How to choose the most suitable and quality wood engraving machine
To choose the most suitable and quality cnc router machine for woodworking, customers can make decision from the size, spindle motor, control mode and speed, slide way, and precision.
The choice of size
Customers should choose the suitable and proper cnc wood engraving machine based on business requirements and financial conditions.
Generally, the small sizes of engraving machine are 600mm × 600mm and 600mm × 900mm, with feeding width 700mm. Engraving double-color board with engraving machine is the most basic small-scale applications, with good acceptance. The smaller engraving machine has almost the same price, but sculpturing required for double-color board, which is troublesome and will cause unnecessary waste.
Large cnc wood engraving machines are 1200mm × 1200mm, 200mm × 1500mm, 1500mm × 2400mm, 2400mm × 3000mm. The above models of the engraving machine’s width are more than 1350mm. Now the market size of plexiglass plate and PVC board are 1300mm × 2400mm, so they are more suitable for the customers who need large engraving machine.
Choice of Control mode and speed
Wood cnc router machine is divided into three types of control method.
Firstly, all the computing work done by the computer control, when the engraving machine is at work, the computer is in working condition, thus which can not be used for other typesetting work; this type of control may cause rejects due to misuse of the computer.
The second is the use of SCM Control. When the cnc router is engraving and carving, typesetting work can be also done at the same time, but to remember to keep the computer turning on in case of rejects caused by computer misuse.
Third, the use of USB port to transfer data, the system has more than 32M memory capacity, once the file saved, the computer could be turned off or for other typesetting, which can greatly improve engraving efficiency.
Slide Way
Large-scale engraving machine slide must adopt widened imported square rail, whose load capacity and accuracy maintain is more than 30 times of the circular track to ensure high quality and high speed of the wood engraving machine.
Woodworking engraving machine slide is divided into two kinds, circular track and square track. The difference between these two rails is:
Round guide rail, bearing capacity is high, the precision is general, because circular guide rail construction cost is relatively low, production cycle short, easy to install. On many occasions it becomes substitute of square type linear guide.
Linear guide product features: high positioning accuracy, good repeatability, linear guide rolling motion, particularly small friction coefficient, especially static friction and dynamic friction of the gap very small, no slip phenomenon even in the micro-feeding, best in resolution and reproduction, so to achieve μm-level positioning accuracy. Low frictional resistance can maintain the accuracy of a long time rolling friction and reduced to sliding rail friction 1/20 ~ 1/40. Especially lubrication structure is simple, easy lubrication, excellent lubrication, low friction contact surface wear, so you can maintain a long time walking accuracy. Can withstand the four directions of the high load capacity, the best design of the geometric mechanical structure, which can withstand radial and horizontal load, and to maintain walking accuracy, and can easily be applied by the preload and slider number, You can improve the performance and load capacity. It is suitable for high-speed application. It has the characteristics of small frictional resistance, low demand for driving horsepower of the equipment, large energy-saving effect, especially small movement wear and low temperature rise effect, which can simultaneously realize miniaturization and high-speed engraving demand.
Spindle motor
Spindle motor is an important component of cnc engraving machine whose performance has a crucial impact on the engraving performance. Machining spindle is usually divided into two categories: precision machining spindle and high-power cut off spindle.
1. Fine processing spindle is characterized by low noise, high speed and height. And it is particularly suitable for processing fine workpieces, such as seals, nameplate, gifts. Such motors are usually high-speed variable frequency motor, whose power is small below 250W. The disadvantage is its poor performance to cut thick material.
2. High-power cut off spindle is mainly used for cutting and high-power engraving. It is characterized by large power and strong cutting ability. It is particularly suitable for cutting characters, three-dimensional characters, badges, nameplates, seals and so on.
Such high-power spindle can generally be divided into brushless high-speed AC motor and brush AC motor according to the characteristics of the motor. The main difference:
A, Brushless variable frequency motor speed highly with speed range of 70060000 rev / min. Generally Brush AC motor rotation speed are not less than 24,000 rev / min:
B, Brushless variable frequency motor has the quality of rotation accuracy, wear small, low noise. The noise is much lower than the brush AC motor;
C, Brushless frequency conversion motor stall characteristics. The inverter has a special current limiting circuit, so the short-term stall will not burn the motor. While the brush will soon burn in the overload operation of the exchange or stall, and can not be repaired;
D, brushless variable frequency motor control technology using frequency control, which is a professional-grade products with long life. Manufacturers offer one year free replacement, and you can also preserve motor by replacing high-speed bearings. AC motors have a life of about 300 hours, so brushless AC motors usually needn’t maintaining in a whole day.
Engraving Precision
For wood engraving machine, the processing of the larger plates, the accuracy will be relatively worse. Generally speaking accuracy in a millimeter range is not bad, if the request is particularly high, then the engraving machine price is very high. For example, carved engraving machine, the configuration of the engraving machine is very high, you can carve out very high precision things, like miniatures.
The small engraving machine carve 1mm characters, while the large engraving machine carve 1.5mm small print which can be see clearly under the magnifier.
Factors of engraving machine accuracy including the following aspects:
1. Electrical part of the precision - including the drive, motor, spindle and so on
2. Orbital precision - including rails, screw, coupling and so on
3. Geometric structure accuracy - mainly three-axis vertical space, rack rigidity
4. Part of the software precision - refers to the accuracy of the output map and software analysis
Apart from these five important factors to check out before purchase the cnc router, there are some more suggestions for your reference:
1. Check the material: Each machine should have specific kind of materials to be cut through. So, be sure to check whether a particular machine supports the material you wish to work with.
2. Spare parts available or not: Make sure that you will be able to find spare parts easily, in case some parts need replacement later, due to regular wear and tear.
3. Price compare: CNC routers can be rather expensive, and you will make comparison among those engraving machine manufacturers in order to purchase quality wood carving machine with reasonable price.
Longdiao, as the profession 3d cnc wood carving machine manufacturer from Beijing, China, offers high quality cnc carving machines for worldwide customers. Different types and sizes are available for choice, such as 3d cnc wood carving machine, advertising cnc router, mini engraving machine, stone cutting machine, milling machine, cnc 5 axis machining center, atc cnc router, jewelry engraving tools, plasma cutting machine, cnc router for building models and laser carving machine.
