The invention relates to a method for creating or machining gears on workpieces (W1, W2), in which a rolling first machining engagement between a machining tool (WF; WS) that is driven about its rotation axis (B) and a first workpiece that is rotatable about the rotation axis (C1) of a first workpiece-side spindle (11) is realized at a first location on a gear-cutting machine (100; 200) by means of a tool-side spindle drive motor (22), and in which a second machining engagement is realized at a second workpiece, different from the first workpiece, that is rotatable about the rotation axis of a second workpiece-side spindle (12) that is different from the first workpiece-side spindle, wherein the machining tool can execute, relative to the first workpiece-side spindle, a movement, serving as an axial infeed movement in the first machining engagement, along a tool-side machine axis (Z) that has a direction component in the direction of the first workpiece-side spindle axis and in particular extends parallel thereto, wherein, after the first machining engagement, a tool-side positioning movement that takes place along this tool-side machine axis and allows the second machining engagement is carried out, wherein the second machining engagement is a machining engagement that is identical to the first machining engagement in terms of type of machining, is effected using the same tool-side spindle drive motor as in the first machining, and is carried out in the gear-cutting machine at a second point that is different from the first point.

Method for finishing hardened gears comprising: a first dry removal step of a first stock amount by means of a first cutting tool with defined cutting edges; and a second dry removal step of a second stock amount by means of a second cutting tool with non defined cutting edges.

The invention relates to a method for producing and deburring toothings on work pieces (6), comprising two workpiece spindles (3, 3), comprising a hobbing tool (12) and comprising a deburring device (10), wherein the workpieces (6) are automatically clamped into the workpiece spindles (3, 3), wherein the workpieces (6) are toothed with the hobbing tool (12) and then deburred, comprising the following method steps: a. receiving an unmachined workpiece (6) in a first loading position (19) via a first workpiece spindle (3) and transporting the workpiece (6) to the hobbing tool (12); b. carrying out a mill cut; c. placing down the workpiece (6) in the first loading position (19) and receiving a further unmachined workpiece (6); d. transporting the workpiece (6) machined with the mill cut to the second loading position (19); e. receiving the workpiece (6) in the second loading position (19) via the second workpiece spindle (3) and transporting the workpiece (6) to the deburring tool (10); f. deburring of the workpiece (6), wherein an intermediate storage (14) for at least one workpiece (6) is provided between the first loading position (19) and the second loading position (19), wherein the workpiece (6) is moved from the intermediate storage (14) into the loading position (19), and wherein the method steps e. and f. are carried out in the same time interval in which the method step b. also takes place.

The invention concerns a method for the chip-removing generation or machining of gear teeth on a workpiece which is driven in rotary movement about its rotary axis at very high rates of rotation, with a toothed tool that is driven in rotary movement about its rotary axis, wherein the tool and the workpiece are brought into a rolling tooth engagement in the manner of a helical gear transmission with their axes of rotation crossing each other at an angle different from zero, and wherein a further operation is performed on the workpiece and/or on its gear teeth during the time of operating engagement between the teeth of the tool and of the workpiece.

The present disclosure relates to a method and to an apparatus for chamfering and deburring gear cut workpieces, especially of large-volume gear cut workpieces, using a deburring apparatus which is arranged on or at the cutting head of a gear cutting machine and which at least partially utilizes the machine axes of the gear cutting machine to chamfer and to deburr gear teeth along a tooth contour.

To provide a gear machining device and a gear machining method which achieve machining of tooth flanks having different torsion angles with high degree of accuracy. In a gear machining device, a side surface of a tooth of a gear includes a first tooth flank and a second tooth flank having a different torsion angle from the first tooth flank, a cutting blade of a machining tool has a blade traces having a torsion angle determined based on a torsion angle of the second tooth flank and an intersection angle between a rotation axis of a workpiece and a rotation axis of the machining tool so as to allow the second tooth flank to be machined on the pre-machined first tooth flank.

A machine for machining a workpiece having a first central longitudinal axis passing through a workpiece plane that is disposed orthogonally relative to the first central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle having a body, a wheel supporting an abrasive and an insulator electrically isolating the wheel from the body, the wheel being operable to remove material from the workpiece, the grinding spindle having a second central longitudinal axis about which the grinding spindle rotates, the second central longitudinal axis of the grinding spindle passing through the workpiece in the workpiece plane so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.

A machine for machining a workpiece having a first central longitudinal axis passing through a workpiece plane that is disposed orthogonally relative to the first central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle having a body, a wheel supporting an abrasive and an insulator electrically isolating the wheel from the body, the wheel being operable to remove material from the workpiece, the grinding spindle having a second central longitudinal axis about which the grinding spindle rotates, the second central longitudinal axis of the grinding spindle passing through the workpiece in the workpiece plane so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.

A method for machining toothed and hardened work wheels, includes: mounting a work wheel that is hardened and pre-toothed with an allowance onto a workpiece spindle; removing at least 50% of the allowance by means of gear skiving with a skiving wheel that is rotatably driven by a tool spindle; precision-machining the work wheel in unchanged tension by means of a honing wheel. The forward movement occurs during gear skiving in the extension direction of the toothing. The delivery of the workpiece that is moved in an oscillating manner in the extension direction of the toothing occurs during honing in the radial direction. The skiving wheel and the honing wheel are driven by a common tool spindle. A device for carrying out the method includes a workpiece spindle, which is driven to rotate, and a tool spindle, which carries a combination tool having a skiving wheel and a honing wheel.

Methods and apparatuses enabling/improving retractability of a first bevel gear that with at least one second bevel gear forms a transmission, performing: a retractability analysis including: ascertainment whether during the installation in a housing the first gear can be engaged by an axial insertion movement with the second gear and/or the first gear can be separated from the engagement with the second gear by an axial retraction movement, and if a collision results during the engagement or separation between teeth of the gears ascertainment of a flank modification of the teeth of the first and/or second gears to avoid the collision, ascertainment of second machine data of based on this modification, and finish machining in a bevel gear cutting machine to perform the flank modification according to the second machine data on the teeth of the respective gears.