CN212634358U

CN212634358U - Automatic positioning chuck

Info

Publication number: CN212634358U
Application number: CN202020686431.9U
Authority: CN
Inventors: 彭法锦; 叶文森; 王辉亮
Original assignee: Zhuhai Bojay Electronics Co Ltd
Current assignee: Zhuhai Bojay Electronics Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-03-02
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses an automatic positioning chuck, which comprises a base, at least two clamping blocks and a driving component, wherein the at least two clamping blocks are arranged on the base; at least two clamping blocks enclose a mounting position together; the driving assembly comprises a driving piece, a turntable and a guide piece, and the turntable is rotatably arranged on the base; the driving piece is used for driving the turntable to rotate; the guide part is used for guiding the at least two clamping blocks to approach or move away from each other during the rotation of the turntable. The utility model discloses an automatic positioning chuck, it can be with the installation position of work piece clamping in, the rotation through the carousel makes two at least tight piece of clamp press from both sides tight work piece simultaneously.

Description

Automatic positioning chuck

Technical Field

The utility model relates to a manufacturing of firmware device in the machinery trade and application technical field especially relate to an automatic positioning chuck.

Background

At present, clamping and positioning of circular products in the market are mainly completed by clamping the products through one-way pushing of a profiling surface on a clamp and an air cylinder, so that the influence of the appearance tolerance of the products on the positioning precision of the products is large, the center of the products is not overlapped with the center reference of the clamp, and the functional module on the equipment cannot be accurately aligned with the products to cause faults.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an automatic positioning chuck, it can make two at least clamping blocks press from both sides tight work piece simultaneously through the rotation of carousel in the installation position of work piece clamping.

The purpose of the utility model is realized by adopting the following technical scheme:

an automatic positioning chuck comprises a base, at least two clamping blocks and a driving assembly, wherein the at least two clamping blocks are arranged on the base; at least two clamping blocks enclose a mounting position together; the driving assembly comprises a driving piece, a turntable and a guide piece, and the turntable is rotatably arranged on the base; the driving piece is used for driving the turntable to rotate; the guide part is used for guiding the at least two clamping blocks to approach or move away from each other during the rotation of the turntable.

Furthermore, the guide piece comprises a guide column and a guide groove, the guide groove is formed in the turntable, and one end of the guide column is connected into the guide groove in a sliding manner; the other end of the guide column is connected to the clamping block in a sliding mode, and the guide groove is used for guiding the guide column to be close to the installation position or far away from the installation position in the rotating process of the rotary table.

Further, the guide groove comprises an arc groove; the distance from the arc center of the arc groove to the rotation center of the turntable is gradually increased or decreased from one end of the arc groove to the other end of the arc groove.

Further, the guide comprises at least two; the guide posts of the at least two guide pieces are correspondingly connected with the at least two clamping blocks one by one.

Further, the number of the guide pieces is three, and the number of the clamping blocks is three; the guide posts of the three guide pieces are connected with the three clamping blocks in a one-to-one correspondence.

Further, the driving piece comprises two air cylinders and two driving blocks; the cylinder bodies of the two cylinders are fixedly connected to the bottom end of the base; piston rods of the two cylinders are hinged with the two driving blocks in a one-to-one correspondence manner; the base is provided with a first limiting groove, and the first limiting groove extends along the circumferential direction of the turntable; the driving block is slidably connected with the first limiting groove in a penetrating mode and connected with the rotary table.

Furthermore, a rubber pad is arranged on the clamping block.

Furthermore, a second limiting groove and a limiting block are arranged on the rotary table, and the second limiting groove extends along the circumferential direction of the rotary table; the limiting block is connected to the base and is slidably mounted in the second limiting groove.

Compared with the prior art, the beneficial effects of the utility model reside in that: the workpiece can be clamped at the mounting position of the turntable, and the turntable is driven to rotate by the driving piece, so that the product is synchronously clamped by at least two clamping blocks, the condition of low positioning precision caused by the appearance tolerance of the workpiece can be greatly reduced, and the reliability of equipment is improved; the chuck has compact and reliable structure and is suitable for clamping and positioning cylindrical products.

Drawings

Fig. 1 is a schematic structural view of an automatic positioning chuck according to the present invention;

fig. 2 is a schematic structural view of the base of the present invention;

fig. 3 is another view angle structure diagram of the automatic positioning chuck according to the present invention.

