JP2995383B2 - Probe for thickness gauge - Google Patents
Probe for thickness gaugeInfo
- Publication number
- JP2995383B2 JP2995383B2 JP6317803A JP31780394A JP2995383B2 JP 2995383 B2 JP2995383 B2 JP 2995383B2 JP 6317803 A JP6317803 A JP 6317803A JP 31780394 A JP31780394 A JP 31780394A JP 2995383 B2 JP2995383 B2 JP 2995383B2
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- magnetic core
- outer cylinder
- probe
- holder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼構造物や金属製品の
表面に形成した塗装膜や樹脂膜等の皮膜の厚さを計測す
る膜厚計のプローブに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a probe for a film thickness meter for measuring the thickness of a coating film or a resin film formed on the surface of a steel structure or a metal product.
【０００２】[0002]
【従来の技術】道路橋、鉄道橋、歩道橋等の公共鋼構造
物、洗濯機、冷蔵庫等の民生機器は、母材である金属の
腐食を防止し、また周辺環境との景観の維持や美観等の
ために表面を各種色彩の塗料によって塗装処理を行って
いる。その他、金属製品によっては表面を樹脂でコーテ
イングして金属面を保護している。BACKGROUND ART Public steel structures such as road bridges, railway bridges, and pedestrian bridges, and consumer appliances such as washing machines and refrigerators prevent corrosion of metal as a base material, maintain a landscape with the surrounding environment, and maintain a beautiful appearance. The surface is painted with paint of various colors for the purpose. In addition, the surface of some metal products is coated with resin to protect the metal surface.
【０００３】これらの塗装膜や樹脂膜等の皮膜は、金属
材を保護するために一定の厚さを有することが必要であ
る。この皮膜の厚さを非破壊の状態で計測するために膜
厚計が提供されている。膜厚計には種々のものがある
が、通常は一極式の二点調整形電磁式膜厚計が使用され
ている。膜厚計の基本原理は、図５に示すように、コイ
ルを巻き回した強磁性金属体（磁心）ａの先端を金属面
ｂに近づけたり離したりすることにより、その距離に応
じてコイルの自己インダクタンスが増減することを利用
したものであり、磁性体ａに巻き回したコイルに表示器
ｃをコードで接続しておくと、インダクタンスの変化を
指示値として読み取り、その数値を表示する。測定条件
が一定になるように、回路およびコイルの定数をあらか
じめ定めておけば、金属面の皮膜の厚さを測定すること
ができる。[0003] It is necessary that these coating films and resin films have a certain thickness in order to protect metal materials. A thickness gauge is provided to measure the thickness of this film in a non-destructive state. There are various types of film thickness gauges, but usually a unipolar two-point adjustable electromagnetic film thickness meter is used. As shown in FIG. 5, the basic principle of the film thickness meter is to move the tip of a ferromagnetic metal body (magnetic core) a around which the coil is wound close to or away from the metal surface b so that the coil is wound in accordance with the distance. This is based on the fact that the self-inductance increases and decreases. If the indicator c is connected to the coil wound around the magnetic body a with a cord, the change in inductance is read as an instruction value and the numerical value is displayed. If the constants of the circuit and the coil are determined in advance so that the measurement conditions are constant, the thickness of the film on the metal surface can be measured.
【０００４】「一極式」の膜厚計は、一個のプローブを
使用するものである。また、「二点調整形」の膜厚計
は、被測定体と同質の金属板を使用して膜厚計の目盛り
を「０点」に調整する。次に、同じ金属板上に非磁性材
料からなる標準厚板を置き、この標準厚板の厚さの数値
を調整する。例えば、標準厚板が２ｍｍの場合には、膜
厚計の数値を２ｍｍに調整すればよい。このようにして
二点調整をした膜厚計のプローブは、その先端の磁心を
塗装膜や樹脂膜等の皮膜の表面に直角に押し当てれば、
金属面と磁心間の膜厚を数値として表示することができ
る。[0004] The "unipolar" film thickness gauge uses one probe. Further, in the “two-point adjustment type” film thickness meter, the scale of the film thickness meter is adjusted to “0 point” using a metal plate of the same quality as the measured object. Next, a standard thick plate made of a non-magnetic material is placed on the same metal plate, and the numerical value of the thickness of the standard thick plate is adjusted. For example, when the standard thick plate is 2 mm, the numerical value of the thickness gauge may be adjusted to 2 mm. In this way, the probe of the film thickness meter that has been adjusted at two points can be pressed at right angles to the surface of the coating, such as a paint film or a resin film, with the magnetic core at the tip thereof,
The film thickness between the metal surface and the magnetic core can be displayed as a numerical value.
