[wi...] Posted June 18, 2020 Share Posted June 18, 2020 How would you go about measuring profile of a taper? Currently we are using "Form" to determine profile but this is obviously not the same. I believe our programmer was not able to use profile when selecting the taper? Thanks for any help! Link to comment Share on other sites More sharing options...
[Cl...] Posted June 18, 2020 Share Posted June 18, 2020 That looks like an ID cone? If so, measure the cone and evaluate it with the surface profile characteristic. Link to comment Share on other sites More sharing options...
[wi...] Posted June 18, 2020 Author Share Posted June 18, 2020 Please sign in to view this quote. Yes ID taper. I briefly looked at the characteristics. It looks like there's only a profile selection. The drop down menu has various ways to evaluate it but each result looks drastically off. Link to comment Share on other sites More sharing options...
[Ri...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. It should be bilateral one result. Link to comment Share on other sites More sharing options...
[Is...] Posted June 18, 2020 Share Posted June 18, 2020 is it in mm?: 0.002 mm Link to comment Share on other sites More sharing options...
[wi...] Posted June 18, 2020 Author Share Posted June 18, 2020 Please sign in to view this quote. Yes, .002mm. Link to comment Share on other sites More sharing options...
[SH...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. Might help you...IMG_20200619_011629.jpg Link to comment Share on other sites More sharing options...
[Ia...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. That is bananas. What probe size and what CMM are you using? Link to comment Share on other sites More sharing options...
[Ri...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. If he doesn't have a Xenos he might have well just wrap it up, and call it a day. Link to comment Share on other sites More sharing options...
[SH...] Posted June 18, 2020 Share Posted June 18, 2020 That should be in inches, he might mistaken.... Link to comment Share on other sites More sharing options...
[SH...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. I remember the golden words of my professor Walter Lewin"measurement without the knowledge uncertainty is meaningless". Link to comment Share on other sites More sharing options...
[Ri...] Posted June 18, 2020 Share Posted June 18, 2020 Please sign in to view this quote. It might be, but typical inch drawings would be shown as ".002" instead of "0.002". In his case, I would hope so. Otherwise, he has 1 micron of directional error allowed. Link to comment Share on other sites More sharing options...
[Is...] Posted June 19, 2020 Share Posted June 19, 2020 Please sign in to view this quote. Well, as first step I would contact the designer to ask what he wants to control. Then you have to check if the machine is able to give a useful result. The error of a Prismo machine is around of 0.0008 (RONt) and there are other factors to consider like the quality of the probe, the scanning method, filters,etc. I have a program with the same tolerance (only for research), so in my case I have noticed the following: - I cannot use filter. - I cannot use probes bigger than 10 mm diameter. - I have to measure at low scanning speed. - The quality of the probe is very important, mainly the material and the connections. - The scanning method could be affected by the change of moving axis of the probehead (mainly on Z). - if the characteristic allows best fit you could decrease the linear uncertainty. - you have to measure several times to estimate uncertainty. - temperature has very big influence if there is no best fit. Link to comment Share on other sites More sharing options...
[Is...] Posted June 19, 2020 Share Posted June 19, 2020 Please sign in to view this quote. That profile is basically the max deviation ×2 from the Nominal geometry. Since you don't have the reference values in the drawing, I would apply bestfit (ask to the designer). Link to comment Share on other sites More sharing options...
[Ma...] Posted June 19, 2020 Share Posted June 19, 2020 Please sign in to view this quote. Sorry, but i think that you have a wrong drawn dimension in attached picture. In Bilateral asymmetric interpretation should be dimension drawn from middle of tolerance size. Please correct your picture for future. It can be confusing, how to set up this in Calypso ( which is interpreting just like your picture ) Example: 1,0 UZ -0,1 - Calypso: 1,0 / 0,4 or 1,0 / 0,6 depends on inner / outer. IMG_20200619_011629.jpg Link to comment Share on other sites More sharing options...
[SH...] Posted June 19, 2020 Share Posted June 19, 2020 Please sign in to view this quote. Ok, I will check it... Link to comment Share on other sites More sharing options...
[wi...] Posted June 19, 2020 Author Share Posted June 19, 2020 Please sign in to view this quote. Contura G2. Im aware of the accuracy limitations. 🤣 Link to comment Share on other sites More sharing options...
[wi...] Posted June 19, 2020 Author Share Posted June 19, 2020 Please sign in to view this quote. Typically 1.5mm Ball and Contura G2 Link to comment Share on other sites More sharing options...
[wi...] Posted June 19, 2020 Author Share Posted June 19, 2020 Please sign in to view this quote. This tolerance is Standard on HSK Tapers. Link to comment Share on other sites More sharing options...
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