JPS61215901A - Radius of curvature measuring instrument - Google Patents
Radius of curvature measuring instrumentInfo
- Publication number
- JPS61215901A JPS61215901A JP5596885A JP5596885A JPS61215901A JP S61215901 A JPS61215901 A JP S61215901A JP 5596885 A JP5596885 A JP 5596885A JP 5596885 A JP5596885 A JP 5596885A JP S61215901 A JPS61215901 A JP S61215901A
- Authority
- JP
- Japan
- Prior art keywords
- radius
- curvature
- measured
- contact
- fixed contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/213—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring radius of curvature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は５円形、円弧形状を有する鋼管、Ｕ型鋼等の曲
率半径測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a curvature radius measuring device for steel pipes, U-shaped steel, etc. having a five-circular or circular arc shape.
［従来の技術１
第７図は、従来の３点法を用いた曲率半径測定装置ｌを
示す斜視図であり、この曲率半径測定装Ｗ１１は、第８
図、第９図に示すように、被測定面２に当接可能とされ
る２つの固定接触子３と、両固定接触子３の中央部に配
置され、該両固定接触子３が被測定面２に当接する状態
下で被測定面２に当接して出入変位する測定針４とを備
えている。すなわち、曲率半径測定装Ｍｌは、測定針４
の変位量を測定することにより１両固定接触子３の配設
スパンと上記測定針４の変位量とから被測定面２の曲率
半径を近似的に求めることを可能としている。[Prior art 1] FIG. 7 is a perspective view showing a conventional curvature radius measuring device W11 using the three-point method.
As shown in FIG. 9, two fixed contacts 3 that can come into contact with the surface 2 to be measured are arranged at the center of both fixed contacts 3, and both fixed contacts 3 are The measuring needle 4 is provided with a measuring needle 4 that comes into and out of contact with the surface 2 to be measured while in contact with the surface 2 . That is, the curvature radius measuring device Ml has a measuring needle 4
By measuring the amount of displacement, it is possible to approximately determine the radius of curvature of the surface to be measured 2 from the span of the two fixed contacts 3 and the amount of displacement of the measuring needle 4.
［発明が解決しようとする問題点１
しかしながら、上記従来の曲率半径測定装置ｌにあって
は１両固定接触子３の被測定面２に対する接触部が球面
座となっており、被測定面２と固定接触子３とが点接触
となる。したがって、測定者がこの曲率半径測定装置ｌ
を被測定面２に押し当て、測定する場合には、第８図、
第９図に矢印で示すように、測定者の手の振れ等によっ
て装置本体が揺動して測定表示値がたえず変動したり、
或いは装置本体を被測定面２に対して垂直に設定、保持
しに＜＜、迅速に高い精度の測定を行うことに困難があ
る。[Problem to be Solved by the Invention 1] However, in the conventional curvature radius measuring device 1 described above, the contact portion of the fixed contactor 3 with respect to the surface to be measured 2 is a spherical seat, and the surface to be measured 2 and the fixed contact 3 are in point contact. Therefore, if the measurer uses this curvature radius measuring device
When measuring by pressing the to-be-measured surface 2, the
As shown by the arrow in Figure 9, the measurement display value may fluctuate constantly due to the shake of the measurer's hand, etc.
Alternatively, it is difficult to set and hold the main body of the apparatus perpendicularly to the surface 2 to be measured, thereby making it difficult to quickly perform high-precision measurements.
また、上記従来の曲率半径測定装Ｍｌにあっては、測定
される測定針４の変位量検出信号を、この曲率半径測定
装ａｔｌと別体のコンピュータに入力して演算処理して
おり、演算処理装置の可搬性に難点があり、曲率半径の
迅速な測定、生産ライン内におけるインライン測定を困
難にしている。In addition, in the conventional curvature radius measuring device Ml, the displacement detection signal of the measuring needle 4 to be measured is input to a computer separate from this curvature radius measuring device atl and processed. The portability of the processing equipment is problematic, making rapid measurement of the radius of curvature and in-line measurement within the production line difficult.
なお、上記従来の曲率半径測定装置１にあっては、固定
接触子３と測定針４が装置本体に一体化されていること
から、被測定面２の曲率半径の大きさに応じて両固定接
触子３の配設スパンを異ならせる場合には、装置の全体
を交換する必要がある。In addition, in the conventional curvature radius measuring device 1 described above, since the fixed contact 3 and the measuring needle 4 are integrated into the main body of the device, the fixed contact 3 and the measuring needle 4 are fixed depending on the size of the radius of curvature of the surface to be measured 2. In order to change the arrangement span of the contacts 3, it is necessary to replace the entire device.
