JPH0739567Y2 - Concrete surface plate - Google Patents
Concrete surface plateInfo
- Publication number
- JPH0739567Y2 JPH0739567Y2 JP1989070427U JP7042789U JPH0739567Y2 JP H0739567 Y2 JPH0739567 Y2 JP H0739567Y2 JP 1989070427 U JP1989070427 U JP 1989070427U JP 7042789 U JP7042789 U JP 7042789U JP H0739567 Y2 JPH0739567 Y2 JP H0739567Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- surface plate
- concrete
- plate
- mesh
- 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
- 239000002184 metal Substances 0.000 claims description 57
- 229910052751 metal Inorganic materials 0.000 claims description 57
- 229910021487 silica fume Inorganic materials 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Panels For Use In Building Construction (AREA)
- Laminated Bodies (AREA)
- Installation Of Indoor Wiring (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、工作物の心だし，けがき，測定，すり合せ等
各種作業に使用するための基準平面を備えた定盤、特
に、高周波により測定を行う検査装置に使用して最適な
コンクリート製定盤に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a surface plate provided with a reference plane for use in various operations such as centering, marking, measuring, and grinding of a workpiece, especially a high-frequency plate. The present invention relates to a concrete surface plate that is most suitable for use in an inspection device that performs measurement.
従来、この種定盤には鋳鉄製と石製の二種類があり、使
用面の平面度により、０級,1級及び２級の三等級とし、
改正JIS規格ではこれらを精密定盤と称している。そし
て、鋳鉄製定盤の材料としては、JIS G 5501（ねずみ鋳
鉄品）のFC 20又はこれと同等以上とし、組織が均一
で、巣，ピンホール，割れ等の有害な欠陥がないこと、
及び内部応力を除くために必要な熱処理又は自然枯らし
をしなければならないなどの定めがある。Conventionally, there are two types of this type surface plate made of cast iron and stone, depending on the flatness of the used surface, there are three grades of 0 grade, 1 grade and 2 grade,
In the revised JIS standard, these are called precision surface plates. And, as the material of the cast iron surface plate, JIS G 5501 (gray cast iron product) FC 20 or equivalent or more, with a uniform structure and no harmful defects such as cavities, pinholes, cracks,
Also, there is a provision that heat treatment or natural mortality necessary for removing internal stress must be performed.
また、石製定盤の材料としては、はん（班）れい岩又は
これ以上の石材とし、組織が均一で，有害な脈理，割れ
等の欠点がないこと等の規定があり、従来は上記のよう
な諸条件を満たす鋳鉄製又は石製の定盤を使用してい
る。In addition, as the material of the stone surface plate, there are provisions such as gangue (rock) gemstone or more stone material, the structure is uniform, and there are no defects such as harmful striae and cracks. A cast iron or stone surface plate that satisfies various conditions such as is used.
〔考案が解決しようとする問題点〕 一般に、この種の定盤に要求される特性としては、剛性
（たわみ強度），耐摩耗性，精度（平面度，直角度，平
行度）等があり、その他、耐酸性及び熱による影響（熱
膨張等）を受け難いこと等が挙げられるが、従来の鋳鉄
製定盤は、機械的性質には優れているが耐摩耗性の点で
劣り、また熱伝導率が高いので熱変形が起こり易いとゝ
もに、価格が高いといった問題点がある。これに対し、
石製定盤は、鋳鉄より二倍以上硬く耐摩耗性がはるかに
高いこと、温度の影響を受けず安定しており熱変形が起
こりにくいといった特性をもっているが、鋳鉄に比較し
て機械的強度（剛性）が劣り、精度が得にくいといった
欠点がある。[Problems to be solved by the invention] Generally, characteristics required for this type of surface plate include rigidity (flexural strength), wear resistance, accuracy (flatness, squareness, parallelism), and the like. Other factors include acid resistance and resistance to heat (expansion, etc.). Conventional cast iron surface plates have excellent mechanical properties, but are inferior in wear resistance, and also have thermal conductivity. Since the rate is high, thermal deformation is likely to occur, and the price is high. In contrast,
The stone surface plate is more than twice as hard as cast iron and has much higher wear resistance, and has the characteristics that it is stable without being affected by temperature and is less likely to undergo thermal deformation. It has the disadvantages of poor rigidity and difficulty in obtaining precision.
