Computer-controlled cutting
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Laser cutting machine safe operation precautions
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1.Learn how to keep safety
1. Comply with the general cutting machine safety operating procedures, should be in strict accordance with the laser starting procedure to open the laser cutting machine;
2. The operation of the laser cutting machine should be professionally trained and familiar with the structure, performance, operation process and control panel of the equipment;
3. Wear the protective equipment required for the operation of the machine according to the regulations, and avoid the damage caused by the laser on the eyes during operation, and wear protective glasses;
4. Some materials need to be handled carefully, and do not process at will before it is clear whether some materials can be produced by laser cutting machine, so as to avoid toxic fumes and potential dangers;
5. When the equipment is working, the operator shall not leave the work post or be taken care of without permission, and should be powered off or shut down;
6. Fire extinguishing facilities should be placed within reach, and the laser or optical brake should be turned off after the processing is completed;
7. Do not place flammable materials such as paper and cloth around the machine studio to prevent fire;
8. The operator is required to have the ability to respond to emergencies. If abnormal conditions occur during processing, the machine should be shut down immediately and troubleshooting or repair in time.
9. Before and after the laser cutting machine is used, the equipment should be checked to ensure the surrounding environment of the machine and its own safety and specifications, so as to facilitate the machine to work;
10. When using the gas cylinder, the welding wire should be avoided, resulting in leakage. The use and transportation of gas cylinders shall comply with the regulations for the supervision of gas cylinders. The gas cylinder should avoid exposure to the sun and placed near the fire source, and the operator should stand on the side of the nozzle when activated to avoid accidents;
11. When the equipment is repaired, it should be operated in strict accordance with the high-pressure safety regulations;
12. After starting the machine, manually start the machine in the X and Y directions at low speed to check whether the equipment is abnormal;
13. After the input of the new workpiece program, a trial run should be done and its operation should be checked;
14. The equipment should pay attention to the stability of the machine when working, and should check whether the machine is fixed in advance to avoid the occurrence of slippage collision;
15. Equipment should be regularly maintained, daily, weekly, monthly, every six months should be carried out large and small maintenance and maintenance.
2.Learn different kind of material which can be manufacture by laser cutter
Metal is the most commonly used material for laser cutting. This is due to characteristics such as durability, strength and customisability. In general, laser cutting is suitable for all metals. However, characteristics such as thickness and reflection characteristics can affect the viability of the cutting process. Thick metals require very powerful laser cutting. In addition, reflection characteristics are a limiting factor for laser cutting. Therefore, metal laser cutting materials with reflective characteristics are more difficult to cut sheet metal processing.
1.The process starts with a CAD (Computer Aided Design) file that contains the exact dimensions and specifications of the required components. For example, use the most appropriate vector CAD file format AI, EPS, SVG, EPS, DXF and most other laser control software support.
2.Export the CAD file and then load it into a computer-controlled laser cutting machine to guide the laser beam onto the surface of the metal plate.
3.The laser beam is generated by a powerful laser source, such as a CO2 or fiber laser, that heats the metal to the melting point, effectively cutting the material along the programmed path.
4.The intense heat of the laser beam then ensures a clean, precise cut while minimising deformation or thermal damage to the surrounding material.
Laser cutting is a multifunctional process that can be used to cut a variety of metals of different thicknesses. Some metals that are commonly cut using laser cutting technology include:

1. steel
Laser cutting is very effective for cutting various types of steel, including carbon steel, stainless steel and alloy steel. It can precisely cut steel plates from thin to thick. Laser cutting is particularly suitable for cutting stainless steel due to its ability to make clean, high-quality cuts with minimal heat-affected zones. Stainless steel is commonly used in industries such as food processing, medical devices and automotive manufacturing, where precision and hygiene are critical.











2. aluminum
Aluminum is another popular laser cutting metal due to its light weight, corrosion resistance and versatility. Laser cutting can be used to cut aluminum sheets of different thicknesses, making them suitable for applications such as aerospace components, signage and building elements.

3. copper
Cutting copper has traditionally been challenging using laser technology due to its high reflectivity and thermal conductivity, but advances in laser technology have made it possible to cut copper accurately and efficiently. Laser cutting is commonly used to manufacture copper components in the electronics, telecommunications and electrical industries.

4: Brass
Laser cutting is also suitable for cutting brass, a popular copper-zinc alloy known for its attractive appearance and corrosion resistance. Brass is commonly used in architectural applications, decorative elements, and Musical Instruments that require complex design and precise cutting.

