Bending device and spring manufacturing machine

A wire bending device and a spring manufacturing machine are provided that are capable of bending a wire in a desired bending form without intermitting the processing operation. A wire bending device (40), comprising a processing part (47a) having two protruding parts (47c, 47d) that protrude from an end surface of a pillar part (47b) and that bend a wire, wherein at least one of the protruding parts (47c) has a curved surface part, and the wire is disposed between the two protruding parts (47c, 47d), the pillar part (47b) is rotated around an axis of the pillar part (47b) to bend the wire along the curved surface part (47c), the bending device (40) comprises plural processing parts (47a), curvature of the curved surface part of the protruding part in each processing part (47a) are different, and the bending device (40) further comprises: a rotary part (47) that supports the processing parts (47a) and rotates about an axis intersecting the length direction of the pillar part (47b); an accommodating part (43) that is cylindrical and accommodates the rotary part (47) at an end part of the accommodating part (43) so as to be rotatable; and a mechanism that rotates the accommodating part (43) about an axis of the accommodating part. The invention also relates to a spring manufacturing machine comprising such a bending device.