Research on the intelligent tool holder for cutting force monitoring in milling process

Abstract In response to the lack of cutting force sensing mechanisms in the intelligent manufacturing process of key components for variable high-speed trains, this study designs an intelligent tool holder capable of sensing cutting forces and transmitting them wirelessly. In the design of the cutting force detection scheme, thin-film strain gauges (TFSGs) were selected. Based on the force analysis of the tool holder, a deposition scheme for TFSGs was determined, enabling the measurement of cutting resistance during the milling process. The thin-film strain gauges were deposited onto the substrate using magnetron sputtering. Experimental tests showed that the gauge factor (K) value of the strain sensor at room temperature is 1.97.