Torquing for Tightness: Assemblers measure torque during fastening to ensure process capability

摘要

To many manufacturers, the concept of torque is a mystery. Despite the confusion, correct control of this force is critical to quality manufacturing and has a direct impact on bottom-line issues like product quality, reliability and safety. Controlling torque applied by screwdrivers and wrenches is absolutely necessary for maintaining and controlling assembly quality. It is no longer sufficient just to run a fastener until it stops and hope that it is tight enough. Measuring clamp force is the actual goal in joint assembly with threaded fasteners. Clamp force is the force holding the materials together. "If we could measure clamp force, we wouldn't need torque," says Greg Katsis, marketing manager for Sturtevant Richmont (Franklin Park, IL).