At present, welding robots have become widely used in the field of industrial automation, and the common application fields are mainly: automobile industry, new energy, electronic appliances, mechanical equipment, etc. So what should be paid attention to when using welding robots?
Teaching must be carried out
Before the robot carries out automatic welding, the operator must teach the robot the trajectory of the welding gun and set the welding conditions.
Due to the necessity of teaching, robots do not face the welding of products with many varieties and a small amount of production.
The accuracy of the workpiece must be ensured
The robot has no eyes and can only repeat the same action.
The robot trajectory accuracy is ± 0.1mm, and the same action is repeated with this accuracy.
When the welding deviation is greater than the radius of the welding wire, the welding may not be good, so the workpiece accuracy should be kept within the radius of the welding wire.
The setting of welding conditions depends on the technical level of teaching operators
The operator must input the welding procedure, welding torch posture and angle, current, voltage, speed and other welding conditions when teaching.
The teaching operator must fully master the welding knowledge and welding skills.
Full attention must be paid to safety
The robot is a kind of high-speed moving equipment, and people are absolutely not allowed to approach the robot during its automatic operation (safety guardrails must be set).
Operators must receive special education on labor safety, otherwise they are not allowed to operate.
You should know that before the industrial robot carries out welding work, it is necessary to check the integrity of the working environment and accessories, specifically to ensure the following points:
The weld shall be cleaned and free of oil, rust, welding slag, cutting slag and other sundries, and weldable primer is allowed. Otherwise, the success rate of arc striking will be affected. The tack welding is changed from electrode welding to gas shielded welding. At the same time, the spot welding parts are polished to avoid the slag shell or air hole left by the tack welding, so as to avoid the instability of the arc and even the generation of spatter. Use assembly tooling with high accuracy to improve the assembly accuracy of weldments.
2. 要求工件的装配质量和精度必须有较好的一致性。 应用焊接机器人应严格控制零件的制备质量，提高焊件装配精度。零件表面质量、坡口尺寸和装配精度将影响焊缝跟踪效果。可以从编制焊接机器人专用的焊接工艺，对零件尺寸、焊缝坡口、装配尺寸进行严格的工艺规定。
The assembly quality and accuracy of the workpiece must be consistent. The application of welding robot should strictly control the preparation quality of parts and improve the assembly accuracy of weldments. Part surface quality, groove size and assembly accuracy will affect the weld tracking effect. It is possible to make strict process regulations on part size, weld groove and assembly size from the preparation of special welding process for welding robot.
The size tolerance of general parts and groove shall be controlled within ± 0.8mm, and the assembly size error shall be controlled within ± 1.5mm. The probability of welding defects such as pores and undercuts in the weld can be greatly reduced. To improve the preparation quality of parts and the assembly accuracy of weldments.