公开(公告)号：US20190078866A1

公开(公告)日：2019-03-14

申请号：US16123970

申请日：2018-09-06

Applicant: Mitutoyo Corporation

Inventor： Takashi Noda

IPC: G01B5/008

Abstract: There is provide a method for controlling a shape measuring apparatus that synchronize an acceleration/deceleration changing timing of a velocity pattern with a control sampling cycle, and prevents a control lag.Based on a shape of a movement path set based on preliminarily-obtained shape data of an object to be measured, a velocity pattern for a probe to move along the movement path.It is determined whether a velocity changing timing of the velocity pattern is synchronized with a control sampling cycle of a shape measuring apparatus.When the velocity changing timing of the velocity pattern is not synchronized with the control sampling cycle, the velocity pattern is corrected such that the velocity changing timing of the velocity pattern is synchronized with the control sampling cycle of the shape measuring apparatus.

公开(公告)号：US20170090455A1

公开(公告)日：2017-03-30

申请号：US15271824

申请日：2016-09-21

Applicant: Mitutoyo Corporation

Inventor： Takashi Noda ,  Hiromi Deguchi ,  Norihiko Murata

IPC: G05B19/401 ,  G06F17/16 ,  G01B7/008

CPC classification number: G05B19/401 ,  G01B5/008 ,  G01B7/008 ,  G05B2219/23385 ,  G06F17/16

Abstract: There is provided a method for controlling a shape measuring apparatus which can achieve both trajectory correcting capability and control stability. A stylus tip is moved along a scanning path while controlling the stylus tip so as to keep an amount of deflection of a probe to a workpiece to be a reference amount of deflection. A movement instruction for the probe is generated according to a combined velocity vector V represented by the following expression: combined velocity vector V=Gf·Vf+Ge·Ve+Gc·Vc2, where Vf is a path velocity vector to move the probe along the scanning path, Ve is a deflection correcting vector to keep the amount of deflection of the probe to the workpiece to be the reference amount of deflection, Vc2 is a second trajectory correcting vector represented by (Vc1·q)q, Vc1 is a first trajectory correcting vector to correct a position of the probe so that the stylus tip heads to the scanning path, and q is a trajectory correcting direction vector given by a vector product of a normal line of a surface of the workpiece and the path velocity vector Vf.

公开(公告)号：US09341459B2

公开(公告)日：2016-05-17

申请号：US14464184

申请日：2014-08-20

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda ,  Hiroshi Kamitani ,  Kazumi Mizukami

IPC: G01B5/008 ,  G01B5/20 ,  G01B21/04

CPC classification number: G01B5/008 ,  G01B5/204 ,  G01B21/047

Abstract: Controller executes a first scanning control, causing a driver to move a probe such that a tip scans along an inclined surface of a V groove to approach a center of the V groove, and a second scanning control, causing the driver to move the probe such that the tip scans along the inclined surface of the V groove to approach the center of the V groove from a side opposite that of the first scanning control. Angle calculator calculates an angle created between a direction of a deflection vector of the probe and a predetermined direction. Threshold value-correspondent coordinate obtainer obtains coordinates of the tip where the angle has changed to exceed a first threshold value during execution of the first scanning control and obtains coordinates of the tip where the angle has changed to exceed a second threshold value during execution of the second scanning control.

Abstract translation: 控制器执行第一扫描控制，使得驾驶员移动探头，使得尖端沿着V槽的倾斜表面扫描以接近V槽的中心;以及第二扫描控制，使得驾驶员将探针移动到 尖端沿着V槽的倾斜表面扫描以从与第一扫描控制的相反侧接近V槽的中心。 角度计算器计算在探针的偏转矢量的方向和预定方向之间产生的角度。 阈值对应坐标获取器在执行第一扫描控制期间获得角度已经改变的尖端的坐标超过第一阈值，并且在执行第一扫描控制期间获得角度已经改变的尖端的坐标超过第二阈值 第二扫描控制。

