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Relationship of the material and focus point of fiber laser cutting machine-Cathy

focus pointRelationship of the focus point and the material of fiber laser cutting machine-Cathy

1.Focus point on the surface of the material

This method also calls 0 focal length, in this method, the focus point close to the surface of the material. In this way, the smoothness of the upper and lower surfaces of the material is different. The near-focus cutting surface is more smooth. The lower surface away from the focus point is more rough. You should use this mode according to the process requirements of the upper and lower surfaces in the actual application.

2. Focus point inside the material

This method also calls positive focal length. When the material you need to cut is stainless steel or aluminum, you should set the focus inside the material. However, as the cutting surface is far away from the surface of the material, the cutting edge width is larger than the focus point on the surface of the material. Meanwhile the cutting gas in this method need to be more stronger. The temperature need to be enough. The cutting perforation time is slightly longer. Therefore, you should use this mode when the material you choose is mainly stainless steel or aluminum material and hard material.

3. Focus point on the material

This method we also calls negative focal length. Because the cutting point is not on the surface of the cutting material nor inside the cutting material, but rather above the cutting material. This method mainly used for cutting thick materials. Why focus on the top of the cutting material? Because the thick plate needs a large cutting width. Otherwise the oxygen delivered by the nozzle is very likely not enough. And lead to lowered the cutting temperature. However, the cutting surface in this method is rough and not practical for high precision cutting.

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Learn these laser maintenance points and make your lasers last longer!—Winnie

Learn these points and make your lasers last longer!

As we all know, the core component of fiber laser equipment is a laser. If the laser is damage, the machine will not work properly, which will seriously cause the entire laser to scrappe. It will directly affect the satisfaction of the end-users. The most important thing is that the terminal customers are not professional enough and will only complain about suppliers and equipment vendors. According to previous maintenance cases, the phenomenon of water ingress and oil in the laser can avoide.

laser maintenance

1. If possible, place the laser in a control cabinet with heat dissipation and separate it from the machine.

Due to the daily maintenance of the machine tool, a large amount of lubricating oil must add regularly. Or the laser place in an improper position, too much lubricating oil may seep into the laser.

If the laser place inside the machine, be sure to check if there is any oil leaking onto the laser every day.

If find oil leak into the laser, stop using the laser immediately and contact the factory for repair.

2. It is strictly forbidden to place the laser in an area where water or oil is accumulated in the low temperature.

3. Prepare a temperature and humidity meter, put it in the working environment of the laser, and check the temperature and humidity of the site in real time to ensure that the ambient temperature is within the range of 5-40 °C and the relative humidity is below 75%.

4. Before the laser is turned on every day, check that the cooling water pressure is between 1.5-3.5 Bar.

5. Check the water supply of the laser and the joint of the pipe joint for water leakage. If there is any water leakage, it should be repaired in time.

6. Check the laser cooling water circuit for impurities. Replace the chiller filter regularly to ensure the water quality is qualified. Check the water pipe joint for corrosion. If it is, it should be repaired in time.

3D laser cutting technology2 —Winnie

3. Respond quickly to the market

The cost of developing molds is high. In addition, today’s consumption emphasizes individualization, and the product renewal cycle is gradually shorten. The original mold production is difficult to adapt to faster and faster product replacement due to its own limitations. In the rapid response to market demand, the use of 3D laser cutting. Moldless rapid processing technology will undoubtedly gain a huge competitive advantage.

4, intelligent automated production

The perfect combination of advanced 3D robot fiber laser cutting and automatic control. Network control technology and computer production auxiliary management system technology, so represents the most advanced laser cutting level. At present, so the three-dimensional laser cutting is developing in the direction of unmanned and automated laser cutting unit. The HyRobot C20 3D robotic fiber laser cutting machine of the Hanzuo Songgu Laser has a self-developed professional laser cutting machine control system, so computer operation, and a large process database embedded in it. It is easy to use and smarter, which effectively reduces the difficulty of use. The machining path is controlled by the program. If the machining object changes, you only need to modify the program. At the same time, the interface-friendly intelligent handheld operation terminal is configured, which fully conforms to the ergonomic design and reduces the operation difficulty in all directions.

Equipped with remote intelligent monitoring system, HyRobot C20 3D robotic fiber laser cutting machine is more intelligent and more powerful. It can monitor the running status of equipment through mobile and PC end in real time; support optical path adaptive system;  automatic lens detection; remote assistance to handle equipment failure functions; minimize equipment failure rate, reduce equipment maintenance and repair costs, and improve equipment continuity. Through professional digital control system, so users can organize a large number of 3D laser cutting units (FMC) to form an automated production line, which truly realizes intelligent automation and unmanned production and management of processing operations.

