WO2005064267A1 - Rキャリパー - Google Patents
Rキャリパー Download PDFInfo
- Publication number
- WO2005064267A1 WO2005064267A1 PCT/JP2004/019044 JP2004019044W WO2005064267A1 WO 2005064267 A1 WO2005064267 A1 WO 2005064267A1 JP 2004019044 W JP2004019044 W JP 2004019044W WO 2005064267 A1 WO2005064267 A1 WO 2005064267A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curvature
- radius
- piece
- movable
- movable piece
- Prior art date
Links
Classifications
-
- 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
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
Definitions
- the present invention relates to a measuring device for measuring a radius of curvature of an arc-shaped portion of a device under test.
- the radius of curvature of the arc-shaped portion of the workpiece is determined. May be measured.
- a radius gauge is generally used as a radius of curvature measuring device (hereinafter referred to as an R caliper).
- a radius gauge is formed by bundling a plurality of gauge pieces each made of a small piece of metal sheet having a corner and a concave part which has been rounded with a predetermined radius of curvature, and is covered from among gauges of various sizes. Select the gauge piece that matches the curvature of the arc-shaped part of the workpiece by the unit of measure, determine whether or not the force matches the arc by contacting the part to be measured, and use the radius of curvature of the matched gauge piece as the measured value. Things.
- Radius gauges are small and lightweight and have excellent portability, but the selection of matching gauge pieces is troublesome and the workability is poor. Also, for example, a radius gauge having a curvature difference of 0.5 mm and a bundle of 10 gauge pieces can measure only a maximum curvature radius difference of 5 mm. Therefore, in order to measure arc-shaped parts with various radii of curvature, a large number of radius gauges had to be prepared.
- Patent Document 1 Japanese Patent Application Laid-Open No. 7-2341011 discloses a radius-of-curvature measuring device for inspecting the wear amount of a blade of a refiner used for pulp production. This curvature radius measuring device is configured such that a member to be measured is brought into contact with a contact member having two sides expanded at a certain angle, and the central force of the contact member is pushed until the probe that extends is brought into contact with the member to be measured. Long strength Measures the radius of curvature of the object to be measured.
- this radius of curvature measurement machine is suitable for measuring a very small change in radius of curvature, that is, the amount of wear of the cutting edge, it cannot measure a wide range of radius of curvature up to a small radius of curvature and a large radius of curvature. .
- the abutting member having two expanded sides must be large enough to correspond to the radius of curvature of the object to be measured. .
- Patent Document 1 JP-A-7-234101
- An object of the present invention is to provide a small-sized curvature radius measuring instrument capable of measuring a wide range of curvature radii, and preferably fits in a workwear breast pocket. It is an object of the present invention to provide a radius of curvature measuring device having such a size.
- the R caliper according to the present invention includes a fixed piece protruding from one end of a long main body, a movable base supported by the main body in a slidable manner, and a movable base integrally formed with the movable base. And the opposing surfaces of the fixed piece and the movable piece are widened at an angle ⁇ .
- the R carrier of the present invention has an arc-shaped portion of an object to be measured brought into contact with three portions of a fixed piece, a long body, and a movable piece, and the R-caliper is moved based on the moving amount of the origin force of the movable table at that time. It measures the radius of curvature of the arc-shaped part of the measured object.
- the R calipers of the present invention can measure the radius of curvature of an object to be measured, so it is naturally possible to determine the radius of a cylinder, a pipe, or the like, and can also determine the diameter as necessary. It is possible.
- FIG. 1 is a schematic configuration diagram for explaining an R carrier according to the present invention.
- 1 is a long main body.
- a fixing piece 2 is formed so as to protrude integrally with the main body.
- Reference numeral 3 denotes a movable base slidably supported by the main body, and the movable base 3 is formed with a movable piece 4 projecting physically.
- the opposite surface 2A of the fixed piece 2 and the surface 4A of the movable piece 4 are formed so as to expand at an angle ⁇ .
- a main scale is formed at a constant interval on the main body 1 and a sub-scale is formed on the movable base 3.
- the R caliper As the measuring means, a measuring means known in the art of calipers can be used, such as a digital measuring means which is not limited to the configuration of the main scale and the vernier.
- L indicates the total length of the R calipers
- H indicates the protruding height of the fixed piece and the movable piece.
- FIG. 2 is an explanatory view of the measurement principle, in which the arc-shaped part of the DUT 5 is brought into contact with three points: the surface 1A of the main body 1, the surface 2A of the fixed piece 2, and the surface 4A of the movable piece 4. And the contact positions with each surface are a, b, and c.
- ⁇ ⁇ ° be the open angle between the fixed piece and the movable piece
- p be the vertex
- k ° Zaoc.
- the straight line oa and the surface 2A of the fixed piece 2 are tangent surfaces of the arc-shaped part of the measured object
- the straight line ob and the surface 1A of the main body 1A are orthogonal to each other. Therefore, the bisector of Z aob passes through the intersection d of plane 2A and plane 1A, and A aod and A bod are the same triangle.
- the line segment oa, the line segment ob, and the line segment oc are all equal to the radius of curvature r of the arc-shaped portion of the DUT 6.
- the length of the line segment de corresponds to the moving amount X of the movable piece 4 from the origin.
- Equation 1 the relationship between r and X is expressed by the following Equation 1.
