JP2007253263A - Machine tool with workpiece supplying and recovering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lathe with a workpiece supplying and recovering device capable of being installed without an additional space, and advantageously used for manufacturing processed workpieces requiring sort with a low frequency for exchanging pallets for housing the workpieces. <P>SOLUTION: This lathe with a workpiece supplying and recovering device includes a workpiece supplying and recovering device comprising a lathe having a main spindle with a main spindle chuck for gripping a workpiece at a tip, a pallet supporting shelf supporting a plurality of pallets arranged above the main spindle, and a mechanism for delivering the workpiece to be housed in the pallet. In this lathe, the pallet supporting shelf has a supporting structure for mutually spacing a plurality of pallets in an upward and downward direction, and the work delivery mechanism has a chuck capable of gripping the chuck, and moves forward and backward in a spacing between a plurality of the pallets supported by the pallet supporting shelf. The lathe has a constitution including horizontal plane and vertical movement means for allowing a relay chuck to access to at least all of the workpieces of a plurality of the pallets. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a machine tool including a workpiece supply and recovery device.

  A machine tool having a rotatable spindle having a spindle chuck for gripping a workpiece at the tip and a tool base to which a workpiece machining tool can be attached, and a plurality of the machine tools arranged above the spindle table of the machine tool. A pallet support shelf for supporting a single pallet and an unprocessed workpiece accommodated in the pallet are taken out and supplied to the spindle chuck, and the processed workpiece is collected from the chuck and returned to a predetermined position on the pallet. 2. Description of the Related Art A machine tool with a workpiece supply / recovery device configured by a workpiece supply / recovery device including a workpiece transfer mechanism is already known.

  Patent Document 1 discloses an attachment base (pallet support shelf) on which a pallet on which a workpiece is set is installed, which is attached above a spindle (base), an intermediate delivery device having a turning chuck provided on the attachment base, and an attachment base. A pickup device provided with a pickup chuck for delivering a workpiece between the pallet and the turning chuck, and a loader chuck and an unloader chuck for delivering the workpiece between the turning chuck and the main body chuck of the spindle. A workpiece delivery device (work supply recovery device) configured by a workpiece supply device provided is disclosed. The intermediate delivery device, pickup device, and workpiece supply device of this workpiece delivery device function as the workpiece transfer mechanism.

  FIG. 4 of the same document discloses a lathe (machine tool) provided with the workpiece transfer device (work supply / collection device), and this lathe has a mounting base on which a pallet on which a workpiece is set is installed. Is installed above the spindle (base), the space required for the installation is considered to be only the floor area of the lathe.

In addition, two pallets are arranged in a horizontal direction on the mounting base of the workpiece transfer device provided in the lathe. The reason for using two pallets in this way is that when one pallet is used, when all the unprocessed workpieces have been processed and the processed workpieces are stored in the pallet, This is because, since the work cannot be processed with a lathe until the worker exchanges the pallet in which the work is accommodated, the productivity is lowered.
JP 2003-334737 A

  The lathe (machine tool) with a workpiece supply / recovery device described in Patent Document 1 is added to the installation because the mounting base on which the pallet on which the workpiece is set is placed is arranged above the spindle (table) of the lathe. Has the advantage of not requiring a large space. However, in this lathe with a workpiece supply / recovery device, normally, two or more pallets are arranged horizontally (in the same plane) above the spindle (table), so the size of each pallet is the lathe ( The size of the floor area of the machine tool is limited to one half or less. That is, the number of workpieces that can be accommodated on one pallet is small. Therefore, the lathe with a workpiece supply and recovery device having such a configuration can reduce the space required for installation, but the operator frequently changes the pallet because the number of workpieces that can be accommodated in one pallet is small. There is a need.

  In addition, for example, an unprocessed workpiece stored in one pallet is processed to produce two or more types of processed workpieces with different finished shapes, and these are stored in separate pallets for each finished shape. When a processed workpiece is stored in a separate pallet for each shipping destination, one or more separate pallets are required to store the processed workpiece. In order to increase the number of pallets used in this way, it is necessary to further reduce the size of each pallet (to a size equal to or smaller than the area obtained by dividing the lathe floor area by the number of pallets used).

  That is, in the lathe with a workpiece supply / recovery device described in the above document, when the number of pallets used for sorting processed workpieces for each finished shape or for each shipping destination is increased, the size of one pallet is reduced. Therefore, the pallet replacement frequency is further increased, and it is necessary to prepare a new pallet of the small size. Therefore, such a lathe with a workpiece supply / recovery device also has a problem that it is not suitable for manufacturing products (machined workpieces) accommodated in a plurality of pallets because sorting is necessary after machining.

  The object of the present invention is that it can be installed within the floor area of a lathe, the pallet for storing the work is less frequently replaced, and a plurality of pallets are arranged according to the purpose of manufacturing a processed work that requires sorting. An object of the present invention is to provide a lathe with a workpiece supply / recovery device that can be used.

