公开(公告)号：US20210033392A1

公开(公告)日：2021-02-04

申请号：US16935613

申请日：2020-07-22

Applicant: MITUTOYO CORPORATION

Inventor： Yoshiyuki OMORI

IPC: G01B21/04 ,  G01B5/20

Abstract: A method for calibrating parameters includes a measurement step that obtains measurement data by scanning a defined surface; a correction step that obtains corrected data by correcting the measurement data based on the parameters; a determination step that calculates a roundness of the corrected data and determines whether the calculated roundness is equal to or less than a predetermined value; and an adjustment step that increases or reduces at least one of the parameters when the roundness is determined to be greater than the predetermined value, and the correction step, the determination step, and the adjustment step are repeated until the roundness is determined to be equal to or less than the predetermined value.

公开(公告)号：US20190145753A1

公开(公告)日：2019-05-16

申请号：US16179227

申请日：2018-11-02

Applicant: MITUTOYO CORPORATION

Inventor： Yoshiyuki OMORI

IPC: G01B7/28 ,  G01B3/18 ,  G01B3/34

Abstract: A roundness measuring device includes an annular ring, and a plurality of displacement sensors (comparative length measuring devices) provided on the ring at predetermined intervals. The displacement sensors are arranged such that lines along which measurement axes of the displacement sensors extend intersect at a single point.

公开(公告)号：US20190049229A1

公开(公告)日：2019-02-14

申请号：US16052109

申请日：2018-08-01

Applicant: MITUTOYO CORPORATION

Inventor： Yoshiyuki OMORI

IPC: G01B5/20 ,  G01B5/008

CPC classification number: G01B5/204 ,  G01B5/008

Abstract: A threaded shaft measuring device includes a table that supports a threaded shaft to be measured, and that is capable of adjusting a rotation position about a perpendicular Z axis, adjusting a rotation position about an X axis that is horizontal and intersects with the Z axis, and adjusting a position in a Y axis direction that is horizontal and intersects with the X axis; and a stylus that performs scanning measurement of a surface of the threaded shaft. An adjustment jig capable of making contact with the threaded shaft and an elevator that brings the adjustment jig into contact with the threaded shaft are installed on the table. The adjustment jig includes an abutting bottom surface; an abutting side surface; a measurement surface; and an axis line marker that enables a tilt relative to the X axis to be detected.

公开(公告)号：US20190212121A1

公开(公告)日：2019-07-11

申请号：US16243539

申请日：2019-01-09

Applicant: MITUTOYO CORPORATION

Inventor： Yoshiyuki OMORI

IPC: G01B5/008 ,  G01B5/20

CPC classification number: G01B5/008 ,  G01B5/20 ,  G01M11/08

Abstract: A lens-measuring machine includes: a table rotatable around a rotation axis; a lens holder that holds a workpiece in a form of a lens, the lens holder being placed on the table so that an optical axis of the lens becomes orthogonal to the rotation axis; a contact tip that contacts a measurement surface of the lens; an angle sensor for detecting a rotary angle of the table; a displacement detector for detecting a displacement of the contact tip; and a controller for calculating coordinates information of the measurement surface of the lens in a form of polar coordinates, whose origin is at the rotation axis, based on displacement of the contact tip for every predetermined rotary angle of the table, the controller converting the calculated polar coordinates into Cartesian coordinates.

公开(公告)号：US20180073852A1

公开(公告)日：2018-03-15

申请号：US15689370

申请日：2017-08-29

Applicant: MITUTOYO CORPORATION

Inventor： Tatsuki NAKAYAMA ,  Yoshiyuki OMORI

IPC: G01B5/20

CPC classification number: G01B5/201 ,  G01B7/282 ,  G01B21/20

Abstract: A roundness measuring machine includes: a base; a table rotatable relative to the base; a probe configured to scan a surface of a workpiece mounted on the table; a motor configured to rotate the table; and a control device configured to control a rotation of the motor. The control device includes: a starting current detector configured to detect a starting current of the motor; and an acceleration/deceleration time setting unit configured to detect at least one of acceleration time and deceleration time for the motor in accordance with the starting current. The roundness measuring machine can suitably set the acceleration time and the deceleration time for the motor corresponding to the inertia moment of the workpiece mounted on the table.