Twisted stem abrading tool

Details Twisted stem abrading tool Twisted stem abrading tool

1995-10-11

1997-02-04

Kisliuk, Bruce M.

Abrading

Flexible-member tool, per se

Laminate

451536, 15179, 15206, 15 221, B24D 1500

Patent

active

055992250

ABSTRACT:
A process for forming a twisted stem tool uses a specially designed clamping jaw fixture at the nose or bight portion of a half-round wire or cotter pin which helps to reduce the required clamping force and distribute that force over the entire wire-fill material interface. The jaws of the clamping fixture engage the outside of the nose over a substantial area, and in some forms actually bite into the wire or pin. After the twisting operation, the stem is placed in a swaging or coining press, and the stem beyond the fill material is reformed into a three or six-sided drive stem. The cold flow of the metal to form the flat sides locks the twisted half round wire or pin sections together so that the stem will resist unwinding if the tool is driven in a reverse direction. The coining of the stem providing flats provides a tighter confinement of the bundle of fill material at the stem, and enables a common three or six jaw Jacob's style chuck, for example, to obtain a more secure grip.

REFERENCES:
patent: 1296719 (1919-03-01), Veeck
patent: 2339123 (1944-01-01), Volckening
patent: 2763104 (1956-09-01), Lindenborg
patent: 3806980 (1974-04-01), Belsito
patent: 3871139 (1975-03-01), Rands

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