5. Nickel alloy
Laser cutting is capable of cutting nickel alloys such as Inco and Monel alloys, which are known for their high temperature and corrosion resistance. These alloys are commonly used in aerospace, chemical processing, and Marine applications that require precise machining and manufacturing.
How does a laser cut
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CNC
Introducing CNC

http://baike.baidu.com/l/ckUEPpWc

CNC machine tool is the abbreviation of computer numerical control machine tools, which is an automatic machine tool equipped with a program control system. The control system can logically process the program specified with control code or other symbolic instructions, and decode it, represent it with coded numbers, and input it into the numerical control device through the information carrier. After calculation and processing, various control signals are sent by the numerical control device to control the action of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing.
Technology application

CNC machine tool is an automatic machine tool equipped with a program control system, which can make the machine tool move and process parts according to the programmed program. It integrates the latest technologies such as machinery, automation, computer, measurement, microelectronics, etc., and uses a variety of sensors, and the sensors used in CNC machine tools mainly include photoelectric encoders, linear gratings, proximity switches, temperature sensors, Hall sensors, current sensors, voltage sensors, pressure sensors, liquid level sensors, resolvers, inductive synchronizers, speed sensors, etc., which are mainly used to detect position, linear displacement and angular displacement, speed, pressure, temperature, etc.

1. The requirements of CNC machine tools for sensors
1) High reliability and strong anti-interference;
2) Meet the requirements of precision and speed;
3) Easy to use and maintain, suitable for the operating environment of the machine tool;
4) Low cost. Different types of CNC machine tools have different requirements for sensors, generally speaking, large machine tools require high speed response, and medium and high-precision CNC machine tools mainly require precision.

2. Application of induction synchronizer
The inductive synchronizer is made by using the principle that the mutual inductance of two planar windings changes with different positions. Its function is to convert angular or linear displacement into the phase or amplitude of induced electromotive force, which can be used to measure linear or angular displacement. According to its structure, it can be divided into two types: linear type and rotary type. The linear induction synchronizer is composed of two parts: a fixed length and a sliding rule, the sliding ruler is installed on the machine tool bed, and the sliding rule is installed on the moving parts and moves together with the workbench; The stator of the rotary induction synchronizer is a fixed disc, and the rotor is a rotating disc. The inductive synchronizer has the advantages of high accuracy and resolution, strong anti-interference ability, long service life, simple maintenance, long-distance displacement measurement, good manufacturability, and low cost. Rotary induction synchronizers are widely used in rotary tables for machine tools and instruments, as well as in various rotary servo control systems.
Conventional machine tools
Peculiarity

1. Strong adaptability to the processing object, adapt to the characteristics of single piece production of molds and other products, and provide a suitable processing method for the manufacture of molds;
2. High processing accuracy and stable processing quality;
3. It can carry out multi-coordinate linkage and process parts with complex shapes;
4. When the processed parts are changed, generally only need to change the CNC program, which can save production preparation time;
5. The machine tool itself has high precision and rigidity, and can choose a favorable processing amount and high productivity (generally 3~5 times that of ordinary machine tools);
6. The machine tool has a high degree of automation, which can reduce labor intensity;
7. It is conducive to the modernization of production management. CNC machine tools use digital information and standard code to process and transmit information, and use computer control methods, which lays the foundation for the integration of computer-aided design, manufacturing and management;
8. The quality requirements for operators are higher, and the technical requirements for maintenance personnel are higher;
9. High reliability.

CNC machine tools compared to traditional machine tools

1. It is highly flexible
Machining parts on CNC machine tools, mainly depends on the processing program, it is different from ordinary machine tools, it does not have to be manufactured, many molds, fixtures are replaced, and there is no need to readjust the machine tool frequently. Therefore, CNC machine tools are suitable for the frequent replacement of processed parts, that is, suitable for the production of single pieces, small batches of products and the development of new products, thereby shortening the production preparation cycle and saving a lot of process equipment costs.
2. High processing accuracy
The machining accuracy of CNC machine tool can generally reach 0.05-0.1mm, CNC machine tool is controlled in the form of digital signal, CNC device outputs a pulse signal every time, then the moving parts of the machine tool move a pulse equivalent (generally 0.001mm), and the reverse clearance of the machine tool feed transmission chain and the average error of the screw pitch can be compensated by the CNC device, therefore, the positioning accuracy of CNC machine tool is relatively high.
3. The processing quality is stable and reliable
Processing the same batch of parts, in the same machine tool, under the same processing conditions, using the same tool and processing program, the tool trajectory is exactly the same, the consistency of the parts is good, and the quality is stable.
4. High productivity
CNC machine tools can effectively reduce the machining time and auxiliary time of parts, and the spindle sound velocity and feed range of CNC machine tools are large, allowing machine tools to carry out powerful cutting with large stock removal volumes. CNC machine tools are entering the era of high-speed machining, and the rapid movement and positioning of moving parts of CNC machine tools and high-speed cutting processing have greatly improved productivity. In addition, when used in conjunction with the tool magazine of a machining center, it is possible to perform continuous processing of multiple processes on a single machine, reducing the turnaround time between processes of semi-finished products and improving productivity.
5. Improve working conditions
Before the CNC machine tool is adjusted, the program is entered and started, and the machine tool can be automatically and continuously processed until the end of processing. What the operator has to do is only the input of the program, editing, parts loading and unloading, tool preparation, observation of processing status, inspection of parts, etc., the labor intensity is greatly reduced, and the labor of the machine tool operator tends to be intellectually oriented. In addition, machine tools are generally combined, both clean and safe.
6. Modernize production management
The processing of CNC machine tools can accurately estimate the processing time in advance, and the tools and fixtures used can be standardized, modernized management, and easy to realize the standardization of processing information, which has been organically combined with computer-aided design and manufacturing (CAD/CAM), and is the basis of modern integrated manufacturing technology


