Grinding dynamometer for vertical glass edge grinding machine with V-grinding wheel

Grinding force is an important parameter during the grinding process. A grinding dynamometer based on resistance strain gauge technology was developed for the special installation and work conditions of a glass edge grinding machine with a V-grinding wheel. The sensing components are strain gauges mounted on an elastic sleeve held in place by a thrust ball bearing on the end of the grinding wheel shaft. Grinding force signals are transmitted by multipoint contact slip rings. Calibration and validity checks indicate the transfer of tangential and radial grinding forces by the dynamometer are as high as 97 and 70 percent with excellent linearity. These transfer values are only 75 and 52 percent in the absence of a thrust ball bearing. The article provides a basis for measurement and research of grinding forces in similar grinding machines.