Equipment for carrying out precision machining on bearing ring through Laval nozzle by assisting in abrasive jet flow

Abstract

The invention provides equipment for carrying out precision machining on a bearing ring through a Laval nozzle by assisting in an abrasive jet flow. The equipment consists of a bearing ring machiningpart, an auxiliary machining part, an abrasive flow liquid supply part, an abrasive flow waste liquid collection part, an installation table and a bracket. The equipment has the advantages that the bearing ring adopts double-crank-roller-type fixing, the double crank rollers can freely regulate an initial angle, and therefore, the bearing ring is reliably fixed and is conveniently assembled and disassembled. During machining, the bearing ring rotates, the Laval nozzle which is aslant installed is cooperated to serve as an abrasive flow inlet, and the abrasive flow is accelerated to be injectedto the outer surface of the bearing ring. Since the abrasive flow inlet is injected through an inclination way, a material removal rate is improved, impact injuries to the surface of the bearing ringis reduced, precision machining efficiency is effectively improved, and in addition, the abrasive flow accumulated in a machining groove part can carry out all-around precision machining on the groove and the outer surface of the bearing ring under the rotation of the bearing ring.

Description

technical field [0001] The invention relates to the technical field of abrasive flow processing, in particular to a device for precision machining bearing rings by a Laval nozzle assisting abrasive jet. Background technique [0002] The groove of the ring is the working surface of the rolling bearing that bears the load when it is in use. The quality of the processing of the bearing ring directly affects the working performance and life of the bearing when it is used. [0003] At present, the precision machining methods of bearing rings include fixed abrasive grinding, oilstone grinding, electrochemical processing technology, electrolytic processing technology, etc. Among them, the ultra-fine grinding technology of bearing rings using fine-grained grinding wheels has the characteristics of low linear speed and can avoid machining The metamorphic layer produced on the surface due to grinding heat can improve the dimensional accuracy and shape accuracy of the processed workpie...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of complex precision machining process, low efficiency and high production cost of traditional bearing rings, and to provide a Laval nozzle-assisted abrasive jet precision machining of bearing rings. The advantages of the present invention are: The bearing ring is fixed by the double crank roller type, the double crank roller can freely adjust the initial angle, the fixing is reliable and the assembly and disassembly are convenient. The flow is accelerated and sprayed on the outer surface of the bearing ring, and the entrance of the abrasive particle flow is incident in an oblique manner, which improves the material removal rate, reduces the impact damage to the surface of the bearing ring, and effectively improves the efficiency of precision machining. Under the rotation of the bearing ring, the abrasive particle flow can carry out all-round precision machining on the groove and outer surface of the bearing ring

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