On the market, there are different types of engraving machines, which includes CNC engraving machine, metal engraving machine, laser engraving machine, wood engraving machine, advertising engraving machine and stone engraving machine etc. And a good spindle motor can effectively ensure the production accuracy of engraving machine. And the electric spindle with large torque can provide strong power to complete the production of the engraving machine. So, a reliable spindle motor is so important to CNC engraving machine. Then how to choose the right spindle motor of engraving machine? If you want to buy a suitable spindle motor of engraving machine, first of all, you should know more about the product.
We know that the spindle motor is an important part for the computer engraving machine, and its performance has a vital impact on the performance of the computer engraving machine. Usually machining spindles are divided into two types. One is precision machining spindles and another is high-power cut-off spindles. Now let us get to know the characteristics of each type.
The fine processing spindle motor has the characteristics of low noise, high speed and height, which is suitable for processing particularly fine work pieces, such as nameplates, gifts, seals and badges etc. This type of motor is usually a high-speed variable frequency motor with a small power, and generally the power is below 250W. The disadvantage is that the ability to cut thick materials is poor, and it is not suitable for cutting thick materials.
Generally speaking, the high-power cutting spindle motor is mainly used for cutting and high-power engraving. It has the characteristics of high power and strong cutting ability, which is especially suitable for cutting space and three-dimensional characters. Of course, it can also be used to make breastplates, seals and nameplates and so on. This kind of high-power spindles can generally be divided into brushless high-speed AC motors and brushed AC motors according to the characteristics of the motor. The main differences are as followings.
1. The maximum speed of the brushed AC motor does not exceed 24000 rpm. But the brushless frequency conversion motor has a high speed, and the speed range is 700000 rpm.
2. The brushless variable frequency motor has high rotation accuracy, low wear and low noise, and the operating noise is much lower than that of the brushed AC motor.
3. The brushless variable frequency motor has good blocking characteristics, since there is a special current-limiting circuit on the inverter, which will not burn the motor after a short time of blocking, while the brushed AC machine will quickly smoke and burn when it is overloaded or blocked. And it cannot be repaired.
4. The brushed AC motor only has a lifespan of about 300 hours due to the use of electric power. Brushless inverter motor adopts frequency conversion control technology to adjust the speed. It is a professional-grade product with long life. Usually the manufacturer provides a free replacement of 1 year. Therefore, the motor can be maintained by replacing the high-speed bearing.
