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Thread: Epoxy granite in metal frame.

  1. #37
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    Default Re: Epoxy granite in metal frame.

    So I have been away from the forums for a while. The initial plan has changed and we moved away from the idea of using granite at all.
    We have build a iron tube frame. It was welded with tig weld and then sent to be faced and also have the guides for the X linear guid rails machined.

    Here is the model for the frame
    Epoxy granite in metal frame.-frame-model-jpg

    And here is how it is after the machinning process.
    Epoxy granite in metal frame.-0-02-03-8f74b7c86f557803d20b2c9bb27bf3953b755ada29825f500d139f5c0f1756b0_4b1a7d62-jpg
    Epoxy granite in metal frame.-0-02-03-09ce098039f6fa7629ecc82d2f7c21c0b852e4d1c4c9823c44e597a9cb92359e_60dcaee8_1535527340-jpg
    Epoxy granite in metal frame.-0-02-03-28e32994aa85d40ae3d325e5852ec91ef7039f3f73b2a445399babe2b03e94c0_41a40ac4-jpg

    This frame is being built in order to replace a less rigid and lighter frame our machine already has. Also there will be some changes on the rest of the assembly as well. I try to get video footage from the process and create a nice video in the end.
    The tubes are 60*60mm and 5mm thick. The weight of the frame alone is around 300kg.

    Attached Thumbnails Attached Thumbnails Epoxy granite in metal frame.-frame-model-jpg   Epoxy granite in metal frame.-0-02-03-8f74b7c86f557803d20b2c9bb27bf3953b755ada29825f500d139f5c0f1756b0_4b1a7d62-jpg   Epoxy granite in metal frame.-0-02-03-28e32994aa85d40ae3d325e5852ec91ef7039f3f73b2a445399babe2b03e94c0_41a40ac4-jpg   Epoxy granite in metal frame.-0-02-03-09ce098039f6fa7629ecc82d2f7c21c0b852e4d1c4c9823c44e597a9cb92359e_60dcaee8_1535527340-jpg  



  2. #38
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    hi,

    Good day!
    We are cnc machining factory in china , if you need Customize Mechanical Design metal parts let me know, send us drawing ,we provide high quality and good price products for you.

    Thank you!

    James

    E:service@cncmachiningchina.org



  3. #39
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    Default Re: Epoxy granite in metal frame.

    In my building router machine, 100x100x4mm steel tubes are used for the frame. I still don't know how weird it will be after the arc welding that I will do. Firstly, I am a poor welder. Another things are the said deformation and the stress inside after the process. I want to change my mind to use as least welding as possible and use screw bolting method. Firstly, the ends of tubes will be welded with a small square plate said 92x92mm "Inside" (I don't know if it is easy to do). Then it can be bolted to the sides of the left and right tubes with 4 screws (of course 4 additional holes needed to be drilled on opposite wall for inserting the hex key for fixing the nut on, even then, the holes needed to be larger for facilitating to put the nut through it if there is no other way to do). ...Of course, the rigidity of the whole assembly is less for this method than that of directly welding method among the tubes, but the pay-for is a better precision and also I haven't get resources to do the stress relief and face milling process in my living city. Is it okay and any advices?



  4. #40
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    Default Re: Epoxy granite in metal frame.

    Can you switch to having the end plates be outside ( > 100x100mm) caps rather than plugs? Much easier to get a strong weld.



  5. #41
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    Default Re: Epoxy granite in metal frame.

    Yes, I can and will properly do them like that. And as all steel tubes already cut before I posted last time, I need to modify their lengths slightly to suit. Even so, instead of square 100x100mm end plates, using a rectangular one, let's say 150x100mm to leave flanges at two opposite edges for screw fixing location will make the bolting operation easier. And again, 100x100mm square plate with screws right at inside corners are the most strong fixing method,still don't know yet in comparison?



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