WO2017159195A1 - 円形部材の内周長測定方法 - Google Patents
円形部材の内周長測定方法 Download PDFInfo
- Publication number
- WO2017159195A1 WO2017159195A1 PCT/JP2017/005617 JP2017005617W WO2017159195A1 WO 2017159195 A1 WO2017159195 A1 WO 2017159195A1 JP 2017005617 W JP2017005617 W JP 2017005617W WO 2017159195 A1 WO2017159195 A1 WO 2017159195A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circular member
- mounting table
- inner peripheral
- dimensional sensor
- state
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/06—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/025—Measuring of circumference; Measuring length of ring-shaped articles
Definitions
- the present invention relates to a method for measuring the inner peripheral length of a circular member, and more particularly, to a method for measuring the inner peripheral length of a circular member that can accurately measure the inner peripheral length without applying an unnecessary load to the circular member.
- Patent Documents 1 and 2 Conventionally, various measuring devices for measuring the inner circumference of an annular bead member have been proposed (for example, see Patent Documents 1 and 2).
- a columnar measuring table composed of two semi-columnar divided bodies is arranged inside a bead member.
- the divided members are moved in the direction of separating each other so that the outer peripheral surfaces of the divided members are in close contact with the inner peripheral surface of the bead member.
- the inner circumferential length of the bead member is measured based on the separation distance between the divided bodies and the circumferential length of the outer circumferential surface of the divided body.
- the bead member is deformed because a force for expanding the diameter is applied. Therefore, it is disadvantageous for improving the measurement accuracy of the inner circumference.
- a roller is pressed directly into contact with the inner peripheral surface of the bead member. And this roller is rolled on the inner peripheral surface of a bead member, and is rotated 1 time in the circumferential direction.
- the inner peripheral length of the bead member is measured based on the number of rotations of the roller at this time. Since the inner peripheral surface of the bead member is directly pressed by the roller, deformation occurs. Therefore, it is disadvantageous for improving the measurement accuracy of the inner circumference.
- An object of the present invention is to provide a method for measuring the inner peripheral length of a circular member that can accurately measure the inner peripheral length without applying an unnecessary load to the circular member.
- the method for measuring the inner circumference of a circular member includes a two-dimensional sensor disposed at a predetermined measurement position inside a circular member that is placed flat on a mounting table in an unconstrained state.
- the sensor is opposed to the inner peripheral surface of the circular member in a non-contact state and rotated around a predetermined position inside the circular member, thereby separating the two-dimensional sensor from the inner peripheral surface.
- the distance is measured over the entire circumference of the circular member, and the inner circumferential length of the circular member is calculated by the calculation unit based on the measured separation distance and the distance between the predetermined position in plan view and the two-dimensional sensor. Is calculated.
- the inner circumferential length of a circular member that is placed flat on the pedestal in an unconstrained state is measured, and a two-dimensional sensor that does not contact the circular member is used for the measurement. Therefore, unnecessary load is not applied to the circular member, and forced deformation does not occur. Therefore, it is advantageous to accurately measure the inner peripheral length of the circular member.
- FIG. 1 is an explanatory diagram illustrating an inner circumference measuring apparatus for carrying out the present invention in a plan view.
- FIG. 2 is an explanatory view illustrating the measurement apparatus of FIG. 1 in a side view.
- FIG. 3 is an explanatory view illustrating a state in which the mounting table of the measuring apparatus of FIG. 2 is raised in a side view.
- FIG. 4 is an explanatory diagram illustrating, in plan view, the process of measuring the separation distance to the inner peripheral surface of the circular member by the two-dimensional sensor.
- FIG. 5 is an explanatory view illustrating the step of FIG. 4 in a side view.
- FIG. 6 is an explanatory diagram illustrating an inner circumference length calculation method.
- the method for measuring the inner peripheral length of the circular member of the present invention is carried out using the inner peripheral length measuring device 1 for circular members exemplified in FIGS.
- the subject of measuring the inner peripheral length according to the present invention is various circular members 12 (cylindrical members and annular members) such as bead members and cylindrical rubber members used in rubber products such as tires.
- the circular member 12 is indicated by a two-dot chain line.
- one circular member 12 is set in the measuring device 1.
- the measuring apparatus 1 includes a mounting table 4 on which a circular member 12 to be measured is mounted, a two-dimensional sensor 8 that is movably installed with respect to the mounting table 4, and a rotation drive mechanism 10a that rotates the two-dimensional sensor 8. And a calculation unit 11 to which measurement data from the two-dimensional sensor 8 is input. Various computers or the like can be used as the calculation unit 11.
- the circular member 12 is placed flat on the table 4 in a horizontal state without being restrained.
- the unconstrained state is a state in which an external force other than the external force due to gravity (self-weight) is not acting on the circular member 12.
