Synthesis and analysis of the tool dynamometer for turning operations

Abstract

Virtual manufacturing has predicting of cutting forces in prepared program for CNC machine tool as one of the most important functional block. Development of reliable models of cutting forces requires appropriate sensor technique. It’s application is needed in building of data base with specific cutting forces, as well as for evaluation of developed models of cutting forces. Wide use of superior piezo-electric tool dynamometers is significantly reduced because its very high price. Paper presents development of the three- component tool dynamometer with strain gauges. Basic shape of this dynamometer is well known double extended octagonal ring (DEOR). Geometric parameters of the dynamometer body is optimised through FEA analysis. Designed dynamometer achieves partial decomposition of force components. Completing of such force decomposition is realized through decomposition matrix, created using FEA environment.