JPS6216275Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a gyroscope finishing machine for the purpose of simplifying the structure of a device for attaching and detaching a workpiece.

Conventional workpiece chuck devices, such as collect chucks, have a plurality of split ends, a threaded rear end, and a long cylindrical handle inserted from the rear end of a hollow shaft, or the rear end is connected to a fluid It is connected to the piston rod of the pressure cylinder and pulled into the hollow shaft to grip and fix the workpiece.One drive mechanism is required for one collection chuck, and the overall structure is relatively simple. It tends to be complicated and therefore expensive.

However, this idea utilized the restoring force of a spring to pull the chuck into the hollow main shaft when grasping the workpiece, and used a hydraulic cylinder installed at a predetermined position to release the workpiece. , it is no longer necessary to attach a drive mechanism to each chuck as in the past, and the structure is extremely simple.

That is, an embodiment of this invention will be described below with reference to the accompanying drawings. This idea was based on a gyroscope polishing machine equipped with a device that sequentially raises or lowers a predetermined axis during machining (for example, Japanese Patent Laid-Open No. 49-111299
No.). In FIGS. 1 and 2, the main parts of the gyroscope finishing machine are housed within a frame consisting of several columns 31 installed upright on the bottom plate 15 and an upper support plate 32 supported by the columns. A polishing tank is rotatably installed on the bottom plate, and a center column 30 vertically installed from the center of the polishing tank through the upper support plate supports a plurality of polishing units 27 that hold the workpiece shaft 2. It is a rotating shaft for sequentially revolving the work piece to the workpiece attachment/detachment position, and above the center column 30 is a bearing 2 fixed to the upper support plate 32.
5, and below the center column 30 is a polishing tank 44.
It is rotatably supported by a bearing 26 provided at the upper end of a rotating shaft 29. A disc-shaped motor board 10 and a disc-shaped unit board 6 are fixed horizontally at a predetermined interval vertically to the middle part of the center column 30.
A geared motor 8 with a brake is fixed vertically on the motor board 10, and the unit board 6
A plurality of polishing units 27 are fixed on the top.

The polishing unit 27 has a plurality of units (in FIG. 1, the center of the installation position is indicated by a chain line 48 assuming a case of 10 units, and two units are shown in FIG. ), the workpiece axis 2 is installed vertically. Each of the workpiece shafts 2 is mounted in a slide shaft 3 so as to be movable up and down, and a collection chuck 1 is fixed to the lower end thereof, and each of the slide shafts 3 is mounted in a rotary shaft 4 so as to be movable up and down. The rotating shafts 4 are rotatably supported within bearings 5, respectively. The workpiece shaft 2 passes through the inside of the slide shaft 3 and has a collar 11 fixed to its upper end, and a spring is attached to the workpiece shaft between the collar 11 and a guide 49 fixed inside the upper end of the slide shaft 3. 1
3 is interposed. This spring 13 has the function of constantly pushing the workpiece shaft 2 upwardly with respect to the slide shaft 3.

Therefore, when the workpiece shaft 2 rises, the collection chuck 1 is drawn into the slide shaft 3 and is pressed against the inner wall of the slide shaft 3, closing the collection chuck 1, so that the workpiece is moved into the collection chuck 1.
The rotation of the slide shaft 3 is transmitted to the collector chuck 1. Further, when the workpiece shaft 2 is lowered against the spring 13, the collection chuck 1 is separated from the inner wall of the slide shaft 3, the chuck opens, and the workpiece is released.

