JPH0330812Y2 - - Google Patents
Info
- Publication number
- JPH0330812Y2 JPH0330812Y2 JP1985111976U JP11197685U JPH0330812Y2 JP H0330812 Y2 JPH0330812 Y2 JP H0330812Y2 JP 1985111976 U JP1985111976 U JP 1985111976U JP 11197685 U JP11197685 U JP 11197685U JP H0330812 Y2 JPH0330812 Y2 JP H0330812Y2
- Authority
- JP
- Japan
- Prior art keywords
- steel wire
- frame
- wire
- shape memory
- memory alloy
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 17
- 238000005491 wire drawing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、たとえばモアレ格子や振動篩のよう
な、鋼線などのグレーテイングもしくはスクリー
ンを、精度良くかつ稠密に張る構造に関するもの
である。以下グレーテイング及びスクリーンを総
称してスクリーンと呼ぶ。[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a structure in which gratings or screens made of steel wire, such as moiré gratings or vibrating screens, are stretched accurately and densely. Hereinafter, the grating and the screen will be collectively referred to as the screen.
（従来の技術）
近年の産業用部品の高精度化と超小型化に伴
い、たとえば三次元形状測定に使用されるモアレ
格子のスクリーン間隔を狭めて、測定精度の向上
を図つたり、また振動篩のスクリーンの間隔を小
さくすることにより、超微粒子の篩分けを行なう
などの要求が高まつている。(Prior art) With the recent trend toward higher precision and miniaturization of industrial parts, for example, the screen spacing of moiré gratings used for three-dimensional shape measurement has been narrowed to improve measurement accuracy, and vibration There is an increasing demand for sieving ultrafine particles by reducing the spacing between sieve screens.
周知のようにモアレ格子のスクリーンにおいて
は、実開昭56−126509号公報の提案では、スクリ
ーンは第４図に示すように、鋼線１が枠２に等間
隔に張られている。端部は通常ネジ３などにより
固定されるが、引張による鋼線１の伸び、または
温度変化による鋼線１の線膨張がある場合は、端
部にばね４が組み込まれる。 As is well known, in the Moire lattice screen proposed in Japanese Utility Model Application Publication No. 56-126509, steel wires 1 are stretched around a frame 2 at equal intervals as shown in FIG. The ends are usually fixed with screws 3 or the like, but if the steel wire 1 stretches due to tension or linear expansion occurs due to temperature changes, a spring 4 is incorporated in the ends.
一方、第５図に示すように、鋼線１のたるみの
最大値δは、鋼線１にかかる張力Ｈ、支持スパン
ｌ、鋼線１の長さあたりの自重ｗにより、δ＝
wl2／8Hで表わすことができるが、スクリーンの精
度を向上させるには、この式から張力を高める必
要がある。なお支持スパンｌおよび鋼線１の長さ
あたりの重量は、格子もしくは篩の寸法や、対象
物などにより決定されるものである。 On the other hand, as shown in FIG. 5, the maximum value δ of the slack of the steel wire 1 is determined by the tension H applied to the steel wire 1, the support span l, and the own weight w per length of the steel wire 1.
It can be expressed as wl 2 /8H, but to improve the accuracy of the screen, it is necessary to increase the tension from this equation. Note that the support span l and the weight per length of the steel wire 1 are determined by the dimensions of the grid or sieve, the object, etc.
このような制限下で、鋼線１のたるみを小さく
し、高精度化を実現させるのには、初期張力を大
きくとる方式か、ばね４を端部に組み込む場合
は、ばね定数を高くとる方式が実施されている。 Under these restrictions, in order to reduce the slack of the steel wire 1 and achieve high precision, there is a method to increase the initial tension, or a method to increase the spring constant when incorporating the spring 4 at the end. is being implemented.
しかし前者の方式では、使用過程における鋼線
１などの伸びや、鋼線１の線膨張があるたびに、
ひんぱんな張力調整が不可欠なもので、通常安定
した精度を維持するのは困難である。また後者の
方式で、ばね定数を高めるには、ばね線径および
ばね外径寸法が必然的に大きくなり、隣接するば
ねと干渉することから、鋼線間隔を小さくして稠
密化するには限度がある。 However, in the former method, each time there is elongation of the steel wire 1 or linear expansion of the steel wire 1 during the use process,
Frequent tension adjustment is essential, and it is usually difficult to maintain stable accuracy. In addition, in the latter method, in order to increase the spring constant, the spring wire diameter and spring outer diameter inevitably increase, which interferes with adjacent springs, so there is a limit to reducing the distance between the steel wires and increasing the density. There is.