5, safety and environmental protection

Fiber laser cutting has high electro-optical conversion efficiency, low processing waste, low noise, clean, safe and pollution-free, which greatly improves the working environment and is more energy-saving and environmentally friendly. And the all-enclosed protection device designed by the Hyundai Songro HyRobot C20 3D robot fiber laser cutting machine adopts safety interlock design to effectively isolate the processing area and avoid laser radiation damage. It fully meets the most stringent European laser equipment safety design standards and maximizes The ground protects the personal safety of the equipment operator. Combined with the automatic dust collection system, it is more environmentally friendly and truly achieves both safety and environmental protection.

3D laser cutting technology1—Winnie

3D laser cutting technology1

3D laser cutting processing range. Suitable for cutting stainless steel, carbon steel, alloy steel, silicon steel, galvanized steel, nickel-titanium alloy. Inconel, aluminum, aluminum alloy, titanium alloy, copper and other metal materials. Covering the entire The industrial application field of metal materials is widely used in the trial production of molds and small batch production of molded parts.

In the process of moldless processing, various cost of consumption. Rapid response to the market, so intelligent production and safety and environmental protection are more advantageous.

1, no mold processing

In the process of product modification and stamping die modification. The original mold is deepened and the hole position and trimming are processed by using three-dimensional laser cutting technology. Which greatly shortens the trial cycle. At present, three-dimensional laser cutting has the tendency to replace the trimming die and the punching die. For example, in the lightweighting process of automobiles. Thinner high-strength steel sheets are used. Especially for steel sheets with a strength of up to 1500 MPa.

Due to the high strength. The service life of the die or the tool of the conventional equipment is high when processing these high-hardness materials. It will greatly shorten, and laser cutting does not have to consider these issues. In addition, non-planar parts like automotive parts need to be completed by 3D laser cutting. And non-three-dimensional plane cutting can not  do.

In terms of 3D machining, the HyRobot C20 3D robotic fiber laser cutting series developed by. Hansong Songgu Laser replaces the traditional expensive 5-axis machine tool to realize 3D laser cutting, using high-precision Staubli robot. All-aluminum arm, light weight and unique The lifting assembly has a large working range and can process in any posture. The robotic arm is up to 2.01m, and the cutting table width can reach 2m. It exceeds the width of the expensive six-axis machine table. The general-sized molded parts can process in the working area of ​​the cutting table.

2, the cost of consumption is lower

Compared with the traditional three-dimensional cutting system. The combination of three-dimensional industrial robot and fiber laser cutter greatly reduces the cost of the three-dimensional cutting system and reduces the footprint of the system.

The fiber laser uses semiconductor modular and redundant design, resonance There is no optical lens in the cavity. No start-up time requiry, so it has the advantages of no adjustment, maintenance-free, and high stability, which reduces the cost of accessories and maintenance time. At the same time, the electro-optical conversion efficiency of fiber laser is high.

And the conversion efficiency is more than 25%. It is 2-3 times of the same power CO2 laser. Resulting in less processing waste, especially in the cutting process of sheet metal. Which reduces the overall processing time cost and improves production efficiency.

Fiber laser is one of the latest laser technologies. In terms of lasers, Hyundai’s HyRobot C20 3D robot fiber laser cutting machine adopts German imported fiber laser, which has the advantages of large heat dissipation area, good beam quality and small size. Compared with traditional lasers, fiber lasers have better cutting quality, lower system cost, longer service life and lower maintenance costs, and lower power consumption. At the same time, equipped with the German original intelligent follow-up three-dimensional laser cutting head, to avoid the user’s excessive dependence on skilled operators, reducing the cost of labor costs.

Protective measures necessary to operate the laser cutting machine–Winnie

Protective measures necessary to operate the laser cutting machine

Since the main working principle of the laser cutting machine relies on the laser. It is said that in the industrial operation. It is necessary to carry out some necessary protective measures to avoid unnecessary damage to the body. Let’s take a look at the normal operation of this…
Since the main working principle of the laser cutting machine relies on the laser. It is said that in the industrial operation. It is necessary to carry out some necessary protective measures to avoid unnecessary damage to the body. Let’s take a look at the necessary protective measures to do when cutting this laser principle.

First, pay attention to the protection of the eyes

Generally, when we use the laser cutting machine, we all tend to look at the cutting head of the laser, but this habit is actually the biggest killer for the eyes, because it has been staring at the sparks generate by the cutting for a long time, The eyes are hurtful. It is obvious that the long-term look will make the eyes feel tingling. This is the most direct damage. At the same time, when the laser is cutting, a special kind of laser is emitting. This substance is highly concentrated in the processing workshop, and is directly focused on the retina by the refractive medium of the eye to form an image, which will make the energy density on the retinal membrane higher than the energy density on the cornea, so it will Causes damage to the cornea or retina of the eye.

