DESIGN OF A FACILITY FOR THE PRECISE SIMULTANEOUS GENERATION AND MEASUREMENT OF FORCE AND TORQUE

摘要

This article describes the design of a measuring facility which can be used to investigate and calibrate so-called "friction coefficient sensors". These measuring facilities are used to measure the prestressing force and the tightening torque, resp. the friction torque of screws. These measurements are aimed at optimizing screw joints. The measuring facility described here is part of a force standard machine (fsm). In addition to the force which this system can realize with a very small measurement uncertainty of 0.002% (k = 2) (in the measuring range from 20 kN to 1 MN), it can also generate an extremely precise torque (objective: better than 0.005% at k = 2) in the range from 20 N·m to 2 kN·m.