A continuously variable transmission (CVT) having a main shaft configured to support and position various components of the CVT. Shift cam discs cooperate with ball-leg assemblies to shift the transmission ration of the CVT. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed.

A method for working a functional part, which extends in a longitudinal direction and has a lateral surface that surrounds a longitudinal central axis of the functional part running in the longitudinal direction and has an end face bounding the functional part at a free end in the axial direction, may involve pressing a punch that can be moved in the longitudinal direction of the functional part against the end face of the functional part, while the functional part is initially located in a cavity of a tool, at least over a partial portion of its longitudinal extent that adjoins its free end, which cavity is bounded in the radial direction with respect to the longitudinal central axis by a wall surface surrounding the lateral surface and lying at least partially against the lateral surface, and pulling off the tool from the functional part over the free end of the functional part over a pulling-off travel, while the punch remains pressed against the end face of the functional part, at least over a partial travel of the pulling-off travel of the tool from the functional part. A material flow of material of the functional part is brought about by the tool during the pulling-off of the tool from the functional part.

A spindle drive (1), drive spindle (8), and a production method for such a spindle, particularly for a seat adjustment or a servo steering mechanism, having a spindle thread (19) for receiving a spindle nut (9), wherein a drive gear (5) made from synthetic material is injection-molded in a non-rotatable manner on the drive spindle (8), said cog having external toothing (21), by means of which the drive spindle (8) can be caused to rotate, wherein within an axial extension (27) of the drive cog (5) the threaded spindle (8) has a recessed region (31) with a smaller external diameter (30) between two holding regions (28, 38) with a larger outer diameter (29, 39).

A cartridge drive gear assembly for holding a drum coupling includes a drive gear having an outer surface and an inner surface, the inner surface including inner projections which extend into the interior of the drive gear and includes at least two voids disposed on opposing sides of the inner projections, and at least one slot disposed in the inner surface.

A form rolling apparatus for applying in-feed form rolling to a rod-shaped material includes a support portion configured to support the rod-shaped material to be axially rotatable, a round die formed with die teeth on an outer periphery thereof, the die teeth configured to be positioned facing an outer periphery surface of the rod-shaped material, and a moving device moving the round die so that a distance of axes of the round die and the rod-shaped material changes. The die teeth includes forming die teeth for generating gear teeth on the outer periphery surface of the rod-shaped material and finishing die teeth enhancing a tooth surface precision of the generated gear teeth by engaging with the generated gear tooth and rotating. The finishing die teeth are formed in a configuration each having an addendum that does not come to contact a bottom land of the generated gear teeth.

[Task] To provide a method that makes it possible to easily, inexpensively and accurately manufacture a machined part with a simple configuration and an excellent strength. [Means for Solution] In a method for manufacturing a machined part according to the invention, a dislocation is partially introduced (S3), through shot peening, only into a surface layer of a raw material 1 in a region 1a to be machined, graphite is partially deposited (S4), through heating, only in the surface layer of the region 1a to be machined, and then, the surface layer of the region 1a where graphite is deposited is removed, through machining (S5), only by an amount corresponding to a working margin 1c, thereby manufacturing a machined part 1.