本発明の第１は、曲率半径の測定を迅速かつ高精度に行
うことを目的とする。A first object of the present invention is to measure the radius of curvature quickly and with high precision.
また１本発明の第２は、あらゆる測定場所において、曲
率半径の測定を迅速かつ高精度に行うことを目的とする
。A second aspect of the present invention is to quickly and accurately measure the radius of curvature at any measurement location.
［問題点を解決するための手段］
本発明の第１は、被測定面に当接可能とされる２つの固
定接触子を愉える測定ベースと、測定ベースに支持され
、上記両固定接触子が被測定面に当接する状態下で被測
定面に当接して変位する測定針を備え、該測定針の変位
量を検出する検出部とを有してなる曲率半径測定装置に
おいて、少なくとも一方の固定接触子の被測定面に対す
る接触部を、両固定接触子を結ぶ線に交差する方向に延
びる線状に形成するようにしたものである。[Means for Solving the Problems] A first aspect of the present invention is to provide a measurement base having two fixed contacts that can come into contact with a surface to be measured; A radius of curvature measuring device comprising a measuring needle that is displaced by contacting the surface to be measured under a condition in which the measuring needle is in contact with the surface to be measured, and a detection section that detects the amount of displacement of the measuring needle. The contact portion of the fixed contact with the surface to be measured is formed in a linear shape extending in a direction intersecting a line connecting both fixed contacts.
また１本発明の第２は、被測定面に当接可能とされる２
つの固定接触子を備える測定ベースと、測定ベースに支
持され、上記両固定接触子が被測定面に当接する状態下
で被測定面に当接して変位する測定針を備え、＃測定針
の変位量を検出する検出部とを有してなる曲率半径測定
装置において、少なくとも一方の固定接触子の被測定面
に対する接触部を、両固定接触子を結ぶ線に交差する方
向に延びる線状に形成するとともに、前記検出部の検出
結果を表示する直接表示部と、外部からのトリが一信号
により前記検出部の検出結果を演算処理して被測定面の
曲率半径を演算するとともに、該演算結果を静止表示す
る曲率半径演算表示部と、上記曲率半径演算表示部の演
算結果をプリントアウトするプリント部とを備えてなる
ようにしたものである。In addition, the second aspect of the present invention is that the second aspect of the present invention is capable of contacting the surface to be measured.
a measuring base having two fixed contacts, and a measuring needle that is supported by the measuring base and is displaced by contacting the surface to be measured when both of the fixed contacts are in contact with the surface to be measured, #displacement of the measuring needle In the radius of curvature measuring device, the contact portion of at least one fixed contact with the surface to be measured is formed in a linear shape extending in a direction intersecting a line connecting both fixed contacts. At the same time, a direct display section that displays the detection results of the detection section and a bird from the outside process the detection results of the detection section using a single signal to calculate the radius of curvature of the surface to be measured. The curvature radius calculation display section statically displays the curvature radius calculation display section, and the curvature radius calculation display section prints out the calculation results of the curvature radius calculation display section.
［作 用］
本発明の第１によれば、少なくとも一方の固定接触子が
１両固定接触子を結ぶ線に交差する方向において、被測
定面に線接触することとなる。したがって、固定接触子
と測定針の被測定面に対する当接状態を安定化し、測定
針の振れを極小に抑え、検出部を被測定面に対して垂直
に設定、保持する状態で測定可能となり、曲率半径の測
定を迅速かつ高精度に行うことが可能となる。[Function] According to the first aspect of the present invention, at least one of the fixed contacts comes into line contact with the surface to be measured in a direction intersecting the line connecting the two fixed contacts. Therefore, the state of contact between the fixed contact and the measurement needle against the surface to be measured is stabilized, the deflection of the measurement needle is minimized, and measurement is possible with the detection section set and held perpendicular to the surface to be measured. It becomes possible to measure the radius of curvature quickly and with high precision.
また、本発明の第２は、直接表示部、曲率半径演算表示
部、プリント部を備えていることから、可搬性が良好と
なり、あらゆる測定場所において、測定と同時にその測
定結果を知ることが可能となり１曲率半径の測定を迅速
かつ高精度に行うことが可能となる。In addition, the second aspect of the present invention is that it is equipped with a direct display section, a curvature radius calculation display section, and a print section, so it has good portability, and it is possible to know the measurement results at the same time as the measurement at any measurement location. Therefore, it becomes possible to measure one radius of curvature quickly and with high precision.
