JP2006145394A - Tensile strength measuring method and tensile strength measuring instrument - Google Patents

Tensile strength measuring method and tensile strength measuring instrument Download PDF

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JP2006145394A
JP2006145394A JP2004336194A JP2004336194A JP2006145394A JP 2006145394 A JP2006145394 A JP 2006145394A JP 2004336194 A JP2004336194 A JP 2004336194A JP 2004336194 A JP2004336194 A JP 2004336194A JP 2006145394 A JP2006145394 A JP 2006145394A
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measured
tensile strength
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Iwao Ozaki
巌 尾崎
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tensile strength measuring method, capable of measuring tensile strength stably without being affected by the shape of a measuring target despite inexpensive and simple structure, and to provide the structure of a tensile strength measuring instrument that realizes the tensile strength measuring method. <P>SOLUTION: The instrument 10 is equipped with a pulling means 11 for pulling the measuring target 15 in a substantially definite direction, a force-measuring means 13 for measuring the tension applied to the measuring target 15 and a movable mechanism 12 capable of freely moving one of or both of grasping parts, which are provided at least at two places to apply tensile force to the measuring target 15, in a direction substantially orthogonal to direction of the pulling means 11 almost at right angles. The measuring target 15 is pulled to measure the tensile strength and the movement of the grasping part due to the movable mechanism 12 is measured to detect the shape abnormality of the measuring target 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、接合強度又は接続強度の評価等に利用される引張強度を測定する、方法及び装置に関する。詳しくは、引張強度測定方法及び引張強度測定装置に関して、被測定物の形状に左右されることなく、安定して精度の高い引張強度を測定することを可能とするための技術に関する。   The present invention relates to a method and an apparatus for measuring tensile strength used for evaluation of bonding strength or connection strength. More specifically, the present invention relates to a technique for enabling a tensile strength to be measured stably and accurately without being influenced by the shape of an object to be measured, with respect to a tensile strength measuring method and a tensile strength measuring device.

従来、接合強度又は接続強度を評価するために引張強度の値を良・不良の判断基準として採用することがあり、被評価物の引張強度の測定が引張強度測定装置にて行われる。
一般に、引張強度測定装置には、被測定物の一側を把持する把持具を備えた力測定手段と、被測定物の他側を固定する固定具と、被測定物を略一定方向に引っ張る引張手段とが備えられる。
そして、引張強度測定においては、被測定物が破損（剥離）するか、又は、張力（引張力）が所定の力に達するまで、被測定物が一定方向に引き離される。各瞬間において、被測定物に加わる張力が力測定手段によって測定されるとともに、被測定物が破損するときに被測定物に加わる張力が引張強度として記録される。 Conventionally, in order to evaluate the bonding strength or connection strength, the value of tensile strength is sometimes adopted as a criterion for determining good / bad, and the tensile strength of an object to be evaluated is measured by a tensile strength measuring device.
In general, the tensile strength measuring device includes a force measuring means having a gripping tool for gripping one side of the object to be measured, a fixture for fixing the other side of the object to be measured, and pulling the object to be measured in a substantially constant direction. Tensioning means.
In the tensile strength measurement, the measured object is pulled away in a certain direction until the measured object is broken (peeled) or the tension (tensile force) reaches a predetermined force. At each moment, the tension applied to the object to be measured is measured by the force measuring means, and the tension applied to the object to be measured when the object to be measured is broken is recorded as the tensile strength.

上述の引張強度測定装置において、被測定物が引き離される方向が、張力ベクトルの方向となる。しかし、被測定物の形状によっては、引張手段により被測定物が引っ張られることにより発生する張力ベクトルの方向から、外れた方向に力成分が発生することがある。例えば、図５に示すように、測定手段にて把持された被測定物の二の把持部を結ぶ直線上に、接合部が配置されないような場合である。このような場合、力測定手段にて測定された値によって決定される引張強度と、被測定物が実際持つ引張強度とが大きく異なることがあり、良品が不良品として評価されてしまうという不具合が生じる。   In the tensile strength measuring apparatus described above, the direction in which the object to be measured is separated is the direction of the tension vector. However, depending on the shape of the object to be measured, a force component may be generated in a direction deviating from the direction of the tension vector generated when the object to be measured is pulled by the pulling means. For example, as shown in FIG. 5, there is a case where the joining portion is not arranged on a straight line connecting two gripping portions of the object to be measured gripped by the measuring means. In such a case, the tensile strength determined by the value measured by the force measuring means and the tensile strength actually possessed by the object to be measured may be greatly different, so that a non-defective product is evaluated as a defective product. Arise.