A support member 50 is provided on one side of the upper support plate 32.
A support stand 16 is provided via. On the support stand 16 are a fluid pressure cylinder 17 and bearings 18a, 18.
b is placed vertically. The tip of the piston rod of the fluid pressure cylinder 17 and the bearing 18
Slide shafts 19a, 19 sliding inside a, 18b
A support plate 21 is suspended horizontally from the lower end of b. A hydraulic cylinder 20 is installed vertically on the support plate 21, and a hammer 22 for hitting the collar 11 of the workpiece shaft 2 is attached to the tip of the piston rod. Further, at the bottom of the support plate 21, two sets of support arms 23a, 23b are provided for lifting the slide shaft 3.
23c, 23d are suspended, and support arms 23a,
A collar 2 fixed to the outer side of the upper end of the slide shaft 3 is attached to the lower end facing surface of each of 23b, 23c, and 23d.
A protrusion 51 that engages with the annular groove 24a of No. 4 is provided. A pulley 34 is dry-fixed to the upper outer side of the rotating shaft 4 by a key 28, and a belt 7 (or a chain may be used) is attached to a pulley 35 fixed to the shaft of the motor 8 and the pulley 34. There is. Further, clutches 12 and 14 are fixed to the lower end surface of the collar 24 and the upper end surface of the pulley 34, respectively, for engaging each other. As a result, the rotation of the motor 8 is controlled by the pulley 35, the belt 7, the pulley 34, the clutch 14, and the clutch 1.
2. It is transmitted to the workpiece 52 via the slide shaft 3 and the collect chuck 1.

As an example, a known Geneva gear is used to intermittently rotate the plurality of polishing units 27 around the central column 30. A polishing tank rotating shaft 29 is installed vertically on the bottom plate 15, and a polishing tank 44 is fixed to the polishing tank rotating shaft, and is rotated by a motor 47 via a transmission 46. A chain wheel 45 (or a pulley may be used) is fixed to the polishing tank rotating shaft 29,
The chain wheel 45 is interlocked with a chain wheel 53 fixed to the output shaft of the transmission 46 by a chain 54.
6 receives input from a motor 47 via pulleys 55, 56 and a belt 57.

Based on the structure described above, the operation of the device of this invention will be explained as follows. During the operation, the polishing tank 44 charged with the abrasive material and, if necessary, a compound solution, constantly rotates, and most of the workpiece shaft 2 is lowered with the workpiece attached and rotates within the abrasive material.
Together with the rotation of the polishing tank 44, the surface of the workpiece is polished. In this case, pressure fluid is introduced above the hydraulic cylinder 17 and the support plate 21 is lowered. When the polishing unit 27 comes to the workpiece loading/unloading position, the slide shaft 3 is sensed by a proximity switch (not shown), and the brake of the motor 8 is activated to stop the rotation (or it can continue to rotate). . At this time, support arms 23a, 23b
is lowered and matches the height of the annular groove 24a of the collar 24 of the slide shaft 3, so the collar 24 of the slide shaft 3 that has pivoted engages between the stationary support arms 23a and 23b. becomes. Next, when the pressure fluid on the upper side of the fluid pressure cylinder 17 is discharged and the pressure fluid is introduced into the piston rod side, the support plate 21 and the two slide shafts 3 are
It rises as indicated by the arrow 58 from the position indicated by the chain line 3a, and reaches the position indicated by the solid line in FIG. Next, when pressure fluid is introduced into the upper side of the hydraulic cylinder 20, the hammer 22 descends as shown by the arrow 59, and the workpiece axis 2
Since the collar 11 fixed to the tip of the workpiece is struck, the workpiece shaft 2 is lowered in the same direction against the spring 13, and the collet chuck 1 is also lowered accordingly, releasing the workpiece 52. The workpiece 52 can then be removed. Next, when attaching the workpiece,
While loading the workpiece 52 into the collector chuck 1, the pressure fluid from the upper side of the hydraulic cylinder 20 is discharged and the pressure fluid is introduced to the piston rod side. Then, the hammer 22 will also rise in the same direction, and the restoring force of the spring 13 will cause the workpiece axis to
Then, the collect chuck 1 moves up inside the slide shaft 3, closes the collect chuck with the guidance of the lower end of the slide shaft, and fixes the workpiece 52. Then, by the reverse operation to the above, the support plate 21 is lowered to a predetermined position and processing is started. When the support plate 21 is lowered to a predetermined position and the polishing unit 27 is rotated intermittently, the slide shaft 3 and the collar 24 are rotated, so that the collar 24 is disengaged from the support arms 23a and 23b and the engagement is released to start machining. . This attachment/detachment may be done manually or automatically. Next, although the case of two axes has been described above, there is no limitation on the number of axes. or,
Although the present invention has been described using a collection chuck, other methods of securing the workpiece by retracting the chuck into the hollow shaft may also be used, such as the device shown in FIG. 4. That is, by machining the workpiece shaft 2 as shown by the arrow 64, the chuck pieces 60, 60a open as shown by the arrows 62, 63, respectively, centering on the upper end mounting shafts 61, 61a, and the workpiece shaft 2 By raising as shown by arrow 65,
Since the chuck pieces 60 and 60a close as shown by arrows 65 and 66, respectively, around the mounting shafts 61 and 61a, workpieces can be attached and detached in the same manner as the collector chuck.

