Coring on Ceramics by Machining Center

Abstract

A diamond core drill has been well carried out in the ceramics drilling. In this investigation, a vertical type machining center (MC) was used in the coring of alumina ceramics with a metal bonded diamond core drill. To clarify the mechanism of coring, the influences of coring conditions on the coring force, grinding ratio, successive zone of coring were studied. At the wheel infeed speed of 5.2 mm/min, and the wheel revolution of 3 000 rpm, the best grinding ratio was obtained. But, from a viewpoint of coring speed, the wheel infeed speed at 37 mm/min was best, in the coring depth was small.