Condensation refers to the phenomenon that when the water vapor in the air reaches a saturated state if the ambient temperature continues to drop, the supersaturated water vapor in the air condenses into water and precipitates out. Simply put, when we put an object under a certain temperature, humidity and pressure, gradually reduce its temperature, when the temperature of the object drops below the “dew point temperature” of the environment (that is, the temperature of the surrounding air), the object precipitates and “condenses” Water”), the surface of the object will deposit water and dew, which is condensation. For example, when you walk from an air-conditioned room with glasses to the outdoors in summer, your glasses are foggy, which is also a phenomenon of condensation.

The harm of condensation to the laser

For laser cavities, optical components, and some electronic modules of lasers that require water cooling, if they work in a high temperature and high humidity environment for a long time, condensation will appear on the surface of the object. This will increase the probability of failure of the electronic module immersed in water, and may also cause the lens to be contaminated by water mist and cannot be used or burned.

• Use dew point temperature checklist

When the laser cooling water temperature is set lower than the corresponding dew point temperature in the table below, condensation is likely to occur. Training end-users to use the dew point temperature checklist can effectively reduce the risk of condensation in the environment of the laser and the processing head.

The left side is the current working environment temperature, and the top side is the current working environment humidity. The intersection temperature of the temperature and humidity parameters is the “dew point temperature” in this environment. Therefore, the adjustment principles are as follows:

The low-temperature water should be adjusted within the range of 15-30℃, and should not be lower than the dew point temperature of the environment inside the laser, and should be as close to 25℃ as possible.

Normal temperature water should be adjusted within the range of 5-30℃, and should not be lower than the dew point temperature of the working environment of the laser head, and should be as close to the current ambient temperature as possible. Otherwise, the working environment needs to be improved according to the dew point temperature look-up table.

Note: If the temperature and humidity fluctuate greatly on the day of use, the dew point temperature must be calculated based on the maximum possible value of temperature and humidity, otherwise condensation may still occur and damage the laser and laser output head.

Lasers above 1500 watts must be equipped with an air-conditioned room. If the air conditioner is not installed, it is prohibited to turn on, otherwise, the laser will be 100% dew, and related failures caused by dew will not be covered by the warranty.

Since condensation is an objective physical phenomenon, it cannot be avoided 100%, but we still need to remind everyone that when using the laser: be sure to minimize the temperature difference between the laser’s operating environment and its cooling temperature.

• Water temperature setting

High and low water cooling, set the laser cooling water temperature strictly according to the factory temperature (low-temperature 23℃, high temperature: set according to the external environment)

The cooling water temperature of the laser output head is 2℃-3℃ higher than the ambient temperature.

• Anti-condensation boot operation

Start the total power of the laser (the air conditioner is turned on), and the air conditioner runs for about 30 minutes.

Start the supporting water cooler, wait for the water temperature to rise to the preset temperature, and the laser emits light.
It is recommended that under the premise of ensuring safety, the laser should be powered off at night to keep the air conditioner in continuous operation or install the laser in an air-conditioned room.

• Anti-condensation shutdown operation

The laser stops emitting light and turns off the light-emitting signal and the enable switch.

Turn off the water cooler after 5-10 minutes.

Turn off the air conditioner (total power) after 30 minutes.

• Air conditioning maintenance

In high-temperature environments, in order to ensure that the external air conditioner works normally, clean the air conditioner filter regularly to ensure the normal operation of the equipment.

• Ensure the enclosure is sealed

The case of the fiber laser adopts a closed design and is equipped with a case air conditioner or dehumidifier, the purpose of which is to ensure that the various components in the case are in a relatively stable and safe temperature and humidity environment. If the case is not in a closed state, the high-temperature and high-humidity air outside the case can enter the case. When it encounters internal water-cooled components, it will condense on its surface, causing possible damage. In order to enable the laser to start immediately, the air-conditioned room needs to be sealed to reduce air circulation inside and outside the air-conditioned room. The airtightness of the chassis needs to be checked in the following aspects:

1. Check whether each cabinet door exists and is closed tightly;
2. Whether the lifting bolts on the top are tightened;
3. Whether the protective cover of the unused communication control interface at the rear of the chassis is covered, and whether the used ones are fixed.

The above points are some effective measures to prevent the risk of fiber laser condensation. If you encounter other problems while using the fiber laser cutting machine, you can leave us a message for consultation, and our technicians will reply to you as soon as possible. I hope it can help you.

The rack-and-pinion transmission system refers to a rack bolted to the side of the machine and pinion gear or gear/gear that meshes with the rack. As the pinion rotates, the machine moves. In the CNC router machine industry, spiral (angled) frames are widely used to incorporate drives.