  The present invention is a machine tool including a rotatable spindle having a chuck for gripping a workpiece at a tip and a tool base to which a workpiece processing tool can be attached, and is disposed above the spindle table of the machine tool. , A pallet support shelf for supporting a plurality of pallets, and an unprocessed work housed in the pallet is taken out and supplied to the spindle chuck, the processed work is collected from the spindle chuck, and a predetermined pallet of the pallet is collected. A machine tool with a workpiece supply / recovery device configured by a workpiece supply / recovery device including a workpiece transfer mechanism that returns to a position, wherein the pallet support shelf mounts a plurality of pallets vertically spaced from each other The workpiece transport mechanism is advanced into a gap between a plurality of pallets supported by the pallet support shelf, which includes a chuck capable of gripping a workpiece. Exited in a work supplying and collecting apparatus machine tool and having a configuration including an arm moving means movable in the horizontal plane and the lift direction relay chuck has access to at least the plurality of pallets all work.

The preferable aspect of the lathe with a workpiece | work supply collection | recovery apparatus of this invention is as follows.
(1) The work transport mechanism has an arm that can move into and out of a horizontal plane having a chuck that can grip a work and can move into and out of a gap between a plurality of pallets supported by a pallet support shelf. In addition to the moving means, a supply chuck that receives an unprocessed work from the relay chuck of the arm moving means and supplies the processed work to the spindle chuck, receives a processed work from the chuck of the main spindle, and receives the processed work of the arm. A chuck pair including a recovery chuck to be returned to the relay chuck, and a second chuck shaft that allows the chuck pair to move up and down between the workpiece transfer position with the relay chuck of the arm and the workpiece supply position of the spindle chuck. A machine tool with a workpiece supply and recovery device.
(2) The work longitudinal direction inserted into the pallet is vertical, the spindle longitudinal direction is horizontally arranged, and the arm is rotated 90 degrees so that the chuck of the arm can be positioned in either the vertical direction or the horizontal direction. It is a machine tool with a workpiece supply and recovery device that can be attached to the arm.

  The lathe with a workpiece supply / recovery device according to the present invention does not require additional space for its installation because the pallet support shelf is disposed above the spindle (table) of the machine tool. The machine tool with a workpiece supply / recovery device of the present invention supports a plurality of pallets in a vertically stacked state with a pallet support shelf so that the pallets have the same floor area as the machine tool. It is possible to use a large size (when the pallet does not protrude outside the space above the machine tool), that is, one pallet can accommodate a larger number of workpieces than before. Because it can, pallet replacement frequency is low. In addition, the machine tool with a workpiece supply and recovery device of the present invention can use a large number of pallets without increasing the floor area, so it is also possible to use different pallets according to the purpose. In order to sort processed workpieces, Even if the number is increased, there is no need to change the size of each pallet, so it can be used advantageously for the manufacture of products (machined workpieces) that need to be sorted for each finished shape or each shipping destination, for example. Can do.

  A machine tool with a workpiece supply and recovery device of the present invention will be described with reference to the accompanying drawings, taking a lathe as an example. FIG. 1 is a perspective view showing a configuration example of a lathe with a workpiece supply / recovery device according to the present invention, and FIG. 2 shows the lathe with a workpiece supply / recovery device of FIG. 1 viewed from the side opposite to the workpiece transport mechanism 17 side. 3 is a partially cutaway side view, and FIG. 3 is a partially cutaway front view of the lathe 10 with the workpiece supply and recovery device of FIG. 2 and 3, the arm 19 is in a lowered state, and the lifting means 20 that supports the arm 19 is drawn in a state in which it is moved toward the tip of the main spindle 12 of the lathe. In FIG. 3, FIG. 2 omits the chuck pair 21 and the second elevating / lowering means 22 disposed above the main shaft 12 shown in FIG.

  FIG. 4 is a perspective view showing the configuration of the pallet 15c supported by the pallet support shelf 16 of the lathe 10 with the workpiece supply / recovery device of FIG. Each configuration of the pallet 15a and the pallet 15b is the same as that of the pallet 15c. FIG. 5 is a view showing a state in which the arm 19 of the lathe 10 with the work supply / collection device shown in FIG. 3 is advanced, and FIG. 6 shows the relay chuck 18 of the lathe 10 with the work supply / collection device shown in FIG. It is a figure which shows the state made to do.

