(1) The tool magazine of Guangdong machining factory is controlled as the positioning axis of the system. In the ladder diagram, according to the T code of the command, the angle and speed command are output to the tool magazine servo motor. The capacity, rotation speed and acceleration / deceleration time of the tool magazine can be set in the system parameters. This method is not affected by external factors. The positioning is accurate and reliable, but the cost is high.
(2) The tool magazine of Guangdong machining factory is driven by hydraulic motor, which can be divided into fast / slow speed. It is counted and positioned by proximity switch. In the ladder diagram, the current tool number (tool on spindle) and target tool number (preselected tool) stored in the system are compared and calculated, then the rotation command is output, and the shortest path rotation is judged at the same time. This method needs enough hydraulic power and solenoid valve, and the tool magazine rotation speed can be adjusted by throttle valve. But after using for a period of time, it may affect the speed and accuracy because of the changes of oil quality, oil pressure, oil temperature and environmental factors. Generally used for large and medium-sized machine tools without frequent tool change.
(3) The cutter magazine of Guangdong Machinery processing factory is driven by AC asynchronous motor cam mechanism (Mahalanobis mechanism) and counted by proximity switch. In this way, the operation is stable and the positioning is accurate and reliable. Generally, it is used with cam manipulator, with fast tool changing speed and accurate positioning.