| 摘要 |
PURPOSE:To position the turret, etc. of a machine tool at a desired stop point through the closest route by previously inputted position data and speed data into a position-speed data conversion circuit and taking the input for desired positioning. CONSTITUTION:An absolute encoder 1 certainly outputs 1-bit output signal every time when the revolution shaft revolves by one turn. Therefore, the output signal is input as N-bit signal which indicates the revolution position of a turret or a drum into a position-speed data conversion circuit 5 in the next stage by a processing circuit 4. Said circuit 5 receives the output signal of the processing circuit 4 and performs the comparison with the positioning input signal separately set by a setting device 6, and further treats the speed data corresponding to the result, and further outputs a digital signal. Onto the output side of the position-speed conversion circuit 5, a digital-analogue converter 7 is connected, and an M-bit data is converted to an analogue signal, which is added into a driver circuit 3. |