公开(公告)号：US10859365B2

公开(公告)日：2020-12-08

申请号：US16123867

申请日：2018-09-06

Applicant: Mitutoyo Corporation

Inventor： Takashi Noda

IPC: G01B5/008 ,  G05B19/401

Abstract: There is provide a method for controlling a shape measuring apparatus that synchronize an acceleration/deceleration changing timing of a velocity pattern with a control sampling cycle, and prevents a control lag.Based on a shape of a movement path set based on preliminarily-obtained shape data of an object to be measured, a velocity pattern for a probe to move along the movement path.It is determined whether a velocity changing timing of the velocity pattern is synchronized with a control sampling cycle of a shape measuring apparatus.When the velocity changing timing of the velocity pattern is not synchronized with the control sampling cycle, the velocity pattern is corrected such that the velocity changing timing of the velocity pattern is synchronized with the control sampling cycle of the shape measuring apparatus.

公开(公告)号：US10697748B2

公开(公告)日：2020-06-30

申请号：US15873178

申请日：2018-01-17

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda

IPC: G01B5/008 ,  G01B5/016 ,  G01B5/012 ,  G01B5/20 ,  G01B21/04

Abstract: A shape measuring apparatus includes a probe head that changes its posture by rotational motion of a first drive axis and a second drive axis, and a coordinate measuring machine that three-dimensionally displaces a location of the probe head by three translation axes (a third drive axis, a fourth drive axis, and a fifth drive axis). The location of a measurement tip is given by coordinate values of the third to fifth drive axes, and the posture of a probe head is given by a first rotating angle α and a second rotating angle β. An intersection point between a first rotation axis and a second rotation axis is set as a rotation center Q. An interpolation point in each control period is calculated for each of the first to fifth drive axes.

公开(公告)号：US09915516B2

公开(公告)日：2018-03-13

申请号：US15141145

申请日：2016-04-28

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda

IPC: G01B5/008 ,  G05B19/401

CPC classification number: G01B5/008 ,  G05B19/401 ,  G05B2219/35066 ,  G05B2219/37193 ,  G05B2219/37205 ,  G05B2219/37206 ,  G05B2219/37443 ,  G05B2219/37449 ,  G05B2219/50063 ,  Y02P90/265

Abstract: There is provided a method for controlling a shape measuring apparatus which continues to perform nominal scanning measurement to a workpiece having a slightly large deviation from a design data. A scanning path to move a stylus tip is calculated based on design data of a workpiece. The stylus tip is moved along the scanning path. It is monitored whether a distance between the scanning path and an actual workpiece is excessive. When the distance between the scanning path and the actual workpiece is excessive, a trajectory difference error is generated. When the trajectory difference error is generated, geometric correction is performed to the design data so that the design data approaches to the actual workpiece. Scanning measurement is performed based on the design data after the geometric correction.

公开(公告)号：US10365630B2

公开(公告)日：2019-07-30

申请号：US15638932

申请日：2017-06-30

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda ,  Hiromi Deguchi ,  Norihiko Murata

IPC: G01B21/04 ,  G01B21/20 ,  G01B5/008 ,  G05B19/04 ,  G05B19/401

Abstract: A probe displacement command in a scanning measurement is generated according to a composite speed vector V: V=Gf·Vf+Ge·Ve+sp(p)·Gc·Vc2 wherein Vf is a vector along which a probe is displaced along a scanning path, Ve is a vector maintaining a deflection amount of the probe toward a work piece at a standard deflection amount. Vc2 is represented by (Vc1·q)q, Vc1 is a vector in a direction correcting a probe position such that a stylus tip is oriented along a scanning course, q is a vector given by a vector product of the normal line of a surface of the work piece and Vf, The normal direction of a measured surface is designated as Nw, p is a scalar product of Vc2 and Nw, and sg(p) is a function returning +1 or −1 in accordance with a value of p.