In the figure: 10. a base; 20. a turntable; 30. a clamping block; 31. a rubber pad; 40. an installation position; 51. a guide groove; 52. a guide post; 61. a second limit groove; 62. a limiting block; 63. a first limit groove; 71. a drive block; 72. and a cylinder.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, the automatic positioning chuck includes a base 10, at least two clamping blocks 30 and a driving assembly, wherein the at least two clamping blocks 30 are mounted on the base 10, and the at least two clamping blocks 30 jointly enclose a mounting position 40.

Specifically, the driving assembly includes a driving member, a turntable 20 and a guiding member, the turntable 20 is rotatably mounted on the base 10, and the driving member can drive the turntable 20 to rotate. The guide member guides the at least two clamping blocks 30 toward or away from each other when the turntable 20 is rotated.

On the basis of the structure, use the utility model discloses an during automatic positioning chuck, can place the work piece in the installation position 40 that is enclosed by two at least tight piece 30 of clamp, afterwards, start the driving piece, the driving piece can drive carousel 20 and rotate, and when carousel 20 rotated towards a direction, above-mentioned guide piece can guide two above-mentioned tight piece 30 of clamp and be close to each other, realizes pressing from both sides the clamp tightly to the work piece.

Compared with the clamping blocks 30 driven by a single driving mechanism to perform unidirectional motion clamping, the clamping blocks 30 are driven to simultaneously clamp in a guiding manner by the rotating motion of the turntable 20, on one hand, the synchronism can be kept, on the other hand, during clamping, the clamping blocks 30 gradually approach and clasp in the circumferential direction, the situation of low positioning precision caused by the shape tolerance of a workpiece is greatly reduced, and the reliability of the equipment is improved; the chuck has compact and reliable structure and is suitable for clamping and positioning cylindrical products.

Specifically, the guide member includes a guide post 52 and a guide groove 51, the guide groove 51 is opened on the turntable 20, and when the assembly is performed, one end of the guide post 52 is slidably connected in the guide groove 51, and the other end of the guide post 52 is slidably connected to the clamp block 30. During the rotation of the turntable 20, the guide posts 52 can slide in the guide slots 51, so that the guide slots 51 can guide the guide posts 52 to approach the mounting positions 40 or to separate from the mounting positions 40, and further drive the clamping blocks 30 connected with the guide posts to approach or separate from each other, thereby realizing clamping or loosening.

In this embodiment, the guiding groove 51 includes an arc groove, the distance from the arc center of the arc groove to the rotation center of the turntable 20 is gradually increased or decreased from one end of the arc groove to the other end, that is, when the turntable 20 rotates forward, the distance from the arc center of the arc groove to the rotation center of the turntable 20 is gradually decreased from one end of the arc groove to the other end, and when the turntable 20 rotates backward, the distance from the arc center of the arc to the rotation center of the turntable 20 is gradually increased from one end of the arc groove to the other end, when the turntable 20 rotates forward, the guiding column 52 slides to the other end along one end of the arc groove, and can gradually move toward the center of the turntable 20, thereby driving at least two clamping blocks 30 to approach each other. On the contrary, when the turntable 20 rotates reversely, the guiding column 52 slides along the circular arc groove from the other end back to the initial position, so as to guide the guiding column 52 to move away from the center of the turntable 20, and further drive the at least two clamping blocks 30 to move away from each other.

Of course, the above-mentioned guide groove 51 may also be provided with two circular arc sections on the groove wall, the two circular arc sections are connected to each other, the circular arc radius of one of the circular arc sections is gradually reduced from one end to the other end, the circular arc radius of the other circular arc section is gradually increased from one end to the other end, on the basis of the structure, when the turntable 20 rotates, the guide column 52 can slide along one of the circular arc sections first, gradually approach the center of the turntable 20, the guide is guided to the clamping block 30 to be clasped, the turntable 20 continues to rotate, the guide column 52 slides to the other circular arc section, and the center of the turntable 20 can be gradually kept away from, and the guide.

Further, the guide members include at least two guide posts 52 connected to the at least two clamping blocks 30 in a one-to-one correspondence manner, that is, when the turntable 20 rotates, the guide posts 52 of the at least two guide members may simultaneously act to guide the at least two clamping blocks 30 to be clasped or unclamped.

