Machining method of large modulus inner gear ring

Abstract

The invention relates to a machining method of a large modulus inner gear ring, which relates to the field of machining, in particular to a machining method of a large modulus inner gear ring. The machining method comprises the following steps: roughly turning the inner gear ring, remaining machining allowance of 6mm to 8mm on the top circle of each tooth and two ends of each tooth part, remaining machining allowance of 10mm to 12mm on other parts, marking a benchmark surface, and guaranteeing a surface roughness value Ra to be 6.3 micrometers; detecting a flaw, and ultrasonically detecting the flaw of the gear ring so as to enable the gear ring to meet the drawing requirement; positioning the gear ring on a machine tool by adopting the benchmark surface, centering the top circles of the teeth, roughly milling the teeth by utilizing a finger-shaped milling cutter, and remaining machining allowance of 5mm to 6mm for each tooth thickness and tooth depth; tempering according to the requirement; centering by adopting the top circle of each tooth, finely turning the size of each part, and marking on the benchmark surface; positioning the gear ring on the machine tool by adopting the benchmark surface, centering the top circles of the teeth, aligning the knife strictly to the center of a tooth groove by ensuring uniform cutter penetration on two side surfaces of the teeh, and inserting the teeth to meet the required size of a drawing. By adopting the machining method, the service life of the gear ring can be prolonged, the production efficiency is high, the abrasion to a tooth insertion knife is alleviated, the production period is shortened, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method for a large modulus inner ring gear. Background technique [0002] As a very widely used part in the machinery industry, the internal ring gear has a direct impact on the operating life of the mechanical equipment and indirectly affects the economic benefits, so the quality of the internal gear ring is usually processed by gear shaping. However, for the large modulus internal gear, the gear shaping cycle is longer, the tool wears faster, and the production cost is higher. Moreover, because the hardenability of the heat treatment does not reach the root of the tooth, it will inevitably cause the internal gear to be damaged during use. Insufficient root strength leads to twisting and deformation, leading to failure, and the production cycle is long, so the qualified rate of the products produced in this way is low, the production raw materials are wasted, an...

AI Technical Summary

Problems solved by technology

However, for the large modulus internal gear, the gear shaping cycle is longer, the tool wears faster, and the production cost is higher. Moreover, because the hardenability of the heat treatment does not reach the root of the tooth, it will inevitably cause the internal gear to be