Universal joint outer race and method for manufacturing the same

1. Field of the Invention There are provided an outer race of a constant velocity joint which has better operability and lower cost, and a method for manufacturing the same. First, an outer race having a shaft portion and a cylindrical portion is prepared as a blank. Then with a punch set fitted with an initial clearance in the radial direction into the inner periphery of the cylindrical portion the cylindrical portion is pressure-inserted into the die from the opening side thereof to form the ball rolling grooves on the inner periphery of the cylindrical portion 1with the ironing operation being stopped when the ball rolling grooves of a predetermined length is formed while leaving an inner-most portion of cylindrical portion intact, thereby forming a margin recess for a grinding wheel at the base of the ball rolling groove