JPH0345166Y2 - - Google Patents
Info
- Publication number
- JPH0345166Y2 JPH0345166Y2 JP20209385U JP20209385U JPH0345166Y2 JP H0345166 Y2 JPH0345166 Y2 JP H0345166Y2 JP 20209385 U JP20209385 U JP 20209385U JP 20209385 U JP20209385 U JP 20209385U JP H0345166 Y2 JPH0345166 Y2 JP H0345166Y2
- Authority
- JP
- Japan
- Prior art keywords
- grip
- shaft
- test piece
- actuator
- test
- 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
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、高速引張試験用の試験片つかみ装
置に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a test piece gripping device for high-speed tensile testing.
［従来の技術］
高速引張試験においては、高速で移動するアク
チユエータでつかみ具を介して試験片に試験荷重
を負荷する。第３図はこの場合のアクチユエータ
のストロークとその速度との関係を示す図であつ
て、図示の如く、アクチユエータが所定の負荷速
度v0になるまでにはアクチユエータが一定の距離
ｄを助走する必要がある。ところで、従来の試験
片つかみ具は、アクチユエータが動作を開始する
と同時に試験片に荷重が負荷されるようになつて
いた。[Prior Art] In a high-speed tensile test, a test load is applied to a test piece via a grip using an actuator that moves at high speed. FIG. 3 is a diagram showing the relationship between the stroke of the actuator and its speed in this case, and as shown in the figure, the actuator needs to run a certain distance d before the actuator reaches a predetermined load speed v0 . There is. By the way, in conventional test piece gripping tools, a load is applied to the test piece at the same time as the actuator starts operating.
［考案が解決しようとする問題点］
したがつて、従来の試験片つかみ具を用いて試
験を行なうと、アクチユエータの移動速度ｖが所
定速度v0以下であるストロークｓ＝０〜s0の間に
も試験片に荷重がかかるため、正確な試験結果が
得られないという問題点があつた。[Problem to be solved by the invention] Therefore, when a test is conducted using a conventional test specimen grip, the movement speed v of the actuator is less than or equal to the predetermined speed v 0 and the stroke s = 0 to s 0 . However, since a load is applied to the test piece, there was a problem that accurate test results could not be obtained.
［問題点を解決するための手段］
上記問題点を解決するために、本考案は次のよ
うな構成とした。すなわち、本考案にかかる試験
片つかみ装置は、試験片が取り付けられるつかみ
具と、前端部が前記つかみ具の後端部に連結さ
れ、後端部は端部側が拡径するテーパ部として形
成されたシヤフトと、該シヤフトが前後動自在に
嵌合する中空部をそなえ該中空部の前端部には前
記シヤフトのテーパ部が係合するテーパ部が形成
されかつ後部が試験機に連結される筒状の収納筒
と、前記シヤフトのテーパ部が収納筒のテーパ部
から充分離れた後方位置に位置するようにつかみ
具を後方へ付勢するバネとをそなえてなる。[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration. That is, the test piece gripping device according to the present invention includes a grip to which a test piece is attached, a front end connected to a rear end of the grip, and the rear end formed as a tapered part whose diameter increases on the end side. a cylinder having a hollow part into which the shaft is fitted so as to be movable back and forth, a tapered part to which a tapered part of the shaft engages is formed at the front end of the hollow part, and a rear part of which is connected to a testing machine; The storage tube is provided with a spring that biases the grip rearward so that the tapered portion of the shaft is located at a rearward position sufficiently distant from the tapered portion of the storage tube.
［作用］
試験開始時にアクチユエータが移動を開始する
と、収納筒がバネの弾力に抗して後方へ移動す
る。この間シヤフトと収納筒とが相対移動するだ
けで、バネの張力以外にはつかみ具に荷重が加わ
らない。アクチユエータが所定量移動し、所定の
試験速度に達した時点で、シヤフトのテーパ部と
収納筒のテーパ部とが係合し、つかみ具を介して
試験片に試験荷重が伝達されるようになる。[Function] When the actuator starts moving at the start of the test, the storage tube moves backward against the elasticity of the spring. During this time, the shaft and the storage tube only move relative to each other, and no load is applied to the grip other than the tension of the spring. When the actuator moves a predetermined amount and reaches a predetermined test speed, the tapered portion of the shaft and the tapered portion of the storage tube engage, and the test load is transmitted to the test piece via the grip. .
