CHANGZHOU SMILA AUTOMATION TECHNOLOGY CO., LTD

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Jackie Huang / Rachel lu

Tel:+8651985187226

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rachel@smila.com.cn

skype:lu_lucy9

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Company News

Selection of stepper motor

2014/07/18


 Stepper motor is one of key components of mechanical and electrical integration products, is often used as a positioning control and constant speed control. Characteristics of stepper motor low inertia, high positioning precision, no accumulation error, simple control. Widely used in electromechanical integration products, such as: CNC machine tools, packaging machinery, computer peripheral equipment, copiers, fax machines and other.

          Stepper motor is able to convert digital input pulse incremental rotary or linear motion electromagnetic actuator. Each input of a pulse motor shaft step a step angle increment. General Motors corner and back to the input pulse number is proportional to, the corresponding speed depends on the input pulse frequency.

          Stepper motor selection, first of all to ensure that the stepper motor output power than the power load. And in the selection of power step motor, should first load torque calculation of mechanical system, the torque-frequency characteristic motor can satisfy the mechanical load and some margin to ensure its reliable operation. In the actual work process, various frequency of load torque in the torque characteristic curves of frequency range. Generally speaking the maximum static torque Mjmax large motor, load torque.

          Stepper motor selection, should step angle and mechanical system matching, it can get the required pulse equivalent machine. In the mechanical transmission process in order to make it smaller pulse equivalent, one is lead can change the screw, two is through the stepper motor subdivision drive to complete. But the breakdown can change its resolution, does not change its accuracy. Precision is decided by the inherent characteristic of motor.

          Select a power step motor, should estimate the load starting frequency of inertia and machine tool mechanical load, and make the inertial frequency characteristics of stepping motor phase matching and some margin, so that the most high speed continuous frequency can satisfy the need of fast moving machine.