JPH0511449Y2 - - Google Patents
Info
- Publication number
- JPH0511449Y2 JPH0511449Y2 JP1986011534U JP1153486U JPH0511449Y2 JP H0511449 Y2 JPH0511449 Y2 JP H0511449Y2 JP 1986011534 U JP1986011534 U JP 1986011534U JP 1153486 U JP1153486 U JP 1153486U JP H0511449 Y2 JPH0511449 Y2 JP H0511449Y2
- Authority
- JP
- Japan
- Prior art keywords
- test piece
- displacement
- contact
- diameter
- detector
- 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 - Lifetime
Links
- 238000006073 displacement reaction Methods 0.000 claims description 43
- 238000012360 testing method Methods 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 14
- 238000004154 testing of material Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000010453 quartz Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241001414834 Ephemeroptera Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Description
【考案の詳細な説明】
Ａ 産業上の利用分野
本考案は材料試験機に用いられる直径変位検出
器に関する。[Detailed Description of the Invention] A. Industrial Application Field The present invention relates to a diameter displacement detector used in a material testing machine.
Ｂ 従来の技術
従来の直径変位検出器１００は第５図に示すよ
うないわゆる抱き込み式であり、一対の検出レバ
ー１０１ａ，１０１ｂが板ばね１０２を介して互
いに接続され、板ばね１０２のばね力により所定
の接触圧力で試験片TPが挟持される。試験片TP
が直径方向に変形すると検出レバー１０１ａ，１
０１ｂが開き、その開き角に相応した電気信号が
差動トランス等の変位計１０３から出力される。B. Prior Art A conventional diameter displacement detector 100 is of a so-called enclosing type as shown in FIG. The test piece TP is clamped with a predetermined contact pressure. Test piece TP
When the detection levers 101a, 1 deform in the diametrical direction,
01b opens, and an electric signal corresponding to the opening angle is output from the displacement meter 103 such as a differential transformer.
この抱き込み式の検出器１００を使用する際に
は、試験片TPを第６図に示すような砂時計形状
に加工し、試験片TPが変形した際に検出レバー
１０１ａ，１０１ｂがその変形部から逃げないよ
うにしている。従つて、この抱き込み式検出器１
００を用いて第７図に示すストレートな丸棒試験
片TPの直径変位を検出しようとすると、試験片
TPが変形すると二点鎖線で示すように検出レバ
ー１０１ａ，１０１ｂが小径部へ逃げてしまい正
確な検出ができない。 When using this huggable detector 100, the test piece TP is processed into an hourglass shape as shown in FIG. I'm trying not to run away. Therefore, this built-in detector 1
When attempting to detect the diameter displacement of the straight round bar test piece TP shown in Figure 7 using 00, the test piece
When the TP is deformed, the detection levers 101a and 101b escape to the small diameter portion as shown by the two-dot chain line, making accurate detection impossible.
そこで従来は、ストレーナな丸棒試験片TPに
対しては第８図および第９図に示したような直径
変位検出器２００が用いられている。この図は検
出器２００を高温試験装置に用いたものであり、
試験片TPが電気炉２０１内に配置されている。
電気炉２０１には細長い貫通孔２０１ａがあけら
れ、その内壁側および外壁側に設けられたガイド
２０２に案内される３本の石英棒２０３が貫通孔
２０１ａ内を挿通している。石英棒２０３の一端
は試験片TPに所定の接触圧力で当接され、他端
には差動トランス等の変位計２０４が設けられ、
これにより、試験片TPが径方向に変位すると石
英棒２０３を介して変位計２０４が作動してその
変位に相応した電気信号が得られる。 Therefore, conventionally, a diameter displacement detector 200 as shown in FIGS. 8 and 9 has been used for a strainer round bar test piece TP. This figure shows the detector 200 used in a high temperature test device.
A test piece TP is placed in an electric furnace 201.
An elongated through hole 201a is formed in the electric furnace 201, and three quartz rods 203 guided by guides 202 provided on the inner and outer walls of the electric furnace 201 are inserted through the through hole 201a. One end of the quartz rod 203 is brought into contact with the test piece TP with a predetermined contact pressure, and the other end is provided with a displacement meter 204 such as a differential transformer.
Thereby, when the test piece TP is displaced in the radial direction, the displacement meter 204 is operated via the quartz rod 203, and an electric signal corresponding to the displacement is obtained.
あるいはまた、直径変位検出器としてレーザー
等を用いた光学式非接触のものも知られている。 Alternatively, an optical non-contact type using a laser or the like as a diameter displacement detector is also known.
