4 Sensing Methods to Verify Part Ejection in Metal Forming by Pepperl+Fuchs
When punching, notching, or trimming metal strips, unwanted material must be cleared before the next press downstroke. If scrap or formed parts inadvertently remain, the press must be stopped before its motion reaches the critical angle, the “point-of-no-return” at which further movement risks damage to the press and die. A variety of precise and reliable sensors are available to protect the die.