[An...] Posted September 8 Share Posted September 8 Hi! Having a discussion about the appropriate way to measure the distance between planes. One party says to just pick the Z direction. The other says to use the cartesian distance. The cartesian distance happens to match the supplier. I don't fully understand how the distances are calculated in the the magic box that is calypso... Any insight would be greatly appreciated! 🙂 Link to comment Share on other sites More sharing options...
[Za...] Posted September 8 Share Posted September 8 Cartesian is almost always the correct answer with plane to plane distances. the important nuance here is if the two planes are differently sized, to select the smaller plane for feature1 and the larger plane for feature2. the evaluation is from the center of feature 1 perpendicular to feature 2. below is an illustration citing the reason for small feature as feature1. 4 Link to comment Share on other sites More sharing options...
[An...] Posted September 8 Author Share Posted September 8 Thank you! Link to comment Share on other sites More sharing options...
[Ma...] Posted September 8 Share Posted September 8 We often use caliper distance to cover min-max. Then cartesian distance is a good one. I would never use just XYZ from features - mostly it's one corner on planes or origin of cylinder. If you have intersections or circles, then reporting XYZ is ok if it's according to drawing ( like from center of block and you would have to place theoretical feature into origin of that alignment ) 3 Link to comment Share on other sites More sharing options...
[Cl...] Posted September 8 Share Posted September 8 Keep in mind how each plane is being evaluated as well. Outer Tangential/Inner Tangential/LSQ. Each giving you the min/max/average distance respectively. 1 Link to comment Share on other sites More sharing options...
[Ed...] Posted September 9 Share Posted September 9 Hi, Look at this, this one is very helpful 🙂 LNL Distance.pdf 2 Link to comment Share on other sites More sharing options...
[na...] Posted September 9 Share Posted September 9 (edited) Please sign in to view this quote. If you have features of size, you can use Two-point distance characteristic. With this of course expect rolling eyeballs from people not knowing what to do with 2 results. Edited September 9 1 Link to comment Share on other sites More sharing options...
[Ow...] Posted September 9 Share Posted September 9 Please sign in to view this quote. Edgars Putelis, them Lunch & Learn documents put together by Ryan Stauffer at J&H Machine Tools 20 years ago (2005) were instrumental in my beginning years of learning Calypso. So full of color, well defined arguments and boredom breaking cartoons. Ryan works for Zeiss now and last I heard he was helping/teaching training classes in Tennessee somewhere as part of the Zeiss academy. https://portal.zeiss.com/iqr-academy/overview 1 1 Link to comment Share on other sites More sharing options...
[Ri...] Posted September 11 Share Posted September 11 You can use "Caliper Distance" to see the changes in measurement when using "Center", "Minimum" and or "Maximum". This can help you understand Cartesian values. I make my measured characteristic based on how the part is machined. Example: If two or more planes are machined in the same operation, same finish, same or similar tooling, and no fixture changes, I primarily use Caliper Distance and "Center". The odds of the planes being out of perpendicularity is near zero. Anytime you question a method you use, manually layout the part to see which method reports the true value. 2 Link to comment Share on other sites More sharing options...
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