High-precision rectangular spline shaft manufacturing process

Abstract

The invention relates to the technical field of spline shafts, in particular to a high-precision rectangular spline shaft manufacturing process. According to the high-precision spline shaft manufacturing process, first, materials are selected, namely, 40Cr materials (selected according to the requirement) are adopted; second, rough turning machining is conducted on the spline workblank; third, thermal refining is conducted, wherein the rigidity HB is 250-280, and spline shaft core strength is improved; fourth, digital controlled lathe semi-finish turning is conducted, wherein a reserved bearing block margin is 0.3-0.5mm; fifth, spline rolling is conducted, namely, a spline milling machine for a grinding hob is used for machining the spline width and the bottom diameter, the margin of 0.3-0.4mm is reserved; sixth, quenching (heating processing) is conducted, namely, high-frequency quenching is adopted at the spline position, the rigidity HR is 48-53, and the rigidity of the spline position is improved; seventh, external diameter grinding of a cylindrical grinding machine is conducted (drawing technical requirements are met as needed); eighth, spline grinding is conducted, namely, a molding gear grinding machine is adopted, and a grinding wheel is corrected; ninth, the spline size is detected. The high-precision rectangular spline shaft manufacturing process improves the precision of the spline shaft, and improves working efficiency.

Description

technical field [0001] The invention relates to a spline shaft manufacturing process, in particular to a high-precision rectangular spline shaft manufacturing process. Background technique [0002] At present, spline shafts generally adopt outer diameter positioning in China, which is characterized by simple manufacturing process and poor positioning accuracy. In foreign countries, bottom diameter positioning (inner positioning) is generally used, which has high precision and accurate positioning. With the continuous improvement of the level of the machine tool manufacturing industry, the precision requirements for the spline shaft are also getting higher and higher. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-precision rectangular spline shaft manufacturing process as the level of the machine tool manufacturing industry continues to improve and the precision requirements for the spline shaft become hi...

AI Technical Summary

Problems solved by technology

[0002] At present, spline shafts generally adopt outer diameter positioning in China, which is characterized by simple manufacturing process and poor positioning accuracy. In foreign countries, bottom diameter positioning (inner positioning) is generally used, which has high precision and accurate positioning.