The main components of Woodworking CNC Router

The spindle motor is an important component of a computer engraving machine, and its performance has a crucial impact on the overall performance of the computer engraving machine. Machining spindles are usually divided into two categories: precision machining spindles and high-power cutting spindles.

1. The characteristics of precision machining spindles are low noise, high speed, and high precision, which are suitable for processing particularly fine workpieces, such as seals, nameplates, badge gifts, etc. This type of motor is usually a high-speed variable frequency motor with a small power, usually below 250W. The disadvantage is that the ability to cut thick materials is poor, making it unsuitable for cutting thicker materials.

2. High power cutting spindle, mainly used for cutting and high-power carving, characterized by high power and strong cutting ability, especially suitable for cutting characters and three-dimensional characters. Of course, it can also be used to make badges, nameplates, seals, etc. This type of high-power spindle can generally be divided into brushless frequency high-speed AC motor and brushed AC motor based on the characteristics of the motor. The main difference is: A. Brushless variable frequency motor has a high speed, with a speed range of 700-60000 rpm, while generally brushed AC motor has a maximum speed of no more than 24000 rpm; B. Brushless variable frequency motor has high rotation accuracy, low wear and noise, and its noise is much lower than that of brushed AC motor; C、 Brushless variable frequency motors have good stalling characteristics. Due to the special current limiting circuit on the frequency converter, a short period of stalling will not burn the motor. However, when the brushless AC machine operates under overload or stalling, it will quickly smoke and burn out, and cannot be repaired; D、 Brushless variable frequency motors use variable frequency control technology for speed regulation, which is a professional product with a long lifespan. The manufacturer provides a one-year free replacement, and in the future, the motor can be maintained by replacing high-speed bearings. However, for brushless AC motors, the motor or motor carbon brushes need to be replaced after approximately 300 hours of use, so carbon brush AC motors usually do not have a warranty for a day.

Selection of control mode and speed

There are three types of control methods:

A、 All computational work is completed by computer control.

B、 Controlled by a microcontroller.

C、 The system uses a USB port to transmit data and has a memory capacity of over 32M..

Guide rail

The large format engraving machine must use widened imported square guide rails, which have a load capacity and accuracy retention capacity of more than 30 times that of circular guide rails, ensuring the high-quality and high-speed of the engraving machine.

accuracy

Small format engraving machines can carve 1mm Chinese characters, or large format engraving machines can carve 1.5mm small characters, which can be seen very clearly under a magnifying glass.

The main characteristics of the application of SAJ frequency converter in woodworking carving machines

1. Large low-frequency torque and stable output

2. High performance vector control

3. Fast torque dynamic response and high stability accuracy

4. Slow down and stop at a fast speed

5. Strong anti-interference ability