welding robot teaching-free scanning
BackgroundsAs an important tool for the automation of welding production, industrial robots are widely used in many manufacturing companies.
In actual welding, due to the changes in the position and size of the weld seam caused by processing and assembly errors,
the welding robot cannot follow the pre-taught trajectory to weld, and the welding quality is reduced. Sensors are indispensable for welding robots from teaching reproduction to intelligence.
With the continuous development of industry,
the term “intelligent manufacturing” has been mentioned by more and more industrial peoples.
For some products with low precision or low tooling and assembly, many companies have introduced welding robots.
To meet actual production needs, sensors are the preferred means of automation upgrades.
In the current welding production process
- Different products need to design different types of production lines and production processes;
- Similar products, due to different models, usually need to replace the tooling and fixture.
- There are assembly errors in the assembly process of the workpieces, processing errors in the processing process, differences between the actual welded workpieces and the design patterns, and thermal deformation during the welding process will also cause errors in the welding process...
- For robot welding, simple teaching usually has a large error.
The welding robot teaching-free scanning system is a system independently developed by【ATINY】 that does not require path programming of the workpiece,
and has practical significance for teaching.
This system can directly perform intelligent and autonomous welding on the weld of the product, which solves the problem that a single small batch of products cannot be automatically welded.
Real-time positioning and correction of welding points and trajectories through vision technology is an efficient solution.
The strong penetrating laser vision can more effectively solve the interference problems caused by the smoke, arc, and metal splash during the welding process.
Ensuring the quality of welding also guarantees the quality of use of the product in the application process.
The teaching-free scanning system adds a pair of "eyes" laser vision welding seam tracking system to the industrial robot, allowing the welding robot to realize real-time welding seam location and tracking,
and correct the welding trajectory according to the welding seam offset during the welding process, realizing true intelligence welding.
System ComponentsParametric programming software + vision, laser sensor
"Teach-free + vision"/"Teach-free + laser" solution.
"Teach-free" is the use of parameterized programming software, trajectory planning software and other independent development of programming software, which frees workers from the complicated teaching and programming work.
It is through real-time tracking or scanning before welding and other methods to solve the problem of inconsistent workpieces in the process.
From the point of view of the production link, "teaching-free" is to solve the programming problem before production,
and "laser, vision" is to solve the problem of precise position control in the production process and solve the problem of welding accuracy.
The teaching-free scanning system automatically generates the welding trajectory of the robot after 3D scanning the workpiece, and combines the work of precise positioning and correction of the laser.
It is very suitable for the independent welding of multi-variety and small-batch products that are common in the industrial field.
This type of welding system eliminates the need for workpiece digital model creation, offline programming, robot teaching and other links, which can effectively improve the overall welding quality and efficiency.
Steel grating application pictureProject Name: Steel Grating Scanning
Industry: Steel grating welding
Workpiece name: steel grating
Product model: CXZK-aT-T3
Welding type: gas shielded welding
Weld type: fillet weld
Robot name: Yaskawa Robot
Product function: Weld recognition and welding by scanning the workpiece
Solve the customer's problem: the welding of steel grating is difficult.