Advantages of rack and pinion transmission system

The rack and pinion drive is known for its rigidity and can provide precise motion for an unlimited length of time. They are constructed to travel the entire distance of the machine regardless of length, without worrying about “spiral whiplash” (more on this later). The rack and pinion system has a long normal operation time, can be produced for several years, with minimal wear, and is very beneficial in the environment of the factory floor, almost free from dust and debris.

The design of the helical rack and pinion is angled, not straight, and there are more teeth in the mesh of the rack. The spiral design enables smooth, low-friction movement and provides zero backlashes with a position accuracy of ±.001 inches throughout the machine stroke. They also have excellent acceleration, deceleration, and processing capabilities to maintain higher speeds, which are the result of their constant stiffness and excellent power or efficiency transfer (up to 97% or more).

The simplicity of the rack and pinion design is a huge advantage that benefits the end-user. They are usually simple bolted connection systems that are easy to replace-no special skills or knowledge are required.

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Disadvantages of rack and pinion transmission system

The processing accuracy and processing technology requirements are high. If processing technology and processing technology cannot be achieved, there will be high friction and potential gaps between the rack and pinion. Fortunately, with the advancement of production technology, such as the improvement of milling, grinding and heat treatment processes, the transmission accuracy and load-carrying capacity of racks and pinions have been greatly improved.

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Ball screw is an ideal product that converts rotary motion into linear motion or converts linear motion into rotary motion. The ball screw is composed of a screw, a nut, and a ball. Its function is to convert rotary motion into linear motion, which is a further extension and development of the trapezoidal screw. The important significance of this development is to change the sliding of the screw into rolling and reduce friction. Because of its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments.

Advantages of ball screw

After the operation is completed correctly, the ball screw will have excellent accuracy, will not produce friction, and can slide smoothly. There are more installation options. The frame must be bolted along the entire length, and ball screws may be more suitable for certain machine designs. The ball screw system is also easier to use in the manufacturing process, in which case the rack and pinion may require more processes to build correctly.

Disadvantages of ball screw

As mentioned above, ball screws are known for being precise and frictionless. However, on longer shafts, the vibration may get worse as the speed needs to be increased, thus making the screw spin faster. This problem is called “screw whip”. A ball screw-driven system may require a larger motor or more gear compensation to compensate for the “screw” and maintain the positioning speed of the machine, so it is not ideal to use a ball screw on a shaft longer than 4′. Due to the short-stroke distance, the ball screw system is most suitable for height positioning or Z-axis.

In terms of speed, the ball screw cannot accelerate at the fastest speed, nor can it maintain a higher speed with higher efficiency. Their stiffness is lower and less constant. Their power or efficiency transfer is in the range of 80-85%.

The maintainability of the ball screw system is also tricky, and usually requires specialized skills to replace it, because the ball screw can be very sensitive, so this is not an ideal choice. Ball nuts are very sensitive to misalignment, especially when opposing nuts are used. Ball screws are also more susceptible to contamination, and will not tolerate harsh environments that can lead to catastrophic failures (such as stone shops).

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• Carrying capacity

The load-bearing capacity of the rack and pinion is stronger than that of the ball screw and can work under high loads and heavy loads. The rack and pinion can carry a maximum load of 15-20 tons.

• Positioning accuracy

The positioning accuracy of the rack relative to the ball screw is not so high.
The rack and pinion design may compromise the overall accuracy of the machine. Factory-produced gears cannot produce the resolution or tolerances of ball bearings. This is why when you look at any industrial machinery, you will find that the most critical axis (Z-axis) has a ball screw.

Recirculating ball bearings can be used in all linear guide systems and are trusted technology from high-end CNC router machines to high-end aerospace and metalworking router centers. Your CNC router should have the same technology so that you can work with the most advanced and accurate system.

• Moving speed

The moving speed of the rack and pinion is not as fast as the ball screw.

Ball screws can move quickly, but in simple terms, rack and pinion systems can usually provide greater linear speeds, usually with large amplitudes. If you want to shorten the cycle time, the limitations of the ball screw will only get worse as the length increases.

• Installation requirements

There are requirements for the rack and pinion installation, clearance must be reserved, and reverse gear gauges are required for installation.

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• Wear condition

Rack wear needs to be compensated, and ball screw wear needs to be adjusted.

The ball screw system improves the level of wear. The ball screw on the table of our CNC router machine consists of a sealed bearing and many recirculating ball bearings, which are evenly distributed and continuously lubricated when passing through the channel design.

Rack and pinion do not have this technology, but the gear meshes with the track without lubrication (metal-to-metal contact). You must manually apply grease to the track, otherwise, you will be contaminated by dust, dirt, and other debris when cutting. This reduces lubrication and increases the wear of the gears and their tracks. As time goes by, the gear/rack starts to wear and the tooth pitch further increases (increased clearance), which ultimately changes the overall accuracy of the table. This is caused by the rack and pinion system having to stop at the same point (teeth) over and over again. Our ball screw design does not have this problem, because many of the ball bearings of the ball screw have an unlimited number of contact surfaces that can be parked on.

