Abstract
The tool life in precision grinding process is discussed theoretically based on the variation in grinding forces with the progress of time. From the results, the effects of dressing conditions and grinding conditions on the tool life in grinding are clarified and verified experimentally. A summary of the results is shown below. (1) The percent wear flat area to the working area of grinding wheel at the beginning of burn is not fixed, and varies according to the effects of grinding conditions. (2) The type (grinding burn type or chatter mark type as a result of bond fracture) and the time of tool life in grinding can be estimated by the mutural relation between dressing and operating conditions. (3) When the ratio of work velocity to wheel velocity is small, the merits of high-speed grinding could not be expected to obtain. (4) In order to prevent the growth of grinding burn in case of larger depth of cut and lower work velocity, it is convenient to apply the lower wheel velocity.
