COILING MACHINE AND COIL SPRING MANUFACTURING METHOD

Abstract: a coiling machine comprises a feed unit feeding a wire in a feed direction, a helix formation unit bending the wire in a perpendicular direction, thereby forming a coil spring extending into a helical shape toward a formation direction, a laser heater heating a portion of the wire, and a cutting unit cutting a site of the wire. when the formation direction is defined as 0�, and an opposite side of the feed direction is defined as 90�, and an opposite side of the formation direction is defined as 180�, and the feed direction is defined as 270�, an irradiation direction of the laser light forms a first angle which is greater than or equal to 0� and less than or equal to 270� with the formation direction.

Inventor(s): Hisashi IWATA, Shogo ICHIKAWA, Yuichiro YAMAUCHI, Ryo TANAKA

CPC Classification: B21F3/02 (WORKING OR PROCESSING OF METAL WIRE ({reducing diameter by} rolling of metal ; by drawing, auxiliary operations used in connection with metal-working without essentially removing material ; bundling articles ))

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