Same Probes Different Programs

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...

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...

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.