Clutch apparatus for spring making machine

Metal deforming – By deflecting successively-presented portions of work during... – To form helical coil or tube

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Details

B21F 302

Patent

active

046961755

ABSTRACT:
An improved clutch apparatus for a spring forming machine is disclosed having two independently-operating, one-way clutches (i.e., one left hand and one right hand clutch) which commonly drive a pair of wire feed rollers through connecting gears such that 360.degree. of machine use is provided. That is, while one clutch is operating to feed wire, the other clutch is in a return mode such that both clutches constantly reciprocate in a sequential manner thereby permitting continuous wire feeding and forming. Due to the common gear connection, the associated dual feed rollers are operated by whichever clutch is in the drive mode at a given time. The dual clutches are advantageously placed adjacent the front of the wire forming machine away from the planetary gearing system, so as to allow convenient access to the interior of the spring forming machine for maintenance and set-up purposes, as well as to provide the operator with room to add additional forming equipment to accommodate any particular wire forming application as required. Separate cam-actuated rack gears are provided to drive the dual one-way clutches. Alternative eccentric slide type feed drive apparatus for driving the clutches is also disclosed.

REFERENCES:
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CNC Coil Former/Multi Coil Former Brochure, Okuno Machine Tool, Osaka, Japan (Undated).
Brochure entitled, "Advanced Duplex Wire Working Machines for Torsion Spring and Wire Form Production", Sleeper & Hartley Corp., Worcester, Mass.
Brochure entitled, "Computerized Extension Spring Making Machines", Itaya Engineering Ltd. (Comtech of Farmington Hills, Michigan) (Undated).

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