I've been getting errors up to .002" when calibrating a Mistral CMM. Had a B&S engineer in for the last three days trying to find the fault. He replaced the drive belts. Drive belt bearings were greased. Bearing lifts were checked. All the reader heads were removed, cleaned & replaced. Scales were cleaned. Z axis counterbalance was reset. All motors were retuned and tested.
It gave good calibration results for two days so yesterday he left. This morning the gremlins were back. It seems to happen more so in the morning when the machine is cold and if you run the calibration program a couple of times in a row the reults come good and usually stay good for the day and the next morning back to errors. I'm going to rewrite the Qualifying program to see if that helps. Anybody experience this before??
It gave good calibration results for two days so yesterday he left. This morning the gremlins were back. It seems to happen more so in the morning when the machine is cold and if you run the calibration program a couple of times in a row the reults come good and usually stay good for the day and the next morning back to errors. I'm going to rewrite the Qualifying program to see if that helps. Anybody experience this before??
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