Method for wheel manufacture by punch forming

Details Method for wheel manufacture by punch forming Method for wheel manufacture by punch forming

1988-12-29

1990-02-06

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Wheel making

29802, 72327, B21H 102

Patent

active

048979090

ABSTRACT:
Method for punch forming center pilot opening or other wheel mounting surfaces in a pierceable metal performed wheel disc blank mounted internally of the wheel rim. A combination pierce and shave punch forms the disc opening in a single working stroke and produces a one-piece scrap slug containing both the pierced and shaved metal removed from the disc. The punch has a correlated dimensional relationship between disc material thickness, pierce punch diameter, shave punch diameter and shave punch set back from the pierce punch. A smoother, more cylindrical and more dimensionally consistent opening surface is obtained than with conventional pierce-only punches.

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patent: 4573338 (1986-03-01), Daudi
patent: 4646434 (1987-03-01), Daudi
patent: 4728842 (1988-03-01), Martin
patent: 4733448 (1988-03-01), Daudi

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