また、定盤を、電磁波関連の測定を行う検査装置等の載
置台として使用する場合、電磁シールド機能を備えてい
ることが望ましいが、上記のような従来の鋳鉄製定盤や
石製定盤では電磁シールド機能を備えることは困難であ
り、定盤として用途が限定されるといった諸問題点があ
る。Further, when the surface plate is used as a mounting table for an inspection device or the like that performs electromagnetic wave related measurement, it is desirable to have an electromagnetic shield function, but in the conventional cast iron surface plate or stone surface plate as described above, It is difficult to provide a shield function, and there are various problems that the use as a surface plate is limited.
本考案は、上記のような従来の諸問題点を解決するため
になされたもので、定盤として要求される前記の諸特性
を備えているとゝもに、内部に電磁シールド機能を備
え、且つ全体が一体構造としたものを提供することを目
的としたものであり、その要旨は、シリカヒューム混入
のコンクリート製基盤内に、金属網からなる導電体と、
該導電体に下端が接続され上端が前記コンクリート製基
盤の上面に開口する金属製ブッシュを夫々埋設するとゝ
もに、前記コンクリート製基盤の上面に載置した金属製
のベース盤と接地線の一端とを、夫々前記金属製ブッシ
ュにねじ込んだ金属製ボルトにより固定することを特徴
としたコンクリート製定盤にある。The present invention has been made in order to solve the above-mentioned conventional problems, and has the above-mentioned various characteristics required as a surface plate, and also has an electromagnetic shield function inside, And the purpose is to provide an integrated structure as a whole, the gist of which is a conductor made of a metal net in a concrete base mixed with silica fume,
By embedding metal bushes whose lower ends are connected to the conductors and whose upper ends are open on the upper surface of the concrete base, respectively, the metal base plate placed on the upper surface of the concrete base and one end of the ground wire are also embedded. Are fixed by metal bolts screwed into the metal bushes, respectively.
以下、本考案を図面に示す実施例に基づき詳細に説明す
るに、図中１は本考案に係るコンクリート製定盤で、そ
の上部に基準平面1aを備えており、該基準平面1aの大き
さは測定装置等を載置できる面積を備え、且つ定盤の厚
さは測定装置等を支持するに必要な寸法としている。２
は前記定盤１を形成するコンクリートで、後述するよう
に、セメントにシリカヒュームが混入されていて十分な
強度を備えているため、定盤１の厚さは従来の定盤より
薄く形成されている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. In FIG. It has an area where the measuring device and the like can be placed, and the thickness of the surface plate is set to a dimension necessary to support the measuring device and the like. Two
Is a concrete forming the surface plate 1, and as will be described later, since silica fume is mixed in the cement and has sufficient strength, the thickness of the surface plate 1 is smaller than that of the conventional surface plate. There is.
すなわち、前記定盤１は、セメントにシリカヒュームを
混入したコンクリートによって形成したものであり、そ
の配合例は表１及び表２に示す通りである。That is, the surface plate 1 is made of concrete in which silica fume is mixed in cement, and examples of its mixing are shown in Tables 1 and 2.
そして、配合例１の場合、その圧縮強度は約1200Kg/cm2
で、配合例２の場合の圧縮強度は約1000Kg/cm2であり、
普通コンクリートで形成した場合の平均圧縮強度659Kg/
cm2に比較して大幅な増強が図られる。これは、セメン
トに微粒子のシリカヒュームが細密，且つ均一に充填さ
れて密実となるため、高強度で耐摩耗性の高いものとな
ったものであり、しかも熱伝導率が鋳鉄に比べて小さ
く、熱変形が起こりにくいといった効果を期待すること
ができる。 And, in the case of formulation example 1, the compressive strength is about 1200 kg / cm 2
Then, the compressive strength in the case of formulation example 2 is about 1000 kg / cm 2 ,
Average compressive strength 659 Kg / when formed from ordinary concrete
Significant enhancement is achieved compared to cm 2 . This is because cement is finely and uniformly filled with fine particles of silica fume to be solid, and thus has high strength and high wear resistance, and has a smaller thermal conductivity than cast iron. It is possible to expect an effect that thermal deformation does not easily occur.
