What is CNC Plasma Cutter and How Does it Work?
Definition
The CNC plasma cutter refers to the workpiece command (or program) used to control the machine tool or equipment. It is a new control method given in digital form. When this instruction is provided to the control device of the CNC automatic cutting machine, the cutting machine can automatically perform cutting according to a given program. CNC cutting is composed of two parts: CNC system and mechanical frame.
Compared with traditional manual and semi-automatic cutting, CNC cutting uses the cutting technology, cutting process and automatic control technology provided by the numerical control system, that is, the controller, to effectively control and improve the cutting quality and cutting efficiency. CNC cutting: It is an exponentially controlled flame, plasma, laser and water jet cutting machine. According to the optimized nesting cutting program provided by the CNC cutting nesting software, it performs full-time, automatic, efficient, high-quality and high-utility CNC cutting. CNC cutting represents a modern high-tech production method, which is a product of advanced optimized nesting calculation technology combined with computer numerical control technology and cutting machinery.
Types
Gantry, cantilever, desktop, portable.
Gas Source
Argon, hydrogen, nitrogen, oxygen, air.
Working Principal
The plasma cutting machine is combined with an automatic numerical control system, which uses high-temperature high-speed air jets sprayed at the nozzle to ionize, thereby forming a conductor. When the electric current passes, the conductive gas forms a high-temperature plasma arc. The heat of the arc locally melts (and evaporates) the metal at the cut of the workpiece, and a method of processing to remove the molten metal by the power of the high-speed plasma gas flow to form the cut. The slender and stable plasma arc formed by the circular airflow technology ensures that any conductive metal can be cut smoothly and economically.
Applications
CNC plasma cutters are commonly used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, steel construction, etc. Plasma cutting machines are mainly used in the cutting of metal plates, including some other equipment that can not cut. It can be used under various conditions and can be used for various types of metal materials, including stainless steel, alloy steel, carbon steel, copper, and other non-ferrous metal materials.
For those materials that are difficult to cut by traditional methods, it can be done by a CNC plasma cutting table. In addition, in terms of cutting speed, when cutting small thickness ordinary carbon steel sheets, the plasma cutting speed is several times faster than the traditional oxygen cutting speed. At the same time, the cutting surface remains smooth and the thermal deformation is better. The quality of the cutting parts of the CNC plasma table has a very important influence on the quality of the product. It is of great value to optimize the cutting path scientifically and reasonably.
Benefits and Advantages
CNC plasma cutter has many advantages such as simple operation, high accuracy, high work efficiency, low labor intensity, etc. It is widely used in many kinds of processed parts.
1. Wide cutting area, can cut all metal plates;
2. The cutting speed is fast and the efficiency is high, the cutting speed can reach more than 10m/min;
3. The cutting precision is higher than flame cutting, underwater cutting without deformation, fine plasma cutting is more accurate.
Features
1. Advanced plasma special CNC system, fully off-line work, humanized operation.
2. Fast data transmission, using the advanced USB interface to work offline, without occupying computer resources.
3. Various software is compatible.
4. The efficient and worry-free operation, with power failure, continued engraving at the breakpoint, prediction of processing time, automatic tool setting.
User Guide
Operators perform operations in the following order of switching on and off each day:
1. Start the air compressor and air dryer.
2. Start the machine tool control cabinet; start the plasma power supply.
3. After setting all parameters, start the program to cut.
4. After the work is completed, turn off all power and air sources.
Safety Rules
1. Operators must wear protective masks, welding gloves, hats, filter dust masks, and soundproof earmuffs. Persons who are not wearing protective glasses are strictly prohibited from directly observing the plasma arc, and bare skin is strictly prohibited from approaching the plasma arc.
2. When cutting, the operator should stand upwind. The air can be drawn from the lower part of the workbench, and the open area on the operation desk should be reduced.
3. When cutting, when the no-load voltage is too high, the grounding, zero connection and torch handle insulation of the appliance should be checked, the workbench should be insulated from the ground, or no-load circuit breakers should be installed in the electrical control system.
4. The high-frequency generator should be equipped with a shielding shield. After starting the arc with high-frequency, the high-frequency circuit should be cut off immediately.
5. The use of thorium and tungsten electrodes should comply with legal regulations.
6. The cutting operation and cooperating personnel must wear labor protection articles as required. Safety measures must be taken to prevent accidents such as electric shock, falling from high altitude, gas poisoning and fire.
7. The welding machine used on site should be equipped with a rainproof, moisture-proof and sun-proof shed, and corresponding fire-fighting equipment should be installed.
8. When welding or cutting at high altitudes, safety belts must be fastened, and fire protection measures should be taken around and below the welding and cutting, and there should be special personnel supervision.
Prospects
Due to the advantages of high cutting speed and good cutting quality of the CNC plasma cutting machine, it will replace some of the manual plasma cutting, artificial flame cutting machine and CNC flame cutting in the near future.
