Novel spiral bevel gear tooth dry cutting method

Abstract

The invention relates to the technical field of spiral bevel gears, and discloses a novel spiral bevel gear tooth dry cutting method. The method comprises the following steps of S1, manufacturing of a gear blank; S2, heat treatment of the gear blank; S3, tooth cutting; S4, strengthening of a gear workpiece, specifically, the bevel gear workpiece is subjected to low-temperature nitrocarburizing in the atmosphere containing active nitrogen and carbon atoms, and the active nitrogen and carbon atoms are absorbed by the surface of the workpiece; S5, finish machining of mounting and connecting parts; and S6, gear lapping and phosphating of the workpiece, specifically, gear lapping is conducted on the workpiece, gear grinding is not adopted as a tooth shape machining means, and phosphating treatment is conducted on the workpiece after gear lapping is accomplished. According to the novel spiral bevel gear tooth dry cutting method, the bevel gear workpiece is subjected to low-temperature nitrocarburizing in the atmosphere containing the active nitrogen and carbon atoms, and therefore the hardness, the abrasion resistance, the fatigue strength and the seizure resistance of workpiece steel are improved; and the workpiece is subjected to gear lapping, and therefore the situation that gear lapping can improve the meshing quality and reduce the tooth surface roughness and the meshing noise is guaranteed.

Description

technical field [0001] The invention relates to the technical field of spiral bevel gears, in particular to a novel method for dry cutting gears of spiral bevel gears. Background technique [0002] There are two types of spiral bevel gears, one is spiral bevel gear, the axis of the large wheel and the axis of the small wheel intersect; the other is the hypoid spiral bevel gear, the axis of the large wheel and the axis of the small wheel have a certain offset distance. [0003] Spiral bevel gear is a kind of transmission part that can transmit smoothly and with low noise according to a stable transmission ratio. It has different names in different regions, and is also called spiral bevel gear, spiral bevel gear, spiral bevel bevel gear, and arc bevel gear. , Spiral bevel gear, etc. Spiral bevel gears have high transmission efficiency, stable transmission ratio, large arc overlap coefficient, high load capacity, smooth transmission, reliable operation, compact structure, ener...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a new type of dry cutting method for spiral bevel gears, which solves the problem that in the process of dry cutting of spiral bevel gears, the work piece of the spiral bevel gear cannot be strengthened and cannot guarantee that the work piece should be The hardness, wear resistance, fatigue strength and anti-seizure performance of the spiral bevel gear cannot be reduced at the same time, and the early severe wear resistance of the gear cannot be guaranteed.