SPINDLE SPEED CONTROLLING DEVICE FOR RING SPINNING AND TWISTING MACHINES

摘要

Spindle speed controlling device characterized in that voltages generated at the soft start circuit, the base speed change set circuit to give programmed changes to spindle speed, the speed feedback circuit which maintains the spindle speed at each stage and the chase speed change circuit to give the desired speed changes between the length of chase in synchronization with rising and falling of the ring rails, are combined together. This combined voltage is put as the instructing signal in the revolution controlling part lying between the power source and the electric motor so as to effect the program control of spindle speeds and the speed control which synchronizes with rising and falling of the ring rail at the same time on the ring spinning machine and twisting machine.