CN211680065U

CN211680065U - Clamping device

Info

Publication number: CN211680065U
Application number: CN201821427410.4U
Authority: CN
Inventors: 秦炜; 黄永飞; 孙鑫; 周文彬; 许锦辉; 王奔奔
Original assignee: Anhui Weineng Motor Co ltd
Current assignee: Anhui Weineng Motor Co ltd
Priority date: 2018-08-30
Filing date: 2018-08-30
Publication date: 2020-10-16
Anticipated expiration: 2028-08-30

Abstract

The utility model provides a clamping device sets up first, two, three jack catchs in the draw-in groove of the carousel that the main shaft links to each other and constitutes three-jaw chuck, and the joint face of second, three jack catchs is first, two outer cambered surfaces, and first, two outer cambered surfaces are arranged and are close on the side and first, two outer cambered surfaces and about the central plane symmetrical arrangement of first jack catch of second, three jack catchs, and first, two outer cambered surfaces are arranged by circumference to radial transition, the camber of first, two outer cambered surfaces coincide with the camber of the transition curved surface of the outer convex part root of bearing inner cup. The utility model discloses well three-jaw chuck has the function of automatic centering, can carry out the alignment to the bearing inner cup fast, and first, two outer cambered surfaces on second, three jaw joint face support and lean on the outer convex part root at the bearing inner cup, have restricted bearing inner cup relative carousel to take place circumferential direction.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of bearing inner cup clamping device, concretely relates to clamping device.

Background

The bearing inner cover is used for fixing and supporting the bearing, so when the processing procedure of the bearing inner cover, a round hole with the same diameter as the bearing needs to be turned. When the bearing inner cover is turned, the bearing inner cover can rotate along with the turntable by the circumferential friction force provided by the clamping force of the clamping jaws of the three-jaw chuck on the bearing inner cover, so that the turning machining is carried out on the bearing inner cover rotating by the turning tool. In order to ensure sufficient circumferential friction, the clamping force of the clamping jaws on the inner bearing cap usually damages the inner bearing cap. And under the condition of adopting the four-jaw chuck, although the requirement on the clamping force of each jaw is relatively small when the four jaws are used for clamping, the bearing inner cover is not easy to damage, the four-jaw chuck needs manual alignment, the correction time is long, and the batch production cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clamping device is convenient for quick alignment centre gripping bearing inner cup, prevents that the relative carousel of bearing inner cup from taking place circumferential direction.

In order to achieve the above object, the present invention provides the following technical solutions: a clamping device is characterized in that a first clamping jaw, a second clamping jaw and a third clamping jaw are arranged in a clamping groove of a rotary table connected with a main shaft to form a three-jaw chuck, clamping surfaces of the second clamping jaw and the third clamping jaw are first cambered surfaces and second cambered surfaces, the first cambered surfaces and the second cambered surfaces are arranged on the adjacent sides of the second clamping jaw and the third clamping jaw, the first cambered surfaces and the second cambered surfaces are symmetrically arranged relative to the central plane of the first clamping jaw, the first cambered surfaces and the second cambered surfaces are arranged in a circumferential radial transition mode, and the curvatures of the first cambered surfaces and the second cambered surfaces are matched with the curvature of a transition curved surface at the root of.

Among the above-mentioned technical scheme, the three-jaw chuck has the function of self-centering, can carry out the alignment to the bearing inner cup fast, and first, two outer cambered surfaces on second, three jaw joint face are supported and are leaned on the outer convex part root of bearing inner cup, have restricted that the bearing inner cup takes place circumferential direction relative to the carousel.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is the schematic view of the structure of the assembly position of the present invention

Detailed Description

The present invention will be further explained with reference to fig. 1 and 2:

a clamping device is characterized in that a first clamping jaw 20, a second clamping jaw 30, a third clamping jaw 40 and a third clamping jaw 30 are arranged in a clamping groove of a rotary disc 10 connected with a main shaft to form a three-jaw chuck, clamping surfaces of the second clamping jaw 30 and the third clamping jaw 40 are first

outer arc surfaces

31 and 41, the first outer arc surfaces 31 and the second outer arc surfaces 41 are arranged on the adjacent sides of the second clamping jaw 30 and the third clamping jaw 40, the first outer arc surfaces 31 and the second outer arc surfaces 41 are symmetrically arranged relative to the central plane of the first clamping jaw 20, the first outer arc surfaces 31 and the second outer arc surfaces 41 are arranged in a transition mode from the circumferential direction to the radial direction, and the curvatures of the first outer arc surfaces 31 and the second outer arc surfaces 41 are matched with the curvature. The three-jaw chuck has the function of automatic centering, can carry out the alignment to the bearing inner cup fast, and first, two extrados on second, three-

jaw

30, 40 joint face are supported and are leaned on the outer convex part root of bearing inner cup, and second jack catch 30 has restricted the relative carousel 10 clockwise rotation of bearing inner cup, and third jack catch 40 has restricted the relative carousel 10 anticlockwise rotation of bearing inner cup to the synchronous rotation of bearing inner cup and three-jaw chuck has been guaranteed.

Preferably, the engaging surface of the first claw 20 in the circumferential direction is a concave arc surface 21, and the curvature of the concave arc surface 21 matches the curvature of the convex portion of the bearing inner cap. The concave arc surface of the jaw clamping surface is matched with the convex part of the bearing inner cover, so that the circumferential rotation of the bearing inner cover relative to the rotary table 10 is limited.

Claims

1. The utility model provides a clamping device, sets up first, two, three jack catchs (20, 30, 40) in the draw-in groove of carousel (10) that the main shaft links to each other and constitute three-jaw chuck, its characterized in that: the clamping surfaces of the second clamping jaw and the third clamping jaw (30 and 40) are first extrados (31 and 41), the first extrados (31 and 41) and the third clamping jaw are arranged on the adjacent sides of the second clamping jaw and the third clamping jaw (30 and 40), the first extrados (31) and the extrados (41) are symmetrically arranged relative to the central plane of the first clamping jaw (20), the first extrados (31) and the extrados (41) are arranged in a transition mode from the circumferential direction to the radial direction, and the curvatures of the first extrados (31 and extrados (41) are matched with the curvature of the transition curved surface of the root of the outer convex part of the bearing inner cover.