A method for the production of a workpiece having a corrected gear tooth geometry and/or a modified surface structure by a diagonal generating method by a modified tool, wherein a modification of the surface geometry of the tool is produced in that the position of the tool dresser is varied during dressing in dependence on the angle of rotation of the tool and/or on the tool width position and/or wherein a modification of the surface geometry is produced which has a constant value at least locally in the generating pattern in a first direction of the tool and is given by a function in a second direction of the tool which extends perpendicular to the first direction, wherein the modification of the tool produces a corresponding modification on the surface of the workpiece, and wherein the modification on the surface of the workpiece is a directed crowning without shape deviations.

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.

The present disclosure relates to a method for the gear manufacturing machining of a workpiece by a diagonal-generating method, in which the workpiece is subjected to gear tooth machining by the rolling off of a tool, wherein an axial feed of the tool takes place during the machining with a diagonal ratio given by the ratio between the axial feed of the tool and the axial feed of the workpiece. According to the present disclosure, the diagonal ratio is changed within the course of the machining of a workpiece.

A grinding machine for grinding of a profile, comprising a machine bed, wherein a machining device is arranged on the machine bed, wherein the machining device comprises a swivel head which carries a first grinding spindle with a first grinding tool, especially with a roughing grinding tool, and a second grinding spindle with a second grinding tool, especially with a finishing grinding tool, wherein a workpiece carrier being a rotary table is arranged on the machine bed. To allow the production of workpieces with a complex geometry in a high precision in an economical manner the invention proposes that the swivel head further carries at least one third grinding spindle with a third grinding tool, wherein the swivel axle of the swivel head is directed horizontally and the axis of rotation of the rotary table is directed vertically.

Method for profiling a finishing tool, in particular a grinding worm, having a first and a second finishing flank; the method providing the steps of: arranging a cutting portion of a profiling tool in contact with the first flank of the thread; causing the cutting portion to slide in contact with the first flank of the thread so as to profile it; removing the cutting portion from the thread; automatically rotating the profiling tool so as to arrange the cutting portion in contact with a second flank of the thread; and causing the cutting portion to slide in contact with the second flank of the thread so as to profile it.

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 machine tool comprises a first component, for example a dressing spindle (3), and at least one second component, for example a dressing wheel (1), which is removably and/or movably arranged on the first component. The first component has a first antenna coil for a wireless signal transmission, and the second component has a second antenna coil. The two components together delimit a cavity which is completely surrounded by metal. The first antenna coil and the second antenna coil are arranged together in the cavity. This forms a metal-protected radio link (26.1) between the first antenna coil and the second antenna coil, which radio link is protected from harmful external influences.

A method of grinding the tooth slots of a workpiece with a freshly dressed grinding wheel wherein dual-machining of tooth slots is eliminated. The method comprises grinding the first few slots of a gear at a corrected depth amount which accounts for the rapid wear and other conditions of the freshly dressed grinding wheel wherein for a first number of tooth slots (e.g. 1, 2, 3 or more), the grinding wheel is fed-in relative to the workpiece by the corrected depth amount.

A device for loading and unloading a machine tool for machining gears, in particular a hard fine machining machine, with a workpiece includes: a base, a carrier arranged on the base and which is rotatable with respect to the base about a first axis of rotation, a gripping device arranged on the carrier for gripping and releasing the workpiece, wherein the gripping device has at least two gripper arms which are each pivotable independently of one another about a second axis of rotation, and the gripper arms are pivotable relative to one another about the second axis of rotation in such a way that the gripper arms can assume relative to one another a gripping position for gripping the workpiece and a release position for releasing the workpiece, and the gripper arms are pivotable about the second axis of rotation synchronously with one another at least in the gripping position.

Methods for machining may include: (a) providing a bevel gear on a workpiece spindle of a machine, the gear having a tooth having a head, (b) rotationally driving the gear about an axis of the spindle, (c) providing a first machining tool on a tool spindle of the machine, (d) machining the gear by means of the first machining tool, (e) providing a grinding tool as a second machining tool on the tool spindle or on a further spindle, (f) driving the grinding tool to rotate about a tool axis of the tool spindle, wherein the grinding tool comprises a concave machining region that has a ring shape and is arranged concentrically in relation to the tool axis, and (g) advancing the grinding tool in relation to the gear to bring the machining region into chip-removing operational connection with an edge in a region of the head to produce a chamfer on the edge by grinding.