３は電磁シールド用の金属網で、銅など導電性の良好な
金属板を加工して形成したものであり、後述する方法に
より、前記定盤１の内部上方にあって、水平に且つ全面
に張設されている。４は機器取付け用及び電磁シールド
用の金属製ブッシュで、内周に雌ねじを切った有底円筒
形状のものであり、定盤１の必要な個所に埋設されてい
る。Reference numeral 3 denotes a metal net for electromagnetic shielding, which is formed by processing a metal plate having good conductivity such as copper. It is above the surface plate 1 and is horizontally and entirely formed by a method described later. It is stretched. Reference numeral 4 denotes a metal bush for mounting equipment and for electromagnetic shielding, which has a bottomed cylindrical shape with an internal thread on the inner periphery, and is embedded in a required portion of the surface plate 1.
この金属製ブッシュ４は、前記金属網３と同様に、定盤
１の成形時にシリカヒューム混入のコンクリート２内に
埋設したもので、その下端4aは前記金属網３と接続され
ており、上端の開口部4bは前記基準平面1aに開口してい
る。なお、前記金属網３と金属製ブッシュ４の下端4aと
の接触を確実にするために、ろう付又は溶接等を施して
いる。Similar to the metal net 3, the metal bush 4 is embedded in the concrete 2 mixed with silica fume when the surface plate 1 is molded, and the lower end 4a thereof is connected to the metal net 3 and The opening 4b opens to the reference plane 1a. In order to ensure the contact between the metal net 3 and the lower end 4a of the metal bush 4, brazing, welding or the like is performed.
５は金属製のベース盤で、金属製ボルト６を前記金属製
ブッシュ４にねじこんで定盤１上に固定されており、そ
の上に検査装置等Ａを載置する。ただし、このベース盤
５は、定盤１の基準平面1aが高精度に形成されている場
合は必要でなく、この場合には検査装置等Ａを定盤１上
に直接載置する。７は外部に対する接地線で、金属製ボ
ルト８により前記金属製ブッシュ４に固定されており、
金属網３と接触した金属製ブッシュ４により、前記各ベ
ース盤５に対する接地配線が達成される。Reference numeral 5 denotes a metal base plate, which is fixed on the surface plate 1 by screwing a metal bolt 6 into the metal bush 4 and mounting an inspection device A or the like on it. However, the base plate 5 is not necessary when the reference plane 1a of the surface plate 1 is formed with high accuracy, and in this case, the inspection device A or the like is directly placed on the surface plate 1. Reference numeral 7 denotes a ground wire for the outside, which is fixed to the metal bush 4 by a metal bolt 8.
The metal bushing 4 in contact with the metal net 3 achieves ground wiring for each of the base boards 5.
次に、本考案に係るコンクリート製定盤１の製造方法の
一例を第２図に基づき説明すると、先ず適当な材料を用
いて定盤成形用の型枠９を作り、該型枠９の底板9a上に
配列板10を敷き、この配列板10上に開口部4bを下方に向
けて金属製ブッシュ４を配置する。この金属製ブッシュ
４の配置位置は、前記ベース盤５の取り付け孔に一致さ
せておくことは勿論である。そして、金属製ブッシュ４
の上、すなわちその下端4aに金属網３を接触させて水平
に載置し、必要に応じて、金属網３と金属製ブッシュ４
の下端4aをろう付又は溶接などにより固定する。Next, an example of a method of manufacturing the concrete surface plate 1 according to the present invention will be described with reference to FIG. 2. First, a mold 9 for forming the surface plate is made of an appropriate material, and a bottom plate 9a of the frame 9 is formed. The array plate 10 is laid on the metal plate 4, and the metal bush 4 is arranged on the array plate 10 with the opening 4b facing downward. Needless to say, the arrangement position of the metal bush 4 is made to coincide with the mounting hole of the base board 5. And the metal bush 4
The metal net 3 is brought into contact with the upper part, that is, the lower end 4a of the metal net 3 and placed horizontally.
The lower end 4a of the is fixed by brazing or welding.
