Brushless Motor with High speed usually refers to high-speed motor speed over 10000 r/min motor. They have the following advantages: First, as high speed, so the electrical power density, and volume is much smaller than normal motor power, can effectively save material. The second is connected with the original motivation for the abolition of the traditional gear box, transmission, high efficiency, low noise. Third, because high-speed motor moment of inertia is small, so fast dynamic response.
High-speed machining technology attract more and more attention, not only get greater productivity, but also to obtain a high processing quality, and reduce production costs, brushless hub motor is considered the 21st century’s most promising advanced manufacturing technology one. In the advanced industrial countries, this technology has been widely used in aviation, aerospace and mold industry. In the past five years, the technology in China has made considerable progress. Is a prerequisite for high-speed cutting, high-speed machine is the machine trends. High-speed machine tools and virtual axis machine tools are a major breakthrough change.
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Brushless Motor with High Speed
Maintenance for Brushless Motor
The brushless motor was nearly put into operation, the factory has been injected into the GB/T5903 in the L-CKC100 ~ L-CKC220 in extreme pressure industrial gear oil in the 200 to 300 hours after the operation, should be first
First oil change in the future use of the quality of the oil should be checked regularly for deterioration of the oil mixed with impurities or be replaced.
In general, for long continuous work from the reducer, according to 5000 hours or once a year to run the new oil replacement, long-term out of brushless hub motor, re-operation should be replaced before.
Gear oil should be added to the same oil with the original grade shall not be mixed with different grades of oil used, the same as the viscosity of different grades of oil allowed to mix.
Oil should wait for the gear to cool down without risk of burning up, but should remain warm, because the completely cooled, oil viscosity, oil discharge difficult.
High Quality Brushless Hub Motor Free of Maintenance
Motor control from the simplest and off, starting, stopping, to clamp phase, transformer, inverter, vector, torque control, motor repair tool detail is nothing more than to make the brushless hub motor more accurate positioning, more stable speed and torque changes in more detail.
Maintenance of common motor control AC induction motors method has the following two kinds:
a. a test voltage control method: change the stator coil voltage, you can change the speed. For example, household fans, the use of switch to change the fan speed. Servo motor
b. Frequency control method: the mains frequency is 60Hz, if you use a micro controller or digital signal processor, operating rectifier component, the power switch into a different frequency, which can change the AC motor speed.
Stepper motor AC induction motor inverter, transformer control, the advantage is small, lightweight, low price, But the problem is the low efficiency of energy conversion easy to heat, electromagnetic interference noise is easy to produce strong, high noise and vibration.
To solve the above problems, academia and industry are actively involved in the DC motor, brushless DC motor to overcome. DC motor has good stability, speed should be, its input and output is almost linear between the characteristics, so that it can have a good control performance, it is widely used in high-precision control applications. However, because the brush and commutator DC motor is a mechanical friction contact with, easy to wear, sparks and electrical noise, resulting in lower reliability. Brushless motor is the DC brush electronic circuit in lieu of, and retains the advantages of DC motor, quick starts and stops; speed proportional to the voltage; turn moment proportional to the current advantages for high-accuracy, high stability and high speed applications. The disadvantage is limited by a permanent magnet material and size, big horsepower output system, the relative increase in difficulty.