（考案が解決しようとする問題点）
本考案は、たとえばモアレ格子や振動篩のよう
な鋼線スクリーンにおいて、鋼線に極めてコンパ
クトな張力発生部を継ぎ、安定的な精度維持と、
鋼線を稠密に張る構造を提供することを目的とす
る。(Problems to be solved by the invention) The invention aims at maintaining stable precision by joining an extremely compact tension generating part to the steel wire in steel wire screens such as moire gratings and vibrating screens.
The purpose is to provide a structure in which steel wires are densely stretched.
（問題点を解決するための手段）
本考案はこのような問題点を有利に解決するた
め、枠体と該枠体に張設された複数本の鋼線から
構成される鋼線スクリーンにおいて、前記枠体に
張設する鋼線の他端に、予め直線形状記憶処理し
伸線加工した形状記憶合金の一端を連結し、該形
状記憶合金の他端側を枠体に固定してなる鋼線ス
クリーンの張力発生構造に関する。(Means for Solving the Problems) In order to advantageously solve these problems, the present invention provides a steel wire screen consisting of a frame and a plurality of steel wires stretched over the frame. A steel made by connecting one end of a shape memory alloy that has been subjected to linear shape memory treatment and wire drawing to the other end of the steel wire stretched across the frame, and fixing the other end of the shape memory alloy to the frame. Concerning the tension generating structure of line screens.
以下図面に基づいて本考案の実施例を説明す
る。 Embodiments of the present invention will be described below based on the drawings.
（実施例 １）
第１図は本考案による張力発生機構の１例であ
り、張力発生のために、形状記憶合金線５を鋼線
１に連結し、枠体支持部８ａ，８ｂ間に鋼線１を
張設したものである。形状記憶合金線５は、あら
かじめ直線形状記憶処理を行う。(Example 1) Fig. 1 shows an example of a tension generation mechanism according to the present invention. In order to generate tension, a shape memory alloy wire 5 is connected to a steel wire 1, and a steel wire is connected between frame support parts 8a and 8b. Line 1 is stretched. The shape memory alloy wire 5 is subjected to a linear shape memory treatment in advance.
この線５を、望ましくは組み込み前に伸線加工
し、加熱により収縮するような長さにしておき、
両端をグリツプ６ａ，６ｂまたはロウ付けなどの
方法で、鋼線１および枠体支持部８ａ，８ｂに固
定する。形状記憶合金線５の長さおよび伸縮加工
長さは、必要な張力により決定されるものであ
る。むろん全線にわたつて、伸線加工した形状記
憶合金を使用してもよい。 Preferably, the wire 5 is drawn before assembly to a length that will shrink when heated.
Both ends are fixed to the steel wire 1 and the frame supports 8a, 8b using grips 6a, 6b or brazing. The length and stretching length of the shape memory alloy wire 5 are determined by the required tension. Of course, a wire-drawn shape memory alloy may be used over the entire wire.
（実施例 ２）
第２図に鋼板形状測定用モアレ格子の側面図を
示す。該格子は、枠体１１と枠体１１に設けられ
たネジ１２ａ，１２ｂ間に、鋼線１を張設してス
クリーンを形成している。鋼線１の一端は、支持
部１３ｂに固定され、他端は予め伸線加工した形
状記憶合金線５に連結されて、支持部１３ａに連
結されている。この形状記憶合金線５からなる張
力発生機構の詳細を、第３図に拡大して示す。(Example 2) FIG. 2 shows a side view of a moiré grid for measuring the shape of a steel plate. The lattice has a steel wire 1 stretched between a frame 11 and screws 12a and 12b provided on the frame 11 to form a screen. One end of the steel wire 1 is fixed to the support part 13b, and the other end is connected to a shape memory alloy wire 5 drawn in advance and connected to the support part 13a. The details of the tension generating mechanism made of the shape memory alloy wire 5 are shown in an enlarged scale in FIG.
すなわち、鋼線１はネジ１２ａに支持され、グ
リツプ６ａを介して一端が形状記憶合金線５に連
結され、該線５の他端はグリツプ６ｂを介して、
支持部１３ａに連結されている。１４はグリツプ
６ａ，６ｂ間に配置されたターンバツクルで、形
状記憶合金線５の伸線加工および過負荷防止用で
ある。このような張力発生機構は、鋼線１本に１
個設けても良いが、鋼線数本をまとめて１個設け
ることも可能である。 That is, the steel wire 1 is supported by the screw 12a, one end is connected to the shape memory alloy wire 5 via the grip 6a, and the other end of the wire 5 is connected to the shape memory alloy wire 5 via the grip 6b.
