Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1983-05-13
1985-04-09
Combs, E. Michael
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
B21F 302
Patent
active
045093520
ABSTRACT:
A spring coiling machine wherein the wire is fed lengthwise and is acted upon by a tool receiving motion from two coaxial rotary disc cams through the medium of follower levers which track the respective cams. One of the cams controls the position of the tool during the initial stage or stages and the other cam controls the position of the tool during the remaining stage or stages of the making of each of a series of springs. The angular position of each cam with reference to the other cam is adjustable to thereby change the timing of transmission of motion from the adjusted cam to the tool during each cycle of the machine. The positions of the follower levers with reference to the associated cams are also adjustable to thereby vary the extent of movement of the tool during each cycle. Each of the two cams forms part of a group of coaxial cams, and any selected cam of each group can be shifted axially into engagement with the respective follower lever to thereby change the pattern of movement of the follower levers during engagement with the selected cams. A pawl can be provided to hold one of the follower levers out of engagement with the respective cam before and/or while the other cam is tracked by the respective follower lever so that the position of the tool is then determined by the pawl or by the other follower lever and the associated cam.
REFERENCES:
patent: 537472 (1895-04-01), Miller
patent: 2161084 (1939-06-01), Peterson et al.
patent: 2175426 (1939-10-01), Blount et al.
patent: 2373427 (1945-04-01), Stickney
patent: 2455863 (1948-12-01), Halvorsen
patent: 2765022 (1956-10-01), Bergevin
patent: 3740984 (1973-06-01), Bergevin
Combs E. Michael
Kontler Peter K.
Schenker Maschinen AG
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