JPH0713959Y2 - Grinding machine self-revolution movement device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a self-revolving motion device for revolving a carrier disk supporting a workpiece or a grinding plate such as a grindstone while rotating on a grinding machine. Is.

(Prior art and its problems) Conventionally, a device for revolving a carrier disc supporting a workpiece or a grinding plate such as a grindstone while revolving is disclosed in, for example, Japanese Utility Model Publication No. 58-28759 and Japanese Utility Model Publication No. 61-95865. It was as disclosed. That is, a hollow rotary shaft having a through hole along the axial direction formed eccentrically and rotatably supported by a first bearing, and a through hole of the first hollow rotary shaft through a second bearing. And a rotary shaft that is rotatably fitted in the rotary shaft. The hollow rotary shaft and the rotary shaft are rotated to rotate the carrier disk or the grinding plate concentrically attached to the rotary shaft. It revolves around the earth.

However, in such a conventional apparatus, although the revolution speed and the revolution speed can be appropriately changed, the revolution radius cannot be changed. Therefore, when the size of the work is changed, the revolution radius is changed according to the size of the work. I can't
There is an inconvenience that grinding cannot be performed satisfactorily and efficiently.

(Means for Solving the Problems) In order to solve the above problems, the self-revolving motion device for a grinding machine of the present invention has a through hole along an axial direction formed eccentrically and is rotated by a first bearing. A rotatably supported first rotating shaft and a second rotating shaft eccentrically formed with a through hole extending in the axial direction and rotatably fitted into the through hole of the first rotating shaft. A third rotary shaft rotatably fitted into the through hole of the second rotary shaft via a second bearing, and a first rotary drive for rotating the first rotary shaft. A device, a second rotation drive device for rotating the third rotation shaft, a revolution radius adjusting device for rotating the second rotation shaft relative to the first rotation shaft, First axis of rotation and second
And a lock device that releasably connects the rotation shaft of
A carrier disk or a grinding plate for supporting the work is used as the third disk.
It is attached concentrically to the rotating shaft of.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

FIG. 2 is a plan view of a surface grinder adopting a self-revolving motion device according to an embodiment of the present invention, and FIG. 3 is a front view of the same. A machine body 1 includes a pair of vertical rotary spindles 2 And rotation spindle 3
Are rotatably supported, and the rotary support shaft 2 and the rotary support shaft 3 are aligned on the same axis, and a rotary support shaft drive device (not shown) is respectively provided via a belt transmission mechanism.
Is linked to. A flange 4 and a flange 5 are formed at opposite ends of the rotary support shaft 2 and the rotary support shaft 3, respectively, and a grindstone 6 and a grindstone 7 are fixed to the flange 4 and the flange 5, respectively. And the grindstone 7 face each other with a grinding interval. A grinding fluid supply passage 8 is formed in the upper rotary spindle 2.
The grinding fluid is supplied to the portion between the grindstones. The position of the rotation support shaft 2 and the rotation support shaft 3 can be adjusted in the vertical direction by a position adjustment handle 9 and a position adjustment handle 10.

A horizontal carrier disk is to the right of the grinding wheels 6 and 7.
11 is arranged, and this carrier disk 11 is attached to a vertical third rotating shaft 12 and is driven by a self-revolving motion device 13 so that the rotation and the revolution are properly combined and interlocked to rotate between the grindstones. While passing through. The carrier disc
Although not shown, 11 has a plurality of work-holding pocket portions that are circumferentially spaced from each other, and hold the work in the pocket portions to supply the work between the grindstones.

The grindstone 6, the grindstone 7, a part of the rotary support shaft 2 and the rotary support shaft 3, and a part of the carrier disk 11 are housed in a box-shaped grindstone guard 14. It is fixed to the main body 1. The whetstone guard 14 is provided with an L-shaped inspection door 15 extending from the front wall to the left wall. The inspection door 15 is supported by the whetstone guard 14 via a hinge so as to be openable and closable. It can be opened to the left as shown.

The self-revolving exercise device 13 has a structure as shown in FIG. That is, the first rotating shaft 17 is loosely fitted to the inner peripheral side of the tubular member 18 fixed to the machine body 1, and the plurality of first bearings are provided.
It is supported via 19 so as to be rotatable around the vertical axis.
A through hole along the axial direction is eccentrically formed in the first rotary shaft 17, and a second rotary shaft 21 is rotatably fitted around the vertical shaft center in the through hole. . Second rotation axis
A through hole along the axial direction is eccentrically formed in the through hole 21, and the third rotating shaft 12 is loosely fitted in the through hole. The third rotating shaft 12 has a plurality of second bearings 23. It is rotatably supported around the vertical axis through.

