Process for machining thin-walled precision internally-toothed sleeve with flange, cone and transition ring

Abstract

The invention relates to process for machining a thin-walled precision internally-toothed sleeve with a flange, a cone and a transition ring. High-strength alloy structural steel of a blank is forged, an integrally-toothed surface is in nitridation treatment in a heat treatment manner, the depth of a nitridation layer ranges from 0.3mm to 0.5mm, hardness of the surface is equal to or higher than HV650, and hardness of a core is HB283-341; ultrasonic flow detection is carried out after forging rough turning, forming is basically realized by means of semi-finish turning after thermal refining, allowance is reserved for fine turning, and primary stress elimination processing is realized; a lightening hole is machined on the cone after primary fine turning, and secondary stress elimination processing is realized; internal teeth are inserted after secondary fine turning, and tertiary stress elimination processing is realized; a radial hole on the transition ring and a connecting hole on the flange are machined after tertiary fine turning, and fourth stress elimination processing is realized; and the teeth are roughly ground after a reference surface is ground by the aid of a vertical grinder, the teeth are finely ground after nitridation treatment is finished and the reference surface is finely ground by the vertical grinder, magnetic particle testing is carried out after the teeth are ground, and demagnetization is realized after the magnetic particle testing. A work procedure with higher generated machining stress is divided into four stages to realize machining, the stress elimination processing is carried out after machining of each stage is finished, and the internal teeth are respectively roughly and finely ground before and after the nitridation treatment, so that the quality of products is guaranteed.

Description

technical field [0001] The invention relates to a processing technology of a transmission part, in particular to a machining technology of a thin-wall precision internal gear sleeve with a flange, a cone and a transition ring. Background technique [0002] The inner tooth sleeve is one of the most basic components in the transmission component coupling, which plays the role of transmitting motion and torque. With the rapid development of science and technology, thin-walled precision internal gear sleeves with flanges, cones and transition rings are widely used in high-speed transmission due to their light weight, compact structure, high strength, and good flexibility. The thin-wall precision inner gear sleeve with flange, cone and transition ring is one of the main parts of high-speed transmission components. Its processing quality is very important. [0003] In the past, the machining method of inner gear sleeves was generally quenched and tempered, followed by gear shapi...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a thin-walled gear with flange, cone and transition ring that solves the problem of deformation caused by processing stress and the problem of gear precision reduction in the nitriding process, and ensures stable and reliable processing quality. Precision internal gear sleeve processing technology

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