CN221110710U

CN221110710U - Automatic clamping device for machine tool

Info

Publication number: CN221110710U
Application number: CN202322612298.9U
Authority: CN
Inventors: 冯津强; 赵忠刚; 陈高杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-06-11
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to the technical field of machine tool fixtures, in particular to an automatic clamping device for a machine tool, which comprises a fixture for clamping a workpiece; the chuck is rotatably arranged in the clamp; the first sliding grooves are provided with three groups, and the three groups of the first sliding grooves are formed in the front side of the clamp; the clamping jaws are provided with three groups, the three groups of clamping jaws are movably inserted into the three groups of first sliding grooves, and the rear sides of the three groups of clamping jaws are meshed with the front sides of the chucks; and the automatic clamping assembly is rotatably arranged in the clamp. When the workpiece is clamped, the workpiece is inserted into the three groups of clamping jaws and the clamp, the workpiece pushes the screw rod to move into the clamp, the screw rod moves to drive the gear and the chuck to rotate, and the chuck rotates to drive the three groups of clamping jaws to clamp the workpiece, so that when the workpiece is clamped, the workpiece is not required to be inserted into the clamp, and then the chuck is twisted by using the tool, and the step of clamping the workpiece is reduced.

Description

Automatic clamping device for machine tool

Technical Field

The utility model relates to the technical field of machine tool fixtures, in particular to an automatic clamping device for a machine tool.

Background

The device for clamping the workpiece on the numerical control machine tool is called a machine tool clamp, the machine tool clamp can be divided into two main types of universal clamps and special clamps, the universal clamps are clamps capable of clamping two or more workpieces, such as a three-jaw chuck, a four-jaw chuck, a spring clamping sleeve, a universal mandrel and the like on a machine tool, the special clamps are clamps specially designed for a certain working procedure for processing a certain specific workpiece, the clamps are used for clamping the workpiece to be processed in the turning process of the numerical control machine tool, so that the positioning precision of the workpiece to be processed is required to be ensured, the loading and unloading are convenient and quick as far as possible, the workpiece is required to be inserted into the clamps firstly when the existing machine tool clamp clamps the workpiece, the clamps are twisted manually, so that the workpiece is clamped in the clamps, the automatic clamping effect on the workpiece is not achieved, and the workpiece clamping and the installation efficiency is low.

Disclosure of utility model

The utility model aims to provide an automatic clamping device for a machine tool, which is used for solving the problems that the existing machine tool clamp provided in the background art does not have the effect of automatically clamping a workpiece and has lower efficiency of clamping and installing the workpiece.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an automatic clamping device for a machine tool comprises a clamp for clamping a workpiece;

the chuck is rotatably arranged in the clamp;

the first sliding grooves are provided with three groups, and the three groups of the first sliding grooves are formed in the front side of the clamp;

The clamping jaws are provided with three groups, the three groups of clamping jaws are movably inserted into the three groups of first sliding grooves, and the rear sides of the three groups of clamping jaws are meshed with the front sides of the chucks;

The automatic clamping assembly is rotatably installed in the clamp, and is used for adjusting and clamping when a workpiece is inserted into the clamp and the three clamping jaws.

Preferably, the automatic clamping assembly comprises a gear, the gear is rotatably installed in the clamp, the gear is meshed with the inner wall of the chuck, a threaded hole is formed in the gear, a screw is movably inserted in the threaded hole, and a movable groove is formed in the rear end of the clamp.

Preferably, four groups of protruding blocks are fixedly arranged at the rear end of the screw rod, and the four groups of protruding blocks are matched with the outer wall of the movable groove.

Preferably, the screw is internally provided with a mounting groove, a telescopic rod is movably inserted in the mounting groove, a nut is sleeved on the front end of the screw through threads, and a cross-shaped groove is formed in an opening at the front end of the screw.

Preferably, scale values are arranged on the surface of the telescopic rod.

Preferably, an annular groove is formed in the clamp, a mounting ring is fixedly mounted at the rear end of the chuck, the mounting ring is movably inserted into the annular groove, second sliding grooves are formed in the inner walls of the upper side and the lower side of the annular groove and the inner wall of the mounting ring, and a plurality of groups of balls are movably mounted in the second sliding grooves.

