​The application and introduction of laser cutting machine part.4

Laser cutting machine in the work, if there is a fault is very dangerous, novice must be trained by professionals to operate independently, according to experience summarized the laser cutting machine safety work of 13 details:

1.Comply with the general safe operation procedure of cutting machine.Start the laser in strict accordance with the laser startup procedure.

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

3.Wear labor protection equipment according to the regulations. Wear protective glasses in accordance with the regulations near the laser beam.

4.Do not process a material until it is clear whether it can be irradiated or heated by a laser, which can potentially create smoke and steam.

5.When the equipment is started, the operator shall not leave the position or ask someone to be in charge. If it is really necessary to leave, the machine shall stop or cut off the power switch.

6.Keep fire extinguishers within easy reach;Turn off the laser or light gate when not working.Do not place paper, cloth, or other flammable material near an unprotected laser beam.

7.If any abnormality is found in the process of processing, the machine shall be stopped immediately and the fault shall be removed or reported to the supervisor in a timely manner.

8.Keep the laser, the bed and the surrounding area clean, orderly and free from oil, and stack the workpiece, plate and waste according to the regulations.

9.When using gas cylinders, welding wires should be avoided to avoid electric leakage accidents.The use and transportation of cylinders shall comply with the cylinder monitoring regulations.Do not expose cylinders to the sun or near a heat source.When opening the bottle valve, the operator must stand on the side of the bottle nozzle.

10.High voltage safety procedures should be observed during maintenance.Every 40 hours of operation or weekly maintenance, every 1,000 hours of operation or every six months of maintenance should be carried out in accordance with the rules and procedures.

11.Start the machine at low speed X and Y manually after starting the machine, check and confirm whether there is any abnormal situation.

12.After the new workpiece program input, should first try to run, and check its operation.

13.When working, pay attention to the operation of the machine, so as to avoid the cutting machine out of the effective travel range or two collision accidents.

The polarization properties of laser beams.Like any other transmission of electromagnetic waves, lasers have electric and magnetic vectors perpendicular to each other in two directions, both of which are orthogonal to the direction of laser transmission.It is generally believed that the direction of the electric vector is the polarization direction of the beam.The polarization property of beam affects the energy absorption of beam.Cutting parallel to the polarization of the beam results in a narrow cut with a smooth, straight edge.If there is an Angle between the cutting direction and the polarization plane, the energy absorption decreases the cutting speed, and the cutting speed slows down.Once the cutting direction is perpendicular to the polarization direction the edges won't be rough but the cutting speed will be slower and the damage will be wider. Right?The cutting quality has declined significantly.Although this is required in principle it is difficult to keep the cutting direction parallel to the polarization direction during multi-axis motion.A phase delay device is provided to overcome this instability.Studies have shown that circularly polarized light is most suitable for cutting metals.Most lasers produce polarized light 45 degrees from the vertical direction.The phase delay device converts the line-polarized light into circularly polarized light.This method is very effective for cutting metal. Right?But it doesn't work with other materials like plastic and wood.

Auxiliary gas selection and air pressure setting.The typical pressure value is 150-300kpa when cutting sheet material at high speed.It usually takes only 40-60kpa to cut 12 - thick plates.

Cutting speed.When the velocity is too slow, the pinnate Martian particles will flow down directly. When the velocity is too fast, the pinnate Martian particles will be at an acute Angle to the vertical direction and will be unstable.The plume of Martian particles at an obtuse Angle to the vertical direction is the appropriate velocity.

Set the pressure.The auxiliary gas pressure is controlled by a numerical control machine.The correct way to do this is to have to calibrate the air pressure controller in automatic mode when calibrating. Right?Activate the program.Activate the program and press the loop button to follow the screen's instructions.The program will calibrate the air pressure system automatically.

Fiber-optic laser cutting machine use five skills

1) the double focal length laser cutting head is a fragile item on the laser cutting machine, which has been used for a long time, resulting in the damage of the laser cutting head.

2) check the straightness of the track and the verticality of the machine of the optical fiber laser cutting machine every six months, and timely maintenance and debugging if abnormal conditions are found.Do not do this, it is possible to cut out the effect is not very good, the error will increase, affecting the quality of cutting.This is a top priority and must be done.

3) use a vacuum cleaner once a week to remove dust and dirt from the machine. All electrical cabinets should be strictly dustproof.

4) check the steel belt of the optical fiber laser cutting machine frequently to ensure the tension.Otherwise in the operation of the problem, it may hurt people, serious can also lead to death.The steel strip looks like a small thing, but there is something serious wrong with it.

5) each guide rail of optical fiber laser cutting machine should be cleaned frequently to remove dust and other sundries, so as to ensure the normal rack of equipment should be wiped frequently, and lubricating oil should be added to ensure lubrication without sundries.Guide rail should be cleaned and lubricated frequently, and the motor should be cleaned and lubricated frequently, so that the machine can move in a better position and cut more accurately, and the quality of cut products will be improved.

Matters needing attention

The matters needing attention of operating laser cutting machine are as follows:

1. Comply with the general safe operation rules of cutting machine.Strictly follow the laser starting procedure to start the laser, dimming and trial run.

2. The operator shall be trained to be familiar with the cutting software, equipment structure and performance, and master the knowledge related to the operating system.

3. Wear labor protection equipment as required, and wear the required protective glasses near the laser beam.

4. Do not process a material until it is clear whether it can be irradiated or cut with a laser to avoid the potential danger of smoke and vapour.

5. Operators shall not leave their posts or ask others to be in charge when the equipment is started. If it is really necessary to leave, the machine shall stop or cut off the power switch.

6. If any abnormality is found in the process of processing, the machine shall stop immediately, and the fault shall be removed or reported to the supervisor in a timely manner.

7. Keep fire extinguishers within easy reach;Turn off the laser or light gate when not working.Do not place paper, cloth, or other flammable material near an unprotected laser beam.

advantages

1, high precision: suitable for precision parts cutting and a variety of craft word, painting fine cutting.

2, fast: more than 100 times of the line cutting.

3. The heat-affected area is small and not easily deformed.The cutting seam is smooth and beautiful, without any post-sequence treatment.

4, high cost performance: the price is only the same performance of CO2 laser cutting machine 1/3, and the same effect of CNC punch 2/5.

5, the use cost is very low: only 1/8 ~ 1/10 of the same type of CO2 laser cutting machine, the hourly cost is only about 18 yuan, CO2 laser cutting machine is about 150 ~ 180 yuan per hour.

6, follow-up maintenance costs are very low: only 1/10 ~ 1/15 of the same type of CO2 laser cutting machine, and 1/3 ~ 1/4 of the same effect of CNC punch.

7. Stable performance to ensure continuous production.Solid YAG laser is one of the most stable and mature products in the laser field.

8. Compared with CNC punch, YAG laser cutting machine has the following advantages:

(1) can complete the processing of various complex structures, as long as it can draw any image on the computer, the machine can complete the processing.

(2) do not need to open the mold, only on the computer to make the picture, the product can be out immediately, which can quickly develop new products, and can save costs.

(3) YAG cutting machine has an automatic tracking system, so it can not only complete the plane cutting, but also can complete all kinds of uneven surface cutting.

(4) the complex process requires CNC punch is difficult to complete, laser cutting can be done.

(5) the surface is very smooth, the product grade is very high, the numerical control punch is difficult to achieve.

(6) the molding box (within 0.5 meters thick) need to increase the hole and groove processing, CNC punch can not be processed, YAG CNC metal laser cutting function.