［実施例］
まず１本発明において用いられる３点法による曲率半径
の測定原理について説明する。第３図に示すように、半
径Ｒを有する被測定面２に曲率半径ｒを有する２つの固
定接触子３を当接し１両固定接触子３の配設スパンを２
（ｒ＋ａ）とすると、前固定接触子３を結ぶ接線ＡＡと
、この接線ＡＡに平行な被測定面２の接線ＢＢとの距離
りを、測定針４の変位量を介して測定することにより、
被測定面２の曲率半径Ｒを下記（１）式で表わすことが
可能となる。[Example] First, the principle of measuring the radius of curvature by the three-point method used in the present invention will be explained. As shown in FIG. 3, two fixed contacts 3 having a radius of curvature r are brought into contact with a surface 2 to be measured having a radius R, and the installation span of one fixed contact 3 is reduced to 2.
(r+a), by measuring the distance between the tangent AA connecting the front fixed contact 3 and the tangent BB of the surface to be measured 2 parallel to this tangent AA through the displacement amount of the measuring needle 4,
The radius of curvature R of the surface to be measured 2 can be expressed by the following equation (1).
Ｒ＝ （（ｒ＋ａ）２／２ｈｌ ＋ （ｈ／２）−ｒ・
−（１）
、 ここで、固定接触子３の先端部の曲率半径ｒを無
視、すなわち固定接触子３の先端部をナイフェツジとす
る場合には、被測定面２の曲率半径Ｒは下記（２）式で
表わされる。R= ((r+a)2/2hl + (h/2)-r・
-(1), Here, if the radius of curvature r of the tip of the fixed contact 3 is ignored, that is, the tip of the fixed contact 3 is assumed to be a knife, the radius of curvature R of the surface to be measured 2 is as follows (2 ) is expressed by the formula.
Ｒ−（ａ／２ｈ）＋ （ｈ／２） −（２）第１図
は本発明の一実施例に係る曲率半径測定装置ｌＯを示す
正面図、第２図は曲率半径測定装置ｌＯの要部側面図で
ある。R-(a/2h)+ (h/2) -(2) Fig. 1 is a front view showing a radius of curvature measuring device IO according to an embodiment of the present invention, and Fig. 2 is a diagram showing the main components of the radius of curvature measuring device IO. FIG.
曲率半径測定装ｍｔｏは、被測定面１１に当接可能とさ
れる２つの固定接触子１２．１３を備える測定ベース！
４を有している。また１曲率半径測定装ａｌｌＯは、測
定ベース１４に支持され、前固定接触子１２．１３が被
測定面１１に当接する状態下で被測定面１１に当接して
変位する測定針１５を備え、該測定針１５の変位量を検
出する検出部１６を有している。測定ベース１４の前固
定接触子１２．１３は、それらの配設スパンを２ａもし
くは２（ａ＋ｒ）としている、また、検出部１６の測定
針１５は、前固定接触子１２．１３の中央部で１両固定
接触子１２．１３によって定まる平面に対し垂直方向に
出入変位するようになっている。検出部１６は、歪ゲー
ジ式変位計、差動トランス、マグネットスケール等を内
蔵し、測定針１５の変位量りを電気信号に変換可能とし
ている。The radius of curvature measurement device mto is a measurement base equipped with two fixed contacts 12 and 13 that can come into contact with the surface to be measured 11!
It has 4. Further, the 1 curvature radius measuring device allO is supported by the measurement base 14, and includes a measuring needle 15 that is displaced by contacting the surface to be measured 11 when the front fixed contact 12.13 is in contact with the surface to be measured 11, It has a detection section 16 that detects the amount of displacement of the measuring needle 15. The front fixed contact 12.13 of the measurement base 14 has an arrangement span of 2a or 2(a+r), and the measuring needle 15 of the detection unit 16 is located at the center of the front fixed contact 12.13. It is adapted to move in and out in a direction perpendicular to a plane defined by both fixed contacts 12 and 13. The detection unit 16 includes a strain gauge displacement meter, a differential transformer, a magnetic scale, etc., and is capable of converting the displacement of the measuring needle 15 into an electrical signal.
しかして、上記曲率半径測定装置１０は、前固定接触子
１２．１３の被測定面１１に対する接触部１２Ａ、１３
Ａを１両固定接触子１２．１３を結ぶ線に直交する方向
に延びる線状に形成している。Therefore, the curvature radius measuring device 10 has contact portions 12A and 13 of the front fixed contact 12.13 with respect to the surface to be measured 11.
A is formed into a linear shape extending in a direction perpendicular to the line connecting the two fixed contacts 12 and 13.
また、曲率半径測定装置１０は、検出部１６の検出結果
、すなわち測定針１５の変位量りを表示する直接表示部
１７を有している。The radius of curvature measuring device 10 also includes a direct display section 17 that displays the detection result of the detection section 16, that is, the displacement of the measuring needle 15.
