各种金属、非金属材料在低温时的物理机械性性能不同于常温状态,冷冻加工就是根据工件材料的低温特性,把工件温度降到所需的低温状态进行切削加工。使在常温下使用常规方法难以或不能进行切削加工的工件可以容易地进行切削加工。但是由于工件制冷、装卡和加工过程均需在低温状态下,所以冷冻加工的应用受到很大限止。目前来用的冷冻切削方法一般有两种。一种是用制冷机提供冷冻剂使零件冷却进行切削加工;另一种 The physical and mechanical properties of various metals and non-metallic materials at low temperatures are different from those at normal temperature. The freezing process is based on the low-temperature characteristics of the workpiece materials, cutting the workpiece temperature to the required low temperature. It is easy to cut a workpiece that is difficult or impossible to cut using a conventional method at normal temperature. However, due to the workpiece cooling, loading and processing are required at low temperatures, so the application of frozen processing has been greatly limited. Currently used frozen cutting methods are generally two. One is the use of refrigerators to provide cooling parts for cooling; the other