• Manufacturing difficulty

The rack is easier to manufacture than the ball screw.

• Price

Rack-and-pinion is cheaper than ball screws. Generally, it is economical to choose a rack and screw for precision.

As the length increases and the requirements for force increase, precision ball screws become more and more expensive, especially when custom end machining or modification of the nut is required, or when the size needs to be increased to reduce tension or buckling force.

On the other hand, the rack and pinion can provide a high level of positioning accuracy at a relatively reasonable cost. The complexity of manufacturing components is much lower, and longer performance can be more reliable.

• Delivery time

Since almost every ball screw application requires a custom length and end finishing, the lead time can be very long. It is not uncommon to spend weeks to tens of weeks to obtain a customized ball screw assembly.

On the other hand, rack and pinion systems can usually be delivered from stock components, and only the last piece of the rack in the system needs to be simply cut.

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Both the precision ball screw system and the rack and pinion system excel in their own specific ways.

Ball screws are known for being very smooth and almost frictionless. For short-distance accuracy, ball screws are very suitable. This is why we let it handle the Z-axis. Their disadvantages include the need for precise alignment, contamination sensitivity, and the need to increase the diameter and weight related to length (span) to prevent whipping or vibration. In turn, this requires more gear units or larger motors to compensate for the weight and needs to maintain a fast positioning speed.

Rack and pinion drives are known for their rigidity and are not limited by length. The continuous stability of the precision ground helical gear system enables our CNC to run for a long time. When properly installed, they can be used for a long time with minimal wear and tear, and they are hardly affected by dust and debris. The disadvantages of rack gears include low efficiency (due to higher friction), backlash caused by poor pinion meshing, and vibration caused by tooth shape.

In summary, with regard to rack and pinion VS ball screw, I believe you now know how to choose them. Generally speaking, for small CNC machine tools of 2X2, 2X3, 2X4 ft size, the XYZ axis can all be ball screws, and for large machine tools such as 4X8, 5X10 or larger size machine tools, the XY axis frame uses pinion gears, Z It is more reasonable to use a ball screw for the shaft. If you have any questions about this, you can consult us for free, and we will recommend the most suitable machine configuration for you.

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Laser cutting equipment is mainly divided into fiber laser cutting machines, and CO2 laser cutting machines. Although they are all laser cutting equipment, their prices are different, and even the prices of similar products are different. So what are the factors that affect the cost of laser cutting machines?

• Laser cutting machine accessories

The same laser cutting machine uses different components, such as lasers, motors, laser lenses, laser tubes, control systems, etc., all of which will affect the price of the laser cutting machine.

The laser lens is related to the power of the laser cutting machine, the price is very different, and the difference between the effect and the service life is also very big.

The laser tube is the heart of the laser cutting machine. The brand and quality of the laser tube are different, and the price is also different. The service life of a good laser tube is usually about 3000 hours.

• Different modes

The price of different models (different power, different cutting formats) in the same factory will be different. Users need to choose the most suitable power supply and format according to their needs to maximize the use of cutting and bring higher benefits to customers. enterprise.

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• Equipment difference

The cutting quality and speed of the fiber laser cutting machine and CO2 laser cutting machine are different, and the price is also different.

CNC Metal Fiber Laser Cutting Machine

$7,500.00

Automatic Feeding CNC Fabric Laser Machine

$1,500.00

2025 Best CO2 Laser Engraver Machine for Sale

$2,500.00

1325 CNC Laser Cutting Machine with High Speed

$2,500.00

• After-sales service

To purchase large-scale laser equipment, after-sales service is a very critical issue. Comprehensive services can ensure the safety and timely maintenance of user equipment. The laser tube and mirror of the laser cutting machine are indispensable consumables. Service life needs to be replaced after expiration. This requires manufacturers to provide strong after-sales service guarantees and provide these consumables in a timely manner. Different manufacturers have their own advantages and disadvantages in after-sales service, so the price will be different.

• Laser machine cost

In order to reduce costs, some manufacturers use thin iron sheets to make the case, which is usually invisible to some users, but the frame deformation will occur for a long time, which will affect the cutting accuracy of laser cutting. A good laser cutting machine should have a frame structure. Made, welded with high-quality steel, and then made with high-quality cold-rolled steel. When the user buys the machine, see if the quality of the product can be determined in the following way: Using the frame structure, the thickness and strength of the casing iron can be determined.