公开(公告)号：US10274297B2

公开(公告)日：2019-04-30

申请号：US15158800

申请日：2016-05-19

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda ,  Hiromi Deguchi ,  Naoya Kikuchi

IPC: G06F3/0484 ,  G01B3/00 ,  G01B5/20 ,  G06F3/0481 ,  G01B5/008

Abstract: A method for nominal scanning measurement includes allowing a user to select a shape of an object to be measured from a geometric shape menu prepared in advance, allowing the user to input, according to the selected geometric shape, a parameter to specify the geometric shape, allowing the user to select a measurement path from a measurement path menu prepared in advance, allowing the user to input, according to the selected measurement path, a parameter to specify the measurement path, calculating, based on the selected geometric shape, the input parameter of the geometric shape, the selected measurement path, and the input parameter of the measurement path, measurement points on a workpiece and a normal line direction at each of measurement points using a calculation formula prepared in advance, and calculating a path for scanning measurement to move while scanning a sequence of the measurement points.

公开(公告)号：US20190078867A1

公开(公告)日：2019-03-14

申请号：US16123552

申请日：2018-09-06

Applicant: Mitutoyo Corporation

Inventor： Takashi Noda

IPC: G01B5/012 ,  G01B5/20

Abstract: There is provide a method for controlling a shape measuring apparatus that synchronize an acceleration/deceleration changing timing of a velocity pattern with a control sampling cycle, and prevents a control lag.Based on a shape of a movement path set based on preliminarily-obtained shape data of an object to be measured, a velocity pattern for a probe to move along the movement path.It is determined whether a velocity changing timing of the velocity pattern is synchronized with a control sampling cycle of a shape measuring apparatus.When the velocity changing timing of the velocity pattern is not synchronized with the control sampling cycle, the velocity pattern is corrected such that the velocity changing timing of the velocity pattern is synchronized with the control sampling cycle of the shape measuring apparatus.

公开(公告)号：US09298178B2

公开(公告)日：2016-03-29

申请号：US13893864

申请日：2013-05-14

Applicant: MITUTOYO CORPORATION

Inventor： Takashi Noda ,  Hiromi Deguchi

IPC: G05B19/18 ,  G05B19/04 ,  G01B21/04 ,  G05B19/401

CPC classification number: G05B19/041 ,  G01B21/04 ,  G05B19/401 ,  G05B2219/37043 ,  G05B2219/37374 ,  G05B2219/37411 ,  Y02P90/265

Abstract: A shape measuring apparatus includes: a probe having a stylus tip; a movable mechanism configured to move the stylus tip; an information acquiring unit configured to acquire design information of a workpiece; a path setting unit configured to set a path of the stylus tip; a path component calculating section configured to calculate a path velocity vector; a push direction component calculating section configured to detect a deflection, and calculate a push correction vector; a locus correction component calculating section configured to detect an amount and a direction of locus deviation of the probe from the path, and calculate a locus correction vector; a velocity synthesizing section configured to calculate a velocity synthesis vector by combining the path velocity vector, the push correction vector, and the locus correction vector; and a drive control unit configured to move the probe according to the velocity synthesis vector.

Abstract translation: 一种形状测量装置，包括：具有触针尖的探针; 移动机构，其构造成移动所述触针尖; 信息获取单元，被配置为获取工件的设计信息; 路径设置单元，被配置为设置触控笔尖的路径; 路径分量计算部，被配置为计算路径速度矢量; 推动方向分量计算部，被配置为检测偏转，并计算推压校正矢量; 轨迹校正分量计算部，被配置为从所述路径检测所述探测器的轨迹偏离的量和方向，并计算轨迹校正矢量; 速度合成部，被配置为通过组合路径速度矢量，推压校正矢量和轨迹校正矢量来计算速度合成矢量; 以及驱动控制单元，被配置为根据速度合成向量移动探针。