| 主权项 |
1. A fixed type constant velocity universal joint, comprising:
an outer joint member comprising a cup section having a plurality of track grooves formed in a radially inner surface thereof; an inner joint member having a plurality of track grooves formed in a radially outer surface thereof; a plurality of torque transmitting balls, which are interposed between the plurality of track grooves of the outer joint member and the plurality of track grooves of the inner joint member, and are configured to transmit torque therebetween; and a cage, which is interposed between the radially inner surface of the outer joint member and the radially outer surface of the inner joint member, the cage comprising pockets configured to retain the plurality of torque transmitting balls therein, the outer joint member further comprising a cutout portion that is formed at least at each corner portion on an opening side of the cup section, which is defined between a radially inner opening end portion of each of the plurality of track grooves and a radially inner spherical surface portion formed between the plurality of track grooves, the cutout portion being configured to prevent the cage from interfering with the outer joint member when the cage is incorporated into the outer joint member, the cutout portion and the plurality of track grooves of the outer joint member being finished by cold-forging ironing using a single ironing punch. |