上記不具合を解消するために、例えば、特許文献１では、引張試験を実施するための装置であって、引張方向と略直交する方向に引張手段の位置調整を可能とすることによって、測定される引張強度の精度を高める技術が公開されている。
この技術は、基板へのボンディングワイヤの接合強度を測定するための装置において、ボンディングワイヤのワイヤループの最高点をカメラで捉えた映像にて検出し、常に、把持具がボンディングワイヤのワイヤループの最高点を把持するように、基板を保持固定している台の位置を自動制御させる機構を備えたものである。これにより、把持具にて常にボンディングワイヤのワイヤループの最高点を把持して測定が行われ、張力のばらつきの低減が図られている。
特開２００４−３７４４４号公報 In order to eliminate the above-mentioned problem, for example, in Patent Document 1, it is an apparatus for carrying out a tensile test, and is measured by enabling the position adjustment of the tension means in a direction substantially orthogonal to the tension direction. Technologies that increase the accuracy of tensile strength have been released.
This technology is a device for measuring the bonding strength of a bonding wire to a substrate, and detects the highest point of the wire loop of the bonding wire with an image captured by a camera. A mechanism for automatically controlling the position of the table holding and fixing the substrate so as to hold the highest point is provided. As a result, the measurement is performed by always grasping the highest point of the wire loop of the bonding wire with the grasping tool, and the variation in tension is reduced.
JP 2004-37444 A

上記特許文献１に記載の技術では、位置を検出し、これに合わせるために台を駆動制御している。従って、制御が複雑となったり、駆動装置を備えたりすることになり、装置が高価なものとなってしまう。
そこで、本発明では、安価且つ単純な構造でありながら、被測定物の形状に左右させることなく、安定して引張強度の測定を行うことのできる引張強度測定方法及びこれを実現する引張強度測定装置の構造について提案する。
また、引張強度の測定のみではなく、溶接位置や溶接形状等の接合異常を検出することもできる、引張強度測定方法及びこれを実現する引張強度測定装置の構造について提案する。 In the technique described in Patent Document 1, the position is detected, and the table is driven and controlled to match the position. Therefore, the control becomes complicated or a drive device is provided, and the device becomes expensive.
Therefore, in the present invention, a tensile strength measurement method capable of stably measuring the tensile strength without affecting the shape of the object to be measured, and a tensile strength measurement that realizes the tensile strength measurement method, while having an inexpensive and simple structure. The structure of the device is proposed.
In addition to the measurement of tensile strength, we propose a tensile strength measurement method and a structure of a tensile strength measurement device that realizes this, which can detect welding abnormalities such as welding positions and weld shapes.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。   The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

即ち、請求項１においては、被測定物を少なくとも二カ所で把持して引張力を与え引張強度を測定する方法であって、被測定物の一又は複数の把持部を引張方向に対して略直交する方向に自在に移動可能とした状態で、被測定物を引っ張り、引張強度を測定するものである。   That is, according to the first aspect of the present invention, the tensile strength is measured by gripping the object to be measured in at least two places, and one or a plurality of gripping portions of the object to be measured are approximately in the tensile direction. The object to be measured is pulled and the tensile strength is measured in a state where it can be freely moved in the orthogonal direction.

請求項２においては、前記被測定物の把持部の移動を測定し、測定された被測定物の把持部の移動に応じて被測定物の良・不良を判定するものである。   According to a second aspect of the present invention, the movement of the gripping part of the object to be measured is measured, and the quality of the object to be measured is determined according to the measured movement of the gripping part of the object to be measured.

請求項３においては、被測定物を少なくとも二カ所で把持して引張力を与え引張強度を測定する装置であって、被測定物の一の把持部を固定する固定手段と、被測定物の他の把持部を略一定方向に引っ張る引張手段と、被測定物にかかる張力を測定する力測定手段と、被測定物の一又は複数の把持部を、引張手段による引張方向と略直交する方向に自在に移動可能とする可動機構とを、備えて成るものである。   According to a third aspect of the present invention, there is provided an apparatus for measuring a tensile strength by holding a measured object at at least two places and applying a tensile force, and a fixing means for fixing one gripped part of the measured object, A tension means that pulls another gripping part in a substantially constant direction, a force measurement means that measures the tension applied to the object to be measured, and a direction in which one or more gripping parts of the object to be measured are substantially orthogonal to the pulling direction by the tensioning means And a movable mechanism that can be freely moved.

請求項４においては、前記可動機構を、互いに直交するように配置した二組のリニアガイドで構成するものである。   According to a fourth aspect of the present invention, the movable mechanism is constituted by two sets of linear guides arranged so as to be orthogonal to each other.

請求項５においては、前記可動機構による把持部の移動を計測する手段を設けるものである。   According to a fifth aspect of the present invention, there is provided means for measuring the movement of the grip portion by the movable mechanism.

請求項６においては、前記把持部の移動に関して、良・不良の範囲を設定し、座標の移動を計測する手段にて計測した把持部の移動が良・不良のいずれの範囲に属するかを判断して、被測定物の形状異常を検出するものである。   In claim 6, regarding the movement of the gripping part, a range of good / bad is set, and it is determined whether the movement of the gripping part measured by means for measuring the movement of the coordinates belongs to the good / bad range. Thus, the shape abnormality of the object to be measured is detected.

本発明の効果として、以下に示すような効果を奏する。   As effects of the present invention, the following effects can be obtained.

