Hello all,
Thanks for entering my thread.
We are looking for a low cost cad/cam software for shop use. The software features we need, drafting, 3D machining, translators for .stp. .igs, parasolid. If possible, the ability to work with native Unigraphics and Catia files. It will also have to be...
That was my bad. The feature control frame should have the diameter symbol. But I am not sure I understand how nothing else is needed. Shouldn't there be 2 basic dimensions to calculate the true position.
Yes, the master definition is the model. We also have a note stating that the internal features have a postional tolerance of .060 with respect to datums A B and C.
Hello all,
We have a GD&T postional tolerance call out that we need help with interpreting. The feature control frame uses 2 datums, and 1 of the 2 datums,(datum A), is the surface that the hole is on. My question is where do we get the second deviation from for the true position formula...
Hello all,
I am looking for some tips on machining .250 thick AMS-DTL-22499 Comp 3 Type 2 Class 2. Dilling and milling this material without it delaminating has been a challenge,and waterjet is not an option for us. Any thoughts on the type of tooling, feeds and speeds, processes (helical...
Hello all,
I need some help on dimensioning and inspecting a hole location with postional tolerance. Please see drawing. First is the proper use of GD&T, and if it is, how would we measure from datum B? I understand the concept of true position when the datums are all perpendicular to the...
Hello all,
We are looking for recomendations on tooling for machining 6061, 7075, 2024 in the O condition. We have up to 24000 rpm available on a variety of CNC machines. We are currently using OSG Blizzards, and Onsrud single flute up cuts. Both work fine until we get into the O materials. Any...
Has anyone had any experience with Sarrett Altissimo, Mitutoyo QM, and the Trimos V+ electronic height gages? What are the pro's/ con's, user friendly? etc.
Any input would be appreciated.
Is it ok to have 2 different positional tolerances on the same slot. If this is ok, how do you calculate the deviation without a cmm? See attached file.
Thanks
Pmarc, Thanks for the formula. I just have one question. With a 2 datum formula you multiply the result by 2. Do you multiply this one by 3.
Thanks again.
Powerhound and Belanger thanks for your responses.
Belanger,I understand that these measurments can be done. What I do not understand is the formula you would use to calculate the errors of measurement to 3 datums. Generally I am used to seeing 1 of the datums located perpindicular to the hole...
