When building a building, engineers perform plenty of give-and-take when it comes to costs. They may pick a thinner wall thickness for HSS, saving on material, then again deal with the added expense of additional through-plates or other connectors to ensure the structure has sufficient strength. Or they can choose thicker-walled HSS to make certain connections between structural members meet requirements. Architectural engineers may require connections between HSS, or connect HSS to wide-flange beams. It’s a continual balancing act.
This balancing act might be easier-and here is where seamless steel pipe can definitely shine. The appliance effectively makes complex geometries at HSS end sections inexpensive to fabricate. Six-axis laser cutting heads create complex bevels in addition to tab-and-slot arrangements to simplify fit-up. This includes tilting from side to side (moving over the A/B axis), which can be extremely beneficial not simply for HSS, however for cutting various structural geometries, including wide-flange beams. By tilting, your head can cut geometries in corners, eliminating secondary operations.
This tilting enables cutting angles for bevels and also precise fit-up between two HSS of several diameters. What should you need one tube to slip in in an angle with another tube? A 3-D cutting head can cut the desired angles to make certain complete surface contact; that is, no gap involving the two workpieces. Systems also provide secondary tapping units to tap holes within the laser cutting work envelope (see Figures 3-7).
This done-in-one concept reduces handling and total production time, at the very least that’s the optimal. But this is far more complicated when compared to a tube cutoff operation using a saw, and quite distinct from typical light-gauge laser cutting; again, stick weight could be thousands of pounds. This makes proper planning and inspection much more important.
It starts with the 3-D CAD model, which inside the architectural world is usually integrated into BIM, or building information modeling. The architectural industry also transfers data via files formatted as Industry Foundation Classes (IFC), an object-based building model format created by the International Alliance for Interoperability (IAI). Such files can now be imported straight into machine tool software.
The program shows how the laser cutting machine will process the hollow section tube, simulating the whole work cycle. This includes the loading automation, when several V arms position a new part of material, whether it is round, rectangular, or square. The simulation then shows the master chuck grabbing on the material and pushing it through another chuck (the slave chuck) and to the laser work envelope.
As being the material moves into position, the program reveals just where the probe will contact the workpiece. Touch sensing may be critical with heavy HSS. The probe compares the specific workpiece geometry on the one programmed in the machine. For instance, the longitudinal weld within a tube production process can make distortion in extremely long HSS, as well as the touch probe can are the cause of that distortion.
The application simulates the laser cutting and (if required) tapping work cycle, ensuring you can find no interferences between your processing heads and workpiece. It simulates chuck movement through the entire cycle after which shows the way the machine will unload the finished workpiece and remnant.
All of this is planned before anything moves towards the shop floor. This sort of simulation may benefit various fabrication processes, naturally, but it becomes more important when confronted with large sections. Moving and fabricating bad components coming from a 2,000-lb. tube represents plenty of wasted time and money.
If you think about how long wide-flange beams are already in use, HSS continue to be newcomers, the good news is more builders are calling for them. Examine various building designs today, and you’ll see HSS increasingly prevalent, either dominant within a building’s design or providing efficient support between wide-flange beams.
About the fabrication side, most beams being shipped to construction sites are processed through beam lines, and a number of the latest technologies in this arena include aspects of the done-in-one concept: stainless steel tubing, tapping, drilling, and more, all-in-one machine. This idea has carried onto the laser cutting arena, in dexopky12 the workpiece and multiaxis cutting heads transfer concert to create extremely complex geometries, many considered to be too expensive or simply impossible not too long ago.
Now the laser has made these possible and expense-effective, because process simulation, touch probing, along with the done-in-one concept reduce overall fabrication time. As soon as these heavy sections achieve the work site, erectors can assemble them quickly, shortening overall construction time-which, inside the scheme of things, offers the most dramatic result on construction costs. It has been core to the prosperity of many architectural and structural fabricators in recent times: Do more in the controllable environment of your fabrication shop to create things easier inside the relatively uncontrollable environment in the construction site.