Patent ID: 6074291
Filing Date: 2000-06-13
Classification: B24B

Abstract:
An apparatus for preparing an ultra-thin specimen with a polishing wheel, comprising:a base;a holding unit mounted on said base and having a movable part for supporting said specimen; andan adjusting assembly attached to said base for adjusting an orientation of said specimen relative to a top surface of said polishing wheel by providing a fine movement during polishing,wherein said adjusting assembly includes a screw bolt having a cylindrical bolt head circumferentially arranged with a plurality of fine grooves on a cylindrical surface of said bolt head and a threaded rod with fine pitch for providing said fine movement during polishing said specimen and a matching piece for engaging with one of said plurality of fine grooves to fix a position of said screw bolt; andsaid movable part of said holding unit is moved away from said adjusting assembly to enlarge a latitudinal cross-section of said apparatus so as to increase the precision of said orientation.