Machining method for high-precision eccentric spline shaft

Abstract

The invention relates to the machining field and in particular relates to a machining method of the high-precision eccentric spline shaft. The machining method comprises the following steps: making position lines for central holes and eccentric holes in two ends of the shaft; forming the central holes in the two ends through machining according to the positioning lines; machining the shaft roughly and leaving a proper amount of machining allowance; detecting flaws and conducting tempering; conducting semi-finish machining for the maximal shaft diameter; boring two ends until length sizes required in a drawing are met; selecting the central lines and making new position lines of new central holes and eccentric holes and punching sample holes ; forming central holes and eccentric holes in the two ends by using a numerical control or digital display boring machine through machining; machining shaft shoulders; and mounting the shaft on a large gear hobbing machine and machining the shaft in a single-tool cutting mode. According to the invention, requirements for deflection angles in a method utilizing a tooth-shaped central line and an eccentric distance of a spline shaft are guaranteed. At the same time, a problem that a spline groove is difficult to align to a cutter is solved and the work piece concentricity and verticality are guaranteed in single-process clamping and machining. Influence on the manufacturing of the spline shaft caused by eccentric weight is also avoided completely and tempering reliability and operability are guaranteed.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method for a high-precision eccentric spline shaft. Background technique [0002] The high-precision eccentric spline shaft is an important part in the stepping cooling bed system. The position of the center line of the spline tooth profile and the eccentricity is very high, and the other side needs to be indexed after eccentricity. processed parts. It is difficult to meet these requirements in processing. [0003] The spline groove of the original design is the tooth top in the direction facing the eccentricity, that is to say, the highest point of the eccentricity needs to be rotated through a certain angle before cutting the groove on both sides of the tooth profile position, which makes it difficult to index and align. Knife. [0004] The concentricity of the workpiece requires many and high requirements. In the case of partial gravity, it will be difficul...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems, the present invention provides a method that can guarantee the deflection angle requirements of the spline tooth profile centerline and eccentricity method, and at the same time solve the problem that the spline groove is difficult to set the tool. It can be guaranteed in clamp processing; the influence of partial gravity on the production of splines is also completely avoided; the processing method of high-precision eccentric spline shafts can ensure the reliability and operability of quenching and tempering