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 grinding machine for gear grinding, having a tool spindle for holding a gear machining tool, having a workpiece spindle for holding a workpiece to be toothed, having controlled machine axes for executing relative movements for chip-removing machining of the workpiece to be toothed by the gear machining tool, having a device for applying a cooling fluid, which is set up to introduce cooling fluid into a region of the chip removal between the gear machining tool and the workpiece to be toothed during the chip-removing machining operation, wherein at least one insulation device is provided in order to protect a load-bearing structure and/or a component of the grinding machine from a fluid flow and/or sparking.

A grinding machine for gear grinding, having a tool spindle for holding a gear machining tool, having a workpiece spindle for holding a workpiece to be toothed, having controlled machine axes for executing relative movements for chip-removing machining of the workpiece to be toothed by the gear machining tool, having a device for applying a cooling fluid, which is set up to introduce cooling fluid into a region of the chip removal between the gear machining tool and the workpiece to be toothed during the chip-removing machining operation, wherein at least one insulation device is provided in order to protect a load-bearing structure and/or a component of the grinding machine from a fluid flow and/or sparking.

A machine for machining a workpiece having a central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle to remove material from the workpiece, the grinding spindle having a central longitudinal axis about which the grinding spindle rotates and being disposed with the central longitudinal axes intersecting one another 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 central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle to remove material from the workpiece, the grinding spindle having a central longitudinal axis about which the grinding spindle rotates and being disposed with the central longitudinal axes intersecting one another 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 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 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.

A method for clamping a tool on a tool spindle in a hard finishing machine that includes: the tool spindle connected to a drive motor, with a cylindrical receiving seat and a thread, and the tool. The receiving seat is limited at one axial position of the tool spindle by a abutment flange for axial abutment of the tool. A clamping nut can be screwed onto the thread and is designed for axial abutment on the tool. The clamping nut is temporarily held in a rotationally fixed manner when the tool spindle is rotated by the drive motor. The method includes: placing the tool on the receiving seat and screwing the clamping nut onto the thread; blocking the clamping nut against rotation during the rotation of the tool spindle with the drive motor; and actuating the drive motor to tighten the clamping nut so it presses axially against the tool.

A method of producing a tooth profile surface on a workpiece. The method comprises providing a gear cutting tool and rotating the gear cutting tool about an axis of rotation. The cutting tool and workpiece are engaged with one another and rolled together in accordance with a generating roll to generate a profile surface of a tooth. The generating roll comprises a first ratio-of roll and a second ratio-of-roll with the first and second ratios-of-roll being different from one another and with one of the first ratio-of-roll and the second ratio-of-roll resulting in a relief section being formed on the tooth profile surface.