JPH02201202A - Clearance measurement using pressure sensitive paper - Google Patents

Clearance measurement using pressure sensitive paper

Info

Publication number
JPH02201202A
JPH02201202A JP2242189A JP2242189A JPH02201202A JP H02201202 A JPH02201202 A JP H02201202A JP 2242189 A JP2242189 A JP 2242189A JP 2242189 A JP2242189 A JP 2242189A JP H02201202 A JPH02201202 A JP H02201202A
Authority
JP
Japan
Prior art keywords
color
paper
pressure
gap
sensitive paper
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.)
Granted
Application number
JP2242189A
Other languages
Japanese (ja)
Other versions
JPH07104122B2 (en
Inventor
Hiroyuki Kitabayashi
北林 博行
Tadayuki Ishikawa
忠幸 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP2242189A priority Critical patent/JPH07104122B2/en
Publication of JPH02201202A publication Critical patent/JPH02201202A/en
Publication of JPH07104122B2 publication Critical patent/JPH07104122B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Landscapes

  • Force Measurement Appropriate To Specific Purposes (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

PURPOSE:To enable measurement of a clearance value between parts quantitatively and at a high accuracy by reading a density level in color formation of a pressure sensitive paper placed between the parts to determine the clearance value. CONSTITUTION:For example, a pressure sensitive paper is made up of two sheets of paper 1 and 2 formed respectively in three layers and one of the paper 1 comprises a microcapsule which contains a support 1a, an intermediate layer 1b and a color forming agent and the other paper 2 is coated with a color developing agent 2a in stead of the microcapsule 1c. Then, when the microcapsule 1c of the paper 1 is broken by a pressure, the color forming agent is adsorbed by the color developing agent 2a of the other paper 2 and a chemical reaction is caused to form a color. Then, a density level of the color formation is converted into a clearance value between objects to be measured using a relationship chart between the density of color formation ad the clearance value prepared beforehand.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、部品相互間の隙間の測定法に係り、特に組合
せ部品の合わせ面に生しる隙間量の測定法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for measuring gaps between parts, and more particularly to a method for measuring the amount of gaps created between mating surfaces of assembled parts.

[従来の技術] 従来、組合せ部品の合わせ面の隙間を測定する手段とし
て、下記の方法が用いられている。
[Prior Art] Conventionally, the following method has been used as a means for measuring the gap between mating surfaces of assembled parts.

(1)絹合せ面の形状を個別に単品で測定し、各々の測
定結果から組合せ時の隙間を推定する。
(1) Measure the shape of the silk mating surfaces individually and estimate the gap when assembled from each measurement result.

(2)隙間測定をしようとする組合せ面の片方に鉛丹あ
るいは一般に青たけと呼ばれる顔料を油で溶いたものを
均一に薄く塗布し、組合せ面を相互に密着させ、該組合
せ面の他方に付着した顔料の濃淡により隙間の量を判定
・評価する。
(2) Apply red lead or a pigment commonly called Aotake dissolved in oil evenly and thinly to one of the mating surfaces on which you want to measure the gap, bring the mating surfaces into close contact with each other, and then The amount of gaps is determined and evaluated based on the density of the attached pigment.

[発明が解決しようとする課題] しかしながら前記従来の隙間測定法には次のような問題
点があった。
[Problems to be Solved by the Invention] However, the conventional gap measurement method has the following problems.

(1)組合せ面の形状を単品で測定する方法においては
、単体の面形状を三次元的にとらえることが難しく、ま
してそれを組合せた状態での隙間を推定することは更に
難しい。
(1) In the method of measuring the shape of a combined surface individually, it is difficult to capture the shape of the single surface three-dimensionally, and it is even more difficult to estimate the gap when the combined surfaces are combined.

(2)M料の転写によって測定する方法は、使用する顔
料に添加する油の量や塗布のしかたによって顔料膜厚に
ばらつきを生じるとともに、組合せ時の押し付は力等も
作業者によって異なるので、隙間量の判定にばらつきを
生じやすい、また隙間量の数値化は作業者の経験と勘に
よって行う官能評価であるため、同−作業者であっても
その値はばらつきが大きく、人手による作業であるため
定量的評価ができない。
(2) The method of measuring by transferring the M material causes variations in the pigment film thickness depending on the amount of oil added to the pigment used and the method of application, and the pressing force used during assembly also varies depending on the operator. , it is easy to cause variations in the judgment of the amount of gap, and since the numerical value of the amount of gap is a sensory evaluation performed based on the experience and intuition of the operator, the values vary widely even among the same number of workers, and manual work is difficult. Therefore, quantitative evaluation is not possible.

本発明は上述した従来の問題点に着目し、人的作業、人
為的判断を廃し、高精度の定量的測定方法を提供するこ
とを目的とする。
The present invention focuses on the above-mentioned conventional problems, and aims to provide a highly accurate quantitative measurement method that eliminates human work and human judgment.

