Patent ID: 8302443

Claim:
A spring manufacturing apparatus comprising: a wire rod feeding unit which includes wire rod feeding rollers and feeds a wire rod; a quill which guides the wire rod fed from the wire rod feeding unit; a supporting plate for supporting the quill; a plurality of tool holders holding respectively a plurality of processing tools which process the wire rod to a spring; a supporting body which supports the tool holders and includes at least one of an X-axis movable body which moves in an X-axis direction, a Y-axis movable body which moves in a Y-axis direction, or a Z-axis movable body which moves in a Z-axis direction of a XYZ orthogonal coordinate system representing a moving direction of the wire rod fed from the wire rod feeding unit as the Z-axis; an opening, formed in the supporting body, in which the quill is arranged; and a box to which the supporting plate is fixed, wherein the tool holders are radially arranged around an opening at the center of the front surface of the supporting body, wherein the quill, which is supported by the supporting plate, is inside the opening, wherein the supporting body includes the Z-axis movable body, wherein the apparatus further comprises a Z-axis movable body driving source which drives the Z-axis movable body to move the supporting body in the Z-axis direction, wherein the opening is cut out in an arch shape, and wherein the supporting plate is inside the opening and forms a shape corresponding to the arch shape.