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I am working on a drawing from Germany and don't want to make any assumptions. Plus, I am using 2019 so new GD&T is not an option. I just want to know how other standards interpret

Thanks, I just looked at the RT position and axis in the RT window and it is relative to base alignment once the RT Axis program is run with the ref spheres. And the X, Y location is different than the Rough RT Location and would be more exact.

I think new GD&T will do as picture shows. At least on Inspect i was looking at ISO for ABC and it was doing tangential plane - only way i found that was when i applied deviations on surface while ISO and Geometry it was showing 0.063mm flatness because of one sprayed hill on that A plane. So i assume you will be the safest if you use new GD&T and then compare it with you approach with alignment then datums to obtain same value.

Attached is picture of how to interpret 2 inline datum features in ASME. Does ISO or DIN interpret this in the same manner? I assume a stepped cylinder set to Outer Tangential would do the trick.

I don't think this will have any effect. It is only for the 'rough' location. you should be fine.

I remember now. If I create a curve aligned with my base alignment Y axis then it works fine. I created a secondary alignment rotated 10 degrees, made a copy of my curve, called it curve #2, and rotated it to the secondary alignment and the vectors and curve looks okay. It's been a while.

Owen, Howdy, sure, these are mainly to tell Gear Pro how to align the K-Tolerance Band to the actual data, there are a few ways. By default with a K-Chart I think the general rule of thumb is the 'highest point of the trace/measurement' typically aligns to the top of the tolerance band. What is shown as upper tolerance option above. There is also the option to align the trace/measurement data of the lowest point which will then 'become' the lower tolerance band alignment. Reference Line is to any arbitrary 0 line to attempt to center the trace I presume. Zero point I think is to start the band where the trace starts at zero it appears. You can also restrict the alignment range allowed so as it looks for a hi point or low point of trace, you can restrict the area it searches for, this is typically reduced to the main profile area around the center /PD allowing for some end relief etc. In most cases unless otherwise specified - upper tolerance should be fine, if unsure consult your Engineering Dept. Good luck !

No offense meant, Pat. Just trying to provide information that might help.

So I have a pre-installed program for our rotary table (RT) After homing the CMM I need to redo the RT axis, the Rough RT Location is a program pre-installed and uses the center bore of the RT for it's position. I have 2 circles in the features column and one is base alignment and the other is CMM alignment, they are within a few microns of each other in X and Y Would one be more ideal to use than the other for establishing the rough location before doing an RT Axis program?

grr... Yeah I got my datums swapped. I described the part I'm working on, not the one you are...

Hello, I would use some other feature in your Base Alignment that is stable to align the spatial orientation and lock the clearance cube. The base alignment should be used to "find the part" and then build your measured/constructed features from there.

Would somebody care to elaborate on this and also explain how the diagram alignments work on the K-charts? I looked in the manual to no avail, and while it seems fairly intuitive, I'm looking for some examples with explanations. Hoping somebody has some documentation on them. TIA

Select from the dropdown - Nominal Geometry Manipulations -> Change Nominal Vectors; then select "Perpendicular to" or "Parallel to", and then select an appropriate feature... using this method never seems to be intuitive to me for some reason, so you may need to play around with it. I always copy the curve before I make any modifications, in case I want to start from scratch without creating a new curve.

Datum B is a width. I width is a feature of size. For Datum C you could grab the maximum coordinate at the apex of the circular end and create a width from each side. To use MMB you might need to do the old school method of creating a circle from the end points of the slot and using that to determine MMC/MMB.

I am still having problems creating 2D curves. I thought I knew how to do this. Why am I getting points facing two different directions, and how do I get the vectors perpendicular to the surface?

Built a new program, and have been running it on repeat to test it out and make sure it is repeatable. I have a pattern of 42 holes that I'm measuring and 2 of them give me this error, there is no collision, it's attempting to take a point on the side of this hole, and then red light, error message. No one at my work knows what this means or how to resolve it. I have tried adding points, removing points, slower speed, faster speed, I've skipped it and come back later and this will happen a couple times then magically work. Any ideas on why its happening or how to fix it?

Hallöchen, ich habe folgendes Problem: Ich soll bei einem Bauteil als Raumausrichtung eine theoretische Ebene verwenden, die sich aus den Mittelpunkten von 3 Passbohrungen und einem Langloch gleicher Güte ergeben. Ich habe die Passbohrungen aus den Richtungen +Y (2 Passbohrungen) und -Y (Passbohrung und das Langloch) jeweils als Kreis angetastet und das Langloch als Symmetriepunkt. Wenn ich nun eine Ebene, die einen +Z Normalvektor haben soll, mittels Rückruf auf die Elemente (3 Kreise und 1 Symmetriepunkt) erstelle ist die Raumachse des Elements zunächst auf -Z. Lasse ich dies so und versuche die Ebene in meinem Basissystem als Raumausrichtung zu verwenden, so steht mein Koordinatensystem, obwohl es in Richtung +Z zeigt, auf -Z in der Anzeige. Stelle ich die Raumachse des Elements von -Z auf +Z um, ändert das nichts. Verwende ich das Basissystem in dem Zustand sperrt Calipso unter Kanten sperren die oberen Kanten, dies lässt sich nicht Rückgängig machen und ich muss das Programm von Vorne neu schreiben. Meine Frage ist nun: Ist eine so erstellte Ebene überhaupt geeignet eine Raumausrichtung zu sein und ist es möglich den Vektor der Ebene irgendwo anders umzustellen, damit der statt in -Z Richtung in +Z Richtung zeigt oder habe ich eine Alternative für die Ebene? Vielen Dank für jede Idee!

Thank you, I could not recall how to do it. No I am not old. Yes I am...😅

Zeiss needs to be aware that the world is changing. Unsolicited emails are always fishy now. Everything about these emails ticks every box on the IT no-no's lists we're trained to. I'm sure thousands of us reported that as spam and deleted permanently. If it's crucial, please resend.

I like all three answers above. In my own practice I align more with Richard's answer.

Create your circle, recall measured points. Check "show all features in patterns / loops. Select your cylinder with a single left click. Right click on that cylinder and select "open" from the context menu. You can now select any of the paths you wish.

What strange callout. Datum B is not a Feature of Size so can't be used as a datum. But if this is what the customer or the engineer thinks he wants, we can give him a result. I'd grab the sides of the slot with a symmetry plane. I'd scan the full R end of the slot for a circle. I'd scan the end of the slot or the face it breaks into, and create an intersection between the symmetry plane and the end face at the same height as the circle. I'd created a 2D line between this intersection and the circle centerpoint. Call this B. Calypso won't be able to apply any MMB etc.

If your geometry allows, you could use self-center points like in a spline to find the start of a land. You could then trace the correct nominal helix with line scans. This would find the start of the land in just a few seconds.

Hi to all. I have a Cylinder with an eleven bore pattern and each has three scans. Can I extract each individual scan separately? If I use "Cylinder1(1)" it includes all three scans, I want the one at the entry of the Cylinder. Then I would set up another Circle for the Middle and a Circle at Depth. Is this possible? Or do I have to create three individual Circles for each depth of scan?

Good morning, is there a way to link CALYPSO reports to an Excel file? I have created a table where I would like to report passed and failed parts, and link it directly to the CALYPSO program. Thank you."