Abstract: A quick change tool holder for a punch press having a die holder, a die base secured to the puch press and a releasable holding device which is manually actuatable to secure and release the die holder to and from the die base without the use of any tools. The die holder is secured to the die base horizontally, vertically and rotationally by an interengagement between the parts. Preferably the releasable holding device includes a spring biased plunger carried on the die holder which has a portion normally biased into engagement with the die base.

Abstract: A punch press having multiple punch tool rotatable turrets wherein at least one of the punch tools on each of upper and lower turrets is indexable to different angular orientations. Rotation of the indexable punch tools is accomplished by a slideably mounted motor for engagement with a timing pulley, which through a timing belt and a harmonic gear drive, acts to rotate the punch tools. A brake and position sensors are also provided. Synchronization of punch and die orientation is achieved through servos and control.