A grinding process for the inner wall of an oil-free vacuum pump cylinder

Abstract

The invention discloses a grinding process of the inner wall of an oil-free vacuum pump cylinder. Rough machining is performed on the inner wall of the cylinder, and the grinding tool for the oil-free vacuum pump cylinder is used for finishing the inner wall of the cylinder. The grinding process of the inner wall of the oil-free vacuum pump cylinder mainly includes the following steps: S1, rough grinding and installation of the cylinder body; S2, rough grinding and clamping of the cylinder body; S3, rough grinding and taking out the inner wall of the cylinder body; S4, fine honing of the cylinder body Installation; S5, the cylinder block is honed and taken out. In the invention, the processing technology of rough grinding and fine honing of the inner wall is adopted, and two different clamping structures are proposed to fix and clamp the irregular hole-shaped workpiece on the outer wall, so as to prevent the vacuum pump body from swinging in the process of processing, and increase the number of vacuum pump The fixing effect of the cylinder body improves the processing accuracy of the product, improves the sealing of the finished product, and ensures the quality of the product.

Description

Technical field: [0001] The invention relates to the field of mechanical vacuum pumps, in particular to a grinding process for the inner wall of an oil-free vacuum pump cylinder. Background technique: [0002] Oil-free vacuum pump refers to a device or equipment that uses mechanical, physical, chemical or physical-chemical methods to extract air from the pumped container to obtain a vacuum. It is higher to ensure the stability and quality requirements of the cylinder block. Since the inner wall of the cylinder after casting is rough and has burrs, which affects subsequent use, it is necessary to carry out preliminary burr grinding and fine honing on the inner wall of the vacuum pump. After these two steps It takes several steps to obtain a good quality oil-free vacuum pump cylinder. [0003] Now, these two steps are generally handled by manual grinding or machine grinding and then honing. The problems in this method are as follows: 1. It is difficult to fix the cylinder lin...

AI Technical Summary

Problems solved by technology

[0003] Now these two steps are generally handled manually or machine-polished and then honed. The problems in this method are as follows: 1. It is difficult to fix the cylinder liner during manual grinding, so the cylinder liner shakes or swings during the grinding process, thus Affect the grinding quality, the initial grinding quality affects the effect of subsequent fine honing, and the labor efficiency is low, time-consuming and labor-intensive

2. It is often difficult to adapt to cylinder liners of different sizes when the machine is polished, and the adaptability is poor, and the next step of fine honing can only be carried out after the machine is polished, which is inefficient

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