次に、型枠９内にシリカヒューム混入のコンクリート２
を所定高さまで流し込むが、このコンクリート２は金属
網３の網目3aを通って前記配列板10迄充填される。そし
て、必要に応じて、上方から押し板11を押し当ててコン
クリート２の熟成を待ち、一定時間経過後コンクリート
２が硬化すると、内部に埋設した金属網３及び金属製ブ
ッシュ４とコンクリート２とが一体となった定盤１の原
型が形成される。すなわち、金属網３を境にして、その
上下のコンクリート２の層は金属網３の網目3aの部分で
連通しており、且つ金属網３とコンクリート２との付着
性がよいため、全体として一体構造のものとなる。Next, the concrete 2 containing silica fume in the formwork 9
Is poured to a predetermined height, and the concrete 2 is filled up to the array plate 10 through the mesh 3a of the metal mesh 3. Then, if necessary, the pressing plate 11 is pressed from above to wait for the concrete 2 to age, and when the concrete 2 hardens after a certain period of time, the metal net 3 and the metal bush 4 embedded inside and the concrete 2 are separated. A prototype of the integrated surface plate 1 is formed. That is, with the metal mesh 3 as a boundary, the layers of the concrete 2 above and below the metal mesh 3 communicate with each other at the mesh 3a of the metal mesh 3, and since the metal mesh 3 and the concrete 2 have good adhesion, they are integrally formed as a whole. Be of structure.
コンクリートが硬化した後、定盤１の原型を型枠９より
取り出し、その上部表面に仕上げ加工を施す。すなわ
ち、第２図において、配列板10と接触する面が定盤１の
上部表面となるので、この表面2aと内部に埋設されてい
る金属製ブッシュ４の開口部4bの開口端とを共研磨仕上
げして平滑な基準平面1aとする。なお、シリカヒューム
混入のコンクリート２には良好な研磨性があるため、検
査装置用等として用いるのに十分な精度の高い平滑面が
得られる。After the concrete is hardened, the prototype of the surface plate 1 is taken out of the mold 9, and the upper surface of the mold is finished. That is, in FIG. 2, since the surface that contacts the array plate 10 is the upper surface of the surface plate 1, this surface 2a and the opening end of the opening 4b of the metal bush 4 embedded inside are co-polished. Finish and make a smooth reference plane 1a. Since the concrete 2 mixed with silica fume has a good polishing property, it is possible to obtain a smooth surface with a sufficiently high accuracy for use as an inspection device or the like.
つぎに、本考案に係る定盤の使用状態を第３図に基づき
説明すると、定盤１の基準平面1a上に複数個の金属製の
ベース盤５を夫々、前記したように、金属製ボルト６を
金属製ブッシュ４にねじ込んで正確に位置決めして固定
し、前記ベース盤５上に検査装置Ａを載置する。そし
て、接地線７の一端も同様にして金属製ブッシュ４に金
属製ボルト８で固定する。したがって、定盤１は電磁シ
ールド機能を有するため、電磁波関連の測定等に使用し
た場合でも、悪影響を及ぼすことがない。Next, the use state of the surface plate according to the present invention will be described with reference to FIG. 3. A plurality of metal base plates 5 are provided on the reference plane 1a of the surface plate 1 as described above. 6 is screwed into the metal bush 4 to be accurately positioned and fixed, and the inspection device A is placed on the base board 5. Then, one end of the ground wire 7 is similarly fixed to the metal bush 4 with the metal bolt 8. Therefore, since the surface plate 1 has an electromagnetic shield function, it does not have a bad influence even when it is used for measurement related to electromagnetic waves.
本考案に係るコンクリート製定盤は、上述のように、シ
リカヒューム混入のコンクリート製基盤内に、金属網か
らなる導電体と、該導電体に下端が接続され上端が前記
コンクリート製基盤の上面に開口する金属製ブッシュを
夫々埋設するとゝもに、前記コンクリート製基盤の上面
に載置した金属製のベース盤と接地線の一端とを、夫々
前記金属製ブッシュにねじ込んだ金属製ボルトにより固
定する構成であるから、（１）高強度で且つ精度の高い
平滑表面のものを得ることができる。（２）成形時にお
いて、電磁シールド用の金属網の上から打設したコンク
リートは、金属網の網目の部分を通ってその下部に流動
するため、製造が簡単である。（３）金属網とコンクリ
ートとは付着性が良く、しかも金属網を境にしてその上
下のコンクリートの層は金属網の網目の部分で連続して
いるため、全体として一体構造のものとなり耐久性が向
上する、といった諸効果がある。As described above, the concrete surface plate according to the present invention has a conductor made of a metal mesh and a lower end connected to the conductor and an upper end opened on the upper surface of the concrete base in a concrete base mixed with silica fume. When the metal bushes are embedded, the metal base board placed on the upper surface of the concrete base and one end of the ground wire are fixed by metal bolts screwed into the metal bushes. Therefore, (1) a smooth surface having high strength and high precision can be obtained. (2) At the time of molding, concrete cast from above the metal net for electromagnetic shielding flows through the mesh part of the metal net to the lower part thereof, so that the production is simple. (3) The metal mesh and the concrete have good adhesion, and the concrete layers above and below the metal mesh are continuous at the mesh portion of the metal mesh, so the overall structure is one and durable. There are various effects such as improvement of.
