piston pin forming

  • Forging Undercuts in Steel Pistons

    In a standard forging process the ram of the forming press moves downward vertically, the upper dies makes contact with the billet and forms it until the desired (pre-) form is achieved. But, the pin bores are located orthogonally to the press movement, so the forming direction has to be changed by 90° to a horizontal direction.

  • Piston pin construction and method for forming same ...

    Feb 03, 1987 · A piston pin comprising a tubular body enclosed by end caps, ... Piston pin construction and method for forming same . United States Patent 4640641 . Abstract: A piston pin comprising a tubular body enclosed by end caps, the end caps being secured to the tubular body by an extrusion extending into a recess in the inner periphery of the tubular ...