【０００５】図６は従来の膜厚計で使用されているプロ
ーブの一例を示すものであり、このプローブＡの要部
は、図７に示すように図示しないコイルを巻き回し可能
な筒状の保持具Ｂ内に強磁性を有する金属棒（磁心）Ｃ
の先端が突出するように挿通し、更に、図８に示すよう
に磁心Ｃを取り付け、コイルＤを巻き回した保持具Ｂは
内筒Ｅ内に入れ、コイルＤは磁心Ｃの後方で端子板を介
してコードＦに接続したものである。このコードＦは、
他端において図示しない膜厚計本体に連結してある。FIG. 6 shows an example of a probe used in a conventional film thickness meter. The main part of the probe A has a cylindrical shape capable of winding a coil (not shown) as shown in FIG. Metal rod (magnetic core) C having ferromagnetism in holder B
8 and a magnetic core C is attached as shown in FIG. 8, and a holder B around which the coil D is wound is placed in the inner cylinder E, and the coil D is connected to the terminal plate behind the magnetic core C. Is connected to the code F via the. This code F is
The other end is connected to a film thickness meter body (not shown).
【０００６】このような要部は図６に示す外筒Ｇ内に収
容し、コードＦの接続部はキャップＨやキャップカバー
Ｉ等で覆う。内筒ＥとキャップＨとはネジ込んで連結す
るとともにキャップＨとキャップカバーＩとはビスＪで
固定してある。また、内筒Ｅと外筒Ｇ間にはスプリング
Ｋが介在してあるので内筒Ｅは外筒Ｇの先端から突出す
る方向性が付与されており、従って、磁心Ｃの先端は外
筒Ｇから突出している。尚、外筒ＧとキャップカバーＩ
とは同径状となっているので、内筒Ｅは外筒Ｇから抜け
出ることはない。Such a main part is accommodated in an outer cylinder G shown in FIG. 6, and the connection part of the cord F is covered with a cap H, a cap cover I or the like. The inner cylinder E and the cap H are connected by screwing, and the cap H and the cap cover I are fixed with screws J. Further, since the spring K is interposed between the inner cylinder E and the outer cylinder G, the inner cylinder E is given a direction to protrude from the tip of the outer cylinder G. Projecting from. In addition, the outer cylinder G and the cap cover I
And the inner cylinder E does not fall out of the outer cylinder G.
【０００７】このようなプローブＡは、磁心Ｃの先端面
を鋼構造物や金属製品等の表面に形成した塗装膜や樹脂
膜等の皮膜面に直角に押し当てれば、磁心Ｃの先端から
発生した磁力線の磁路が鋼構造物や金属製品の接近によ
り変化することによって図示しないコイルのインダクタ
ンスが変化し、皮膜の厚さを測定する。鋼構造物や金属
製品等を通過した磁力線は放射状となって磁心Ｃの後端
側に走行する。尚、図面において磁心Ｃの先端面は平面
となっているが、実際には被測定体と面接触可能なよう
に凸面状となっている。Such a probe A is generated from the tip of the magnetic core C by pressing the tip end of the magnetic core C at right angles to a coating surface such as a coating film or a resin film formed on the surface of a steel structure or a metal product. When the magnetic path of the magnetic field lines changes due to the approach of a steel structure or a metal product, the inductance of a coil (not shown) changes, and the thickness of the film is measured. The lines of magnetic force that have passed through a steel structure, a metal product, or the like become radial and travel toward the rear end of the magnetic core C. Although the tip end surface of the magnetic core C is flat in the drawing, it is actually convex so as to be in surface contact with the measured object.
【０００８】[0008]
【発明が解決しようとする課題】通常、磁心Ｃは強磁性
体で形成されており、磁力線は先端から後方への中空間
において走行性が与えられている。しかし、従来製品の
プローブでは内筒Ｅや外筒Ｇ等は磁性体ではないため、
中空において磁力線が分散し、磁心Ｃの後端側に達する
磁路が定まらない。Normally, the magnetic core C is formed of a ferromagnetic material, and the lines of magnetic force are imparted with running properties in the middle space from the tip to the rear. However, in the conventional probe, the inner tube E and the outer tube G are not magnetic materials.