  Hereinafter, an example in which a lathe is used for the structure of a machine tool with a workpiece supply and recovery device of the present invention will be described. A lathe 10 with a workpiece supply / recovery device shown in FIGS. 1 to 3 includes a rotatable spindle 12 having a spindle chuck 11 for gripping a workpiece at a tip and a tool base 13 to which a workpiece processing tool can be attached. 14 and the pallet support shelf 16 that supports a plurality of pallets (for example, three pallets 15a, 15b, and 15c) and is accommodated in the pallet (for example, pallet 15c). An unprocessed workpiece (FIG. 4: 23a) is taken out and supplied to the spindle chuck 11 of the spindle 12, and the workpiece conveying mechanism 17 collects the processed workpiece from the spindle chuck 11 and returns it to a predetermined position on the pallet. A work supply and recovery device is provided.

  And the lathe 10 with the workpiece | work supply collection | recovery apparatus of this Example has the support structure in which the pallet support shelf 16 mounts the several pallets 15a, 15b, 15c in the up-down direction with a predetermined space | gap, The workpiece transfer mechanism 17 includes a relay chuck 18 capable of gripping the workpiece, and an arm 19 that can move in and out of the space between a plurality of pallets supported by the pallet support shelf 16 and a left and right movable arm 19. The relay chuck 18 provided on the arm 19 includes at least a plurality of pallets 15a and 15b. The relay chuck 18 is provided with an elevating unit 20 that supports the elevating unit 20 and a front / rear moving unit 30 that allows the elevating unit 20 to move back and forth. , 15c can be accessed.

  As shown in FIG. 1, a pallet support shelf 16 of a lathe 10 with a workpiece supply / recovery device is a frame erected on a base (bed) 24 of a lathe (for example, a known main spindle moving type lathe) 14. It is fixedly supported at the top of 25 and is arranged above the main shaft 12 of the lathe 14. For this reason, the lathe 10 with a workpiece | work supply collection device does not require an additional space for installation of a workpiece | work supply collection device.

  The pallet support shelf 16 has a support structure in which a plurality of pallets (for example, three pallets 15a, 15b, and 15c) are placed with a gap therebetween in the vertical direction. The floor area of the same size as the floor area (when configured so that the pallet does not protrude outside the space above the lathe) can be used. That is, the machine tool 10 with the workpiece supply / recovery device can accommodate a larger number of workpieces on a single pallet than before, so the frequency of pallet replacement is low.

  As will be described in detail later, in the machine tool with the workpiece supply / recovery device, the workpiece is removed from the pallet (any one of the pallets 15a, 15b, and 15c) by using the workpiece transfer mechanism 17, and the spindle 12 is supplied to a spindle chuck 11 for gripping a workpiece, and after the workpiece is processed by a workpiece processing tool such as a tool (attached and fixed to the tool post 13 in FIG. 2) while rotating the spindle 12, By repeating the operation of collecting the processed workpiece 23b from the chuck 11 using the transport mechanism 17 and returning it to a predetermined position on the pallet, a plurality of workpieces accommodated in the pallet are processed.

  As shown in FIGS. 1 to 3, when three pallets 15a, 15b, and 15c are supported on the pallet support shelf 16, these pallets are, for example, the following (1) to (3). An unmachined workpiece is machined as shown in any of the above.

(1) Three pallets 15a, 15b and 15c each accommodating a plurality of unprocessed workpieces 23a are attached to the pallet support shelf 16. Then, the unprocessed workpieces 23a accommodated in the pallet 15a are taken out one by one and supplied to the spindle chuck 11 for gripping the workpiece 12 of the spindle 12 of the lathe 14 by the workpiece transfer mechanism 17 to perform processing, and the workpiece transfer mechanism 17 Thus, the processed workpiece 23b is returned to the original position of the pallet 15a. By repeating this operation, all the unprocessed workpieces accommodated in the pallet 15a are processed. Next, in the same manner, all the unprocessed workpieces accommodated in each pallet are processed for each of the pallet 15b and the pallet 15c.

  For example, while processing of the workpieces on the pallet 15a and the pallet 15b is completed and the unprocessed workpiece on the pallet 15c is being processed, an unprocessed workpiece prepared separately from the pallet 15a and the pallet 15b in which the processed workpiece is accommodated. By exchanging with the accommodated pallet, after all the unprocessed workpieces on the pallet 15c have been processed, the unprocessed workpieces on the pallet 15a can be continuously processed again.

  As described above, the machine tool with the workpiece supply / recovery device can change the pallet without interrupting the machining by the lathe 14, and further includes three pallets each accommodating a larger number of workpieces than before. In order to use, the exchange frequency of a pallet can be decreased.

(2) A pallet 15a and a pallet 15b each accommodating a plurality of unprocessed workpieces and an empty pallet 15c not containing workpieces are attached to the pallet support shelf 16. A plurality of unprocessed workpieces stored in the pallet 15b are taken out one by one, processed in the same manner as in the above (1), and the operation of returning the processed workpiece to the pallet 15c is repeated to the pallet 15b. Machining of all workpieces accommodated. As a result, the pallet 15b becomes empty. Next, all the unprocessed workpieces accommodated in the pallet 15a are processed in the same manner, and the processed workpieces are returned to the pallet 15b.