［実施例］
第１図および第２図は本考案にかかる試験片つ
かみ装置の１実施例をあらわす。[Embodiment] FIGS. 1 and 2 show an embodiment of the test piece gripping device according to the present invention.
この試験片つかみ装置１は、引張試験機用のつ
かみ装置であり、下端部にピン式つかみ具２をそ
なえている。つかみ具２は、深溝状の凹部４を有
するフレーム５、滑止めの凹凸面としてて形成さ
れた挾持面６を有する１対の挾持板７，７、およ
び取付けピン８からなり、挾持面６，６で試験片
TPを挾んだ１対の挾持板７，７をフレーム６の
凹部４に取り付けるようになつている。その取付
けは、フレーム６のピン孔１０，１０と挾持板
７，７のピン孔１１，１１に取付けピン８を挿通
して行なう。図中の１３は、取付けピン脱落防止
用の止め具である。試験片TPはボルト１４，１
４によつて挾持板７，７に締付け固定される。ま
た、フレーム５には左右両側部に突出するフツク
（Ａで示す）１５が設けられている。なお、試験
片つかみ具としては、図示例のようなピン式つか
み具に限らず、他の適当なつかみ具を使用しても
よい。 This test piece gripping device 1 is a gripping device for a tensile testing machine, and is equipped with a pin-type gripping tool 2 at the lower end. The grip 2 consists of a frame 5 having a deep groove-shaped recess 4, a pair of clamping plates 7, 7 having a clamping surface 6 formed as a non-slip uneven surface, and a mounting pin 8. Test piece at 6
A pair of holding plates 7, 7 holding the TP between them are attached to the recess 4 of the frame 6. The mounting is carried out by inserting the mounting pins 8 into the pin holes 10, 10 of the frame 6 and the pin holes 11, 11 of the clamping plates 7, 7. 13 in the figure is a stopper for preventing the attachment pin from falling off. Test piece TP is bolt 14,1
4 is tightened and fixed to the clamping plates 7, 7. Further, the frame 5 is provided with hooks (indicated by A) 15 that protrude from both left and right sides. Note that the test piece gripping tool is not limited to the pin-type gripping tool shown in the illustrated example, but other suitable gripping tools may be used.
上記つかみ具２の上部（後部）には、シヤフト
収納筒２０に摺動自在に嵌合するシヤフト２１が
螺着されている。シヤフト２１は、上端部がテー
パ状に拡径したテーパ部２２になつている。一
方、収納筒２０は、内径が全体的に等径の筒体で
ある上部材２４と、内径が上位ほど大径であるテ
ーパ状に形成された筒体である下部材２５とから
なり、両部材２４，２５がねじ結合されている。
また、上部材２４の両側面には複数段にフツク穴
２７ａ，２７ｂ，２７ｃ（図示例では３段）が設
けられており、これらフツク穴のうち適当な一つ
の穴にフツク１５（Ｂで示す）が取り付けられて
いる。そして、このフツク１５（Ｂ）と前記フツ
ク１５（Ａ）との間につかみ具支持スプリング２
８が張設されている。つかみ具２はこれらスプリ
ング２８，２８によつて支持され、負荷の加わら
ない状態においてはつかみ具２の上端面が収納筒
２０の下端面に当接し、シヤフト２１のテーパ部
２２が収納筒２０の上端部付近に位置するように
なつている。フツク１５（Ｂ）を取り付けるフツ
ク穴を変えることにより、スプリング２８の張力
を調節することができる。 A shaft 21 that is slidably fitted into the shaft storage cylinder 20 is screwed onto the upper part (rear part) of the grip 2. The shaft 21 has a tapered portion 22 whose upper end portion is tapered and expanded in diameter. On the other hand, the storage cylinder 20 is made up of an upper member 24 which is a cylinder whose inner diameter is uniform throughout, and a lower member 25 which is a tapered cylinder whose inner diameter becomes larger toward the top. Members 24 and 25 are screwed together.