The first rotary shaft 17 is rotationally driven by a first rotary drive device 24. That is, the gear 25 is fitted and fixed to the lower end of the outer peripheral surface of the first rotating shaft 17, and the gear 25
Is meshed with a gear 28 fixedly fitted to the outer periphery of a power transmission shaft 27 which is rotatably supported around a vertical axis by a plurality of bearings 26 fixed to the machine body 1. A pulley 29 is fitted and fixed to the lower end portion of the outer peripheral surface of the power transmission shaft 27, and the pulley 29 is rotationally driven by an electric motor (not shown) via a belt (not shown). Therefore, the turning force transmitted to the pulley 29 is transmitted to the first rotary shaft 17 via the power transmission shaft 27, the gear 28, and the gear 25.

The third rotary shaft 12 is rotationally driven by a second rotary drive device 31. That is, the lower end of the third rotating shaft 12 is connected to the upper end of the power transmission shaft 33 via the universal joint 32, and the lower end of the power transmission shaft 33 is connected to the power transmission shaft 33 via the universal joint 34. It is connected to the upper end of 35. The power transmission shaft 35 is used for the machine body 1
It is rotatably supported around a vertical shaft center by a plurality of bearings 36 fixed to a gear 37, and a gear 37 is fitted and fixed to an intermediate portion of the outer peripheral surface. The gear 37 is rotationally driven by an electric motor (not shown). Mesh with the gear 38. Therefore, the turning force transmitted to the gear 38 is transmitted to the third rotary shaft 12 via the gear 37, the power transmission shaft 35, the universal joint 34, the power transmission shaft 33, and the universal joint 32.

A disc-shaped disc receiver 41 is fixed to the upper end of the third rotating shaft 12 by a plurality of bolts 40.
On the upper side of 41, a disc-shaped disc retainer with multiple bolts 42
43 is fixed. The carrier disc 11 is held between the disc receiver 41 and the disc retainer 43, and
The second rotating shaft 21, which is fixed concentrically with the rotating shaft 12, is rotated relative to the first rotating shaft 17 by a revolution radius adjusting device 45. That is, the first rotary shaft 17 is formed with a hole extending in a direction orthogonal to the axial direction, and the worm 47 is rotatably supported around the horizontal axis by a plurality of bearings 46 in the hole. Has been done. The worm 47 meshes with a worm wheel 48 formed on the outer peripheral surface of the intermediate portion of the second rotary shaft 21, and therefore, by rotating the worm 47 with an appropriate tool or the like, The rotary shaft 21 of 2 rotates.

The second rotary shaft 21 is connected to the first rotary shaft 17 by a lock device 50. That is, the first rotating shaft 17
A hole extending along the direction orthogonal to the axial direction is formed below the hole of the revolution radius adjusting device 45, and an arc contacting the outer peripheral surface of the second rotating shaft 21 is formed in this hole. A lock member 51 and a lock member 52 each having a surface are arranged. A single bolt 53 is inserted through the lock member 51 and the lock member 52, and the bolt 53 is screwed into the lock member 52. Therefore, by tightening the bolt 53 with an appropriate tool, the lock member
51 and the lock member 52 are close to each other, the second rotating shaft
A pressing force acts on the outer peripheral surface of 21, and the pressing force and its reaction force integrate the first rotating shaft 17, the second rotating shaft 21, the lock member 51, and the lock member 52, The relative rotation between the first rotary shaft 17 and the second rotary shaft 21 is blocked.

Next, the operation will be described. As the first pattern of grinding,
Only the first rotating shaft 17 is rotated without rotating the third rotating shaft 12. As a result, the carrier disk 11 does not revolve but only revolves, and the work attached to the carrier disk 11 draws a circular locus such as the one-dot chain line 55 at the work center, as shown in FIG. The solid line 56 makes a circular motion indicating a progress, and moves within the area surrounded by the chain double-dashed line 57. At this time, since the grindstone 6 and the grindstone 7 are rotating, the workpiece comes into contact with the entire grinding surface of the grindstone 6 and the grindstone 7, and is efficiently and favorably ground.

As the second pattern of grinding, the first rotating shaft 12 is continuously reciprocally oscillated within the range of the angle α while the first rotating shaft 12 is rotated.
Rotate 17. As a result, the carrier disk 11 revolves continuously while reciprocating in the range of the angle α, and the carrier disk 11 revolves.
As shown in FIG. 7, the work attached to 11 draws a locus of a curved line with the center of the work as shown by a dashed line 55, and a solid line 56
The robot moves in the area surrounded by the chain double-dashed line 57 by performing a motion that indicates a halfway point. At this time, since the grindstone 6 and the grindstone 7 are rotating, the workpiece comes into contact with the entire grinding surface of the grindstone 6 and the grindstone 7, and is efficiently and favorably ground. According to this second pattern, the grindstone surface is used in a wider range than that of the first pattern, so that the accuracy is improved.

