JPS5837499B2 - Grip eccentricity removal method - Google Patents
Grip eccentricity removal methodInfo
- Publication number
- JPS5837499B2 JPS5837499B2 JP2895381A JP2895381A JPS5837499B2 JP S5837499 B2 JPS5837499 B2 JP S5837499B2 JP 2895381 A JP2895381 A JP 2895381A JP 2895381 A JP2895381 A JP 2895381A JP S5837499 B2 JPS5837499 B2 JP S5837499B2
- Authority
- JP
- Japan
- Prior art keywords
- grip
- grips
- mounting flange
- test
- test piece
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0405—Features allowing alignment between specimen and chucks
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【発明の詳細な説明】
この発明は試験片の両端を一対のつかみ具によって把持
し、試験片に引張試験荷重、圧縮試験荷重などを与える
材料試験機においてつかみ具の偏心を除去する方式に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing the eccentricity of the grips in a material testing machine in which both ends of a test piece are gripped by a pair of grips and a tensile test load, a compression test load, etc. are applied to the test piece. It is.
試験片の両端を一対のつかみ具によって把持して試験片
に試験荷重を与えるとき、各つかみ具が試験荷重軸に対
し偏心した位置にあると、それが試験精度に影響し、正
確な試験を行なうことができない。When applying a test load to a test piece by gripping both ends of the test piece with a pair of grips, if each grip is positioned eccentrically with respect to the test load axis, this will affect test accuracy and make it difficult to perform accurate tests. I can't do it.
つかみ具に偏心荷重がかかり、つかみ具が損傷する場合
もある。An eccentric load is applied to the grip, and the grip may be damaged.
この発明は一対のつかみ具を試験荷重軸に対し正確にセ
ンターリングすることができ、その偏心を完全に除去す
ることができる方式を提供するものである。The present invention provides a method that can accurately center a pair of grips with respect to the test load axis and completely eliminate eccentricity.
以下、この発明の実施例を図面について説明する。Embodiments of the present invention will be described below with reference to the drawings.
図において試験片１の両端は上下一対のっかみ具２ａ，
２ｂによって把持される。In the figure, both ends of the test piece 1 have a pair of upper and lower hooks 2a,
2b.
各っかみ具２ａ，２ｂの中心部はそれぞれ連結棒３ａ，
３ｂを介して一対のつかみ具取付７ランジ４ａ，４ｂに
連結される。The center of each hook 2a, 2b is connected to a connecting rod 3a,
3b to a pair of grip attachment 7 langes 4a, 4b.
各連結棒３ａ，３ｂはばね鋼などの可撓性のある強度の
太きいものが使用される試験時には試験片１に試験荷重
を与えるに先立って、各取付フランジ４ａ，４ｂが試験
荷重負荷機構によって矢印で示されている方向に，駆動
され、各連結棒３ａ，３ｂを介して試験片１に引張子荷
重が与えられる。Each connecting rod 3a, 3b is made of flexible, strong, and thick material such as spring steel. Before applying a test load to the test piece 1, each mounting flange 4a, 4b is connected to a test load loading mechanism. is driven in the direction shown by the arrow, and a tensile load is applied to the test piece 1 via each connecting rod 3a, 3b.
各取付７ランジ４ａ，４ｂぱ試験荷重軸に同心に配置さ
れ、試験荷重負荷機構に連結されている。Each attachment 7 lange 4a, 4b is arranged concentrically with the test load axis and connected to the test load application mechanism.
各連結棒３ａ，３ｂは可撓性があり、各つかみ具２ａ，
２ｂの中心部が連結棒３ａ，３ｂによって各取付フラン
ジ４ａ，４ｂに連結されているため、試験片１に引張子
荷重を与えると試験片１釦よび各つかみ具２ａ，２ｂは
各連結棒３ ａ ， ３ ｂによって取付フランジ４ａ
，４ｂ、試験片負荷機構に対しセンターリングされる。Each connecting rod 3a, 3b is flexible, each grip 2a,
2b is connected to each mounting flange 4a, 4b by connecting rods 3a, 3b, so when a tensioner load is applied to the test piece 1, the test piece 1 button and each grip 2a, 2b are connected to each connecting rod 3. Mounting flange 4a by a, 3b
, 4b, centered on the specimen loading mechanism.
