Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1997-07-01
1998-11-03
Hail, III, Joseph J.
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
72135, 724521, B21F 304, B21F 302, B21J 918
Patent
active
058292934
ABSTRACT:
An automatic spring formation apparatus includes a frame on which a tool support plate is mounted. A plurality of tool sets are substantially angularly equally-spaced mounted on the support plate and extending in a radial direction with respect to a center of the support plate. Each of the tool sets has a slide mounted thereon and movable in the radial direction with a tool holder which holds a spring formation tool thereon fixed thereon to be movable toward/away from the center of the support plate. The tool sets are releasably fixed on the support plate and are selectively movable along a circular path about the center of the support plate for adjusting the angular positions thereof. A wire is fed through a hole formed on the center of the support plate to be acted upon by the tool for making a spring. The slide is provided with a cam follower and a cam driven by a motor is provided on the base plate to drivingly engage the cam follower so as to drive the tool to move in the radial direction. Springs are provided between the slide and the base plate to achieve a close engagement between the cam and the follower.
REFERENCES:
patent: 4893491 (1990-01-01), Ohadi et al.
patent: 5117668 (1992-06-01), Philpot et al.
patent: 5452598 (1995-09-01), Cheng
patent: 5657657 (1997-08-01), Welsh et al.
Butler Rodney
Hail III Joseph J.
Minyu Machinery Corp. Ltd.
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