また１曲率半径測定装置１０は、検出部１６の検出信号
と、スパン入力ダイヤル１８によって予め設定されてい
る前固定接触子１２．１３の配設スパン［２ａもしくは
２（ａ＋ｒ）］とに基づき、前記（１）式もしくは（２
）式を用いて被測定面１１の曲率半径を演算するととも
に、その演算結果を表示する曲率半径演算表示部１９を
有している。上記曲率半径演算表示部１９は、連続的に
変化する直接表示部１７の表示値を基に測定者が任意の
タイミングで外部入力スイッチ°２０を用いてトリガー
信号を与えることにより、その時点の検出部１６の検出
信号に基づいて上記曲率半径の演算を行い、その演算結
果の表示は次のトリガー信号が入るまで静止表示可能と
している。外部入力スイッチ２０は、手動スイッチもし
くはフットスイッチからなり、フットスイッチとする場
合には、測定者が測定時に検出部１６を両手で保持する
ことが可能となり、より高い精度の測定を行うことが可
能となる。Further, the 1 curvature radius measuring device 10 uses the detection signal of the detection unit 16 and the arrangement span [2a or 2(a+r)] of the front fixed contact 12.13, which is preset by the span input dial 18, to The above formula (1) or (2
) is used to calculate the radius of curvature of the surface to be measured 11, and also has a radius of curvature calculation display section 19 that displays the calculation results. The radius of curvature calculation display section 19 detects the current point by giving a trigger signal using the external input switch °20 at an arbitrary timing by the measurer based on the continuously changing display value of the direct display section 17. The radius of curvature is calculated based on the detection signal of the section 16, and the calculation result can be displayed statically until the next trigger signal is input. The external input switch 20 is a manual switch or a foot switch, and when a foot switch is used, the measurer can hold the detection unit 16 with both hands during measurement, allowing for higher precision measurement. becomes.
また１曲率半径測定装置１０は、上記曲率半径演算表示
部１９の演算結果をプリントアウトするプリント部２１
を有している。なお、２２は電源スィッチ、２３は零調
整スイッチ（リセットスイッチ）である、零調整スイッ
チ２３は、検出部１６の検出基準零レベルを決定すると
ともに、直接表示部１７および曲率半径演算表示部１９
の両者に対して検出信号レベルの零入力を行うことを可
能としている・
また、曲率半径測定装置１１０は、被測定面１１の曲率
半径および測定ピッチの大きさに応じて両固定接触子１
２．１３の配設スパンを異ならせている複数の測定ベー
ス１４を用意し、検出＄１６をそれら複数の測定ベース
１４のいずれかに着脱可能としている。２４は、測定ベ
ース１４と検出部１６との固定ねじである。すなわち、
上記曲率半径測定装置１０の使用において、両固定接触
子１２．１３の配設スパンが被測定面１１の曲率半径に
対して大きくなりすぎると、連続して変化している一面
の測定時に１曲率半径の変化を詳細に測定することがで
きず１両固定接触子１２．１３の間の被測定面１１の平
均的な曲率半径を測定することとなる。他方１両固定接
触子１２．１３の配設スパンを小さくしていくと、被測
定面１１の微小区間における曲率半径を測定することが
可能となり１曲率の変化については詳細に測定可能とな
るものの、測定針１５の変位量が小さくなるため、測定
誤差割合が大きくなり、曲率半径の測定精度が悪くなる
。したがって、上記曲率半径測定装置ｌＯの使用時には
、被測定面ｌｌの曲率半径の大小および測定ピッチに応
じて、適当な配設スパンの固定接触子１２．１３を備え
てなる測定ベース１４を用いる必要がある。Further, the curvature radius measuring device 10 includes a printing section 21 that prints out the calculation results of the curvature radius calculation display section 19.
have. Note that 22 is a power switch, and 23 is a zero adjustment switch (reset switch).
In addition, the curvature radius measuring device 110 can perform zero input of the detection signal level to both fixed contacts 1 according to the radius of curvature of the surface to be measured 11 and the size of the measurement pitch.
A plurality of measurement bases 14 having different installation spans of 2.13 are prepared, and the detection $16 can be attached to or detached from any of the plurality of measurement bases 14. 24 is a fixing screw between the measurement base 14 and the detection section 16. That is,
When using the radius of curvature measuring device 10, if the span of the fixed contacts 12 and 13 becomes too large relative to the radius of curvature of the surface to be measured 11, one curvature will be lost when measuring one surface that is continuously changing. Since changes in the radius cannot be measured in detail, the average radius of curvature of the surface to be measured 11 between the two fixed contacts 12 and 13 is measured. On the other hand, if the span of the two fixed contacts 12 and 13 is made smaller, it becomes possible to measure the radius of curvature in a minute section of the surface to be measured 11, and changes in one curvature can be measured in detail. , since the amount of displacement of the measuring needle 15 becomes smaller, the measurement error ratio increases and the measurement accuracy of the radius of curvature deteriorates. Therefore, when using the radius of curvature measuring device 1O, it is necessary to use a measurement base 14 equipped with fixed contacts 12, 13 of an appropriate installation span depending on the size of the radius of curvature of the surface to be measured 11 and the measurement pitch. There is.
