Method and apparatus for ironing and trimming cylindrical portio

Details Method and apparatus for ironing and trimming cylindrical portio Method and apparatus for ironing and trimming cylindrical portio

1992-08-04

1994-02-22

Crane, Daniel C.

Metal deforming

With cleaning, descaling, or lubrication of work or product

Lubricating

72327, 72347, B21D 2416

Patent

active

052877132

ABSTRACT:
System for ironing a cylindrical portion of a workpiece, and trimming one axial end of the cylindrical portion remote from a radial bottom portion. The system uses a stepped punch having a small-diameter portion and a large-diameter portion, and a die having a die hole whose inner surface includes a tapered portion and a land portion adjacent to the small-diameter end of the tapered portion. With the small-diameter portion of the punch in abutting contact with the radial bottom portion of the workpiece, the punch and die are moved relative to each other axially of the workpiece, from an initial position in which the radial bottom portion is ahead of the land portion of the die in the moving direction, to a final position in which at least the leading end of the large-diameter portion of the punch is located within the land portion. This relative movement causes removal of a waste material at the trailing end of the workpiece.

REFERENCES:
patent: 1200593 (1916-10-01), Currie
patent: 1524183 (1925-01-01), Knaebel
patent: 1638995 (1927-08-01), Hodge
patent: 1665203 (1928-04-01), Delf
patent: 2611475 (1952-01-01), Slater
patent: 3670554 (1972-06-01), Kienzler
patent: 4346580 (1982-08-01), Saunders
patent: 4541265 (1985-09-01), Dye

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