Abstract: A method for preventing the collision of an obstacle and a part movable along at least two axes, which axes each have a feeder drive, includes the steps of a minimum stopping distance being determined repeatedly at predetermined time intervals from the relative location and speed data of the moving part as a function of the machine and part data required for this purpose and taking the minimum stopping distance as the basis for the collision calculation. The collision calculation is based on at least one component, from the components of the stopping distance that are related to the individual axes, which component is determined from the speed data retrieved in the individual time intervals and varied by a maximum acceleration of the associated feeder drive at least during the retrieval time interval.

Abstract: Disclosed is a method for preventing the collision of a part (1) movable along at least two shafts (x, y) relative to an obstacle (3), which shafts (x, y) each have a feeder drive, a minimum stopping distance (2) being determined repeatedly at predetermined time intervals (t1 to t2, etc.) from the relative location and speed data (x(t), y(t) or vx(t), vt(t)) of the moving part (1) as a function of the machine and part data required for this purpose and being taken as the basis for the collision calculation. In order to provide advantageous conditions for the method, it is proposed that the collision calculation be based on at least one component, from the components of the stopping distance (2) that are related to the individual shafts (x, y), which component is determined from the speed data (vx(t) or vy(t)) retrieved in the individual time intervals (t1 to t2, etc.) and varied by a maximum acceleration of the associated feeder drive at least during the retrieval time interval (t1 to t2, etc.).