- the mounting table 4 is formed of a plurality of divided bodies 5 divided in the circumferential direction. Each divided body 5 has a convex support 6 projecting upward on its upper surface.
- the circular member 12 is laid flat on the convex support 6 in an unconstrained state.
- the rod-like convex support portion 6 extends in the radial direction of the circular member 12.
- the mounting table 4 may not be formed by the plurality of divided bodies 5 but may be formed by one plate-like body that is not divided.
- the number of the convex support portions 6 is at least 3, for example, an appropriate number of 3 or more and 12 or less.
- the stand 4 is attached to the frame 2.
- the frame 2 includes a base frame 2a and a movable frame 2b.
- One end of the movable frame 2b is rotatably connected to the base frame 2a.
- the movable frame 2 b can be raised and lowered with respect to the base frame 2 a by the raising and lowering mechanism 3.
- the movable frame 2b rises and falls in a predetermined angle range from a horizontal state to a vertical state.
- the mounting table 4 can be raised and lowered from the horizontal state.
- the undulation mechanism 3 a hydraulic cylinder or the like can be used.
- the surface of the mounting table 4 is provided with a plurality of projecting portions 7 that project from the surface at intervals. Each projecting portion 7 is moved by a retracting mechanism 7 a so that it can appear and retract with respect to the surface of the mounting table 4.
- An air cylinder, a hydraulic cylinder, or the like can be used as the retracting mechanism 7a.
- the two protrusions 7 are used as a set, and the interval and position in plan view of the protrusions 7 to be set are set based on the inner diameter of the circular member 12 to be measured.
- the two-dimensional sensor 8 is arranged at the center of the table 4 in plan view, and is arranged inside the circular member 12 that is laid flat on the table 4.
- the two-dimensional sensor 8 is movable in the radial direction of the circular member 12 by the horizontal movement mechanism 10b. Thereby, the two-dimensional sensor 8 arranged facing the inner peripheral surface 12a of the circular member 12 placed flat can move in a direction approaching and separating from the inner peripheral surface 12a.
- the two-dimensional sensor 8 and the horizontal movement mechanism 10b are supported by a rotating shaft 9 that is disposed at a predetermined position (for example, the center of the mounting table 4) of the mounting table 4 and extends vertically in plan view.
- the rotary shaft 9 is driven to rotate about its axis by the rotary drive mechanism 10a.
- the two-dimensional sensor 8 is driven to rotate about the rotation shaft 9.
- a laser sensor can be used as the two-dimensional sensor 8.
- the two-dimensional sensor 8 reflects the irradiated laser light on the inner peripheral surface 12a, and receives the reflected laser light, so that the separation distance d from the two-dimensional sensor 8 to the inner peripheral surface 12a is not contacted with the circular member 12. taking measurement.
- the two-dimensional sensor 8 does not irradiate the laser beam to only one point on the inner peripheral surface 12a, but irradiates a range of a certain length at a time to the two-dimensional sensor 8 and the inner peripheral surface 12a in the irradiated range.
- the separation distance d is measured.
- the separation distance d measured by the two-dimensional sensor 8 is input to the calculation unit 11.
- the distance w between the position of the rotary shaft 9 (axial center) in plan view and the two-dimensional sensor 8 is also input to the calculation unit 11.
- the mounting table 4 In order to place the circular member 12 flat on the mounting table 4, first, as illustrated in FIG. 3, the mounting table 4 is raised at a predetermined angle. Then, the two projecting portions 7 selected based on the inner diameter of the circular member 12 are made to project from the surface of the mounting table 4.
- the inclination angle of the stand 4 in a standing state with respect to the horizontal is, for example, not less than 45 ° and not more than 75 °.
- the circular member 12 is transferred to the mounting table 4 by engaging the inner peripheral surface 12 a of the circular member 12 with the two protruding portions 7 protruding from the surface of the mounting table 4. As a result, the circular member 12 is in a state in which the inner peripheral surface 12 a is supported by the two projecting portions 7 and the lower surface 12 b is supported by the convex support portion 6. In the case of the large circular member 12, it is transferred using a crane or the like.
- the table 4 is lowered by the hoisting mechanism 3 to make it horizontal. Thereafter, the protruding portion 7 is immersed under the surface of the mounting table 4. Thereby, the circular member 12 is placed flat on the mounting table 4 in an unconstrained state.
- the inner diameter of the circular member 12 for measuring the inner peripheral length L is not particularly limited, for example, the present invention can be applied even if the inner diameter is in the range of 500 mm to 2000 mm.
- the circular member 12 can be positioned with respect to the mounting table 4 by engaging the inner peripheral surface of the circular member 12 with the two protruding portions 7 in the mounting table 4 in the standing state.
- the position of the protrusion 7 in the mounting table 4 in plan view is set at a position where the circular member 12 can be positioned at a desired position when placed flat.
