Ironing punch for making socket of ball-and-socket joint and met

Details Ironing punch for making socket of ball-and-socket joint and met Ironing punch for making socket of ball-and-socket joint and met

1991-08-02

1993-02-16

Jones, David

Metal tools and implements, making

Blank or process

Die

723534, B21J 1302

Patent

active

051860821

ABSTRACT:
An ironing punch for ironing the socket of a ball-and-socket joint has a punch body with a plurality of circumferentially spaced ridges disposed on an outer circumferential surface thereof and extending from a distal end surface. The ironing punch also includes a plurality of ridge-shaped dies fitted respectively in recesses defined between the ridges on the punch body. Each of the ridges is ground by a single grinding wheel with the ridge-shaped dies removed from the punch body, and each of the ridge-shaped dies is also ground by a single grinding wheel. The punch body has relief grooves for preventing the grinding wheel from physical interference with junctions between the recesses and the distal end surface.

REFERENCES:
patent: 4406146 (1983-09-01), Suzuki
patent: 4610155 (1986-09-01), Langford et al.
patent: 4768368 (1988-09-01), Langford et al.
patent: 4843864 (1989-07-01), Welschof
patent: 5001920 (1991-03-01), Ishinaga et al.

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