Abstract: In order to estimate the energy partition to the workpiece in surface grinding, the temperatures at various depths from the ground surface of the workpiece were measured using the PVD (physical ...

Abstract: A new method to measure the temperature distribution in cutting tools is reported. In this method, a thin PVD (physically vapor deposited) film deposited on a cutting tool is used as a thermal ...

Abstract: The whirling vibration of the drill when beginning the drilling of a workpiece with a pilot hole, is theoretically examined. It becomes clear that the whirling is a regenerative chatter vibration ...

Abstract: Chatter vibration of long drills has been investigated using several drills with different overhang lengths and special drills with different pieces of additional mass. The frequency, amplitude, ...

Abstract: The development of whirling vibration is observed by using drills with various web thicknesses, point angles, relief angles, and various helix angles in order to investigate the effect of drill ...

Abstract: The whirling vibration of the drill in the beginning of the drilling operation is experimentally investigated. Special attention is paid to how vibration develops as the drill proceeds into the ...