[Ow...] Posted June 29, 2022 Share Posted June 29, 2022 I've attached some interesting history (1987) on Zeiss's development of checking bevel gears with a CMM and some of its advantages over dedicated gear checking equipment. Found this while looking up bevel info on the internet.Bevel Gear inspect compare-1987.pdf Link to comment Share on other sites More sharing options...
[Ch...] Posted June 29, 2022 Share Posted June 29, 2022 Owen, Good info. Bevel inspection has come a long way since the 80s. Zeiss did play a major part in the CMM development. It can now be done with lasers. that being said, a mechanical /composite /roll-check / backlash /mounting distance check is probably still recommended to accompany any analytical CMM inspection for bevel gears. Bevels are a whole 'nother dimension in the gear world, especially spirals. The other big names in the industry are obviously Gleason who have been making bevels since the 1800s, and Klinglenberg. Link to comment Share on other sites More sharing options...
[Ro...] Posted June 30, 2022 Share Posted June 30, 2022 Owen, thanks for sharing that document. I can just add a better picture of the ZEISS UMM 500. For those who are interested I also add a picture of how ZEISS and gear metrology established from the begin in the 1970s until today. And I totally agree with Chris, the two big players in bevel gear industry are GLEASON and KLINGELNBERG, especially regarding production and closed-loop concept. Regarding bevel gear software, the genes of ZEISS RAM are still inside of ZEISS GEAR PRO bevel, the closed-loop concept was running already there and still today. Link to comment Share on other sites More sharing options...
[Ow...] Posted June 30, 2022 Author Share Posted June 30, 2022 I love working with gears but, I'm not a gear expert any means, especially not bevel but, have been challenged with inspecting or reverse engineering gears sporadically off and on for 30 years. I cut my teeth on an old swiss-made MAAG gear tester 30 years ago and then an M&M (Gleason bought out in 2005) and then Gear-pro. The 1st laser gear checking machine I seen was being developed by Brian Slone (https://slonegear.com/) back in 2010 and I've bought some nice composite equipment from him when I worked at a place that actually made gears but, the laser stuff was just too expensive at the time. Thanks for sharing the pictures Roman Gross. Link to comment Share on other sites More sharing options...
[Ch...] Posted July 1, 2022 Share Posted July 1, 2022 Please sign in to view this quote. Roman, Great info as well ... Question how is the accuracy / measuring speed of Prismo Dot Scan with Gear Pro - Is there any technical papers or video of it. I would be interested in this. Thank you Years ago I worked in a lab with an old UPMC850 - that inspected bevel gears to TAPES. Link to comment Share on other sites More sharing options...
[Ro...] Posted July 4, 2022 Share Posted July 4, 2022 Chris, I did a comparison of different metrology systems for gears in 2017. The DotScan was included. The results were presented on the "6th VDI conference Gear Metrology / Verzahnungsmesstechnik 2017". Attached you can find the presentation. Link to comment Share on other sites More sharing options...
[Ro...] Posted July 4, 2022 Share Posted July 4, 2022 PresentationVZMT_2017_Comparison_of_different_metrology_systems_for gear_metrology_EN.pdf Link to comment Share on other sites More sharing options...
[Ch...] Posted July 5, 2022 Share Posted July 5, 2022 Roman, Thanks for the info. Do you have plans to also do a similar study on metal gears and/or bevels as well. I would like to see Zeiss pushing the envelope more in gear metrology. Gear Pro has many useful features other softwares do not, such as Gleason, Klingelnberg, Hofler, etc. With Zeiss being a leader in optics, it should not be to difficult to implement this into gear metrology. If I'm not mistaken, Gleason and Klingelnberg now claim laser gear results to be within about 1-2µ micron to tactile - at least for profile and helix. Certainly the ability to acquire large amounts of cloud data in a short time for color heat map model comparisons has a great benefit over tactile measuring. Thank you again for the info. Keep us updated. Happy Measuring ! Link to comment Share on other sites More sharing options...
[Ro...] Posted July 8, 2022 Share Posted July 8, 2022 I can also share a report about bevel gears in combination with non-contact measurement fringe projection from 2020. Presented at Aachen University WZL Bevel Gears seminar. My personal experience and opinion regarding non-contact/optical gear metrology is not so enthusiastic like other market companions are promoting and "claim" 😉 From my point of view the critical issue is not an optical system in general. The gearing does not fit to that physical measuring principle (in many many cases). Optics require in best case orthogonal access to the surface. Especially for gears this is very often not the case and physically not possible, just think about the root area of gears, reliefs, small gaps, ... I can just recommend everyone to get your own experience with that measuring technology. There exists gears where this measuring technology matches very good, for other (in my opinion the amount is bigger) the physical principle does not fit perfectly. The great advantage is of course the holistic evaluation possibility e.g. with fringe projection, theoretical faster measurement points and so a smaller run time. But 1-2 µm match to "traditional tactile"? My answer: depending, e.g. for splines yes, for 20° pressure angle or smaller? As in so many cases there exists not "that one and only" best solution, the individual measuring part defines the measuring technology. Link to comment Share on other sites More sharing options...
[Ro...] Posted July 8, 2022 Share Posted July 8, 2022 PresentationEN_GWJ_ZEISS_Digital Twin in the First-Part-Right production chain_WZL.pdf Link to comment Share on other sites More sharing options...
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