  At this time, while processing the unprocessed workpieces on the pallet 15a, the pallet 15c storing the processed workpieces is replaced with a pallet storing the unprocessed workpieces prepared separately. After the processing of the processed workpiece is completed, the unprocessed workpiece on the pallet 15c can be continuously processed and returned to the pallet 15a. Also in this case, the processing is not interrupted for the same reason as in the case of (1) above, and the pallet replacement frequency can be reduced.

(3) A pallet 15a in which a plurality of unprocessed workpieces are accommodated, and an empty pallet 15b and a pallet 15c in which no workpieces are accommodated are attached to the pallet support shelf 16. Then, the unprocessed workpieces stored in the pallet 15a are taken out one by one, for example, half of the workpieces stored in the pallet 15a are processed into a predetermined finished shape, and the operation of returning the processed workpieces to the pallet 15b is repeated. Next, the remaining half of the workpieces accommodated in the pallet 15a are processed into a finished shape different from the above, and the operation of returning the processed workpieces to the pallet 15c is repeated, so that all the workpieces accommodated in the pallet 15a are processed. Processing.

  As described above, the machine tool with the workpiece supply / recovery device increases the number of pallets in order to sort the processed workpieces (as described above, sorts the processed workpieces into two pallets, or into three or more pallets. However, it is not necessary to change the size of each pallet to a smaller size. For example, for products that have to be sorted (finished workpieces) for each finished shape or each shipping destination as described above. It can be advantageously used for production.

  Next, the workpiece conveyance mechanism 17 of the workpiece supply and recovery apparatus will be described. In addition, the X-axis direction, the Y-axis direction, and the Z-axis direction used in the following description mean directions along arrow X, arrow Y, and arrow Z that are written in FIG.

  As described above, the pallet support shelf 16 of the lathe 10 with the workpiece supply and recovery device has a support structure for placing a plurality of pallets 15a, 15b, and 15c with a predetermined gap in the vertical direction. Therefore, for example, the workpiece transfer mechanism 17 is connected to the workpiece conveyance mechanism 17 so that the workpiece can be taken out, and the workpiece can be returned to the palette 15b or the palette 15c so that the workpiece can be gripped. A chuck 18 is provided and enters a gap between a plurality of pallets supported by the pallet support shelf 16 (for example, between the pallets 15a and 15b, or between the pallets 15b and 15c and above the pallets 15a). The arm 19 that can be moved left and right (movable along the X-axis direction), the lifting means 20 that holds the arm 19 so that it can be lifted (Y-axis direction), and the back-and-forth movement that allows the lifting means 20 to move back and forth (Z Axial direction) means 30, and at least a plurality of pallets 15a, 15b, 15c And it is configured to allow access to the work of Te.

  The relay chuck 18 of the work transport mechanism 17 shown in FIGS. 1 to 3 is attached to the tip of the arm 19. As the relay chuck 18, a known one (for example, one that grips or releases a workpiece by opening and closing a chuck claw by air pressure) can be used.

  The arm 19 including the relay chuck 18 is supported by an arm support member 32 so as to be movable in the X-axis direction, and can be moved left and right (moved in the X-axis direction) by driving a motor 31a. The support member 32 of the arm 19 can be lifted and lowered in the Y-axis direction together with the arm 19 along the guide rail 33c of the lifting means 20 by driving the motor 31c. The elevating means 20 is movable in the front-rear direction (Z-axis direction) along the guide rail 33b fixed to the side surface of the pallet support shelf 16 by driving the motor 31b, that is, along the pallet support shelf 16. .

  Then, for example, the motor 31c is driven to lower the arm 19 to a predetermined position, and then the motor 31a is driven to move left and right, thereby moving the arm 19 together with the relay chuck 18 to the pallet 15b as shown in FIG. 3 and the pallet 15c can be made to enter, or, as shown in FIG. In this way, the arm 19 is moved left and right (moved in the X-axis direction), the lifting means 20 is moved forward and backward along the pallet support shelf 16 (moved in the Z-axis direction) together with the arm 19, and the chuck 18 is moved to a predetermined position on the pallet 15c. The workpiece 19a can be taken out from the pallet 15c by placing it above the workpiece 23a, moving the arm 19 downward (moving in the Y-axis direction) and holding the workpiece 23a by the relay chuck 18 and then raising it. it can. Similarly, the processed workpiece gripped by the chuck 18 is moved in the empty space of the pallet 15c (for example, the pallet shown in FIG. 4) while moving the arm 19 in the X-axis direction, the Y-axis direction, and the Z-axis direction. 15c can be returned to the recess 27).

