[Lo...] Posted August 12, 2020 Share Posted August 12, 2020 Hello everyone, Some times when I setup a program and run it on a part set up on a fixture, it will run perfectly with no issues, usually. Then when I go to set the next part on the same exact fixture it is bottoming out. It seems to do this most when checking the diameter of a bore. Usually the height of the bore isn't very tall maybe .125-.250 tall, so i try to probe in the center as best as I can. But when I go and run the first part it does fine. But sometimes when I put the second or third part it will bottom out on the fixture, and start to probe well below where the original probe points are at. Why does this happen? Thank you. Link to comment Share on other sites More sharing options...
[SH...] Posted August 12, 2020 Share Posted August 12, 2020 Please sign in to view this quote. - Link to comment Share on other sites More sharing options...
[To...] Posted August 12, 2020 Share Posted August 12, 2020 Please sign in to view this quote. Lou, Are you running a base alignment with each part or using current alignment? If the latter, I would suggest running the base alignment with each part as the position of the part in the fixture might vary. If you are running the base alignment with each part, then there might be a lot of variation between the parts. You could use a formula to control the Z depth relative to the plane at the top of the hole. Or, exclusively to circles, you can select None button in circle feature window. see pic below. Link to comment Share on other sites More sharing options...
[Ad...] Posted August 12, 2020 Share Posted August 12, 2020 Did you check base alignment to zero? Link to comment Share on other sites More sharing options...
[SH...] Posted August 12, 2020 Share Posted August 12, 2020 Please sign in to view this quote. Creating a loop in the base alignment will not solve this problem?? Link to comment Share on other sites More sharing options...
[Lo...] Posted August 12, 2020 Author Share Posted August 12, 2020 Please sign in to view this quote. Tom, I am noticing a lot of variation in our parts. But whats happening is that it's actually bottoming out on the fixture it's self, not the part. I use the fixture as a plane, and set -Z clearance right below that, I have tried varying heights with the -Z plane some times it works and sometimes it doesn't. Thank you. Link to comment Share on other sites More sharing options...
[Lo...] Posted August 12, 2020 Author Share Posted August 12, 2020 Please sign in to view this quote. Tom, I use the base alignment. I am noticing quite a bit of variation in our parts. But what is happening is that it is bottoming on the fixture. I will use the fixture as a plane. And when I setup the clearance plane for -Z I have tried different heights 95% of the time it works fine. I am still a rookie, so I am not sure if it's something I have done or not. Thank you Link to comment Share on other sites More sharing options...
[Lo...] Posted August 12, 2020 Author Share Posted August 12, 2020 Please sign in to view this quote. Adam, I will check this out as well. Thank you. Link to comment Share on other sites More sharing options...
[Da...] Posted August 12, 2020 Share Posted August 12, 2020 Are you checking features below the Z- plane? Link to comment Share on other sites More sharing options...
[Ma...] Posted August 12, 2020 Share Posted August 12, 2020 Any possibility to get to some reference point from where you can use formula for update measured coordinate? Like that plane, then in strategy calculate start position. Link to comment Share on other sites More sharing options...
[Ri...] Posted August 13, 2020 Share Posted August 13, 2020 Please sign in to view this quote. In these cases, you could have an automatic start alignment that measures a Z point first before measuring the Base Alignment. I've done this on parts where there is more than 3mm difference in the initial thickness. As long as you give it plenty of clearance, retract, and search distance you could search for whatever difference you are seeing. Link to comment Share on other sites More sharing options...
[Ma...] Posted August 13, 2020 Share Posted August 13, 2020 Of course that Start alignm. is way to go, but author of this topic have problem with piece position onfixture. If he don't use alignments and just measure some coord independant chars. then he can help himself with some ref. touch points 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