Abstract: The invention relates to a grinding machine for sharpening (honing) blades (4) of knives, scissors, hand tools or the like, with a magazine, a feed station (1) or similar, and with a honing station (2) for the blades (4), which has two contra-rotating grinding wheels (6a, 6b). In order to automate a method to be performed using the said machine whilst maintaining a high degree of machining accuracy, it is proposed to use a robot (3) with memory-programmable control having a manipulator (5) moveable in at least four of the six possible translatory and rotational degrees of spatial freedom, a gripper head, which has a holding device for accommodating and moving a blade (4), being fixed to the manipulator (5).

Abstract: Numerically controlled surface processing wherein contour coordinates of a workpiece clamped in a clamping device are determined in a number of default positions by a sensor, and the coordinates are imaged point by point. Through interpolation of these coordinates, at least one continuous function for the contour profile of one coordinate is determined in one spatial direction from at least one other coordinate in a second spatial direction.