第１図の（Ａ）は本考案に係るコンクリート製定盤の縦
断面図、同図の（Ｂ）は同定盤内に埋設する金属網の一
部省略平面図、第２図は同定盤の製造方法を示す断面説
明図、第３図は同定盤の使用状態を示す説明図である。 １……コンクリート製定盤、1a……基準平面、２……コ
ンクリート、３……金属網、3a……網目、４……金属製
ブッシュ、4a……同下端、4b……同上端の開口部、５…
…ベース盤、6,8……金属製ボルト、７……接地線。FIG. 1 (A) is a vertical cross-sectional view of a concrete surface plate according to the present invention, FIG. 1 (B) is a partially omitted plan view of a metal net embedded in the identification plate, and FIG. 2 is production of the identification plate. FIG. 3 is a cross-sectional explanatory view showing the method, and FIG. 3 is an explanatory view showing a usage state of the identification board. 1 ... concrete surface plate, 1a ... reference plane, 2 ... concrete, 3 ... metal mesh, 3a ... mesh, 4 ... metal bush, 4a ... same lower end, 4b ... same upper opening 5 ...
… Base panel, 6, 8… Metal bolts, 7… Ground wire.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 斉藤 清 山形県酒田市上本町６番７号 前田製管株 式会社内 (56)参考文献 実開 昭64−38271（ＪＰ，Ｕ) 実公 昭61−38357（ＪＰ，Ｙ２) 実公 昭64−308（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Seito Kiyo, 6-7 Uehonmachi, Sakata City, Yamagata Prefecture Maeda Pipeline Co., Ltd. (56) References 61-38357 (JP, Y2) S.K. 64-308 (JP, Y2)
Claims (1)
内に、金属網からなる導電体と、該導電体に下端が接続
され上端が前記コンクリート製基盤の上面に開口する金
属製ブッシュを夫々埋設するとゝもに、前記コンクリー
ト製基盤の上面に載置した金属製のベース盤と接地線の
一端とを、夫々前記金属製ブッシュにねじ込んだ金属製
ボルトにより固定することを特徴としたコンクリート製
定盤。1. A conductor consisting of a metal net and a metal bush whose lower end is connected to the conductor and whose upper end is open to the upper surface of the concrete base are embedded in a concrete base mixed with silica fume. A concrete surface plate characterized in that a metal base plate placed on the upper surface of the concrete base plate and one end of the ground wire are fixed by metal bolts respectively screwed into the metal bushes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989070427U JPH0739567Y2 (en) | 1989-06-16 | 1989-06-16 | Concrete surface plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989070427U JPH0739567Y2 (en) | 1989-06-16 | 1989-06-16 | Concrete surface plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0311577U JPH0311577U (en) | 1991-02-05 |
| JPH0739567Y2 true JPH0739567Y2 (en) | 1995-09-13 |
Family
ID=31606578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989070427U Expired - Lifetime JPH0739567Y2 (en) | 1989-06-16 | 1989-06-16 | Concrete surface plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0739567Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6138357U (en) * | 1984-08-11 | 1986-03-10 | ヤンマー農機株式会社 | Continuously variable speed structure of management machine |
| JPS64308U (en) * | 1987-06-18 | 1989-01-05 | ||
| JPS6438271U (en) * | 1987-09-01 | 1989-03-07 |
-
1989
- 1989-06-16 JP JP1989070427U patent/JPH0739567Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0311577U (en) | 1991-02-05 |
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