I'm trying to calibrate a 1mm (ball dia) x 3mm (length) star probe on a 25mm sphere. The probes want to rotate around that sphere at the equator, but it's too small to get good hits. What are the settings that I can input to move where the probes take their hits?
You can change your start and end angles in the calibration dialog box so that it probes less of the sphere. Or, I used a 5X50 stylus as a cal sphere....
You can change your start and end angles in the calibration dialog box so that it probes less of the sphere. Or, I used a 5X50 stylus as a cal sphere....
That is interesting. I have never thought of using a stylus as a cal sphere. We calibrate our cal sphere so idk if I would take that route unless I had a supermic to get the exact diameter. I like that idea though.
Scott Reiff I would start by changing your start and end angles. Unless you get a smaller cal sphere unfortunately that is probably your only option.
That is interesting. I have never thought of using a stylus as a cal sphere. We calibrate our cal sphere so idk if I would take that route unless I had a supermic to get the exact diameter. I like that idea though.
Scott Reiff I would start by changing your start and end angles. Unless you get a smaller cal sphere unfortunately that is probably your only option.
I used to work a lot with a Renishaw Equator. That machine used an M5 Star Stylus as it's qualification sphere. It was weird to calibrate a 30mm disc probe on 5mm Sphere.
One of the guys here used to work at Renishaw and he says that the roundness precision of their standard styli tips is practically the same as their qualification spheres. I don't know about the diameter tolerance though. I agree, I would want a super accurate measurement on that if I were to use it as a reference.
Thanks for the tip. I'll try the 5x50 if I can figure out how to set it up a calibration sphere. Being new to PCDMIS and having never taking formal training, I haven't done this yet.
You can change your start and end angles in the calibration dialog box so that it probes less of the sphere. Or, I used a 5X50 stylus as a cal sphere....
I like your idea of using a 5x50 to calibrate the star probe (we use the same star probe as mentioned above), but if the star probe is my second probe in the program and the first one is my Number 1 (3x30 reference probe), then the calibration of the Number 1 would still have to be done on the same 5x50 probe, right?
You 'Could" theoretically make a separate probe file and calibrate the 3x30 probe at location 1 with a normal cal sphere independently from the star probe, but you WILL be introducing uncertainty between the probes and calibration methodologies.
