Slewing bearing quenching type inner gear ring processing technology

Abstract

The invention relates to a slewing bearing quenching type inner gear ring processing technology. The technology processes comprise workblank roll forming, rough turning, half finish turning, rolling path quenching, finish turning I, gear producing, gear tooth quenching, finish turning II, finish turning III, rolling path polishing and mounting hole drilling. The processing technology is characterized in that the stage of the finish turning III comprises the following steps: placing the bottom surface of a workpiece on a contour cushion of a worktable, rectifying through an excircle positioned at the lower part of a rolling path, performing finish turning on the end surface and the excircle positioned at the upper part of the rolling path, and processing the size H, and the size D of the excircle positioned at the upper part of the rolling path to the size required by a drawing. Through the adoption of the technology, the content of the finish turning III process is enlarged after a gear tooth is quenched, the parallelism requirement of the bottom surface (the standard plane) of the workpiece and the end surface (a non-standard plane) of the workpiece are ensured, and reliable processing standard guarantee can be provided for the follow processes, so that the precision of slewing bearing is improved, the mounting and application of the slewing bearing product can be ensured, and then the service life of the slewing bearing product and a connecting bolt can be prolonged.

Description

technical field [0001] The invention relates to the field of slewing bearings, in particular to a process for processing a quenched inner ring gear of slewing bearings. Background technique [0002] Slewing bearings are widely used in modern industry. They are called "joints of machines". important transmission parts. With the rapid development of the machinery industry, slewing bearings have been widely used in marine equipment, engineering machinery, light industrial machinery, metallurgical machinery, medical machinery, industrial machinery and other industries. [0003] For the internal ring gear of the slewing bearing tooth quenching, the conventional processing process is: rough rolling forging (outsourcing) → rough turning → semi-finishing turning → raceway quenching → finishing turning I → gear making → tooth quenching → finishing turning II → Grinding raceway → Drilling mounting holes. [0004] After the teeth are quenched, the hardness of the end surface close t...

AI Technical Summary

Problems solved by technology

[0004] After the teeth are quenched, the hardness of the end surface close to the gear root is very high, and the non-reference surface will not be processed in the finish turning II process. After assembly, the runout of the end face and the perpendicularity between the mounting hole and the reference plane are difficult to meet the specified requirements, which directly affects the installation and use of the product, and reduces the service life of the slewing ring product and connecting bolts

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