Second, skin protection

In addition to the eyes, the laser stimulates the skin is not small, the laser can cause damage to the skin tissue, but the damaged skin can repaire by itself, although the overall function of the skin will reduce, but it will not affect the overall function. The structure, but if you do not pay attention to the irradiation under the laser for a long time, it will cause skin burns or scars, although the laser damage to the skin is much smaller than the eye, but it should also attract enough attention. .

Third, the protection of the respiratory tract

Finally, it is possible to affect our respiratory tract when operating the laser cutter. Because the laser will produce a certain high temperature, this high temperature can combine with the gas to complete various cutting work. In this process, a large amount of dust will  generate. Especially when processing some special metal materials, the generated dust will contain many chemical components. Therefore, it is harmful to the human body after inhalation.

How can you be so confident that your diodes have this life-time?–Winnie

Why is IPG fully vertically integrated?

There are three main reasons:

  • Many of the components used by IPG are not available on the open market. Or do not meet the stringent requirements required for high power fiber lasers.
  • Vertical integration allows IPG to better optimize components for our unique systems. To respond quickly to customer requests and to bring product to market rapidly.
  • Finally, it allows IPG to closely control cost to maximize the benefit to our customers.

How can you be so confident that your diodes have this life-time?

IPG Photonics tests 100% of their diodes before they are certified for a laser or amplifier. Duration of the test generally is longer than 1,500 hours when diodes are operating at stressed conditions, greatly elevated temperature and current.

If the diodes pass this test with no drop off in power they are certified for usage in our devices.  Whether the diode useing a 10 kW fiber laser for materials processing or a broad band fiber amplifier for telecom, similar procedures are following.  IPG is now the largest manufacturer of single emitter multi-mode diodes. With the most extensive diode test facility in the world.

With over 10,000 high power fiber lasers in use in production applications around the world, some of which have been in operation for over 10 years, IPG has the experience and statistical data to support its statements regards diode lifetime.

Six major industries for fiber laser cutting machines–Winnie

Six major industries for fiber laser cutting machines

At present, fiber laser cutting machines is gradually popularized in China’s major metal processing industries. In which industries is the mainstream application?

1. The automotive industry.

Many corners of the automotive industry, such as automobile doors and automobile exhaust pipes, need to be processed after the formation of some extra corners or burrs. If artificial, the precision is difficult to achieve at first, and the efficiency is second. So the robotic laser cutting machine can process batches faster.

2. Advertising industry.

Due to the customization of the advertising industry, the traditional method is very inefficient. Mostly that with the laser cutting machine, so no matter how thick the plate, and also no matter how many glyphs, the laser cutting machine will satisfy you.

3. Kitchenware industry.

Nowadays more and more houses, more and more decoration, also more and more demand for kitchen related products, laser cutting machine is suitable for cutting thin stainless steel, fast speed, high precision, high satisfaction, and can realize customized and personalized product development. , won the kitchen manufacturers love.

4. Sheet metal processing.

Simply put, processing is a variety of plates, a variety of different graphic cutting parts, the characteristics of laser cutting machine in this industry is in full swing.

5. Cabinet industry.

Including power distribution cabinets, file cabinets, etc., all standardize production of thin plates, requiring efficiency, using laser cutting machine four or six stations is more suitable, high efficiency. It can also cut in two layers for a specific sheet.

6. Fitness equipment.

Due to the state’s emphasis on sports health and the development of personal health concepts. Square fitness equipment and home fitness equipment have gradually developed, and the demand has gradually increased. Basically, some pipe cutting is convenient, and it is convenient and quick to use the pipe laser cutting machine.

How to cut a good sample with a laser cutter?–Winnie

In laser cutting machines, several key technologies must mastere. And solved for parts with high cutting precision or large thickness. Focus position control is one of them. One of the advantages of laser cutting is that the energy density of the beam is high. So the focal spot diameter is as small as possible to create a narrow slit. Because the focal depth of the focusing lens is smaller, the focal spot diameter is smaller. For high quality cutting, the effective depth of focus  also relate to the lens diameter and the material being cut. It is therefore important to control the position of the focus relative to the surface of the cutting material.

How to cut a good sample with a laser cutter?

Since the laser power density has a great influence on the cutting speed. The choice of lens focal length is an important issue. After the laser beam is focus, the spot size is proportional to the focal length of the lens. After the beam is focuse by the short focal length lens, the spot size is small, and the power density at the focus is high, which is good for material cutting. However, its shortcoming is that the depth of focus is very short and the adjustment margin adjust. Small, generally suitable for high-speed cutting of thin materials. Since the telephoto long lens has a wide focal depth, it is suitable for cutting thick workpieces as long as it has sufficient power density.

