Precision forging plastic forming process for inner gear ring in planetary reducer

Abstract

The invention discloses a precision forging plastic forming process for an inner gear ring in a planetary reducer. The precision forging plastic forming process includes the following steps: (1), warm forging plastic forming is carried out; (2), normalizing, reforming, sand blasting, phosphating, surface saponification and treatment are carried out; and (3), cold forging plastic forming is carried out. By means of the process, a product is stable in quality, accumulative errors among tooth profiles are small, the rate of finished products is high, the working efficiency is improved, and the production cycle is short. A large amount of machining methods that a machine tool is adopted to carry out machining after hot forging are replaced, work quantities of machine tool machining are reduced, not only is the precision requirement met, but also the production cost is reduced and the production cycle is shortened, and meanwhile, the process also meets the trend of development of the worldwide manufacturing industries.

Description

technical field [0001] The invention relates to a precision forging plastic forming process for an internal gear ring of a reducer, in particular to a precision forging plastic forming process for an internal gear ring of a planetary reducer. Background technique [0002] The ring gear is generally used in the planetary reduction system. The planetary reduction system is generally composed of a sun gear, multiple planetary gears, and an inner gear ring. The inner gear ring is an important part of the planetary reduction system, and its quality requirements are directly related to the planetary reduction system. The overall quality of the gear ring is complicated in the manufacturing process and difficult to process, especially the tooth shape, pitch, and gear precision are difficult to control. The general processing method of this kind of gear ring is: cutting material→heating→hot forging→rolling ring→ Machined finished product. The precision of the inner gear ring produce...

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Problems solved by technology

[0003] The invention provides a precision forging plastic forming process for the inner gear ring of a planetary reducer, which mainly solves the problem of the existing traditional processing technology, which requires a lot of investment in machine tools, waste of metal materials in cutting processing, large accumulated errors in tooth profile processing, low yield rate, and labor-intensive processing. The production efficiency is low, the production cycle is long, the processing cost is high, and the technical problems of protecting the production environment. Using warm-cold precision forging composite plastic forming technology, first upsetting, extrusion, punching, and then reaming and rolling rings to make preformed blanks, and then Extrusion plastic deformation in the forming die cavity to form the inner circumference precision forged gear

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