Processing method of oblique oil hole in revolving shaft of traction motor and auxiliary processing device

Abstract

The invention discloses a method for processing an oblique oil hole in a revolving shaft, and an auxiliary processing device of an oblique oil hole in a revolving shaft of a traction motor, which is provided according to the method, is designed by using the characteristic of length consistence of fine control processing of the revolving shaft, and can be used for controlling six degrees of freedom of the revolving shaft. An entire technical process is optimized, an oil groove is subjected to technical treatment once again, processing is performed according to the practical size of a design figure, and the width of the oil groove is ensured; and secondly, a drilling technology of the oblique oil hole is improved, a special device which can be arranged on a five-axle processing center is designed according to the characteristic of length size consistence of fine control processing of the revolving shaft, the device is provided with a shaft shoulder positioning step, the revolving shaft is erected on the device, a shaft shoulder is pressed against the positioning step, and the revolving shaft is compressed by using a foundry weight and a T-shaped screw rod, so that six degrees of freedom of the revolving shaft are controlled. Through the five-axle linkage function of five small axles, the consistence of a positioning point of the oblique oil hole of each revolving shaft is ensured. The position of the oblique oil hole is ensured strictly. The method disclosed by the invention has the advantages of reliability, stable processing quality, low cost, high efficiency and suitability for large-scale production of high-accuracy revolving shafts.

Description

technical field [0001] The invention relates to a processing method for processing a hole on a shaft, in particular to a processing method for an inclined oil hole of a traction motor shaft and an auxiliary processing device thereof, belonging to the technical field of motor manufacturing. Background technique [0002] The inclined oil hole of the traction motor shaft is generally located on the tapered surface of the transmission end. Its function is to inject glycerin and discharge glycerin when the motor shaft presses the coupling. The oil hole flows out, and the oil groove where the inclined oil hole is located is used for the oil circuit to run through the circumference. The material of the rotating shaft has high hardness and good toughness, and the inclined oil hole is a deep hole with a small diameter and strict requirements on the position. In this way, the processing is very difficult, and the quality is unstable. Tapered face, which affects the contact ratio of t...

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Problems solved by technology

[0008] The purpose of the present invention is to propose a method for processing the inclined oil hole of the traction motor shaft that can solve the problems of deviation of the drilling position of the inclined oil hole, unstable quality, and high scrap rate in view of the above technical problems.

This will lead to the problem of narrowing of the oil groove opening when the taper surface of the turning oil groove is finished, which in turn will make it more difficult for the elliptical orifice of the inclined oil hole to completely fall into the oil groove. When the size of the side is larger than the width of the oil groove, no matter how high the position accuracy of the inclined oil hole orifice is, the orifice of the inclined oil hole cannot completely fall into the oil groove, thus affecting the taper surface.

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