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  1. #1
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    344

    Default Welding Bumper Guards for FIRST Robotics

    The bumper guards are removable from the robot so that you can easily change them to either red or blue depending an the particular alliance. We decided to make the length and width of our robot a little smaller so we wouldn't be so close the perimeter limit, like we were in the past. Unfortunately we didn't make the bumper guard smaller to match. You can clearly see the misfit on our SolidWorks assembly model but if you don't look at the model you don't see it. So I had to cut 3/8" off of the two long sides to make it fit. While I was at it, I also added fillet welds in the corners to stiffen up the bumper guards. There was only a short section about 1.5" long on top connecting the sides together and it looked wimpy to me. I found out later that the bumper guards failed in that area last year.

    1. Three Bumper Supports Cut up.jpg
    2. Fixtured for Welding.jpg
    3. Inside Fillet Weld.jpg
    4. Outside Fillet Weld .jpg
    Last edited by Don52; 02-16-2014 at 10:26 PM.

    Miller Thunderbolt
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  2. #2
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,868

    Default

    Very nice job. Did I miss a post with the robots? Like to see a pic of the whole unit.
    MM250
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  3. #3
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    344

    Default

    Quote Originally Posted by MMW View Post
    Very nice job. Did I miss a post with the robots? Like to see a pic of the whole unit.
    We had to put the robot in a sealed bag last night at midnight.
    It was a mad rush to get it finished.
    I will take a picture of the whole robot as soon as I get the chance.
    This weekend I have to weld some parts for our second practice robot.

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Miller Spectrum 375 Plasma Torch

  4. #4
    Join Date
    Apr 2010
    Posts
    276

    Default

    I know that rushed feeling. 6 weeks isn't much time to put one of those together.
    Miller stuff:
    Dialarc 250 (1974)
    Syncrowave 250 (1992)
    Spot welder (Dayton badged)

  5. #5
    Join Date
    May 2008
    Location
    Troy, MI
    Posts
    344

    Default

    Quote Originally Posted by MMW View Post
    Very nice job. Did I miss a post with the robots? Like to see a pic of the whole unit.
    You didn't miss anything. I took some pictures at the competition held last weekend.

    The first picture shows the bumper suport, which I cut down & welded, mounted on the robot during construction of the robot.

    Picture 2 and 3 show the complete robot

    Only a little of my weld showed on the completed robot as seen in the fourth picture.
    Attached Images Attached Images

    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Miller Spectrum 375 Plasma Torch

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