VERSATILE MEASUREMENT DEVICE APPLICABLE IN TORQUE-BASED AND ANGLE-BASED METHODS FOR VARIOUS CRITICAL COEFFICIENTS OF FRICTION OF SCREW

摘要

Disclosed is a versatile measurement device applicable in torque-based and angle-based methods for various critical coefficients of friction of a screw. The device comprises a torque measurement module of a versatile friction apparatus, a nut holding sleeve, a connector support frame, a washer-type pressure sensor, and a bolt tightening module. The torque measurement module of the versatile friction apparatus connects the nut holding sleeve and the connector support frame together, performs vertical movement along a guide rail, and reaches a suitable position by means of adaptive feedback of the apparatus. The connector support frame is used to fix an upper and lower connector and the washer-type pressure sensor. The bolt tightening module comprises a torque-angle sensor, and is used to tighten a bolt. The present invention enables measurement of coefficients of friction during the coupling of bolts of different grades, different sizes, and different materials, achieves speed and direction control during bolt tightening, and realizes tightening processes for torque-based and angle-based methods, thereby having significance in subsequent studies of relationships between the tightening torque, coefficients of friction, and axial pre-tensioning force of bolt couplings.