JPS59156666A - Automatic work loading mechanism in surface grinder - Google Patents

Abstract

PURPOSE:To aim at enhancing the efficiency of working and as well to prevent works from being contaminated, by providing such an arrangement that a carrier and works are held, by suckers, to an absorbing base plate of a work charging mechanism in a surface grinder, and the charging of the carrier and works is automated. CONSTITUTION:A plate 29 is relatively displaciably attached through a spring 30b to the rod 30a of a cylinder 30 which is secured to a machine frame 1 in a surface grinder. A plurality of suckers 38, 39 for absorbing and holding a carrier 8 and works 9 are vertically movably attached to an absorbing base plate 34 which is, in turn, vertically movably supported to the above-mentioned plate 29. A proximity switch 42 for detecting the mis-mesh between the carrier 8 and a sun gear 4 in view of the relative displacement between the plate 29 and the rod 30a, is attached to the plate 29. Further, a proximity switch 46 for detecting the mis-mesh between the carrier 8 and an inner ring gear 3 in view of the displacement of the suckers 38, 39, is attached to the absorbing base plate 34. In accordance with detection signals from these proximity switches 42, 46, the absorbing base plate 34 is rotated by means of a jig cylinder so that a supporting plate transversely moves.

Description

[Detailed description of the invention] The present invention relates to a surface grinding device.

Conventionally, there have been known lapping machines and polishing machines in which a carrier is meshed between a rotating internal gear and a sun gear, and the workpiece held by the carrier is ground by upper and lower surface plates. However, this kind of conventional surface grinding equipment relies on manual loading of carriers and workpieces, which is inefficient and prevents mass production.Furthermore, the workers themselves become a source of contamination and damage the machined surface. There was a problem that the quality could easily deteriorate due to contact.

The present invention aims to improve machining efficiency by automating the loading of carriers and workpieces, and at the same time to prevent contamination of workpieces by workers. rod (
A plate is attached so as to be relatively displaceable through a spring brush, and a suction substrate is supported on the plate so as to be movable downward, and a plurality of suction cups for suctioning and holding carriers and workpieces on the suction substrate are movable up and down. A proximity switch is attached to the plate to detect mismeshing between the carrier and the sun gear from the relative displacement between the plate and the rod, and a proximity switch is added to the suction board to detect mismeshing between the gear rear and the internal gear from the displacement of the suction cup. The present invention is characterized in that proximity switches for detection are attached, and a rotation means for rotating the suction substrate and a lateral movement means for laterally moving the suction substrate based on detection signals from these proximity switches are attached.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIGS. 1 and 2, 1 is a body, 2 is a lower surface plate disposed in the center of the body 1, and 3 is a lower surface plate. 20 is an internal gear that can freely move up and down around 20 rotations, 4 is a sun gear located at the center of the lower surface plate 2, and 5 is an upper surface plate that can be freely moved downward by a cylinder 6. In the processing section 7, a plurality of carriers 8 are meshed with the internal gear 3 and the sun gear 4, and the workpiece 9 held by these carriers 8 is machined at a constant speed of 2. It is configured to perform grinding processing using a disk 2.5.

Around the processing section 7, an annular rotating ring 10 is disposed concentrically with the lower surface plate 2, and the peripheral edge of the rotating ring 10 is supported by support rollers II and 12 on the machine body 1. A drive gear 14 connected to a motor 13 is meshed with a gear 10α on the inner surface of the rotary ring 10, and the rotary ring 10 is configured to be able to be driven to revolve around the processing section 7 by the drive gear I4. , the same number of carrier transfer tables 15 as the carriers 8 are installed at equal intervals.

