Environmental Control and Compensation of Precision Machining

In order to meet the requirements of precision machining and ultraprecision machining, and to make the processing accuracy achieve the micron or even sub-micro level, the external environment must be strictly controlled. The external environment refers to the entire external environment that must be controlled, except for the operational experience and technical level of workers and the process system of precision machining and ultraprecision machining. The external environment includes thermal environment, vibration environment, air and air pressure environment, electromagnetic environment, cleanliness, and so on. Different methods of precision machining and ultraprecision machining require different levels of control on different external environments. The external supporting environment that precision machining and ultraprecision machining require to control is only the environment within a local scope, such as indoor environment or the local scope of the processing region. With the continuing accuracy improvement of precision machining and ultraprecision machining, the requirements of the external environment are becoming more and more comprehensive and demanding.