Method and system for predicting collision of machining path

A system for predicting collision of a machining path, applicable to a machine tool including a controller, the controller including a processing unit, the system for predicting collision of a machining path comprising:

• a calculation unit for receiving a plurality of block information in an NC program translated by the controller, wherein:
• prior to perform interpolation upon each of the plurality of block information, the calculation unit calculates a safety distance of a next block information with respect to a block information to be interpolated, the safety distance is obtained by calculating a system response time and a stop distance with respect to the each of the plurality of block information, the calculation unit searched a number of individual block information having an accumulated distance greater than or equal to the safety distance, and the accumulated distance is obtained by orderly calculating and accumulating the stop distances with respect the individual block information;
• and
• a collision-detecting unit, connected with the calculation unit, performing an anti-collision detection upon each of the individual block information contributing the accumulated distance.