請求項１においては、被測定物の接合部（又は接続部）そのものの強度をより精度良く測定でき、計測される引張強度のばらつきを低減させることができ、測定精度を高めることができる   In Claim 1, the intensity | strength of the junction part (or connection part) itself of a to-be-measured object can be measured more accurately, the dispersion | variation in the measured tensile strength can be reduced, and a measurement precision can be improved.

請求項２においては、被測定物の引張強度のみならず、形状異常を検出することで、被測定物の良・不良の判断を精度良くすることができる。   According to the second aspect, by detecting not only the tensile strength of the object to be measured but also the shape abnormality, it is possible to accurately determine whether the object to be measured is good or bad.

請求項３においては、被測定物の接合部（又は接続部）そのものの強度をより精度良く測定でき、計測される引張強度のばらつきを低減させることができ、測定精度を高めることができる。   According to the third aspect of the present invention, it is possible to measure the strength of the joint portion (or connection portion) itself of the object to be measured with higher accuracy, reduce variation in measured tensile strength, and increase measurement accuracy.

請求項４においては、可動機構は、特別な動力や制御を要しないので、安価且つ簡易に構成することができる。   According to the fourth aspect of the present invention, since the movable mechanism does not require special power or control, it can be configured inexpensively and easily.

請求項５においては、把持部の移動を、被測定物の良・不良の判断材料とすることができる。   According to the fifth aspect of the present invention, the movement of the gripping part can be used as a material for determining whether the object to be measured is good or bad.

請求項６においては、被測定物の引張強度のみならず、形状異常を検出することで、被測定物の良・不良の判断を精度良くすることができる。   According to the sixth aspect, by detecting not only the tensile strength of the object to be measured but also the shape abnormality, it is possible to accurately determine whether the object to be measured is good or bad.

次に、発明の実施の形態を説明する。
図１は本発明の実施例に係る引張強度測定装置の構成を示すブロック図、図２は引張強度測定装置の斜視図、図３はばらつき低減効果の一例を示す図表である。図４は接合異常を検出するための良・不良範囲の設定例を示す図表である。
図５は引張強度測定装置にセットされた状態の被測定物の様子を示す図、図６は引張強度を計測している状態の被測定物の様子を示す図である。 Next, embodiments of the invention will be described.
FIG. 1 is a block diagram showing a configuration of a tensile strength measuring device according to an embodiment of the present invention, FIG. 2 is a perspective view of the tensile strength measuring device, and FIG. 3 is a chart showing an example of a variation reducing effect. FIG. 4 is a chart showing an example of setting the good / bad range for detecting a bonding abnormality.
FIG. 5 is a view showing the state of the object to be measured set in the tensile strength measuring device, and FIG. 6 is a view showing the state of the object to be measured in a state where the tensile strength is being measured.

図１に示す如く、本発明の実施例に係る引張強度測定装置１０は、被測定物１５を引っ張る引張手段１１と、被測定物１５に加わる張力を測定する力測定手段１３と、引張手段１１と力測定手段１３との間に設けられた可動機構１２と、被測定物１５を固定するための測定台１４と、座標計測部１８ａや表示部１８ｂを備えた制御装置１８等、から成る。   As shown in FIG. 1, a tensile strength measuring apparatus 10 according to an embodiment of the present invention includes a tension means 11 that pulls a measurement object 15, a force measurement means 13 that measures a tension applied to the measurement object 15, and a tension means 11. And the force measuring means 13, a movable mechanism 12, a measuring table 14 for fixing the object 15 to be measured, a control device 18 having a coordinate measuring unit 18a and a display unit 18b, and the like.

そして、被測定物１５は、その一側が、測定台１４に固定された保持具１６に把持固定され、その他側が、力測定手段１３の下部から延出された測定ロッド２６の端部に備えられた把持具１７に把持固定される。すなわち、引張手段１１による引っ張り力が加えられる被測定物１５の二カ所の把持部は、一方が把持具１７に把持固定された部分であり、他方は、保持具１６にて把持固定された部分となる。   The measured object 15 is gripped and fixed on one side by a holder 16 fixed to the measuring table 14, and the other side is provided on the end of the measuring rod 26 extending from the lower part of the force measuring means 13. The holding tool 17 is held and fixed. That is, two gripping portions of the object to be measured 15 to which the pulling force by the pulling means 11 is applied are portions where one is gripped and fixed to the gripping tool 17 and the other is a portion gripped and fixed by the holding tool 16. It becomes.

なお、本実施例においては、引張強度測定装置１０にて被測定物１５を略垂直方向に引っ張って引張強度を測定する。但し、被測定物１５を略水平方向に引っ張って引張強度を測定する構成としたり、引張強度測定装置１０にて被測定物１５を二カ所以上の複数箇所で把持して略垂直方向と略水平方向との両方向に引っ張って引張強度を測定する構成としたりすることもできる。   In this embodiment, the tensile strength is measured by pulling the object 15 to be measured in a substantially vertical direction by the tensile strength measuring device 10. However, the tensile strength is measured by pulling the measurement object 15 in a substantially horizontal direction, or the measurement object 15 is gripped at two or more locations by the tensile strength measurement device 10 and is substantially horizontal and horizontal. The tensile strength can be measured by pulling in both directions.

