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remote laser welding: a few things to know. (produce).

by:QUESTT     2020-08-01
Laser welding for body and parts applications in the United StatesS.
Facilities are slowly developing.
Some of the benefits of remote laser welding can lead to acceleration.
There are some things to understand here.
Is it possible for machinery to minimize the number of tools required in the body shop, especially for components (e. g. , door, rear-shelf)assembly?
Answer to this question, according to Vancho Naumovski, manager, laser system, Utica Enterprise
Shelby Township, MI City), is yes.
Of course, the equipment in question is laser.
But not just what it is now (more or less)run-of-the-mill laser.
Naumovski talks about [CO. sub. 2]
Remote laser system.
A sentence about remote laser welding.
A basic principle of laser processing is that it is non-contact operation.
However, in the traditional laser processing, the working head is close to work, while the remote laser processing has a distance of 16 in.
Therefore, if the laser works with the robot and has the ability to effectively move the beam with a mirror, the speed is much higher than that.
In the setup developed by Utica, in its Flexlaser system series, the same type of small fast motor used in the computer printer is deployed to quickly move the mirror--
After all, the quality of the mirror is very low, so the mobile mechanism may be far less than the quality required to move the robot arm.
The main benefit of this confrontation distance and the ability to manipulate the beam is in a relatively large work area ---
For 24x48 months.
This brings us back to the issue of tools.
The reason why the tools needed for remote laser welding are less than other types of welding is because there is no need to move components --in-
From the station to the station--
From fixture to fixture--
In order to weld it, the larger work area helps to apply more welds on one station.
Less tools mean less money (
While Be sure to take into account the need to design a tool suitable for laser welding, which is different from the one used in traditional settings).
More advantages
There is also an additional benefit: the reduction in tool requirements means that the overall footprint of the work unit can be significantly reduced compared to the usual situation (e. g.
, A system developed by Utica is 30%, otherwise the floor area required).
Naumovski made another point about the remote laser welding process: the speed is fast.
He speaks five points a second.
Of course, there are other benefits to any type of laser welding, such as just one
Side contact parts (
In essence, if there is a line of sight, it can be welded with a beam);
Faster conversion (
Depending on the flexibility of the fixture, it may only be necessary to change the laser welder control program to another part);
And a set of welding patterns (e. g.
, Continuous line, line segment, circle, ellipse).
The remote laser welding system is capable of producing butt welds, angular welds and lap welds. The 3-kW diffusion-
Cooling flat panel laser used in Utica system (a 5-
KW systems are under development, which will provide a means to achieve balance
Larger working area)
Can be used to weld materials including soft steel and high steel
Strength of steel, stainless steel, aluminum, magnesium.
The system is capable of welding materials that are galvanized, plated or heat treated
Galvanized, aluminium plated.
However, Naumovski recommends that the coating thickness be consistent on the surface of the material and be controlled at 14 microns or less. Less METAL.
The benefits of design can be realized from this process.
For example, for two traditional solder joints, a flange of 12 to 18mm is usually required to accommodate the solder joint gun.
Welding with laser (
Remote or otherwise)
Can have a smaller flange (say, 7 mm)
Or, assuming a good metal fit, there is no flange at all (
This can save not only the price of materials, but also the weight of parts or vehicles). The heat-
The area of influence generated by laser welding is usually limited.
Due to the nature of non-contact, the clamping effect of the point welding gun has no problem of deformation.
One problem related to the speed of the remote laser welder is that it is so fast that the off-cycle time may be of concern: that is, it can be welded faster than the part load.
Utica has designed many different types of systems, such as two turntables, allowing parts to load during welding.
Naumovski admitted that the number of remote laser welding is currently quite Limited (e. g.
Daimler Chrysler is using a system to weld after-
Free door assembly)
But interest is growing.
One of his suggestions for those who are working on this possibility is that they must include a wide range of people in the project ---
From designers to welding engineers to production personnel.
This is not only because the technology is relatively new, but it is necessary to look at the project from a different perspective in order to take advantage of the advantages that this process can provide.
For example, the full benefits of laser welding (
Remote or otherwise)
If it is only a problem with laser welding, it is impossible to obtain the part designed for welding (e. g.
, It is likely that there is a flange larger than necessary).
Although the operation maintenance is relatively low (e. g.
, Clean the mirror with acetone every six shifts or so)
, This is a different type of maintenance, so it is necessary to include these people in the loop.
However, due to the time savings in remote laser welding, increased flexibility and the possibility of design, there should be a lot of champions in this technology.
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