关键词: 刚度, 固有频率, 灵敏度, 切削测力仪

Abstract: To moderat the contradiction between the sensitivity and the rigidity of strain gage type cutting dynamometer, a new structure, so called secondary elastic element structure, is proposed. The mechanical model of the structure is established. The static and dynamic behaviour of the structure are analyzed and the results show that the structure has both the advantages of high sensitivity and high rigidity. And with approapriate structure parameter, high nature frequency may also be obtained. A practical example is given. Both the static and dynamic features of the newly developed cutting dynamometer are calibrated, and the results are very satisfying.

Key words: Cutting dynamometer, Natural frequency, Rigidity, Sensitivity