[Me...] Posted June 4, 2018 Share Posted June 4, 2018 I'm taking surface points around an internal profile of a gage and no matter what number I use for the clearance and retract value, the stylus won't clear the other side of the profile. It goes in to take the point on the profile, but it keeps hitting the center hub where it's at it's narrowest. Have no problem with the remainder of points once it gets past these two narrow areas. Any suggestions would be gratefully appreciated. Thanks in advance.2018-06-04 08_45_38-.jpg Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/ Share on other sites More sharing options...
[Da...] Posted June 4, 2018 Share Posted June 4, 2018 Try setting the clearance distance to 0.000, then set Retract to just a few thousandths. What size probe are you using? Do you have Curve? Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118352 Share on other sites More sharing options...
[Me...] Posted June 4, 2018 Author Share Posted June 4, 2018 I'll try that. I'm using a 1mm probe and I don't have curve. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118354 Share on other sites More sharing options...
[Da...] Posted June 4, 2018 Share Posted June 4, 2018 You only have .010 clearance set retract to about .005. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118356 Share on other sites More sharing options...
[No...] Posted June 4, 2018 Share Posted June 4, 2018 If you're using a VAST or VAST XT (not XXT) head, forward deflection may be a possible reasen too. Above a certain speed these heads first move the probe in the desired direction before the head follows (to detect collisions as early as possible). In narrow spaces this can sometimes lead to unwanted collisions. If this is the problem, lower the speed until deflection switches off. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118358 Share on other sites More sharing options...
[Da...] Posted June 4, 2018 Share Posted June 4, 2018 Please sign in to view this quote. Good point Norbert !!! You can use the probing dynamic to slow down the approach. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118360 Share on other sites More sharing options...
[Me...] Posted June 4, 2018 Author Share Posted June 4, 2018 We're still in the dark ages here. I'm using a MH20i head with an older version of Calypso. I tried setting the clearance value to .010 and the retract to .005, but that's not working either. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118362 Share on other sites More sharing options...
[Da...] Posted June 4, 2018 Share Posted June 4, 2018 clearance distance to ZERO (0.000) Retract to .005 Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118364 Share on other sites More sharing options...
[Me...] Posted June 4, 2018 Author Share Posted June 4, 2018 Tried that. Still the same. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118366 Share on other sites More sharing options...
[Ow...] Posted June 4, 2018 Share Posted June 4, 2018 Is the point vector('s) pointing in the correct direction for the surface points you're having issues with? Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118368 Share on other sites More sharing options...
[Da...] Posted June 4, 2018 Share Posted June 4, 2018 Sorry Mike, I am not familiar with that configuration. It may have some built in parameters. Maybe someone else here can help you. 😕 Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118370 Share on other sites More sharing options...
[Me...] Posted June 5, 2018 Author Share Posted June 5, 2018 Yes they are. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118372 Share on other sites More sharing options...
[Me...] Posted June 5, 2018 Author Share Posted June 5, 2018 Thanks everyone for your efforts in trying to help me out with this. Since the distance from the top of the gage to the top face of the center hub is .030", I was able to move the points up so that they would avoid hitting the hub. I thought maybe there might be something I was missing in my clearance/retract settings. You guys have a wonderful day. Link to comment https://qualityforum.zeiss.com/topic/20806-clearanceretract-distance-issues/#findComment-118374 Share on other sites More sharing options...
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