Development of Small Three-component Dynamometer for Cutting Force Measurement

Abstract

A dynamometer used to support the cutting tool or fixed on the machine tool should have compactness, high sensitivity and high stiffness. The parallel-beam dynamometer is better than any other one in this respect, but it is not easy to manufacuture. So a dynamometer with a circular hole is newly being developed by applying the structure of parallel beams, and a small three-component dynamometer has been manufactured as a trial. The dynamometer of this type has high practical application on account of easy manufacture and compactness. For the design of this dynamometer, both the static characteristics and the interaction of a circular-hole one-component dynamometer with respect to the change of dimension are analyzed by Finit Element Method. Finally various types of dynamometers manufactured using this structure are introduced.