The lines of magnetic force are dispersed in the hollow, and the magnetic path reaching the rear end of the magnetic core C is not determined.
【０００９】また、金属板の端部における測定や金属板
相互の連設箇所での測定では、金属板の端部側で磁力線
に洩れ現象を生ずることがあり、一部の磁力線のみが磁
心Ｃの後端側に送られることになる。このような磁力線
の分散や洩れ等は膜厚の測定結果に悪影響をあたえ、正
しい測定数値が得られないものであった。本発明は、上
記する従来のプローブに鑑み、少なくとも外筒を強磁性
体で形成することにより磁心の周囲において磁力線を一
定方向に収束させ、正確な膜厚測定を行うことのできる
プローブを提供することを目的とするものである。Further, in the measurement at the end of the metal plate or at the place where the metal plates are connected to each other, a leakage phenomenon may occur in the magnetic force lines at the end portion of the metal plate, and only a part of the magnetic force lines C Will be sent to the rear end side. Such dispersion and leakage of the lines of magnetic force have an adverse effect on the measurement results of the film thickness, and correct measurement values cannot be obtained. The present invention has been made in view of the above-described conventional probe, and provides a probe capable of performing accurate film thickness measurement by converging lines of magnetic force in a certain direction around a magnetic core by forming at least an outer cylinder of a ferromagnetic material. The purpose is to do so.
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、金属表面の塗装膜や樹脂膜等の皮膜の厚
さを測定する膜厚計において、先端部を肉厚、大径と
し、両端部を開口した外筒２と、コイルを巻き付け可能
な保持具３内に磁心４を挿通して磁心４の先端を保持具
３から突出させた状態で保持具３を内筒５内に嵌め入
れ、磁心５の基部を固定した連結具７の前後に内筒５お
よび内筒６を連結した要部機構とからなり、一体化した
要部機構は外筒２内に嵌め入れ、面一状とした外筒２と
内筒５とから磁心４を突出させて外筒２と内筒５および
内筒６とをスライド可能とするとともに少なくとも外筒
２、磁心４、内筒５および連結具７を強磁性金属体で形
成してある。According to the present invention, there is provided a film thickness meter for measuring the thickness of a coating film such as a coating film or a resin film on a metal surface. The holder 3 is inserted into the inner cylinder 5 in a state where the core 4 is inserted into the holder 2 having a diameter and both ends opened and the core 4 is inserted into the holder 3 around which the coil can be wound, and the tip of the core 4 projects from the holder 3. And a main mechanism in which the inner cylinder 5 and the inner cylinder 6 are connected before and after the connecting tool 7 in which the base of the magnetic core 5 is fixed. The integrated main mechanism is fitted in the outer cylinder 2, The magnetic core 4 is projected from the flush outer cylinder 2 and the inner cylinder 5 so that the outer cylinder 2, the inner cylinder 5 and the inner cylinder 6 can slide, and at least the outer cylinder 2, the magnetic core 4, the inner cylinder 5 and The connecting member 7 is formed of a ferromagnetic metal body.
【００１１】[0011]
【実施例】以下、図面に従って本発明の一実施例を詳細
に説明する。図１、図２は、膜厚計に使用する本発明プ
ローブの全体を示すものであり、このプローブ１は、先
端部を肉厚、大径とし、両端部を開口した筒状の外筒２
と、図３に示すように、コイルを巻き付け可能な保持具
３と、この保持具３内に挿通可能な金属棒（磁心）４
と、前後の内筒５、６と、磁心４の基部を固定するとと
もに前後の内筒５、６を連結する連結具７から構成する
要部機構とから成っている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 show the entirety of a probe of the present invention used for a film thickness meter. This probe 1 has a cylindrical outer tube 2 having a tip portion having a large thickness and a large diameter and opening at both ends.
3, a holder 3 around which a coil can be wound, and a metal rod (magnetic core) 4 that can be inserted into the holder 3.
And a main mechanism comprising a connecting member 7 for fixing the base of the magnetic core 4 and connecting the front and rear inner cylinders 5 and 6 with each other.
【００１２】磁心４は保持具３内に挿通し、磁心４の先
端を保持具３から突出させた状態で保持具３を内筒５内
に嵌め入れ、この内筒５と、磁心４の基部をネジ込んで
固定した連結具７とをネジ込み固定する。従って、保持
具３と磁心４とは内筒５と連結具７との間に収容される
ことになる。The magnetic core 4 is inserted into the holder 3, and the holder 3 is fitted into the inner cylinder 5 with the tip of the magnetic core 4 protruding from the holder 3. Is screwed in and fixed to the connecting tool 7. Therefore, the holder 3 and the magnetic core 4 are accommodated between the inner cylinder 5 and the connecting member 7.
