The Index Drives is an epoch-making product that can be used in the most automated and semi-automatic devices, allowing users to produce more efficiently and reduce labor waste, as well as higher speeds and higher positioning accuracy but that was 30 years ago. With the rapid evolution of science and technology, there are many tools to replace the index drives with electrically controlled motor as the center, but at present the market only storage of electrically controlled motor prices are still higher than the indexing drives several times, such as Servo Motor, DD motor.