JP2004001145A - Rotary polishing tool - Google Patents

Rotary polishing tool Download PDF

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Publication number
JP2004001145A
JP2004001145A JP2002160577A JP2002160577A JP2004001145A JP 2004001145 A JP2004001145 A JP 2004001145A JP 2002160577 A JP2002160577 A JP 2002160577A JP 2002160577 A JP2002160577 A JP 2002160577A JP 2004001145 A JP2004001145 A JP 2004001145A
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JP
Japan
Prior art keywords
polishing
cloth
polished
axial direction
paper
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.)
Pending
Application number
JP2002160577A
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Japanese (ja)
Inventor
Naomi Nishiki
西木 直美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyo Shokai Co Ltd
Original Assignee
Taiyo Shokai Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taiyo Shokai Co Ltd filed Critical Taiyo Shokai Co Ltd
Priority to JP2002160577A priority Critical patent/JP2004001145A/en
Priority to PCT/JP2003/006718 priority patent/WO2003101670A1/en
Priority to AU2003235458A priority patent/AU2003235458A1/en
Publication of JP2004001145A publication Critical patent/JP2004001145A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/08Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising annular or circular sheets packed side by side

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary polishing tool capable of finishing a surface to be polished to desired surface roughness. <P>SOLUTION: Plural sheets of substantially circular abrasive cloth and paper 7 are superimposed to make a substantially cylindrical shaped polishing member 3. A peripheral edge of each abrasive cloth and paper 7 is formed into a meandering shape reciprocating in a shaft direction of a center shaft. A developing shape of an outer edge of each abrasive cloth and paper 7 becomes a substantially sigmoid curve. By rotating the polishing member 3, an object to be polished is polished by the peripheral surface. Since an outer edge of each abrasive cloth and paper 7 performs polishing, while moving in the shaft direction, the peripheral edge of the abrasive cloth and paper 7 hits on all of a polishing surface. Each inter-abrasive cloth and paper 7 can be polished and the surface to be polished is finished to the desired surface roughness. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、例えば鋼鈑表面のスケール及び傷の除去に好適な回転研磨具に関するものである。
【0002】
【従来の技術】
