A parallel axis gear configuration constructed in accordance to one example of the present disclosure can include a first gear having a first gear tooth that includes a lead crowning across a face width thereof. The lead crowning can include (i) a first lead crown defined from a centerline to a transition point and (ii) a second lead crown defined from the transition point to a first end point. The lead crowning can include a drop-off magnitude that is greater at the second lead crown than the first lead crown.

An aluminum component and a method for manufacturing the aluminum component has a forming step and a cutting step. Projections (f) extend in an axial direction and are continuously arranged in a circumferential direction. End portions of the projections (f) are cut along a processing line having a predetermined processing diameter (D) providing splines (S) of predetermined dimensions. Side surfaces (fa) are inclined to be tapered in a direction from a base end to a projecting end. A portion of each side surface (fa) adjacent to the projecting end is an inclined surface (fb) with an inclination angle less than an inclination angle of a portion of the side surface that is adjacent to the base end.

A method of producing a workpiece having a modified gearing geometry by a generating method includes generating machining the workpiece in at least one machining stroke with a tool having a modified gearing geometry and a topological modification. Provision is made that the contact path with the workpiece is not shifted on the tool during the machining stroke. In one example, a cylindrical workpiece is machined by an axial generating method. In another example, a conical workpiece is machined by a diagonal generating method, and the diagonal ratio is selected such that the contact path does not shift on the tool during the machining stroke.

A method for machining the tooth flanks of a bevel gear workpiece includes carrying out correction machining of a concave tooth flank and a convex tooth flank of at least one tooth gap by, after machining using a first machine setting, cutting free of the concave tooth flank by the bevel gear workpiece executing a workpiece rotation in a first rotational direction having a predefined first absolute value in relation to a gear-cutting tool and/or cutting free the convex flank by the bevel gear workpiece executing a workpiece rotation in another rotational direction having a predefined second absolute value in relation to the gear-cutting tool, and finish machining the concave tooth flank using a second machine setting, which differs from the first machine setting, and finish machining the convex tooth flank using a third machine setting, which differs from the second machine setting.

A process for improving the excitation behavior of a ground bevel gear set by altering the surface structure of a gear set member from tooth slot to tooth slot (Teeth 1-3). The method comprises shifting the roll-positions in a way that not every facet or flat (F) is positioned the same way on each flank (2) and/or changing the distances of the roll angle along a tooth slot (delta RPj) whereby flats are spaced unequally (i.e. varying widths) along the tooth. One or more additional processes for altering the surface structure may be included.

A method for deburring bevel gears using a deburring tool, which comprises at least one cutting edge, having the following steps: rotationally driving the deburring tool around a deburring spindle axis, rotationally driving a bevel gear around a workpiece spindle axis, wherein the rotational driving of the deburring tool and the rotational driving of the bevel gear take place in a coupled manner with an inverse coupling transmission ratio, it is a continuous method for deburring, in which the cutting edge executes a relative flight movement in relation to the bevel gear, the relative flight movement is defined by a hypocycloid, and wherein a burr is removed at least on one tooth edge of a tooth gap in the region of the bevel gear toe and/or the bevel gear heel by a cutting contact of the cutting edge with the tooth edge.

In a method of producing a toothed workpiece having a modified surface geometry by a diagonal generating method by means of a modified tool, a tool may be used whose surface geometry comprises a modification which can be described at least approximately in the generating pattern at least locally in a first direction of the tool by a linear and/or quadratic function, with the specific modification of the tool producing a corresponding modification on the surface of the workpiece by the diagonal generating method, with the modification of the workpiece produced by the specific modification of the tool having a profile modification and/or a modification caused by a change of the machine kinematics during the machining process of the workpiece superposed on it.

A combined gear cutting apparatus includes a workpiece drive portion, a first processing portion holding and moving a first tool to a processing position for a workpiece, a second processing portion holding and moving a second tool to a processing position for the workpiece, and a control portion which includes a storage portion storing workpiece information indicating a configuration of the workpiece before first processing is performed, first tool information, second tool information and relative position information. The control portion includes a tooth groove configuration calculation portion calculating tooth groove configuration information of the workpiece based on the first tool information, the workpiece information and the relative position information obtained when the first processing is completed. The second tool is configured to move to a start position of second processing for the workpiece based on the tooth groove configuration information, the second tool information and the relative position information.

A combined gear cutting apparatus includes a workpiece drive portion, a first processing portion holding and moving a first tool to a processing position for a workpiece, a second processing portion holding and moving a second tool to a processing position for the workpiece, and a control portion which includes a storage portion storing workpiece information indicating a configuration of the workpiece before first processing is performed, first tool information, second tool information and relative position information. The control portion includes a tooth groove configuration calculation portion calculating tooth groove configuration information of the workpiece based on the first tool information, the workpiece information and the relative position information obtained when the first processing is completed. The second tool is configured to move to a start position of second processing for the workpiece based on the tooth groove configuration information, the second tool information and the relative position information.

The present invention shows a process for gear manufacturing machining a workpiece by a tool on a gear manufacturing machine, wherein the workpiece is machined by a generating machining process in which the tool for gear manufacturing machining rolls off on the workpiece at a predefined center distance and axial cross angle, wherein the gear manufacturing machining preferably takes place on two flanks, with a desired tooth trace shape and/or tooth thickness of the gearing being generated by the generating machining process. The process is characterized in that an additional condition is predefinable and in that the center distance and the axial cross angle are determined in dependence on the desired tooth trace shape and/or tooth thickness of the gearing and on the additional condition.