[Jo...] Posted August 7, 2023 Share Posted August 7, 2023 Can anyone tell me how you would program Composite Profile Tolerancing in CALYPSO? Is there a way to program them under one profile characteristic, or would you have to do them separately? And what do you do when it is 2X? will you then have to program in 4 separate profile characteristics? Please see attached image and give your opinion on the best way to get accurate results for the composite profile tolerance. Thanks in advance!!Composite Profile Tolerancing.jpg Link to comment Share on other sites More sharing options...
[Ri...] Posted August 7, 2023 Share Posted August 7, 2023 What is Note 2? Link to comment Share on other sites More sharing options...
[Da...] Posted August 7, 2023 Share Posted August 7, 2023 Please sign in to view this quote. Confirm that this is ISO GPS first. Because it would made a difference in this case. Link to comment Share on other sites More sharing options...
[To...] Posted August 7, 2023 Share Posted August 7, 2023 Please sign in to view this quote. Does ISO have "composite" DRF's? Link to comment Share on other sites More sharing options...
[Da...] Posted August 7, 2023 Share Posted August 7, 2023 Please sign in to view this quote. No, there are no composite requirements in ISO however it isn't forbidden to write it like in OP and it still means single segment. Link to comment Share on other sites More sharing options...
[To...] Posted August 7, 2023 Share Posted August 7, 2023 Correct dimensioning for ASME https://www.gdandtbasics.com/composite- ... olerances/ Link to comment Share on other sites More sharing options...
[Jo...] Posted August 8, 2023 Author Share Posted August 8, 2023 Please sign in to view this quote. It is ASME Y14.5 Link to comment Share on other sites More sharing options...
[Jo...] Posted August 8, 2023 Author Share Posted August 8, 2023 Please sign in to view this quote. It's a "Do not rack" note Link to comment Share on other sites More sharing options...
[Jo...] Posted August 8, 2023 Share Posted August 8, 2023 Please sign in to view this quote. ASME Y14.5-2018 7.19 SIMULTANEOUS REQUIREMENTS A simultaneous requirement applies to position and profile tolerances that are located by basic dimensions related to common datum features referenced in the same order of precedence at the same boundary conditions. In a simultaneous requirement, there is no translation or rotation between the datum reference frames of the included geometric tolerances, thus creating a single pattern. Figures 7-46 and 7-47 show examples of simultaneous requirements. If such an interrelationship is not required, a notation such as SEP REQT should be placed adjacent to each applicable feature control frame. See Figures 7-48 and 10-54 and para. 10.5.4.2. This principle does not apply to the lower segments of composite feature control frames. See para. 10.5.4.2. If a simultaneous requirement is desired for the lower segments of two or more composite feature control frames, a notation such as SIM REQT shall be placed adjacent to each applicable lower segment of the feature control frames. Simultaneous requirements are not applicable and cannot be invoked by notation on single-segment or multiple-segment feature control frames when the datum references are different, the datum references appear in a different order of precedence, or the applicable material boundaries are different. I find it odd, the SR and location are not "Basic" dimensions on print. By 7.19 I think the upper tier controls both as a pattern, then the lower tier controls individual shape/location to Datum A Link to comment Share on other sites More sharing options...
[Je...] Posted August 9, 2023 Share Posted August 9, 2023 Composite tolerancing - The primary first tier controls location of each feature to the datums. The second and subsequent controls pattern of features to each other and orientation of pattern to datums only. The second tier of this composite controls the location of the scallops to each other and that pattern much be perpendicular to the axis of A. "Centered about -A-" would not be controlled in the second tier as it does not control location to a datum in any way. Only in the first. Also, this isn't a "rule of simultaneous requirements" application either. ROSR does not apply to secondary or subsequent composite tolerance controls. The best method to control this is with a "bore pattern" position on all features. Use the same structuring for both segments (build the first and copy/paste/edit DOF constraints). The first will constrain 5 DOF, allowing rotation in a single axis (around -A-). The second tier will control 2 DOF and allow full XYZ translation in all axes and rotation in 1 (around -A-) Link to comment Share on other sites More sharing options...
[Ri...] Posted August 9, 2023 Share Posted August 9, 2023 Please sign in to view this quote. Jeff, Given that 2023 GD&T package doesn't have a Bore Function Pattern option like the legacy option, do you know how it is going to be addressed moving forward? As far as I am aware, there is not an easy/intuitive way to perform Composite Tolerances inside of Calypso 2023 using the new GD&T package. Link to comment Share on other sites More sharing options...
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