Gearbox intermediate shaft machining method

Abstract

The invention discloses a gearbox intermediate shaft machining method which comprises the following steps of a, obtaining an intermediate shaft blank and roughly turning the blank; b, turning to obtain center holes in the outer end faces of an input shaft section and an output shaft section of the intermediate shaft; c, machining to obtain a long key groove and a semicircular key groove in the input shaft section of the intermediate shaft; d, machining to obtain a first transmission gear, a second transmission gear and a third transmission gear on the output shaft section of the intermediate shaft; e, performing heat treatment on the intermediate shaft; and f, grinding the long key groove, the semicircular key groove and an outer circle, wherein in the step c, the two center holes machinedand obtained in the step b are tightly pressed against through a centre mechanism, and machining of the long key groove is completed. The two center holes machined and obtained in the step b are pressed against through the centre mechanism, the machined long key groove serves as the positioning reference to prevent the intermediate shaft from rotating, and the semicircular key groove is machinedand obtained. The gearbox intermediate shaft machining method provided by the invention has the characteristics that the machining and manufacturing cost can be reduced, the position precision among all transmission structures on the intermediate shaft can be improved, and the machining precision can be improved.

Description

technical field [0001] The invention belongs to the technical field of gearbox intermediate shaft processing, and in particular relates to a processing method for a gearbox intermediate shaft. Background technique [0002] Such as figure 1 Shown is an intermediate shaft structure in a gearbox, including an input shaft section and an output shaft section. The input shaft section is provided with a long keyway and a semicircular keyway, and the output shaft section is provided with a first transmission gear and a second transmission gear at intervals. The second transmission gear and the third transmission gear, when the intermediate shaft is designed and processed, it needs to be processed so that the long keyway and semicircular keyway on the intermediate shaft are on the same line as the tooth grooves of the three transmission gears on the intermediate shaft to ensure that the transmission requirements are met . [0003] In the existing processing technology, it is necess...

AI Technical Summary

Problems solved by technology

Such a manufacturing process has the following disadvantages: 1. It is necessary to process and manufacture positioning holes, which increases the manufacturing cost and affects the strength of the end of the entire intermediate shaft; The three transmission gears on the top lead to the low position accuracy of the long keyway, the semicircular keyway and the three gears on the intermediate shaft, which cannot meet the design requirements well; 3. Use positioning pin holes and positioning pins for positioning. Easy to wear, resulting in reduced positioning accuracy, affecting the machining accuracy of the entire intermediate shaft

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