JPS5944186B2 - Surface grinding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface grinding device such as a lapping device or a polishing device.

In this type of surface grinding device, the internal gear is lowered to a position lower than the lower surface plate in order to load a carrier holding a workpiece or to take out the workpiece that has been ground together with the carrier. is known.

However, in conventional surface grinding equipment, when the internal gear is lowered, the carrier in the non-mounting/unloading position tends to shift due to vibration or other causes, and once that shift occurs, the internal There is a disadvantage that when the 1-tooth gear is raised again, the carrier cannot be meshed with the internal gear as before, and the carrier is lifted up and its meshing position is distorted. Ta.

In view of the above, the present invention aims to prevent the carrier in the non-mounting/detaching position from being displaced when the internal gear is lowered. An engaging piece having teeth similar to those of the internal gear is disposed so as to be movable back and forth, and when the internal gear is lowered, the engaging piece is moved forward and engaged with the carrier, thereby engaging the carrier. Its feature is that it is configured to be held in place by a piece.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figs. 1 and 2 show a double-sided wrapping device, in which 1 is a machine body, and 2 is a support member 3 attached to the machine body 1. 4 is a rotatable sun gear located in the center of the internal gear 2; 5 and 6 are upper and lower surface plates; 7 is the internal gear 2 and the sun gear 4; 8 indicates a workpiece held by the carrier.

The internal gear 2, the sun gear 4, and the lower surface plate 6 include a gear 2b at the lower end of the rotating shaft portions 2a, 4a, and 6a located concentrically;
The lower surface plate 5 is connected to a drive source (not shown) via the base plate 4b and 6b, respectively, and the lower surface plate 5 is suspended from the publication 11 via the mounting plate 9 and the stud 10 fixed thereto, and the publication 11 is suspended from the publication 11 on the support 12. It is configured to be movable up and down by being connected to the rod 15 of the cylinder 14 attached to the arm 13, and a plurality of hooks 16 located in the radial direction are attached to the mounting plate 9 so as to be able to be raised and lowered. hook 16
The hook 16 can be freely engaged and detached from the driver 17 connected to a drive source (not shown) via the gear 1□b at the lower end of the rotating shaft portion 17a.
The structure is such that the upper surface plate can be driven and rotated by engagement with the driver 11. Further, in order to make the internal gear 2 movable up and down, a plurality of guides 19 are installed at equal intervals in the circumferential direction on the lower surface of the annular holder 18 to which the internal gear 2 is fixed. 19 is supported by the support member 3 so as to be vertically slidable, and a ring plate 20 with a flat lower surface is fixed to the lower end of the guide 19 and is located concentrically with the internal gear 2. On the other hand, on the inner wall of the body 1 , a plurality of (3 to 4) cylinders 21 are arranged and fixed at equal intervals along and below the ring plate 20, and each cylinder 2
The upper end of the operating rod 22 in 1 is connected to a rolling element 23 consisting of a roller bearing, a ball bearing, etc. attached thereto.
is brought into contact with the lower surface of the ring plate 20 through the
The internal gear 2 is raised by pushing up the ring plate 20 by the cylinder 21, and the internal gear 2 is lowered using its own weight.

Note that 24 is a latch piece for forcibly pulling down the internal gear 2 when it becomes impossible to lower it due to its own weight for some reason. A loading/unloading section 25 is formed on one side of the fuselage 1 for loading and unloading the carrier 7 with the internal gear 2 lowered. In corresponding positions to the other carriers 7 in the position, there are carriers for holding these carriers 7 that have been disengaged from the internal gear 2 in that position until the internal gear 2 rises again and meshes with them. The holding mechanisms 26 are each provided with a height adjustable by a cylinder 26a.

As is clear from FIGS. 3 to 5, the holding mechanism 26 has a toothed portion 28 similar to that of the internal gear 2 at its tip, and the toothed portion 28 is formed to have the same curvature as the internal gear 2. Engagement piece 27
The engaging piece 27 is connected to the rod 30 of the cylinder 29 so as to be movable back and forth toward the center of the internal gear 2, and the engaging piece 27 is moved forward. In order to match the phase of the tooth portion 28 with the internal gear 2 when meshing with the carrier 7, a large number of positioning pins 32 are implanted at regular intervals on the upper surface of the holder 18 in the internal gear 2. However, on the other hand, the engagement piece 27, which can be finely adjusted laterally as well by the cylinder 31, has a large number of small grooves 33 cut in the front-rear direction into which the pin 32 is fitted.
A pointed guide portion 34 is formed between each of the small grooves 33, 33 to adjust the position of the engaging piece 27 in the left-right direction by means of a pin 32 when the engaging piece 27 advances out of phase. There is.

