Grinding Characteristic of Segmental Wheel —Studies on Creep Feed Grinding (4th Report) —

This paper experimentally describes the grinding characteristic of segmental wheels in creep feed grinding. In creep feed grinding, grinding temperature increases rapidly and thermal damage such as a burn occurs on a workpiece. As one of prevention methods of the thermal damage, a segmental wheel which shows an excellent cooling effect has been developed. This wheel has 24 pieces of soft grade segments which are attached on the circumference of an aluminium disk. As a result of applications of the segmental wheel to creep feed grinding, the followings became evident. (1) The segmental wheel has the effect of reduction of both total grinding force and grinding temperature. (2) Self-sharpening is activated and grinding characteristic of the segmental wheel is kept good without dulling of cutting edge. (3) Grinding ratio and ground surface roughness in the case of a segmental wheel is almost the same level as those in the case of a straight wheel.