一般に、鋼鈑表面のスケールは、鋼鈑に表面研磨を施すことにより除去されている。この表面研磨は、鋼鈑の後加工のための重要な工程であり、例えば、石油タンクのタンク壁を形成するために研磨後の鋼鈑にベンデング加工(曲げ加工)を施す際、被研磨面に供給鋼鈑の表面の傷がそのまま残っていると、曲げ応力により鋼鈑が破断する可能性がある。そのため、表面研磨は、被研磨面に傷が残らない状態に仕上げる必要がある。また、通常、被研磨面には表面保護のための塗膜を施すが、その被研磨面は塗膜形成に適した表面粗度でなければならない。
【0003】
この種の被研磨面を形成するための一つの手段として、円板状の研磨布紙を多数枚重ねて円柱状の研磨部材とし、この研磨部材をその中心軸周りに回転させて、その周面、つまり各研磨布紙の周縁で被研磨面を研磨する回転研磨具が採用されてきている。
【0004】
【発明が解決しようとする課題】
ところが、上記の回転研磨具の研磨部材は、平板状の研磨布紙を多数枚重ねただけの構造であるため、微視的にみれば、被研磨面が各研磨布紙の周縁において研磨されるだけで、研磨布紙間では研磨されない。したがって、出来上がりの被研磨面には各研磨布紙の周縁の当たりによる多数の筋状の凹凸が存在することになり、所望の表面粗度が得られないという問題があった。
【0005】
本発明は、上記課題を解決して、被研磨面を所望の表面粗度に仕上げることができる回転研磨具を提供することを目的としている。
【0006】
【課題を解決するための手段】
上記課題に鑑み、本発明は、研磨布紙の周縁を蛇行状に形成し、その展開形状が略S字曲線になるようにして、研磨布紙の周縁が研磨面の全てに当たるように設定することで、各研磨布紙間をも研磨可能にして、被研磨面を所望の表面粗度に仕上げるようにしたものである。
【0007】
すなわち、本発明は、略円柱状の研磨部材をその中心軸の周りに回転自在に支持し、この研磨部材を回転させてその周面で被研磨物を研磨することを前提として、その研磨部材を複数枚の略円形の研磨布紙が中心軸の軸方向に重合された構造とし、その研磨布紙の周縁を中心軸の軸方向に往復する蛇行状とするものである。
【0008】
研磨部材は、研磨布紙を複数枚重合してなる研磨ユニットを中心軸の軸方向に重合した構造を採用するのが好適である。この研磨ユニットは、その各研磨布紙の中央部に形成した軸挿通用の開口にリング状の内金具を挿通し、この内金具により複数枚の研磨布紙を重合状態で挟圧保持する。そうすれば、要求される研磨幅に応じて、所望の数の研磨ユニットを軸方向に重合させるだけで、研磨部材を簡単に組み立てることができる。
【0009】
前記各研磨布紙の周縁を蛇行状に形成する手法としては、研磨布紙を予め片付けして形成する以外にも種々の方法が採用できる。特に、前述の内金具を使用する場合は、研磨ユニットの内金具の一部を中心軸の軸方向に押圧して、その研磨布紙の周縁を蛇行状に形付けすることができる。また、研磨布紙としては、紙、布、不織布等種々の基材と種々の粒度及び素材からなる砥粒とを適用することができるが、網状の基材に砥粒を塗膜形成したものを用いれば、基材に付着する砥粒の量を多くすることができ、その分、研磨時の加圧力を小さくすることができる。
【0010】
【発明の実施の形態】
以下、本発明に係る回転研磨具の実施の形態について、図面を用いて説明する。図1(a)は本発明の回転研磨具の正面図、(b)はその平面図、(c)はその側面図である。図2は回転研磨具の分解斜視図である。
【0011】
本実施形態の回転研磨具は、自動研磨装置及び手押しの研磨装置のいずれにも適用できるが、説明の都合上、手押しの研磨装置について説明する。回転研磨具1は、図1及び図2に示すように、駆動源によって駆動される回転軸を挿通可能なホイール軸2と、ホイール軸2の外周側に保持される略円柱状の研磨部材3と、研磨部材3を軸方向に挟むようにホイール軸2の両端部に固定される一対のリング状のフランジ4とを備えている。
【0012】
ホイール軸2は、例えば鋼製の円筒状とされ、その両端部の外周面に、C形の止め輪5を嵌め込んでフランジ4の抜け出しを阻止するための周方向に連続する溝が形成されている。このホイール軸2の両端部内周側には、回転軸が貫通する軸受けが形成された円板状のサポートプレート6が嵌合される。
【0013】
研磨部材3は、多数枚の研磨布紙7を軸方向に配列してなるものであり、各研磨布紙7は、紙、布、ネットなどの基紙の表面にアルミナや炭化ケイ素等の砥粒が塗膜形成されたもので、例えば、理研コランダム社製のものや、三共理化学社製のものが例示できる。この研磨布紙7は、ホイール軸2に嵌合できるように中央部に開口7aを有するリング状に形成されている。
【0014】
図3はフランジの外周面の展開図である。この図に示すように、フランジ4の軸方向で両内側面は、円曲線を組み合わせて軸方向に所望の振幅をもつS字カーブが形成されている。本実施形態におけるS字カーブは、周期180度で、その振幅(ΔH=Hmax−Hmin)が7mm〜20mmのなだらかな曲線であり、周長(L)が373.66mmのとき、その頂点間の平均勾配(θ)が4°〜12°で、曲線半径(R)が114.08mm〜313.41mmである。このカーブに沿って研磨部材3を軸方向に押圧保持することにより、各研磨布紙7の外縁が蛇行状になるように設定している。
【0015】
本実施形態では、複数枚の研磨布紙7がその中央部開口7aに係着するリング状の内金具8によってユニット化され、この研磨ユニット9が複数個軸方向に配列されることで円柱状の研磨部材3を構成している。図4(a)は研磨ユニットの斜視図、(b)は側面図である。図5(a)は研磨ユニットの正面図、(b)はそのA−A断面図、(c)はそのB−B断面図である。
【0016】