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• The function of the laser cutting machine

Those who are familiar with laser cutting machines have increased their laser cutting machine configurations a lot, and the price has dropped a few years ago, how gratifying it is. But now some people say, don’t be fooled by things outside, if the reliability and maintenance services of many new devices are more convenient and affordable than a few years ago. In my opinion, users should pay more attention to the cost-effectiveness of laser cutting machines. “Reasonable configuration, low price” is the best choice for our laser cutting machine. Many users fall into the trap of misunderstanding. They want the laser cutting machine to be “all-inclusive.” All the things a laser cutting machine can do, this is actually wrong.

These are the six factors that affect the cost of laser cutting machines. Which cutting machine should be customized according to your needs and budget. The thickness of the cutting material can be determined according to specific power requirements.

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The acquisition cost of a laser cutting machine is usually thousands of dollars, so it is natural to want to recoup some of your investment, or perhaps start your business on this basis. But is it really possible to make money using CNC laser machines? The answer is yes. The rest of this article will detail various ways to make money with a laser cutting machine.

Think About Marketing

If you want to profit from the laser machine, you need to develop another skill. In addition to becoming an experienced mechanic, you must also become a salesperson. You need to develop sales and marketing skills to promote and sell your products. Start with some product marketing courses to master it. Understand the needs of potential customers so that you can package your products in them.

Choose and Explore Your Niche

Before you start investing money, time, and energy, you need to understand who your target market is.

The first is to understand the potential of laser cutting machines. If you already have experience using these machines, you will notice that their uses are different.

Fiber laser engraving machines are usually used to engrave and cut metal materials, such as stainless steel, carbon steel, copper, alloys, aluminum, silver, gold, and iron. Similarly, CO2 laser engraving and cutting machines are usually used to engrave and cut non-metallic materials, such as wood, fabric, acrylic, leather, foam, plastic, stone, paper, MDF, PVC.

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After that, you should focus on your niche market. Who do you want to target?

If you want to make a profit, you need to understand market needs. If you have pre-purchased a laser machine, it will be a challenge. The best situation is to study the market first, and then choose the right machine.

Ideally, this is how your research will proceed:

Consider all the products you can actually manufacture. Consider the time required, design, your machine, and other factors.

Search on the Internet to see how these products are sold.

If they are popular, try to see if you can add innovative techniques or market better than your competitors.

If not, please consider whether your market is open to them.

Check the price to see if you can provide similar products of lower quality. Consider the required time and production cost.

In addition, you must also consider the productivity of the machine.

You want to make a profit, which means you need equipment and software that can be mass-produced in a short period of time.

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The following are several projects that can make money with laser machines:

• Laser-cut coaster

Coasters have practical value, but when you make them visually interesting through some advanced design, they become more attractive-whether you sell them for profit or use them as a promotional tool for your brand.

• Acrylic souvenirs and awards

Acrylic is as elegant as silk, but it is not expensive. The logo engraved on it looks great. It is also easy to paste prints on it. It is one of the few projects that may make money solely on laser cutting machines because the design done with rotating machinery does not look so good. Therefore, customers are more likely to come to you for carving.

• Laser cutting art

Laser cutting is not only suitable for practical products, such as clocks or coasters used to pass time, to prevent scratches on the surface. This is also an ideal manufacturing technique for creating a work of art that can’t be found in any standard store.

• Provide products in multiple languages

Many companies have become globalized. Therefore, they serve countries that speak various languages. You can cater to workers who speak different languages ​​by making products with inscribed text (for example, multilingual worker awards and stationery) and earn some considerable cash. All you need is the text and formatting information sent to you. Even if you don’t know how to read the language, you can create great designs.

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• Plastic signs

Most companies use a large number of plastic signs on various devices, such as walls, security, door and information signs, and labels. The material cost of these jobs is low, and the workload is small, and the profit margin is high.
If you provide quality, develop creativity, and become a good businessman, then the laser cutting business will be profitable.

• Laser-cut bookmarks

Whether you are enthusiastically reading the New York Times bestseller, following the latest business trends, or carefully reading the pages of classic books, every book collector needs to do one thing: as amazing bookmarks as the books you read. Although most custom bookmarks on the market are made of wood or leather, this does not mean that other materials cannot be used.

• Make a puzzle kit

If you know how to design in Illustrator, Corel Draw, or Inkscape, you can make many 3D products into laser-cut puzzle kits.

The above are just a few ideas for making money with a laser machine. Please choose the most suitable method for you. However, don’t let this list limit your opportunities. There are many great ideas for you to discover to make a living.

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We hope this article can help you, no matter how much you spend on a laser engraving machine or fiber laser system, you should focus on the benefits and benefits of your investment. In addition, the intangible maintenance cost and the added value of the machine (such as a longer service life) are closely related to the quality and efficiency of the machine. If you are interested in any type of CNC laser cutter machine, please feel free to contact us and we will provide you with a more detailed quotation.

• Cooling effect

The heat dissipation of a water-cooled spindle is much better than that of air cooling: the water cooling method uses water circulation to cool the spindle. After the water is circulated, the temperature of the spindle can be kept below 40 degrees, and its cooling effect is much better than air cooling.