Still, around the processing section 7, the same number of carrier take-out tables 16 as the transfer tables 5 are arranged at equal intervals, and these take-out tables 16 are movable up and down at a position lower than the transfer table 15 and can be used for processing. It is movable back and forth toward the center of the section 7. That is, as is clear from FIGS. 3 and 4, the base 17 is supported on the body 1 so as to be movable up and down by the motor 18,
The take-out stand 16 is disposed on the base 17 so as to be slidable along a guide 19, and a driving cylinder 20 is connected to the take-out stand 16. A proximity switch 161 for detecting the lower surface plate 2 is provided on the upper surface of the take-out table 16.
Z is height-adjustable and rotatable to the operating position (chain line position), and when taking out the carrier, adjust the height of the take-out table 6 to the position where the lower surface plate 2 is detected with the proximity switch 16 (L). By doing so, the height of the take-out table 16 can be maintained at approximately the same level or slightly lower regardless of changes in the height of the grinding surface due to wear of the lower surface plate 2, etc. On the top surface of the platform 16, a turntable 21 on which the carriers 8 taken out from the processing section 7 are placed is rotatably arranged by a motor 22, and also for adjusting the direction of the carriers 8 taken out in irregular directions. In order to perform
The direction of the carrier 8 can be adjusted to a fixed direction by rotating the turntable 21 to a position where the workpiece 9 is detected by the sensor 25.

At positions corresponding to each of the take-out tables 16, there is a carrier loading mechanism 26 for simultaneously holding the carrier 8 and workpiece 9 on the transfer table 15 and loading them into the processing section 7, and a carrier loading mechanism 26 for simultaneously holding the carrier 8 and workpiece 9 on the transfer table 15 and loading the carrier 8 and workpiece 9 after processing. A carrier take-out mechanism 27 for taking out the carrier from the processing section 7 onto the take-out stand 16 is provided.

As shown in FIGS. 5 and 6, the carrier loading mechanism 26 includes a sliding rod 28 provided on the machine body 1 so as to be movable back and forth toward the center of the processing section 7, and fixed to the tip of the sliding rod 28. The rond 30 (L) of the drive cylinder 30 is connected to the plate 29 with a spring 30 h so as to be slidable back and forth, and the support plate 31 is attached to the front surface of the plate 29 so as to be movable laterally, and the drive cylinder 30 (L) is attached to the front surface of the plate 29 so as to be movable laterally. A motor cylinder 33 that drives the rod 33 (L) by a built-in mortar is installed vertically on the support plate 31, which is connected to the jig cylinder 32 for the mortar cylinder 33. The suction substrate 34 is rotatably attached via a bearing 35, and can be lowered by the motor cylinder to the position where the proximity switch 34 (L) is activated, that is, the position close to the lower surface plate 2.The suction substrate 34 is equipped with a vacuum tube. :(6,3
carrier suction cup 38 connected to the vacuum pump via 7
A plurality of workpiece suction cups 39 are provided, each of which can be moved downwardly, and these suction cups 38 can be turned on and off independently.
, 39, so that the carrier 8 and the workpiece 9 can be held by suction at the same time, - a protrusion 40 is provided at the center of the lower surface of the suction substrate 34, which is movable up and down by a built-in spring;
When the carrier 8 is attracted, the protrusion 40 is inserted into the hole 4 in the center of the carrier.
1 so that their centering is performed.

A proximity switch 42 for detecting a change in the gap α between the plate 29 and the rod 30 (L) is still attached to the plate 29, while a jig cylinder 43 and a spring seat plate 44 are mounted on the upper surface of the suction substrate 34. and arm 45 fixed on the motor cylinder 330 and rod 33 (l).
The rod 43 (L) of the jig cylinder 43 is brought into contact with one side, and the return spring 44 (L) is interposed between the other side of the arm 45 and the spring seat plate 44.
Norosod 43 (By extending and contracting L and pressing and releasing the arm 45, the suction substrate 34 can be slightly rotated,
As shown in FIG. 5, when the carrier 8 is pressed against the sun gear 4 and meshed with the lower surface plate 2 while maintaining a slight gap, if they do not mesh, the carrier 8 The proximity switch 42 detects the narrowing of the gap α due to the plate 29 being pushed rearward via the proximity switch 42, and the detection signal causes the loading mechanism 26 to move slightly backward, and the jig cylinder 44 is driven to remove the suction substrate 34. By rotating the sun gear 4 slightly (for example, about one gear pitch of the sun gear 4) and repeating the above meshing operation, the sun gear 4
I am trying to engage with them.