Compared with the prior art, the utility model has the beneficial effects that: when the workpiece is clamped, the workpiece is inserted into the three groups of clamping jaws and the clamp, the workpiece pushes the screw rod to move into the clamp, the screw rod moves to drive the gear and the chuck to rotate, and the chuck rotates to drive the three groups of clamping jaws to clamp the workpiece, so that when the workpiece is clamped, the workpiece is not required to be inserted into the clamp, the chuck is twisted by using the tool, the step of clamping the workpiece is reduced, and the workpiece clamping efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic elevational view of the structure of the present utility model;

FIG. 2 is a schematic left-hand cross-sectional view of the structure of the present utility model;

FIG. 3 is a schematic diagram showing the front view of the gear and screw of the present utility model;

FIG. 4 is an enlarged partial schematic view of the FIG. 2A;

fig. 5 is an enlarged partial schematic view of the utility model B of fig. 2.

In the figure: 1. a clamp; 2. a chuck; 3. a first chute; 4. a claw; 5. a gear; 6. a threaded hole; 7. a screw; 8. a bump; 9. a movable groove; 10. a mounting groove; 11. a telescopic rod; 12. a screw cap; 13. a mounting ring; 14. a second chute; 15. a ball; 16. an annular groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided: an automatic clamping device for a machine tool comprises a clamp 1 for clamping a workpiece;

the chuck 2 is rotatably arranged in the clamp 1;

The first sliding grooves 3 are formed in three groups, and the three groups of first sliding grooves 3 are formed in the front side of the clamp 1;

the clamping claws 4 are provided with three groups, the three groups of clamping claws 4 are movably inserted into the three groups of first sliding grooves 3, and the rear sides of the three groups of clamping claws 4 are meshed with the front sides of the chucks 2;

The automatic clamping assembly is rotatably installed in the clamp 1 and is used for adjusting and clamping when workpieces are inserted into the clamp 1 and the three clamping jaws 4, the workpieces are inserted into the clamp 1, and the workpieces are pushed to the automatic clamping assembly, so that the three groups of clamping jaws 4 are driven to clamp the workpieces;

Further, the automatic clamping assembly comprises a gear 5, the gear 5 is rotatably arranged in the clamp 1, the gear 5 is meshed with the inner wall of the chuck 2, a threaded hole 6 is formed in the gear 5, a screw rod 7 is movably inserted in the threaded hole 6, a movable groove 9 is formed in the rear end of the clamp 1, the structural workpiece pushes the screw rod 7, the screw rod 7 moves to drive the gear 5 to rotate, the gear 5 rotates to drive the chuck 2 to rotate, and three groups of clamping jaws 4 can be moved to clamp the workpiece.

Further, four groups of protruding blocks 8 are fixedly arranged at the rear end of the screw rod 7, the four groups of protruding blocks 8 are matched with the outer wall of the movable groove 9, and the structure slides in the movable groove 9 through the four groups of protruding blocks 8 at the rear end of the screw rod 7, so that the screw rod 7 can only move forwards and backwards and cannot rotate.

Further, the installation groove 10 is formed in the screw rod 7, the telescopic rod 11 is movably inserted in the installation groove 10, the screw cap 12 is sleeved on the front end of the screw rod 7 through threads, the cross-shaped groove is formed in the opening of the front end of the screw rod 7, the telescopic rod 11 is pulled out of the installation groove 10 through the structure, the telescopic rod 11 is fixed through twisting the screw cap 12, and the lengths of the screw rod 7 and the installation groove 10 are adjusted according to the thickness of a workpiece.

Further, scale values are arranged on the surface of the telescopic rod 11, and the structure controls the length of the telescopic rod 11 drawn out of the screw rod 7 according to the scales on the surface of the telescopic rod 11.