In the present embodiment, the number of the guide members is three, and the number of the clamp blocks 30 is three; the guide posts 52 of the three guide pieces are connected with the three clamping blocks 30 in a one-to-one correspondence manner, and the three clamping blocks 30 can be uniformly distributed at intervals around the circumference of the central axis of the rotating disc 20, namely, the three clamping blocks are distributed in a triangular manner, so that the stability is better.

Further, the driving member includes two air cylinders 72 and two driving blocks 71, wherein the cylinder bodies of the two air cylinders 72 are fixedly connected to the bottom end of the base 10, and the piston rods of the two air cylinders 72 are hinged to the two driving blocks 71 in a one-to-one correspondence manner. A first limit groove 63 is formed in the base 10, and the first limit groove 63 extends along the circumferential direction of the turntable 20; the driving block 71 is slidably inserted into the first limiting groove 63 and connected with the turntable 20. When the driving turntable 20 rotates, the driving block 71 is driven to slide in the first limiting groove 63 through the expansion and contraction of the air cylinder 72, and the driving block 71 hinged to the piston rod can slide along the first limiting groove 63 due to the fact that the first limiting groove 63 extends along the circumferential direction of the turntable 20, and the turntable 20 is guided to rotate. In addition, the length of the groove section of the first limiting groove 63 can also limit the rotation range of the turntable 20.

Further, a rubber pad 31 can be arranged on the clamping block 30, and when the clamping block 30 clamps, the rubber pad 31 can be in contact with the surface of the workpiece, so that the surface of the workpiece is prevented from being damaged. And the rubber block has certain flexibility, so that when the rubber block is clamped on the surface of a workpiece, the tension is larger, and the clamping effect is better.

Further, a second limiting groove 61 and a limiting block 62 are arranged on the turntable 20, and similarly, the second limiting groove 61 extends along the circumferential direction of the turntable 20; the limiting block 62 is connected to the base 10 and slidably mounted in the second limiting groove 61. When the turntable 20 rotates, the limiting block 62 can also slide in the second limiting groove 61, and the limiting block 62 abuts against two end walls of the second limiting groove 61 in the sliding process, so that the rotating range of the turntable 20 can also be limited.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. An automatic positioning chuck is characterized by comprising a base, at least two clamping blocks and a driving assembly, wherein the at least two clamping blocks are arranged on the base; at least two clamping blocks enclose a mounting position together; the driving assembly comprises a driving piece, a turntable and a guide piece, and the turntable is rotatably arranged on the base; the driving piece is used for driving the turntable to rotate; the guide part is used for guiding the at least two clamping blocks to approach or move away from each other during the rotation of the turntable.

2. The automatic positioning chuck according to claim 1, wherein the guiding member comprises a guiding post and a guiding groove, the guiding groove is opened on the rotating disk, and one end of the guiding post is slidably connected in the guiding groove; the other end of the guide column is connected to the clamping block in a sliding mode, and the guide groove is used for guiding the guide column to be close to the installation position or far away from the installation position in the rotating process of the rotary table.

3. The automatic positioning chuck according to claim 2, wherein the guide groove comprises a circular arc groove; the distance from the arc center of the arc groove to the rotation center of the turntable is gradually increased or decreased from one end of the arc groove to the other end of the arc groove.

4. The automatic positioning chuck of claim 2, wherein the guides comprise at least two; the guide posts of the at least two guide pieces are correspondingly connected with the at least two clamping blocks one by one.

5. The automatic positioning chuck according to claim 4, wherein said guide member is provided with three, and said clamping block is provided with three; the guide posts of the three guide pieces are connected with the three clamping blocks in a one-to-one correspondence.

6. The automatic positioning chuck according to any one of claims 1 to 5, wherein the driving member comprises two air cylinders and two driving blocks; the cylinder bodies of the two cylinders are fixedly connected to the bottom end of the base; piston rods of the two cylinders are hinged with the two driving blocks in a one-to-one correspondence manner; the base is provided with a first limiting groove, and the first limiting groove extends along the circumferential direction of the turntable; the driving block is slidably connected with the first limiting groove in a penetrating mode and connected with the rotary table.

7. The automatic positioning chuck according to any one of claims 1 to 5, wherein the clamping block is provided with a rubber pad.

8. The automatic positioning chuck according to any one of claims 1 to 5, wherein the turntable is provided with a second limiting groove and a limiting block, the second limiting groove extends along the circumferential direction of the turntable; the limiting block is connected to the base and is slidably mounted in the second limiting groove.