Experimental study of cutting force testing based on dynamic strain sensor

CHEN Bing
（College of Biological and Environmental Engineering， Zhejiang University of Technology， Hangzhou 310014， China）

Abstract： In order to improve the dynamic performance of the cutting force testing device based on strain gauge，the kinetic equation of the test device was established，and the strain distribution of the sensitive components was analyzed using the finite element software. The structural design of the apparatus was carried out. Experimental device which contains the 740B02 type sensor，DH5863 charge amplifier and PXI-6254 data acquisition card was developed to achieve the dynamic measurement of the cutting force by measuring the strain of the sensitive element. The cutting test results show that the test apparatus has simple structure and its dynamic characteristics are suitable for real time measurement of the cutting force.
Key words： dynamometer； cutting force testing； finite element analysis； strain sensor