Hello everyone,
This is a duplicate thread that I have originally posted on CMM board and someone suggested me to post in portable.
So far the companies I have worked for, always have a temperature and humidity controlled quality lab like most of you guys are working. But in my current company, I am working with a
ROMER ABSOLUTE ARM 7525 6-AXIS ARM AND WE USE TOUCH TRIGGER PROBES (PHYSICAL CONTACT PROBES). I was so shocked when I see the arm on the shop floor in a dirty environment where people work with drills, sand papers and abrasives to do rework or to make holes and other regular stuff with hand held devices. At the time of posting this thread, the temperature on the shop floor would be 37C or 38C thanks to our ovens that bake the composite parts. I used a temperature gun pointing on my Romer arm and reading 36.1C and humid work environment. (that's insane). I have never used temperature compensation but as the temperature keeps varying to a lot depending on the duration the ovens stay open and running at 50 Celsius. I was told that the Romer absolute arm can compensate results to outside temperature, but the parts cannot compensate. I want to know from you guys that how accurate our results can be? I definitely know this is not ideal condition to even measure the parts. Our parts are made from a combination of carbon fiber, resin and fiber glass. and most of our tools are made of aluminium.
Just for information, our Romer arm holds accuracy of 0.020mm or 0.0008". Also to add in, the building don't seem to have any HVAC system on the shop floor except the CNC room and LAMINATION room. I have tried to explain the need of a controlled Quality Lab not only for CMM but for inspection also (because many parts just go to inspection area to do manual inspections and not come to CMM) but management might not thinking about it for our
NEW facility as we are moving to bigger place. So I want to explain what kind of terrible accuracy we can hold at 36C or even more.
Your help is much appreciated guys. Thanks.
