Processing method of vane pump rotor groove

Abstract

The invention discloses a processing method of a vane pump rotor groove, comprising the following steps: firstly, carrying out blank heat treatment; next, finely grinding a positioning surface of an end surface; and then, clamping a rotor and grinding a notch; and finally brushing up to remove burrs. The processing method is used for processing the vane pump rotor groove, forming a grinding grooveonce and reducing an accumulative error caused by multiple times of clamping, and the quality of products is increased by one accuracy grade. During the processing, the vane pump rotor groove is influenced by heat treatment deformation, and uncontrollable factors are removed as much as possible. The processing method avoids the problems of uneven traditional grinding quantity and grinding burn soas to obtain good surface roughness.

Description

technical field [0001] The invention relates to a method for processing a rotor of an automobile steering vane pump, in particular to a method for processing a rotor groove of a vane pump. Background technique [0002] The rotor part is one of the core parts of the steering vane pump. Such as figure 1 As shown, when the vane pump is working, the casing of the sealed pump is filled with hydraulic oil, and the rotor 1 rotates at high speed in the 2 circles of the stator, driving the vane 3 installed in the groove to slide back and forth, causing the area volume to change and thus the pressure to change. Therefore, the accuracy of the rotor slot directly affects the performance of the whole pump, such as minimum flow, noise, etc. [0003] The original rotor groove processing is based on the concept of "groove grinding". Firstly, the groove is pre-milled, followed by heat treatment, and then the groove is roughly ground, finely ground, and finally polished to deburr. [0004]...

AI Technical Summary

Problems solved by technology

[0004] In the above processing process, the deformation of heat treatment and the positioning difference of multiple clamping will lead to low processing accuracy, and the parallelism and groove width accuracy of the groove can only be controlled at 0.01mm accuracy; and the uncontrolled pre-processing will easily lead to Poor surface roughness of galling or grooves

Heat treatment is required during the processing, which leads to complicated processing and the processing of the rotors in the prior art is carried out one by one and cannot be processed at the same time. In mass production, the production efficiency is low

[0005] In short, the quality of the rotor groove processed by the above method is not easy to control, and the process is complicated and inefficient, requiring multiple processing

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