A method for grinding a toothing of a workpiece with a grinding tool in a grinding machine, wherein during the engagement of the grinding tool in the toothing to be ground, a first and a second machine parameter are measured, and both machine parameters measured are compared with a predefined stored value, wherein a signal is output if at least one of the machine parameters exceeds or falls below the predefined stored value, taking account of a tolerance range. To enable a conclusion to be drawn about the course of the grinding process by monitoring relevant variables, at least one of the machine parameters contains periodic signal components, wherein the signal components are broken down by a frequency analysis into the individual frequency components and the frequency components are used, with regard to their frequency and/or amplitude, for comparison.

A multi-axis system (30) for positioning a workpiece measuring sensor (54) on a metrology machine. Preferably, each sensor is positionable via a system comprising movement along and/or about at least linear directions/axes (X, Z, A, B) so as to control linear and/or rotational movement of a sensor automatically to a predetermined position without operator intervention. The multi-axis positioning system allows faster setup times when a workpiece or tooling on a machine is changed.

A multi-axis system (30) for positioning a workpiece measuring sensor (54) on a metrology machine. Preferably, each sensor is positionable via a system comprising movement along and/or about at least linear directions/axes (X, Z, A, B) so as to control linear and/or rotational movement of a sensor automatically to a predetermined position without operator intervention. The multi-axis positioning system allows faster setup times when a workpiece or tooling on a machine is changed.

Tool electrodes for and methods of electrical discharge machining are provided. In one exemplary aspect, a tool electrode for machining features into a workpiece is provided that allows for increased machining speed without sacrificing the quality of the machined features. Moreover, a tool electrode is provided that eliminates or reduces the high cost associated with customized tool electrodes. In particular, a tool electrode is provided that includes a plurality of electrode elements arranged and spaced apart in a digitized matrix representative of a tooling shape for machining features into a workpiece. The plurality of electrode elements are spaced apart from one another and arranged in the digitized matrix by digitizing an analog electrode tool configured to machine the feature into the workpiece or a volume of the feature to be machined into the workpiece.

The invention relates to a method for measuring a tool (1) for roll machining toothed workpieces, wherein a virtual contact points is calculator on a rounded virtual blade of a virtual tool. The relative orientation between the tool axis (B) and the measuring device (11) as well as a translational relative position between the tool and the measuring device are then calculated and adjusted on the basis of the calculated virtual contact point. The measurement is taken on the real blade in the adjusted relative orientation and relative position, and the measurement can be taken in particular using a cylindrical scanning means in the form of a laser beam, wherein the cylindrical scanning means tangentially contacts the virtual blade in the virtual contact point.

The present disclosure relates to a method for gear skiving a workpiece, wherein: in a first step, the geometry of a tool, in particular of a skiving wheel, is measured for the machining of the workpiece in a state clamped in an apparatus for gear skiving machining; and in a subsequent further step, machining kinematics are determined for the gear skiving in dependence on the measured geometry of the tool characterized in that the absolute location of a cutting edge of the tool in the apparatus is determined in the first step.

A gear machining apparatus creates a gear on a workpiece W by moving a gear cutting tool relatively with respect to the workpiece along the direction of the rotation axis of the workpiece W while synchronously rotating the gear cutting tool and the workpiece. One of a workpiece rotation speed controlling portion and a tool rotation speed controlling portion varies the rotation speed of one of the workpiece and the gear cutting tool and the other one of the workpiece rotation speed controlling portion and the tool rotation speed controlling portion synchronizes the rotation speed of the other one of the workpiece and the gear cutting tool with one of the rotation speed of the workpiece and the gear cutting tool.

A method for producing gears, wherein in a first step a set of teeth is formed by means of a skiving wheel rotationally driven by a tool spindle in a workpiece gear rotationally driven synchronously thereto by a workpiece spindle, wherein the workpiece spindle and the tool spindle are at an axis intersection angle to each other and the advancement occurs in the tooth-flank extension direction, and wherein in a second step at least some teeth of the set of teeth are machined by means of a tooth-machining tool. A combined tool is used, in the case of which the toothmachining tool and the skiving wheel are fixedly connected to each other. Between the two steps, the combined tool remains connected to the tool spindle and the workpiece gear remains connected to the workpiece spindle. Between the two steps, merely the relative position of the tool spindle in relation to the workpiece spindle and the rotational speed ratio of the two spindles are changed.

A gear machining support device supports machining when a tooth of a gear is machined on a workpiece by relatively moving the workpiece and a machining tool while synchronizing rotations of the workpiece and the machining tool around respective center axis lines thereof. The gear machining support device includes: a target modification amount storage unit configured to store target modification amounts of at least two of modification elements of a tooth surface shape of the tooth of the gear, the modification elements including crowning, bias, a helix angle, a pressure angle, and a tooth profile roundness; and a correction amount determination unit configured to determine a correction amount of a machining control element during a machining operation such that the at least two of modification elements approximate the respective target modification amounts stored in the target modification amount storage unit.

The invention relates to a method for measuring a tool (1) for roll machining toothed workpieces, wherein a virtual contact points is calculator on a rounded virtual blade of a virtual tool. The relative orientation between the tool axis (B) and the measuring device (11) as well as a translational relative position between the tool and the measuring device are then calculated and adjusted on the basis of the calculated virtual contact point. The measurement is taken on the real blade in the adjusted relative orientation and relative position, and the measurement can be taken in particular using a cylindrical scanning means in the form of a laser beam, wherein the cylindrical scanning means tangentially contacts the virtual blade in the virtual contact point.