図4及び図5に示すように、内金具8は、ホイール軸2に外嵌される円筒部8aと、その軸方向両側に折曲形成され研磨布紙7の中央部開口7aの周縁部を軸方向から押えるフランジ部8bとから構成されている。この内金具8は、フランジ4のS字カーブと同様な曲線を有する上下のプレス金型によって、その一部を軸方向に押圧することにより、研磨布紙7の外縁が蛇行状とされた研磨ユニット9が形成される。
【0017】
図6は研磨部材の外周面の展開図である。この図に示すように、研磨部材3の外周面は、その各研磨布紙7の外縁がS字カーブを形成し、その軸方向で外端側の頂点間の長さが研磨幅(b)とされ、その軸方向で内側の頂点間の長さが研磨有効幅(be)とされる。つまり、研磨有効幅(be)とは、被研磨面に対して研磨布紙7が連続的に当たる部分をいう。
【0018】
すなわち、研磨幅(b)のうち、研磨有効幅(be)の範囲におけるP1の位置では、各研磨布紙7の外縁が当たった後、隣接する研磨布紙7の外縁が続いて当たるため、被研磨面は、所定の研磨深さ(d)まで研磨される。研磨有効幅(be)の範囲外におけるP2の位置では、軸方向両端の研磨布紙7の外縁が当たった後、この研磨布紙7が再び当たるまで、研磨布紙7の外縁が当たらないので、P2における研磨深さは研磨有効幅(be)内の研磨深さ(d)よりも浅くなり、その研磨面の断面形状は、図7に示す略台形状になる。
【0019】
次に、上記構成における回転研磨具を使用して被研磨物を研磨したときの評価試験結果を示す。図8は、鋼鈑(高張力鋼)を被研磨物として、手押しの研磨装置を用いて研磨したときの被研磨面の粗さ曲線を示すものである。図8で、縦軸のスケールは、横軸のスケールの20倍に拡大して表している。表面粗さの測定は、Mitutoyo(ミツトヨ)社製の小形表面粗さ測定機(サーフテストSJ−301)を用いて、カットオフ値(λc)を8mm、測定速度を0.5m/sec、測定回数を1回として行った。
【0020】
図中の粗さパラメータのうち、Raは算術平均粗さ(平均線から測定曲線までの偏差の絶対値の平均値)、Ryは最大高さ(平均線から見て最も低い谷底から最も高い山頂までの高さ)、Rzは十点平均粗さ(平均線に平行な線から見て、高い方から5番目までの山頂の高さの平均値と、深い方から5番目までの谷底の深さの平均値との和)である。
【0021】
比較例は、網状の基材で粗さ番手が♯80の研磨布紙(MG♯80、三共理化学社製)を使用して、図3に示すフランジ4のS字カーブの蛇行幅(振幅)を0mmにした場合である。
【0022】
実施例1〜4は、網状の基材で粗さ番手が♯80の研磨布紙(MG♯80、三共理化学社製)を使用した場合で、そのフランジ4のS字カーブの蛇行幅(ΔH)、頂点間の平均勾配(θ)及び曲線半径(R)は、実施例1がΔH=7mm、θ=4°、R=313.41mmであり、実施例2がΔH=10mm、θ=7°、R=224.41mmであり、実施例3がΔH=15mm、θ=9°、R=149.19mmであり、実施例4がΔH=20mm、θ=12°、R=114.08mmである。
【0023】
実施例5は、紙製の基材で粗さ番手が♯60の研磨布紙(A64♯60、理研コランダム社製)を使用して、ΔH=15mm、θ=9°、R=149.19mmにした場合である。比較例及び実施例1〜5において、フランジ4の周長(L)は、373.66mmであり、研磨布紙7は、直径200mmの円形研磨布紙で、その周縁の蛇行カーブは、フランジ4のS字カーブに対応したものである。
【0024】
上記実験結果によると、比較例では、Ra=24.57μm、Ry=127.7μm、Rz=100.5μmであり、その粗さ曲線も凹凸のピーク値が大きい値になっている。実際の被研磨面を見ると縦方向に平行に多数の溝筋が現れていた。
【0025】
これに対し、実施例1〜4において、その粗さパラメータの全てが比較例よりも小さくなっており、被研磨面がなめらかに研磨され、実際の被研磨面を見ると、ほとんど溝筋は確認されなかった。これは、研磨部材3を回転させたとき、各研磨布紙7の外縁のうち、被研磨面に当たる部位が軸方向に周期的に移動して、被研磨面の全面に、各研磨布紙7の外縁と研磨布紙7間の隙間とが順に当たるため、被研磨面に筋状の凹凸が形成されないからであると考えられる。
【0026】
また、実施例5では、その粗さ番手を他の例よりも小さくしている。一般に、粗さ番手を小さくするとその粗さパラメータが大きくなるが、実施例5においても、その粗さパラメータの全てが比較例よりも小さくなっており、被研磨面がなめらかに研磨され、実際の被研磨面を見ると、ほとんど溝筋は確認されなかった。
【0027】
また、各実施例を比較すると、蛇行幅を15mmにしたとき(実施例3)に、その粗さパラメータが最も小さくなっており、これを基準に、蛇行幅を10mm〜20mmに設定するのが特に好適であることがわかる。
【0028】
【発明の効果】
以上の説明から明らかな通り、本発明によると、研磨布紙を重合させて略円柱状の研磨部材を構成し、各研磨布紙の外縁を蛇行状に形成するため、被研磨面に筋状の凹凸を生じさせることなく、所望の表面粗度に仕上げることができる。
【図面の簡単な説明】
【図1】(a)は本発明の回転研磨具の正面図、(b)はその平面図、(c)はその側面図
【図2】回転研磨具の分解斜視図
【図3】フランジの外周面の展開図
【図4】(a)は研磨ユニットの斜視図、(b)は側面図
【図5】(a)は研磨ユニットの正面図、(b)はそのA−A断面図、(c)はそのB−B断面図
【図6】研磨部材の外周面の展開図
【図7】研磨面の断面形状
【図8】被研磨面の粗さ曲線
【符号の説明】
1  回転研磨具
2  ホイール軸
3  研磨部材
4  フランジ
7  研磨布紙
8  内金具
9  研磨ユニット
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary polishing tool suitable for removing scale and scratches on a steel sheet surface, for example.
