Automatic quick press for manufacturing small-diameter short-shank bolts

Claim 1

A press for the production of short-shank small-diameter bolts, comprising; a forming head rotatable about an axis and provided with two angularly spaced die members disposed along an arc; a press ram axially aligned with said head and provided with three forming tools arrayed along an arc corresponding to the arc of said die members and with an angular spacing between said tools equal to the spacing between said die members, said tools including a central tool for effecting a first shaping operation upon a workpiece received in a registering die member, and first and second tools for effecting a subsequent forming operation upon a workpiece received in a registering die member; means for axially displacing said ram toward and away from Said head for forming of workpieces in said die members by the tools registering therewith on each forward stroke of the ram; indexing means for angularly oscillating said head in the cadence of operation of said ram and for temporarily locking said head in a first extreme angular position wherein said central tool is aligned with a first of said die members and said first tool is aligned with the other die member, and a second extreme angular position wherein said central tool is aligned with said other die member and said second tool is aligned with said first die member; gripper means engageable with workpieces in succession for introducing them into said die members upon positioning of said die members substantially in alignment with said central tool; and respective ejectors cooperating with said die members when the latter are offset from alignment with said central tool for ejecting shaped workpieces from said head; and drive means for said ejectors, said gripper means, said indexing means and said rams for synchronously operating same.