CN202411915U

CN202411915U - Special fixture for processing external diameter surfaces of bearings

Info

Publication number: CN202411915U
Application number: CN2011204900839U
Authority: CN
Inventors: 黄可富; 钟成虎; 钟小平
Original assignee: NEIJIANG FANHANG NAIL MANUFACTURE CO Ltd
Current assignee: NEIJIANG FANHANG NAIL MANUFACTURE CO Ltd
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-09-05
Anticipated expiration: 2021-12-01

Abstract

The utility model discloses a special fixture for processing external diameter surfaces of bearings. The special fixture comprises a three-jaw self-centering chuck, and a core shaft of which the back end is clamped by the three-jaw self-centering chuck, wherein a step is arranged at the front end of the core shaft; a pressure plate is sleeved on a small diameter section of the step; and a gland nut is further arranged on the core shaft at the front end of the pressure plate through screw threads. The special fixture has the advantages of firmness in clamping, no slippage and no deformation of outer rings; and the quality of produced products is good and the reject rate is low.

Description

The special fixture of machining bearing external diameter surface

Technical field

The utility model relates to a kind of special fixture that is used for the machining bearing external diameter surface.

Background technology

The anchor clamps that when the machining bearing external diameter surface, use at present, as shown in Figure 1, comprise the three-jaw self-centering chuck 8 of clamp axis bearing outer-ring 7, the rolling center 10 that contacts with bearing inner race 9; Owing to need reserve Working position, the part that three-jaw self-centering chuck 8 can only clamp axis bearing outer-ring 7, its chucking power is less; Be prone to skid; Poor product quality, and the supporting role of 10 pairs of bearing inner races 9 of rolling center is limited, and bearing outer ring 7 is thinner usually; Add and be prone to man-hour cause fragmentation, fracture, scrap serious.

The utility model content

The purpose of the utility model is the above-mentioned deficiency to prior art, and a kind of special fixture of machining bearing external diameter surface is provided, and it has, and clamping is firm, non-slip, the indeformable advantage in outer ring, and the good product quality, the percent defective that process are low.

For achieving the above object; The special fixture of the machining bearing external diameter surface of the utility model; Comprise three-jaw self-centering chuck, it is characterized in that also comprising the mandrel of rear end by the three-jaw self-centering chuck clamping, the front end of said mandrel is provided with step; On the path section of step, be set with pressing plate, on the mandrel of pressing plate front end, also be provided with clamp nut through screw thread.

During use; Bearing is loaded between the step end face and pressing plate of mandrel, makes pressing plate be close to bearing, realize that mandrel centering, end face clamp through clamp nut; Have that clamping is firm, non-slip, the indeformable advantage in outer ring, the good product quality, the percent defective that process are low;

As the further improvement of the utility model, be equipped with the slot to make way corresponding on the front end face of said mandrel step and the rear end face of pressing plate with bearing inner race; Make bearing inner race free to rotate, all chucking powers all act on the outer ring, can further improve the fastness of clamping, reduce race deformation;

In sum, the utlity model has that clamping is firm, non-slip, the indeformable advantage in outer ring, the good product quality, the percent defective that process are low.

Description of drawings

Fig. 1 is the front view of the anchor clamps of existing machining bearing external diameter surface.

Fig. 2 is the front view of the utility model embodiment.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed explanation.

By shown in Figure 1; The special fixture of this machining bearing external diameter surface; Comprise three-jaw self-centering chuck 1, the rear end mandrel 2 by three-jaw self-centering chuck 1 clamping, the front end of said mandrel 2 is provided with step, on the path section of step, is set with pressing plate 3; On the mandrel of pressing plate 3 front ends, also be provided with clamp nut 4, be equipped with the slot to make way corresponding 5 on the front end face of said mandrel step and the rear end face of pressing plate with bearing inner race through screw thread.

During use; Bearing 6 is loaded between the step end face and pressing plate 3 of mandrel 2, makes pressing plate 3 be close to bearing 6, realize that mandrel centering, end face clamp through clamp nut 4; Bearing inner race is free to rotate; All chucking powers all act on the outer ring, have that clamping is firm, non-slip, the indeformable advantage in outer ring, and the good product quality, the percent defective that process are low.

Claims

1. the special fixture of a machining bearing external diameter surface; Comprise three-jaw self-centering chuck; It is characterized in that also comprising the mandrel of rear end by the three-jaw self-centering chuck clamping; The front end of said mandrel is provided with step, on the path section of step, is set with pressing plate, on the mandrel of pressing plate front end, also is provided with clamp nut through screw thread.

2. the special fixture of machining bearing external diameter surface according to claim 1 is characterized in that being equipped with the slot to make way corresponding with bearing inner race on the rear end face of front end face and pressing plate of said mandrel step.