Spindle function The spindle function is the function of specifying the spindle speed.
(1) The encoding method of the speed is generally specified by the S instruction code. Generally, it is indicated by two or four digits after the address symbol S, and the units are r/min and mm/min respectively.
(2) Specify constant linear speed This function can ensure that the end face quality of the workpiece and the machining of different diameters of the machining of the lathes and grinding machines have the same cutting speed.
(3) Spindle directional stop This function makes the spindle stop accurately at a certain position in the radial direction, and the machine tool with automatic tool change function must select a CNC device with this function.