Improve the efficiency of laser cutting machine

Improve the efficiency of laser cutting machine 

Laser cutting machine is mainly using laser beam to the plate surface and release energy to see steel melting and evaporation, because energy is highly concentrated can rapid local heating to melt and vaporize steel plate, because the energy is concentrated, just only a small amount of steel reached other parts, basic not caused any deformation, using laser can produce complex shape of the workpiece, the cutting of the workpiece, the does not need for the next step processing can be used directly.
Laser cutting machine has three advantages: good cutting quality, fast processing speed, clean, safe, no pollution, in the production of laser cutting machine power is certain, so I want to improve efficiency, it is necessary to adjust operation.

1 The learning and manipulation of new machines           

In the process of operation, the operator needs to strengthen the learning and skills of the machine performance through the daily production. To will work on an alternative practice, spare time to strengthen the machine in all aspects of knowledge learning, do meet machine appear small problem can be solved, the problem appeared to know where the problem lies, and help solve the problem.

2 Know how to modify the CNC cutting procedures           

For CNC laser cutting machine, make changes to the program, using linear surgical method, will drive up to the point on the arc, the cutting down of circular cross section is very smooth, to ensure that the quality of the parts.

3 Optimize the scheduling scheme           

Through consultation and the fish Technology Department of the workshop, the two beam sharing a common edge cutting, this does not affect to the cutting effect, so the efficiency is to artificially raise.

A comprehensive analysis of technology characteristic of laser cutting machine

A comprehensive analysis of technology characteristic of laser cutting machine

With the development of laser technology and mature, laser equipment has been widely application in all walks of life, such as laser marking machine, laser welding machine, laser drilling machine and laser cutting machine, and so on, especially CNC laser cutting machinery and equipment in recent years rapid development, is widely used in sheet metal, metal products, steel structure, precision machinery, auto parts, glasses, jewelry, nameplate, advertisement, arts and crafts, electronics, toys, packaging and other industries. Compared with other cutting equipment, CNC laser cutting machine is mainly reflected in the following aspects:

1, with high cutting speed, cutting quality is good, high precision;      
2, cut line is narrow, the cutting surface is smooth, does not damage the work piece;          
3, not affected by the shape of the workpiece, the material is not affected by the hardness;          
4, in addition to the processing of metal materials, but also for non metal cutting processing;          
5, saving investment, saving materials, more effective cost savings;      
6, the operation is simple, safe, stable performance, improve the speed of new product development, with a wide range of adaptability and flexibility.

Mechanical structure of metal CNC laser cutting machine is the most important part, not only most of the components are installed in the rack, and also the work gravity and acceleration and deceleration during the full impact loads.

CNC laser cutting machine design and development work including:

1, determine the CNC laser cutting equipment in a variety of conditions and the environment of fast, high precision, stable operation of the conditions.       2, according to the functional requirements of the frame structure, parameters, combined with the structural characteristics of the laser cutting machine, the establishment of the corresponding dynamic model.          
3, the structure and parameters of the frame are studied, the influence of the parameters on the static and dynamic stiffness and thermal stability of the frame are studied, and the theoretical basis for the design of the frame is provided. 4, determine the frame and other parts of the mutual coupling relationship

Therefore, CNC metal cutting machine designed in how to arrange the metals to reduce weight, increase body stiffness, reduce the effects of temperature change on accuracy, it is necessary to focus on the problems in the design process.
Therefore, in CNC metal cutting machine design how reasonable layout of metal, reduce weight, improve the body stiffness, reduce the influence of temperature change on the accuracy, is should be focus on the problem of the design process.
In the metal cutting laser circuit, there is a strong interference between analog signal and digital signal problem. Photoelectric isolation circuit is in electrical isolation to light for coal medium of transmission signal, the input and output circuit can isolate. So it can effectively suppress noise in the system, to clear the earth loop interference, responds faster, long service life, small volume, shock resistance etc. the benefits the in the strong - weak interface, especially in microcomputer system of backward and to the channel obtained widely application.

