Herringbone gear shaft and production method thereof

Abstract

The invention relates to a herringbone gear shaft and a production method of the herringbone gear shaft. The production method comprises the following process steps of: (1) forging of a shaft body; (2) drilling of screw holes at two ends of the shaft body by using a drilling machine; (3) rough turning; (4) normalizing treatment; (5) finish turning; (6) medium temperature distressing; (7) primary external grinding for excircle at each part of the shaft body; (8) processing of a levogyration gear and a dextrorotation gear on the shaft body; (9) carburizing quenching; (10) secondary external grinding for excircle at each part of the shaft body; (11) gear grinding; (12) detection on symmetry degree of the levogyration gear and the dextrorotation gear by adopting a symmetry degree detecting device; and (13) symmetry degree adjustment, wherein the symmetry degree is ensured to be less than or equal to 0.03mm. The herringbone gear shaft and the production method of the herringbone gear shaft have the advantages of being low in production cost, efficient in detection and reliable in quality, and solve the problems of difficulty in symmetry degree machining and measurement in the machining and producing processes of the large-space herringbone gear shaft; and the herringbone gear shaft produced by machining with the method is good is symmetry, little in heat treatment deformation, long in service life and high in reliability.

Description

technical field [0001] The invention relates to a herringbone gear shaft and a manufacturing method thereof, belonging to the technical field of manufacturing a herringbone gear shaft. Background technique [0002] The herringbone gear drive has the advantages of high load capacity and good work balance, and is widely used as the main drive in large-scale high-pressure water pump systems. The high-precision herringbone gear shaft has strict requirements on the symmetry of the herringbone gear. The symmetry error is directly related to the design effect of the herringbone gear and affects the life and strength of the herringbone gear. The existing manufacturing methods are as follows: (1) one is to process one direction of rotation first, and then mark and position to process the other direction of rotation; this method has low precision and low efficiency; (2) one is split processing, repositioning and assembling; this method cannot meet the processing needs of the herringb...

AI Technical Summary

Problems solved by technology

The existing manufacturing methods are as follows: (1) one is to process one direction of rotation first, and then mark and position to process the other direction of rotation; this method has low precision and low efficiency; (2) one is split processing, repositioning and assembling; this method cannot meet the processing needs of the herringbone gear shaft; (3) Another method is to use the existing grinding software of the herringbone gear to process the two helical gears of the herringbone gear as a whole; but this The method also cannot meet the situation that the distance between the two teeth of the herringbone gear shaft is relatively large and the distance from the reference plane is relatively large.

In addition, in the detection direction, the detection of the symmetry of the herringbone gear often relies on the three-coordinate measuring instrument, but when the distance between the two teeth of the herringbone gear shaft is large, a large-scale three-coordinate measuring instrument is required, and the equipment investment is large, and it cannot meet the requirements. Requirements for mass production

Images