Coordinate Measuring Machine Using Parallel Mechanism

Ab s trac t: T hi s s tu dy p rop ose s a n ew coor di n ate me as ur in g mac hi n e (C MM) b ase d on a s pat i al 3DO F p aral l el me ch ani s m. T he u se of th i s me ch ani s m wi l l p oten ti al l y i mp rove th e s ti ff ne s s, acc ur acy an d ef fi ci e nc y. T hi s p ape r d es cr i be s th e fu nd ame nt als an d an exp er i men tal CM M. T he i nf lu en ce of l i nk l ayout on th e me as ur eme nt u nc ert ai nty, mor eove r, h as b een investigated analytically and experimentally. Obtained re s ul ts s how th at th e u nc ert ai nty h as b een d ecr eas e d wh en th e me as ur in g p oin t i s i n th e ext en s ion al d ir ec ti on of th e s cal e u ni t. Con s eq ue nt ly, th e Ab be ’s p ri nc i pl e can b e ap pl i ed to p rop ose d p aral l el mechanism.