Furthermore, hook holes 27a, 27b, and 27c are provided in multiple stages (three stages in the illustrated example) on both sides of the upper member 24, and a hook 15 (indicated by B) is inserted into a suitable one of these hook holes. ) is attached. A grip support spring 2 is provided between this hook 15 (B) and the hook 15 (A).
8 is installed. The grip 2 is supported by these springs 28 , 28 , and when no load is applied, the upper end surface of the grip 2 comes into contact with the lower end surface of the storage tube 20 , and the tapered portion 22 of the shaft 21 contacts the lower end surface of the storage tube 20 . It is located near the top end. The tension of the spring 28 can be adjusted by changing the hook hole in which the hook 15(B) is attached.
この試験片つかみ装置１は、材料試験機の引張
アクチユエータ３０にシヤフト収納筒２０の上端
部を連結して使用される。試験片TPの下端部は、
荷重検出用のロードセル３１に取り付けられた下
側のつかみ具２′によつてつかまれる。アクチユ
エータ３０は高速度で上方に移動するようになつ
ている。 This test piece gripping device 1 is used by connecting the upper end of the shaft storage cylinder 20 to a tension actuator 30 of a material testing machine. The lower end of the test piece TP is
It is gripped by a lower grip 2' attached to a load cell 31 for detecting load. Actuator 30 is adapted to move upward at high speed.
高速引張試験を行なうに際し、アクチユエータ
３０を起動すると、アクチユエータ３０は第３図
に示されるような速度変化で漸次速度を増しなが
ら上動する。アクチユエータ３０のストロークｓ
が０〜s0の間は、収納筒２０がシヤフト２１対し
て摺動するため、つかみ具２には荷重がかからな
い。なお、収納筒２０の上動によつスプリング２
８が伸長してつかみ具２にスプリングの張力が加
わるが、このスプリング２８の張力は試験荷重に
比してごく小さいため、試験結果への影響はほと
んどない。アクチユエータ３０のストロークｓが
s0になると収納筒２０の内壁テーパ部２５ａがシ
ヤフト２１のテーパ部２２に係合し、引張荷重が
つかみ具２に伝達されるようになる。このとき、
アクチユエータ３０の上動速度ｖは所定の試験速
度v0になつている。 When the actuator 30 is activated when performing a high-speed tensile test, the actuator 30 moves upward while gradually increasing the speed as shown in FIG. Stroke s of actuator 30
Between 0 and s0 , the storage tube 20 slides against the shaft 21, so no load is applied to the grip 2. In addition, the spring 2 is caused by the upward movement of the storage cylinder 20.
8 is expanded and a spring tension is applied to the grip 2, but since the tension of the spring 28 is extremely small compared to the test load, it has almost no effect on the test results. The stroke s of the actuator 30 is
When s 0 is reached, the inner wall tapered portion 25a of the storage tube 20 engages with the tapered portion 22 of the shaft 21, and the tensile load is transmitted to the grip 2. At this time,
The upward movement speed v of the actuator 30 is set to a predetermined test speed v0 .
このように、アクチユエータ３０の所定速度v0
になつた時点で試験荷重が試験片TPに負荷され
るようになつているので、アクチユエータの助走
時の影響がなく、正確な試験結果が得られる。ま
た、収納筒２０とシヤフト２１とが両者のテーパ
部同士で係合するので、荷重の伝達開始時にその
伝達が円滑に行なわれ、高速荷重が急激に加えら
れても、つかみ具が跳ねたり横振れを生じたりす
ることがない。 In this way, the predetermined speed v 0 of the actuator 30
Since the test load is applied to the test piece TP at the point when the actuator reaches the TP, there is no influence during run-up of the actuator, and accurate test results can be obtained. In addition, since the storage tube 20 and the shaft 21 engage with each other at their tapered portions, the load is transferred smoothly at the start of the load transfer, and even if a high-speed load is suddenly applied, the grip will not bounce or sideways. No vibration occurs.
