I am using a 0.7X20mm probe (long thin shaft). What are the best calibration settings for this probe? It keeps failing calibration for a few tip angles (.0004 deviation). I am using DCC+DCC 31 hits (5 levels) with a start angle of 10 and end angle of 90.
Sorry but I'm going to piggyback on this string. I just ordered a 0.5 x 20 stylus that I'm going to put on a Leitz LSPX1C probing system of an Optiv vision system. What optional probe settings are you folks using for this configuration?
Personally i tried this tip in our Optiv M machine but couldn't use because the deviation was too high (about 0.01mm), even if the touchspeed was 1mm/sec. But i have a touch trigger probing system, the HP-TBe, with your's, i think it will works.
Yep. We have .5mmx20mm probe that gets qualified at 1% touch speed Renishaw PH10T. At the other CMM that's got scanning head .5x45mm gets qualified at 0.5% speed because we notices significant bending during calibration. It works well now.
Is the 10° off the equator enough to not shank? With my .3, it is on a .2mm stem that is short and into a .5mm stem. If it don't stay far enough away from the equator, that corner of the .5mm stem hits the sphere before the stylus tip on the "near equator" hits.
I'm at 13°. I can't remember if that was NECESSARY or if I was clear at something else (like 10°) and put in some buffer.
If the stylus isn't build perfectly, the one I have anyway, and the .2mm stem is off-center to either the ruby or the .5mm stem, then the angle wouldn't be the same all around to clear. So the 13 probably has some buffer in it, I doubt I wanted to watch every single hit all the way around to see if it cleared.
I probably moved it to get one hit clear and then tossed a couple more degrees on it to ensure I don't have a problem down the road.
Well 2mm/sec is definitely way too fast...both of my machines failed for countless tip angles with this speed (.0004-.0005 STDDEV). I am going to use 0.5mm/sec on both machines. Hopefully that keeps it to .0003-.0004 STDDEV. It looks like we measure with 2mm/sec hitspeed. I suppose we should turn it down to 0.5mm/sec whenever we call up this probe in our programs.
I am having such trouble with this. My 4X5X4 machines calibrated these probes perfectly fine but my 7X10X7 machines are both having issues.
I wonder if my problem is that I'm using a green module (HP-TM-MF)...pretty sure it's supposed to be yellow for a probe of this length...my 4X5X4 machines have yellow modules
No one has mentioned it yet so I'll just throw it in here, for any probe tip smaller than 1mm (so the 0.7 & 0.5) you can try selecting the "Default" option/radio button (instead of User Defined) under the Calibration Mode section. PC-DMIS will recognize the size of the probe tip is under 1mm and adjust the start and end angles accordingly so the probe doesn't shank out. May or may not help, but might be worth a shot if you're trying to explore all your options.
No one has mentioned it yet so I'll just throw it in here, for any probe tip smaller than 1mm (so the 0.7 & 0.5) you can try selecting the "Default" option/radio button (instead of User Defined) under the Calibration Mode section. PC-DMIS will recognize the size of the probe tip is under 1mm and adjust the start and end angles accordingly so the probe doesn't shank out. May or may not help, but might be worth a shot if you're trying to explore all your options.
Good point.
So I figured it out! It was the module force (wrong color). The smart people that worked here last threw random colors on random probes. I played musical chairs and everything came in tolerance (within.0002 STD DEV).
