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Z Axis Calibration for Disc Stylus

MatthewHaines
We have recently purchased a 6-way module and I want to experiment with a custom disc probe (bore too small for a star probe). Is it possible to measure undercut widths using a disc probe? (touch down, take a point, pull up, take a point, distance between them etc)

If so, how do you calibrate it in the Z axis so it calculates the maths correctly?

I received an email from Hexagon saying to try turning off probe compensation, doing the features, then add on the disc thickness to the distance result as an assignment. However, I haven't quite got the hang of doing assignments in all my youthfully ignorant glory, so can someone talk me through that?

Even if the undercut widths can't be measured, at least I can learn how to do the assignments (correctly) out of all of this.

We have PCDMIS 2013.

Our programmer left the company, and the 'people upstairs' decided to make me take over. Slight problem with this... I have zero engineering or even programming experience (which they knew). I actually started here as a labourer after Uni, so either this is one h*ll of a lucky break or a worst nightmare. So don't pull any punches, I need to learn and learn fast.
Parents
  • We had some putty, but our components seem to be too complicated for it to work. We are measuring bores with undercuts and holes all over the place. Once we put the putty in (on one side of the bore) it gets trapped in the holes and we can't get it out. We are looking into some technology from Germany that might be able to measure internally using interferometry, and best of all it only costs £100,000 *cough*.

    I am self taught so far, been spending every waking hour just reading up on basics of metrology and engineering. Used the empty office on christmas day to come in and practice programming. I do have training lined up, but I am having to alternate between CMM, vision systems, surface measurer's, interferometry, SPC and overlooking shopfloor inspection (All this with a Philosophy degree). Hopefully this forum can help me in-between training.

    Any help on the assignments aspect? Maybe someone could link me to another thread I have overlooked elsewhere?
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  • We had some putty, but our components seem to be too complicated for it to work. We are measuring bores with undercuts and holes all over the place. Once we put the putty in (on one side of the bore) it gets trapped in the holes and we can't get it out. We are looking into some technology from Germany that might be able to measure internally using interferometry, and best of all it only costs £100,000 *cough*.

    I am self taught so far, been spending every waking hour just reading up on basics of metrology and engineering. Used the empty office on christmas day to come in and practice programming. I do have training lined up, but I am having to alternate between CMM, vision systems, surface measurer's, interferometry, SPC and overlooking shopfloor inspection (All this with a Philosophy degree). Hopefully this forum can help me in-between training.

    Any help on the assignments aspect? Maybe someone could link me to another thread I have overlooked elsewhere?
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