Piercing and coining apparatus

Details Piercing and coining apparatus Piercing and coining apparatus

1975-03-27

1976-03-16

Lanham, C. W.

Metal deforming

With cutting

By shearing tool-couple

72328, 72332, 72432, 72464, B21D 2800

Patent

active

039437450

ABSTRACT:
Apparatus for piercing and coining a metal workpiece is provided. The apparatus includes a punch and a back-up die which accomplish the piercing, and a coining die located around the punch and movable with respect thereto to accomplish the coining. The punch and coining die are driven by a hydraulic ram which enables the overall apparatus to be relatively compact as compared to most heavy-duty dies and is adaptable for use at a station in a machine which also performs other operations on the workpiece. The workpiece is held precisely in position by a plurality of locators including adjustable fingers which contact and position the workpiece.

REFERENCES:
patent: 1920303 (1933-08-01), Grotnes
patent: 2432804 (1947-12-01), Bieske
patent: 2700407 (1955-01-01), Trimble
patent: 2772735 (1956-12-01), Wakelee
patent: 3146749 (1964-09-01), Heinle
patent: 3494168 (1970-02-01), Williamson
patent: 3776016 (1973-12-01), Quinn et al.

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