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3D laser cutting tips

Traditional cutting methods include flame cutting, plasma cutting, water jet cutting, wire cutting and punching. Laser cutting is an emerging process in recent years. It is to irradiate a laser beam with a high energy density onto the workpiece to be processed. The part is melted by heat, and then the slag is blown off by a high pressure gas to form a slit.


The so-called three-dimensional fiber laser cutting machine is an advanced laser cutting device for multi-angle and multi-directional flexible cutting of metal sheets of different thickness by special fiber laser cutting head, high-precision capacitive tracking system, fiber laser and industrial robot system.


At present, three-dimensional laser cutting is widely used in sheet metal processing, metal processing, advertising production, kitchen utensils, automobiles, lamps, saw blades, elevators, metal crafts, textile machinery, grain machinery, aerospace, medical equipment, instrumentation and other industries. In particular, it has replaced traditional processing methods in the sheet metal processing industry and is favored by industry users.

3D laser cutting

I will encounter some problems in daily use. Here are some things to share with you:


Why does the robot 3D laser cutting machine have different cutting quality when cutting the same workpiece? The effect of cutting the straight line or the big side is good, but the effect is much worse when cutting the corner or the small hole. In severe cases, there will be scraping phenomenon?


Robot structure reasons


The mechanical structure of the six-axis manipulator is a six-axis series structure, and the speed reducers of each of the six axes have accuracy errors.


When the manipulator takes a straight trajectory, the angle of the six-axis transformation is small, so the quality of the cutting is good, and the quality of the circular trajectory or some of the large-angle transformations is significantly reduced.


Robot torque cause


Why different cut quality of different poses have different effects, because the problems of the arm and the load cause different lengths of the arm of different postures, so different cutting effects will occur.


3D laser cutting machine debugging




Improve the cutting process (cutting material, speed, gas pressure, gas type, etc.)


Generally, the robot stays at the corner of the arc when the apex of the arc is longer. In this case, we generally use the speed reduction, power reduction, real-time adjustment of the air pressure, and the speed reduction to reduce the robot shake. The power is reduced to reduce overburning. The upper air pressure is adjusted in real time with the real-time adjustment of the speed power, so the problem of corner overburning can be improved very well. If it involves different materials such as carbon steel, stainless steel, aluminum, etc., we can solve different problems by adding high pressure proportional valves and other related accessories. The pressure of the cutting plate is adjusted in real time.


Work hard on tooling


Do the right tooling for the specific workpiece. Do not place the tooling at the limit of the stroke. Place the workpiece cutting path as much as possible in the position where the robot can "comfort" cut. In addition, the cutting of some pipe fittings or holes allows the workpiece to rotate while the robot remains. Do not move or move less.


Adjust robot gesture


The operator should adjust the attitude of the robot through "manual teaching" and reasonably distribute the angle of rotation of each axis. For the position of the robot with high precision requirements, the posture of the robot should be as "comfortable" as possible, and the axis to be linked when cutting should be as small as possible.

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