Attention to each component when selecting a laser engraving machine
Spindle motor
The spindle motor is an important part of the woodworking engraving machine, and its performance has an important influence on the overall performance of the woodworking engraving machine. Generally, it can be divided into brushless inverter high-speed AC motor and brushed AC motor according to the characteristics of the motor. The main difference is: A, the brushless variable frequency motor has high speed, the shift range can be 7000-60000 rpm, and the instrument has brush communication. Motor Highest speed does not exceed 24000 rev / min; B, brushless variable frequency motor has high rotation precision, low wear, low noise, working noise is much lower than brushed AC motor; C, brushless inverter motor has good blocking characteristics, due to inverter There is a special current limiting circuit. The short-time blocking will not burn the motor; while the brushed AC motor will quickly burn out when it is overloaded or blocked, and it cannot be repaired. D. Brushless frequency conversion AC motor adopts frequency conversion control technology to adjust speed. It is a professional grade product with long service life. The manufacturer provides one year free replacement.
2. Guide rail
The X-axis and Y-axis of the small-format engraving machine mostly use imported linear cylindrical guide rails, and the guide rails should be directly mounted on the bed base and the beam base, and the guide rail base is fastened and locked to ensure the rigidity. In some models, the guide rails are exposed to the outside and directly mounted on the bed. It is easy to fall into the magazine, rust and cannot guarantee rigidity.
The X-axis and Y-axis of the large-format engraving machine mostly use the imported linear square guide rail, and the rigidity and stability are better than the circular guide rail. Most of the large-format engraving machines use gantry, why not use the carriage to move, because the contact surface of the carriage and the screw is small, large-format machines often process heavy materials, the platform is easy to deform; when moving heavy materials, the pallet moves The inertia is large, the accuracy is not accurate; and the movement of the carriage takes up a large space, and the working area is very inconvenient.
3. Screw
The lead screw is generally made up of a cheap ordinary rib screw and an expensive professional grade ball screw. The main features of the ball screw are high precision, good motion characteristics, long resistance and long life. It is widely used in precision machine tools. It is an important and expensive part in the engraving machine. The precision of the engraving machine is determined by it. The ordinary screw has low precision, low resistance and short life, and the gap is easily generated due to wear, so the precision is lowered, and the price is far lower than that of the ball screw.
4. Drive motor
5. Accuracy
6. Engraving speed
The engraving speed is determined by the mechanical properties of the engraving machine, the design performance of the electrical circuit, and the design performance of the software.