これによって、各つかみ具２ａ，２ｂが試験荷重軸に対
し正確にセンターリングされ、その偏心が完全に除去さ
れるものである。As a result, each grip 2a, 2b is accurately centered with respect to the test load axis, and its eccentricity is completely eliminated.
試験片１に与える引張予荷重は各つかみ具２ａ，２ｂを
連結棒３ ａ ， ３ ｂによってセンターリングす
ることができる程度の小さい荷重でよい。The tensile preload applied to the test piece 1 may be small enough to center the grips 2a, 2b by the connecting rods 3a, 3b.
連結棒３ａ，３ｂは引張予荷重に耐えることができる程
度の強度のものでよい。The connecting rods 3a, 3b may be strong enough to withstand the tensile preload.
図示されているように、上側のつかみ具取付フランジ４
ａはつかみ具２ａの上面に形成された凹部内に挿入され
、この凹部にはウソドメタル５ａが収容されている。As shown, the upper grip mounting flange 4
a is inserted into a recess formed on the upper surface of the grip 2a, and a false metal 5a is accommodated in this recess.
下側のつかみ具２ｂは取付フランジ４ｂの上面に形成さ
れた凹部内に挿入され、この凹部にも同様にウッドメタ
ル５ｂが収容されている。The lower grip 2b is inserted into a recess formed on the upper surface of the mounting flange 4b, and the wood metal 5b is similarly accommodated in this recess.
ウソドメタル５ａ，５ｂは、鉛、錫等の低融点合金から
なり、その溶融点は８０℃程度である。The false metals 5a and 5b are made of a low melting point alloy such as lead or tin, and have a melting point of about 80°C.
試験片１に引張予荷重が与えられ、各つかみ具がセンタ
ーリングされた後、各ウッドメタル５ａ，５ｂは冷却さ
れ、凝固する。After a tensile preload is applied to the specimen 1 and each grip is centered, each wood metal 5a, 5b is cooled and solidified.
これによって、各つかみ具２ａ，２ｂが各取付フランジ
４ ａ ｔ４ｂに固定される。Thereby, each grip 2a, 2b is fixed to each mounting flange 4a t4b.
したがって、各つかみ具２ ａ ｔ２ｂは試験荷重軸に
対し正確にセンターリングされ、完全に偏心が除去され
た状態で各取付フランジ４ａ，４ｂに固定される。Therefore, each grip 2a t2b is accurately centered with respect to the test load axis and fixed to each mounting flange 4a, 4b with no eccentricity completely removed.
その後、各取付フランジ４ａ，４ｂ、ウッドメタル５ａ
，５ｂ及びつかみ具２ａ，２ｂを介して試験片１に引張
試験荷重又は圧縮試験荷重が与えられる。After that, each mounting flange 4a, 4b, wood metal 5a
, 5b and the grips 2a, 2b, a tensile test load or a compressive test load is applied to the test piece 1.
つかみ具２ａ，２ｂは試験荷重軸に対し正確にセンター
リングされ、完全にその偏心が除去されているため、正
確な試験を行なうことができる。Since the grips 2a and 2b are accurately centered with respect to the test load axis and their eccentricity is completely eliminated, accurate tests can be performed.
又、各つかみ具２ａ，２ｂに偏心荷重がかかる恐れがな
く、各つかみ具２ａ，２ｂの損傷は回避される。Furthermore, there is no risk of eccentric load being applied to each grip 2a, 2b, and damage to each grip 2a, 2b is avoided.
試験後、各ウッドメタル５ａ，５ｂを例えば蒸気等Ｃ加
熱し、溶融させると、各つかみ具２ ａ ｔ２ｂを各取
付フランジ４ａ，４ｂに対し揺動させることができ、次
の試験の試験片の両端を容易に把持することができる．
なチ−、各つかみ具２ａ，２ｂは必ずしもウッドメタル
５ａ，５ｂによって固定する必要はなく、そのほかの適
当な固定方法を採用してもよい。After the test, when each wood metal 5a, 5b is heated with steam or the like to melt it, each grip 2a, 2b can be swung relative to each mounting flange 4a, 4b, and the next test specimen is Both ends can be easily grasped. However, the grips 2a and 2b do not necessarily need to be fixed using wood metals 5a and 5b, and other suitable fixing methods may be used.