上記実施例によれば１両固定接触子１２．１３の接触部
１２Ａ、１３Ａが、それらの固定接触子１２．１３を結
ス；線に直交する方向において被測定面１１に線接触す
ることとなり、したがって。According to the above embodiment, the contact portions 12A and 13A of one fixed contactor 12.13 are in line contact with the surface to be measured 11 in the direction perpendicular to the connecting line. ,therefore.
被測定面１１に対する固定接触子１２．１３および測定
針１５の接触状態を安定化させることが可能となる。こ
れにより、測定針１５の振れは極小に抑えられ、検出部
１６を被測定面１１に対する垂直方向に安定して設定、
保持することが可能となり、被測定面１１の曲率半径を
迅速かつ高精度に測定することが可能となる。It becomes possible to stabilize the contact state of the fixed contactor 12.13 and the measuring needle 15 with respect to the surface to be measured 11. As a result, the deflection of the measuring needle 15 is suppressed to a minimum, and the detection unit 16 is stably set in the direction perpendicular to the surface to be measured 11.
The radius of curvature of the surface to be measured 11 can be measured quickly and with high precision.
また、上記実施例によれば、曲率半径測定装置ｌＯが直
接表示部１７．曲率半径演算表示部１９、プリント部２
１を備えていることから、可搬性が良好となり、あらゆ
る測定場所において、測定と同時にその測定結果を知る
ことが可能となる。Further, according to the above embodiment, the radius of curvature measuring device 10 is directly connected to the display section 17. Curvature radius calculation display section 19, print section 2
1, it has good portability, and it is possible to know the measurement results at the same time as the measurement at any measurement location.
また、上記実施例によれば、被測定面１１の曲率半径お
よび測定ピッチの大きさに応じて、適当な配設スパンの
固定接触子１２．１３を備える測定ベース１４を用いる
ことにより、広範囲の曲率半径を高能率かつ高精度で測
定することが可能となる。また、固定接触子１２．１３
の接触部１２．１３が摩耗もしくは損傷した場合には、
測定ベース１４のみの交換によって、曲率半径測定装Ｗ
１ｉｏを迅速に修繕可能である。Further, according to the above embodiment, by using the measurement base 14 equipped with the fixed contacts 12, 13 having an appropriate installation span depending on the radius of curvature of the surface to be measured 11 and the size of the measurement pitch, a wide range of It becomes possible to measure the radius of curvature with high efficiency and precision. In addition, fixed contact 12.13
If the contact part 12.13 of is worn or damaged,
By replacing only the measurement base 14, the radius of curvature measurement device W can be installed.
1io can be repaired quickly.
第４図は本発明の変形例に係る曲率半径測定装置１３０
を示す正面図、第５図は第４図の側面図である。この曲
率半径測定装ａｔ３０が前記曲率半径測定装置ｉｏと異
なる点は、一方の固定接触子１２の接触部１２Ａのみを
線状とし、他方の固定接触子３１の接触部３１Ａは球面
状としたことのみにある。この曲率半径測定装！３０に
よる場合にも、一方の固定接触子１２の接触部１２Ａが
被測定面１１に線接触することとなり、前記曲率半径測
定装！！ｌＯにおけると同様に、固定接触子１２．１３
および測定針１５の被測定面１１に対する接触状態を安
定化し、被測定面１１の曲率半径を迅速かつ高精度に測
定することが可能である。FIG. 4 shows a curvature radius measuring device 130 according to a modified example of the present invention.
FIG. 5 is a side view of FIG. 4. This curvature radius measuring device at30 is different from the curvature radius measuring device io in that only the contact portion 12A of one fixed contact 12 is linear, and the contact portion 31A of the other fixed contact 31 is spherical. Only in This curvature radius measurement device! 30, the contact portion 12A of one of the fixed contacts 12 comes into line contact with the surface to be measured 11, so that the curvature radius measuring device! ! Fixed contact 12.13 as in lO
It is also possible to stabilize the contact state of the measuring needle 15 with the surface to be measured 11 and to measure the radius of curvature of the surface to be measured 11 quickly and with high precision.
