Patent ID: 8881627

Claim:
A workpiece supply/conveyance device, comprising: a workpiece machining apparatus configured to machine an unmachined workpiece and produce a machined workpiece; an unmachined workpiece loading position configured to receive the unmachined workpiece; a workpiece delivery/reception position at which the workpiece machining apparatus receives the unmachined workpiece and unloads the machined workpiece; and a plurality of arms radially extending from a rotation center, configured to integrally rotate in only one direction around the rotation center, and move the unmachined workpiece from the unmachined workpiece loading position to the workpiece delivery/reception position, wherein a tip of each of the plurality of arms comprises an unmachined workpiece holding section configured to hold the unmachined workpiece at an upstream side of the one direction, and a machined workpiece holding section configured to hold the machined workpiece at a downstream side of the one direction, and the plurality of arms only rotates in the one direction so that one of the plurality of arms unloads the unmachined workpiece to the workpiece machining apparatus from the unmachined workpiece holding section after the one of the plurality of arms received the machined workpiece on the machined workpiece holding section from the workpiece machining apparatus at the workpiece delivery/reception position.