公开(公告)号：US20190219387A1

公开(公告)日：2019-07-18

申请号：US16249127

申请日：2019-01-16

Applicant: MITUTOYO CORPORATION

Inventor： Hiroshi SAKAI

IPC: G01B11/24 ,  G06K9/68 ,  G02B26/10 ,  G06T7/55

Abstract: In a first step, numbering with a reference field of view at one area set first by an operator being defined as an original point is performed. In a second step, a place adjacent to a side around the reference field of view is numbered, then the measurement range is automatically moved to sequentially execute measurement at that position, presence of shape data is checked, measurement results is stored, and, presence of shape data at the numbered position is recorded on a memory device. In a third step, field of view with shape data found therein as a next reference field of view is employed, a place adjacent to a side around the reference field of view is numbered, then the measurement range is automatically moved to sequentially execute measurement at that position other than a position at which measurement has already been made or no shape data is found.

公开(公告)号：US20170248416A1

公开(公告)日：2017-08-31

申请号：US15430593

申请日：2017-02-13

Applicant: MITUTOYO CORPORATION

Inventor： Hiroshi SAKAI ,  Tetsuya ITO ,  Ken MOTOHASHI

IPC: G01B11/30 ,  G01B11/24

CPC classification number: G01B11/306 ,  G01B5/003 ,  G01B5/061 ,  G01B5/12 ,  G01B11/0608 ,  G01B11/12 ,  G01B11/2441 ,  G01B11/303

Abstract: A surface texture measuring apparatus includes: a measurement sensor measuring, without contact, a surface texture of an interior wall of a cylinder portion of a measurable object while displacing in a normal direction of the interior wall at each measurement region into which the interior wall is divided in a circumferential direction of the cylinder portion; a W axis displacer displacing the measurement sensor in a W axis direction; a θ axis displacer displacing the measurement sensor in the circumferential direction, after measurement of the surface texture of a first measurement region, such that the measurement sensor faces a second measurement region adjacent to the first measurement region in the circumferential direction; and a controller adjusting a W axis direction measurement position for measuring the surface texture of the second measurement region while displacing the measurement sensor in the W axis direction.

公开(公告)号：US20170248410A1

公开(公告)日：2017-08-31

申请号：US15440118

申请日：2017-02-23

Applicant: MITUTOYO CORPORATION

Inventor： Hiroshi SAKAI ,  Yutaka WATANABE ,  Yasuhiro TAKAHAMA ,  Harumasa ITO ,  Yuji KUDO

IPC: G01B11/24 ,  G01B11/30 ,  G01B11/14

CPC classification number: G01B11/2441 ,  G01B11/14 ,  G01B11/303 ,  G01B21/04 ,  G01B2210/52

Abstract: According to an embodiment of the present invention, a method of measuring a surface of an object having a curved shape by measuring a distance from a measurement head to the object, includes: setting a measuring region of the object and a threshold value of concave and convex; acquiring shape reference data including the curved shape of the object; acquiring three-dimensional data of the surface of the object by measuring the distance between the object in the measuring region and the measurement head; acquiring curve removed data by removing the shape reference data from the three-dimensional data; calculating second reference data by calculating first reference data based on the curve removed data, by removing data exceeding the threshold value with respect to the first reference data, from the curve removed data, and by averaging the curve removed data; and calculating shape data of the concave and convex.