また、このつかみ装置１は、つかみ具２がスプ
リング２８，２８によつて支持されているので、
試験片TPにつかみ具２の自重が影響せず、さら
に収納筒２０とつかみ具２間の引張方向のガタツ
キが吸収されるという利点がある。 Moreover, in this gripping device 1, since the gripping tool 2 is supported by the springs 28, 28,
There is an advantage that the weight of the gripper 2 does not affect the test piece TP, and furthermore, the wobbling in the tensile direction between the storage cylinder 20 and the gripper 2 is absorbed.
［考案の効果］
以上の説明から明らかなように、本考案にかか
る試験片つかみ装置は、アクチユエータの移動速
度が所定値になつた時点で試験片に試験荷重がか
かるように構成されているので、正確な負荷が行
なわれるようになり、試験の精度が向上した。[Effect of the invention] As is clear from the above explanation, the test piece gripping device according to the present invention is configured so that a test load is applied to the test piece when the actuator movement speed reaches a predetermined value. , the accuracy of the test was improved as more accurate loading was performed.
第１図は本考案にかかる試験片つかみ装置の断
面図、第２図はその要部の側面図、および第３図
はアクチユエータのストロークと移動速度との関
係をあらわす説明図である。
１……試験片つかみ装置、２，２′……つかみ
具、２０……収納筒、２１……シヤフト、２２，
２５ａ……テーパ部、TP……試験片。
FIG. 1 is a sectional view of the test piece gripping device according to the present invention, FIG. 2 is a side view of the main parts thereof, and FIG. 3 is an explanatory diagram showing the relationship between the stroke of the actuator and the moving speed. 1... Test piece gripping device, 2, 2'... Gripping tool, 20... Storage tube, 21... Shaft, 22,
25a...Tapered part, TP...Test piece.
Claims (1)
前記つかみ具の後端部に連結され、後端部は端部
側が拡径するテーパ部として形成されたシヤフト
と、該シヤフトが前後動自在に嵌合する中空部を
そなえ該中空部の前端部には前記シヤフトのテー
パ部が係合するテーパ部が形成されかつ後部が試
験機に連結される筒状の収納筒と、前記シヤフト
のテーパ部が収納筒のテーパ部から充分離れた後
方位置に位置するようにつかみ具を後方へ付勢す
るバネとをそなえてなる試験片つかみ装置。 A grip to which a test piece is attached, a shaft whose front end is connected to the rear end of the grip, and whose rear end is formed as a tapered part whose diameter increases on the end side, and the shaft is fitted so as to be movable back and forth. a cylindrical storage cylinder, which has a hollow part that fits together, and a tapered part that engages with the tapered part of the shaft is formed at the front end of the hollow part, and whose rear part is connected to the testing machine; A specimen gripping device comprising a spring that biases the gripping tool rearward so that the gripping tool is positioned at a rearward position sufficiently away from the tapered part of the storage tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20209385U JPH0345166Y2 (en) | 1985-12-26 | 1985-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20209385U JPH0345166Y2 (en) | 1985-12-26 | 1985-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62180744U JPS62180744U (en) | 1987-11-17 |
| JPH0345166Y2 true JPH0345166Y2 (en) | 1991-09-24 |
Family
ID=31166158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20209385U Expired JPH0345166Y2 (en) | 1985-12-26 | 1985-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345166Y2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6965205B2 (en) | 1997-08-26 | 2005-11-15 | Color Kinetics Incorporated | Light emitting diode based products |
| US7038399B2 (en) | 2001-03-13 | 2006-05-02 | Color Kinetics Incorporated | Methods and apparatus for providing power to lighting devices |
| US7064498B2 (en) | 1997-08-26 | 2006-06-20 | Color Kinetics Incorporated | Light-emitting diode based products |
| US7161311B2 (en) | 1997-08-26 | 2007-01-09 | Color Kinetics Incorporated | Multicolored LED lighting method and apparatus |
