Method and apparatus for backing up mandrel exit holes in knuckl

Details Method and apparatus for backing up mandrel exit holes in knuckl Method and apparatus for backing up mandrel exit holes in knuckl

1987-12-16

1989-03-07

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

292811, 292815, 292816, 292835, 29559, 72370, B21D 3900, B23P 1102

Patent

active

048094200

ABSTRACT:
A pair of back-up members (32, 42) are inserted between adjacent projection (4) of a workpiece (2). Openings (36, 46) through the members (32, 42) are aligned with holes (6) through the projections (4). A wedge (54) is driven between the members (32, 42) and forces them against outer surface portions (5) of the projections (4) surrounding the holes (6) and radial end surfaces (9) of bushings (7) positioned in the holes (6). A mandrel (62) is pulled through the bushings (7) and the openings (36, 46) to install the bushings (7). Another embodiment of back-up members (132, 142) has a plurality of openings (136, 146) for use with a workpiece (102) having a plurality of rows of axially aligned holes (106). This embodiment is preferably used with a locator (70) which has two rods (74) for holding the holes (106) and openings (136, 146) in accurate alignment.

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