- Equation (2) the expansion angle 0 between the fixed piece and the movable piece is constant regardless of the position of the movable piece. Therefore, since l / 2tan (45-0 / 4) is a constant, the radius of curvature r of the arc to be measured can be derived by measuring the position X of the movable piece.
- the angle ⁇ formed by the movable piece and the fixed piece is a force that can be arbitrarily determined from the range of the radius of curvature to be measured. It is preferable that the angles have a relationship.
- the reading of the moving distance X of the movable piece is not limited to the graduation type as shown in FIG. 2, but may be a digital type, and the radius or diameter may be indicated according to the purpose of use. Just fine.
- the R calipers of the present invention fix the three measurement points by moving the movable piece, even if the protrusion height H of the fixed piece and the movable piece is not so large, Force with small radius of curvature It is possible to measure a wide range of radius of curvature or diameter up to the object to be measured with relatively large radius of curvature.
- the R calipers of the present invention can easily measure a radius of an object to be measured up to a small diameter force and a large diameter. Also, since it can be formed in a small size, it can be carried at the time of work and has excellent workability.
- FIG. 1 is a schematic configuration diagram of an R caliper of the present invention.
- FIG. 2 is an explanatory view of the measurement principle of the present invention R caliper
- Fig. 1 shows an R caliper having a total length L of 170mm, a fixed piece and a movable piece having a height H of 22mm (total height of 36mm), and a fixed piece and a movable piece. On the opposing side An expansion angle of 123.855 ° was created.
- this widening angle of 123.855 ° is adopted.
- a measuring means commonly used in calipers that is, a main scale in mm units is formed on the main body.
- measuring means capable of reading with an accuracy of lZlOmm can be employed.
- a cylinder having a diameter of 20 mm, a nozzle having a diameter of 150 mm and a diameter of 300 mm were measured with an accuracy of 0.2 mm or less, respectively.
- the configuration as described in Patent Document 1 has an expansion angle of 118 °, a height (depth) to an intersection of Vs formed by two expanded sides is 45 mm, and a pushing length is Using a radius-of-curvature measuring device of a type read by a dial gauge, a cylinder having a diameter of 20 mm, a pipe having a diameter of 15 Omm and a pipe having a diameter of 300 mm were measured in the same manner as in the above example. For a cylinder with a diameter of 20 mm, the measurement was accurate. Force that could be measured accurately even for pipes with a diameter of 150 mm. It was time-consuming to readjust the reading range of the dial gauge. Also, in the case of a 300mm diameter neuve, it touched the tip of the two expanded sides and protruded, and the two sides were not perpendicular to the arc of the DUT.
- the movable piece is moved in accordance with the radius of the object to be measured, it is possible to measure a wide range of curvature radii even with a small diameter force and a large diameter.
- the protruding heights of the movable piece and the fixed piece are constant, but they can be seen by moving the movable piece.
- the projection height has been changed, and even if the object to be measured has a large diameter, three points can be fixed, so accurate measurement is possible. Can be realized. Accordingly, a measuring instrument that can be stored in the breast pocket of the work clothes can be realized, and has an effect that it can be used in the wood processing field of furniture and the like, the sheet metal processing field, and many other fields.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006600006U JP3129510U (ja) | 2003-12-25 | 2004-12-20 | Rキャリパー |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003436797 | 2003-12-25 | ||
JP2003-436797 | 2003-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005064267A1 true WO2005064267A1 (ja) | 2005-07-14 |
Family
ID=34737094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019044 WO2005064267A1 (ja) | 2003-12-25 | 2004-12-20 | Rキャリパー |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP3129510U (ja) |
WO (1) | WO2005064267A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011076356A1 (en) * | 2009-12-21 | 2011-06-30 | Tenova S.P.A. | Method and device for measuring cylinders |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5880501A (ja) * | 1981-11-10 | 1983-05-14 | Fukuo Kuroda | 測定具 |
JPS5990803U (ja) * | 1982-12-09 | 1984-06-20 | 三菱重工業株式会社 | 直径用ノギス |
-
2004
- 2004-12-20 JP JP2006600006U patent/JP3129510U/ja not_active Expired - Lifetime
- 2004-12-20 WO PCT/JP2004/019044 patent/WO2005064267A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5880501A (ja) * | 1981-11-10 | 1983-05-14 | Fukuo Kuroda | 測定具 |
JPS5990803U (ja) * | 1982-12-09 | 1984-06-20 | 三菱重工業株式会社 | 直径用ノギス |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011076356A1 (en) * | 2009-12-21 | 2011-06-30 | Tenova S.P.A. | Method and device for measuring cylinders |
CN102686971A (zh) * | 2009-12-21 | 2012-09-19 | 特诺恩股份公司 | 用于测量圆柱体的方法和装置 |
US8819953B2 (en) | 2009-12-21 | 2014-09-02 | Tenova S.P.A. | Method and device for measuring cylinders |
RU2529695C2 (ru) * | 2009-12-21 | 2014-09-27 | ТЕНОВА С.п.А. | Способ и устройство для измерения цилиндров |
KR101487069B1 (ko) * | 2009-12-21 | 2015-01-28 | 테노바 에스.피.에이. | 실린더를 측정하기 위한 방법 및 장치 |
Also Published As
Publication number | Publication date |
---|---|
JP3129510U (ja) | 2007-03-01 |
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