Laser cutting punch cutting perforation technology: any kind of thermal cutting technology, except a few cases can start on the plate edge, generally must be a small hole on the plate.
Earlier in the laser punching compound machine is with a hole punch rushed out of the first, and then begin from the holes by laser cutting.
With no stamping device of laser cutting machine has two kinds of the basic ways of perforation: (
Blasting perforation: (
After continuous laser irradiation, material form a pit in the center, the laser beam and then by coaxial oxygen flow quickly remove the molten material into a hole.
General hole size and thickness, half of the average diameter to thickness, blasting perforation for thicker plate blasting perforation aperture is bigger, and do not round, unfavorable use (on demand higher parts
Such as oil sieve tube)
And can only be used for waste.
In addition due to perforation of oxygen to the same pressure and cutting, splash is bigger.
Pulse perforation: (
Using pulse laser peak power make a small amount of material to melt or vaporize, commonly used as auxiliary air or nitrogen gas, to reduce the make hole expansion with exothermic oxidation, gas pressure is cutting the oxygen pressure is small.
Each pulse laser to produce only a small particle injection, gradually thorough, so thick plate punch time takes a few seconds.
Once the perforated completion, auxiliary gas into oxygen cutting.
This perforation diameter smaller, the perforation quality is better than that of blasting hole.
For the use of laser should not only have high output power;
Even more important when time and space characteristics of beam of light, so the general crosscurrent CO2 laser can not adapt to the requirements of laser cutting.
In addition, the pulse perforation also need to have a reliable pneumatic control system, so as to realize the switch of the gas type, gas pressure and aperture time control.
In the case of using pulse perforation, in order to obtain high quality of incision, from workpiece resting pulse perforation to the transition of workpiece speed continuous cutting technology should take seriously.
In theory usually change accelerating period of cutting conditions: such as focal length, position of nozzle, gas pressure, but in fact, due to the time is too short to change the above conditions is unlikely.
Mainly used in industrial production change of laser average power method to realistic, specific methods have the following three: (
Change the pulse width;
Change the pulse frequency;
Change the pulse width and frequency at the same time.
Practical results show that, at the same time, change the pulse width and frequency effect is good.
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Metal laser cutting equipment 】
It is mainly used for cutting stainless steel, carbon steel, aluminum, copper, aluminum, iron, gold, silver etc. Thickness is 1.
0 ~ 25 mm plate;
Stainless steel laser cutting equipment 】
Classic gantry double drive structure of stable and reliable, automatic switching table, at the same time of cutting up and down on another table, convenient and quick to save time;
Optical fiber laser cutting 】
With high-speed movement speed, acceleration and dynamic performance, is laser for efficient and specialized research and development of a product, its cutting 0.
The speed of 5 mm stainless steel reached 100 m/min.
Carbon steel sheet metal laser cutting 】
Specializing in sheet metal processing industry demand for sheet of processing in the field of research and development design of laser processing equipment, it has a very high cost performance, with CNC system control, efficiency is much higher than in other laser cutting equipment for the board drive mode control.
More sheet metal laser cutting equipment laser cutting punch cutting punch