また、本実施例において、説明のために、略垂直（上下）方向をＺ方向とし、Ｚ方向に略直交する略水平方向（図１の紙面左右方向）をＸ方向とし、Ｘ方向に略直交する略水平方向（図１の紙面前後方向）をＹ方向とする。   Further, in this embodiment, for the sake of explanation, the substantially vertical (up and down) direction is defined as the Z direction, the substantially horizontal direction (left and right direction in FIG. 1) substantially orthogonal to the Z direction is defined as the X direction, and substantially orthogonal to the X direction. The substantially horizontal direction (the front-rear direction in FIG. 1) is defined as the Y direction.

引張手段１１は、油圧式、電動式、又は、手動式であって、Ｚ方向に把持具１７を移動させることのできる手段である。本実施例では、引張手段１１は油圧式のシリンダであって、制御装置１８の制御を受けてシリンダに備えられたロッド１１ａが伸縮することにより、把持具１７が上下方向に移動される。
引張手段１１にて把持具１７を移動させることにより、保持具１６と把持具１７とに両端を固定された被測定物１５がＺ方向に引っ張られ、又は、圧縮されることになる。 The pulling means 11 is a hydraulic type, an electric type, or a manual type, and can move the gripping tool 17 in the Z direction. In the present embodiment, the pulling means 11 is a hydraulic cylinder, and the gripping tool 17 is moved in the vertical direction when the rod 11 a provided in the cylinder expands and contracts under the control of the control device 18.
By moving the gripping tool 17 by the pulling means 11, the measured object 15 having both ends fixed to the holding tool 16 and the gripping tool 17 is pulled or compressed in the Z direction.

可動機構１２は、把持具１７を、引張手段１１による引張り方向（Ｚ方向）と略直交する方向（Ｘ−Ｙ方向）に自在に移動可能とするための手段である。
本実施例では、図２にも示す如く、略直交方向に配置された二組のリニアガイド（Ｘ方向リニアガイド２０ｘ・Ｙ方向リニアガイド２０ｙ）にて可動機構１２が構成される。 The movable mechanism 12 is a means for allowing the gripping tool 17 to freely move in a direction (XY direction) substantially orthogonal to a pulling direction (Z direction) by the pulling means 11.
In this embodiment, as shown in FIG. 2, the movable mechanism 12 is configured by two sets of linear guides (X-direction linear guide 20x and Y-direction linear guide 20y) arranged in a substantially orthogonal direction.

Ｘ方向リニアガイド２０ｘは、Ｘ方向に延在するＸ方向レール２１と、該Ｘ方向レール２１に摺動自在に嵌合されたＸ方向ブロック２２とで構成される。Ｘ方向レール２１は、引張手段１１に備えられたロッド１１ａの下部に連結固定される。
Ｘ方向レール２１上を、Ｘ方向ブロック２２は自在に摺動することが可能であり、摺動摩擦を低減するためにベアリング等の摩擦低減機構（図示せず）が備えられ、Ｘ方向ブロック２２は比較的小さな荷重でも容易に移動することができる。 The X-direction linear guide 20x includes an X-direction rail 21 extending in the X direction and an X-direction block 22 slidably fitted to the X-direction rail 21. The X-direction rail 21 is connected and fixed to the lower part of the rod 11 a provided in the tension means 11.
The X-direction block 22 can freely slide on the X-direction rail 21, and a friction reducing mechanism (not shown) such as a bearing is provided to reduce sliding friction. It can be easily moved even with a relatively small load.

Ｙ方向リニアガイド２０ｙは、Ｙ方向に延在するＹ方向レール２３と、該Ｙ方向レール２３に摺動自在に嵌合されたＹ方向ブロック２４とで構成される。Ｙ方向レール２３は、Ｘ方向ブロック２２の下部に連結固定され、また、Ｙ方向ブロック２４の下部には力測定手段１３が連結固定される。
Ｙ方向レール２３上を、Ｙ方向ブロック２４は自在に摺動することが可能であり、摺動摩擦を低減するためにベアリング等の摩擦低減機構（図示せず）が備えられ、Ｙ方向ブロック２４は比較的小さな荷重でも容易に移動することができる。 The Y-direction linear guide 20y includes a Y-direction rail 23 that extends in the Y-direction and a Y-direction block 24 that is slidably fitted to the Y-direction rail 23. The Y direction rail 23 is connected and fixed to the lower part of the X direction block 22, and the force measuring means 13 is connected and fixed to the lower part of the Y direction block 24.
The Y-direction block 24 can freely slide on the Y-direction rail 23, and a friction reducing mechanism (not shown) such as a bearing is provided to reduce sliding friction. It can be easily moved even with a relatively small load.

