Electromagnetic coreless fixture with locating ring capable of axially floating

Abstract

The invention discloses an electromagnetic coreless fixture with a locating ring capable of axially floating. Above a main shaft are arranged an inner magnetic pole, a magnetic shield ring, an inner floating ring and an outer floating ring, and on the inner floating ring is arranged a conical surface pocket provided with a ceramic ball. The inventive electromagnetic coreless fixture can avoid direct fixation of the locating ring on the main shaft to form rigid connection, which leads to direct influence of main shaft vibration and side swing on stability of the locating ring and a workpiece mounted on the locating ring; and effectively reduce the adverse effects of axial movement of the main shaft and workpiece outer diameter vertical deviation through floating connection formed between the inner and the outer floating ring by pocket connection, improve workpiece machining precision, effectively improve product quality and yield and production efficiency and effectively lower production costs.

Description

[0001] technical field [0002] The invention relates to a fixture, in particular to an electromagnetic centerless fixture with an axially floating positioning ring. Background technique [0003] When the bearing ring is ground on the outer groove grinding machine for the outer groove of the bearing outer ring such as textile bearings and water pump bearings, the conventional electromagnetic centerless fixture configured on the machine tool is used. Since the workpiece width is higher than the diameter, it is generally about 40mm. The verticality of the ferrule end to the outer diameter is very high (process specification ≤0.005mm), which is quite difficult for the process of grinding the plane and the outer diameter of the previous process of grinding the groove, and even often occurs that the outer diameter is opposite to the end face. The vertical difference is out of tolerance, resulting in a large number of unqualified products, which seriously affects the productio...

AI Technical Summary

Problems solved by technology

[0003] When the bearing ring is ground on the outer groove grinding machine for the outer groove of the bearing outer ring such as textile bearings and water pump bearings, the conventional electromagnetic centerless fixture configured on the machine tool is used. Since the workpiece width is higher than the diameter, it is generally about 40mm. The verticality of the ferrule end to the outer diameter is very high (process specification ≤0.005mm), which is quite difficult for the process of grinding the plane and the outer diameter of the previous process of grinding the groove, and even often occurs that the outer diameter is opposite to the end face. The vertical difference is out of tolerance, resulting in a large number of unqualified products, which seriously affects the production efficiency and product quality stability of the grinding outer groove

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