FASTENING METHOD AND APPARATUS

摘要

A fastening method and apparatus ( 9 ) comprising using a control apparatus to select a first upsetting volume of an upsetting die, using a punch to push a first fastener into a workpiece and using the upsetting die to upset the first fastener, then using the control apparatus to select a second upsetting volume of the upsetting die, using the punch to push a second fastener into a workpiece and using the upsetting die to upset the second fastener, or using the punch and the upsetting die to form a clinch joint.