CNC router water-cooled spindle

CNC router air-cooled spindle

• Noise

The water-cooled spindle motor is basically noise-free. The air-cooled spindle is noisy.

• Engraving and cutting performance

Compared with the water-cooled spindle, the air-cooled spindle has larger torque and stronger cutting force.

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• Service life

The service life of a water-cooled spindle is longer than that of an air-cooled spindle: the service life of water-cooled spindles can be extended by replacing water or using industrial water coolers and other human factors.

• Accuracy

The accuracy of the water-cooled spindle is higher than that of the air-cooled spindle: the axial and radial runout of the water-cooled spindle is basically less than 0.003 mm.

• Price

Air-cooled spindles with stable performance are slightly more expensive than water-cooled spindles: many small engraving machine manufacturers will use water-cooled spindles in the initial stage, but the performance of water-cooled spindles is not as stable as that of air-cooled spindles. This is mainly reflected in the operation of water-cooled spindles. It is easily affected by the ambient temperature. In winter, the water tank of the water-cooled spindle is very easy to freeze, and finally, the spindle cannot be started and eventually broken.

• Working environment

The use of an air-cooled spindle is less restrictive: since the water-cooled spindle needs to be connected to a water pump, a bucket is needed to hold the water. And it needs to be connected to the water pipe. Since the water cooling spindle needs to be connected to a water pump, a bucket is needed to hold the water. And it needs to be connected to the water pipe.

If you are in a cool place (such as Russia), please use the air-cooled spindle of an industrial wood CNC router machine. If you are in a high-temperature place, the water-cooled spindle of an industrial CNC wood router machine will be more suitable for you. Because the cooling capacity of water is stronger.

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• Single-use time

The water-cooled spindle motor is more suitable for long-time engraving than the air-cooled spindle: the water-cooled spindle cools the heat generated by the high-speed rotation (18,000 or 24,000 RPM) of the spindle through water circulation. After the water cycle, the temperature (usually tested) will not exceed 40 degrees.

Therefore, if you want to buy a multi-head CNC router machine or a 4-axis CNC router machine with multiple rotating-axis, which is mainly used for engraving applications, it is best to use a water-cooled CNC spindle.

The main shaft is the heart of the machine. The following are some troubleshooting tips to ensure that your CNC machine is running at its best performance.

• My spindle is running abnormally hot

  Confirm that the cooling system (liquid, compressed air, electric fan) is operating normally. Monitor current consumption during cutting. Higher than normal current indicates that the tool is stuck or the feed speed is too fast. If the spindle is noisy and cannot be rotated by hand, it may be a bearing problem. Send to PDS for further diagnosis.

• The spindle stops rotating after a few seconds of starting

  The reason for this situation may be that the startup time is too short. Properly extend the acceleration time before the spindle works, and start engraving after reaching the running speed. The current protection may also be caused by the lack of phase of the spindle, which requires us to check whether the connection of the spindle motor is correct.

• Noisy spindle or spindle vibration

  Basically, these problems are hardware problems. The bearings are worn and the spindle has a lot of runouts, and it needs to be returned to the factory to replace the bearings or replace with a new spindle.

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Popular practical skills for water-cooled CNC spindle maintenance:

Please use hooks to clean the water outlet and water inlet frequently to prevent debris from clogging the water pipe.

After removing the spindle from the CNC router machine, use an air gun to blow away the residual water in the cooling chamber of the electric spindle.

If you do not use water to cool the spindle motor for a long time, you should seal it; when starting, in addition to removing the rust on the surface with gasoline, you should also pay attention to the following points:

• Lubricate with oil mist for 3-5 minutes, twist the shaft by hand, and feel smooth.
• Use a megohmmeter to check the insulation, usually greater than 10 megohms.
• Turn on the power, if everything is normal, please run at 1/3 of the rated RPM for 1 hour, if so, speed up the operation of 1/2 of the rated RPM for 1 hour, if everything is normal, then run at the full RPM for 1 hour Run.

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How to maintain the water-cooled spindle?

Woodworking engraving machine spindles are divided into water-cooled and air-cooled spindles. The air-cooled spindle only needs to occasionally clean the dust on the fan blades; while the water-cooled spindle needs good maintenance and maintenance to be used for a long time, we will come next Talk about how the water-cooled spindle should be maintained and maintained daily.