  Subsequently, when an unmachined workpiece is taken out from the pallet 15b or when the machined workpiece is returned to the pallet 15b, the arm 19 is moved to the position shown in FIG. 3 and then between the pallet 15a and the pallet 15b. It may be raised to the position, then moved into and out of the gap between the pallet 15a and pallet 15b, and the same operation as described above may be performed.

  The relay chuck 18 of the arm 19 is, for example, a vertical position (position shown in FIG. 2) and a horizontal position (position shown in FIG. 6) in order to transfer the workpiece to and from the chuck pair 21 of the workpiece transfer mechanism 17 described later. It is preferable that the arm 19 is attached to the arm 19 so that it can be rotated by 90 degrees so that any of the positions can be taken. When the relay chuck 18 is rotatably attached to the arm 19 in this way, the configuration of the workpiece transfer mechanism 17 is more than that in the case of using an independent device (intermediate delivery device) for rotating the chuck as described in Patent Document 1. Is simple, small and inexpensive. For this reason, each pallet supported by the pallet support shelf 16 can be of a larger size. For this reason, the replacement frequency of the pallet can be further reduced.

  FIG. 7 is a view for explaining a mechanism for rotating the relay chuck 18 of the arm 19. FIG. 7 (a) shows a chuck arranged vertically (takes a vertical position), and FIG. 7 (d) shows a chuck arranged horizontally (takes a horizontal position). 7 (b) and 7 (c), the chuck is changed from the vertically disposed state shown in FIG. 7 (a) to the horizontally disposed state shown in FIG. 7 (d). The arrangement of the chuck in between is shown.

  The fixed cam 38 shown in FIG. 7 is fixed to the frame 26 attached to the pallet support shelf 16 as shown in FIG. The frame 26 is attached in the vicinity of the right end of the pallet support shelf 16 when viewed from the front end side of the main shaft 12 of the lathe 14. That is, the fixed cam 38 and the frame 26 are arranged at a position slightly on the left side of the main shaft 12 of the lathe 14 as indicated by an imaginary line in FIG. Therefore, as will be described later, when the relay chuck 18 of the arm 19 and the chuck pair (FIG. 2: 21) deliver the workpiece, they do not contact the fixed cam 38 or the frame 26.

  As shown in FIG. 7A, the relay chuck 18 is fixed to a chuck fixture 34, and this fixture 34 is attached to an attachment member 35 provided at the tip of the arm 19 with a pivot 36 as a center. (Along with the relay chuck 18). The attachment member 35 and the chuck fixture 34 are connected to each other by a tension coil spring 37 on the front side of the figure relative to the fixture 34.

  The coil spring 37 arranged as shown in FIG. 7A applies a force that rotates the fixing tool 34 about the pivot 36 in the clockwise direction to the fixing tool 34 to which the relay chuck 18 is fixed. On the other hand, the fixture 34 is provided with a stopper (not shown) that prevents the fixture 34 from rotating further in the clockwise direction from the state in which the relay chuck 18 is arranged vertically (vertical position). ing. For this reason, the relay chuck 18 shown in FIG. 7A maintains a vertically arranged state by the coil spring 37 and the stopper (the vertical position is maintained without swinging around the pivot 36).

  Next, as shown in FIG. 7B, when the relay chuck 18 (that is, the arm 19) is lowered while the engagement member 39 attached to the chuck fixture 34 and the fixed cam 38 are engaged, the relay is performed. The fixture 34 to which the chuck 18 is fixed rotates about the pivot 36. If the relay chuck 18 is lifted from this state, the relay chuck 18 is rotated clockwise around the pivot 36 together with the fixture 38 by the coil spring 37 and the stopper in the same manner as described above and arranged vertically. And maintain this arrangement.

  When the relay chuck 18 is further lowered as shown in FIG. 7C, the fixture 34 to which the relay chuck 18 is fixed further rotates around the pivot 36, and the end 37a of the coil spring 37 is The straight line connecting the end portion 37 b of the coil spring 37 and the pivot 36 is exceeded. For this reason, the coil spring 37 arranged as shown in FIG. 7C gives a force for rotating the fixture 34 counterclockwise about the pivot 36 to the fixture 34 to which the chuck 18 is fixed. . For this reason, the relay chuck 18 rotates counterclockwise around the pivot 36 together with the fixture 34. On the other hand, the fixture 34 is provided with a stopper (not shown) that prevents the fixture 34 from rotating further counterclockwise from the state in which the relay chuck 18 is disposed horizontally (lateral position). ing. For this reason, the relay chuck 18 is horizontally arranged by the coil spring 37 and the stopper as shown in FIG. 7D, and this arrangement is maintained (the horizontal position is maintained without swinging around the pivot 36). to continue). Thus, the relay chuck 18 can rotate at an angle of 90 degrees from the state shown in FIG.