Photoelectric coupler has three characteristics:          
1, the signal is transmitted to take the form of electric light electricity, the light emitting part and the light receiving part are not in contact, which can avoid the feedback and the interference of the output end to the input end;     2, the ability to suppress noise interference;          
3, with a durable, high reliability and high speed and other advantages, the response time is generally within a few, the response time of high-speed optoelectronic coupler and some even less than 10ns.
Therefore, in the numerical control laser cutting machine system circuit design, should pay attention to the isolation of the input signal circuit and SCM connection. Here, the use of photoelectric coupling is the most commonly used method.
In the industrial manufacturing system of heavy metal processing industry, a lot of metal materials, no matter what kind of hardness it is, can be carried out without deformation cutting. Of course, for high reflectivity materials, such as gold, silver, copper and aluminum alloys, they are also good heat transfer conductor, so the laser cutting machine is difficult, and even can not be cut.
In spite of the laser cutting machine specific technology was a huge advantage, but as a high-tech equipment to use laser cutting machine to achieve the ideal cutting and processing effect, must also master the processing technical parameters and operation processes. Especially in the metal laser cutting machine cutting process, to select the appropriate cutting speed, or may cause some undesirable cutting results, mainly in the following:
1, when the laser cutting speed is too fast, it will cause the following adverse results:          
①.Method of cutting, spark spraying;          
②.The cutting surface is inclined to the lines, and the lower part of the production of molten stains;          
③.Cause the whole section is rough, but no melt stain is produced;
2, on the contrary, when the laser cutting speed is too slow, it will cause:   ①.Melting condition, the cutting surface is rough.          
②.The slit width, in sharp parts of the whole.          
③.Affect the cutting efficiency.
Therefore, in order to make the laser cutting machine equipment to better play its cutting function, you can cut the spark from the laser equipment to determine whether the feed rate is suitable:          
1, if the spark from the top down, it indicates that cutting speed is appropriate;          
2, if the spark back tilt, it indicates that the feed rate is too fast;       3, if the spark is not diffusion and less, together, it indicates that the speed is too slow.          
Most organic and inorganic materials can be used as laser cutting machine. Compared with other traditional cutting methods, laser cutting has obvious advantages compared with other traditional methods. Laser cutting machine has the characteristics of narrow slit, small deformation of the workpiece and high speed, high efficiency, low cost, safe operation, stable performance and so on.

The essential difference between the four types of laser cutting technology

The essential difference between the four types of laser cutting technology
Laser cutting is irradiated materials rapidly melting, vaporization and ablation or achieve ignition, with high power density laser beam irradiating a work, at the same time with coaxial with the beam of high speed airflow blow in the molten material, so as to realize the workpiece cut. Laser cutting is one of the hot cutting methods.
Laser cutting can be divided for laser vaporization cutting, laser fusion cutting, laser oxygen cutting and laser scribing and breaking control four categories.

1.Laser vaporization cutting
Using high energy density of laser beam heating the workpiece, so that the temperature rose rapidly, in a very short period of time to reach the boiling point of the material, the material began to vaporization, the formation of steam. The steam jet is very large, and in the same time, it forms a notch on the material. The vaporization heat of the material is generally very large, so the laser vaporization cutting requires a great deal of power and power density.
Laser vaporization for cutting thin metal materials and nonmetal materials. (such as paper, cloth, wood, plastic, rubber, etc.)

2.Laser melting and cutting
Cutting laser melting and laser heating to melting of metal materials, followed by blowing a non oxidizing gas (AR, he, N, etc.) and beam coaxial nozzle, gas rely on the strong pressure of the molten metal is discharged, the formation of incision. Laser melting and cutting does not require the complete vaporization of the metal, the energy required for vaporization of the 1/10.
Laser melting and cutting are mainly used for the cutting of materials or active metals, such as stainless steel, titanium, aluminum and its alloys.

3.Laser oxygen cutting
The principle of laser oxygen cutting is similar to that of oxygen acetylene cutting. It uses a laser as a heat source, with oxygen and other active gas as the cutting gas. On the one hand, the injection of the gas and the cutting metal, the oxidation reaction, the release of a large number of oxidation heat; on the other hand, the molten oxide and melt blown out from the reaction zone, the formation of the incision in the metal. Because of the oxidation reaction in the cutting process produces a lot of heat, so the energy required for laser oxygen cutting is only the melting of 1/2, and the cutting speed is much larger than the laser vaporization cutting and melting cutting.
Laser oxygen cutting is mainly used for metal materials and heat treatment of carbon steel, titanium steel oxidation.

