The invention relates to a rolling device for rolling work pieces with toothing, in particular gear wheels, with (g) a first shaping tool (14.1), (h) at least one second shaping tool (14.2) and at least one guide (16) designed for the guided movement of the shaping tools (14.1, 14.2) relative to a work piece, such that a first region (B1) of a tooth flank (38) of the work piece can be shaped with the first shaping tool (14.1), (i) wherein the first shaping tool (14.1) has a first roller (46.1) that is rotatably mounted about a first tool rotational axis (D14.1), (j) wherein the second shaping tool (14.2) has a second roller (46.2) that is rotatably mounted about a second tool rotational axis (D.sub.14.2) and (k) wherein the first roller (46.1) has a first effective axial thickness (d.sub.1) on the circumference thereof.
According to the invention, the second roller (46.2) has a second effective axial thickness (d.sub.2) on the circumference thereof, which differs from the first effective axial thickness (d.sub.1) such that a second region (B2) of the tooth flank (38) that is different from the first region can be shaped with the second shaping tool (14.2).

An internal gear includes plural teeth each including an addendum area, a dedendum area, and an intermediate area including a protrusion and a recessed portion. The intermediate area includes a first border position provided at a position between the protrusion and the recessed portion, a second border position provided at a position between the intermediate area and the dedendum area, a third border position provided at a position between the intermediate area and the addendum area, a first average radius provided from the first border position to the second border position, and a second average radius provided from the first border position to the third border position. The first average radius is smaller than the second average radius. The addendum area includes a first curvature radius provided at a first center position in a tooth thickness direction, the first curvature radius being set at a maximum.

A gear manufacturing method includes a step of preparing a gear blank; a step (teeth cutting step) of cutting the gear blank to form a half-finished gear having a plurality of gear teeth; a step (heat treatment step) of heat-treating the half-finished gear having the gear teeth; and a step (form rolling step) of rolling the half-finished gear which is subjected to the heat treatment, in which the gear teeth of the half-finished gear which is subjected to the teeth cutting step is formed with protuberances on both sides in a circumferential direction, and at the form rolling step, the protuberances are pressed by a rolling die, so that the half-finished gear becomes a gear.

A planet (11) for a planetary rolling contact gear, along whose planetary axis a middle section (12) having a larger diameter and, axially on both sides of the middle section (12), end sections (13) having a smaller diameter are formed, wherein a first engagement profile (14) is formed on the lateral surface of the planet (11) in the middle section (12) and a second engagement profile (15) is formed on the lateral surface of the planet (11) in the end sections (13), wherein the first engagement profile (14) has a plurality of first teeth (16) that are arranged in an annular manner around the planetary axis, wherein first grooves (17) arranged in an annular manner about the planet axis are formed between successive first teeth (16), wherein the two first edge teeth (23) located at the ends of the middle section (12) are formed within and at a distance from a tooth contour (18) of the first teeth (16) of the middle section (12).

A method for profiling a profile body by cold forming a workpiece having a longitudinal axis and a cylindrical outer surface extended along the longitudinal axis. The workpiece carries out a rotation movement about the longitudinal axis and is machined by a tool in a multitude of successively executed reshaping engagements. The tool is held by a tool holder, to be rotatable about a tool axis. The tool holder is mounted in an orbiting body to be rotatable about a rotation axis, is driven into a rotation movement about its rotation axis, and is driven into an orbiting movement by the orbiting body. Rotation movement of the workpiece is synchronised with orbiting movement of the tool holder and rotation movement of the tool holder is synchronised with orbiting movement of the tool holder. The tool axis is different from the rotation axis.

A multi-station, reciprocating die pattern forming machine (500), including a pair of parallel reciprocal slide members (502, 503) with spaced pairs of pattern forming dies (504) thereon reciprocal between an insert position and an eject position. Drive mechanism (505, 506, 510) reciprocates the die pairs alternately between the insert position and eject position. Mechanism delivers and positions a pattern receiving blank (600) to a pair of dies when in the insert position. Axial translation of the dies causes the dies to rotate the blank at a center of process and impart a pattern upon the blank. Servo-motors on blank positioning mechanism provide feedback recognition of the position of the blanks during processing. The invention also relates to a method of patterning blanks.

An apparatus for smoothing an inner toothing and/or an outer toothing of a component part. At least two radially adjustable smoothing gears, which engage in the inner toothing and/or outer toothing, are rotatably arranged inside the inner toothing and/or outside of the outer toothing. During smoothing, the component part is not firmly clamped but rather only rests loosely on a support. A thrust ring is provided at least at one of the smoothing gears for limiting axial movements of the component part, which occur during smoothing.

An apparatus for smoothing an inner toothing and/or an outer toothing of a component part. At least two radially adjustable smoothing gears, which engage in the inner toothing and/or outer toothing, are rotatably arranged inside the inner toothing and/or outside of the outer toothing. During smoothing, the component part is not firmly clamped but rather only rests loosely on a support. A thrust ring is provided at least at one of the smoothing gears for limiting axial movements of the component part, which occur during smoothing.

A reciprocating die roll forming machine for forming a pattern such as a thread form on the outer surface of a cylindrical blank includes at least one set of reciprocating dies operating upon the blank which rotates in place. The machine includes a slide and bearing combination to support the dies belt driven by a servo-motor controlled by a central processing unit. Mechanism is provided to deliver and position a blank for engagement by the dies. In one form, the machine includes multiple die sets to produce multiple parts during one die reciprocation cycle. In another form, the machine employs separate drive mechanisms to independently drive each die of a set.

A method for producing an internally and/or externally toothed pot-shaped sheet metal part having teeth extending toward the pot center axis, wherein an un-toothed pot-shaped sheet metal part is inserted into a die and then, by means of a relative movement between the sheet metal part and associated profile rollers, a profile is rolled onto the pot-shaped sheet metal part by the profile rollers applied to the sheet metal part and thus alternating internal and external gear teeth are applied to the sheet metal part, wherein the profile rollers form the sheet metal part oriented radially from the inside toward the outside, in that the profile rollers roll along the inner circumference of the sheet metal part.