JPH0511950Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a workpiece attachment/detachment device that is directly attached to an NC processing machine such as an NC lathe that is equipped with an NC device.

Conventional technology The workpiece loading/unloading device of conventional NC processing machines is
It was provided separately from the processing machine, and there were those shown in Figs. 4 and 5. In the illustrated conventional example, as shown in FIG. 4, there is a traverse device 30 for moving the workpiece in the Z direction, and as shown in FIG.
It consists of a loader arm lifting device 31 that moves the workpiece in the X direction, and each moving device independently uses a motor or a hydraulic or pneumatic cylinder device as a driving device.

Problems to be solved by the invention The workpiece loading/unloading device of the conventional NC processing machine mentioned above requires an independent drive device for each.
As a result, the entire workpiece loading/unloading device becomes large, and the workpiece loading/unloading device and the processing machine need to be installed separately, which requires a large amount of installation space, and the workpiece loading/unloading device gets in the way when changing tools on the processing machine. There was a problem that this led to a decrease in work efficiency.

Means to Solve the Problems This invention focuses on the fact that the processing machine has an NC device, and the processing of the workpiece and the loading and unloading of the workpiece occur at different times, so there is no overlap in time.
This device uses the movement of the tool slider of the processing machine in the X-axis and Z-axis directions as the drive device for the workpiece loading/unloading device. NC with a tool slider device equipped with an X-axis tool slider that can move in the direction perpendicular to the direction (X-axis direction)
In the processing machine, a loader arm unit and an unloader arm unit are respectively attached to both sides of the tool post on the X-axis tool slider in parallel in the Z-axis direction via arm connection shifter devices, and both arm units are connected to each other in parallel with each other in the Z-axis direction. a shifter device for connecting the arm; an arm shaft supported so as to be shiftable and rotatable in the Z-axis direction by the shifter device for connecting the arm; a hand attached to the workpiece side of the arm shaft; A rack is mounted in the X-axis direction at a position on the Z-axis tool slider that can mesh with each of the pinions, and the hand is mounted in a direction perpendicular to the arm axis. A gripping body is attached to the tip of the hand, and the gripping body of the loader arm unit is located between a loading point outside the processing machine and a chuck position.
The gripping body of the unloader arm unit can be moved and rotated between the chuck position and an unloading point outside the processing machine, and both arm units are not provided with independent drive devices. This makes it possible to solve the above-mentioned problems.

After the Z-axis tool slider and the X-axis tool slider are finished machining the workpiece with the tools, they are moved to a predetermined connection point, and at this position, the two arms are attached to the Z-axis tool slider by the shifter device for connecting both arms. When the rack and pinions of both arm units are meshed and connected, and the X-axis tool slider is then moved in the X-axis direction within a predetermined range, the grip of the loader arm unit moves between the loading point and the chuck position. The gripping body of the unloader arm unit is simultaneously rotated and moved between the chuck position and the unloading point.

When both grippers are at the loading point and the chuck position, the Z-axis tool slider is moved in the Z-axis direction to approach the chuck, and the unprocessed workpiece is at the loading point and the processed workpiece is at the chuck position, respectively. and make them grasp it. Next, the Z-axis tool slider is moved in the Z-axis direction to separate from the chuck, and the X-axis tool slider is rotated to move the gripping body of the loading arm unit to the chuck position and the gripping body of the unloading arm unit to the unloading point. Move it in the X-axis direction like this,
As before, the Z-axis tool slider is moved in the Z-axis direction to approach the chuck, and the unprocessed workpiece gripped by the gripping body of the loading arm unit is moved to the chuck, and the processed workpiece gripped by the gripping body of the unloading arm unit is moved to the chuck. at the unloading point.

After transferring the workpiece, move the Z-axis tool slider and the X-axis tool slider to the above-mentioned connection point, and at this position, the shifter device for connecting both arms releases the meshing connection between the rack and pinion, and the machine starts the next machining process. The positions of both grippers during the machining process are such that they do not come into contact with the tool post.

The movements of the X-axis tool slider and Z-axis tool slider, the movement of the arm coupling shifter device, and the opening and closing of the gripping body are performed by a programmed connection signal from the NC device.

Embodiments The configuration of the present invention will be explained below using embodiments shown in the drawings. The processing machine of the embodiment has a Z-axis tool slider 3 that is vertically movable up and down in the axial direction of the workpiece 1 (double arrow Z direction) via a Z-axis drive device 2. X that can be horizontally moved in the (double arrow X direction) via the X-axis drive device 4
This is an NC vertical lathe having a tool slide device equipped with an axis tool slider 5, and a tool post 7 is attached on the vertical surface of the X-axis tool slider 5. A first one is placed on both sides of the tool post 7 at a position that does not interfere with the machining process of the workpiece 1.
As shown in the figure, a loader arm unit 8 and an unloader arm unit 9 are mounted on the X-axis tool slider 5 on the left and right in parallel to the Z-axis direction in substantially symmetrical positions via arm coupling shifter devices 10 and 11, respectively. ing.

