AIP Intelligent Instrument Co., Ltd. is a high-tech enterprise focusing on the global motor test, providing intelligent test products such as motor stator test, motor test, cast aluminum rotor test, armature rotor test and dynamometer test for the global motor industry. As a R & D and manufacturer company of motor testing instruments, AIP has always paid attention to the development trend of various types of motor performance, kept pace with the development of the motor industry, and guaranteed the normal and efficient operation of the motor.

The theme of this article is: the performance advantages of linear stepping motor "Zero drive".

The most significant advantage of linear stepping motor in the use of machine tools is that it cancels all the mechanical intermediate transmission links between the motor and the workbench (carriage), and shortens the transmission chain length between machine tools to zero. Therefore, this kind of transmission method is called "linear drive" or "Zero drive" in the industry. This method of "Zero drive" of linear stepping motor has the function advantages and characteristics that the traditional motor does not have.

(1) High speed response

Generally speaking, the dynamic response time of mechanical transmission parts is several orders of magnitude larger than that of electrical components. Because some mechanical transmission parts such as lead screw with large response time constant are eliminated in the system, the dynamic response function of the whole closed-loop control system is greatly improved, and the response is abnormally sensitive and convenient.

(2) Higher accuracy

Because the mechanical transmission structure such as lead screw is cancelled, the pin tracking error caused by the lag of transmission system is reduced. Through the feedback control of the linear position detection, the positioning accuracy of the machine tool can be greatly improved.

(3) High transmission rigidity and stable thrust

"Direct drive" improves its transmission stiffness. At the same time, the layout of the linear motor can be arranged according to the shape structure of the guide rail of the machine tool and the stress state of the worktable when it moves. Generally, it is planned to be uniformly distributed and symmetrical, so that its movement thrust is stable.

(4) Fast speed, short acceleration and deceleration process

Line motor was first used for maglev train (speed up to 500km / h). Now it is used in machine tool feed drive. It is no problem to meet the maximum feed speed of ultra-high speed cutting (requirement up to 60-100m / min or higher). Because of the high-speed response of "Zero drive", the acceleration and deceleration process are greatly shortened, so that the high speed can be achieved at the moment of starting and the quasi stop can be achieved at the moment of high-speed operation. Generally, the acceleration can reach 2-10g (g = 9.8m / s2).

(5) Unlimited travel length

Through the fixed parts of the linear stepping motor in series on the guide rail, the travel length of the moving parts can be extended infinitely.

(6) Low noise during operation

Because the mechanical conflict of the transmission lead screw and other parts is eliminated, the rolling guide or magnetic pad suspension guide (without mechanical contact) can be selected as the guide pair, which greatly reduces the motion noise.

(7) High efficiency

Because there is no intermediate transmission link, the energy loss in mechanical conflict is eliminated. The performance advantage of "Zero drive" of linear stepping motor has a lot of practical application significance. Among its many performance advantages, the lower energy loss is its biggest highlight. With the deep promotion of energy saving and emission reduction, the trend of innovation driven environment-friendly in the motor industry is imperative. AIP Intelligent Instrument Co., Ltd. is willing to make progress and seek common development with the motor lovers!