Advantages and application areas of laser welding robots
Time:2023-10-31
First, what is laser welding robot?
Welding robot is an automatic welding equipment used in welding operations. As the name suggests, welding robots can achieve intelligent welding of weldparts without human involvement. Its intelligent control system is equivalent to the reaction of a skilled welder and can be flexibly applied to different specifications of welds. Robotic laser welding machines use lasers as welding heat sources. The robot laser welding machine can illuminate a laser beam with high energy density on two parts of the material, so that the local heating melts, and then cooling solidifies to form a whole.
Second, the characteristics of laser welding robot
1, robot welding can improve production efficiency
The welding robot has short response time and rapid action, and the welding speed is 60-3000px/ min, which is much higher than that of manual welding. The robot does not stop or rest in the operation process, as long as the external water and electrical conditions are guaranteed, the robot can continue to work 24 hours, which not only improves the production efficiency of the enterprise, but also saves labor costs to a large extent.
2, robot welding can improve product quality
In the welding process of the welding robot, as long as the welding parameters and motion trajectory are given, the robot will precisely repeat this action. The welding current, voltage, welding speed and welding wire length and other parameters play a decisive role in the welding result. When robot welding is used, the welding parameters of each weld are constant, reducing the requirements for workers' operation technology, avoiding the influence of manual welding by the external environment, welding stability, and ensuring the high quality of products.
3, robot welding can reduce the cost of enterprises
The reduction of enterprise costs by welding robots is mainly reflected in large-scale production, and a robot can replace 2 to 4 industrial workers, depending on the specific situation of the enterprise. Robot 24-hour continuous production, in addition, with the application of high-speed and efficient welding technology, the use of robot welding cost reduction is more obvious.
4, robot welding is easy to arrange production plans
Due to the high repeatability of the robot, as long as the parameters are given, it will always follow the instructions to act, so the robot welding product cycle is clear and easy to control the product output. The production rhythm of the robot is fixed, and the production plan can be accurately arranged to maximize the production efficiency and comprehensive utilization of resources.
5, robot welding can shorten the cycle of product transformation
Robot welding can realize the automation of welding of small batch products, shorten the cycle of product transformation and reduce the corresponding equipment investment. The biggest difference between robots and special aircraft is that the program can be modified to adapt to the production of different workpieces. When the product is upgraded, only the corresponding tools of product design need to be replaced, and the robot body does not need to make any changes, and the corresponding program commands can be changed to update the product or equipment.
Third, the basic performance requirements of laser welding robots
1. Welding speed. The welding speed needs to match the welding quality. Too fast welding speed will affect the welding quality, and welding defects such as welding deviation, less welding, and missing welding are easy to occur. If the welding speed is too slow, it will affect the production process. Welding speed is an important index to determine welding efficiency.
2. Rated load of wrist. Refers to the load that the end of the robot laser welding machine can bear. The rated load of the wrist determines its arm distance and welding workpiece specifications, and its load includes welding guns, cables, vision sensors, wire feeding tubes, etc.
3. Number of axles. Refers to the joint of the robot laser welding machine. The flexibility of a robotic laser welding machine varies with the number of shafts. The robot laser welding machine with a large number of joints has better flexibility, more welding specifications and wider welding applications.
4. Arm span. It reflects the welding radius of the robot laser welding machine. The longer the arm span, the larger the welding radius, the larger the weldment specification. Users can choose the arm distance of the robot laser welding machine according to their own welding space, welding specifications and welding requirements.
5. Body weight. The weight of the robot laser welding machine varies with the specifications, and the weight varies according to the arm distance and welding range.
6. Repeat positioning accuracy. It reflects the welding accuracy maintained by the robot laser welding machine in the repeated action, and the qualified robot laser welding machine can maintain the welding accuracy without deviation.
The moving speed of the robot laser welding machine is an important indicator, requiring the rapid completion of small-pitch multi-point positioning (such as positioning after moving 30-50mm spacing every 0.3-0.4 seconds). In order to ensure the quality of welding, high positioning accuracy is required (generally 0-25mm); It has a large load capacity (50 ~ 100 kg) to carry the welding pliers of the built-in transformer.
