The basic knowledge of engraving machine stepper motor

1. What kinds of stepper motor points?

Stepping motor in three kinds: permanent magnet (PM), reactive (VR) and hybrid (HB)

Permanent magnet stepping, generally for two phase, torque and volume is small, step Angle is 7.5 or 15 degrees commonly;

Reactive step for three-phase commonly, can achieve high torque output, stepper Angle of 1.5 degrees commonly, but the noise and vibration are very big. In the 80 s in Europe and the United States and other developed countries have been eliminated;

Hybrid stepping is a mixture of permanent magnet and the advantages of reactive. It is divided into two and five phase: two phase stepper Angle of 1.8 degrees commonly and five phase stepping Angle of 0.72 degrees.

The application of the stepper motor is more widely.

2. What is HOLDING TORQUE (HOLDING TORQUE)?

HOLDING TORQUE (HOLDING TORQUE) refers to the stepper motor power but no turns, locked rotor TORQUE of the stator. It is one of the most important parameters of step motor, usually

Stepper motor at low speed torque close to holding torque. As a result of the stepper motor output torque along with the increase of speed and continuous attenuation, the output power also along with the increase of speed change,

So keep the torque has become a measure of stepper motor is one of the most important parameters. For example, when people say 2 n. m of stepper motor, in the absence of special instructions refers to keep

Torque is 2 n. M of stepper motor.

3. What is the DETENT TORQUE?

DETENT TORQUE is refers to the stepper motor under the condition of no electricity, locked rotor TORQUE of the stator.

DETENT TORQUE at home there is no uniform way of translation, to make you misunderstanding; As a result of the reactive stepping motor rotor is not a permanent magnetic material, so it didn't

Have a DETENT TORQUE.

4. How much precision stepper motor for? Cumulative?

General precision of the stepper motor step Angle of 3-5%, and do not accumulate.

5. The appearance of stepper motor temperature allowed?

Stepper motor temperature will make the first motor demagnetization of magnetic materials, which can lead to torque decline and even out of step, so the motor appearance allows the highest temperature should depend on the different electricity

The points of demagnetization machine magnetic material; Demagnetization of magnetic materials, in general, some are above 130 degrees Celsius, some even as high as 200 degrees Celsius above, so the stepper motor external temperature

In 80-90 degrees Celsius perfectly normal.