We bought a used Sheffield D28 that has a Tesastar-M probe head. We mostly use star probes, so dont really need a rotating head. And I've heard that this model head can be a problem... thinking of switching to a PH6 or at least getting a used one to have as a backup if the Tesastar conks out. But I dont know whats involved in swapping out different probe heads... Any info about this would be appreciated.
Thanks Josh, that helps clear up some basic concepts for me.
This used machine (made in 2009) doesn't look like it was used very much. It might not have been used after the 1st year since the original calibration tag was never updated. But it did sit in a dirty sheet metal shop environment for years. It has the Sheffield RCU, thus the Sheffield MP. We wanted another discovery because the D8 and a Discovery II D28 we've had for so long have been such great machines - no hardware problems at least... Anyway, it was purchased with the Tesastar per the copy of the original PO the seller provided.
Bad News is: It does make a bad clunking sound as it seats itself at A0B0.
I do like some things about rotating heads. Especially for slight angles for shank clearance as you mention. We have a PH10 on our D8, but we use multiple part fixtures with smallish parts and often have to measure right alongside the fixture where a bulky rotating head would not be able to fit. So parts can run on any cmm, we go to some pains to avoid using a rotated tip - I even had a special 45° star adapter made by Renishaw some years ago.
UKCMM thanks for the info! Is resetting the parameters a stand alone thing that's done on the tesastar-e control box? That is, it doesn't need pcdmis installed hopefully? At this point with this used cmm we have only installed MeasureMax. We'll be doing something about the pcdmis license a year or so from now.
UKCMM thanks for the info! Is resetting the parameters a stand alone thing that's done on the tesastar-e control box? That is, it doesn't need pcdmis installed hopefully? At this point with this used cmm we have only installed MeasureMax. We'll be doing something about the pcdmis license a year or so from now.