Ｃ 考案が解決しようとする問題点
しかしながら、上述した第８図、第９図に示し
た直径変位検出器２００で軸方向変位が比較的大
きい試験片の直径変位を検出する際、石英棒２０
３が短いと軸方向の変位の影響を受け測定誤差を
生じ、そのため石英棒２０３を長くすると検出器
全体が大きくなつてしまう。C Problems to be Solved by the Invention However, when detecting the diameter displacement of a test piece with a relatively large displacement in the axial direction using the diameter displacement detector 200 shown in FIGS. 8 and 9, the quartz rod 20
If 3 is short, measurement errors will occur due to the influence of displacement in the axial direction, so if the quartz rod 203 is lengthened, the entire detector will become larger.
また、レーザー等による光学式非接触の直径変
位検出装置は高価であるのに加えて、高温下での
試験時には、カゲロウや熱輻射の影響で精度が落
ちるという問題もある。 In addition, optical non-contact diameter displacement detection devices using lasers or the like are expensive, and there is also the problem that when testing at high temperatures, the accuracy decreases due to the effects of mayflies and thermal radiation.
本考案の目的は、このような問題を解消し、ほ
ぼストレートな丸棒やパイプ状の試験片の径方向
変位を、小型にして精度よく検出できる直径変位
検出器を提供することにある。 An object of the present invention is to solve these problems and provide a diameter displacement detector that is compact and capable of accurately detecting radial displacement of a substantially straight round bar or pipe-shaped test piece.
Ｄ 問題点を解決するための手段
本考案は、検出部材の試験片との当接面を平面
とし、その平面における試験片軸方向の長さを試
験片の軸方向変位よりも長くしたものである。D. Means for Solving Problems The present invention is such that the contact surface of the detection member with the test piece is a flat surface, and the length of the plane in the axial direction of the test piece is longer than the axial displacement of the test piece. be.
Ｅ 実施例
第１図〜第３図は本考案の一実施例を示し、第
１図は平面図、第２図は正面図、第３図は第２図
の−線断面図である。E. Embodiment FIGS. 1 to 3 show an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a sectional view taken along the line -- in FIG. 2.
１は変位計取付架台であり、第３図からわかる
ように逆Ｔ字状の基部１ａと、その基部１ａにソ
ケツトボルト２で固着された座板部１ｂとを有
し、基部１ａが試験機本体３にボルト４で固着さ
れている。座板部１ｂ上には変位計ホルダ５が設
けられ、その中央貫通孔５ａに変位計本体６が挿
入され、ホルダ５のすり割部５ｂを貫通するボル
ト７を座板部１ｂに螺合することにより変位計本
体６がホルダ５に取付けられるとともにホルダ５
が変位計取付架台１に固着される。複数のボルト
７とは反対側に１本の支点ピン８が設けられてい
る。この支点ピン８はホルダ５と所定のはめ合い
で嵌合され、また、座板部１ｂとも一部の範囲で
所定のはめ合いで嵌合されるとともに先端部が座
板部１ｂに螺合されている。 Reference numeral 1 designates a displacement meter mounting frame, which has an inverted T-shaped base 1a and a seat plate 1b fixed to the base 1a with socket bolts 2, as seen in FIG. 3 with bolt 4. A displacement meter holder 5 is provided on the seat plate portion 1b, a displacement meter main body 6 is inserted into the central through hole 5a, and a bolt 7 passing through the slotted portion 5b of the holder 5 is screwed into the seat plate portion 1b. As a result, the displacement meter main body 6 is attached to the holder 5, and the holder 5
is fixed to the displacement meter mounting frame 1. One fulcrum pin 8 is provided on the opposite side of the plurality of bolts 7. This fulcrum pin 8 is fitted with the holder 5 with a predetermined fit, and is also fitted with the seat plate part 1b with a predetermined fit in a part of the range, and the tip part is screwed into the seat plate part 1b. ing.
変位計本体６の鉄心６ａの一端には案内棒９が
接続され、他端には接触子１０（検出部材）の取
付棒１１が接続されている。案内棒９と取付棒１
１は軸受１２で支持され、その軸受１２は軸受ホ
ルダ１３に装着されている。そして、軸受ホルダ
１３は２本の案内棒１４によりその位置が固定さ
れている。しかして、案内棒９にはばね受け１５
が螺合され、ばね受け１５と軸受１２との間に圧
縮ばね１６が介装され、これにより取付棒１１が
図示左方、換言すると試験片TP側へ付勢される。 A guide rod 9 is connected to one end of the iron core 6a of the displacement meter main body 6, and a mounting rod 11 of a contactor 10 (detection member) is connected to the other end. Guide rod 9 and mounting rod 1
1 is supported by a bearing 12, and the bearing 12 is mounted on a bearing holder 13. The position of the bearing holder 13 is fixed by two guide rods 14. Therefore, the spring receiver 15 is attached to the guide rod 9.
are screwed together, and a compression spring 16 is interposed between the spring receiver 15 and the bearing 12, thereby urging the mounting rod 11 to the left in the figure, in other words, toward the test piece TP side.
