Patent ID: 8221194

Claim:
A method of grinding a bar-shaped workpiece which has a non-circular cross-section formed by flat and/or curved lines and flat faces which are parallel to each other, the method comprising: clamping the bar-shaped workpiece on longitudinal sides thereof in a first clamping position; simultaneously finishing two end faces of the bar-shaped workpiece by employing double-disk face grinding; transferring the clamped bar-shaped workpiece between two clamping jaws coaxially disposed at a distance from each other and clamping at the end faces thereof by the clamping jaws in a second clamping position; releasing the first clamping position on the longitudinal sides; rotating the clamping jaws in a synchronously controlled manner; rough grinding the longitudinal sides of the bar-shaped workpiece and finishing by employing CNC-controlled peripheral grinding based on CX interpolation principles, wherein the C-axis is formed by a common rotational and drive axis of the two clamping jaws and the X-axis extends perpendicular to the C-axis; moving apart the clamping jaws in order to release the second clamping position; and transferring the bar-shaped workpiece to an unloading device.