Ultra lapping machining centering fixture for bearing inner ring roller

Abstract

The invention relates to an ultra lapping machining centering fixture for bearing inner ring roller, the thin wall sleeve is opened with an inner ring-shaped groove and sleeved outside the fixture body, the connection mode between the thin wall sleeve and the fixture body is the interference fit connection, the inner ring-shaped groove of the thin wall sleeve, the outer ring-shaped groove of the fixture body and the mobile column are respectively poured with the liquidity plastic, the magnitude of interference delta of the interference fit mode between the thin wall sleeve and the fixture body is 0.010 to 0.012mm, the wall thickness S between the inner wall of the inner ring-shaped groove of the thin wall sleeve and the outer wall of the thin wall sleeve is 0.5 to 0.7mm. The ultra lapping machining centering fixture for bearing inner ring roller is good in elasticity, good in deformation uniformity and high in centering precision and is especially suitable for centering and clamping the bearing inner ring. The coaxiality and airtightness of the thin wall sleeve and the fixture body can be guaranteed. The thin wall sleeve with a taper angle R for 0.5-1.5 degrees is adopted, and then the side of the bearing inner ring and the locating block can be tightly located while centering and clamping the bearing inner ring and the axial direction locating precision of the bearing inner ring is raised.

Description

technical field [0001] The invention relates to a centering fixture for processing the raceway of a bearing inner ring, in particular to a centering fixture for superfinishing processing. Background technique [0002] At present, there are three types of centering fixtures used for superfinishing of bearing inner ring raceway: roller rod type, centerless type and hydraulic centering type. Roller type, such as figure 1 As shown, the inner ring of the bearing is supported and centered by double rollers. The pressure of the oil stone makes the inner ring of the bearing close to the double rollers. The double rollers drive the inner ring of the bearing to rotate through the friction between the inner ring of the bearing and the roller. The lack of positioning on the end face of the inner ring of the bearing will easily cause a sideways error between the center of the inner ring raceway of the bearing and the end face of the inner ring of the bearing. The positioning datum and t...

AI Technical Summary

Problems solved by technology

The liquid medium elastic centering fixture uses liquid plastic as the medium, and the elastic centering fixture is generally used for cylinders and other parts, and has not been used in bearing processing equipment.

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