Further, an annular groove 16 is formed in the clamp 1, a mounting ring 13 is fixedly mounted at the rear end of the chuck 2, the mounting ring 13 is movably inserted into the annular groove 16, second sliding grooves 14 are formed in the inner walls of the upper side and the lower side of the annular groove 16 and the inner wall and the outer wall of the mounting ring 13, a plurality of groups of balls 15 are movably mounted in the second sliding grooves 14, and when the structural gear 5 rotates in the clamp 1, the balls 15 slide in the second sliding grooves 14, so that the friction force of the mounting ring 13 and the gear 5 rotating in the annular groove 16 is reduced.

Working principle: when clamping a workpiece, as shown in fig. 2, 3, 4 and 5, the workpiece is inserted into the clamp 1, the workpiece extrudes the front end of the screw rod 7, the screw rod 7 moves towards the clamp 1, the screw rod 7 drives the lug 8 to slide in the movable groove 9, the screw rod 7 drives the gear 5 to rotate through the threaded hole 6 when moving, the gear 5 rotates to drive the chuck 2 to rotate, the chuck 2 rotates to drive the three groups of claws 4 to slide in the three groups of first sliding grooves 3, the three groups of claws 4 slide to clamp the workpiece, the mounting ring 13 at the rear side of the chuck 2 rotates in the annular groove 16 when the chuck 2 rotates in the clamp 1, the friction force between the mounting ring 13 and the inner wall of the annular groove 16 is reduced through the balls 15 in the second sliding groove 14 when the mounting ring 13 rotates in the annular groove 16, the telescopic rod 11 is pulled out of the mounting groove 10 according to the thickness of the workpiece, and the length of the screw rod 7 and the mounting groove 10 is adjusted by pushing the sliding distance between the telescopic rod 11 and the screw rod 7 to the three groups of claws 4.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

Claims

1. An automatic clamping device for a machine tool, comprising: a clamp (1) for clamping a workpiece;

The method is characterized in that:

The chuck (2) is rotatably arranged in the clamp (1);

The first sliding grooves (3) are formed in three groups, and the three groups of the first sliding grooves (3) are formed in the front side of the clamp (1);

The clamping jaws (4) are provided with three groups, the three groups of clamping jaws (4) are movably inserted into the three groups of first sliding grooves (3), and the rear sides of the three groups of clamping jaws (4) are meshed with the front sides of the chucks (2);

The automatic clamping assembly is rotatably installed in the clamp (1), and is used for adjusting and clamping when a workpiece is inserted into the clamp (1) and the three clamping jaws (4).

2. An automatic clamping device for a machine tool according to claim 1, characterized in that: the automatic clamping assembly comprises a gear (5), the gear (5) is rotatably installed in the clamp (1), the gear (5) is meshed with the inner wall of the chuck (2), a threaded hole (6) is formed in the gear (5), a screw (7) is movably inserted in the threaded hole (6), and a movable groove (9) is formed in the rear end of the clamp (1).

3. An automatic clamping device for machine tools according to claim 2, characterized in that: four groups of protruding blocks (8) are fixedly arranged at the rear end of the screw rod (7), and the four groups of protruding blocks (8) are matched with the outer wall of the movable groove (9).

4. An automatic clamping device for machine tools according to claim 2, characterized in that: the novel telescopic screw is characterized in that a mounting groove (10) is formed in the screw (7), a telescopic rod (11) is movably inserted in the mounting groove (10), a nut (12) is sleeved on the front end of the screw (7) through threads, and a cross-shaped groove is formed in the opening of the front end of the screw (7).

5. An automatic clamping device for a machine tool as recited in claim 4, wherein: the surface of the telescopic rod (11) is provided with scale values.

6. An automatic clamping device for a machine tool according to claim 1, characterized in that: an annular groove (16) is formed in the clamp (1), a mounting ring (13) is fixedly mounted at the rear end of the chuck (2), the mounting ring (13) is movably inserted into the annular groove (16), second sliding grooves (14) are formed in the inner walls of the upper side and the lower side of the annular groove (16) and the inner wall and the outer wall of the mounting ring (13), and a plurality of groups of balls (15) are movably mounted in the second sliding grooves (14).