Honda Motor Co., Ltd.
DRIVE SHAFT AND METHOD OF PRODUCING DRIVE SHAFT

Abstract:

A drive shaft includes a first annular wall and a second annular wall joined together via a friction-welded portion. The first annular wall and the second annular wall have outer diameters of 30 to 50 mm and wall thicknesses of 3 to 5 mm. A burr created at the friction-welded portion has a connection radius of greater than or equal to 0.5 mm, a base radius of greater than or equal to 0.5 mm, a burr base angle of less than or equal to 40.degree., and a burr slope length of 0.2 to 5 mm.