【００１３】このようにして内筒５と連結具７とを固定
すると、保持具３は内筒５先端のフランジ５ａに突き当
たって抜け出ることがなく、磁心４の先端は内筒５から
突出した状態となる。連結具７は、中央のフランジ７ａ
を中心にして両側にネジが形成してあるので、内筒５と
は反対側において連結具７には他の内筒６をネジ込んで
固定する。このようにして一体化された要部機構は、図
４に示すように外筒２内に嵌め入れられる。When the inner cylinder 5 and the connecting member 7 are fixed in this way, the holder 3 does not come off by abutting against the flange 5a at the tip of the inner cylinder 5, and the tip of the magnetic core 4 projects from the inner cylinder 5. Becomes The connecting tool 7 has a central flange 7a.
Are screwed on both sides with the center as the center, so that the other inner cylinder 6 is screwed into the connector 7 on the side opposite to the inner cylinder 5 and fixed. The main mechanism thus integrated is fitted into the outer cylinder 2 as shown in FIG.
【００１４】内筒６は、図３に示すように、前後の径を
異にする筒状体であり、外筒２から突出する内筒６の小
径部後端にはキャップ８を嵌め込み、内筒６とキャップ
８とをビス９を使用して固定する。そして、外筒２と内
筒６の小径部との間に形成される環状空間内にスプリン
グ１０を介在させることにより、内筒５および内筒６に
は外筒２の先端方向への押圧習性が与えられ、常態では
内筒５と外筒２との先端面は面一状となって磁心４が突
出する。従って、磁心４を塗装膜や樹脂膜等の皮膜に直
角に当てた時、内筒５や内筒６等はスプリング１０の伸
張力に抗して外筒２内に引っ込むことができるようにな
っている。As shown in FIG. 3, the inner cylinder 6 is a cylindrical body having different diameters in the front and rear directions. A cap 8 is fitted into the rear end of the small diameter portion of the inner cylinder 6 protruding from the outer cylinder 2 and The cylinder 6 and the cap 8 are fixed using screws 9. The spring 10 is interposed in the annular space formed between the outer cylinder 2 and the small diameter portion of the inner cylinder 6, so that the inner cylinder 5 and the inner cylinder 6 have a pressing behavior toward the distal end of the outer cylinder 2. In a normal state, the tip surfaces of the inner cylinder 5 and the outer cylinder 2 are flush with each other, and the magnetic core 4 protrudes. Therefore, when the magnetic core 4 is applied at right angles to a film such as a coating film or a resin film, the inner cylinder 5 and the inner cylinder 6 can be retracted into the outer cylinder 2 against the extension force of the spring 10. ing.
【００１５】保持具３に巻き付けたコイル１１は、連結
具７に形成した孔７ｂを通して内筒６内に導かれ、内筒
６内において図示しないコードに接続し、コードの他端
は膜厚計本体に連結してある。The coil 11 wound around the holder 3 is guided into the inner cylinder 6 through a hole 7b formed in the connecting member 7, and is connected to a cord (not shown) in the inner cylinder 6, and the other end of the cord is connected to a thickness gauge. It is connected to the main body.
【００１６】上記のような構成は、従来の膜厚計用プロ
ーブと大きく異なることはないが、本発明においては、
外筒２の先端部は、磁心４の長さ範囲内で肉厚、大径と
するとともに少なくとも外筒２、磁心４、内筒５および
連結具７等を、例えば、フェライト系ステンレス等の材
質からなる強磁性金属体で形成したことを特徴としてい
る。Although the above configuration does not greatly differ from the conventional thickness gauge probe, in the present invention,
The distal end of the outer cylinder 2 has a wall thickness and a large diameter within the length range of the magnetic core 4 and at least the outer cylinder 2, the magnetic core 4, the inner cylinder 5, and the connecting member 7 are made of a material such as ferritic stainless steel. It is characterized by being formed of a ferromagnetic metal body composed of:
【００１７】上記するプローブ１は、従来の膜厚計と同
じようにして磁心４の先端を塗装膜や樹脂膜等の皮膜面
に直角に当てがい、膜厚測定を行うものであるが、外筒
２、連結具７および内筒５等を強磁性の金属体で形成し
たことにより、磁心４の先端で発生した磁力線は強磁性
金属体によって磁心４の後端側への方向性および磁束性
が与えられることになる。特に、外筒６の先端部を肉
厚、大径としておけば、磁心４で発生した磁力線は周辺
に拡散することなくこの肉厚部内を通って方向性および
磁束性が与えられることになる。The probe 1 described above measures the film thickness by applying the tip of the magnetic core 4 at right angles to the coating surface such as a coating film or a resin film in the same manner as a conventional film thickness meter. Since the cylinder 2, the coupling 7, the inner cylinder 5, and the like are formed of a ferromagnetic metal body, the lines of magnetic force generated at the front end of the magnetic core 4 are directed by the ferromagnetic metal body to the direction and the magnetic flux toward the rear end of the core 4. Will be given. In particular, if the distal end of the outer cylinder 6 is made thick and has a large diameter, the lines of magnetic force generated by the magnetic core 4 pass through the thick part without being diffused to the periphery and are given directionality and magnetic flux.
