The spindle motor is essential to the engraving machine and is an important component of the machine. The performance of the spindle directly affects the performance of the engraving machine.
Machining spindles are generally divided into two categories: precision machining spindles and high-power cut-off spindles.
1. The fine processing spindle is characterized by low noise, high speed, and high precision, and is suitable for processing particularly fine workpieces, such as seals, nameplates, badges, gifts, etc. This type of motor is usually a high-speed variable frequency motor with low power, generally below 250W. The disadvantage is that the ability to cut thick materials is poor, and it is not suitable for cutting thicker materials.
2. High-power cutting spindle, mainly used for cutting and high-power engraving, characterized by high power and strong cutting ability, especially suitable for cutting characters and three-dimensional characters. Of course, it can also make badges, nameplates, seals, etc. Such high-power spindles can generally be divided into brushless frequency high-speed AC motors and brushed AC motors according to the characteristics of the motors. The main differences are:
1). The brushless frequency conversion motor has a high speed, and the variable speed range is 700--60,000 rpm, while the maximum speed of a general brushed AC motor does not exceed 24,000 rpm.
2). The brushless frequency conversion motor has high rotation precision, low wear and low noise, and its noise is much lower than that of a brushed AC motor.
3). The stall characteristic of the brushless frequency conversion motor is good, because there is a special current limiting circuit on the inverter, the short-term stall will not burn the motor, and the brushed AC will quickly emit smoke when it is overloaded or blocked burnt and cannot be repaired.
4). The brushless frequency conversion motor adopts frequency conversion control technology to adjust the speed. It is a professional-grade product with a long service life. The manufacturer provides free replacement for one year. In the future, the motor can be maintained by replacing the high-speed bearing. The carbon brushes of the motor motor have to be replaced at about 300 hours, so carbon brushed AC motors are usually not guaranteed for one day.