[0002]
[Prior art]
Generally, the scale on the steel plate surface is removed by subjecting the steel plate to surface polishing. This surface polishing is an important step for the post-processing of the steel plate. For example, when performing bending (bending) on the polished steel plate to form a tank wall of an oil tank, the surface to be polished is If the scratches on the surface of the supply steel sheet remain as they are, the steel sheet may be broken by bending stress. Therefore, in the surface polishing, it is necessary to finish the surface to be polished so that no scratch remains. Usually, a coating film for protecting the surface is applied to the surface to be polished, and the surface to be polished must have a surface roughness suitable for forming the coating film.
[0003]
As one means for forming this kind of surface to be polished, a large number of disk-shaped polishing cloths are stacked to form a columnar polishing member, and this polishing member is rotated around its central axis to form a peripheral member. 2. Description of the Related Art A rotary polishing tool for polishing a surface, that is, a surface to be polished at the periphery of each polishing cloth has been employed.
[0004]
[Problems to be solved by the invention]
However, since the polishing member of the rotary polishing tool has a structure in which a large number of flat polishing cloths are stacked, microscopically, the surface to be polished is polished at the peripheral edge of each polishing cloth. Is not polished between polishing cloths. Therefore, the finished surface to be polished has a large number of streaky irregularities due to the contact of the peripheral edge of each abrasive cloth, and there is a problem that a desired surface roughness cannot be obtained.
[0005]
An object of the present invention is to solve the above problems and to provide a rotary polishing tool that can finish a surface to be polished to a desired surface roughness.
[0006]
[Means for Solving the Problems]
In view of the above problems, the present invention sets the peripheral edge of the polishing cloth paper in a meandering shape, sets the developed shape to be a substantially S-shaped curve, and sets the peripheral edge of the polishing cloth paper to hit the entire polishing surface. In this way, it is possible to polish between the respective polishing cloths, so that the surface to be polished is finished to a desired surface roughness.