A sensor 35 for detecting the carrier 7 is provided at a position corresponding to the holding mechanism 26 located in front of the loading/unloading section 25, and when the carrier 7 is loaded/unloaded, the sensor 35 detects each carrier 7. It is constructed so that it can always be stopped at the position shown in FIG.

That is, when the wrapping is completed and the device is temporarily stopped, the sensor 35 is activated and the device is slowly restarted, and when the sensor 35 detects the carrier 7, the device is finally stopped. It's starting to get shut down. If the carrier 7 is in the position detected by the sensor 35 when the device is once stopped, the device is driven again to a position where the next carrier is detected by the sensor 35. When using the wrapping device having the above configuration,
As shown in FIG. 2, the carriers 7 are arranged in a predetermined positional relationship, and the work 8 held by each carrier is wrapped by a known method. In this case, the internal gear 2 is driven and rotated by the support member 3 via the guide 19, and the ring plate 20 at the lower end of the guide also rotates together with it. Upper end rolling element 2
3, they are in a free relationship with respect to the rotation of the internal gear 2. Therefore, even if the cylinder 21 is fixed to the body 1, the internal gear 2 can rotate freely. can do. When the wrapping process is completed, the upper surface plate 5 rises, and at the same time each gear 2, 4 and the surface plate 5
, 6 are stopped, and the carrier 7 is stopped at the position shown in FIG. 2 by the operation of the sensor 35.

Then, as the operating rod 22 is lowered by the cylinder 21, the internal gear 2 is lowered to a position lower than the lower surface plate 6. or manually. At this time, the other carriers 7 in the non-loading position are
It is held in that position by a holding mechanism 26, and this holding is carried out as follows.

That is, when the rotation of the internal gear 2 stops, as shown by the arrow in FIG. The engagement piece 27 is advanced by the cylinder 29, and the pin 32 on the holder 18 fits into the small groove 33 of the engagement piece 27. As a result, the engagement piece 27 is held so that the teeth are in the same phase as the internal gear 2, and in this state, the engagement piece 27 and the internal gear 2 are held together as shown in FIGS. 4 and 5. The engagement pieces 27 are lowered synchronously by the cylinders 21 and 26a, and the engagement pieces 27 mesh with the carrier 7 at the same time as the internal gear 2 separates from the carrier 7. When the engaging piece 27 moves forward with a phase shift, the pin 32 comes into contact with the pointed guide portion 34, but the engaging piece 27
At the same time as the pin 32 starts to move forward, the fine adjustment cylinder 31 is actuated so that the engaging piece 27 can also move in the lateral direction. Therefore, the pin 32 is moved laterally, and the phase is adjusted to a position where the pin 32 fits into the small groove 33.

If the carrier 7 has a large wall thickness, the internal tooth east 2
Once lowered to the position shown in the figure, the engaging piece 27 is advanced to mesh with the carrier 7, and then the internal gear 2 and the engaging piece 2
7 can also be lowered.

When one carrier 7 is removed, the internal tooth space 2 and the engagement piece 27 are pushed up by the cylinders 21 and 26a,
At the same time as the internal gear 2 meshes again with the other carrier 7 in the non-mounted position, the engagement piece 27 is disengaged from the carrier 7, and then the engagement piece 27 is retreated by the cylinder 29 to the initial position.

Then, by driving both gears 2 and 4, the next carrier 7 is sent to the loading/unloading position, and by repeating the above operation, the carrier is removed. In the above example,
Although the horizontal movement of the engaging piece 27 is performed by the cylinder 31, the rod 3 can be moved without using such a cylinder.
It is also possible to connect the engagement piece 27 to the 0 so that it can move laterally. As detailed above, according to the present invention, an engagement piece having teeth similar to those of an internal gear is disposed at a position corresponding to the carrier in the non-mounting/detaching position, so that it can freely move back and forth. When the internal gear is lowered, the engagement piece can reliably hold the carrier so as not to shift its position.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a plan view with the surface plate removed, Fig. 3 is an enlarged view of the main parts in Fig. 1, Fig. 4 and Fig. FIG. 5 is a sectional view and a plan view thereof at the same position as FIG. 3, showing a different operating state. 1... Airframe, 2... Internal gear, 4...
...Sun gear, 7...Carrier, 8...
... Workpiece, 25-... Loading and unloading section. 627...
...Engagement piece, 28...teeth part.

Claims (1)

[Claims] 1 A carrier is meshed with an internal gear and a sun gear that are connected to an appropriate drive source and are rotatable, and a workpiece held by the carrier is ground by a surface plate, in which the internal gear is The internal gear is configured to be movable up and down, and a loading/unloading section is provided on one side of the machine for loading and unloading the carrier with the internal gear lowered. A surface grinding device characterized in that an engaging piece having teeth similar to an internal gear is disposed at a corresponding position so as to be movable between a forward position in which it engages with a carrier and a retreated position in which it separates from the carrier.