Dry cutting means not using the process of cutting fluid in machining. It eliminates the source of a series of negative environmental effects caused by cutting fluids, mainly has the following characteristics: clean chip (1) is formed, non-polluting, easy recycling and disposal; (2) eliminating the need for cutting fluid supply and related the purchase and maintenance cost recovery, filtration and other related devices, as well as chips, cutting fluid handling costs related to both simplify the production system, but also saves the cost of production; (3) does not pollute the environment, the plant without incurring cutting waste contamination Responsibility, safety and quality-related accidents and cutting fluid does not occur.

However, if used in the process of cutting fluid, cutting state will deteriorate further, namely cutting temperature friction and tool / chip and tool / workpiece surface is further exacerbated by poor chip, reducing tool life, and surface quality deteriorates. Therefore, if dry machining can proceed smoothly, it is necessary to seek technological solutions, so that it can make up the main function of cutting fluid. This requires a careful analysis of a variety of specific boundary conditions and the impact of dry cutting of complex factors.