[!!題を解決するための手゛段] 上記目的を達成するために本発明に係る感圧紙を用いた
隙間測定法は、加圧されることによって発色する感圧紙
を被測定物間に挟み、該被測定物に圧力を加えることに
よって生じる発色の濃淡を、あらかじめ作成した発色濃
度と隙間量との関係図表を用いて被測定物間の隙間量に
換算するように構成した。
[! ! Means for Solving the Problem] In order to achieve the above object, the gap measurement method using pressure-sensitive paper according to the present invention involves sandwiching pressure-sensitive paper that develops color when pressure is applied between objects to be measured, and measuring the gap between objects to be measured. The system was configured so that the shade of color produced by applying pressure to the object to be measured was converted into the amount of gap between the objects to be measured using a previously prepared relationship chart between the color density and the amount of gap.

[作用] 上記構成によれば、部品相互間に挟んだ感圧紙の発色の
濃淡を読み取って、隙間量を求めるようにしたので、部
品相互間の隙間量を定flk的にかつ高精度で測定する
ことができる。
[Function] According to the above configuration, the amount of gap is determined by reading the shade of color of the pressure-sensitive paper sandwiched between the parts, so the amount of gap between the parts can be measured with constant flk and with high precision. can do.

[実施例] 以下にζ 本発明に係る感圧紙を用いた隙間測定法の実
施例について、図面を参照して詳細に説明する。
[Example] Hereinafter, an example of the gap measuring method using pressure-sensitive paper according to the present invention will be described in detail with reference to the drawings.

感圧紙は元来圧力分布を発色の濃淡で検出するものであ
り、本発明において使用する感圧紙は第1図に示すよう
にそれぞれ3層からなる2枚の紙で構成され、一方の紙
lは支持体1a、中間層lb、発色剤を内蔵するマイク
ロカプセル1cからなり、他方の紙2にはマイクロカプ
セル1cの代わりに顕色剤2aが塗布されていて、前記
紙lのマイクロカプセル1cが圧力によって破壊される
と、発色剤を他方の紙2の顕色剤2aが吸着し、化学反
応を起こして発色する。圧力と発色濃度との関係は第2
図に示す通りで、圧力が高い程前記発色剤を内蔵するマ
イクロカプセルの破壊度合が大きいため、発色濃度が上
昇する。また隙間の大きさと感圧紙に加わる圧力との関
係を概念的に示すと第3図のようになる。このことから
隙間の大きさと発色濃度との関係を調べた結果、第4図
に示す通りとなり、感圧紙の発色濃度から隙間量への変
換が可能であることを確認することができた。
Pressure-sensitive paper originally detects pressure distribution by the shade of color, and the pressure-sensitive paper used in the present invention is composed of two sheets of paper each consisting of three layers, as shown in Figure 1. is composed of a support 1a, an intermediate layer lb, and microcapsules 1c containing a coloring agent, and the other paper 2 is coated with a color developer 2a instead of the microcapsules 1c, and the microcapsules 1c of the paper 1 are When destroyed by pressure, the color developer 2a of the other paper 2 adsorbs the color former, causing a chemical reaction to develop color. The relationship between pressure and color density is the second
As shown in the figure, the higher the pressure, the greater the degree of destruction of the microcapsules containing the coloring agent, and therefore the color density increases. Further, the relationship between the size of the gap and the pressure applied to the pressure-sensitive paper is conceptually shown in FIG. 3. Based on this, the relationship between the size of the gap and the color density was investigated, and the result was as shown in FIG. 4, confirming that it was possible to convert the color density of the pressure-sensitive paper to the amount of gap.

そこで第5図に示すように直径100mm、 厚さ15
mmで、両面を平面度0.5μm以下にラップ仕上げし
たテストピースを2個製作し、うち1個のテストピース
3の片面の中心に最大65μmの凹部3aを設け、組合
せ時に65μmの隙間ができるようにした。
Therefore, as shown in Figure 5, the diameter is 100 mm and the thickness is 15 mm.
Two test pieces are manufactured with both sides lapped to a flatness of 0.5 μm or less, and one of the test pieces 3 is provided with a recess 3a of maximum 65 μm in the center of one side, creating a gap of 65 μm when assembled. I did it like that.

上記の2個のテストピース3,40間に感圧紙1、 2
を挟み、第6図に示すように該テストピ−ス3,4の上
下にウレタンゴム5を配置した上、アムスラ試験機を用
いて1000 k gの荷重を加え、感圧紙に発色を生
じさせた。この感圧紙を第7図に示すように、測定部(
スキャナ)6、出力装置7、演算装置8、モニタ9から
なる測定システム(富士写真フィルム株式会社製プレス
ケール計測システム)により発色濃度分布を測定した。
Pressure sensitive paper 1, 2 between the above two test pieces 3, 40
Urethane rubber 5 was placed above and below the test pieces 3 and 4 as shown in Figure 6, and a load of 1000 kg was applied using an Amsura tester to cause color development on the pressure-sensitive paper. . As shown in Fig. 7, this pressure-sensitive paper is
The color density distribution was measured using a measurement system (prescale measurement system manufactured by Fuji Photo Film Co., Ltd.) consisting of a scanner) 6, an output device 7, an arithmetic device 8, and a monitor 9.

