Effects of the Supplied Cold-Air Condition on Grinding Temperature in Cold-Air Jet Grinding

摘要

Eco-development on grinding has recently become the center of interest in mechanical manufacturing fields. In order to improve the environment of grinding, establishing a technology of eco-friendly grinding without using cutting fluid, one of which is the cold-air jet grinding, has been required because of the need to reduce air pollution and the problems in the disposal of used cutting fluid. The performance index of the cold-air jet grinding, the dressing interval, has a remarkable improvement over the one with cutting fluids currently in use. Although the cold-air jet grinding is advantageous to improve the environment, the mechanism of improvement in dressing interval in cold-air jet grinding has not been clarified experimentally. The grinding temperature, the temperature at the grinding point, and the internal temperature in the workpieces for each cold-air jet condition should be investigated to understand the mechanism. In this study, the grinding temperatures were experimentally measured by using a grinding temperature measuring system. A relationship between the grinding temperature and the cold-air jet supply pressure is found experimentally and numerically.