Method for machining box body assemblies of three-level planetary reducer

Abstract

The invention discloses a method for machining box body assemblies of a three-level planetary reducer. The method comprises the steps that firstly reference tapes are lathed on the outer circle of a first-level inner gear ring, the outer circle of a second-level inner gear ring and the outer circle of a third-level inner gear ring respectively; secondly, the corresponding reference tapes serve as aligning bases, inner gears and spigots of the first-level inner gear ring, inner gear and spigots of the second-level inner gear ring and inner gears and spigots of the third-level inner gear ring are machined; thirdly, a front box body, the first-level inner gear ring and a first middle box body are assembled, the corresponding reference tape serves as the aligning base, and a first bearing hole and a second bearing hole are machined in the front box body; thirdly, a second middle box body, the third-level inner gear ring and a rear box body are assembled, the corresponding reference tapes serve as the aligning bases, and a fifth bearing hole in the second middle box body and a sixth bearing hole in the rear box body are machined; and finally, the first middle box body, the second-level inner gear ring and the second middle box body are assembled, the corresponding reference tapes serve as the aligning bases, and a third bearing hole in the first middle box body and a fourth bearing hole in the second middle box body are machined. In this way, the coaxiality of the bearing holes is improved remarkably, and the nonconforming rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of reducer processing, and in particular relates to a processing method for a three-stage planetary reducer box body component. Background technique [0002] At present, a reducer with a large speed ratio is subjected to a large impact during use, so it is required to be light in weight, low in noise and compact in structure. In order to meet the requirements of compact structure and low noise, the coaxiality of the axis line of the bearing hole of the same pair of bearings in the reducer is required to be no more than Φ0.03, and the coaxiality of the axis line of the bearing hole of the non-same pair of bearings is not required to be greater than Φ0. 06. This puts forward higher requirements on the machining accuracy of the reducer box parts. [0003] The existing three-stage planetary reducer box body components include a front box body, a first-stage inner ring gear, a first middle box body, a second-st...

AI Technical Summary

Problems solved by technology

[0010] Using the above method, the same pair of bearing holes are not processed in one assembly, the coaxiality error of each bearing hole includes the accumulation of alignment errors, and the coaxiality accuracy of each bearing hole cannot meet the same The axial degree is within Φ0.03, and the coaxiality of the axis of the non-identical bearing holes is within Φ0.06.

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