A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed by forging, and a joining end surface formed on an outer surface of the bottom portion, and preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member. The method also includes bringing the joining end surfaces of the cup and shaft members into abutment against each other, and welding the cup and shaft members from an outer side of the cup member to an abutment portion between the cup and shaft members in a radial direction of the cup members.

A tripod constant-velocity joint includes: an outer joint member having a cavity elongated in a longitudinal direction and three roller tracks; an inner joint member having a center body and three journals outwardly radially protruded from the center body; and three roller assemblies respectively coupled to the journal in a state of being respectively disposed in the roller tracks. The respective roller assembly comprises: an inner race which is connected to the journal and is provided with a first inner ball groove and a second inner ball groove on both lateral sides thereof; a first ball array and a second ball array respectively having a plurality of balls which are respectively disposed in the first inner ball groove and in the second inner ball groove; and a ball cage which restricts movements of the first ball array and the second ball array in a longitudinal direction thereof.

A method of manufacturing an outer joint member of a constant velocity universal includes forming cup and shaft members of medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed by forging, and a joining end surface formed on an outer surface of the bottom portion after the forging, preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member, and bringing the joining end surfaces of the cup and shaft members into abutment against each other. The method also includes welding the cup and shaft members from an outer side of the cup member to an abutment portion between the cup and shaft members in a radial direction of the cup member.

A driveline joint may include a driveline shaft that has a plurality of slots and a shaft coupling positioned in an interior of the driveline shaft in which the shaft coupling includes one or more openings with each of the openings corresponding to one or more respective slots of the plurality of slots included in the driveline shaft. The driveline joint may include one or more spherical bearings that are each positioned between an interior lateral surface of the driveline shaft and an exterior lateral surface of the shaft coupling and against one of the openings of the shaft coupling. The driveline joint may include one or more fasteners, wherein each of the fasteners extends through one of the slots and one of the openings of the shaft coupling.

A first constant velocity joint is equipped with a cup part made of a light alloy. First ball grooves that receive a torque from torque transmitting members are formed on an inner wall of the cup part. A high hardness layer made of ceramic or cermet as a principal component thereof is formed on an inner surface of the cup part including at least inner surfaces of the first ball grooves.

For butt-welding, which includes bringing joining end surfaces of a cup member and a shaft member into abutment against each other and radiating a high energy intensity beam from a radially outer side, the shaft member has a recess on a radially inner side of the joining end surface to obtain a welded portion having a closed hollow cavity on a radially inner side after butt-welding. The joining end surface (protruding surface) of the cup member protrudes toward a radially inner side with respect to an inner diameter of the joining end surface of the shaft member. With this, a welded portion of an outer joint member of a constant velocity universal joint, which is manufactured by joining the cup member and the shaft member, can be improved in strength and quality.

A tripod joint can include a joint outer part with a first longitudinal axis and a cavity running parallel to the first longitudinal axis with an open end, three recesses running parallel to the first longitudinal axis being formed in the joint outer part, and a joint inner part with a second longitudinal axis., The tripod joint can include at least one central body on which three trunnions are formed with trunnion axes extending radially from the second longitudinal axis, wherein a roller body is arranged on each of the trunnions, which roller body has at least one outer ring and an inner ring rotatable therewith about a common axis of rotation, as well as bearing bodies arranged between the outer ring and the inner ring; wherein each roller body is movably received in the recesses along the first longitudinal axis.

The present disclosure relates to an angle-adjustable tripod universal joint, which includes a tripod, 3 rollers and a universal joint outer part, an inner wall of the universal joint outer part is provided with 3 roller track, each roller is disposed in the roller track and rolls along the roller track, each spherical shaft head on the tripod is rotatably disposed in an inner cavity of the roller, the inner wall of the roller track is provided with a guiding groove, the peripheral shape of the roller is cylindrical, a bottom surface of the guiding groove is a plane surface, two side surfaces of the guiding groove are flat surfaces perpendicular to the plane surface, a part of the peripheral surface of the roller is inserted into the guiding groove, and the peripheral surface of the roller is tangent to the plane surface.

The articulated shaft has an axial securing means which includes a securing ring which has a spring prestress and acts on the articulated shaft via a connecting device of the articulated shaft to a housing cover of a joint housing. It is provided, in particular, that the housing cover is made of aluminum, on which a bearing disk made from steel lies which supports the prestressed securing ring on the outer side. This arrangement avoids it being possible for the securing ring to bury itself into the housing cover made from aluminum and a greater play being produced and the axial securing action no longer being ensured.

A constant velocity joint includes: an outer joint member having a raceway groove; an inner joint member having a leg shaft; a roller that is able to roll on the raceway groove; and a needle bearing that supports an inner periphery of the roller such that the inner periphery of the roller is able to rotate with respect to the leg shaft. The leg shaft includes: a roll portion that supports the needle bearing; a contact portion that is able to contact an end face of the needle bearing, the end face facing a first side in the direction of a central axis of the needle bearing; and a recess portion formed between the roll portion and the contact portion, in a position where the recess portion is recessed from a space in which the needle bearing is disposed.