以下２本発明の具体的実施結果について説明する。すな
わち１本発喫者等は、第１図に示した曲率半径測定装Ｍ
ＩＯを用い、旋盤によって精密加工された直径２００ｍ
５の円筒体の曲率半径を繰返し測定し、その測定精度お
よび測定１＠当りに要した測定時間を従来装置による場
合に対して比較した。なお、上記曲率半径測定装置ｌＯ
による曲率半径の測定手順は以下の通りである。Two specific implementation results of the present invention will be described below. In other words, a person who smokes one can use the radius of curvature measuring device M shown in Figure 1.
200m diameter precision machined using IO and lathe
The radius of curvature of the cylindrical body No. 5 was repeatedly measured, and the measurement accuracy and measurement time required per measurement were compared with those using a conventional device. In addition, the above-mentioned curvature radius measuring device lO
The procedure for measuring the radius of curvature is as follows.
（ａ）固定接触子１２．１３の長さが２０ｍｍで両固定
接触子１２．１３の配設スパンが１０ｍｍである測定ベ
ース１４に、検出部１６を装着し、固定ねじ２４を用い
て両者を固定するとともに、スパン入力ダイヤル１８を
１０ａｓに設定する。(a) The detection unit 16 is mounted on the measurement base 14, in which the length of the fixed contact 12.13 is 20 mm and the installation span of both fixed contacts 12.13 is 10 mm, and the fixing screw 24 is used to connect both of them. At the same time, the span input dial 18 is set to 10as.
Ｃｂ）’ＪＲ点調整平面台に測定ベース１４と検出部１
６を押し当て１両固定接触子１２．１３と測定針１５と
が同一面すなわち水平レベルにある状態を形成し、この
状態下で、零調整スイッチ２３をオンすることにより、
検出部１６の検出基準零レベルを決定するとともに、直
接表示部１７および曲率半径演算表示部１９の両者に対
する検出信号レベルの零入力を行う。Cb) 'Measurement base 14 and detection unit 1 on the JR point adjustment flat table
6 to form a state in which both fixed contacts 12 and 13 and the measuring needle 15 are on the same plane, that is, at a horizontal level, and in this state, by turning on the zero adjustment switch 23,
The detection reference zero level of the detection section 16 is determined, and the zero detection signal level is directly input to both the display section 17 and the radius of curvature calculation display section 19.
（Ｃ）次に測定ベース１４および検出部１６を被測定面
１１に当接し、直接表示部１７に表示される検出信号の
表示値が最高値を示す時点で、外部入力スイッチ２０を
オンする。これにより、曲率半径演算表示部１９が作動
し、被測定面１１の曲率半径が演算されるとともに、そ
の演算結果が静止表示される。また、この演算結果がプ
リント部２１に記録される。なお、曲率半径演算表示部
１９に表示された曲率半径の表示は、外部入力スイッチ
２０による次のトリが一信号の人力時点まで保持される
。(C) Next, the measurement base 14 and the detection section 16 are brought into contact with the surface to be measured 11, and when the display value of the detection signal directly displayed on the display section 17 shows the highest value, the external input switch 20 is turned on. As a result, the radius of curvature calculation display unit 19 is activated, and the radius of curvature of the surface to be measured 11 is calculated, and the calculation result is displayed statically. Further, this calculation result is recorded in the print section 21. Note that the display of the radius of curvature displayed on the radius of curvature calculation display section 19 is maintained until the next input signal by the external input switch 20 is manually input.
上記具体的測定作業を１０回繰返した後、以下の結果を
得た。まず、測定精度については、第６図に示すように
５本発明に係る曲率半径測定装置１０の使用により、従
来装置に比べて誤差並びにばらつきの小さい高精度の測
定が可能となることが認められた。また１曲率半径測定
装置ｔｌｏを使用した測定１回当りに要した測定時間は
３．１秒であり、従来装置による１４．７秒に比して極
めて迅速な測定が可能となることが認められた。After repeating the above specific measurement work 10 times, the following results were obtained. First, with regard to measurement accuracy, as shown in FIG. Ta. In addition, the measurement time required for one measurement using the tlo curvature radius measurement device was 3.1 seconds, which was recognized to be extremely rapid, compared to 14.7 seconds using the conventional device. Ta.
［発明の効果Ｊ
以上のように１本発明の第１は、被測定面に当接回部と
される２つの固定接触子を備える測定ベースと、測定ベ
ースに支持され、上記前固定接触子が被測定面に当接す
る状態下で被測定面に当接して変位する測定針を備え、
該測定針の変位量を検出する検出部とを有してなる曲率
半径測定装置において、少なくとも一方の固定接触子の
被測定面に対する接触部を１両固定接触子を結ぶ線に交
差する方向に延びる線状に形成するようにしたものであ
る。したがって、曲率半径の測定を迅速かつ高精度に行
うことが可能となる。[Effects of the Invention J As described above, the first aspect of the present invention is to provide a measurement base including two fixed contacts that contact a surface to be measured, and a front fixed contact supported by the measurement base. Equipped with a measuring needle that is displaced by contacting the surface to be measured under the condition that the needle is in contact with the surface to be measured,
In the radius of curvature measuring device, the contact portion of at least one of the fixed contacts with respect to the surface to be measured is arranged in a direction intersecting a line connecting the two fixed contacts. It is formed into an extending linear shape. Therefore, it becomes possible to measure the radius of curvature quickly and with high precision.