4.Laser scribing and breaking control
Laser scribing is the high energy density of laser scanning on the surface of brittle materials, the material is heated to evaporate a small groove, and then applying a certain pressure, brittle materials will be along the slot at the split. Laser laser scribing generally used for Q switch and CO2 lasers.
The control fracture is the steep temperature distribution generated by the laser engraving, which produces the local thermal stress in the brittle material, which causes the material to be broken along the small groove.

Copy from JINAN XIAOJIA CNC MACHINERY EQUIPMENT CO.,LTD
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Safe operation of laser cutting machine

Safe operation of laser cutting machine

When laser cutting machine working,the failure is dangerous.Novice must undergo professional training in order to operate independently, the following to learn the 13 details of laser cutting machine safety work. 

1.Please follow the general cutting machine safety operation rules.Please start the laser in strict accordance with the laser start procedure. 

2.The operator must be trained to be familiar with the structure and performance of the equipment, and to master the relevant knowledge of the operating system. 

3.Wear good labor protective equipment according to regulations, must wear the protective glasses in line with the provisions in the vicinity of the laser beam.

4.Pls don't working the material when be not sure if it is suitable for laser,invoide producing the harmful fumes and vapors.

5.Operator is not allowed to leave the position when the equipment is running, if need to leave, please stop or cut off the power switch. 

6.Please put fire extinguishers in your fingertips; stop processing, please turn off the laser or optical gate; do not put paper, cloth or other flammable substances in the unprotected laser beam around.

7.When the abnormal appearance in the processing process, should be immediately shut down, in a timely manner to eliminate the failure or reported to the competent personnel. 

8.Keep the laser, bed and around the site clean and orderly, no pollution, waste, according to the provisions of the workpiece, sheet piling. 

9.When using gas cylinders, should avoid crushing welding wire, so as to avoid leakage accident. The use of gas cylinders, transport should comply with the rules of gas cylinders. The ban of gas cylinders in the sun or near the heat of the sun. When the valve is opened, the operator must stand on the side of the bottle mouth. 

10.Please observe the high pressure safety rules when repare laser machine.Follow the rules and procedures for 40 hours or one week per operation, 1000 hoursor six months of maintenance. 

11.After the boot, please first manual low speed Y, X direction of the machine, check to confirm whether there is abnormal situation. 

12.The new work program input, please try to run, and check its operate situation. 

13.During the work, observe the operation of the machine, so as to avoid the cutting machine out of the effective range or two sets of collision caused the accident.

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Fiber laser cutting machine is not a panacea, pls don't cut these materials with it

Fiber laser cutting machine is not a panacea, pls don't cut these materials with it
 

Many people believe that the fiber laser cutting machine belongs to the cutting machine category, and adopt imported laser, cutting range should be very wide, the effect should be much better than the other way, actually otherwise, cutting machine also are in special types, each cutting machine has his advantages and disadvantages.The following are analyzed in detail.

First, fiber laser cutting machine belongs to metal laser cutting machine processing category, so only for cutting metal, which cannot be cut fabrics, leather, stone etc. nonmetal, the reason is very simple, fiber laser cutting machine in the wavelength range not within the absorption range, or ceiling are not suitable, amounting to less than the desired effect of cutting, at present,
application in non metal cutting edge is not very obvious, of course does not preclude later with development needs in this regard.

Secondly, we don't recomend fiber laser cutting machine cut aluminum, copper and this type materials in long-term,because these materials belong to high reflective material (Note: high reflective sheet with the cutting surface smooth degree of concern is not big, mainly due to the wavelength of the laser not in these materials ideal absorption range, absorption effect is not good, most of the energy is reflected back, easy to damage protection lens in front of the laser head), the cutting effect is not good in long-term working . It will also increase the usage of consumables;

Finally,with the different power of fiber generotor,the cutting thickness is also different.The more power,the cutting thickness is more.And cutting thin metal,the speed is faster.Fiber laser cutting machine is very obvious for thin sheet cutting edge.

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What auxiliary gas can be used laser cutting?

What auxiliary gas can be used laser cutting?

Laser cutting machine can use the auxiliary gas when cutting, mainly oxygen, nitrogen, air and argon, and the following we will introduce its use and characteristics for different auxiliary gases.

