Abstract: The outer peripheral surface (32) and the inner spherical peripheral surface (34) of a cage (30) of a double-offset constant velocity universal joint are cut after being quenched. More specifically, to finish the outer peripheral surface (32) of the cage (30) made up of a spherical portion (32a) and tapered portions (32b, 32c), the spherical portion (32a) and the tapered portions (32b, 32c) are cut after being quenched. Then, the spherical portion (32a) is cut at a cutting speed lower than that for the tapered portions (32b, 32c), thereby providing a better roughness to the cut surface of the spherical portion (32a) than to the cut surface of the tapered portions (32b, 32c).

Abstract: A pod type universal joint has a roller assembly rotatably carried by a number of trunnion journals. The roller assembly includes a spherical roller having its outer peripheral surface of a true sphere-shape and needle rollers arranged between the spherical roller and each of the trunnion journals. A raceway for the needle rollers and flanges for restricting an axial movement of the needle rollers are formed on an outer periphery of each of the trunnion journals. A projection beyond the circumscribing circle of the needle rollers is provided on the outer periphery of the tip end of each of the trunnion journals by performing plastic working on the tip end surface of each of the trunnion journals.

Abstract: The outer peripheral surface (32) and the inner spherical peripheral surface (34) of a cage (30) of a double-offset constant velocity universal joint are cut after quenched. More specifically, to finish the outer peripheral surface (32) of the cage (30) made up of a spherical portion (32a) and tapered portions (32b, 32c), the spherical portion (32a) and the tapered portions (32b, 32c) are cut after quenched. Then, the spherical portion (32a) is cut at a cutting speed lower than that for the tapered portions (32b, 32c), thereby providing a better roughness to the cut surface of the spherical portion (32a) than to the cut surface of the tapered portions (32b, 32c).

Abstract: A pod type universal joint is disclosed in which a roller assembly (30) is rotatably carried by each trunnion journal (26), the roller assembly (30) comprising a spherical roller (32) having its outer peripheral surface of a true sphere-shape and needle rollers (34) arrayed between the spherical roller (32) and each of the trunnion journal (26), a raceway (28) for the needle rollers (34) and flanges (28a and 28b) for restricting an axial movement of the needle rollers (34) being formed on an outer periphery of each of the trunnion journals (26), a projection (38C) beyond the circumscribing circle of the needle rollers (34) being provided on the outer periphery of the tip end of each of the trunnion journals (26) by performing plastic working on the tip end surface of each of the trunnion journals (26).