Quick change tooling for press machine

Details Quick change tooling for press machine Quick change tooling for press machine

B - Operations, Transporting

21

D

113/78

B21D 37/06 (2006.01) B21D 7/06 (2006.01) B21D 37/04 (2006.01)

Patent

CA 2027263

ABSTRACT OF THE DISCLOSURE Tools and tool supports in a press which permit a tool changeover operation to be performed quickly and easily are disclosed. A pivot arm is carried on a ram of the press. A punch has an aperture formed therethrough, allowing it to be slidably mounted on the pivot arm. The punch is normally retained by a keeper for use in a first operating position on the pivot arm. The punch may be reversed for use in a second operating position by raising the keeper out of its retaining position and moving the punch along the pivot arm toward a second position. There, the punch can be rotated one hundred eighty degrees about the pivot arm. Then, the punch is moved back to the first position. The keeper automatically retains the reversed punch adjacent to the first support block when the punch is moved back to its original position. To remove the punch from the pivot arm, a retainer pin is removed, allowing one end of the pivot arm to pivot away from the ram. The punch is then removed from the pivot arm, allowing a new punch to be installed thereon. A pivot block assembly supports the workpiece on the base plate when engaged by the tool. The assembly includes a pivot lid having a flat upper surface. The pivot lid is pivotably mounted on the base plate such that the upper surface thereof is pivoted to lie flat against the lower surface of the workpiece when the tool bends the workpiece.

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