Matters needing attention in selection of stepping motor in Longgang, Guangdong province

by:V&T Technologies     2020-01-20
Guangdong Longgang stepping motor selection considerations, Guangdong Longgang stepping motor manufacturers are numerous, I want to buy stepping motors in Baoan, what should I pay attention? Guide for purchasing stepping motors to avoid pits. When buying a stepping motor in Longgang, Guangdong, you should pay attention to the following points: 1. When buying a stepping motor in Longgang, Guangdong, you should choose to keep the torque, which is also called static torque. It refers to when the stepping motor is energized but does not rotate, the stator locks the torque of the rotor. Since the torque of the stepping motor is close to the holding torque when running at low speed, the torque of the stepping motor decays rapidly with the increase of speed, and the output power also changes with the increase of speed, therefore, holding torque is one of the most important parameters to measure the load capacity of stepping motor. For example, it is generally mentioned 1N without explanation. M stepping motor can be understood as holding torque is 1N. M. Second, Guangdong Longgang buy stepping motor selection phase number two-phase stepping motor cost is low, step angle is at least 1. 8 degrees, large vibration at low speed, fast torque drop at high speed, suitable for high speed and low requirements for accuracy and stability; The step angle of the three-phase stepping motor is at least 1. 2 degrees, the vibration is smaller than that of the two-phase stepping motor, the low speed performance is better than that of the two-phase stepping motor, and the maximum speed is 30% to 50% higher than that of the two-phase stepping motor, it is suitable for occasions with high speed and high requirements for precision and stability; The step angle of the 5-phase stepping motor is smaller, and the low-speed performance is better than that of the 3-phase stepping motor, but the cost is high. It is suitable for occasions with medium and low speed and high requirements for accuracy and stability. Third, Guangdong Longgang to buy a stepping motor to choose a stepping motor, should follow the principle of selecting the motor first and then the driver, first clear the load characteristics, then by comparing the static torque and moment frequency curves of different types of stepping motors, the stepping motor that best matches the load characteristics is found; When the accuracy requirement is high, mechanical deceleration device should be adopted to make the motor work in the state with the highest efficiency and the lowest noise; Avoid making the motor work in the vibration zone. If necessary, solve it by changing voltage, current or increasing damping; In terms of power supply voltage, it is recommended that 57 motors adopt DC 24 V- 36 V, 86 motor adopts DC 46 V, 110 motor adopts 80V higher than DC; The motor with larger base number should be selected for large moment of inertia load; When the inertia load is large and the working speed is high, the motor should gradually increase the frequency and speed to prevent the motor from out of step, reduce noise and improve the positioning accuracy when stopping; In view of the stepping motor torque is generally below 40Nm, beyond this torque range, and the operating speed is greater than 1000 RPM, that is, should consider the choice of servo motor, the general AC servo motor can operate normally at 3000 RPM, DC servo motor cocoa operates normally at 10000 RPM. Four, Guangdong Longgang to buy stepping motor to choose the driver and subdivision, it is best not to choose the whole step state, because the vibration is large in the whole step state; Try to choose a driver with small current, large inductance and low voltage; Equipped with drives larger than the working current, equipped with subdivision drives when low vibration or high precision is needed, and equipped with high voltage drives for high torque motors to obtain good high-speed performance; In the occasion where the actual rotating speed of the motor is usually high and the requirements for accuracy and stability are not high, it is not necessary to select a high-subdivision driver in order to save cost; Under the condition that the actual rotating speed of the motor is usually very low, a larger fraction should be selected to ensure smooth operation and reduce vibration and noise; In short, when selecting the subdivision, the actual running speed, load torque range, reducer setting, precision requirements, vibration and noise requirements of the motor should be comprehensively considered. TAG Longgang stepping motor
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