CN201455774U

CN201455774U - Grinding wheel for grinding inner raceways of self-aligning roller bearings

Info

Publication number: CN201455774U
Application number: CN2009200906843U
Authority: CN
Inventors: 张合军; 于法明; 林怡; 杨超男; 屯涌泉; 李定宇
Original assignee: XINXIANG TIANLI MECHANICAL Manufacturing Co Ltd
Current assignee: XINXIANG TIANLI MECHANICAL Manufacturing Co Ltd
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-05-12
Anticipated expiration: 2019-05-27

Abstract

The utility model discloses a grinding wheel for grinding the inner raceways of self-aligning roller bearings. The purpose of the utility model is to provide a grinding wheel for grinding the inner raceways of self-aligning roller bearings, which has the advantages of high grinding precision and low grinding wheel dressing cost. The technical scheme of the utility model is as follows: the grinding wheel comprises a grinding wheel-fixing disk, two grinding wheels and a partition in between are fixed in the grinding wheel disk by bolts, the thickness of the partition is larger than the thickness of the outer end of the arc-shaped surface of the raceway of a ground workpiece, and the radians of the arc-shaped surfaces of the two grinding wheels are equal to the radian of the arc-shaped surface of the inner raceway of the ground bearing. Compared with the prior art, the utility model has the advantages of low grinding wheel dressing cost and high workpiece precision. The utility model is used for bearing processing.

Description

A kind of emery wheel of grinding self-aligning roller bearing inner ring raceway

Technical field:

The utility model relates to a kind of special shape surfacing, particularly a kind of emery wheel of grinding self-aligning roller bearing inner ring raceway.

Background technology:

The inner ring raceway surface of self-aligning roller bearing is that the concaved circular cambered surface of two symmetries is formed, the method of this self-aligning roller bearing inner ring of grinding outer surface has following several method: one, positive and negative filing, after repairing out emery wheel with diamond pen, go out the surface of a side with the end face location grinding of workpiece, again with 180 ° of workpiece upsets with another surface of grinding, location, other end, its shortcoming is, workpiece is located at twice, and low precision, low, this method of efficient can not adapt to required precision height, big needs in batches.The 2nd, the roller grinding method is made roller earlier, remove trimming wheel with roller after, can once wear into workpiece with this emery wheel, efficient height, but that roller is made is complicated, difficulty is big, cost is high, be difficult for guaranteeing precision, grinding face is big, easily vibration influences grinding accuracy.The 3rd, the moulding crush grinding method divides secondary to trim emery wheel with diamond pen earlier, removes grinding work piece with this emery wheel, this method is than the precision height of the first two kind, and the kind of grinding work piece is many, and the method is used widely, but the method still has shortcoming, and emery wheel is repaired by secondary, and precision is relatively poor, diamond pen enters emery wheel interface place and easily clashes into emery wheel, control its anglec of rotation and require sternly, to the width requirement height of emery wheel, the grinding area is big, easily produce chatter mark, influence grinding accuracy.

Summary of the invention:

The purpose of this utility model provides the emery wheel of a kind of grinding accuracy height, a kind of grinding self-aligning roller bearing inner ring raceway that the crushing expense is low.The technical solution of the utility model is, a kind of emery wheel of grinding bearing inner ring raceway, comprise the emery wheel fixed disk, it is characterized in that: two emery wheels and middle dividing plate thereof are by being bolted in the abrasive disc, the thickness of dividing plate is greater than the wall thickness of the raceway curved surfaces outer end of grinding workpiece, and the radian of the curved surfaces of two emery wheels is identical with the radian of the curved surfaces of the bearing inner race raceway that is ground.The utility model has the low and high advantage of workpiece accuracy of crushing expense compared with the prior art.

Description of drawings:

Accompanying drawing is the utility model with the diamond pen trimming wheel with the schematic diagram on this wheel grinding self-aligning roller bearing inner ring raceway surface.

The specific embodiment:

In conjunction with above-mentioned accompanying drawing the utility model is described in detail, two emery wheels that are separated from each other 2 are fixed on (referring to accompanying drawing) on the grinding wheel spindle by bolt with dividing plate 3 and fixed disk 4, arc radius R according to the bearing inner race that is ground (workpiece) raceway face, with diamond pen 5 side face of grinding wheel is trimmed to the arc surface that radius is R, the width H that the width of grinding wheel sidewinders greater than workpiece one.Distance H 2＞H1 (wall thickness of workpiece raceway end) between two emery wheels.

Method with this wheel grinding workpiece arcuate groove surface is, at first with diamond pen with the crushing that separates good after, workpiece to be ground is installed on the magnetic pole of numerically control grinder workpiece spindle front end. when the left side that workpiece moves axially to the inner face of workpiece raceway and right grinding wheel aligns, make the workpiece radial feed to the raceway face grinding, return after reaching size, finish the processing of a raceway face; Make workpiece then when moving left to workpiece right side roller surface and align with the left side grinding wheel, the workpiece radial feed carries out grinding to the right side raceway face, reaches size and returns, and promptly finishes the grinding of a workpiece. and adopt emery wheel of the present utility model that following advantage is arranged:

1, can finish the finishing of emery wheel with diamond pen, and the diamond pen rotational angle is unrestricted,, does not need to repair at twice the dressing efficiency height because two emery wheels are an arc surface.

2, during grinding work piece, the cutting face is little, does not produce chatter mark;

3, clamping location of workpiece, the precision height, the size of workpiece easily guarantees, the production efficiency height.

4, to the grinding wheel width direction require low, do not need to carry out the end face finishing.

Be particularly suitable for processing at Digit Control Machine Tool.

Claims

1. the emery wheel of a grinding bearing inner ring raceway, comprise the emery wheel fixed disk, it is characterized in that: two emery wheels and middle dividing plate thereof are by being bolted in the abrasive disc, the thickness of dividing plate is greater than the wall thickness of the raceway curved surfaces outer end of grinding workpiece, and the radian of the curved surfaces of two emery wheels is identical with the radian of the curved surfaces of the bearing inner race raceway that is ground.