【００１８】また、磁心４の先端内にルビー、鋼玉、ダ
イヤモンド等からなる超硬材を一体的に嵌め込み、磁心
４の先端面を凸面状としておけば超硬材２は塗装膜や樹
脂膜等の皮膜面に、直接、接触することになり、磁心の
磨耗を防ぐことができる。A super hard material made of ruby, steel ball, diamond, or the like is integrally fitted into the tip of the magnetic core 4 so that the tip surface of the magnetic core 4 is formed in a convex shape, so that the super hard material 2 can be a coating film, a resin film, or the like. Directly contacting the film surface of the magnetic core, thereby preventing abrasion of the magnetic core.
【００１９】[0019]
【発明の効果】本発明は上記の通り、外筒２、磁心４、
内筒５および連結具７等を強磁性金属体で形成したこと
により、磁心４の先端から発生した磁力線は外筒２、内
筒５および連結具７を介して磁心４の後端方向へ収束し
て案内されるので、磁力線が分散して乱れを生じたり金
属板端面において磁力線の洩れ現象を生ずることがな
く、膜厚測定は常に正確に行うことができる。According to the present invention, as described above, the outer cylinder 2, the magnetic core 4,
Since the inner cylinder 5 and the connecting member 7 are formed of a ferromagnetic metal body, the lines of magnetic force generated from the front end of the magnetic core 4 converge toward the rear end of the magnetic core 4 via the outer cylinder 2, the inner cylinder 5 and the connecting member 7. Therefore, the film thickness measurement can always be accurately performed without dispersing and disturbing the lines of magnetic force or causing a phenomenon of leakage of the lines of magnetic force on the end face of the metal plate.
【００２０】特に、磁心４を皮膜に当てがった時、磁心
４と内筒５および内筒６とともに外筒２の内側にスライ
ドして引き込むので、外筒６の先端面が皮膜に当接する
ことになり、強磁性体で形成した外筒２の先端部を肉
厚、大径としたことにより磁力線は周辺に拡散すること
なく大径部を通ることになり、その収束はより安定した
ものとなり、測定結果は良好なものである。更に、磁心
４の先端内に超硬材を埋め込み、皮膜面に当てることに
より、磁心４の磨耗を防ぎ、長期間安定して使用可能と
なる。In particular, when the magnetic core 4 is applied to the film, the core 4 slides into the outer tube 2 together with the inner tube 5 and the inner tube 6, so that the tip surface of the outer tube 6 comes into contact with the film. In other words, by making the tip of the outer cylinder 2 made of a ferromagnetic material thick and having a large diameter, the lines of magnetic force pass through the large diameter portion without diffusing to the periphery, and the convergence is more stable. And the measurement result is good. Further, by embedding a cemented carbide material in the tip of the magnetic core 4 and applying it to the coating surface, wear of the magnetic core 4 is prevented, and the core 4 can be used stably for a long time.
【図１】本発明プローブ全体の正面図である。FIG. 1 is a front view of the entire probe of the present invention.
【図２】本発明プローブ全体の平面図である。FIG. 2 is a plan view of the entire probe of the present invention.
【図３】本発明プローブに使用する要部機構の分解斜視
図である。FIG. 3 is an exploded perspective view of a main part mechanism used in the probe of the present invention.
【図４】本発明プローブの内部機構を省略した中央縦断
面図である。FIG. 4 is a central longitudinal sectional view of the probe of the present invention, from which an internal mechanism is omitted.
