CN218555615U

CN218555615U - Three-jaw chuck

Info

Publication number: CN218555615U
Application number: CN202222886363.2U
Authority: CN
Inventors: 杨华
Original assignee: Zhengzhou Yueda Technology Equipment Co ltd
Current assignee: Zhengzhou Yueda Technology Equipment Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-03
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a three-jaw chuck, which relates to the technical field of processing fixtures and comprises a chuck body, wherein three clamping jaws capable of moving along the radial direction of the chuck body are arranged on the chuck body, each clamping jaw consists of a first clamping block, a second clamping block and a third clamping block, and an adjusting device for adjusting the relative positions of the first clamping block, the second clamping block and the third clamping block is arranged in each clamping jaw; the relative positions of the first clamping block, the second clamping block and the third clamping block are adjusted through the adjusting device, so that one side of the workpiece is abutted against the second clamping block or the third clamping block when the disc-shaped workpiece is clamped, and the workpiece is prevented from deflecting.

Description

Three-jaw chuck

Technical Field

The utility model relates to a processing anchor clamps technical field specifically is a three-jaw chuck.

Background

Three-jaw chuck, also known as three-jaw self-centering chuck, is usually used as a machine tool accessory, and utilizes the radial movement of three jaws uniformly distributed on the chuck body to clamp and position a workpiece, and can determine the rotation center of the workpiece according to the circumference of the workpiece clamping part.

However, when the conventional three-jaw chuck clamps and clamps a disc-shaped workpiece, since the workpiece is thin, it is inconvenient to machine the workpiece when one side of the workpiece contacts with the surface of the chuck, and thus it is inconvenient to clamp and clamp the disc-shaped workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-jaw chuck aims at solving the problem among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the three-jaw chuck comprises a chuck body, three clamping jaws capable of moving along the radial direction of the chuck body are mounted on the chuck body, each clamping jaw is composed of a first clamping block, a second clamping block and a third clamping block, and an adjusting device used for adjusting the relative positions of the first clamping block, the second clamping block and the third clamping block is mounted in each clamping jaw.

The utility model discloses a further technical scheme does, adjusting device is including the first adjusting device who is used for adjusting relative position between first fixture block and the second fixture block, still including the second adjusting device who is used for adjusting relative position between second fixture block and the third fixture block.

The utility model discloses a further technical scheme does, first fixture block slidable mounting is on the second fixture block, first adjusting device is including rotating the first screw rod of installing on the second fixture block, first screw rod and first fixture block threaded connection.

The utility model discloses a further technical scheme does, second fixture block slidable mounting is on the third fixture block, first adjusting device is including rotating the second screw rod of installing on the third fixture block, second screw rod and second fixture block threaded connection.

In order to make the utility model discloses have the function of the first fixture block of synchronous messenger and the motion of second fixture block, the utility model discloses a further technical scheme does, the one end of second screw rod is provided with the drive head, install transmission assembly between first screw rod and the second screw rod.

The utility model discloses a further technical scheme does, drive assembly installs the drive gear in the second chuck including rotating, set up the spout along second screw rod length direction on the second screw rod, be provided with in drive gear's the hole and can be in the gliding slider of spout, install the gear train between drive gear and the first screw rod.

In order to make the utility model discloses increase the effect of frictional force when having the clamp and adorn the disc work piece, the utility model discloses a further technical scheme does, all be provided with the bracing piece that is used for supporting the work piece on second fixture block and the third fixture block, be provided with push structure on second fixture block and the third fixture block, make the upper surface of partly protrusion second fixture block and the third fixture block of bracing piece when second fixture block and third fixture block slide to the outermost end, and be provided with anti-skidding rubber on some of this bracing piece.

The pushing structure comprises sliding blocks arranged at the bottoms of the second clamping block and the third clamping block, one end of the supporting rod is rotatably arranged on the second clamping block or the third clamping block, one part of the supporting rod, which is close to the hinge joint, protrudes upwards, and one part of the supporting rod, which is far away from the hinge joint, can abut against the sliding blocks

The beneficial effects of the utility model are that:

1. the utility model discloses during the use, adjust the relative position of first fixture block, second fixture block and third fixture block through adjusting device to make one side of work piece support on second fixture block or third fixture block when pressing from both sides dress disc work piece, thereby avoid the work piece to take place to deflect.

2. The utility model discloses during the use, make first fixture block and second fixture block motion through the drive assembly between two screws rods and two screws rods, when first fixture block and second fixture block moved the outermost end, the upper surface of second fixture block and third fixture block was moved out to a part of bracing piece to make non-slip rubber support the work piece, increase the frictional force that the work piece received.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of another embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a fixture block according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a fixture block according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the support rod according to the embodiment of the present invention.

In the figure: 1. a chuck body; 2. a claw; 21. a first clamping block; 22. a second fixture block; 23. a third fixture block; 3. an adjustment device; 31. a first adjusting device; 32. a second adjustment device; 33. a drive head; 34. a transmission assembly; 341. a drive gear; 342. a gear set; 4. a support bar; 5. a pushing structure.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-2, a three-jaw chuck includes a chuck body 1, three jaws 2 capable of moving along a radial direction of the chuck body 1 are mounted on the chuck body 1, each jaw 2 includes a first block 21, a second block 22 and a third block 23, and an adjusting device 3 for adjusting relative positions of the first block 21, the second block 22 and the third block 23 is mounted in each jaw 2.