また、本発明の第２は、被測定面に当接可１戯とされる
２つの固定接触子を備える測定ベースと。The second aspect of the present invention is a measurement base including two fixed contacts that can come into contact with a surface to be measured.
測定ベースに支持され、上記前固定接触子が被測定面に
当接する状態下で被測定面に当接して変位する測定針を
備え、該測定針の変位量を検出する検出部とを有してな
る曲率半径測定装置において、少なくとも一方の固定接
触子の被測定面に対する接触部を、前固定接触子を結ぶ
線に交差する方向に延びる線状に形成するとともに、前
記検出部の検出結果を表示する直接表示部と、外部から
のトリガー信号により前記検出部の検出結果を演算処理
して被測定面の曲率半径を演算するとともに、該演算結
果を静止表示する曲率半径演算表示部と、上記曲率半径
演算表示部の演算結果をプリントアウトするプリント部
とを備えてなるようにしたものである。したがって、あ
らゆる測定場所において１曲率半径の測定を迅速かつ高
精度に行うことが可能となる。The measuring needle is supported by a measuring base and is displaced by contacting the surface to be measured under a condition in which the front fixed contact is in contact with the surface to be measured, and has a detection unit that detects the amount of displacement of the measuring needle. In the radius of curvature measurement device, a contact portion of at least one of the fixed contacts with respect to the surface to be measured is formed in a linear shape extending in a direction intersecting a line connecting the front fixed contacts, and the detection result of the detection portion is a direct display section for displaying; a curvature radius calculation display section for calculating the radius of curvature of the surface to be measured by calculating the detection result of the detection section using a trigger signal from the outside; and a radius of curvature calculation display section for statically displaying the calculation result; The apparatus further includes a printing section for printing out the calculation results of the radius of curvature calculation display section. Therefore, it is possible to quickly and accurately measure one radius of curvature at any measurement location.
第１図は本発明の一実施例に係る曲率半径測定装置を示
す正面図、第２図は同曲率半径測定装ｄの要部側面図、
第３図は３点法による曲率半径の測定原理を示す模式図
、第４ｒｊ４は本発明の変形例に係る曲率半径測定装置
を示す正面図、第５図は第４図の側面図、第６図は本発
明の効果を示す線図、第７図は従来装置を示す斜視図、
第８図は従来装置の測定状態を示す正面図、第９図は従
来装置の測定状態を示す平面図である。
１Ｏ１３０・・・曲率半径測定装置、
１１・・・被測定面。
１２．１３．３１・・・固定接触子、
１２Ａ、１３Ａ・・・接触部、１４・・・測定ベース、
１５・・・測定針、１６・・・検出部、１７・・・直接
表示部、
１９・・・曲率半径演算表示部、
２０・・・外部入力スイッチ、２１・・・プリント部。
代理人 弁理士 塩 川 修 治
第３図
第４図 ′ＭＩＩＪＳ図
第６ 図
Ｉ！Ｊ７図 Ｍ８図FIG. 1 is a front view showing a curvature radius measuring device according to an embodiment of the present invention, and FIG. 2 is a side view of essential parts of the same curvature radius measuring device d.
FIG. 3 is a schematic diagram showing the principle of measuring the radius of curvature using the three-point method, FIG. The figure is a line diagram showing the effect of the present invention, FIG. 7 is a perspective view showing a conventional device,
FIG. 8 is a front view showing the measuring state of the conventional device, and FIG. 9 is a plan view showing the measuring state of the conventional device. 1O130... Curvature radius measuring device, 11... Surface to be measured. 12.13.31... Fixed contact, 12A, 13A... Contact part, 14... Measurement base,
DESCRIPTION OF SYMBOLS 15... Measuring needle, 16... Detection part, 17... Direct display part, 19... Curvature radius calculation display part, 20... External input switch, 21... Print part. Agent Patent Attorney Osamu Shiokawa Figure 3 Figure 4 'MIIJS Figure 6 Figure I! J7 figure M8 figure
Claims (4)
備える測定ベースと、測定ベースに支持され、上記両固
定接触子が被測定面に当接する状態下で被測定面に当接
して変位する測定針を備え、該測定針の変位量を検出す
る検出部とを有してなる曲率半径測定装置において、少
なくとも一方の固定接触子の被測定面に対する接触部を
、両固定接触子を結ぶ線に交差する方向に延びる線状に
形成したことを特徴とする曲率半径測定装置。(1) A measurement base equipped with two fixed contacts that can come into contact with the surface to be measured, and a measurement base that is supported by the measurement base and contacts the surface to be measured under the condition that both of the fixed contacts contact the surface to be measured. In a radius of curvature measuring device comprising a measuring needle that is displaced in contact with the measuring needle and a detection section that detects the amount of displacement of the measuring needle, the contact portion of at least one fixed contact with the surface to be measured is connected to both fixed contacts. A radius of curvature measuring device characterized in that it is formed in a linear shape extending in a direction intersecting a line connecting the children.
