CN110586974A

CN110586974A - Self-adaptive cone angle chuck

Info

Publication number: CN110586974A
Application number: CN201910933534.2A
Authority: CN
Inventors: 郭永波
Original assignee: HAINING AUTOMANN PARTS CO Ltd
Current assignee: HAINING AUTOMANN PARTS CO Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2019-12-20

Abstract

The invention discloses a self-adaptive taper angle chuck, which comprises a chuck seat and a clamping jaw, wherein the clamping jaw comprises a clamping jaw I and a clamping jaw II, the clamping surfaces of the clamping jaw II and a conical workpiece are set to be conical cambered surfaces, and an anti-skidding clamping nail is arranged on each conical cambered surface; jack catch I and jack catch II pass through coupling assembling fixed connection, just establish convex sphere on the jack catch I, be equipped with on the jack catch II with convex sphere accordant connection's concave sphere. The invention has simple and clear operation, low loss of processing accessories and improved production benefit; the waste of the clamping jaws can be reduced, and the safety and the stability are also improved.

Description

Self-adaptive cone angle chuck

Technical Field

The invention relates to a clamping component for mechanical equipment, in particular to a self-adaptive taper angle chuck.

Background

At present, the rapid development of the manufacturing industry cannot be realized, and particularly, the use of a numerical control lathe is realized. The chuck is an arm which can not be used for clamping a workpiece by a machine tool. The chuck has certain requirements on the shape clamping of a workpiece to be machined, the number of jaws is required to be corresponding to the number of the multi-edge shapes, and a clamping surface is parallel to the surface of the workpiece, so that the workpiece with a taper angle can be machined only by using an ejector pin.

When the existing workpiece is a forged piece of an automobile hub bearing mandrel, the shape of the forged piece is complex in order to save cost, and the workpiece is easy to form in the forging process due to the cone angle design. However, the chuck is required to be turned to adapt to a plurality of clamping surfaces of the workpiece when the workpiece is clamped, the workpiece is required to be propped by the ejector pin when the workpiece is turned, and the inner hole of the workpiece cannot be machined due to the reason of the ejector pin. The universal clamping jaw is a cuboid, a conical workpiece cannot be directly clamped, the workpiece can be clamped only by turning the workpiece out of an inclined plane similar to the workpiece, and the clamping process also needs to assist the ejector pin to fix the workpiece to prevent the workpiece from falling out.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a self-adaptive taper angle chuck which is used for clamping a taper surface workpiece, is simple and clear to operate, has low loss of machining accessories and improves the production benefit; the waste of the clamping jaws can be reduced, and the safety and the stability are also improved.

The technical scheme adopted by the invention for solving the technical problem is as follows: a self-adaptive taper angle chuck comprises a chuck seat and a clamping jaw, wherein the clamping jaw comprises a clamping jaw I and a clamping jaw II, the clamping surfaces of the clamping jaw II and a conical workpiece are set to be conical cambered surfaces, and anti-skidding clamping jaws are arranged on the conical cambered surfaces; jack catch I and jack catch II pass through coupling assembling fixed connection, just establish convex sphere on the jack catch I, be equipped with on the jack catch II with convex sphere accordant connection's concave sphere.

Preferably, the connecting assembly comprises a connecting piece and a connecting screw rod, and the jaw I and the jaw II are respectively provided with a mounting groove for mounting the connecting piece and a mounting hole for locking the connecting screw rod.

As a further improvement, a spring piece which is mounted and limited with the clamping jaw I is arranged on the upper end face of the clamping jaw II, and the spring piece is fixed with the clamping jaw II through a bolt.

As a further improvement, the antiskid clamping nail is connected with an adjusting screw rod.

The invention designs the existing claw into two parts, the clamping force bearing surfaces of the claw I and the claw II are designed into a convex spherical surface and a concave spherical surface, the design enables the force bearing to change along with the change of the inclined surface and the direction of the force, and the characteristic of the spherical surface is that the force is applied. To the machined part in batches, according to the product cone angle independent design jack catch II on the centre gripping inclined plane that corresponds, carve the serial number, in order to ensure the safety of centre gripping, still designed anti-skidding bail on the cone angle cambered surface, the nail point is absorbed in the work piece during the centre gripping, and the centre gripping is more firm like this, and supplementary thimble also can be saved.

