Inner gear ring roller path intermediate frequency hardening mould

Abstract

The invention discloses an inner gear ring roller path intermediate frequency hardening mould, belonging to a hardening mould. The inner gear ring roller path intermediate frequency hardening mould comprises a transition plate (1) and a round pressure plate (2), wherein the pressure plate (2) is arranged above the transition plate (1), the hardening mould also comprises a prestress cone (3), wherein the prestress cone (3) is arranged between the pressure plate (2) and the transition plate (1), the pressure plate (2) is fixed with the transition plate (1) by virtue of a bolt I (4), and the bolt I (4) penetrates the prestress cone (3), the transition plate (1) is also fixed with the prestress cone (3) by virtue of a bolt II (5); and maximum diameter of the pressure plate (2) is more than that of the prestress cone (3). The inner gear ring roller path intermediate frequency hardening mould provided by the invention has simple structure, has obvious effect in a hardening processing process of an inner gear ring, can be produced in an industrialized manner and is applicable to popularization and application in hardening processing of the inner gear ring.

Description

technical field [0001] The invention relates to a quenching die, in particular to an intermediate frequency quenching die for the raceway of an inner ring gear. Background technique [0002] In the field of parts processing, in order to improve the strength of the contact surface of some workpieces, medium and high frequency induction hardening is often used in industrial production. This processing technology can not only improve the surface strength of the workpiece, but also not affect the toughness of the workpiece matrix. , and the cost is low; but because of the huge internal stress caused by heating and structural transformation during the quenching process, especially the intermediate frequency heating and structural transformation are carried out locally, this will cause the internal stress of the workpiece to be unbalanced, resulting in quenching deformation and affecting Workpiece size and precision. The ring gear groove in the part processing is continuously que...

AI Technical Summary

Problems solved by technology

However, when some special processes require that the teeth must be quenched first and then the raceway can be quenched, the deformation of the ring gear is relatively large due to the superimposition of the two quenching deformations on the teeth

Especially when the thin-walled asymmetrical raceway products are quenched, the loss of tooth precision is astonishing

[0003] At present, free quenching is used for the raceway quenching of thin-walled internal ring gears. During free quenching, due to the asymmetry of the product structure and local continuous heating during quenching, the ring gear produces large elliptical deformation and taper deformation after quenching. , which in turn affects the manufacturing accuracy of the final product, which causes the loss of processing accuracy in the early stage. To meet the requirements of the product drawings, it is necessary to increase the gear grinding and other processes, and the production cycle of the gear grinding and other processes is long, the equipment is expensive, and the processing accuracy is high. cost, resulting in serious waste

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