| US7186003B2 (en) | 1997-08-26 | 2007-03-06 | Color Kinetics Incorporated | Light-emitting diode based products |
| US7202613B2 (en) | 2001-05-30 | 2007-04-10 | Color Kinetics Incorporated | Controlled lighting methods and apparatus |
| US7242152B2 (en) | 1997-08-26 | 2007-07-10 | Color Kinetics Incorporated | Systems and methods of controlling light systems |
| US7358679B2 (en) | 2002-05-09 | 2008-04-15 | Philips Solid-State Lighting Solutions, Inc. | Dimmable LED-based MR16 lighting apparatus and methods |
| US7385359B2 (en) | 1997-08-26 | 2008-06-10 | Philips Solid-State Lighting Solutions, Inc. | Information systems |
| US7525254B2 (en) | 1997-08-26 | 2009-04-28 | Philips Solid-State Lighting Solutions, Inc. | Vehicle lighting methods and apparatus |
| US7598681B2 (en) | 2001-05-30 | 2009-10-06 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for controlling devices in a networked lighting system |
| US7642730B2 (en) | 2000-04-24 | 2010-01-05 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for conveying information via color of light |
-
1985
- 1985-12-26 JP JP20209385U patent/JPH0345166Y2/ja not_active Expired
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7525254B2 (en) | 1997-08-26 | 2009-04-28 | Philips Solid-State Lighting Solutions, Inc. | Vehicle lighting methods and apparatus |
| US7385359B2 (en) | 1997-08-26 | 2008-06-10 | Philips Solid-State Lighting Solutions, Inc. | Information systems |
| US7064498B2 (en) | 1997-08-26 | 2006-06-20 | Color Kinetics Incorporated | Light-emitting diode based products |
| US7161311B2 (en) | 1997-08-26 | 2007-01-09 | Color Kinetics Incorporated | Multicolored LED lighting method and apparatus |
| US7186003B2 (en) | 1997-08-26 | 2007-03-06 | Color Kinetics Incorporated | Light-emitting diode based products |
| US6965205B2 (en) | 1997-08-26 | 2005-11-15 | Color Kinetics Incorporated | Light emitting diode based products |
| US7462997B2 (en) | 1997-08-26 | 2008-12-09 | Philips Solid-State Lighting Solutions, Inc. | Multicolored LED lighting method and apparatus |
| US7242152B2 (en) | 1997-08-26 | 2007-07-10 | Color Kinetics Incorporated | Systems and methods of controlling light systems |
| US7274160B2 (en) | 1997-08-26 | 2007-09-25 | Color Kinetics Incorporated | Multicolored lighting method and apparatus |
| US7642730B2 (en) | 2000-04-24 | 2010-01-05 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for conveying information via color of light |
| US7352138B2 (en) | 2001-03-13 | 2008-04-01 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for providing power to lighting devices |
| US7038399B2 (en) | 2001-03-13 | 2006-05-02 | Color Kinetics Incorporated | Methods and apparatus for providing power to lighting devices |
| US7202613B2 (en) | 2001-05-30 | 2007-04-10 | Color Kinetics Incorporated | Controlled lighting methods and apparatus |
| US7598681B2 (en) | 2001-05-30 | 2009-10-06 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for controlling devices in a networked lighting system |
| US7598684B2 (en) | 2001-05-30 | 2009-10-06 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for controlling devices in a networked lighting system |
| US7358679B2 (en) | 2002-05-09 | 2008-04-15 | Philips Solid-State Lighting Solutions, Inc. | Dimmable LED-based MR16 lighting apparatus and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62180744U (en) | 1987-11-17 |
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