上記可動機構１２においては、Ｘ方向レール２１上をＸ方向ブロック２２がＸ方向に自在に移動することができ、また、Ｙ方向レール２３上をＹ方向ブロック２４がＹ方向に自在に移動することができるので、把持具１７を備えた力測定手段１３は、引張手段１１に対してＸ−Ｙ方向（Ｘ−Ｙ平面上）に自在に移動することが可能となる。   In the movable mechanism 12, the X-direction block 22 can freely move in the X direction on the X-direction rail 21, and the Y-direction block 24 can freely move in the Y direction on the Y-direction rail 23. Therefore, the force measuring means 13 provided with the gripping tool 17 can freely move in the XY direction (on the XY plane) with respect to the pulling means 11.

そして、可動機構１２には、制御装置１８の座標計測部１８ａが接続され、可動機構１２にて移動した把持具１７側の把持部のＸ−Ｙ座標が測定され、記録される。
保持具１６側の把持部と引張手段１１とを結ぶ直線上に、把持具１７側の把持部が至るときがＸ−Ｙ座標の基準点とされ、座標計測部１８ａではこの基準点からの把持具１７側の把持部の座標の移動（位置変化）が計測され、制御装置１８の表示部１８ｂに表示されるとともに、記録される。
なお、本実施例においては、座標計測部１８ａにて、Ｘ方向ブロック２２のＸ方向レール２１に対する移動距離と、Ｙ方向ブロック２４のＹ方向レール２３に対する移動距離とが計測されることによって、把持具１７側の把持部のＸ−Ｙ座標が決定される。 The coordinate measuring unit 18a of the control device 18 is connected to the movable mechanism 12, and the XY coordinates of the gripping part on the gripping tool 17 side moved by the movable mechanism 12 are measured and recorded.
When the gripping part on the gripping tool 17 side reaches the straight line connecting the gripping part on the holding tool 16 side and the pulling means 11, the reference point of the XY coordinates is set, and the coordinate measuring part 18a grips from this reference point. The movement (position change) of the coordinates of the gripping part on the tool 17 side is measured and displayed and recorded on the display unit 18b of the control device 18.
In the present embodiment, the coordinate measuring unit 18a measures the movement distance of the X-direction block 22 relative to the X-direction rail 21 and the movement distance of the Y-direction block 24 relative to the Y-direction rail 23 to thereby grasp the grip. The XY coordinates of the grip portion on the tool 17 side are determined.

前記力測定手段１３は、例えば、プッシュプルゲージ、フォースゲージ等の引っ張られる力を測定する手段である。
前述の如く、力測定手段１３の上部は、可動機構１２に連結されている。一方、力測定手段１３の下方からは力測定手段１３の構成部材である測定ロッド２６が延出され、該測定ロッド２６の端部に被測定物１５を挟持する把持具１７が備えられる。
力測定手段１３は制御装置１８に接続されており、力測定手段１３にて測定された張力は、表示部１８ｂにて表示され、記録される。 The force measuring means 13 is a means for measuring a pulling force such as a push-pull gauge or a force gauge.
As described above, the upper portion of the force measuring means 13 is connected to the movable mechanism 12. On the other hand, a measuring rod 26 which is a constituent member of the force measuring means 13 is extended from below the force measuring means 13, and a gripping tool 17 for holding the object 15 to be measured is provided at the end of the measuring rod 26.
The force measuring means 13 is connected to the control device 18, and the tension measured by the force measuring means 13 is displayed and recorded on the display unit 18b.

前記把持具１７には、チャック機構が備えられ、被測定物１５の一端を把持したり、開放したりすることができる。但し、被測定物１５の形状によっては、把持具１７の代わりにフック状の係止具を設けることもでき、被測定物１５に応じて適宜変更することが好ましい。前述の如く、被測定物１５と把持具１７との接点が、把持具１７側の把持部となる。
また、前記保持具１６は、例えば、バイス（万力）等の、被測定物１５の一端を固定することのできる部材である。前述の如く、被測定物１５と保持具１６との接点が、保持具１６側の把持部となる。 The gripping tool 17 is provided with a chuck mechanism, and can grip or release one end of the measurement object 15. However, depending on the shape of the object to be measured 15, a hook-shaped locking tool can be provided instead of the gripping tool 17, and it is preferable to change appropriately according to the object to be measured 15. As described above, the contact point between the DUT 15 and the gripping tool 17 becomes the gripping part on the gripping tool 17 side.
The holder 16 is a member that can fix one end of the object to be measured 15 such as a vise (vise). As described above, the contact point between the DUT 15 and the holder 16 serves as a grip portion on the holder 16 side.

上述の構成の引張強度測定装置１０において、以下のようにして、引張強度を計測する。
被測定物１５は、図５にも示す如く、一側端部が保持具１６に保持固定され、他側端部が把持具１７に挟持固定される。この状態において、制御装置１８の制御を受けた引張手段１１にて把持具１７がＺ方向に移動され、被測定物１５が略一定荷重で引っ張られる。 In the tensile strength measuring apparatus 10 having the above-described configuration, the tensile strength is measured as follows.
As shown in FIG. 5, the measured object 15 has one end held and fixed to the holder 16 and the other end held and fixed to the gripping tool 17. In this state, the gripping tool 17 is moved in the Z direction by the pulling means 11 under the control of the control device 18, and the object 15 to be measured is pulled with a substantially constant load.