  Contrary to the above description, when the relay chuck 18 is raised while the engaging member 39 and the fixed cam 38 are engaged, the arrangement of the relay chuck 18 is changed from the horizontal direction to the vertical direction (the vertical position is changed). And maintain this arrangement. That is, the relay chuck 18 is stably disposed in either the vertical position or the horizontal position by the coil spring 37 and the stopper.

  If such a mechanism is used, it is not necessary to use a driving device for changing the arrangement of the chuck (rotating at an angle of 90 degrees), so that the configuration of the workpiece transport mechanism 17 of the workpiece supply and recovery device is further simplified. (That is, the size of the work transfer device is reduced). For this reason, as each pallet 15a, 15b, 15c supported by the pallet support shelf 16, a thing of a larger size can be used (as compared with the case where a drive device for changing the position of the chuck is used). become. For this reason, the replacement frequency of the pallet can be further reduced.

  As shown in FIGS. 1 and 3, the work transport mechanism 17 includes a relay chuck 18 capable of gripping the work, and can move into and out of a gap between a plurality of pallets supported by the pallet support shelf 16. In addition to the movable arm 19, the lifting / lowering means 20 that holds the arm 19 so as to be able to move up and down, and the forward / backward moving means 30 that allows the lifting / lowering means 20 to move back and forth, A chuck pair 21 including a supply chuck 21a to be supplied to the spindle chuck 11, a recovery chuck 21b that receives a processed workpiece from the chuck 11 of the spindle 12 and returns the workpiece to the relay chuck 18 of the arm 19, and the chuck pair 21, the workpiece transfer position between the arm 19 and the relay chuck 18 and the spindle chuck 11 of the spindle 12. Preferably it includes a second lift means 22 for raising and lowering between the location.

  With such a configuration, the unprocessed workpiece is received by the spindle chuck 11, and the relay chuck 18 is received from the recovery chuck 21 a of the chuck pair 21 while the spindle chuck 12 rotates and performs processing such as cutting and grinding. By returning the processed workpiece to a predetermined position on the pallet and taking out the unprocessed workpiece to be processed next from the pallet and preparing it in the supply chuck 21a of the chuck pair 21, processing such as cutting by the machine tool is completed. Then, since the machined workpiece can be taken out immediately and the unmachined workpiece can be supplied, the productivity of the lathe 14 can be increased.

  The chuck pair 21 of the workpiece supply / recovery device 10 is fixed to the lower end of the second lifting / lowering means 22 and can be lifted / lowered by driving a motor 41. As shown in FIG. 2, the second elevating means 22 is fixed to the extension 26a of the frame bent in the right direction in FIG. 2 from the upper end of the frame 26 fixing the fixed cam 38. The chuck pair 21 is disposed at the lower end of the second lifting means 22.

  Next, a procedure for transferring the workpiece between the relay chuck 18 of the arm 19 and the chuck pair 21 will be described with reference to FIG. FIG. 8 shows a state in which the chuck pair 21 has been raised to the delivery position of the arm 19 with the relay chuck 18. 8 (a), 8 (b), and 8 (c) show a procedure for transferring the unprocessed workpiece 23a from the relay chuck 18 to the chuck pair 21 as shown in FIGS. 8 (d), 8 (e), and 8 (c). (F) shows a procedure in which the relay chuck 18 receives the processed workpiece 23 b from the chuck pair 21.

  When the unprocessed workpiece 23a is transferred from the relay chuck 18 to the chuck pair 21, first, as shown in FIG. 8 (a), the relay chuck 18 that holds the unprocessed workpiece 23a taken out from the pallet is disposed horizontally. Next, as shown in FIG. 8B, the relay chuck 18 is moved in the right direction in the drawing so that the unprocessed workpiece 23a is gripped by the supply chuck 21a of the chuck pair 21, and as shown in FIG. After releasing, move it to the left in the figure.

When the chuck 18 receives the processed workpiece 23b from the gripping device 21,
In FIG. 8C, the relay chuck 18 in which the unprocessed workpiece 23a is transferred to the supply chuck 21a is first arranged horizontally as shown in FIG. 8D, and then relayed as shown in FIG. 8E. The chuck 18 is moved to the right in the drawing, the processed workpiece 23b held by the recovery chuck 21b is held by the relay chuck 18, and the recovery chuck 21b is opened as shown in FIG. The chuck 18 is moved in the left direction in the figure.

  The arrangement of the supply chuck 21a and the recovery chuck 21b in the chuck pair 21 is upside down, and there is no problem even if the recovery chuck 21b is placed up and the supply chuck 21a is placed down.

  Then, as shown in FIG. 9, the chuck pair 21 that has received the unprocessed workpiece 23a is lowered by driving the motor 41, and has received the processed workpiece 23b that is held by the spindle chuck 11 of the spindle 12 of the lathe 14. Later, the unmachined workpiece 23 a is transferred to the spindle chuck 11. When the chuck pair 21 is lowered, the spindle 12 of the lathe 14 is moved back to a position where it does not interfere with the chuck pair 21 (position shown in FIG. 9).

