body is
held by the frame member in an inclined state,
The slide member
held by the pedestal main body so as to be able to be pulled out downward in the inclination direction of the pedestal main body;
The frame member is
3. The machine tool according to claim 1, further comprising an urging mechanism for urging said slide member toward said table main body, which is an upper side in said tilting direction. The biasing mechanism is
a wire having a distal end connected to the slide member;
a guide roller rotatably held with respect to the table main body and around which the wire is wound;
a weight connected to the base end of the wire opposite to the slide member with the guide roller interposed therebetween;
4. The machine tool of claim 3, comprising: The mounting portion of the slide member is
5. The machine tool according to claim 3, wherein the workpiece is held horizontally before and after the slide member is slid in the inclined direction. The pedestal main body is
a first locking member that holds the slide member pulled out to the take-out position from which the work can be taken out, at the take-out position;
a second locking member that holds the slide member pushed into the storage position stored in the stand main body at the storage position;
6. A machine tool according to any one of claims 3 to 5, comprising: The cover protrusion is
7. The machine tool according to any one of claims 3 to 6, wherein an upper portion has a notch portion that is notched in accordance with the position of the table main body portion that is inclined in the inclination direction. The slide member
an oil pan provided below the mounting section for flowing coolant dropped from the work mounted on the mounting section downward in the tilt direction;
a valve for discharging the coolant;
has
The valve is
The machine tool according to any one of claims 3 to 7, wherein the machine tool is attached to a lower end of the slide member in the tilt direction. The workpiece is
It has a long shape in one direction,
The work holding device is
a spindle device having a recess formed along the longitudinal direction of the work and rotating the work housed in the recess;
a push-out device for pushing out the work housed in the recess of the spindle device from the recess;
has
The cover protrusion is
9. A machine tool according to any one of claims 1 to 8, wherein at least part of said pushing device is housed.

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