Same Probes Different Programs

You need to answer the "has the sphere moved" question correctly and use a stylus on all the spheres correctly.

This is easiest to remember if you (at least in your head) think of ONE position on ONE stylus as being the master or god.

You qualify that stylus/angle FIRST EVERY TIME you turn the cmm controller on or move the qualification artifact (qual sphere), and tell PcDmis that the sphere moved (DCC or manually find it, doesn't matter).

EVERY other stylus you qualify, the answer is NO.

If you are answering the yes/no prompt incorrectly, or using a probe after saying yes that wasn't ACTUALLY qualified on THAT sphere before, you will never get good results.

Don't shut off the controller every night, it will help you if you can leave the sphere in place. But you have to be EXTREMELY OCD about that yes/no and which probe/angle you use when saying yes.

This is not something that you can say, aw screw it just this once, I'm in a hurry.

EVERY TIME.

Or you get bad results and get to redo the rack over and over and over.

Auto-calibration and parameter sets will be your friend in resolving this issue.
Either with excel or a text file, note the probefile name and the probe angles used in each program. With excel, you can remove duplicates quite easily to see what tips are used between both programs then you can generate your parameter set(s) to be individual part specific or you can have a multi-part version to reduce your time.

FYI - to save time searching through your program go to Edit>Preferences>Edit Window Layout, uncheck all but Show Tips. Then you can review the probes/angles used much faster.
Just remember to go back and reselect the other options so alternate users don't think something CRAZY has happened to the program. (or later opened programs as these selections are not program specific)

Is there an opportunity to make an autocalibrate program for all tips and run it on an off shift or weekend?

I prefer to go with the Master prtobe method (much like Caemgen​ suggested).

However there is an option to keep, and use, different probe files with the same names.

Edit > Set Search Path > select Probe Directory.

If you tick 'Search current directory first' you can keep the probe files and part program together in their own folder.

But I wouldn't recommend it...

Yes but the problem is i have to manually change probes each time calibratin Thats why i have to do them in my shift. I am actually working on getting up a probe rack so hopefully it will help in future with auto calibration.

So i made a small T20_4X10 master probe. So if i calibrate my probes based on my master probe, if i am using same probes in multiple program and only calibrate angles from one particular program will it affect on angles used in other programs ?

If you qualify a master probe saying the qual sphere moved, PcDmis will store data about the stylus AND about where the qual sphere is in relation to the machine with that stylus.

Then, saying no on every other stylus, it qualifies those stylii based on the qual sphere being where it was on master.

Doing this will make the probe angles relate to each other regardless of which program they are used in.

The stylus qual data is in the probe file, not in the program itself.

If it thinks the sphere moved between tips 1234 and 5678, then checking a part with 5 6 7 and 8 will relate perfectly, but you pull 3 and get garbage. And vice versa.

The real problem is when this amount is so small you don't realize there is an error and report parts as being good/bad without knowing the inspection was in error.
This is the main reason to be so stringent about probe qualification.

It is no real issue, just a waste of time, when the part reports being .020" off in X on half the dimensions, you know something is wrong and recheck.
When the CMM is reporting half the dimensions being off .0015" on X, it could be the different between rejecting good parts or, worse, accepting discrepant parts.

So, as long as you qualify that T20_4X10 and say the sphere moved Yes, then qualify everything else without turning off the controller or actually moving the sphere, yes, it will not matter what probe file is opened in what program, you will get good, relating results.

Try not to use the T20_4X20 on part inspection and don't take it apart if you can absolutely avoid it. It is the master, it should only be used to qualifying styli.

Thankyou very much. And yes i am using T20_4X10 as a master probe and not for inspection.