Research on calibration parameters of hydraulic impulse tools

This paper investigates the working principle of hydraulic impulse tools and, based on this principle and usage conditions, focuses on analysing the effects of air supply pressure, fastener torque rate, and extension rod on the tool's output torque. An experimental design was formulated to confirm the influence of these parameters on the tool's output torque. Based on the experimental data, it is recommended that these parameters be used as calibration standards for hydraulic impulse tools.