  A procedure for transferring the workpiece between the chuck pair 21 and the spindle chuck 11 of the spindle 12 of the lathe 14 will be described with reference to FIG. 10 (a), 10 (b) and 10 (c) show the procedure in which the recovery chuck 21b of the chuck pair 21 receives the processed workpiece 23b from the spindle chuck 11 of the spindle 12 of the lathe 14 as shown in FIG. ) And FIG. 10 (e) show a procedure for transferring the unprocessed workpiece 23 a from the supply chuck 21 a of the chuck pair 21 to the spindle chuck 11 of the spindle 12 of the lathe 14. FIG. 10F shows a state in which the unmachined workpiece 23a gripped by the spindle chuck 11 is being cut by the tool 44 (work tool) of the tool post 13 (tool table).

  When the chuck pair 21 receives the processed workpiece 23b from the spindle chuck 11 of the spindle 12 of the lathe 14, first, the recovery chuck 21b of the chuck pair 21 is connected to the spindle chuck 11 of the spindle 12 as shown in FIG. Lower to the position where it faces. Next, as shown in FIG. 10 (b), the spindle 12 is moved in the right direction in the drawing so that the processed workpiece 23b is gripped by the recovery chuck 21b, and the spindle chuck 12 is opened as shown in FIG. 10 (c). The main shaft 12 is moved to the left in the figure.

  When the unmachined workpiece 23a is transferred from the supply chuck 21a to the spindle chuck 11 of the spindle 12 of the lathe 14, first, the supply chuck 21a is disposed opposite to the spindle chuck 11 of the spindle 12 as shown in FIG. Lower to the position where Next, as shown in FIG. 10 (e), the spindle 12 is moved to the right in the figure to grip the unmachined workpiece 23a by the spindle chuck 11, and the supply chuck 21a is opened to move the spindle 12 to the left in the figure. Then, the chuck pair 21 is raised.

  The unmachined workpiece 23a gripped by the spindle chuck 11 is cut by a workpiece machining tool (bite) 44 of the tool post 13 as shown in FIG.

  FIG. 11 is a perspective view showing another configuration example of the machine tool with the workpiece supply and recovery device of the present invention. The configuration of the lathe 50 with the workpiece supply / recovery device of FIG. 11 is the same as that of the workpiece supply / recovery of FIG. This is the same as the lathe 10 with the apparatus.

  FIG. 12 is a perspective view showing still another configuration example of the machine tool with the workpiece supply and recovery device of the present invention. The configuration of a lathe 60 with a workpiece supply / recovery device in FIG. 12 includes the relay chuck 18 and moves in the X-axis direction and the Z-axis direction as a whole together with the elevating means 62 supported by the arm 61, and is upright. The arm 61 can be moved up and down by the lifting / lowering means 62, and the relay chuck 18 provided on the arm 61 moves together with the lifting / lowering means 62 in the X-axis direction and the Z-axis direction, so that the arm 61 is provided. The relay chuck 18 is configured to be able to move a gap between the pallets placed on the pallet support shelf 64 in a horizontal plane. With this configuration, the movement guide surfaces 65a and 65b in the horizontal plane can be formed on the frame 25, which can increase the rigidity, so that positioning with high accuracy is possible.

  As described above, the machine tool with the workpiece supply and recovery device according to the present invention can be installed only with the floor area of the machine tool without additional space, and a large pallet can be used. Since the frequency is low and a plurality of pallets can be used, it can be advantageously used for manufacturing processed workpieces that require sorting. Moreover, the machine tool with a workpiece supply and recovery device of the present invention supports a large number of unprocessed workpieces without changing the pallet (or extremely low pallet replacement frequency) by supporting more pallets on the pallet support shelf. Can be processed).

