Thin-wall annular gear processing method

Abstract

The invention discloses a thin-wall annular gear processing method which comprises the steps of forging, rough turning, tempering, half finished turning, finish turning and gear shaping, wherein the finish turning process comprises the steps of: taking the end surface of the thin-wall annular gear after half finished turning as a thrust surface, acting the axial force to fix the thin-wall annulargear on a horizontal lathe work bench, and then turning the inner wall and the outer wall of the thin-wall annular gear; and the gear shaping process comprises the steps of: using a fixture to simlutaneously fix the end surface and the outer wall of the thin-wall annular gear after finish turning, and then conducting gear shaping to the inner wall of the thin-wall annular gear. The thin-wall annular gear processing method can lead the thin-wall annular gear after processing to have small deformation, has high precision and high efficiency.

Description

technical field [0001] The invention relates to the technical field of gears, in particular to a processing method for a thin-walled inner ring gear. Background technique [0002] The ratio of the wall thickness to the diameter of the inner ring gear is 1 / 50, the diameter is also as large as 570mm, and the width is 110mm. Therefore, the deformation of the inner ring gear is very large during the lathing and gear shaping process of the inner ring gear. Generally, the processing deformation is 0.2 ~0.3mm is normal. Many professional manufacturers feel that it is not guaranteed to use a horizontal car, and must use a vertical car. The mechanical performance requirements are high, and the precision of the internal teeth is also high. If deformation occurs, the force on the internal teeth will be uneven, and the teeth will easily be broken, causing heavy lifting objects to fall, causing personnel and property losses, and the consequences are unimaginable. In the gear shaping pro...

AI Technical Summary

Problems solved by technology

[0002] The ratio of the wall thickness to the diameter of the inner ring gear is 1 / 50, the diameter is also as large as 570mm, and the width is 110mm. Therefore, the deformation of the inner ring gear is very large during the lathing and gear shaping process of the inner ring gear. Generally, the processing deformation is 0.2 ~0.3mm is normal. Many professional manufacturers feel that it is not guaranteed to use a horizontal car, and must use a vertical car. The mechanical performance requirements are high, and the precision of the internal teeth is also high. If deformation occurs, the force on the internal teeth will be uneven, and the teeth will easily be broken, causing heavy lifting objects to fall, resulting in loss of personnel and property, and the consequences are unimaginable.

In the gear shaping process, the traditional gear shaping process is to position the gear on the end face, but if this method is used for thin-walled parts, large deformation will occur, and the deformation after processing can reach 0.25mm

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