[Da...] Posted August 26, 2020 Share Posted August 26, 2020 Got a tough one. I have a customer who wants a size over a .750 pin that is contacting an od cylinder and a conical surface that's concentric to the cylinder, to the back end of the part ( plane). I've already worked out various intersection lengths and intersection positions, so the part is checked and good, BUT, he wants the " over the pin reading " included if I can...so Thems fightin words to me 🤣 🤣 Did this a long time ago but it involved planes , not cylinders and cones. I just have to get to the center of a circle that's tangent to both ACTUAL surfaces. Link to comment Share on other sites More sharing options...
[Cl...] Posted August 26, 2020 Share Posted August 26, 2020 Got a visual of said scenario? Link to comment Share on other sites More sharing options...
[Da...] Posted August 26, 2020 Author Share Posted August 26, 2020 Here's a clipIMG_20200826_131228 (002).jpg Link to comment Share on other sites More sharing options...
[Ma...] Posted August 26, 2020 Share Posted August 26, 2020 This is ideal for curve and fit circle to curve. Othervise it can be done with some math 😎 Link to comment Share on other sites More sharing options...
[Cl...] Posted August 26, 2020 Share Posted August 26, 2020 Why wouldn't the Size > Distance > Caliper Distance (Plane/Center to Max Circle) work? Link to comment Share on other sites More sharing options...
[Ch...] Posted August 26, 2020 Share Posted August 26, 2020 I've never used the "Circle in contour fit" construction but would that work? Recall the features into the curve. Link to comment Share on other sites More sharing options...
[Ri...] Posted August 26, 2020 Share Posted August 26, 2020 Please sign in to view this quote. This or measure two lines, and create a Tangent. Then you can use the Caliper Tool. Link to comment Share on other sites More sharing options...
[Ke...] Posted August 26, 2020 Share Posted August 26, 2020 I would love to know how a comparison between the Tangent method vs Curve in contour fit.... Tangent has worked for me 100% of the time; Curve in contour fit worked the one time I used it, but didn't seem as repeatable. Hopefully these are more "fightin' words" 🤣 Link to comment Share on other sites More sharing options...
[Ri...] Posted August 26, 2020 Share Posted August 26, 2020 Please sign in to view this quote. My experience has been that it depends on how "smooth" your Curve is. If it's pretty rough then it has a difficult time calculating the fit. Link to comment Share on other sites More sharing options...
[Ma...] Posted August 26, 2020 Share Posted August 26, 2020 For me I don't have experience with tangents. I thought it is for tangent between two circles. Link to comment Share on other sites More sharing options...
[Cl...] Posted August 26, 2020 Share Posted August 26, 2020 Please sign in to view this quote. I agree. I switched to the tangent method from Contour in best fit, due to repeatability issues. Link to comment Share on other sites More sharing options...
[SH...] Posted August 26, 2020 Share Posted August 26, 2020 Please sign in to view this quote. I have used circle in Contour best fit but as you mentioned it is not repeatable. I think it's good tool but we don't how to fire it in all cylinders. Link to comment Share on other sites More sharing options...
[SH...] Posted August 26, 2020 Share Posted August 26, 2020 Please sign in to view this quote. What is Max circle?. a circle with formula or theoretical circle? Link to comment Share on other sites More sharing options...
[Cl...] Posted August 26, 2020 Share Posted August 26, 2020 I think that Contour in best fit has too many ingredients that go into it's construction. The Tangent function is simple. Link to comment Share on other sites More sharing options...
[Da...] Posted August 26, 2020 Share Posted August 26, 2020 A job for curve Link to comment Share on other sites More sharing options...
[Za...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. Link to comment Share on other sites More sharing options...
[Cl...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. Link to comment Share on other sites More sharing options...
[An...] Posted August 27, 2020 Share Posted August 27, 2020 Things don't seem always to be complicated. See attached.Contribution_27_08_2020_a.pdf Link to comment Share on other sites More sharing options...
[Er...] Posted August 27, 2020 Share Posted August 27, 2020 There is no repetabillity issues with circle in contour, as a feature. As Shomaker mentioned, If you cant get it to repeat, then you should have a look at your curve, its most likely poor. To get really good curve measurements can many times be a very time consuming job. It takes a little more effort then just slicing, throw in some points and apply suggested filter.... Link to comment Share on other sites More sharing options...
[Da...] Posted August 27, 2020 Author Share Posted August 27, 2020 So, this is a cross section of a cone and a cylinder. Can't really recall the three circles of the cylinder into a cross sectional curve. Same with the 4 circle paths of the cone. There is also no model. Link to comment Share on other sites More sharing options...
[SH...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. Lot of options.... Link to comment Share on other sites More sharing options...
[Cl...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. Curve scanned with CFS.0004 point spacing (1100 points) over the contour (40 degrees). Filter setting (Spline 0.2500 mm), Outlier settings (Inside = 3/Outside = 3), only outlier. What's missing here? All done by Zeiss, and won't repeat worth a crap. I switched it to Tangent, repeats perfectly. Link to comment Share on other sites More sharing options...
[SH...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. I got better results when I masked the points in unwanted area. We all so think about evaluation wheather it is mathematically fit a circle or not.. Link to comment Share on other sites More sharing options...
[An...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. The option is right if the probe diameter is according the basic dimension. Sorry,my fault! Link to comment Share on other sites More sharing options...
[SH...] Posted August 27, 2020 Share Posted August 27, 2020 Please sign in to view this quote. I have one request, your are doing great works but sometimes it is difficult to understand without writen explanation. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in