METHOD AND DEVICE FOR MANUFACTURING DRIVING FORCE TRANSMISSION DEVICE FOR VEHICLE

摘要

A method for manufacturing a driving force transmission device for a vehicle having a case and a ring gear that is fitted to the outer peripheral surface of said case and transmits driving force from a drive source, the method being equipped with: a welding process whereby an annular flange is provided on the case or the ring gear and butt welding is performed by lapping a welding bead along the contact portion of one side surface of the annular flange and the case or the ring gear; a measurement process whereby the exterior shapes of the other side surface of the annular flange adjacent to the one side surface are measured; and an assessment process whereby the quality of the weld is assessed on the basis of the shape of the location corresponding to the lapped portion of the welding bead, of the shapes measured in the measurement process.