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Optimization of Tooling for Laser Welding

In the welding process found that the replacement of different welding products, laser welding initial proofing time-consuming, mass production process by the accuracy of parts of the weld quality instability and other issues. By optimizing the design of the corresponding tooling to reduce the automatic welding of the proofreading time to ensure the quality of weld and mass production needs. With the rapid development of industry, laser welding technology in the machinery, rail vehicles, automobile manufacturing, electronics and aerospace has been widely used. When using existing blue laser welding equipment, it is found that it takes a lot of time to calibrate the initial welding points of the parts during the replacement of the different welding products during the welding equipment. In addition, when the welding spot is limited by the size of the laser spot, Repeated positioning accuracy requirements are high, so the parts of a process of processing accuracy requirements are relatively increased, thus increasing the processing costs.

Despite the faster cutting speed and higher productivity of high-power solid-state lasers for metal 2D cutting, most metal manufacturers are excited, but it is still costly to control and manipulate the power of such lasers. Machine tool manufacturers continue to introduce higher power lasers. But in order to give full play to this advantage, they need to design to meet the harsh requirements of the laser system. The machine itself must be able to control the changes that occur with this high power cutting to ensure that the machining is not only fast and reliable, so that the manufacturer can take full advantage of the performance of the laser.

Laser welding system is through the robot to drive the welding parts of the welding parts, welding the initial point of the collection is equivalent to CNC machine tool processing parts of the knife, a direct impact on the subsequent parts of the processing accuracy. The main factors that affect the quality of red laser pointer welding are laser power, spot size, welding speed, shielding gas, parts precision and surface quality. Among them, the size of the focus spot in the focusing lens focusing radius for the value of the premise, by the welding head and part of the weld distance decision.

In the mass production process, due to the deviation of the location of the product itself, even if the initial calibration of the welding and then accurate, there is still welding bias, missed welding phenomenon, thus increasing the laser weld tracking system. The laser weld tracking system detects the trajectory of the weld by the laser vision sensor, calculates the weld deviation using the image processing software, and then transmits the deviation to the robot control system to control the robot to move the welding head to the correct position for welding.

Laser is the use of light energy, heat, electricity, chemical energy or nuclear energy and other external energy to stimulate the material, so that the occurrence of stimulated radiation generated by a special light. The laser is the stimulated radiation of light. Compared with ordinary light source, the characteristics of the green laser pointer are obvious, the direction is good (divergence angle is small), the searchlight is irradiated to the moon, the parallel searchlight 1 km when the spot diameter of 10 meters, the laser irradiation of the moon, spot diameter is about 2 km. High brightness, good color (color purity), good coherence, the speed of light transmission (3 × 108m / s) and so are the characteristics of the laser.

The peak power of the laser is large and can reach several hundred thousand megawatts because of its large energy can be used as laser cutting, laser medical, laser weapons. In addition, laser applications are laser ranging, laser gyro, laser processing. Laser medicine, the most simple application is the teeth, teeth when the sound, each patient are reluctant to listen, but if the laser to fill teeth, you can use the laser surface tartar, insect teeth part of the cut off, no sound. Laser processing, to make a rough part of the hair to do a gear, hair only 50 microns, in this to do a flat gear, the general mechanical means is not reach, can only use the laser.

Laser cutting machine brand differentiation is the purpose of the product's core strengths or personality differences into the brand, to meet the individual needs of the target customer. Successful high power laser cutting machine brand has a differentiated characteristics, different from the competitors, and then in a consistent form of the brand differences with the customer's psychological needs to connect, in this way the brand positioning information accurately communicated to Market, in the hearts of potential customers to occupy a favorable position. The purpose is to create and cultivate their own characteristics of the laser cutting machine products, distinctive personality, establish a unique market image, to distinguish it from competitors, effectively determine the product in the customer's position in the neutral position.
publié le mercredi 04 octobre à 08:03

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