• The temperature will have a certain impact on the woodworking engraving machine and the water-cooled spindle. If the room temperature is very low, it will cause the oil and the water in the water tank to freeze. When using the machine in winter, it is best to ensure that the temperature of the processing environment is not too low. At least it must be kept above zero.
• The water-cooled spindle of the CNC woodworking engraving machine is equipped with a water circulation system. If the water inside is not clean, it will easily cause scale and block the water pipe, so it is best to use pure water.
• In winter, the temperature is very low. After the work is completed, the water should be emptied in time, otherwise, the water pipes and water tanks may freeze and crack due to the freezing of the water.
• The water in the water-cooled spindle of the woodworking engraving machine should be replaced frequently, especially in summer, if the water temperature is not enough, it will not be able to cool down, and the service life of the water-cooled spindle will be reduced if the time is long.

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Practical skills of air-cooled CNC spindle:

The air entering the electro-spindle should be dry and clean. Please ensure this.
If it is not used for a long time, the main shaft should be oil-sealed; when starting, in addition to removing the rust on the surface with gasoline, the following points should be noted:

• Lubricate with oil mist for 3-5 minutes, twist the shaft by hand, and feel smooth.
• Use a megohmmeter to check the insulation, usually greater than 10 megohms.
• Turn on the power, if everything is normal, please run at 1/3 of the rated RPM for 1 hour, if so, speed up the operation of 1/2 of the rated RPM for 1 hour, if everything is normal, then run at the full RPM for 1 hour Run.

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For CNC spindle air cooling or water cooling, which one is better? We suggest that you consider the purchase budget and local natural conditions, such as local water resources, temperature, and other factors when choosing a cooling method. Of course, you can also contact us to get the most professional advice according to your specific needs.

• The solution of bandaging knife

When the tool is stuck, press the “emergency stop switch” button on the CNC router immediately to stop the current work. Check whether the workpiece is damaged, and then grind it on the spindle for 2 hours according to the spindle running-in procedure.

• A solution of broken tools

This situation is generally due to unqualified tool quality, the low hardness of cutting and milling materials, or too fast feed speed, which easily causes short tools. When the tool is broken, you should stop cutting immediately, record the serial number of the current processing path, change the tool, find the position before the tool breakpoint, continue processing according to the initial serial number, and restore the normal processing state.

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• The chuck interferes with the workpiece

If there is interference, immediately press the “emergency stop switch” button on the CNC router machine to terminate the current processing, check whether the workpiece can be repaired. And then re-clamp the tool to continue processing. Generally, the tool length to be extended will be given in the machining process list after programming. As long as the tool is selected and clamped as required, interference can be avoided. Therefore, CNC router manufacturers remind users to choose the right tool according to the depth of the processing size. Avoid affecting the work due to inappropriateness.

• Misalignment or wrong size when engraving

1. Check whether the path of the engraving software is correct;
2. Check the gap size of the screw rod and whether the fastening screw of the polished rod is loose;
3. Check that the software parameters are set correctly.

• CNC engraving machine output failure

1. There is no output, please check whether the computer and the control box are connected correctly;
2. Open whether the space in the settings of the engraving manager is full, and delete the unused files in the manager;
3. Check whether the signal line wiring is loose, and carefully check whether all lines are connected;

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• The engraving effect is not good

1. Whether the cutter head is still sharp, if it is worn, sharpen or replace it in time.
2. Whether the tool settings in the software match the tools actually used and whether the settings are correct.
3. Whether to add lubricant when carving metal, jade, glass, and other hard materials.
4. Whether the toolbar is concentric.

More common problems and solutions for engraving machines: CNC Routers Common Problems And Solutions

• In actual use, use it normally in accordance with the operating specifications.
• Daily maintenance requires cleaning and refueling of the work surface and equipment after the work is completed every day to avoid unnecessary losses.
• Regular maintenance is required to be carried out once a month. The purpose of maintenance is to check whether the screws of various parts of the machine are loose and to ensure that the machine’s lubrication and environmental conditions are good.

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Learn more maintenance methods to extend the life of the machine: CNC Router Maintenance Checklist

• Selection of processing type

Considering factors such as processing technology, plate material, price, etc., select the machining center according to the selected processing object. For example, the processing technology is complicated and requires edge-tracking milling, pocket machining, punching, etc., you can choose with automatic tool change and with row drilling, High precision machining center;

It is necessary to perform vertical, side hole, and groove processing for small or special-shaped parts. You can choose a CNC drilling machining center that can perform point-to-point adsorption and has a movable adsorption block;

When processing complex curved surfaces, such as stair handrails, impellers, handicrafts, etc., you can choose a five-axis machining center;

When the size of the processed item is larger, you can choose a gantry machining center.

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• The accuracy selection

The accuracy of the machine tool has an important influence on the processing quality, and the general tolerance of the processing accuracy is within 20 silk.