As explained above, since a chuck tightening and releasing device is provided at a predetermined position of the gyroscope polishing machine when attaching and detaching a workpiece, the chuck structure of the entire device is extremely simple, and this is highly effective industrially.

In addition, the slide shaft is inserted into a pulley that can be freely hooked to and removed from a rotating device so that it can be raised and lowered, and the lifting device is rotatably connected to the upper end of the slide shaft, and it is lowered to the upper end of the workpiece shaft. Since the hammers are disposed opposite each other, it is possible to arbitrarily rotate the workpiece, and it is also possible to raise and lower the workpiece, as well as to attach and detach it, resulting in a simple structure device.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a device for carrying out this invention, Fig. 2 is a front view thereof, Fig. 3 is an enlarged partially sectional front view of the chucking device of this invention, and Fig. 4 is a plan view of another device of this invention. FIG. 3 is an enlarged partially cross-sectional front view of the embodiment. 1...Collection chuck, 2...Workpiece axis, 3
...Slide shaft, 4...Rotating shaft, 5...Bearing, 6
...Unit board, 7...Belt, 8...Motor, 10...Motor board, 11...Tsuba, 12...
...Clutch, 13...Spring, 14...Clutch, 15...Bottom plate, 16...Support stand, 17...
Fluid pressure cylinder, 18a, 18b...bearing, 1
9a, 19b...Slide shaft, 20...Fluid pressure cylinder, 21...Support plate, 22...Hammer,
23a, 23b, 23c, 23d...support arm, 2
4... Collar, 25, 26... Bearing, 27... Polishing unit, 28... Key, 29... Polishing tank rotating shaft, 30... Center column, 31... Support column, 32... Upper support plate, 34 , 35...Pulley, 44...Polishing tank, 45...Pulley, 46...Transmission device, 4
7... Motor, 48... Chain line, 49... Guide,
50...Support plate, 51...Protrusion, 52...Workpiece, 53...Chain wheel, 54...Chain, 55,5
6... Pulley, 57... Belt, 58, 59,
62, 63, 64, 65, 66...arrow, 60,
60a...chuck piece, 61, 61a...mounting shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Surface processing of the workpiece is performed by rotating the workpiece fixed to the workpiece shaft in a polishing tank charged with abrasive material, and when the workpiece is attached or detached, the workpiece shaft is In a gyroscope finishing machine designed to pull up the bottom plate,
A polishing tank is rotatably installed in a frame consisting of an upper support plate and a support column, and a motor board with a motor fixed between the upper support plate and the polishing tank and a unit board can be rotated with a predetermined spacing above and below. A plurality of polishing units that hold a rotating shaft, a sliding shaft, and a workpiece shaft are installed on the unit board at equal intervals, and a pulley rotated in conjunction with the motor is fixed to the upper outer side of the rotating shaft. At the same time, a collar having an annular groove is fixed to the upper outer side of the slide shaft, which is fitted into the rotation shaft so as to be able to rise and fall, and a clutch that engages and disengages each other is fixed to the upper end surface of the pulley and the lower end surface of the collar. A workpiece shaft is inserted into the slide shaft, and a spring is interposed between the slide shaft and the workpiece shaft to maintain the workpiece shaft in the raised position at all times. a chuck that closes when pressed against the inner wall of the slide shaft and opens when lowered; and an annular groove in the collar of the slide shaft is installed at a workpiece attaching/detaching position on one side of the upper support plate. A gyroscope finishing machine characterized in that a support arm having a protrusion at its tip that engages with the workpiece shaft, and a hammer that pushes down the workpiece shaft are installed so as to be movable up and down. 2. The gyroscope finishing machine according to claim 1, wherein the chuck is a collect chuck.