【図５】電磁式膜厚計の原理を示す説明図である。FIG. 5 is an explanatory view showing the principle of an electromagnetic film thickness meter.
【図６】従来のプローブの一例を示す断面図である。FIG. 6 is a sectional view showing an example of a conventional probe.
【図７】従来のプローブに使用する保持具と磁心の分解
斜視図である。FIG. 7 is an exploded perspective view of a holder and a magnetic core used for a conventional probe.
【図８】従来のプローブに使用する内筒と磁心を取り付
けた保持具との分解斜視図である。FIG. 8 is an exploded perspective view of an inner cylinder used for a conventional probe and a holder to which a magnetic core is attached.
１ プローブ ２ 外筒 ３ 保持具 ４ 磁心 ５ 内筒 ６ 内筒 ７ 連結具 ８ キャップ ９ ビス １０ スプリング １１ コイル ａ 磁心 ｂ 金属面 ｃ 表示器 Ａ プローブ Ｂ 保持具 Ｃ 磁心 Ｄ コイル Ｅ 内筒 Ｆ コード Ｇ 外筒 Ｈ キャップ Ｉ キャップカバー Ｊ ビス Ｋ スプリング DESCRIPTION OF SYMBOLS 1 Probe 2 Outer cylinder 3 Holder 4 Magnetic core 5 Inner cylinder 6 Inner cylinder 7 Connector 8 Cap 9 Screw 10 Spring 11 Coil a Magnetic core b Metal surface c Display A Probe B Holder C Magnetic core D Coil E Inner cylinder F code G Outer cylinder H Cap I Cap cover J Screw K Spring
Claims (1)
さを測定する膜厚計において、先端部を肉厚、大径と
し、両端部を開口した外筒２と、コイルを巻き付け可能
な保持具３内に磁心４を挿通して磁心４の先端を保持具
３から突出させた状態で保持具３を内筒５内に嵌め入
れ、磁心４の基部を固定した連結具７の前後に内筒５お
よび内筒６を連結した要部機構とからなり、一体化した
要部機構は外筒２内に嵌め入れ、面一状とした外筒２と
内筒５とから磁心４を突出させて外筒２と内筒５および
内筒６とをスライド可能とするとともに少なくとも外筒
２、磁心４、内筒５および連結具７を強磁性金属体で形
成したことを特徴とする膜厚計用プローブ。1. A film thickness meter for measuring the thickness of a coating film, a resin film, or the like on a metal surface, wherein a coil is wound around an outer cylinder 2 having a thicker end and a larger diameter at both ends and an opening at both ends. The holder 3 is inserted into the inner cylinder 5 in a state where the magnetic core 4 is inserted into the possible holder 3 and the tip of the core 4 is projected from the holder 3, and the connecting member 7 in which the base of the core 4 is fixed is fixed. A main mechanism is formed by connecting the inner cylinder 5 and the inner cylinder 6 in the front and rear directions. The integrated main mechanism is fitted into the outer cylinder 2 and the magnetic core 4 is formed by the flush outer cylinder 2 and the inner cylinder 5. To make the outer cylinder 2, the inner cylinder 5, and the inner cylinder 6 slidable, and at least the outer cylinder 2, the magnetic core 4, the inner cylinder 5, and the connecting member 7 are formed of a ferromagnetic metal body. Probe for thickness gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6317803A JP2995383B2 (en) | 1994-11-29 | 1994-11-29 | Probe for thickness gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6317803A JP2995383B2 (en) | 1994-11-29 | 1994-11-29 | Probe for thickness gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08152303A JPH08152303A (en) | 1996-06-11 |
| JP2995383B2 true JP2995383B2 (en) | 1999-12-27 |
Family
ID=18092221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6317803A Expired - Fee Related JP2995383B2 (en) | 1994-11-29 | 1994-11-29 | Probe for thickness gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2995383B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671408B (en) * | 2017-03-11 | 2023-02-28 | 河南理工大学 | Flexible 3D biological printing coaxial nozzle and manufacturing and using method thereof |
| JP6497406B2 (en) * | 2017-03-27 | 2019-04-10 | 中国電力株式会社 | Measuring jig for film thickness meter |
| JP6497413B2 (en) * | 2017-06-12 | 2019-04-10 | 中国電力株式会社 | Measuring jig for film thickness meter |
-
1994
- 1994-11-29 JP JP6317803A patent/JP2995383B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08152303A (en) | 1996-06-11 |
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