After determining which focal length lens to use, the relative position of the focus to the surface of the workpiece is particularly important to ensure cutting quality. Due to the high power density at the focus, in most cases, the focus position at the time of cutting is just at the surface of the workpiece, or slightly below the surface. Ensuring a constant relative position of the focus to the workpiece throughout the cutting process is an important condition for obtaining a stable cutting quality. Sometimes, the lens is heated due to poor cooling and causes a change in focal length, which requires timely adjustment of the focus position.

When the focus is in the proper position, the slit is small, the efficiency is high, and the cutting speed can obtain a good cutting result. In most applications, the beam focus is adjuste just below the nozzle. The distance between the nozzle and the surface of the workpiece is generally about 1.5 mm.

In the laser application process, there are often problems such as focusing. And there are three convenient ways to determine the focus position:

(1) Printing method: The cutting head is move from top to bottom. And laser beam printing is performing on the plastic plate, and the smaller diameter is the focus.

(2) Inclined plate method: The plastic plate obliquely placed at an angle to. The vertical axis is horizontally pull to find the smaller portion of the laser beam as the focus.
(3) Blue spark method: remove the nozzle, blow the air. And pulse the laser on the stainless steel plate to move the cutting head.  From top to bottom until the blue spark is larger.

4 aspects to judge the quality of fiber laser cutting-Anne

4 aspects to judge the quality of fiber laser cutting

Grasp the rules of the various technological factors in the processing of fiber laser cutting machine on the surface quality, we can find the process measures to improve the cutting quality, to improve the quality of the materials surface.

For laser cutting, evaluation of the quality of their processing are mainly the following 4 points:

Keep perpendicularity is good, heat-affected area is small

The perpendicularity of the cut edge is important when the thickness of the machined material exceeds 18 mm;

the laser beam diverges away from the focus, and the cut becomes wider toward the top or bottom depending on the focus position.

Cutting edge deviation from the vertical line a few millimeters, the more vertical edge, the higher the cutting quality.

Heat effects of cutting materials

As a hot cutting application equipment, it is have to exert a thermal influence on the material during its use, which mainly includes three aspects:

a. Heat affected zone; b. Depression and corrosion; c. Deformation of material
The heat-affected zone refers to during the laser cutting, along which the area near the incision is heate. At the same time, the structure of the material itself changes.
This is especially important in fine workmanship, where the contours and tabs are usually only a few tenths of a millimeter wide. Controlling fiber laser power and using short laser pulses can reduce the risk of heat build-up and avoid distortion.

Narrow kerf width;

The cutting width generally does not affect the quality of the cut.

The cutting width has an important influence only when a particularly precise profile is formed inside the part because the cutting width determines the minimum internal dimensions of the profile. As the thickness of the plate increases, the cutting width also varies with Increase.

So you want to ensure that the same high-precision, regardless of the width of the incision, the processing of the laser cutting machine processing area should be constant.

Cutting surface smooth, less lines, no brittle fracture

When the laser is cutting the sheet at high temperature, the traces of the molten material do not appear in the notch below the vertical laser beam, and instead, it is ejected at the rear of the laser beam.As a result, the curved lines are formed at the cutting edge and the lines closely follow the moving laser beam.

In order to correct this problem, the feed rate is reduced at the end of the cutting process and the formation of lines can be substantially eliminated.

Hope this information is helpful for you.

If you have any questions ,welcome to contact us.

Sales Manager:Anne Zhang

Mob.whatsapp:+8615098735595

Skype:amyzhang1321

Email:xintian121@xtlaser.com

The reasons why fiber laser cutting machine has errors-Anne

The reasons why fiber laser cutting machine has errors

Fiber laser cutting machine is popular with the high cutting precision and high efficiency. However, sometimes the operator find that the fiber laser cutter has some errors in cutting.
The following are several factors that may exist in this situation.

1. Too thick material.

If it is out of the cutting capability, the machine will has cutting errors.

2. Laser output power is not up to standard.

When debugging the machine, it is necessary to ensure that the laser output power reaches the standard. Generally, the higher the output power, the better cutting effect .

3. Inaccurate focus position.

If laser cutting machine the focus not aligned, it directly affects the cutting accuracy.
So be sure to calibrate before running. The machine of Leiming Laser has autofocus laser head, it is flexible focusing and can automatic cut various thickness of plates.

4. Computer malfunction.

If the operating system is infected with the virus or appear computer hardware failure, the machine will appear the problems, such as incorrect cutting pattern and cutting tolerance.
The parts of the laser cutting machine, especially the lenses, are fragile. If abnormal conditions are found during use, please shut off the power and check the machine in time in case other parts are damaged.

Hope this information is helpful for you.

If you have any questions of machine,welcome to contact us.

Sales Manager:Anne Zhang

Mobile.whatsapp:+8615098735595    Skype:amyzhang1321  Email:xintian121@xtlaser.com