- the position of the protrusion 7 in the mounting table 4 in plan view is set so that the position of the circle center of the circular member 12 when placed flat is within a range of 20 mm or less from the position of the rotary shaft 9.
- the standing table 4 is difficult to stably hold the circular member 12. Ensure a reasonable spacing.
- the position of the projecting portion 7 for positioning the circular member 12 at a desired position when flat is different. Therefore, for example, for each size of the inner diameter of the circular member 12, an appropriate plan view position and interval of the two protruding parts 7 to be used may be set, and the protruding part 7 may be installed at the appropriate position.
- the center is set to be approximately the position of the rotation shaft 9. Since various circular members 12 having different inner diameter sizes can be accurately positioned at a desired position with respect to the mounting table 4 and placed flat, it has high versatility.
- the two-dimensional sensor 8 facing the inner peripheral surface 12a of the circular member 12 is moved by the horizontal movement mechanism 10b toward the inner peripheral surface 12a as necessary and stopped at a predetermined measurement position. That is, the two-dimensional sensor 8 is moved so that the inner peripheral surface 12a falls within the measurable range of the two-dimensional sensor 8. Therefore, if the inner peripheral surface 12a of the circular member 12 placed flat on the mounting table 4 in an unconstrained state is within the measurable range of the two-dimensional sensor 8 at the initial position, the two-dimensional sensor 8 is moved horizontally. There is no need to move the mechanism 10b. By adopting the horizontal movement mechanism 10b, the two-dimensional sensor 8 can be easily set in a measurable range with respect to various circular members 12 having different inner diameter sizes.
- the two-dimensional sensor 8 positioned at a predetermined measurement position is rotated about the rotation axis 9, and the two-dimensional sensor 8 is rotated about the rotation axis 9. Meanwhile, the separation distance d from the two-dimensional sensor 8 to the inner peripheral surface 12a is measured, and the separation distance d is measured in the range of the entire circumference of the circular member 12.
- the measured separation distance d is input to the calculation unit 11. Since the distance w between the rotary shaft 9 in plan view and the two-dimensional sensor 8 at a predetermined measurement position can be grasped, this distance w is also input to the calculation unit 11. Therefore, the distance (w + d) from the axial center of the rotating shaft 9 in plan view to the inner peripheral surface 12a can be grasped in the range of the entire circumference of the circular member 12.
- the angle at which the two-dimensional sensor 8 rotates about the rotation axis 9 from the measurement of the separation distance d at a certain position to the measurement of the separation distance d at the next position is a minute angle A (rad).
- the minute angle A is about 2 ⁇ / 15000 (rad).
- the two-dimensional sensor 8 irradiates a laser beam to a predetermined length range in the vertical direction at a time, and measures the separation distance d between the two-dimensional sensor 8 and the inner peripheral surface 12a of the irradiated range. Therefore, as the separation distance d for calculating the inner circumferential length L, for example, any vertical direction such as a separation distance d at the center position in the vertical direction of the inner peripheral surface 12a or a separation distance d at a predetermined vertical position. A separation distance d at the position can be employed.
- the inner peripheral length L of the circular member 12 placed flat on the pedestal 4 in an unconstrained state is measured using the two-dimensional sensor 8 that is not in contact with the circular member 12. Therefore, an unnecessary load is not applied to the circular member 12, and forced deformation does not occur. Therefore, it is advantageous to accurately measure the inner circumferential length L of the circular member 12.
- the surface of the adjacent portion of the pedestal 4 adjacent to the circular member 12 laid flat on the pedestal 4 in an unconstrained state is a low reflection surface 6a that diffusely reflects the laser light emitted by the two-dimensional sensor 8.
- the upper surface and the inner peripheral side end surface of the convex support portion 6 are low reflection surfaces 6a that have been subjected to blasting or the like that makes the surface minute unevenness.
- the protrusion 7 When the separation distance d is measured by the two-dimensional sensor 8, the protrusion 7 is immersed below the surface of the mounting table 4. For this reason, the projecting portion 7 does not block the laser light emitted by the two-dimensional sensor 8 from getting in the way.
- the circular member 12 is supported by the convex support portion 6 protruding upward, it becomes easy to align the measurement center of the two-dimensional sensor 8 and the vertical center of the inner peripheral surface 12a of the circular member 12. Yes. And in the part which is not supported by the convex support part 6 of the circular member 12, since the internal peripheral surface 12a will be in the state which floated in the air, the adjacent part of the mounting base 4 adjacent to the internal peripheral surface 12a will become the minimum. . Accordingly, it is advantageous to reduce measurement noise when measuring the separation distance d by the two-dimensional sensor 8.
- the gantry 4 can be a horizontal gantry 4 without adopting a undulating configuration.
