Metal deforming – By deflecting successively-presented portions of work during... – With cutting of work or product
Patent
1980-10-27
1983-02-08
Combs, Ervin M.
Metal deforming
By deflecting successively-presented portions of work during...
With cutting of work or product
72135, B21F 302, B21F 1100
Patent
active
043721419
ABSTRACT:
A machine for coiling wire to form any one of a number of different size, type and configuration of coil spring and comprising a machine frame in which is mounted a driveshaft, intermediate shaft, camshaft, and feed roller shafts. At the work station of the machine appropriate coiling dyes are supported along with one or more cutters mounted adjacent thereto. The wire is fed to the work station via a pair of feed rollers driven at variable speed, preferably by means of an elliptical gear drive, wherein the feed speed is at a maximum during coiling and decrease to a minimum feed speed for cutting. Wire feed is synchronously interrupted at cutting by means of a cam arrangement that briefly disengaged the feed rollers. This variable speed drive enables a high duty cycle of operation and also enables start up (feed rollers engaging) at reduced speed so as to minimize wire distortion. In an alternate form of wire feed, instead of interrupting drive to the feed rollers by a cam arrangement, a clutch is used to briefly stop motion for cutting.
REFERENCES:
patent: 3740984 (1973-06-01), Bergevin
patent: 3906766 (1975-09-01), Sato
patent: 3934445 (1976-01-01), Lampietti
patent: 4026135 (1977-05-01), Yagusic et al.
patent: 4030327 (1977-06-01), Collins et al.
patent: 4112721 (1978-09-01), Takase et al.
patent: 4211100 (1980-07-01), Sykes
patent: 4285084 (1981-08-01), Brady et al.
Russell Frank S.
Simonelli Robert J.
Combs Ervin M.
Sleeper & Hartley Corp.
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