Coiling machine, method for manufacturing coil spring, and coil spring

A coiling machine comprising:

• a helix forming unit which feeds a wire and forms the wire into a helical shape while feeding;
• a laser heating machine which irradiates the wire formed into the helical shape with laser light;
• cutting components which cut the wire;
• and
• a controller which controls the helix forming unit, the laser heating machine, and the cutting components,
• wherein:
• the cutting components include:
• a mandrel which supports thereon an inner circumferential surface of the wire formed into a helical shape;
• and
• a cutter which applies an impact to an outer circumferential surface of a part of the wire protruding from an end part of the mandrel to thereby cut the wire, and
• the controller is configured to execute processes comprising:
• controlling the helix forming unit to feed the wire and form the wire into the helical shape, and thereafter to stop feeding the wire;
• while the feeding of the wire is stopped, controlling the laser heating machine to irradiate a portion of the wire positioned under the cutter with the laser light to thereby heat the portion;
• and
• after the irradiation of the laser light and while the feeding of the wire is stopped, controlling the cutting components to cut the portion of the wire whose temperature has been raised as compared to a temperature thereof before irradiation with the laser light.