Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube
Patent
1988-04-25
1989-12-05
Echols, P. W.
Metal deforming
By deflecting successively-presented portions of work during...
To form helical coil or tube
29173, B21F 304
Patent
active
048844284
ABSTRACT:
The present invention relates to a spring producing apparatus which is constituted such that a drive roller (2) is connected to a controlled speed motor (13) with a clutch brake via a suitable transmission mechanism while a bending die (7) and a pitch tool (10) are connected to adjusting actuators (16) and (22) by way of cams (17) and (23), respectively, and a cutter (11) is connected to a cutting actuator, whereby operations of the motor (13) and the actuators (16) and (22) are set and controlled suitably by a controller. The present invention further relates to a spring producing apparatus which comprises a chuck (100) connected to a reversible motor with a clutch brake by way of a transmission mechanism, a metal core (101) fittably and removably mounted on the chuck (100), a pitch tool/guide member (117) mounted on a linear guide (110) which is moved in a parallel relationship to the metal core on the chuck, a wire stock (103) which is fed through a nozzle (120) of the pitch tool/guide member (117) being fitted into and arrested by the chuck (100) whereafter the wire stock (103) is wrapped into coils around the metal core (101), an actuator (126) disposed on the linear guide (110) for movement together with the pitch tool/guide member (117) so as to be pushed against or pulled by the guide (117) to apply a predetermined pitch to the coils, and a cutter (152) which is moved up and down by operation of a cutting actuator (153) after releasing of the push or pull at the actuator (126).
REFERENCES:
patent: 2811193 (1957-10-01), Iversen
patent: 3031006 (1962-04-01), Fokkinga
patent: 3186820 (1965-06-01), Adkins
patent: 4084420 (1978-04-01), Tsutsumino
patent: 4616682 (1986-10-01), Groenewegen
patent: 4715202 (1987-12-01), Shibata et al.
Echols P. W.
Oujevolk George B.
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