じて両固定接触子の配設スパンを異ならせている複数の
測定ベースのそれぞれに着脱可能とされる特許請求の範
囲第１項に記載の曲率半径測定装置。(2) The detection unit is removably attached to each of a plurality of measurement bases in which the installation spans of both fixed contacts are made different depending on the size of the radius of curvature of the surface to be measured. The curvature radius measuring device according to item 1.
備える測定ベースと、測定ベースに支持され、上記両固
定接触子が被測定面に当接する状態下で被測定面に当接
して変位する測定針を備え、該測定針の変位量を検出す
る検出部とを有してなる曲率半径測定装置において、少
なくとも一方の固定接触子の被測定面に対する接触部を
、両固定接触子を結ぶ線に交差する方向に延びる線状に
形成するとともに、前記検出部の検出結果を表示する直
接表示部と、外部からのトリガー信号により前記検出部
の検出結果を演算処理して被測定面の曲率半径を演算す
るとともに、該演算結果を静止表示する曲率半径演算表
示部と、上記曲率半径演算表示部の演算結果をプリント
アウトするプリント部とを備えてなることを特徴とする
曲率半径測定装置。(3) A measurement base equipped with two fixed contacts that can come into contact with the surface to be measured, and a measurement base that is supported by the measurement base and comes into contact with the surface to be measured when both of the fixed contacts are in contact with the surface to be measured. In a radius of curvature measuring device comprising a measuring needle that is displaced in contact with the measuring needle and a detection section that detects the amount of displacement of the measuring needle, the contact portion of at least one fixed contact with the surface to be measured is connected to both fixed contacts. a direct display section that displays the detection results of the detection section; and a direct display section that displays the detection results of the detection section; A radius of curvature comprising: a radius of curvature calculation display unit that calculates the radius of curvature of a surface and statically displays the calculation results; and a print unit that prints out the calculation results of the radius of curvature calculation display unit. measuring device.
じて両固定接触子の配設スパンを異ならせている複数の
測定ベースのそれぞれに着脱可能とされる特許請求の範
囲第３項に記載の曲率半径測定装置。(4) The detection unit is removably attached to each of a plurality of measurement bases in which the installation spans of both fixed contacts are made different depending on the size of the radius of curvature of the surface to be measured. The curvature radius measuring device according to item 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5596885A JPS61215901A (en) | 1985-03-22 | 1985-03-22 | Radius of curvature measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5596885A JPS61215901A (en) | 1985-03-22 | 1985-03-22 | Radius of curvature measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61215901A true JPS61215901A (en) | 1986-09-25 |
Family
ID=13013867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5596885A Pending JPS61215901A (en) | 1985-03-22 | 1985-03-22 | Radius of curvature measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61215901A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03200005A (en) * | 1989-12-22 | 1991-09-02 | Ppg Ind Inc | Method and device for measuring contour of article |
| WO2003076869A1 (en) * | 2002-03-13 | 2003-09-18 | Borealis Technology Oy | Apparatus for inspecting deformation of pipes |
| JP2016065876A (en) * | 2011-04-07 | 2016-04-28 | カール マール ホールディング ゲーエムベーハー | Measuring device having transmitting circuit for transmitting measured value by radio |
-
1985
- 1985-03-22 JP JP5596885A patent/JPS61215901A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03200005A (en) * | 1989-12-22 | 1991-09-02 | Ppg Ind Inc | Method and device for measuring contour of article |
| WO2003076869A1 (en) * | 2002-03-13 | 2003-09-18 | Borealis Technology Oy | Apparatus for inspecting deformation of pipes |
| US7159477B2 (en) | 2002-03-13 | 2007-01-09 | Borealis Technology Oy | Apparatus for inspecting deformation of pipes |
| JP2016065876A (en) * | 2011-04-07 | 2016-04-28 | カール マール ホールディング ゲーエムベーハー | Measuring device having transmitting circuit for transmitting measured value by radio |
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