1.Atmosphere

Air can be supplied directly from the air compressor, so the price is very cheap compared with other gases. Although the air contains about 20% of the oxygen, but the cutting efficiency is far less than oxygen, cutting capacity and nitrogen. The cutting surface will appear micro film, but it can be used as a measure to prevent the film from falling off. Cut end face yellow.
The material is mainly applicable to aluminum, aluminum alloy, stainless steel, brass, galvanized steel, non metal and so on.

2.Nitrogen

Some times,when we cut some metal material,the cutting surface will form oxide film,adopt nitrogen can invoide the oxide film.The non oxidation cutting mask has the characteristics of direct welding, coating, corrosion resistance and so on. Cut face is white.
The main application of the plate are stainless steel, galvanized steel, brass, aluminum, aluminum alloy, etc.

3.Oxygen

Mainly used for cutting carbon steel in laser cutting machine. Using oxygen reaction heat large format improve cutting efficiency at the same time, resulting in the oxide film can improve the reflective material beam spectrum absorption factor. Cut face is black or dark yellow.
Is mainly used for rolling steel, solution and connecting structure of rolled steel, mechanical structure with carbon steel, high tension version, tools in, stainless steel, galvanized steel, copper and copper alloys.

4.Argon

Argon is inert gas, used in the laser cutting machine to prevent oxidation and nitriding, also used in welding, compared with other processing gas, the price of Japonica rice, the corresponding increase in cost. Cut face is white.

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3 focus of laser cutting machine

3 focus of laser cutting machine

1.Cutting focus is above the material

This way we are also known as the negative focal length, because the cutting point is not located in the surface of the cutting material is not located in the inside of the cutting material, but positioned at the top of the cutting material. This method is mainly used in the material with high cutting thickness. This approach is focused on the cutting material, mainly because of the need to cut a large plate, otherwise the nozzle delivery of oxygen is extremely prone to lead to problems and the resulting cut temperature. But one drawback of this approach is that the cutting surface is rough and less practical for the cutting of high precision.

2.Cutting focus is in material

This way is also known as the positive focal length. When you need to cut the workpiece for the stainless steel or aluminum plate when the cutting point in the workpiece inside the model. But one drawback of this approach is that, due to the focus principle of cutting surface, the cutting surface of the workpiece is larger than the cutting point at the same time, and this mode requires the cutting gas flow to be large, the temperature should be sufficient, and the time of cutting is slightly longer. So when you choose the material of the workpiece is mainly for stainless steel or aluminum lamp of the material selection of high hardness.

3.Cutting focus is on surface of material

This method is also known as the 0 focal length, usually in the SPC, SPH, SS41 and other parts of the cutting, the use of the cutting machine is used to focus on the workpiece surface, which is not the same as the upper and lower surface of the workpiece surface smooth, generally close to the focus of the cutting surface is relatively smooth, and far from the cutting of the lower surface is rough. This model should be based on the actual application of the upper and lower surface of the process requirements and set.

To sum up, we should use different focus mode when cutting different material or parts, can more play the performance advantages of laser cutting machine.

Advantages of laser cutting machine in the shipping industry

Advantages of laser cutting machine in the shipping industry

There are four main types of ship hull plate parts, which are flame cutting, plasma cutting, cutting and laser cutting.
1.Equipment performance comparison
The cutting performance of the flame cutting machine can be carried out by the cutting machine. The plasma cutting machine is fast and the cutting machine has high efficiency, but it can only be limited to the machining of the linear side parts. But the cutting plate speed is relatively slow. It is due to the advantages of high precision, laser cutting machine in high sheet product construction, block construction process without allowance precision management, build merchant ships of welding groove line of demanding process: such as FCB puzzle, double wire submerged 4 arc automatic welding and other aspects, has irreplaceable advantages, the laser cutting machine is to change the smooth implementation of the method has laid an important foundation.