引張手段１１による被測定物１５の引っ張りは、被測定物１５が剥離（破損）するまで継続される。この間、断続的に力測定手段１３にて張力が計測され、表示部１８ｂにて表示・記録される。但し、力測定手段１３にて計測される張力が予め設定された所定の値となったときまで、引張りを継続する構成とすることもできる。
そして、被測定物１５が剥離したときの、力測定手段１３にて計測された張力と、座標計測部１８ａにて計測された把持具１７側の把持部のＸ−Ｙ座標とが、表示部１８ｂに表示・記録される。このときの張力が、測定された被測定物１５の引張強度とされる。制御装置１８では、この引張強度が、予め設定された値の範囲内にあるか否かが判断され、被測定物１５の良・不良が判断される。 The pulling of the object 15 to be measured by the pulling means 11 is continued until the object 15 is peeled off (damaged). During this time, the tension is intermittently measured by the force measuring means 13 and displayed / recorded on the display unit 18b. However, the tension may be continued until the tension measured by the force measuring means 13 reaches a predetermined value set in advance.
The tension measured by the force measuring means 13 when the object to be measured 15 peels and the XY coordinates of the gripping part on the gripping tool 17 side measured by the coordinate measuring part 18a are displayed on the display unit. 18b is displayed and recorded. The tension at this time is the measured tensile strength of the object 15 to be measured. In the control device 18, it is determined whether or not the tensile strength is within a preset value range, and it is determined whether the device under test 15 is good or bad.

本発明に係る引張強度測定装置１０では、可動機構１２にて把持具１７側の把持部がＸ−Ｙ方向に自在に移動することができる。従って、引張手段１１にて把持具１７側の把持部がＺ方向に移動するうちに、被測定物１５の形状や接合位置等によって、図６に示す如く、把持具１７側の把持部はＸ−Ｙ方向に移動する。   In the tensile strength measuring apparatus 10 according to the present invention, the gripping part on the gripping tool 17 side can be freely moved in the XY direction by the movable mechanism 12. Accordingly, as shown in FIG. 6, the gripping part on the gripping tool 17 side is X-shaped as the gripping part on the gripping tool 17 side moves in the Z direction by the pulling means 11, depending on the shape, joining position, etc. -Move in the Y direction.

このように、保持具１６側の把持部に対して把持具１７側の把持部が相対的に移動することによって、計測する被測定物１５の接合部１５ａ（又は接続部）が、保持具１６側の把持部と把持具１７側の把持部とを結ぶ直線上により近い位置に至ることができる。これにより、引張手段１１により被測定物１５が引っ張られることにより発生する張力ベクトルの方向から外れた方向に発生する力成分や、接合部１５ａ以外で発生する力成分を抑制することができ、より好ましい状態で引張強度を測定することができる。   In this way, when the gripping part on the gripping tool 17 side moves relative to the gripping part on the gripping tool 16 side, the joint 15a (or connection part) of the measurement object 15 to be measured becomes the holder 16. It is possible to reach a position closer to a straight line connecting the grip portion on the side and the grip portion on the gripping tool 17 side. As a result, the force component generated in the direction deviating from the direction of the tension vector generated when the DUT 15 is pulled by the pulling means 11 and the force component generated outside the joint 15a can be suppressed. The tensile strength can be measured in a preferable state.

さらに、この可動機構１２は特別な制御や動力を必要としない。また、構造は複雑ではない。このように、安価な構成で、外れた方向に発生する力成分や接合部以外で発生する力成分による測定値の誤差を低減するという課題の解消を実現している。   Further, the movable mechanism 12 does not require special control or power. Also, the structure is not complicated. In this way, the problem of reducing the error in the measured value due to the force component generated in the direction away from the force component or the force component generated outside the joint is realized with an inexpensive configuration.

図３の図表では、本発明に係る引張強度測定装置１０を実施して得られた結果の一例として、被測定物１５としてバスバーとターミナルとの接合強度を２０サンプル測定した結果が示されている。
可動機構１２を備えない引張強度測定装置で測定した結果は、引張強度の平均値が６２．６Ｎであり、標準偏差は１５．４Ｎであった。一方、可動機構１２を備えた引張強度測定装置１０で測定した結果は、引張強度の平均値が６４．２Ｎであり、標準偏差は８．１Ｎであった。この結果から、平均値には殆ど相違が見られないが、可動機構１２を備えた引張強度測定装置１０では、測定値のばらつきが抑制されていることがわかる。
すなわち、引張強度の測定値が異常に高かったり低かったりすることがなく、接合部自体の強度をより精度良く測定できていることがわかる。 In the chart of FIG. 3, as an example of a result obtained by carrying out the tensile strength measuring device 10 according to the present invention, a result of measuring 20 samples of the bonding strength between the bus bar and the terminal as the object 15 to be measured is shown. .
As a result of measurement with a tensile strength measuring device not including the movable mechanism 12, the average value of the tensile strength was 62.6N, and the standard deviation was 15.4N. On the other hand, as a result of measurement with the tensile strength measuring device 10 provided with the movable mechanism 12, the average value of the tensile strength was 64.2N, and the standard deviation was 8.1N. From this result, it can be seen that although there is almost no difference in the average value, in the tensile strength measuring device 10 provided with the movable mechanism 12, variation in the measured value is suppressed.
That is, it can be seen that the measured value of the tensile strength is not abnormally high or low, and the strength of the joint itself can be measured with higher accuracy.