取付棒１１の先端には孔１１ａがあけられ、そ
の孔１１ａに石英棒から成る接触子１０が嵌め込
まれている。そして、取付棒１１先端のねじ部１
１ｂに螺合された締付けナツト１７を締付けるこ
とにより接触子１０が取付棒１１に緊締される。
その接触子１０の先端１０ａはラツパ状に形成さ
れて試験片TPと接触する当接面１０ｂは円形と
されていて、その表面は試験片TPとの摩擦力を
小さくするため滑らかに形成されている。またそ
の直径は、試験片TPが径方向へ変位する際に同
時に生ずる軸方向の変位より大きくされている。 A hole 11a is formed at the tip of the mounting rod 11, and a contact 10 made of a quartz rod is fitted into the hole 11a. Then, the threaded part 1 at the tip of the mounting rod 11
The contact 10 is tightened to the mounting rod 11 by tightening the tightening nut 17 screwed into the contact 1b.
The tip 10a of the contactor 10 is formed in a round shape, and the contact surface 10b that contacts the test piece TP is circular, and the surface is formed smoothly to reduce the frictional force with the test piece TP. There is. Further, its diameter is made larger than the axial displacement that occurs simultaneously when the test piece TP is displaced in the radial direction.
このように構成された変位検出器により試験片
TPの径方向の変位を測定するには、接触子１０
の軸芯が試験片TPの軸芯と直交して通過するよ
うに変位検出器の位置をセツトするとともに、接
触子１０先端の当接面１０ｂを、試験片TPの最
大変形部近傍で当接させる。このとき、ばね１６
のばね力により当接面１０ｂが所定の接触圧力で
試験片TPと当接する。なお、試験片TPの周囲に
放射状に複数の変位検出器を設ける場合、各接触
子１０の軸芯が一致するように高さが調節され
る。 The displacement detector configured in this way detects the test piece.
To measure the radial displacement of the TP, contact 10
The position of the displacement detector is set so that the axis of the test piece TP passes perpendicularly to the axis of the test piece TP, and the abutment surface 10b of the tip of the contact 10 is brought into contact near the maximum deformation part of the test piece TP. let At this time, spring 16
Due to the spring force, the contact surface 10b contacts the test piece TP with a predetermined contact pressure. Note that when a plurality of displacement detectors are provided radially around the test piece TP, the heights are adjusted so that the axes of each contactor 10 coincide with each other.
試験片TPに負荷荷重が加わつて試験片TPがそ
の径方向に変形すると、当接面１０ｂを介して接
触子１０がそれに追従して変位し、変位計６から
その変位量に相応した電気信号がとり出される。
ここで、当接面１０ｂの直径Ｄが試験片軸方向変
位量よりも大きくされているので、第４図ａ→ｂ
のように試験片TPの最大変形部が軸方向にＸ（＜
Ｄ）だけ変位しても接触子１０の位置は試験片
TPの最大変形部に追従することになる。また、
当接面１０ｂは滑らかに形成されているので試験
片TPとの摩擦力が小さく直径変位試験に何ら影
響を及ぼさない。 When a load is applied to the test piece TP and the test piece TP deforms in its radial direction, the contactor 10 follows it and is displaced via the contact surface 10b, and an electric signal corresponding to the amount of displacement is emitted from the displacement meter 6. is taken out.
Here, since the diameter D of the contact surface 10b is made larger than the amount of displacement in the axial direction of the test piece, FIG.
As shown in the figure, the maximum deformation part of the specimen TP is in the axial direction
D) Even if the contactor 10 is displaced by
It will follow the maximum deformation part of TP. Also,
Since the contact surface 10b is formed smoothly, the frictional force with the test piece TP is small and does not affect the diameter displacement test in any way.
因みに、考案者は、３つの直径変位検出器を試
験片TPの周囲に放射状に設け、各検出器の当接
面１０ｂを同一の高さにセツトして試験片TPを
軸方向に１mm移動させた場合、３つの変位計の出
力変化の平均値が直径の0.01％程度であり、当接
面10b上での試験片TPの当接位置が変わつても
それに伴う変位計出力変化は無視できる程度の値
であることを確認した。 Incidentally, the inventor installed three diameter displacement detectors radially around the test piece TP, set the contact surfaces 10b of each detector at the same height, and moved the test piece TP by 1 mm in the axial direction. In this case, the average value of the change in the output of the three displacement meters is about 0.01% of the diameter, and even if the contact position of the test piece TP on the contact surface 10b changes, the resulting change in the output of the displacement meter can be ignored. It was confirmed that the value of
以上では当接面１０ｂを円形として説明した
が、円形に限定されず矩形等でもよい。また、検
出部材の構成等も本実施例に何ら限定されない。 Although the contact surface 10b has been described above as being circular, it is not limited to a circular shape and may be rectangular or the like. Furthermore, the configuration of the detection member is not limited to the present embodiment.