[0007]
That is, the present invention is based on the premise that a substantially cylindrical polishing member is rotatably supported around its central axis, and the polishing member is rotated to grind an object to be polished on its peripheral surface. Has a structure in which a plurality of substantially circular abrasive cloths are superimposed in the axial direction of the central axis, and the periphery of the abrasive cloth paper has a meandering shape reciprocating in the axial direction of the central axis.
[0008]
It is preferable that the polishing member employs a structure in which a plurality of polishing cloths are superposed in the axial direction of the central axis. In this polishing unit, a ring-shaped inner metal fitting is inserted into a shaft insertion opening formed at the center of each polishing cloth paper, and the plurality of polishing cloth papers are held in a superposed state by the inner metal fitting. Then, it is possible to easily assemble the polishing member simply by superposing the desired number of polishing units in the axial direction according to the required polishing width.
[0009]
As a method of forming the periphery of each of the polishing cloths in a meandering manner, various methods other than forming the polishing cloths by clearing them in advance can be adopted. In particular, when the above-mentioned inner metal fitting is used, a part of the inner metal fitting of the polishing unit can be pressed in the axial direction of the central axis to form the peripheral edge of the polishing cloth paper in a meandering shape. Further, as the abrasive cloth paper, various base materials such as paper, cloth, non-woven fabric and abrasive grains of various particle sizes and materials can be applied. By using, it is possible to increase the amount of abrasive particles attached to the base material, and accordingly, it is possible to reduce the pressing force during polishing.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a rotary polishing tool according to the present invention will be described with reference to the drawings. 1A is a front view of a rotary polishing tool of the present invention, FIG. 1B is a plan view thereof, and FIG. 1C is a side view thereof. FIG. 2 is an exploded perspective view of the rotary polishing tool.
[0011]
The rotary polishing tool of the present embodiment can be applied to both an automatic polishing device and a manual polishing device, but for convenience of explanation, a manual polishing device will be described. As shown in FIGS. 1 and 2, the rotary polishing tool 1 includes a wheel shaft 2 through which a rotary shaft driven by a driving source can be inserted, and a substantially cylindrical polishing member 3 held on the outer peripheral side of the wheel shaft 2. And a pair of ring-shaped flanges 4 fixed to both ends of the wheel shaft 2 so as to sandwich the polishing member 3 in the axial direction.
[0012]
The wheel shaft 2 has a cylindrical shape made of, for example, steel, and has circumferentially continuous grooves formed on outer peripheral surfaces of both ends thereof for fitting a C-shaped retaining ring 5 to prevent the flange 4 from coming off. ing. A disk-shaped support plate 6 having a bearing through which a rotating shaft passes is fitted on the inner peripheral side of both ends of the wheel shaft 2.
[0013]
The polishing member 3 is formed by arranging a large number of polishing cloth papers 7 in the axial direction. Each polishing cloth paper 7 is formed on a surface of a base paper such as paper, cloth, net or the like by polishing such as alumina or silicon carbide. The particles are formed with a coating film, and examples thereof include those manufactured by Riken Corundum and those manufactured by Sankyo Rikagaku. The polishing cloth 7 is formed in a ring shape having an opening 7a at the center so as to be fitted to the wheel shaft 2.
[0014]
FIG. 3 is a development view of the outer peripheral surface of the flange. As shown in this figure, an S-shaped curve having a desired amplitude in the axial direction is formed on both inner side surfaces in the axial direction of the flange 4 by combining circular curves. The S-shaped curve in the present embodiment is a gentle curve having a period of 180 degrees and an amplitude (ΔH = Hmax−Hmin) of 7 mm to 20 mm, and when the circumference (L) is 373.66 mm, a peak between the vertices is obtained. The average gradient (θ) is 4 ° to 12 °, and the curve radius (R) is 114.08 mm to 313.41 mm. By pressing and holding the polishing member 3 in the axial direction along this curve, the outer edge of each polishing cloth 7 is set so as to meander.
