Processing method for internally toothed annulus

Abstract

The invention provides a processing method for an internally toothed annulus, which comprises the following steps: selecting a low-carbon steel tooth billet and carrying out rough lathing after the tooth billet is forged and normalizing treatment is performed; roughly machining the tooth billet into a tooth profile; conducting carburizing, quenching and high temperature tempering on the toothed part, and finally carrying out the shot peening; conducting finish machining on a datum plane; and conducting finish machining on the tooth profile through tooth grinding. The method solves the hardness problem of the toothed surface of the internally toothed annulus, adopts a low carbon steel material, carries out tough tooth punching before heating, and grinds the toothed part after cemented quenching; the hardness of the toothed surface can reach HRC 58 to 62, so as to thoroughly eliminate the pitting corrosion of the toothed surface and prolong the service lives of parts; as the tooth grinding process is carried out after heating, the precision of the toothed annulus can be above 6 grade; as the precision grade of the toothed part is improved after the tooth grinding process, the transmission of the toothed annulus becomes smoother; and as the tooth punching process is carried out before heating, the parts are low in hardness in the normalized condition, which provides convenience for tooth punching and improves the processing efficiency.

Description

Technical field [0001] The present invention involves a gear of a tooth, which specializes in a processing method of an internal gear. Background technique [0002] Due to the special structure of the gear clutch, the tooth shape is usually required after heat treatment, but due to the carburizing and quenching of the original inner gear, the inner teeth are not required to be required.Steel materials, further precision processing to form the teeth, directly tooth processing to the required size, and the accuracy of the tooth reaches up to 7 levels.Because the teeth are hot after the heat, the hardness of the tooth is controlled at about the HB300, resulting in the low hardness of the tooth surface. When the actual loading is used, the tooth surface is prone to erosion, resulting in a decline in the life of the gear. Invention content [0003] The purpose of invention: The purpose of the present invention is to provide a processing method that provides the inner gear hardness an...

AI Technical Summary

Problems solved by technology

Because the teeth are opened after heating, the hardness of the teeth is controlled at about HB300, resulting in low hardness of the tooth surface. When the actual load is used, the tooth surface is prone to pitting, resulting in a decrease in the service life of the ring gear.