精密机械零件加工是机械加工的一种，只是它是精密加工，随着工业的发展和需求的不断的变化，紧密机械加工已经变化了很多，它的分类越来越多，它的方向是越来越细，方向也越来越专业化，随着科技的发展它的技术也不断的提高，加工的质量和精确度也越来越高。
Precision machine parts processing is a kind of mechanical processing, but it is precise processing. With the development of industry and the constant change of demand, compact machine processing has changed a lot, its classification is more and more, its direction is more and more fine, its direction is more and more specialized, and its technology is not the same with the development of science and technology. With the continuous improvement, the quality and accuracy of processing are getting higher and higher.