It is a perspective view which shows the structural example of the machine tool with the workpiece | work supply collection | recovery apparatus of this invention. FIG. 2 is a partially cutaway side view of the lathe 10 with a workpiece supply and recovery device in FIG. 1 as viewed from the side opposite to the workpiece transfer mechanism 17 side. However, the arm 19 is drawn in a lowered state, and the lifting / lowering means 20 that supports the arm 19 is drawn in a state in which it is moved toward the tip of the spindle 12 of the lathe 14. FIG. 2 is a partially cutaway front view of the machine tool with a workpiece supply / recovery device of FIG. 1 as viewed from the front end side of a spindle 12 of a lathe 14. However, the arm 19 is drawn in a lowered state, and the lifting / lowering means 20 that supports the arm 19 is drawn in a state in which it is moved toward the tip of the spindle 12 of the lathe 14. Further, the description of the chuck pair 20, the second lifting / lowering means 22, and the tool post 13 disposed above the spindle chuck 11 of the spindle 12 is omitted. It is a perspective view which shows the structure of the pallet 15c supported by the pallet support shelf 16 of the lathe 10 with a workpiece | work supply collection | recovery apparatus of FIG. It is a figure which shows the state which advanced the arm 19 of the lathe 10 with a workpiece | work supply collection | recovery apparatus shown in FIG. It is a figure which shows the state which has arrange | positioned the relay chuck | zipper 18 of the lathe 10 with a workpiece | work supply collection apparatus shown in FIG. 2 horizontally. It is a figure explaining the mechanism which rotates the relay chuck | zipper 18 with which the arm 19 of the lathe 10 with a workpiece | work supply collection | recovery apparatus of FIG. 1 is provided. It is a figure which shows the procedure of the delivery of the workpiece | work of the relay chuck 18 with which the arm 19 of the lathe 10 with a workpiece | work supply collection | recovery apparatus of FIG. It is a figure which shows the state which lowered | hung the chuck | zipper pair 21 of the lathe 10 with a workpiece | work supply collection | recovery apparatus shown in FIG. It is a figure which shows the procedure of the delivery of the workpiece | work of the chuck | zipper pair 21 of the lathe 10 with a workpiece | work supply collection | recovery apparatus of FIG. 1, and the spindle chuck | zipper 11 of the spindle 12 of the lathe 14. FIG. It is a perspective view which shows another structural example of the machine tool with the workpiece | work supply collection | recovery apparatus of this invention. It is a perspective view which shows another structural example of the machine tool with the workpiece | work supply collection | recovery apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lathe with workpiece supply collection device 11 Spindle chuck 12 Spindle 13 Tool post 14 Lathe 15a, 15b, 15c Pallet 16 Pallet support shelf 17 Work transfer mechanism 18 Relay chuck 19 Arm 20 Lifting means 21 Chuck pair 21a Supply chuck 21b Recovery chuck 22 Second 2 lifting / lowering means 23a Unprocessed workpiece 23b Processed workpiece 24 Base (bed)
25 frame 26 frame 26a frame extension 27 recess 30 forward / backward moving means 31a, 31b, 31c motor 32 arm support material 33b, 33c guide rail 34 fixing tool 35 mounting member 36 pivot 37 coil spring 37a, 37b end of coil spring 38 fixed cam 39 Engagement member 41 Motor 44 Work tool (Bite)
DESCRIPTION OF SYMBOLS 50 Lathe with workpiece supply collection device 51 Passage 52 Pallet support shelf 60 Lathe with workpiece supply collection device 61 Arm 62 Lifting means 63 Arm 64 Pallet support shelf 65a, 65b Guide surface

Claims (3)

  A machine tool including a rotatable spindle having a spindle chuck for gripping a workpiece at the tip and a tool base to which a workpiece processing tool can be attached, and a plurality of pieces arranged above the spindle table of the machine tool A pallet support shelf for supporting the pallet and an unprocessed work housed in the pallet are taken out and supplied to the spindle chuck, and the processed work is collected from the spindle chuck and returned to a predetermined position on the pallet. A machine tool with a workpiece supply / recovery device configured with a workpiece supply / recovery device comprising a workpiece transfer mechanism, wherein the pallet support shelf supports a plurality of pallets placed in a vertical direction with a predetermined gap. The work transport mechanism has a structure and has a relay chuck capable of gripping a work, and enters a gap between a plurality of pallets supported by the pallet support shelf. Out, the work supplying and collecting apparatus with a machine tool characterized by having a configuration including at least the plurality of pallets all arm moving means movable in the horizontal plane and the lift direction relay chuck can access the work.   Arm moving means having an arm that can move into and out of a gap between a plurality of pallets supported by a pallet support shelf, wherein the work transport mechanism includes a relay chuck capable of gripping the work, and which can move in a horizontal plane and in a vertical direction. In addition, a supply chuck that receives an unmachined workpiece from the relay chuck of the arm moving means and supplies the workpiece to the spindle chuck, a workpiece that has been machined from the spindle chuck, and receives the machined workpiece from the relay chuck of the arm. A second lifting / lowering that enables the pair of chucks including the recovery chuck to be returned to and the lifting / lowering of the pair of chucks between the workpiece transfer position with the relay chuck of the arm and the workpiece supply position of the spindle chuck. The machine tool with the workpiece supply and recovery device according to claim 1, further comprising: means.   The workpiece inserted into the pallet has a vertical longitudinal direction, the spindle longitudinal direction is horizontally arranged, and the arm chuck rotates 90 degrees so that the vertical position or horizontal position can be taken. The machine tool with a workpiece supply and recovery device according to claim 1 or 2, wherein the machine tool is attached to the arm in a possible manner.

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