また、座標計測部１８にて計測された把持具１７側の把持部のＸ−Ｙ座標は、接合異常の検出のために利用される。
接合部の位置ずれ、突き合わせ位置の異常、接合部の形状異常等の、接合異常がある場合は、他の被測定物１５と比較して、引張強度測定時の把持具１７側の把持部のＸ−Ｙ座標に大幅にずれが生じる。
そこで、引張強度測定時の把持具１７側の把持部のＸ−Ｙ座標に関して予め良範囲と不良範囲とを設定し、良範囲に属するか否かで、良・不良の判定を行うことにより、接合異常の検出が可能となる。例えば、図４に示す如く、把持具１７側の把持部のＸ−Ｙ座標に関して予め良範囲と不良範囲とを設定し、良範囲に属するか否かを判断するのである。 Further, the XY coordinates of the gripping part on the gripping tool 17 side measured by the coordinate measuring part 18 are used for detecting a bonding abnormality.
When there is a bonding abnormality such as a misalignment of the bonding part, an abnormality of the butting position, an abnormality of the shape of the bonding part, etc., compared with other objects 15 to be measured, There is a significant shift in the XY coordinates.
Therefore, by setting a good range and a defective range in advance with respect to the XY coordinates of the gripping part on the gripping tool 17 side at the time of measuring the tensile strength, and determining whether it belongs to the good range or not, It is possible to detect a bonding abnormality. For example, as shown in FIG. 4, a good range and a defective range are set in advance with respect to the XY coordinates of the gripping portion on the gripping tool 17 side, and it is determined whether or not they belong to the good range.

上述の如く、本発明に係る引張強度測定装置１０では、引張強度と、把持部のＸ−Ｙ座標とのそれぞれに良・不良の基準値を設定し、いずれも良であった場合に、接合が良好であると判定する。
これにより、被測定物１５の接合部１５ａそのものの強度がより精度良く測定できるとともに、接合異常をも検出することができ、より精度の高い引張試験を行うことができる。 As described above, in the tensile strength measuring apparatus 10 according to the present invention, the reference values of good and bad are set for the tensile strength and the XY coordinates of the gripping part, respectively. Is determined to be good.
Thereby, while the intensity | strength of the junction part 15a itself of the to-be-measured object 15 can be measured more accurately, a joining abnormality can also be detected and a more accurate tensile test can be performed.

なお、上記実施例に係る引張強度測定装置１０では、可動機構１２にて被測定物１５の上部を把持する把持具１７側の把持部がＸ−Ｙ方向に自在に移動することができる構成としているが、被測定物１５の下部を保持する保持具１６側の把持部がＸ−Ｙ方向に自在に移動することができる構成としたり、被測定物１５の上部を把持する把持具１７と被測定物１５の下部を保持する保持具１６のそれぞれの把持部がＸ−Ｙ方向に自在に移動することができる構成としたりすることもでき、いずれにおいても上記実施例と同様の効果を得ることができる。   In the tensile strength measuring apparatus 10 according to the above embodiment, the gripping part on the gripping tool 17 side that grips the upper portion of the measurement object 15 by the movable mechanism 12 can freely move in the XY direction. However, the gripping part on the side of the holding tool 16 that holds the lower part of the object 15 to be measured can be moved freely in the XY direction, or the gripping tool 17 that grips the upper part of the object 15 and the object to be measured Each holding part of the holder 16 that holds the lower part of the measurement object 15 can be configured to freely move in the XY directions, and in either case, the same effect as in the above embodiment can be obtained. Can do.

本発明の実施例に係る引張強度測定装置の構成を示すブロック図。The block diagram which shows the structure of the tensile strength measuring apparatus which concerns on the Example of this invention. 引張強度測定装置の斜視図。The perspective view of a tensile strength measuring device. ばらつき低減効果の一例を示す図表。The chart which shows an example of a variation reduction effect. 接合異常を検出するための良・不良範囲の設定例を示す図表。The chart which shows the example of a setting of the good / bad range for detecting a joining abnormality. 引張強度測定装置にセットされた状態の被測定物の様子を示す図。The figure which shows the mode of the to-be-measured object in the state set to the tensile strength measuring apparatus. 引張強度を計測している状態の被測定物の様子を示す図。The figure which shows the mode of the to-be-measured object in the state which is measuring the tensile strength.

