Spring manufacturing apparatus

Details Spring manufacturing apparatus Spring manufacturing apparatus

2006-06-20

2008-03-18

Banks, Derris H. (Department: 3725)

Metal deforming

By deflecting successively-presented portions of work during...

To form helical coil or tube

C072S140000, C072S446000, C072S452100

Reexamination Certificate

active

07343766

ABSTRACT:
A spring manufacturing apparatus with a reduced number of driving sources, yet capable of adjusting the relative positions among the bending dices with higher precision when manufacturing a spring is to be provided. A second bending dice mounting slider and a third bending dice mounting slider are symmetrically located about a center line extended from a moving direction of a first bending dice mounting slider. An arm mechanically connects the first bending dice mounting slider and the second bending dice mounting slider, or the first bending dice mounting slider and the third bending dice mounting slider, so that either of a driving source that drives the second bending dice mounting slider or a driving source that drives the third-bending dice mounting slider moves the first bending dice mounting slider, thus to determine a winding direction of a wire for manufacturing a spring.

REFERENCES:
patent: 3934445 (1976-01-01), Lampietti
patent: 5657657 (1997-08-01), Welsh et al.
patent: 6000265 (1999-12-01), Itaya
patent: 6006572 (1999-12-01), Tsuritani
patent: 6393888 (2002-05-01), Sautter et al.
patent: 10-128484 (1998-05-01), None
patent: 2889553 (1999-02-01), None
patent: 2000-317563 (2000-11-01), None
patent: 3286236 (2002-03-01), None

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