Thursday and Friday were fun breaks from work as usual. I spent 11 hrs on Thursday and 12 hrs on Friday helping with the inspection of two welding fixtures for JLG. We hired in a laser (with operators) to measure the two fixtures. The laser could consistently measure thousandths of an inch on a fixture over 100 in long. One of my primary responsibilities was running a spreadsheet I had created to compare outputs from the laser to to client specifications. We would then look at the values out of spec and decide how to bring the fixture into spec with minimal machining. I liked the puzzle of it all.
I also was able to use a little trig to help confirm Chris’s supposition that a set of bad data was do to a rotation in the laser’s coordinate system. (Rather than setting up the laser to read the midpoint on a line between two points, the operators had accidently set up the laser to read the intersection of the two points. Since this point was one of the six used to create the XYZ coordinate system of the laser’s readout, all the values in the X and Z directions were skewed by the sine or cosine of about half a degree.) Sweet yes, trig!
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