The main factors affecting accuracy are as follows:

1. The accuracy of the machine tool itself

The stiffness of the machine tool determines whether the machine bed is stable, but the machining process of the machine tool determines the accuracy of the machine tool itself.
Small manufacturers use manual grinding of machine tools, including guide rail tables and fixed rack drilling. Due to the influence of human factors, the error will be large;
Professional CNC manufacturers will go through the milling of a large gantry CNC woodworking router before the bed enters the workshop. The guide rail table and rack surface are all CNC drilled, so as to avoid errors caused by manual processing, and the bed will also be heat treated and annealed. , Natural aging and vibration aging treatment to eliminate stress and ensure the rigidity of the machine tool.

2. Rail precision

Linear guides can be divided into three types: roller linear guides, cylindrical linear guides, and ball linear guides. The first two are faster and have lower accuracy, while the latter is slower and higher accuracy. Generally, self-lubricating and maintenance-free guide rails are selected to ensure accuracy.

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3. Lead screw accuracy

A ball screw is the most commonly used transmission element in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion or convert torque into axial repetitive force, and it has both high precision, reversibility, and high efficiency.

4. Assembly accuracy

Professional CNC manufacturers will pass triple inspections when assembling machine tools to refine inspection procedures to ensure the accuracy of machine tools:

1) Detection of geometric accuracy of straightness and parallelism:

The position accuracy detection of the verticality of the three-axis axis can detect the verticality of the x/axis to ensure that the diagonal error of the processed object is minimized. At the same time, it detects the perpendicularity of the Y/Z, x/Z axis, and the parallelism of the main axis and z-axis to ensure that the surface of the object on the milling plane is flat.

2) Inspection of the whole machine by ballbar and laser interferometer: comprehensive inspection, simulating the operation of the machine tool, and further ensuring the state of the machine tool.

• The choice of parameters

When selecting a machining center, the first parameters to be referred to are the effective stroke range and processing size. This parameter should be selected according to the actual processing size of the plate.

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Table size: This is the main parameter of the machining center, which mainly depends on the outline size and fixing method of the processed items. Choose a workbench that is slightly larger than that of the processed plate to allow space for fixing the plate or installing fixtures; also consider the load-bearing capacity of the workbench. If the load-bearing capacity is insufficient, consider increasing the size of the worktable to increase the load-bearing capacity. At present, many manufacturers of CNC machining centers will use vacuum suction tables to absorb the processed objects through a vacuum, and reserve slots for clamping, so that the processed objects can be fixed more firmly and processing more accurately. The most basic coordinate axes are x, r, and Z, and there is a corresponding proportional relationship between stroke and the size of the worktable. The size of the table basically determines the size of the processing space.

The movement accuracy and structural rigidity of the spindle components are important factors that determine the processing quality and cutting efficiency. Different machine tools of the same specification can have a large difference in motor power.

• The choice of spindle

In the woodworking industry, spindles are generally divided into air-cooled, water-cooled, and self-cooled.
The water-cooled spindle has a good cooling effect, but the maintenance is complicated. Usually, clean water is required. If used for a long time, the scale produced will corrode the internal pipe fittings of the spindle.
The air-cooled spindle is easy to maintain and use, and the cooling effect is not as good as water cooling.
For different materials, customers can choose different powers. For example, when processing ordinary acrylic plates, the spindle below 3.OKW is used, and the vibration amplitude of the spindle with low power is stable to ensure the smooth surface of the processed material and the effect is better; for solid wood doors, etc., the power above 9.0RW can be used, with large cutting force and processing efficiency.

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• Selection of automatic tool changer (ATC) and tool magazine capacity

The automatic tool change system is an important part of CNC machine tools. It mainly transfers the tools needed for processing from the tool magazine to the spindle tool holder. The structure of the tool magazine and the working method of tool exchange will affect the tool change efficiency of the machine tool. The tool magazines commonly used in machining centers are row type, hat type, and disc type. These three types of hat type tool magazines have fast tool change speeds. , The tool position is accurate; the speed of the traditional row-type tool magazine is slow, and the tool needs to be re-calibrated after the tool is changed.

• The choice of brand

To buy a machining center, you still have to choose a good brand. Although branded products are expensive, they are valued for money. A good machine creates value for you invisibly. If you buy a poor machine that breaks twice in three days or the accuracy is not up to The production fails to meet customer requirements. When choosing a machine, you should check whether the brand is a regular manufacturer, and implement the company’s scale and technical capabilities. Those who do not have a factory agent or a small factory with only a few people, don’t think about it. They can’t be cheap for a while. If the machine has a problem, no one can be found. Such things happen from time to time. At the same time, it also depends on whether the after-sales service is timely. Even the best machine may be broken. At this time, you need to choose a good service provider. Those who don’t talk about credit and repair in time should be ignored.

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• The chassis

Cut off the power supply of the distribution box, use a vacuum cleaner (note: household vacuum cleaner) to clean the dust in the distribution cabinet (note: do not blow directly with an air gun, raising the dust will cause poor contact of the electronic components), and place the cabinet dry after cleaning.

