Nonmagnetic bearing, centerless fixture and nonmagnetic bearing manufacturing method

Abstract

The invention provides a nonmagnetic bearing and relates to the technical field of bearings. The nonmagnetic bearing comprises an outer ring, an inner ring, a holder and a ceramic ball. A first grooveis formed in the circumferential direction of the center of the inner diameter of the outer ring. A second groove matched with the first groove is formed in the circumferential direction of the center of the outer diameter of the inner ring. The ceramic ball is fixed between the first groove and the second groove in a spaced mode through the holder. The curvature coefficient of the first groove is larger than that of the second groove. The curvature of the first groove is 0.525-0.510. the curvature of the second groove is 0.515-0.505. the inner ring and the outer ring are improved to be madeof nonmagnetic materials, the curvature coefficients of the first groove of the outer ring and the second groove of the inner ring are lowered, thus the movement track of the ceramic ball in the normal direction of the contact position of the ceramic ball and the outer ring is improved, bearing vibration is lowered, and then noise generated by vibration of a wireless charging rotor rotating at a high speed is lowered. The invention further provides a centerless fixture used for machining the nonmagnetic bearing and a manufacturing method of the nonmagnetic bearing.

Description

technical field [0001] The invention relates to the technical field of bearings, and more specifically, to a non-magnetic bearing, a centerless clamp and a manufacturing method of the non-magnetic bearing. Background technique [0002] The promotion and use of electric vehicles has become one of the topics that people are most concerned about. In order to promote the development of new energy vehicles and solve the problem that the connection and maintenance of wired charging lines are cumbersome and expensive, more and more companies have carried out technical research on wireless charging. The core principle is to use the principle of electrode coupling to conduct near Distance wireless transmission. One of the coupling methods is that the terminal coupler rotates at a high speed after being powered on, and couples with the other coupler paired with the high-speed rotating end to generate a current after high-speed rotation. This generated current is one of the best optio...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the high-speed rotating wireless charging rotor will generate vibration and noise due to the poor structural design and manufacturing quality of the ceramic balls and inner and outer rings of the deep-groove ceramic ball non-magnetic bearing after a large number of wireless charging systems are installed in the garage, the present invention provides a A non-magnetic bearing, made of non-magnetic materials, including: an outer ring, an inner ring, a cage and ceramic balls, a first groove is arranged in the circumferential direction of the center of the inner diameter of the outer ring, and a first groove is arranged in the circumferential direction of the center of the outer diameter of the inner ring. The groove fits the second groove, and the ceramic ball is fixed between the first groove and the second groove at intervals through the cage, wherein the curvature coefficient of the first groove is greater than the curvature coefficient of the second groove, and the first groove The curvature coefficient of the groove is 0.525-0.510, and the curvature coefficient of the second groove is 0.515-0.505

Images