It is connected to the support part 13a. A turnbuckle 14 is arranged between the grips 6a and 6b, and is used for drawing the shape memory alloy wire 5 and for preventing overload. This kind of tension generation mechanism is applied to one steel wire.
However, it is also possible to provide several steel wires together.
しかして形状記憶合金としては、例えばNi‐
Ti合金の引張強さ60Kg／mm2以上のもの、線径
2.0φ程度のものが好適である。張力発生は、形状
記憶合金の復帰力によつて得られ、Ni‐Ti合金
の場合加熱することにより、約60Kg／mm2程度が得
られる。また熱間でスクリーンを使用する場合に
は、あらかじめ熱間での鋼線の線膨張分を伸線加
工しておくことにより、熱間で自動的に縮み、張
力を一定に保つことも可能である。特に高温雰囲
気となる場合には、張力発生部の温度制御を行う
と、形状記憶合金の保護のために好都合である。 However, as a shape memory alloy, for example, Ni-
Ti alloy tensile strength 60Kg/ mm2 or more, wire diameter
A diameter of about 2.0φ is suitable. Tension is generated by the restoring force of the shape memory alloy, and in the case of Ni-Ti alloy, approximately 60 kg/mm 2 can be obtained by heating. In addition, when using a screen in hot conditions, by drawing the linear expansion of the steel wire in advance, it is possible to automatically shrink in hot conditions and maintain a constant tension. be. Particularly in the case of a high-temperature atmosphere, it is advantageous to control the temperature of the tension-generating part in order to protect the shape memory alloy.
（考案の効果）
このように本考案によれば、使用による鋼線の
伸びまたは熱による鋼線の線膨張など、鋼線のた
るみをバネに比して安定して吸収することができ
る。そして張力発生物が線材であるため、バネに
比して占有空間を狭くなしうるので、モアレ格子
や振動篩のスクリーンを、高精度にかつ稠密に形
成することができる。(Effects of the invention) As described above, according to the invention, slack in the steel wire, such as elongation of the steel wire due to use or linear expansion of the steel wire due to heat, can be absorbed more stably than with a spring. Since the tension generator is a wire rod, it can occupy a narrower space than a spring, so it is possible to form moiré gratings and vibrating sieve screens with high precision and density.
第１図〜第３図は本考案実施例を示し、第１図
は張力発生機構を枠体内に配置した例を示す平面
図、第２図は鋼板形状測定用モアレ格子に、本考
案の張力発生機構を組込んだ側面説明図、第３図
は第２図の張力発生機構の詳細拡大図、第４図は
従来のスクリーンの構成を示す平面図、第５図は
従来スクリーンの鋼線のたるみを示す説明図であ
る。
１……鋼線、２……枠体、５……形状記憶合
金、６……グリツプ。
Figures 1 to 3 show examples of the present invention. Figure 1 is a plan view showing an example in which the tension generation mechanism is arranged inside the frame, and Figure 2 shows the tension generation mechanism of the present invention applied to a moiré grid for measuring the shape of a steel plate. Fig. 3 is a detailed enlarged view of the tension generation mechanism in Fig. 2, Fig. 4 is a plan view showing the structure of a conventional screen, and Fig. 5 is a diagram of the steel wire of the conventional screen. It is an explanatory view showing sagging. 1... Steel wire, 2... Frame, 5... Shape memory alloy, 6... Grip.
Claims (1)
成される鋼線スクリーンにおいて、前記枠体に張
設する鋼線の他端に、予め直線形状記憶処理し伸
線加工した形状記憶合金の一端を連結し、該形状
記憶合金の他端側を、枠体に固定してなる鋼線ス
クリーンの張力発生構造。 In a steel wire screen composed of a frame and a plurality of steel wires stretched on the frame, the other end of the steel wire stretched on the frame has a shape that has been subjected to linear shape memory treatment and wire drawing in advance. A steel wire screen tension generating structure in which one end of a memory alloy is connected and the other end of the shape memory alloy is fixed to a frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985111976U JPH0330812Y2 (en) | 1985-07-23 | 1985-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985111976U JPH0330812Y2 (en) | 1985-07-23 | 1985-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6220309U JPS6220309U (en) | 1987-02-06 |
| JPH0330812Y2 true JPH0330812Y2 (en) | 1991-06-28 |
Family
ID=30992409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985111976U Expired JPH0330812Y2 (en) | 1985-07-23 | 1985-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330812Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124882Y2 (en) * | 1980-02-28 | 1986-07-26 | ||
| JPH0752547B2 (en) * | 1987-06-26 | 1995-06-05 | 松下電器産業株式会社 | Floppy disk device |
-
1985
- 1985-07-23 JP JP1985111976U patent/JPH0330812Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6220309U (en) | 1987-02-06 |
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