1. CNC milling machine
Numerical control milling machine is a machine that has similarities with numerical control milling machines. However, it is usually used to process softer materials, and its accuracy may be slightly lower than that of CNC milling machines.
A typical CNC milling machine consists of a mechanical base, a power supply, a spindle, a stepper driver, a stepper motor and a controller. Compared with traditional processing methods, CNC milling machines have the advantages of improving productivity, improving accuracy and reducing material waste, so that products can be produced faster.
Similar to CNC milling machines, CNC milling machines are available in a variety of shaft configurations, ranging from three to six axes. Entry-level CNC milling machines typically utilize a 3-axis system to carve the workpiece into the desired shape. In addition, rotary tool accessories (4 axes) can be purchased separately for machining curved workpieces.
CNC milling machines excel at using computer numerical control to mill spindles and machine paths, enabling the ability to work on a variety of materials such as aluminum, steel, plastic, wood, composite materials and foam to achieve the desired final design and shape.
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CNC milling machines are highly versatile machines suitable for cutting complex shapes and are used in a wide variety of applications, including: Carved wood furniture, Decorative, molding, Interior and exterior decoration, Door carving, placard, Musical instrument
2. CNC drilling machine
CNC drilling machines are automatic drilling machines that can punch precise and complex holes in the workpiece. They are equipped with a mechanically rotating drill bit that can penetrate the workpiece radially to create a cylindrical hole. The design of the drill bits causes scrap material (called chips) to fall off the workpiece. There are several types of drill bits available for different applications, including screw machine bits, deep hole bits, centering bits and clamp reamers.
CNC drilling machines automatically control parameters such as spindle speed, feed speed, cut rate and depth of cut based on instructions provided by the CNC programmer. These machines can process materials at much higher speeds than traditional manual drilling techniques. These machines are equipped with intelligent tool exchange and positioning technology that helps increase productivity.
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CNC drilling machines are used in various industries, including:
Automobile manufacturing, shipbuilding, spaceflight, Construction machinery, Mold making, Woodworking and furniture making
4. CNC milling machine
CNC milling machines utilize high-speed rotating multi-point cutting tools to precisely remove material from workpieces that are usually held in place to form the desired shape.
5. CNC plasma cutting machine
CNC plasma cutting machines provide precise cutting. It does this by utilizing a discharge arc, similar to a plasma torch, that ionizes the air and melts the material at the point of contact with the arc.
6. CNC laser cutting machine
CNC laser cutting machines and CNC plasma cutting machines have similar ability to cut tough materials. However, unlike plasma cutters that utilize ionized gas, CNC laser cutters use highly focused laser beams.
7. CNC discharge processing machine
Numerical control discharge machines (EDMs), often referred to as spark CNC machines, use electrical sparks to manipulate and shape materials. This EDM process can also be called wire burning, die opening, spark machining or spark corrosion.
8. CNC grinding machine
CNC grinding machines use abrasive tools to achieve smooth and precise finish of processed products. It is commonly used in drive shafts, camshafts, ball bearings and other workpieces that require a precise and polished surface.
13. CNC bending machine
A CNC press brake consists of a computer-controlled press and a die that applies the necessary pressure to bend the workpiece into the desired shape. Primarily used in the sheet metal industry, these machines can accurately bend or crumple sheet metal at pre-programmed angles. In addition, CNC press brakes can also be used to bend metal bars and tubes.
12. Automatic tool change
CNC machine The Automatic Tool Changer (ATC) is a variant of various types of CNC machines. This feature allows for quick and efficient replacement of cutting tools within a CNC machine. It allows for seamless transitions between different types of cutting tools or replacement of damaged or worn tools. The ability to automate the tool change process can increase production speed and minimize machine downtime.
11. 3D printers
CNC machines are known as 3D printers that are used to create three-dimensional workpieces by layering materials based on digital designs or models. To prepare the 3D design, the operator uses CAD software, which is then sliced into 2D layers by CAM software to generate the commands needed to control the printing process.
9. CNC water jet cutting machine
CNC water jet cutting machines, as the name suggests, utilize high-pressure water jets, and in some cases additional abrasives, to efficiently cut a variety of materials. These waterjet cutters can handle both 2D and 3D cuts and are good at cutting high thickness materials.
10. CNC take-and-place robot
In the manufacturing industry, pickup and drop robots have gained widespread popularity because they are specifically designed for repetitive tasks. These CNC machines eliminate the need to manually handle workpieces, reducing human interference and associated risks.
Each step in the CNC machining process has a crucial impact on the final quality and stability of the part. Therefore, controlling the processing process is the key. First of all, it is necessary to develop a scientific process and clarify the operational requirements and quality standards of each step. Secondly, to ensure the accuracy and stability of machine tools, tools, fixtures and other equipment. This includes carrying out regular maintenance and inspection of the equipment, timely replacement of worn parts, and keeping the equipment in good condition. At the same time, it is necessary to optimize the cutting parameters, such as cutting speed, feed rate and cutting depth, to reduce the cutting force, thermal deformation and residual stress, and improve the machining accuracy and stability of the parts.