この発色濃度分布データを、第4図に示す発色濃度−隙
間量変換グラフに基づいて作成しに変換ソフトにより隙
間量データに変換し、第8図に示す隙間量データを得た
This coloring density distribution data was created based on the coloring density-gap amount conversion graph shown in FIG. 4, and was converted into gap amount data using conversion software to obtain the gap amount data shown in FIG. 8.

本実施例では部品間の隙間量の測定について述べたがこ
れに限るものではなく、たとえば特定の部品の平面度を
測定する場合は、基準となる平面を有する標準片と被測
定物との間に感圧紙を挟み、一定圧力で両者を加圧する
ことにより被測定物の平面度を定量的に求めることがで
きる。
Although this example describes the measurement of the amount of gap between parts, the measurement is not limited to this. For example, when measuring the flatness of a specific part, it is necessary to The flatness of the object to be measured can be quantitatively determined by sandwiching a pressure-sensitive paper between the two and applying constant pressure between the two.

[発明の効果] 以上説明したように本発明によれば、感圧紙が有する特
性を利用して発色濃度から機械的に部品間の隙間を算出
するようにしたので、部品を組合せたときの実質的な隙
間量の測定が高精度で定量的に得られるとともに、隙間
測定時間を従来に比べて短縮することが可能となる。
[Effects of the Invention] As explained above, according to the present invention, the gap between parts is calculated mechanically from the color density using the characteristics of pressure-sensitive paper, so that the actual gap when the parts are combined is The gap amount can be measured quantitatively with high precision, and the gap measurement time can be shortened compared to the conventional method.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は感圧紙の発色原理を示す説明図、第2図は圧力
と発色濃度との関係を示すグラフ、第3図は隙間量と感
圧紙に加わる圧力との関係を概念的に示すグラフ、第4
図は隙間量と発色濃度との関係を示すグラフ、第5図は
実施例で用いたテストピースの斜視図、第6図はテスト
ピースを加圧するときの断面図、 第7図は発色濃度分布測定シ ステムの斜視図、 第8図はテストピースにおける 隙間量分布図である。 l。 2・・・・・・感圧紙 3゜ 4・・・・・・テストピース
Figure 1 is an explanatory diagram showing the coloring principle of pressure-sensitive paper, Figure 2 is a graph showing the relationship between pressure and coloring density, and Figure 3 is a graph conceptually showing the relationship between gap amount and pressure applied to pressure-sensitive paper. , 4th
The figure is a graph showing the relationship between the gap amount and color density, Figure 5 is a perspective view of the test piece used in the example, Figure 6 is a cross-sectional view when pressurizing the test piece, and Figure 7 is color density distribution. A perspective view of the measurement system, and FIG. 8 is a gap distribution diagram in the test piece. l. 2...Pressure sensitive paper 3゜4...Test piece

Claims (1)

【特許請求の範囲】[Claims] 加圧されることによって発色する感圧紙を被測定物間に
挟み、該被測定物に圧力を加えることによって生じる発
色の濃淡を、あらかじめ作成した発色濃度と隙間量との
相関表を用いて被測定物間の隙間量に換算するようにし
たことを特徴とする感圧紙を用いた隙間測定法。
Pressure-sensitive paper that develops color when pressure is applied is placed between objects to be measured, and the shade of color produced by applying pressure to the object is measured using a pre-created correlation table between color density and gap amount. A gap measurement method using pressure-sensitive paper, characterized in that the gap is converted into the amount of gap between objects to be measured.
JP2242189A 1989-01-31 1989-01-31 Gap measurement method using pressure sensitive paper Expired - Lifetime JPH07104122B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2242189A JPH07104122B2 (en) 1989-01-31 1989-01-31 Gap measurement method using pressure sensitive paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2242189A JPH07104122B2 (en) 1989-01-31 1989-01-31 Gap measurement method using pressure sensitive paper

Publications (2)

Publication Number Publication Date
JPH02201202A true JPH02201202A (en) 1990-08-09
JPH07104122B2 JPH07104122B2 (en) 1995-11-13

Family

ID=12082214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2242189A Expired - Lifetime JPH07104122B2 (en) 1989-01-31 1989-01-31 Gap measurement method using pressure sensitive paper

Country Status (1)

Country Link
JP (1) JPH07104122B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009243919A (en) * 2008-03-28 2009-10-22 Railway Technical Res Inst Rail joint gap measuring apparatus and gap measuring apparatus
JP2016179520A (en) * 2015-03-24 2016-10-13 株式会社ディスコ Exchange method for cutting blade

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009243919A (en) * 2008-03-28 2009-10-22 Railway Technical Res Inst Rail joint gap measuring apparatus and gap measuring apparatus
JP2016179520A (en) * 2015-03-24 2016-10-13 株式会社ディスコ Exchange method for cutting blade

Also Published As

Publication number Publication date
JPH07104122B2 (en) 1995-11-13

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