[Jo...] Posted October 25, 2023 Share Posted October 25, 2023 have a prototype part that i need to count serrations (spline teeth really). Company not buying gages which is normally used for this. teeth are aprox .0165" and 279 of them. Very small. Was hoping to just scan 360 degrees then use the outliner to count but my mind is just going blank at the moment. Any thoughts? Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/ Share on other sites More sharing options...
[Ch...] Posted October 25, 2023 Share Posted October 25, 2023 Try using a 360 degree scan then evaluate with waviness. You should be targeting a UPR of 279 I believe. I have no idea if this will work, but it sounds like it should. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28394 Share on other sites More sharing options...
[Jo...] Posted October 25, 2023 Author Share Posted October 25, 2023 will give it a try as soon as a machine opens up Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28396 Share on other sites More sharing options...
[Je...] Posted October 25, 2023 Share Posted October 25, 2023 Wouldn't it be easier to just calculate it? Measure a 3 or 4 point circle on the spline using self-center points (the method is mentioned in a similar topic viewtopic.php?t=11846) Then take the distance between two spline teeth using self center points. Use these points to establish the angular distance and divide it into 360. This is but one method and lots of alternative routes can come from it as well. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28398 Share on other sites More sharing options...
[Jo...] Posted October 25, 2023 Author Share Posted October 25, 2023 only problem is cutter wear... such a small tooth that can't see by eye. Just wish they get a gage and problem solved. Also looking at gear pro measuring span width .... if span width is good, and runout is good, no way there will be extra teeth or less teeth. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28400 Share on other sites More sharing options...
[Jo...] Posted October 25, 2023 Author Share Posted October 25, 2023 Please sign in to view this quote. so that didn't work. showed a number of 242 not 279. I will keep playing around and maybe get lucky.... Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28402 Share on other sites More sharing options...
[Da...] Posted October 26, 2023 Share Posted October 26, 2023 Remember, if you want the Fourier analysis to show 279 UPR, you will need at least 279 x 7 = 1953 points or better more. 7 points are needed minimum to define a wave. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28404 Share on other sites More sharing options...
[Jo...] Posted October 26, 2023 Author Share Posted October 26, 2023 Please sign in to view this quote. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-121338 Share on other sites More sharing options...
[Je...] Posted October 26, 2023 Share Posted October 26, 2023 Please sign in to view this quote. Oh, GearPro for the win! I didn't realize you had GearPro. That is definitely the most appropriate solution. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28406 Share on other sites More sharing options...
[Jo...] Posted October 26, 2023 Author Share Posted October 26, 2023 still would be nice if i could just scan and then count the "bumps", with no calculations. Gear softwares...no matter how nice....still are not a direct measurement and usually off due to many factors, like runout. Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28408 Share on other sites More sharing options...
[Je...] Posted October 30, 2023 Share Posted October 30, 2023 Please sign in to view this quote. . Creative idea of the month. . Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28410 Share on other sites More sharing options...
[Ma...] Posted October 31, 2023 Share Posted October 31, 2023 Now i don't know how small teeths are, but what about scan 360° curve, then use 3D line with dividing? Then you know how many lines you have and you just visually check position of line on curve Link to comment https://qualityforum.zeiss.com/topic/6924-looking-for-ideas/#findComment-28412 Share on other sites More sharing options...
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