Development of an Impact Cutting Tester to Investigate Ultra High-speed Cutting Phenomena under Various Cutting Environments

Abstract

An impact cutting tester has been developed to investigate ultra high-speed cutting phenomena under various cutting environments. In the tester, a small projectile having a small cutting tool loaded into an acceleration tube is launched to a workpiece set in a chamber. The chip is captured in the projectile. After finishing cutting, the projectile goes forward in a deceleration tube; it is decelerated with a compressed gas; finally it stops in the tube. These tubes and the chamber are completely isolated with the atmosphere. The lengths of the acceleration and deceleration tube are 3m. Maximum pressure of the compressed gas is 1MPa. This report describes the properties of the tester developed and shows several experimental results under high speed and ultra high-speed cutting processes obtained with the tester.