Mitutoyo Corporation

Ryosuke Watanabe

Hisayoshi Sakai

Yoshiyuki Omori

Hideki Shindo

Junsuke Yasuno

Atsushi Tsuruta

Syuuzou Ueno

A rotary disk rotatable around a vertical rotation axis; a bearing supporting the rotary disk so as to be freely rotatable; a slide disk slidable on a top surface of the rotary disk; a position adjustment bracket that displaces the slide disk along the top surface of the rotary disk; a placement disk that is supported by the slide disk; a plurality of air nozzles that are arranged on a top surface of the stator in an annular shape centered on the rotation axis, and form a static pressure air film between the top surface of the stator and a bottom surface of the rotary disk; an aerostatic pocket formed between the top surface of the rotary disk and a bottom surface of the slide disk; and a communication aperture is formed on the rotary disk and introduces pressure of the static pressure air film into the aerostatic pocket.

Rotary table and roundness measuring apparatus

An eccentricity adjusting motor ( ) is provided in eccentricity adjusting device ( ) that adjusts an eccentricity in a work. A tilt adjusting motor ( ) is also provided in tilt adjusting device ( ) that adjusts a tilt of the work. A processor ( ) computes the eccentricity and tilt of the work, based on which eccentricity/tilt compensating means ( ) control the motors ( ) to compensate the eccentricity and tilt of the work.

Method and apparatus for measuring roundness

Growing community of inventors

Hiroshima, Japan

Ryosuke Watanabe