Novel contact force measurement in vibratory finishing
Shuwen Wang, Jiahui Chen, Zhiguo Liu, Michael N. Morgan, Xiaoxiao Liu
Abstract
The measurement accuracy of vibratory surface finishing forces (VSFFs) are seriously affected by the wiring of the force sensor, because the trajectory of the sensor with wiring is significantly different with that of the workpiece without wiring. To solve this problem, a triaxial wireless force sensor (WFS) is developed to measure the VSFFs between media and workpiece surfaces in vibratory surface finishing under various operation conditions. Experimental results show that the normal impacts between the media and the workpiece are dominant in the vibratory surface finishing (VSF), and the mean VSFFs in normal direction on the front surface of the workpiece are larger than that on the side and rear surfaces of the workpiece. The mass and shape of media have a significant effect on the VSFFs that has significant effects on the surface roughness and hardness of a workpiece in the VSF. In order to get the best surface quality of workpiece in vibratory surface finishing, the media material and shape/size, finishing period of time, initial position of the workpiece, and other operation conditions should be optimized.