Further, among the carrier suction cups 38, the one located on the internal gear 3 side has a proximity switch 4 for detecting its upward movement.
6 is provided to prevent the suction cup 38 from being pushed up by the carrier 8 when the carrier 8 meshes with the sun gear 4 and the internal gear 3 is raised and meshes with the internal gear 3. By detecting it with the switch 46 and using the detection signal to stop the internal gear 3 at that position and operate the jig cylinder 32, the support plate 31, that is, the carrier 8, is slightly adjusted (for example, about one gear pitch of the internal gear 3).
I'm trying to move it horizontally. This lateral movement allows the carrier 8 and the internal gear 3 to mesh with each other.

Further, as shown in FIGS. 3 and 4, the carrier take-out mechanism 27 is mounted on the take-out table 16 with the rod 4? A cylinder 47 is fixed so that C1 moves back and forth toward the center of the processing section 7, and a pair of upper and lower claws 49 that clamp the end of the carrier 8 to a block 48 provided at the tip of the rod 47 (L) are fixed.
a, 49h are provided so as to be openable and closable, and a support roller 50 is attached to the rod 47α to prevent its tip from being displaced downward.

Note that as the means for taking out the carrier, a method of attracting the carrier using a suction cup or an electromagnet can also be adopted.

A carrier loading section 51 and a carrier unloading section 52 are provided outside the transfer table 15. A carry-in mechanism 54 that can be placed is provided, and the carry-out section 52 is provided with a carry-out mechanism 56 that can simultaneously hold the carrier 8 and workpiece 9 on the transfer table 15 and carry them out to the carry-out table 55. The carrying-in mechanism 54 and the carrying-out mechanism 56 are mounted at the tip of a rotatable arm 57 and can be independently controlled on and off in the same manner as the carrier loading mechanism 26 described above.

A carrier suction cup and a workpiece suction cup are provided, and the carrier 8 and the workpiece 9 can be sucked at the same time by these suction cups.

Next, the operation of the surface grinding device having the structure acid will be explained.

The rotary ring 10 is intermittently rotated by 0 degrees by the mass and motor 13, and the carrier 8, which is conveyed by a conveyor with the direction adjusted onto the loading table 53, is transferred to the transfer table by the loading mechanism 54 while holding the workpiece 9. 15.

When the carriers 8 are placed on all the transfer tables 15, they stop at the same position. Here, each carrier loading mechanism 26 operates simultaneously, and the carriers 8 and workpieces 9 on the transfer table 15 are simultaneously sucked and lifted by the suction cups 38 and 39, and transferred forward by the operation of the cylinder 30 to be loaded into the processing section 7. do. During this time, in the rotating ring 10 series and the carrier loading mechanism 26, the suction substrate 34 is held at the position where the proximity switch 34Q is activated by the operation of the motor cylinder 33, that is, a slight gap is maintained between the carrier 8 and the lower surface plate 2. From this position, the suction substrate 34 moves forward by the operation of the cylinder 3o, and the carrier 8
is first meshed with the sun gear 4. When the meshing with the sun gear 4 is completed, the internal gear 3 rises, and the carrier 8 is brought into mesh with the internal gear 3.
loading is completed. If the carrier 8 and the sun gear 4''!, or the internal gear 3 do not mesh at once, the mismatch is detected by the proximity switch 42 and the jig cylinder 44, as described above, and the jig cylinder 44 is sucked by the jig cylinder 32. The rotation of the substrate 34 or the lateral movement of the support plate 31 is performed to repeat the above-described meshing operation.

When loading of the carrier 8 is completed, the carrier loading mechanism 26
releases the carrier 8 and the workpiece 9 and returns to the starting position, the upper surface plate 5 descends, and grinding of the workpiece 9 is started. During the grinding process, a new carrier 8 and workpiece 9 are placed on each transfer table 15 by the above-mentioned carry-in mechanism 54.