Ｆ 考案の効果
本考案は以上のように構成したから、ほぼスト
レートな丸棒やパイプ状の試験片の径方向変位
を、小型にして精度よく検出できる。F. Effects of the Invention Since the present invention is constructed as described above, the radial displacement of a substantially straight round bar or pipe-shaped test piece can be detected with high precision while being compact.
第１図〜第３図は本考案の一実施例を示す図で
あつて、第１図は平面図、第２図はその側面図、
第３図は第２図の−線断面図、第４図ａ，ｂ
は試験片と接触子当接面との当接状態を説明する
図、第５図〜第９図は従来例を示し、第５図およ
び第６図は砂時計型に加工した試験片TPに抱き
込み式検出レバーをセツトした状態を示す平面図
および側面図、第７図はストレートな丸棒に抱き
込み式検出レバーをセツトした状態を示す側面
図、第８図および第９図は直径変位検出器の従来
例の平面図および側面図である。
１……架台、３……試験機基台、５……ホル
ダ、６……変位計、８……支点ピン、９……案内
棒、１０……接触子、１０ｂ……当接面、１１…
…取付棒、１５……ばね受け、１６……ばね、
TP……試験片。
1 to 3 are views showing one embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view thereof,
Figure 3 is a - line sectional view of Figure 2, Figure 4 a, b
is a diagram explaining the contact state between the test piece and the contact contact surface, Figures 5 to 9 show conventional examples, and Figures 5 and 6 are diagrams showing the state of contact between the test piece and the contact surface. A plan view and a side view showing the state in which the retractable detection lever is set, Figure 7 is a side view showing the state in which the retractable detection lever is set on a straight round bar, and Figures 8 and 9 are for diameter displacement detection. FIG. 2 is a plan view and a side view of a conventional example of a container. DESCRIPTION OF SYMBOLS 1... Frame, 3... Testing machine base, 5... Holder, 6... Displacement meter, 8... Fulcrum pin, 9... Guide rod, 10... Contact, 10b... Contact surface, 11 …
...Mounting rod, 15...Spring holder, 16...Spring,
TP...Test piece.
Claims (1)
検出部材を有し、試験片の直径方向変位に応じた
検出部材の変位量を電気信号としてとり出す材料
試験機の直径変位検出器において、前記検出部材
の試験片との当接面を平面となし、その平面にお
ける試験片軸方向の長さを試験片の軸方向変位よ
りも長くしたことを特徴とする材料試験機の直径
変位検出器。 In a diameter displacement detector for a material testing machine, which has a detection member that is brought into contact with the outer peripheral surface of a test piece with a predetermined contact pressure, and extracts the amount of displacement of the detection member in response to the diametrical displacement of the test piece as an electrical signal. , Diameter displacement detection of a material testing machine, characterized in that the contact surface of the detection member with the test piece is a plane, and the length of the plane in the axial direction of the test piece is longer than the axial displacement of the test piece. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986011534U JPH0511449Y2 (en) | 1986-01-28 | 1986-01-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986011534U JPH0511449Y2 (en) | 1986-01-28 | 1986-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62123506U JPS62123506U (en) | 1987-08-05 |
| JPH0511449Y2 true JPH0511449Y2 (en) | 1993-03-22 |
Family
ID=30798839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986011534U Expired - Lifetime JPH0511449Y2 (en) | 1986-01-28 | 1986-01-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0511449Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55131711A (en) * | 1979-04-02 | 1980-10-13 | Hitachi Ltd | Solid object deformation measuring method |
| JPS6035009A (en) * | 1983-06-15 | 1985-02-22 | エクソン・リサ−チ・アンド・エンジニアリング・カンパニ− | Alpha-olefin copolymer of narrow mwd |
-
1986
- 1986-01-28 JP JP1986011534U patent/JPH0511449Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55131711A (en) * | 1979-04-02 | 1980-10-13 | Hitachi Ltd | Solid object deformation measuring method |
| JPS6035009A (en) * | 1983-06-15 | 1985-02-22 | エクソン・リサ−チ・アンド・エンジニアリング・カンパニ− | Alpha-olefin copolymer of narrow mwd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62123506U (en) | 1987-08-05 |
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