符号の説明Explanation of symbols

１０ 引張強度測定装置
１１ 引張手段
１２ 可動機構
１３ 力測定手段
１５ 被測定物
１６ 保持具
１７ 把持具
１８ 制御装置
１８ａ 座標計測部
１８ｂ 表示部
２０ｘ Ｘ方向リニアガイド
２０ｙ Ｙ方向リニアガイド
２１ Ｘ方向レール
２２ Ｘ方向ブロック
２３ Ｙ方向レール
２４ Ｙ方向ブロック DESCRIPTION OF SYMBOLS 10 Tensile strength measuring apparatus 11 Pulling means 12 Movable mechanism 13 Force measuring means 15 Object to be measured 16 Holding tool 17 Holding tool 18 Control device 18a Coordinate measuring unit 18b Display unit 20x X direction linear guide 20y Y direction linear guide 21 X direction rail 22 X direction block 23 Y direction rail 24 Y direction block

Claims (6)

被測定物を少なくとも二カ所で把持して引張力を与え引張強度を測定する方法であって、
被測定物の一又は複数の把持部を引張方向に対して略直交する方向に自在に移動可能とした状態で、被測定物を引っ張り、引張強度を測定する
ことを特徴とする引張強度測定方法。 A method for measuring a tensile strength by holding a measured object in at least two places and applying a tensile force.
A tensile strength measuring method characterized by pulling the measured object and measuring the tensile strength in a state in which one or more gripping portions of the measured object are freely movable in a direction substantially perpendicular to the tensile direction. . 前記被測定物の把持部の移動を測定し、
測定された被測定物の把持部の移動に応じて被測定物の良・不良を判定する、
請求項１に記載の引張強度測定方法。 Measure the movement of the gripping part of the object to be measured,
Determines whether the measured object is good or bad according to the measured movement of the gripping part of the measured object.
The tensile strength measuring method according to claim 1. 被測定物を少なくとも二カ所で把持して引張力を与え引張強度を測定する装置であって、
被測定物の一の把持部を固定する固定手段と、
被測定物の他の把持部を略一定方向に引っ張る引張手段と、
被測定物にかかる張力を測定する力測定手段と、
被測定物の一又は複数の把持部を、引張手段による引張方向と略直交する方向に自在に移動可能とする可動機構とを、
備えて成ることを特徴とする引張強度測定装置。 An apparatus for measuring a tensile strength by holding a measured object at at least two locations and applying a tensile force.
Fixing means for fixing one grip portion of the object to be measured;
Tension means for pulling the other gripping part of the object to be measured in a substantially constant direction;
Force measuring means for measuring the tension applied to the object to be measured;
A movable mechanism capable of freely moving one or more gripping portions of the object to be measured in a direction substantially perpendicular to the pulling direction by the pulling means;
A tensile strength measuring device comprising: 前記可動機構を、互いに直交するように配置した二組のリニアガイドで構成する、
請求項３に記載の引張強度測定装置。 The movable mechanism is composed of two sets of linear guides arranged so as to be orthogonal to each other.
The tensile strength measuring apparatus according to claim 3. 前記可動機構による把持部の移動を計測する手段を設ける、
請求項３又は請求項４に記載の引張強度測定装置。 Providing means for measuring movement of the gripper by the movable mechanism;
The tensile strength measuring device according to claim 3 or 4. 前記把持部の移動に関して、良・不良の範囲を設定し、
座標の移動を計測する手段にて計測した把持部の移動が良・不良のいずれの範囲に属するかを判断して、被測定物の形状異常を検出する、
請求項５に記載の引張強度測定装置。 Regarding the movement of the gripping part, set the range of good / bad,
Judging whether the movement of the gripping part measured by the means for measuring the movement of the coordinate belongs to a range of good or bad, and detects a shape abnormality of the object to be measured.
The tensile strength measuring apparatus according to claim 5.
JP2004336194A 2004-11-19 2004-11-19 Tensile strength measuring method and tensile strength measuring instrument Pending JP2006145394A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236873A (en) * 2008-03-28 2009-10-15 Hiroshima Univ Device and method for manufacturing fusion bonding test piece, and device and method for measuring fusion bonding force
JP2010175450A (en) * 2009-01-30 2010-08-12 Tokyo Institute Of Technology Tensile tester
JP2020176870A (en) * 2019-04-16 2020-10-29 大成建設株式会社 Peeling tester
CN114034634A (en) * 2021-11-09 2022-02-11 湖北雨田科技有限公司 Adhesive force testing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236873A (en) * 2008-03-28 2009-10-15 Hiroshima Univ Device and method for manufacturing fusion bonding test piece, and device and method for measuring fusion bonding force
JP2010175450A (en) * 2009-01-30 2010-08-12 Tokyo Institute Of Technology Tensile tester
JP2020176870A (en) * 2019-04-16 2020-10-29 大成建設株式会社 Peeling tester
CN114034634A (en) * 2021-11-09 2022-02-11 湖北雨田科技有限公司 Adhesive force testing device

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