Control Systems

3D Model

All CNC machines use a control system to guide the tool as it moves from one position to the next. In a continuous path system, the tool cuts the workpiece during movement. Continuous path systems are necessary to contour curved paths, circles, cones, and other shapes that require more than one axis of movement. With a point-to-point positioning (PTP) system, the machine guides the cutting tool from one predetermined location to the next. Cutting only takes place at each end position. No cutting takes place during the move. For drilling, the machine would move to a position, drill a hole, move to a new position, drill a new hole, and repeat until the operation is complete. Continuous path systems are more expensive than PTP systems, but they can perform a greater number of operations. The most common types of continuous path CNC machines include the machining center and the turning center. Almost every modern machining or turning center is equipped with a continuous path system.