Posts by jbi1979

    Hi there,

    Recently I was able to do a simulation of the weldslicer paths for automatic multilayer/multipass welding on arbitrary shaped welds with the evaluation version of RoboDK.

    weldslicer - automatic robot multilayer/multipass welding - simulation details
    https://www.weldslicer.comweldslicer is a solution to robot multilayer/multipass welding for arbitrary shaped weld grooves, which calculates the pass layout ...

    weldslicer - automatic robot multilayer/multipass welding - simulation
    https://www.weldslicer.comweldslicer is a solution to robot multilayer/multipass welding for arbitrary shaped weld grooves, which calculates the pass layout ...

    Not from the industry, but was involved some 15 years ago in building high bay racks. I think it has to do with the deflections the rack structure is to experience. Every load is different so the deflections are. Pallets close to the upright get less deflections than pallets in the middle. And this deflection is always different, also depending on the load of the neighboring racks when the have a common profile (where the pallets are standing). There is also "double deep" racks where the pallet fork has to reach to the 2nd row, where there is also to consider the deflection of the fork itself.


    I would like to do a little survey here. I have posted about a tool for offline creation of multilayer / multipass welds here tool for offline creation and simulation for multilayer weld paths - weldslicer

    Since the original purpose of this is for more complicated welds I asked myself if someone here would be interested in a „lite“ version of weldslicer.

    To lay out a little bit:

    From a weld profile drawn as a dxf or stp and provided min/max weld speed, wire feed, wire diameter, max. bead width, bead sequence choice, start side of the bead this lite version would automatically determine the areas of the needed passes,determine X/Y position of the bead, weave width, weld speed, middle vector of weld gun approach.

    If you are interested please send me a PM. When there is sufficient demand I will do the „weldslicer lite“ and a beta test with you.

    Although this is an old thread I figured you maybe interested in this

    It seems to me a lot of welding cobot integrator are in the market. Which experience you have with them welding and what difficulties you had and which features are you missing or would you greatly appreciate (thick plate welding, multilayer (multipass) welding, more 3d paths, dynamic assignment of welding parameters or position, considering tolerances of weldment, touch sensing and alignment, laser scanning of actual path geometry, ...)? Also if you have one of a kind production are there missing pieces which makes it impossible for you to use cobots (or robots)?


    I have been working quite a while on something similar to a slicer for 3d printing but for variable multilayer welds. I am roughly following what is described in the literature "equal area assumption". In short along a basecurve the weld get sliced into crosssections, this crosssection get sliced into passes, this passes get connected and return the paths, which the weld torch is going to follow. A scan (either a .stl or a .ply - point cloud) of the part geometry can be provided, since the cad based basecurve and the top cover face of the weld (top bead) are fitted to the scan and the slicing is carried out on this adapted model. It is only necessary to create the input parameters once, and every time the scan changes weldslicer creates the weld paths new.

    In below chart along the weld (x-axis) the cross section (y-axis) varies. The colored fields represent the areas of the weld paths. Each area is within the weld procedure specifications determined Amin/Amax borders (caused by min/max. weld speed).

    Some examples (Input and Output) are found on:

    The tool for the CAD interaction is based on FreeCAD. With the provided workbench at you are able to see and simulate the generated paths. Also the workbench is used to generate the input data for the weldslicer itself.

    The handling of the workbench and the result of the weldslicer can be seen on following youtube videos:

    If someone is interested please let me know.

    Best regards

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