The comparison of the parameters of the laser cutting machine and the other two kinds of cutting equipment is listed:
Application of laser cutting machine in the actual production of shipping industry
Through comparison of the performance of laser cutting equipment and other equipment, the main advantages of the laser cutting equipment are cutting high precision and small thermal deformation. This feature has a broad application prospect in the practical production.
There is no allowance for advancing the process of building a new high tech ship
High precision requirements for ship hull zhuanpei high frame, zhuanpei gap must be controlled in the range of 1mm. In a bottom part EB02 for example, formerly in the plasma of floor plate material, in order to ensure the assembly gap, in the coal floor are set to mow the margin (as shown in the following picture), the allowance of the ribbed plates are is in the field assembly manual to mow, mow the quality parameter difference not neat inner slotted oxides are not clear and easy to, but also increase the workload of the assembly, assembly cycle of growth, resulting in the block construction period is prolonged. Using laser cutting machine to improve the accuracy of parts, in the relative to cancel the assembly margin, the structure of the assembly speed is significantly accelerated. The assembly quality of the whole block is improved obviously, and the precision of the construction is also improved at the same time. The fact proves that the more accurate parts are good for the main dimensions of the segmented.
Promote the change of thin plate cutting
Section thin-walled superstructure construction division is an important part of the whole high engineering hull construction, the thinnest thickness coaming of only 2mm; in the superstructure segment in the process of the construction, expect from the next parts manufacturing, block manufacturing, total group equipped with a series of processes are in the hands of the process, thin wall plate is very easy to lose stability deformation. So section thin-walled superstructure construction of each process are key control, and it is the introduction of laser cutting machine, promote the thin-walled material engineering change. To ensure the quality of the construction of the sub construction.
Before the introduction of laser cutting machine, the cutting of the 2-3mm cutting of the sheet is mainly through the manual line. Through Zhaping were leveling; artificial marking and shear cumulative error in 3mm, resulting in in wall imposition assembly of ultra poor gap, unable to realize the assembly gap in the range of 1 mm requirements, tend to have a lot of modification cutting phenomenon; and for 4 6mm steel plate, using ion cutting, because of the thin sheet metal, the cutting heat, steel plate edge straightness is not up to the requirements, after cutting Zhaping, still need the edge planing machine for edge processing, an increase of machining process.
To the Ministry of loading stage, there are a large number of wall due to the material error or scrap or rework, and in the sub wall assembly, the wall edge potential repair or assembly gap is endless, and the material is not used in the cutting machine before the material scrap rate is high. Introduction of laser cutting machine thick, it is using its high processing precision, small heat input, all thin wall are used laser cutting and blanking, step in place, eliminating the need for the lineation, Zhaping, planing process; to eliminate the problems caused by plate's loss, greatly improve the processing efficiency.
It is clear that the use of laser cutting machine for thin plate cutting is a process of change. Greatly improve the efficiency and quality of the thin wall segment processing.
In short, laser cutting machine as a new type of hull parts cutting equipment, compared with other conventional cutting equipment, with high machining accuracy, small thermal deformation, good stability, low loss rate, small environmental pollution and other advantages, in the shipbuilding industry has great potential for application. Currently in in section of high ship building without remainder, sheet cutting method change has good application, greatly improving the processing efficiency, eliminating the on-site repair cut phenomenon, reduce the labor and material waste. The advantage of laser cutting machine will be wider and deeper application in ship manufacturing.

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Teach you how to easily distinguish the quality of laser cutting machine

Teach you how to easily distinguish the quality of laser cutting machine

1.Roughness

Laser cutting section will form the vertical lines, the depth of the lines determines the cutting surface roughness, the more shallow the lines be, the more smooth cut section be.Roughness not only affects the appearance of the edge, but also affects the friction characteristics, in most cases, we need to minimize the roughness, so the more shallow, the higher the quality of cutting.

2.Verticality

If the sheet metal thickness is more than 10mm, the verticality of cutting edge is very important. Away from the focus, the laser beam becomes divergent, based on the focus of the position, cutting toward the top or bottom of the width. When the cutting edge deviates from the vertical line of a few millimeters, if the edge is more vertical, the cutting quality is better.

3.Cutting width

Generally cutting width does not affect the cutting quality, cutting width is important only cutting special precision contour in internal parts of components, Because the cutting width determines the minimum of the outline, When the thickness of the plate increases, the cutting width increases. So if you want to ensure that the same high accuracy, regardless of the width of the cut, the workpiece in the laser cutting machine processing area should be constant.

4.Lines

When the high speed cutting plate, the molten metal will not appear in the vertical laser beam below the cut, but will be in the laser beam to spray out. As a result, the curved lines are formed in the cutting edge, and the lines follow the moving laser beam closely. In order to fix this problem, the feed rate can be cut down at the end of cutting.

5.Burr

Burr formation is a very important factor to determine the quality of laser cutting. Because the removal of burr is an additional workload, so the amount of the amount of burr is very serious and the quality of the cutting can be judged visually.

