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A unique machine I would like to build

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  • A unique machine I would like to build

    It would be a weldment maker, except the weldment would be all weld.
    Think of a XY gantry machine. The Z axis would be a falling table with a sacrificial plate mounted on it. The table would be serviced by two heads, one a wire feed welder, and the other a blanchard type grinding wheel. Your cad file would be broken up into layers, and Y axis passes. The welding head would lay a series of passes to complete the first layer, and the grinding head would remove say 25% of the height to get a smooth flat surface suitable for the next layer. The process would repeat until the object of your desire was completed.
    After a normalizing heat treat the workpiece could be machined to its final size and shape.
    Whatcha think?

  • #2
    Add to it a scanning system, and it might work.


    ------------------
    David Cofer, Of:
    Tunnel Hill, North Georgia

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    • #3
      soooo....an FDM (Fused Deposition Modeling) machine that uses welding wire instead of some plastic filler? It'd probably work, someone may already have done it.

      I think there are better processes though, like laser sintering.

      "Albrecht Rأ¶ders GmbH & Co, Soltau, Germany, which displayed its combination high speed milling/laser machine. Metal buildup is controlled by laying down a layer of metal with its laser and then milling it flat, and laying down another layer of metal and repeating the milling/lasing cycle until the part is formed or repaired."

      from http://www.manufacturingcenter.com/t...97/1197tu.html

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      • #4
        I was wondering if the servos could be shielded enough from the EMR of the welder.

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        • #5
          About 5 years ago, on a visit to the University of Wollongong (Australia) Engineering Department I saw a machine which they were experimenting with which worked on this principle. They were trying to develop a machine for making prototypes to be used in metalcasting. Their machine was CAD / CAM controlled and used a MIG welder to deposit the layers of metal. Seemed very interesting at the time with lots of possibilities. I don't know of any further developments with UOW's machine.

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          • #6
            You are a day late and a dollar short. I have a business friend who was bidding on a machine to fabricate large bore tubes by welding in a continuous manner.
            JRW

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            • #7
              Check out the video at this site for rapid protyping:
              http://est.msfc.nasa.gov/ISFR/fab.html

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