Laser welding principle of welding robot

2025-05-21

Welding robot laser is a monochromatic, directional focused energy beam produced by using stimulated radiation to amplify light, which can obtain a diameter of less than 0.01mm and a power density of up to 10W/㎡. It can be used as a heat source for welding, cutting, and material surface cladding. When laser light waves are incident on materials, the charged particles in the material vibrate according to the rhythm of the light wave electric vector, converting the radiation energy of photons into the kinetic energy of electrons. After absorbing laser, substances first generate excess energy of certain particles, such as the kinetic energy of free electrons, the excitation energy of bound electrons, or excess phonons. These original excitation energies are converted into thermal energy through a certain process. Besides being electromagnetic waves like other light sources, lasers also have characteristics that other light sources do not possess, such as high directionality, high brightness (photon intensity), high monochromaticity, and high coherence. During laser welding processing, the conversion of light energy absorbed by the material into thermal energy is completed in a very short time (about 10 seconds). During this time, thermal energy is limited to the laser radiation area of the material,...

Characteristics of laser welding robots

2025-05-21

1. The power and size of the laser focus are adjusted according to the processing requirements, while real-time monitoring of the processing process is carried out to achieve various application possibilities. 2. Laser power is high, heat affected area is small, deformation is small, and welding speed is fast. 3. The light energy generated by the laser can be transmitted to distant workstations through small diameter optical fibers, and welding of workpieces can be achieved through robots. 4. The weld seam is of high quality, smooth and beautiful, without pores, and the toughness of the welded material is at least equivalent to that of the parent material. 5. Short term local heating has minimal thermal impact on the substrate and surrounding components, and the quality of solder joints is good. 6. The use of laser welding robot equipment can save a lot of samples and tooling equipment, reduce workshop area by half, and save investment. Laser welding robots have minimal deformation of welded workpieces, almost no connection gaps, and relatively high welding depth and width, resulting in higher welding quality than traditional welding methods. By adjusting welding process parameters through feedback control, automated laser welding can be achieved. ...

What are the advantages of using laser welding robots

2025-05-21

1. In line with the trend of environmental protection development. In traditional welding, smoke, dust, harmful gases, etc. are prone to occur, which have a certain impact on the environment. Laser welding robots use electron laser beams for welding, which focus into electron laser beams through high voltage. During the welding operation, the kinetic energy of electrons is converted into heat energy, causing local melting of the workpiece material to achieve welding. Electron laser beam welding does not require the use of welding materials, has minimal environmental hazards, and is not easily oxidized. 2. Real time monitoring of the production process to ensure welding quality. Laser welding robots are equipped with multiple sensors that can monitor the welding process in real-time. In the event of a malfunction, an alarm signal will be issued, and the output power and size of the laser focusing point will be dynamically adjusted according to production and processing regulations. Suitable welding parameters will be used for different welding parts to control the welding quality. 3. Flexible running speed and wide application range. The laser welding robot adopts a multi axis design. In order to improve welding flexibility, it can also be equipped with a welding positioner to enhance its flex...

Technology and application of welding robots

2025-05-21

Welding robot technology is an important component of modern manufacturing, with wide applications and far-reaching impacts. Welding robots mainly achieve precise positioning through technologies such as good visual systems, laser rangefinders, inertial navigation systems, and wireless sensor networks. The visual system uses cameras to capture images, identifies the position of the weld seam through an image processing unit, and guides the robot to perform accurate welding. The laser rangefinder calculates the distance by measuring the reflection time of the laser beam, ensuring the positioning accuracy during the welding process. Inertial navigation systems and wireless sensor networks monitor the robot's motion status and surrounding environment through inertial sensors and sensor nodes, respectively, further improving the accuracy and stability of welding. In terms of application, welding robots have penetrated into multiple fields such as mechanical manufacturing, automotive manufacturing, and electronic equipment. In mechanical manufacturing, welding robots can efficiently complete the welding work of metal structural components, containers, frames, and other parts, improving production efficiency and welding quality. In the field of automobile manufacturing, welding robots are widel...

Types and characteristics of welding robots

2025-05-21

Welding robots are mainly divided into various types based on their functions, application scenarios, and operating methods, each with its unique characteristics. Arc welding robots are a common type in industrial welding, mainly used for connecting metal parts. According to different types of arcs, arc welding robots can be divided into gas shielded welding robots, manual arc welding robots, and tungsten inert gas welding (TIG) robots. Gas shielded welding robots use inert gas as a protective gas to avoid contact between the welding area and air, prevent oxidation, and are suitable for large-scale production in the automotive industry, shipbuilding industry, and other fields. The manual arc welding robot is flexible in operation and suitable for welding various metals and thicknesses. It is commonly used for small-scale production or maintenance work. TIG welding robots use non consumable tungsten electrodes for welding, suitable for high-precision welding requirements such as aerospace industry, nuclear industry, etc. Spot welding robots are mainly used to weld two or more metal plates together at multiple points through heating and pressure, forming a strong connection, and are important equipment in the automotive manufacturing industry. Spot welding robots can be divided into fixed spot ...

Control methods and precautions for welding robots

2025-05-21

The control methods of welding robots mainly rely on good sensing technology, vision systems, adaptive control algorithms, and intelligent control systems. Through sensing technology, robots can monitor the position, shape, and size of welds in real time, and adjust the wire feeding speed to adapt to changes in the welding path. Meanwhile, an excellent visual system can capture weld seam images, extract welding path information, and ensure that the welding wire is welded in the correct position. The adaptive control algorithm automatically adjusts welding parameters such as current, voltage, and welding speed according to the different requirements of the welding task to maintain the consistency of the weld seam. Intelligent control systems can learn and adapt to different welding tasks, continuously optimize control strategies, and improve welding accuracy and efficiency. When using welding robots, the following precautions should be taken: 1. Safety equipment: Operators must wear work clothes, gloves, protective goggles and other safety equipment to prevent potential injuries such as splashes and high temperatures. 2. Equipment inspection: Before starting, conduct a comprehensive inspection of the robot body, control system, welding tools, etc., to ensure that there is no damage or loosen...

The composition structure and working principle of welding robots

2025-05-21

Welding robots are essential equipment in modern industrial production, and their efficient welding capabilities and stable welding quality greatly improve production efficiency. This article will briefly introduce the composition structure and working principle of welding robots. Welding robots are mainly composed of robotic arms, control systems, welding power sources, sensors, and other auxiliary equipment. The robotic arm is the core component of a welding robot, consisting of multiple degrees of freedom joints that can flexibly move to the desired position. The end is equipped with a welding gun to achieve accurate welding operations. The control system is equivalent to the "brain" of the welding robot, responsible for receiving external instructions, controlling the motion path of the robotic arm, welding parameters, and welding process. The welding power supply provides energy for the welding process, and its output current and voltage directly affect the welding quality. Sensors are responsible for monitoring various parameters during the welding process, such as current, voltage, temperature, etc., and providing feedback to the control system. Auxiliary equipment includes wire feeding device, cooling system, protective gas system, etc., to ensure the smooth progress of the we...