As a third pattern of grinding, the first rotating shaft 17 is rotated while slowly rotating the third rotating shaft 12.
As a result, the carrier disk 11 revolves slowly while revolving, and the work attached to the carrier disk 11 draws a curved locus such as the one-dot chain line 55 at the work center, as shown in FIG. By 56, exercise is performed to show the progress, and the robot moves as shown. At this time, since the grindstone 6 and the grindstone 7 are rotating, the workpiece comes into contact with the entire grinding surface of the grindstone 6 and the grindstone 7, and is efficiently and favorably ground. According to the third pattern, efficiency is improved and productivity is improved as compared with the first and second patterns.

Here, when changing the size of the workpiece to be ground, the bolt 53 of the lock device 50 is loosened to release the lock, and the worm 47 of the revolution radius adjustment device 45 is rotated to rotate the second rotary shaft 21, After changing the distance between the axis of the first rotating shaft 17 and the axis of the third rotating shaft 12, the bolt 53 of the locking device 50 is changed.
Tighten and lock. As a result, the revolution radius of the carrier disk 11 changes, and a revolution radius suitable for the work can be obtained. That is, when the work is large, the revolution radius is made small, and conversely, when the work is small, the revolution radius is made large, so that the entire grinding surface of the grindstone 6 and the grindstone 7 can be ground, and the grinding can be performed efficiently and satisfactorily. Can be done.

(Other Embodiment) In the above embodiment, the carrier disk 11 is moved by the third rotating shaft 12, but the grinding plate such as a grindstone may be moved by the third rotating shaft 12. Good.

Further, the specific configurations of the first rotation drive device 24, the second rotation drive device 31, the revolution radius adjustment device 45, and the lock device 50 are as follows.
The present invention is not limited to the configuration of the above embodiment, and may be appropriately determined according to various design conditions.

(Effect of the Invention) As described above, according to the present invention, the through hole along the axial direction is formed eccentrically, and the first rotating shaft rotatably supported by the first bearing and the axial center. A second rotating shaft eccentrically formed along the direction and rotatably fitted in the through hole of the first rotating shaft; and a second rotating shaft formed in the through hole of the second rotating shaft. Third rotary shaft that is rotatably fitted and inserted through the bearing, a first rotary drive device that rotates the first rotary shaft, and a second rotary drive device that rotates the third rotary shaft. And a revolution radius adjusting device for rotating the second rotating shaft relative to the first rotating shaft.
Since a lock device for releasably connecting the first rotary shaft and the second rotary shaft is provided, and a carrier disk or a grinding plate for supporting a work is concentrically attached to the third rotary shaft. By releasing the lock device and operating the revolution radius adjusting device, the revolution radius can be changed, and therefore the revolution radius suitable for the size of the work can be arbitrarily selected.
Grinding can be performed using the entire grinding surface of the grinding plate such as a grindstone, and the grinding can be performed efficiently and satisfactorily.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a self-revolving motion device according to an embodiment of the present invention, FIG. 2 is a plan view of a surface grinder adopting the self-revolution motion device, and FIG. 3 is a front view of the same. FIG. 4 is a cross-sectional plan view of the revolution radius adjusting device, FIG. 5 is a cross-sectional plan view of the locking device, and FIGS. 6 to 8 are operation explanatory diagrams of the self-revolution motion device. 11 …… Carrier disk, 12 …… Third rotating shaft, 13 …… Self
Orbital movement device, 17 ... First rotation shaft, 19 ... First bearing, 21 ... Second rotation shaft, 23 ... Second bearing, 24 ... First rotation drive device, 31 ... … Second rotary drive, 45 ……
Orbiting radius adjusting device, 50 ...... Locking device

Claims (1)

[Scope of utility model registration request] 1. A first rotating shaft, which is formed with an eccentric through hole along the axial direction and is rotatably supported by a first bearing, and an through hole along the axial direction which is formed eccentrically. A second rotary shaft rotatably fitted into the through hole of the first rotary shaft, and a second rotary shaft rotatably fitted into the through hole of the second rotary shaft via a second bearing. A third rotation shaft, a first rotation drive device that rotates the first rotation shaft, a second rotation drive device that rotates the third rotation shaft, and a second rotation drive device. A revolution radius adjusting device for rotating the shaft relative to the first rotation shaft, the first rotation shaft and the second rotation shaft.
And a lock device that releasably connects the rotation shaft of
A rotating / revolving motion device for a grinding machine, wherein a carrier disk or a grinding plate for supporting a work is concentrically attached to the third rotating shaft.