• The Machine body

After cleaning the dust and impurities on the machine tool screw, rack, and guide rail with an air gun, use a brush to brush the rack and guide rail with lubricating oil (use machine tool guide oil ISO VG-32~68 mechanical oil, no butter), It has been ensured that there is oil on the guide rail and rack of each shaft (open the oiler on the machine to add oil to each lubricating block), and drain the water from the oil-water separator behind the bed.

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• Row drill package

Air gun cleans up surface impurities. HSD CNC drilling gearbox and sawing unit need to be filled with lubricating oil from the lubricating nozzle: fill 5cm³, and the lubricating grease is KLUBER ISOFLEX TOPAS L32. FAM CNC drilling gearbox and sawing unit need to add KLUBER ISOFLEX TOPAS NB 52 grease to the grease nipple of the gearbox and sawing unit respectively for lubrication. The gearbox is filled with 10 cm³ and the sawing unit is filled with 2cm³.

• Spindle and tool holder

The tool holder on the spindle should be removed, and the taper hole of the spindle should be wiped clean with a clean cloth. Check whether the handle is loose or not. Please tighten the nut first and loosen. Clean the spring clip and nut with an air gun. Wipe it with a clean cloth and apply a little oil to the handle, nut, and taper handle.

• Vacuum pump

Baker and FORSUN dry pump users clean the filter element dust in the vacuum pump before the holiday and add 20g Amblygon TA15/2 grease.

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• Vacuum cleaner

Clean the dust and impurities in the dust suction port, and clean the sawdust in the cloth bag.

• The equipment is covered

The equipment is well maintained. If possible, it can be covered with a plastic bag (machine tool cover) to prevent dust.

• Before leaving the factory

Before leaving the factory, customers should ensure that all electrical equipment is always powered in, and the main air intake switch is turned off to avoid unnecessary troubles due to unmanned management during the holidays.

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1. The main switch and sub-switch of the power supply of the connected equipment are in the off state, and the central control computer is packed in plastic bags to prevent moisture;
2. The posture of each functional robot is in the original state of zero points, keeping the overall balance, and the suction cups are packed in plastic bags;
3. The hanging curtains of each buffer warehouse are dropped to the lowest state to reduce the force;
4. The computer of the edge banding machine is packed in plastic bags to prevent moisture. The glue pot is closed without glue leakage;
5. Connect the internal dust removal (vacuum cleaner) of the central control cabinet of each unit, clean the air conditioner and fan filter, put a desiccant inside to prevent moisture, and close the cabinet door.
6. Check the wear of the drumline belt, photoelectric fixing, and wiring, and reserve common accessories.

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After the festival, check the installation of the cable troughs and bridges to prevent the cables from being bitten by rats;

Dust and wipe all photoelectric switches before starting the device;

When you start work after the holiday, take an NC program and run the knife high for about 5 minutes, so that the machine has a break-in phase, don’t just start working.

After the holiday, check the drum line belt wear, photoelectric fixing and wiring, and reserve common accessories.

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• Cost

The prices of both CNC motors are very reasonable, but the price of stepper motors is usually lower. Even if the servo motor and the stepper motor have the same rated power, the price of the stepper motor is usually lower. Stepper motors are easier to find, so they have more features.

• Versatility

Stepper motors are incredibly versatile, which makes them very popular among hobbyists and industrial applications. Stepper motors can be found in thousands of products from personal computers to automobiles.

• Reliability

The reason why stepper motors are more reliable than servos is that stepper motors do not require encoders. Servo motors are also very reliable, but they require an encoder that is known to fail.

• Noise

The noise generated by the servo motor is very small. Due to the control process, the stepper motor will produce a slight buzzing sound. However, high-quality drivers will reduce the noise level.

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• Effectiveness

The servo motor is very efficient. Under light load conditions, the efficiency can reach 80-90%. Stepper motors consume a lot of power to output, a large part of which is converted into heat. The efficiency of a stepper motor is usually about 70%. This is also a great feature to help you decide which one to choose.

• Motor design

In general, the design of servo motors is more complicated due to internal parts and encoders. Stepper motors are easy to use and easy to understand, thus winning the field of motor design.

• Motor life

The brushes on the servo motor must be replaced every 2000 hours of operation; in addition, the encoder may need to be replaced. The bearing on the stepper motor is the only vulnerable part, which slightly reduces the service life of the stepper motor.

It is useless to argue about which is better, stepper or servo, because which one to choose depends on the client’s budget and the work he is going to do through the CNC router. When customers purchase CNC woodworking engraving machines, they can also choose the corresponding motor configuration according to their own needs. This will not only meet the processing requirements but also save costs.

Have questions about choosing to use servo and stepper motors?  Contact us so that you can find the right motor and find the right CNC machine. You just need to tell us your budget and completed work, and we will help you get the correct configuration of the CNC router.