- the mounting table 4 is installed on the upper surface (framework) fixed to the frame 2 horizontally.
- the circular member 12 in a lying state is placed on the mounting table 4.
- the circular member 12 is hung in a state of being laid down by a crane or the like and transferred to the table 4.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
2 フレーム
2a ベースフレーム
2b 可動フレーム
3 起伏機構
4 置台
5 分割体
6 凸状支持部
6a 低反射面
7 突出部
7a 出没機構
8 二次元センサ
9 回転軸
10a 回転駆動機構
10b 水平移動機構
11 演算部
12 円形部材
12a 内周面
12b 下面
Claims (5)
- 置台に無拘束の状態で平置きした円形部材の内側の所定の測定位置に二次元センサを配置して、この二次元センサを前記円形部材の内周面に対して非接触の状態で対向させて、前記円形部材の内側の所定位置を中心にして回転させることにより、前記二次元センサから前記内周面までの離間距離を前記円形部材の全周の範囲で測定し、測定した前記離間距離と、平面視の前記所定位置と前記二次元センサとの距離と、に基づいて演算部により前記円形部材の内周長を算出することを特徴とする円形部材の内周長測定方法。
- 前記置台が水平状態から起立した状態に起伏可能に構成され、前記置台の表面に間隔をあけてこの表面から突出する複数の突出部を設けておき、前記置台を起立した状態で、2つの前記突出部に前記円形部材の内周面を係合させて前記置台に載せた後、前記置台を水平状態にすることにより、前記円形部材を前記置台に無拘束の状態で平置きする請求項1に記載の円形部材の内周長測定方法。
- 前記突出部を前記置台の表面に対して出没可能に設けておき、前記円形部材を前記置台に平置きした後、前記突出部を前記置台の表面よりも下に没入させた状態にする請求項2に記載の円形部材の内周長測定方法。
- 前記置台が上面に上方に突出する凸状支持部を有し、この凸状支持部の上に前記円形部材を無拘束の状態で平置きする請求項1~3のいずれかに記載の円形部材の内周長測定方法。
- 前記二次元センサがレーザセンサであり、無拘束の状態で前記置台に平置きした前記円形部材に隣接する前記置台の隣接部分の表面を、前記レーザセンサが照射するレーザに対して乱反射する低反射面にしておく請求項1~4のいずれかに記載の円形部材の内周長測定方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780010770.6A CN108603755B (zh) | 2016-03-16 | 2017-02-16 | 圆形构件的内周长测定方法 |
KR1020187021219A KR102067779B1 (ko) | 2016-03-16 | 2017-02-16 | 원형 부재의 내주 길이 측정 방법 |
US16/085,557 US10775152B2 (en) | 2016-03-16 | 2017-02-16 | Inner circumferential length measurement method for circular member |
EP17766202.0A EP3431924B1 (en) | 2016-03-16 | 2017-02-16 | Internal circumference measurement method for circular member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016052625A JP6233434B2 (ja) | 2016-03-16 | 2016-03-16 | 円形部材の内周長測定方法 |
JP2016-052625 | 2016-03-16 |
Publications (1)
Publication Number | Publication Date |
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WO2017159195A1 true WO2017159195A1 (ja) | 2017-09-21 |
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Family Applications (1)
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PCT/JP2017/005617 WO2017159195A1 (ja) | 2016-03-16 | 2017-02-16 | 円形部材の内周長測定方法 |
Country Status (6)
Country | Link |
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US (1) | US10775152B2 (ja) |
EP (1) | EP3431924B1 (ja) |
JP (1) | JP6233434B2 (ja) |
KR (1) | KR102067779B1 (ja) |
CN (1) | CN108603755B (ja) |
WO (1) | WO2017159195A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6206527B2 (ja) * | 2016-03-16 | 2017-10-04 | 横浜ゴム株式会社 | 円形部材の内周長測定装置 |
JP6146505B1 (ja) * | 2016-03-16 | 2017-06-14 | 横浜ゴム株式会社 | 円形部材の内周長測定装置 |
CN113927369B (zh) * | 2021-09-14 | 2022-09-20 | 华中科技大学 | 一种机床主轴回转误差运动综合在机测量装置及方法 |
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KR20180097706A (ko) | 2018-08-31 |
JP2017166984A (ja) | 2017-09-21 |
EP3431924A1 (en) | 2019-01-23 |
US10775152B2 (en) | 2020-09-15 |
US20190154431A1 (en) | 2019-05-23 |
CN108603755A (zh) | 2018-09-28 |
CN108603755B (zh) | 2021-01-15 |
KR102067779B1 (ko) | 2020-01-17 |
EP3431924B1 (en) | 2024-09-04 |
EP3431924A4 (en) | 2019-10-09 |
JP6233434B2 (ja) | 2017-11-22 |
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