Skip to main content

Posts

Showing posts from 2018

What is the truth of the mosaic of the twins Romulus and Remus?

The mosaic represents  the twins Romulus and Remus , identified by their names, being suckled by the she-wolf. The Mosaic was found in Apamea in Syria, dated 511 AD . Apameia was a colony founded by Alexander's general Seleucos Nicator. Now the mosaic is in the Caravanserai Museum, Syria. Our books say that Romulus and Remus found Rome. Their story is recorded also by many "ancient" authors who claim their birth and adventures were fated in order for Rome to be founded. There is something very strange in this mosaic.  Our books say it is a Roman mosaic.  If he/she was a Roman, the question is why he/she did not write it in Latin but used an alphabet that we call it today ancient Greek alphabet?  If he/she was a Greek, why would he/she lay a Roman theme mosaic? What is written there?  What language is it?  What are these people that are Roman but write in ancient Greek? There are written these words; "piho" , "gsis" , "dve", " gon...

CMM Fixturing Measurement Techniques

Does CMM correct a bad fixturing of a workpiece? Does CMM correct the impact that a bad fixturing has  on GD&T's, lengths, diameters and angles ? I think, the part fixturing and part alignment into the fixture is the main factor in CMM incorrect measurements. If we define the part fixturing and alignment incorrectly as a concept the CMM will be used incorrectly.  If the CMM result of a trueposition of a feature to datum -A- is out of the tolerance can the CMM correct the true position if it the datum A is measured as a cylinder and the part is 3 degrees skewed from being parallel to the CMM axis. I never have assumed that the CMM corrects the errors of fixturing, and the part can be measured without a precise fixturing/alignment. First question I will ask is what’s our benefit if the CMM does that? We do not need a precise fixturing-alignment of the part into a fixture and consequently we save some time/cost on this. Practically, how it is going to work when w...