前記実施例で明らかなように、この発明は一対のつかみ
具の中心部をそれぞれ可撓性のある連結棒を介して一対
のつかみ具取付フランジに連結し、各連結棒を介して試
験片に引張予荷重を与えた後、各つかみ具を各取付フラ
ンジに固定したから、各つかみ具を試験荷重軸に対し正
確にセンターリングすることができ、完全にその偏心を
除去することができるものである。As is clear from the above embodiments, the present invention connects the center portions of a pair of grips to a pair of grip mounting flanges through flexible connecting rods, and connects the test piece to the test piece through each connecting rod. After applying a tensile preload, each grip was fixed to each mounting flange, so each grip could be accurately centered with respect to the test load axis, and its eccentricity could be completely eliminated. be.
図面はこの発明の実施例を示す断面図である。
１・・・・・・試験片、２ａ，２ｂ・・・・・・つかみ
具、３ ａ ｔ３ｂ・・・・・・連結棒、４ａ，４ｂ・
・・・・・取付７ランジ、５ａ，５ｂ・・・・・・ウッ
ドメタル。The drawings are cross-sectional views showing embodiments of the invention. 1...Test piece, 2a, 2b...Gripper, 3a t3b...Connecting rod, 4a, 4b...
...Mounting 7 lunge, 5a, 5b...Wood metal.
Claims (1)
夫々可撓性のある連結棒を介して一対のつかみ具取付７
ランジに連結し、前記各連結棒を介して試験片に引張子
荷重を与えた後、前記各つかみ具を各取付フランジに固
定することを特徴とするつかみ具の偏心除去方式。 ２ 上側のつかみ具取付７ランジを上側のつかみ具の上
面に形成した凹部内に挿入し、下側のつかみ具を下側の
取付フランジの上面に形成した凹部内に挿入し、前記各
凹部に夫々ウッドメタルを収容し、このウッドメタルを
凝固させることによって各つかみ具を各取付フランジに
固定することを特徴とする特許請求の範囲第１項に記載
のつかみ具の偏心除去方式。[Claims] 1. Attach the pair of grips 7 to the center portions of the pair of grips gripping both ends of the test piece through flexible connecting rods, respectively.
A method for removing eccentricity of grips, characterized in that each grip is connected to a lunge and is fixed to each mounting flange after a tensile load is applied to the test specimen via each of the connecting rods. 2. Insert the upper grip mounting 7 langes into the recesses formed on the upper surface of the upper grip, insert the lower grip into the recesses formed on the upper surface of the lower mounting flange, and insert the lower grip into the recesses formed on the upper surface of the lower mounting flange. 2. The method for removing eccentricity of grips according to claim 1, wherein each grip is fixed to each mounting flange by respectively accommodating wood metal and solidifying the wood metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2895381A JPS5837499B2 (en) | 1981-02-27 | 1981-02-27 | Grip eccentricity removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2895381A JPS5837499B2 (en) | 1981-02-27 | 1981-02-27 | Grip eccentricity removal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57142542A JPS57142542A (en) | 1982-09-03 |
| JPS5837499B2 true JPS5837499B2 (en) | 1983-08-16 |
Family
ID=12262771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2895381A Expired JPS5837499B2 (en) | 1981-02-27 | 1981-02-27 | Grip eccentricity removal method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5837499B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6279141U (en) * | 1985-11-07 | 1987-05-20 | ||
| US4721000A (en) * | 1986-09-19 | 1988-01-26 | Instron Corporation | Axial loading material testing |
| JPH067360Y2 (en) * | 1987-02-13 | 1994-02-23 | 株式会社島津製作所 | Material testing machine |
-
1981
- 1981-02-27 JP JP2895381A patent/JPS5837499B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57142542A (en) | 1982-09-03 |
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