The choice of materials has an important impact on the quality and stability of CNC machined parts. To choose a material suitable for CNC machining, consider its mechanical properties, thermal stability, corrosion resistance and other factors. At the same time, according to the use and requirements of the parts, choose the appropriate material grade and heat treatment process.
Machine type
3. CNC lathe
The CNC lathe uses a single point cutting tool to remove material from the rotating workpiece and shape it to the desired specifications. Compared with manual lathes, CNC lathes improve the speed and accuracy of finished product manufacturing.
Laser Cutter
3.Make sure the machine ,material
CNC Milling Machine Safety Precautions

1. Wear appropriate protective gear CNC milling machine operators must wear proper protective gear, including safety glasses, ear protectors, and gloves, before starting any work. The gear protects against flying debris, loud noises, and the potential risk of hand injuries.
2. Familiarize yourself with the machine When operating a CNC milling machine before it, it is essential to read and understand the user manual carefully. Familiar with machine operation, control, emergency stop function and maintenance procedures. Operators should be provided with proper training to ensure that they are capable of using the machine.
3. Fix the workpiece and tools Before starting the milling process, be sure to double-check that the workpiece and tool are securely fastened. When the machine is running, loose material can turn into dangerous projectiles, posing a risk to both the machine and the operator.
4. Use the correct speed and feed Look at the specifications of the CNC milling machine to determine the appropriate speed and feed for the material being machined. Using incorrect speeds and feeds can lead to tool breakage, poor surface finish, and potential accidents.
5. Minimize distractions and stay focused When operating a CNC milling machine, it's crucial to minimize distractions and stay focused on the task at hand. Avoid using your phone or engaging in irrelevant conversations, as distractions can lead to mistakes or accidents.
6. Inspect and maintain the machine regularly Perform regular inspections and maintenance of the equipment CNC milling machine to ensure that it is in working order. Inspect for loose parts, damaged cables, and worn tools. Proper maintenance will help prevent breakdowns that can lead to accidents.
7. Do not put your hands inside the machine while it is running Never put your hand inside the machine while it is running, or attempt to remove chips or debris with your bare hands. Use appropriate tools or wait until the machine stops and is considered safe to clean.
8. Use the right machining strategy Follow the recommended machining strategy to minimize the risk of accidents during milling operations. Factors such as toolpath, tool mesh, direction of cut, and depth of cut are considered to ensure safe and efficient operation.
9. Emergency stop Make sure all operators understand where the emergency stop button is and how to use it. In the event of an emergency or any dangerous situation, the operator should know how to stop the machine immediately to prevent further injury.
10. Regular training and safety audits Finally, regular training sessions and safety reviews are conducted to reinforce safe operating practices and address any concerns or issues with operators. Stay up-to-date with the latest safety guidelines and regulations to ensure a safe working environment for everyone involved.
By implementing these safety precautions and staying vigilant, operators can significantly reduce the risk of accidents while using CNC milling machines. Remember, in any machining operation, personnel safety should always be a top priority.