6.Material deposition

The special liquid of a layer of oil on the surface of the workpiece prior to the melting of the perforation. Laser gasification process, the upward or downward discharge will be formed on the surface of the deposition.

7.Sag and corrosion

Depression and corrosion have a negative effect on the surface of the cutting edge. They appear in general this should be avoided in the cutting error.

8.Heat affected zone

In laser cutting, the area near the notch is heated. At the same time, the structure of the material changes. For example, some of the material will harden. Heat affected zone refers to the depth of the region of the internal structure change, the smaller the better.

9.Deformation

If the cutting causes the parts to be heated rapidly, it will deform. This is particularly important in the fine processing, because the contour and the connecting piece is usually only a few millimeters wide. Controlling the laser power and the use of short laser pulses can reduce the heat of the part and avoid the deformation.

Of course, just look at the effect of cutting materials nor each material are suitable, such as you get very poor material, The effect of cutting for each machine is not good, as another example, you take some not suitable for laser cutting of materials may not be able to conclude. We recommend that the materials are: acrylic, organic glass, ABS and other materials

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Laser cutting machine or numerical control punch, the five big difference tell you which is the most suitable for you?

Laser cutting machine or numerical control punch, the five big difference tell you which is the most suitable for you?

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Jinan Xiaojia CNC Machinery Equipment Co.,Ltd

Today, with the requirements of the market to the rapid replacement of product requirements, the flexibility of the processing equipment to put forward higher requirements. And the application of laser cutting machine, bring the new vitality of the processing industry. Compared with the traditional CNC punch, laser cutting machine has the advantages of 3C, 3S: cool, clean, calm, sure,savety,saving, but in the whole process on the market, laser cutting machine and CNC punching bed have equal shares,  why? Then the following small series of knowledge, so that we understand the laser cutting machine and CNC punch.

First, processing materials

Laser cutting machine can cut metal materials (including black metal, non-ferrous metals, such as carbon steel, stainless steel, silicon steel, galvanized sheet, aluminum alloy,...) , non metal materials (acrylic, plastic, wood, cloth, leather, carpets and other materials). Carbon steel with a thickness of 20mm.
Numerical control punch can only be made of metal materials, the thickness is generally not more than 6mm.
Second, processing flexibility

From the perspective of flexibility, laser cutting machine has advantages, can cut any shape, size of holes, and punch can only cut a few specifications of the hole (32 position of the turret is large), in case of large size hole, the use of small die stamping process, efficiency is low, mold wear seriously.In order to meet the needs of different products processing, CNC punch must be purchased a lot of molds (different sizes, the same size but for different thickness of the material), further, it is necessary to prepare a warehouse for the storage, and increase the demand for mold management. In addition, numerical control punch on the flatness of the plate, the surface cleanliness requirements higher.

Third, accuracy, roughness

Laser cutting machine belongs to non-contact processing, no stress, no deformation, positioning accuracy of 0.03mm, the workpiece accuracy is 0.1mm, the cutting section is smooth and smooth, the machining accuracy of the numerical control punch is slightly worse.

Forth, efficiency, cost

The original use of a factory press + cutting machine, cutting plate machine after the need to transfer to the punch, compared with laser cutting machine, need more manual.
Comprehensive comparison of the laser cutting machine (3kW fiber laser) and the cost of the punch: power, supplies (laser cutting machine material is the focus lens, ceramic body, nozzle, mirror, gas, etc., the material is a mold, etc.), artificial, equipment depreciation, the result is that the laser cutting machine costs RMB179 yuan / hour, punch RMB174 yuan / hour.
In view of the factory products(Metal, thickness 1.5 ~ 3mm) for processing efficiency estimation, the result is that the use of laser cutting machine is only 0.2 hours, and the use of 0.7 hours.
Obviously, laser cutting machine has obvious advantages in efficiency and cost.
Of course, if the product is large, the use of special design of the mold (such as the porous mold, but this will damage the flexibility), it can improve the efficiency of the numerical control punch, until the laser cutting machine.

Fifth, function, limitation
Laser cutting machine and CNC punch press have their own limitations. If need to achieve blinds, stretching, sink hole, hole flanging, strengthen tendons, stamping process, it is only used CNC punch press; and for saw blade with silencing seams, only the laser cutting machine can perform.