In the present embodiment, the relative positions of the first fixture block 21, the second fixture block 22 and the third fixture block 23 are adjusted by the adjusting device 3, so that one side of the workpiece abuts against the second fixture block 22 or the third fixture block 23 when the disc-shaped workpiece is clamped, thereby preventing the workpiece from deflecting.

Specifically, the adjusting device includes a first adjusting device 31 for adjusting the relative position between the first latch 21 and the second latch 22, and further includes a second adjusting device 32 for adjusting the relative position between the second latch 22 and the third latch 23.

Specifically, the first fixture block 21 is slidably mounted on the second fixture block 22, and the first adjusting device 31 includes a first screw rotatably mounted on the second fixture block 22, and the first screw is in threaded connection with the first fixture block 21.

Specifically, the second fixture block 22 is slidably mounted on the third fixture block 23, the first adjusting device 31 includes a second screw rotatably mounted on the third fixture block 23, the second screw is in threaded connection with the second fixture block 22, and the first fixture block 21 and the second fixture block 22 are moved by the rotation of the screw.

Further, a driving head 33 is provided at one end of the second screw, a transmission assembly 34 is installed between the first screw and the second screw, and the driving head 33 is rotated using a wrench, thereby rotating the screws.

Specifically, the transmission assembly 34 includes a driving gear 341 rotatably installed in the second fixture block 22, the second screw is provided with a sliding slot along the length direction of the second screw, a sliding block capable of sliding in the sliding slot is disposed in an inner hole of the driving gear 341, a gear set 342 is installed between the driving gear 341 and the first screw, when the second screw rotates, the second fixture block 22 moves, the driving gear 341 rotates, and the first screw rotates through the gear set 342, so that the first fixture block 21 and the second fixture block 22 move simultaneously.

Specifically, the second fixture block 22 and the third fixture block 23 are both provided with a support rod 4 for supporting the workpiece, the second fixture block 22 and the third fixture block 23 are provided with a pushing structure 5, when the second fixture block 22 and the third fixture block 23 slide to the outermost ends, a part of the support rod 4 protrudes out of the upper surfaces of the second fixture block 22 and the third fixture block 23, and a part of the support rod 4 is provided with an anti-skid rubber.

Specifically, the pushing structure 5 includes sliding blocks disposed at the bottoms of the second fixture block 22 and the third fixture block 23, one end of the support rod 4 is rotatably mounted on the second fixture block 22 or the third fixture block 23, a portion of the support rod 4 near the hinge joint protrudes upward, a portion of the support rod 4 far away from the hinge joint can abut against the sliding blocks, the first fixture block 21 and the second fixture block 22 are moved through the two screws and the transmission assembly 34 between the two screws, when the first fixture block 21 and the second fixture block 22 move to the outermost end, because a portion of the support rod 4 far away from the hinge joint abuts against the sliding blocks, the support rod 4 is rotated, and a portion of the support rod 4 moves out of the upper surfaces of the second fixture block 22 and the third fixture block 23, so that the anti-skid rubber abuts against the workpiece, and the friction force exerted on the workpiece is increased.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a three-jaw chuck, its characterized in that, includes chuck body (1), install three jack catch (2) that can follow chuck body (1) radial motion on chuck body (1), jack catch (2) are by first fixture block (21), second fixture block (22) and third fixture block (23), install adjusting device (3) that are used for adjusting first fixture block (21), second fixture block (22) and third fixture block (23) relative position in jack catch (2).

2. The three-jaw chuck according to claim 1, characterized in that said adjusting means comprise first adjusting means (31) for adjusting the relative position between the first dog (21) and the second dog (22), and second adjusting means (32) for adjusting the relative position between the second dog (22) and the third dog (23).

3. The three-jaw chuck according to claim 2, wherein the first block (21) is slidably mounted on the second block (22), and the first adjusting means (31) comprises a first screw rotatably mounted on the second block (22), and the first screw is threadedly connected with the first block (21).

4. The three-jaw chuck according to claim 3, wherein said second jaw (22) is slidably mounted on a third jaw (23), and said first adjusting means (31) comprises a second threaded rod rotatably mounted on said third jaw (23), said second threaded rod being threadedly engaged with said second jaw (22).

5. Three-jaw chuck according to claim 4, wherein the second screw is provided with a drive head (33) at one end, and a transmission assembly (34) is mounted between the first and second screws.

6. The three-jaw chuck according to claim 5, wherein the transmission assembly (34) comprises a driving gear (341) rotatably mounted in the second block (22), the second screw is provided with a sliding slot along the length direction of the second screw, a sliding block capable of sliding in the sliding slot is arranged in an inner hole of the driving gear (341), and a gear set (342) is mounted between the driving gear (341) and the first screw.

7. The three-jaw chuck according to any one of claims 1 to 6, wherein the second block (22) and the third block (23) are provided with a support rod (4) for supporting a workpiece, the second block (22) and the third block (23) are provided with a pushing structure (5), when the second block (22) and the third block (23) slide to the outermost ends, a part of the support rod (4) protrudes from the upper surfaces of the second block (22) and the third block (23), and a part of the support rod (4) is provided with an anti-slip rubber.

8. The three-jaw chuck according to claim 7, characterized in that the pushing structure (5) comprises sliding blocks disposed at the bottom of the second block (22) and the third block (23), one end of the supporting rod (4) is rotatably mounted on the second block (22) or the third block (23), a portion of the supporting rod (4) near the hinge is protruded upward, and a portion of the supporting rod (4) far from the hinge is capable of abutting against the sliding blocks.