At the beginning of each of my shifts, I calibrate my stylus to 0.001 mm. 80% of the time I only use it in position a0 b0. And when it shows 0.002 (or even 0.003) I start wiping everything in the world until it is 0.001. Sometimes it takes a long time. How do you solve this problem?
jjewell When the only common angle we run is A0B0 and the amount of time it would take to calibrate every angle, I don't see how it is a waste of time. Instead of making simple condescending remarks to
Vladimir and myself, why don't you enlighten us.
You didn't answer my question, first of all....NASA ? Remember ? These microns mean nothing to 99% of the industries out there...figure out your uncertainty....add in the machine accuracy, repeatability, the ttp uncertainty....and then you will see the light and understand that worrying about 2 microns is like worrying how far off the earth of its normal axis.... Consider yourself enlightened....and condesended....BUT, if you think it is not a waste of time, have it at...but my 35 years of experience on a cmm in many industries, tells me its a waste of the company's money
jjewell Aerospace/defense (AKA fighter jet parts, not NASA but still supersonic). Now, if you are just going to say things like "uncertainty" "accuracy" ,"and "repeatability" with no proof (facts, studies, hard numbers) then don't even reply. I am interested in this subject for sure but you are losing my interest with every comment. I'm not trying to be a d*** about it but give me something to look into. So far you haven't given me anything.
A-machine-insp I calibrate before every part as well for the same reason
jjewell Idk what you are going on about? you are a demi-guru on here and a member since 2006. I hope that you calibrate your probes..
I don't think you understood what A-machine-insp was saying. I don't think that he was saying he needs .001 micron deviation. He was just pointing out that calibrating before running is good enough as long as it doesn't fail the cal.
Maybe you work in oil and gas with loose tolerances or you work at a forge and don't notice a difference but for me I am doing | TP | .002 | A | B | C | at complex angles.
I pretty much calibrate every time I go to a different program unless it is just A0B0 and that is sufficient unless I am doing something special