The invention does not need to reserve a clamping platform when designing a workpiece blank or change a clamping jaw to clamp workpieces with different taper angles on a machine tool clamping part, and a machined workpiece can be firmly clamped without a thimble. And the processing error caused by the sliding of the clamping jaws can be avoided. The end jump of a workpiece requires very high size, and almost zero error can be achieved.

The invention has the advantages that when clamping the conical surface workpiece, the operation is simple, the loss of the processing accessory is low, and the production benefit is improved; the waste of the clamping jaws can be reduced, and the safety and the stability are also improved. The limiting spring piece is used for enabling the spherical centers of the two spherical surfaces of the clamping jaw I and the clamping jaw II to be staggered by a certain distance, and the workpiece is pulled back to be tightly attached to the chuck by the staggered distance in the process of clamping the workpiece, so that gapless positioning is completed, and the machining precision is improved. The setting of adjusting screw can be after anti-skidding bail has wearing and tearing, through adjusting screw adjustment anti-skidding bail expose the length of toper cambered surface.

Drawings

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

Fig. 2 is a schematic structural diagram of a jaw i according to an embodiment of the invention.

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

FIG. 4 is a schematic diagram of a jaw I and a jaw II after being installed according to the embodiment of the invention.

Fig. 5 is a schematic mounting diagram of a jaw ii according to an embodiment of the invention.

FIG. 6 is a schematic view of a tapered workpiece being clamped according to an embodiment of the present invention.

The invention is further described below with reference to the accompanying drawings.

Detailed Description

As shown in the attached figure 1, the self-adaptive taper angle chuck comprises a chuck base 1 and a clamping jaw, wherein the clamping jaw comprises a clamping jaw I2 and a clamping jaw II 3, the clamping surfaces of the clamping jaw II 3 and a conical workpiece 15 are set to be conical arc surfaces 6, anti-skidding clamping nails 11 are arranged on the conical arc surfaces 6, the nail tips sink into the workpiece during clamping, so that the clamping is firmer, auxiliary ejector pins can be omitted, and the anti-skidding clamping nails 11 are connected with an adjusting screw 14; jack catch I2 and jack catch II 3 pass through coupling assembling fixed connection, coupling assembling includes connecting piece 4 and connecting screw 5, be equipped with mounting groove 9 of erection joint piece 4 and the mounting hole 10 of locking connecting screw 5 on jack catch I2 and the jack catch II 3 respectively.

And a convex spherical surface 7 is arranged on the jaw I2, and a concave spherical surface 8 which is connected with the convex spherical surface 7 in a matching way is arranged on the jaw II 3. Be equipped with on II 3 up end of jack catch with jack catch I2 installation spacing spring leaf 12, spring leaf 12 is fixed with jack catch II 3 through bolt 13. Two spherical surfaces of the clamping jaw I2 and the clamping jaw II 3 can be pulled back when the chuck is clamped through the limiting spring piece, so that a workpiece cannot generate a binding surface to leave the clamping jaw, and gapless positioning is realized.

Claims

1. The utility model provides a self-adaptation cone angle chuck, includes chuck seat (1) and jack catch, its characterized in that: the clamping jaw comprises a clamping jaw I (2) and a clamping jaw II (3), the clamping surfaces of the clamping jaw II (3) and the conical workpiece (15) are set to be conical cambered surfaces (6), and anti-skidding clamping nails (11) are arranged on the conical cambered surfaces (6); jack catch I (2) and jack catch II (3) pass through coupling assembling fixed connection, just establish convex sphere (7) on jack catch I (2), be equipped with on jack catch II (3) with convex sphere (7) accordant connection's concave sphere (8).

2. An adaptive taper angle chuck according to claim 1, wherein: coupling assembling includes connecting piece (4) and connecting screw (5), be equipped with mounting groove (9) of erection joint spare (4) and mounting hole (10) of locking connecting screw (5) on jack catch I (2) and jack catch II (3) respectively.

3. An adaptive taper angle chuck according to claim 1, wherein: be equipped with on jack catch II (3) the up end with jack catch I (2) installation spacing spring leaf (12), spring leaf (12) are fixed with jack catch II (3) through bolt (13).

4. An adaptive taper angle chuck according to claim 1, wherein: the anti-skidding clamp (11) is connected with an adjusting screw rod (14).