Both the arm units 8 and 9 have the same shape, and the arm coupling shifter device 10 or 11
, an arm shaft 12 or 13 which is shiftable and rotatably supported in the Z-axis direction by the arm connecting shifter device 10 or 11, and an arm shaft 12 or 13 mounted on the lower end of the arm shaft 12 or 13 on the workpiece 1 side. the hand 14 or 15, and the arm shaft 1
A pinion 16 or 1 mounted on the upper end of the hand 2 or 13 opposite to the hand 14 or 15.
7 and more. On the Z-axis tool slider 3, a rack 18 that can mesh with the pinion 16 and a rack 19 that can mesh with the pinion 17 are mounted horizontally on the left and right, respectively. Further, the hand 14 extends in a direction perpendicular to the arm shaft 12, and the hand 15 extends in a direction perpendicular to the arm shaft 13. A gripping body 20 is provided at the tip of the hand 14, and a gripping body is provided at the tip of the hand 15. 21 is installed.

As shown in FIG.
The gripping body 21 is movable and rotatable between the chuck position 23 and an unloading point 24 outside the vertical lathe in a semi-elliptical shape B. The arm units 8 and 9 are movable and rotatable along the trajectory shown in FIG.

Both arm units 8 and 9 are driven as follows. Workpiece 1 held by chuck 25
During processing, hand 1 of both arm units 8 and 9
4 and 15 are held in positions facing forward, as shown, so as not to interfere with machining or the like.
After completing machining of the workpiece 1, the Z-axis tool slider 3 and the X-axis tool slider 5 are moved to the predetermined connection point positions shown in FIGS. 1 and 3 by the Z-axis drive device 2 and the X-axis drive device 4, respectively. to move it. At this position, the arm connection shifter device 10,
11 raises the pinions 16 and 17, and engages and connects the pinion 16 to the rack 18 and the pinion 17 to the rack 19, respectively. Next, when the X-axis tool slider 5 is moved a predetermined distance to the left in FIG. Body 21 moves to chuck position 23. At this position, the Z-axis tool slider 3 is lowered, the gripper 20 grips the unprocessed work 16, and the gripper 21 grips the processed work 19.

After gripping both the gripping bodies 20 and 21, the Z-axis tool slider 3 is raised and the X-axis tool slider 5 is moved to the right by a predetermined distance, and the gripping body 20 moves to the chuck position while tracing a semi-elliptical trajectory A. 23, the gripping body 21 moves to the unloading point 24 while drawing a semi-elliptical trajectory B.
At this position, the Z-axis tool slider 3 is lowered and the workpiece 1b is gripped onto the chuck 25 and the workpiece 1
The transfer of a to the position shown in 1c is completed.

Furthermore, the Z-axis tool slider 3 and the X-axis tool slider 5 are returned to the illustrated positions, the arm coupling shifter devices 10 and 11 are activated, and the pinion 16 and the rack 18 are disengaged, and the pinion 17 and the rack 19 are disengaged. Move on to the next processing step.

As mentioned above, the movement and rotation of the loader arm unit 8 and unloader arm unit 9 is caused by the movement of the Z-axis tool slider 3 and the X-axis tool slider 5, and therefore by the movement of the Z-axis tool slider 3 and the X-axis tool slider 5.
This can be done by

In the embodiment, the loader arm unit is provided on the left and the unloader arm unit is provided on the right, but the positions of the loader arm unit and unloader arm unit may be reversed, or a single arm unit may be used for both loading and unloading. Of course you can.

Effects of the invention As mentioned above, the workpiece loading and unloading device of the present invention does not require an independent drive device because the processing of the workpiece and the loading and unloading of the workpiece occur at different times. can be shared, can be mounted on the tool slider, requires a small installation space, does not interfere with work during machining or tool exchange, and is equipped with an NC device, so the X-axis of the tool slider , movement in the Z-axis direction, driving the arm connection shifter device, work on the gripping body, etc. can be performed precisely according to the program using the NC device, which has various effects that participate in the automation of the entire process of attaching and detaching the workpiece and machining. .

[Brief explanation of drawings]

FIG. 1 is a front view of the embodiment, FIG. 2 is a schematic plan view of the same, FIG. 3 is a top side view of the same, and FIGS. 4 and 5 are schematic views of the conventional example. 1... Workpiece, 3... Z-axis tool slider, 5
...X-axis tool slider, 6... Tool slide device, 7... Tool post, 8... Loader arm unit, 9... Unloader arm unit, 1
0,11... Shifter device for arm connection, 12,1
3...Arm axis, 14, 15...Hand, 16,
17...Pinion, 18,19...Rack, 2
0, 21...Gripper, 22...Loading point, 23...Chuck position, 24...Unloading point.

Claims (1)

[Scope of utility model registration request] Z that can move in the axial direction of the workpiece (Z-axis direction)
In an NC processing machine having a tool slide device in which an X-axis tool slider that is movable in a direction perpendicular to the workpiece axis (X-axis direction) is installed on an axis tool slider, the tool post on both sides of the X-axis tool slider is A loader arm unit and an unloader arm unit are mounted in parallel to the Z-axis direction via arm connection shifter devices, and both of the arm units are connected to the Z-axis by the arm connection shift device and the arm connection shifter device, respectively.
It consists of an arm shaft supported so as to be shiftable and rotatable in the axial direction, a hand mounted on the work side of the arm shaft, and a pinion mounted on the opposite side of the arm shaft to the hand; A rack is mounted in the X-axis direction on the Z-axis tool slider at a position where it can mesh with each of the pinions, the hand extends in a direction perpendicular to the arm axis, and a gripping body is mounted on the tip of the hand, The gripping body of the loader arm unit moves and rotates between the loading point outside the processing machine and the chuck position, and the gripping body of the unloader arm unit moves and rotates between the chuck position and the unloading point outside the processing machine. 1. A workpiece attachment/detachment device for an NC processing machine, characterized in that both arm units are not provided with independent drive devices.