What are the factors affecting the processing of ultra-precision parts

Ultra-precision machining technology was proposed in the 1960s. It is an important way to improve the performance, quality, working life and reliability of electromechanical products, as well as the performance of arthroscopy. Ultra-precision machining refers to machining errors less than 0.1m and surface roughness The processing technology less than Ra0.025Ixm is also called sub-micron processing. The level of ultra-precision processing technology is one of the important signs of a country's manufacturing industry.

In addition to the fluctuation of hydraulic and pneumatic sources in ultra-precision machining, the working environment has a great impact on the processing quality. Therefore, the working environment is a necessary condition to ensure the processing quality. The working environment mainly requires temperature, purification, and vibration prevention. The impact of environmental temperature changes on the accuracy of the machine tool is particularly significant. Processing errors caused by thermal factors, including environmental temperature changes, account for (40 70)% of the total processing error. The mixing of dust can scratch the surface of the workpiece and affect its surface quality; If vibration occurs during processing, it will cause streaks or cloth-like marks on the processed surface of the workpiece, which will significantly reduce the surface finish.

As the requirements of ultra-precision machining accuracy become higher and higher, the requirements for the processing environment become more and more strict. Only from the three aspects of the supply pressure fluctuations that affect the ultra-precision machining accuracy, the change in ambient temperature, and external and self-vibration, the impact is analyzed. There are many factors in the precision of ultra-precision machining. To improve the precision of ultra-precision machining, not only must we understand the factors that affect it, but we must also master the solution.