When the machining is completed, the gears 3, 4 and the surface plate 2.5 temporarily stop, the lower surface plate 5 rises, and only the upper surface plate 51 detects the position of the carrier by a sensor (not shown) attached to the machine body 1. is detected, the position of each carrier 8 is adjusted so that it comes to a position corresponding to the take-out table 16, and the internal gear 3 is lowered.

Subsequently, the take-out table 16 moves forward by the operation of the cylinder 20, and its height is adjusted to match the lower surface plate 2, and at the same time is set as the forward height for the next carrier take-out. The cylinder, 17, of the round door I7 (l) moves forward to clamp the end of the carrier 8 between the claws 49 (1, 4'31) and pulls it out onto the turntable 2I in the take-out table 16. The table 16 is moved back, and the direction of the carrier 8 is adjusted by rotating the turntable 21. This adjustment of the direction of the carrier is such that each workpiece 9 occupies a fixed position when the carrier 8 is taken out in an irregular direction. By adjusting the direction, the carrier 8 and the workpiece 9 can be moved to each suction cup 38 of the carrier loading mechanism 26.
, 39 at the same time, and until the workpiece 9 is detected by the sensor 25, the turntable 2
1 is rotated to adjust its direction.

While the direction of the carrier is being adjusted, the carrier 8 and workpiece 9 placed on the transfer table 15 are loaded into the processing section 7 by the carrier loading mechanism 26, and the grinding process is performed thereon.

On the other hand, the carrier 8 whose direction is adjusted on the take-out table 16
And the work 9 is loaded onto the carrier loading mechanism 26 and the take-out table 1.
6 and stops at the position shown in FIG. 9
is carried out onto the carrying-out table 55. After that, each transfer table 1
5 rotates intermittently by θ degrees, and the carriers and workpieces placed thereon are sequentially carried out at the carry-out section 52, and the empty transfer table +5- is placed on the carry-in table 53 at the carry-in section 51. A new shell carrier 8 and workpiece 9 are carried in.

Grinding of the workpiece is performed by repeating this operation.

As described above, according to the present invention, the suction board is provided with a suction cup for the carrier and a suction cup for the workpiece, and these suction cups simultaneously suck and hold the carrier and the workpiece and load them into the processing section. can be loaded automatically and in a short time, and if the carrier and the sun gear and internal gear do not mesh at once, a proximity switch detects their mismatch and rotates the suction board. Since the meshing operation is repeated by moving the parts horizontally or horizontally, it is possible to reliably mesh them with a simple operation.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted partial sectional view showing an embodiment of the present invention;
Fig. 2 is a partially omitted plan view, Figs. 6 and 4 are enlarged side views and plan views of the carrier ejection mechanism and carrier ejection mechanism, and Figs. 5 and 6 are enlarged side views and plan views of the carrier loading mechanism. FIG. 1... Airframe, 2... Lower surface plate, 3... Internal gear, 4... Sun gear, 5.11e upper surface plate,
8.Table/Carrier, 9..Work, 26..
・Carrier loading mechanism, 29---plate, 30
... Cylinder, 30 (L... Rod, 30
h...Sufring, 34...Adsorption substrate, 38.39
...Sucker, 42, 46...Proximity switch.

Claims (1)

[Claims] 1. In a surface grinding device in which a carrier is meshed with an internal gear and a sun gear that are connected to a drive source and are rotatable, and a workpiece held by the carrier is processed by upper and lower surface plates, A plate is attached to the rond of a fixed cylinder so as to be relatively displaceable via a spring, and a suction substrate is supported by the plate so as to be movable up and down, and a plurality of suction cups for holding carriers and workpieces on the suction substrate can be moved up and down. A proximity switch is installed on the plate to detect mismeshing between the carrier and the sun gear from the relative displacement between the plate and the rond, and a proximity switch is installed on the suction board to detect mismeshing between the carrier and the internal gear from the displacement of the suction cup. automatic loading of a workpiece in a surface grinding device, characterized in that a proximity switch is installed to detect this, and a rotation means for rotating a suction substrate and a lateral movement means for lateral movement are attached based on detection signals from these proximity switches. mechanism.