[0015]
In the present embodiment, a plurality of polishing cloths 7 are unitized by a ring-shaped inner metal fitting 8 engaged with a central opening 7a, and a plurality of polishing units 9 are arranged in the axial direction to form a cylindrical shape. Of the polishing member 3. FIG. 4A is a perspective view of the polishing unit, and FIG. 4B is a side view. FIG. 5A is a front view of the polishing unit, FIG. 5B is a sectional view taken along line AA, and FIG. 5C is a sectional view taken along line BB.
[0016]
As shown in FIGS. 4 and 5, the inner metal fitting 8 includes a cylindrical portion 8 a fitted externally to the wheel shaft 2 and a peripheral portion of a central opening 7 a of the polishing cloth paper 7 formed by bending both sides in the axial direction. And a flange portion 8b pressed in the axial direction. The inner metal fitting 8 is partially pressed in the axial direction by upper and lower press dies having a curve similar to the S-shaped curve of the flange 4, thereby polishing the outer edge of the polishing cloth 7 in a meandering shape. A unit 9 is formed.
[0017]
FIG. 6 is a developed view of the outer peripheral surface of the polishing member. As shown in this figure, on the outer peripheral surface of the polishing member 3, the outer edge of each polishing cloth 7 forms an S-shaped curve, and the length between the apexes on the outer end side in the axial direction is the polishing width (b). The length between the vertices on the inner side in the axial direction is the effective polishing width (be). That is, the effective polishing width (be) refers to a portion where the polishing cloth 7 continuously contacts the surface to be polished.
[0018]
That is, at the position P1 in the effective polishing width (be) of the polishing width (b), after the outer edge of each polishing cloth 7 hits, the outer edge of the adjacent polishing cloth 7 subsequently hits, The surface to be polished is polished to a predetermined polishing depth (d). At the position of P2 outside the range of the effective polishing width (be), after the outer edges of the abrasive cloth 7 at both ends in the axial direction hit, the outer edge of the abrasive cloth 7 does not hit until the abrasive cloth 7 hits again. , P2 is smaller than the polishing depth (d) within the effective polishing width (be), and the cross-sectional shape of the polished surface is substantially trapezoidal as shown in FIG.
[0019]
Next, an evaluation test result when the object to be polished is polished using the rotary polishing tool having the above configuration will be described. FIG. 8 shows a roughness curve of a surface to be polished when a steel plate (high-tensile steel) is polished by using a manually pressed polishing apparatus. In FIG. 8, the scale on the vertical axis is enlarged to 20 times the scale on the horizontal axis. The surface roughness was measured using a small surface roughness measuring device (Surface Test SJ-301) manufactured by Mitutoyo Corporation with a cutoff value (λc) of 8 mm and a measuring speed of 0.5 m / sec. The test was performed once.
[0020]
Among the roughness parameters in the figure, Ra is the arithmetic average roughness (the average value of the absolute values of the deviations from the average line to the measurement curve), and Ry is the maximum height (the lowest valley from the lowest valley to the highest peak from the average line). Rz is the ten-point average roughness (measured from the line parallel to the average line, the average of the heights of the hilltops from the highest to the fifth and the depth of the valley bottom from the deepest to the fifth) (Sum of the average value).
[0021]
In the comparative example, the meandering width (amplitude) of the S-shaped curve of the flange 4 shown in FIG. Is set to 0 mm.
[0022]
In Examples 1 to 4, the polishing cloth paper (MG # 80, manufactured by Sankyo Rikagaku Co., Ltd.) having a roughness count of # 80 and a meandering width of the S-shaped curve (ΔH) of the flange 4 was used. ), The average gradient (θ) between vertices and the curve radius (R) are ΔH = 7 mm, θ = 4 °, R = 313.41 mm in Example 1, and ΔH = 10 mm, θ = 7 in Example 2. °, R = 224.41 mm, Example 3 was ΔH = 15 mm, θ = 9 °, R = 149.19 mm, and Example 4 was ΔH = 20 mm, θ = 12 °, R = 114.08 mm. is there.
[0023]
In Example 5, ΔH = 15 mm, θ = 9 °, and R = 149.19 mm using a polishing cloth paper (A64♯60, manufactured by Riken Corundum) having a roughness count of # 60 on a paper substrate. This is the case. In Comparative Example and Examples 1 to 5, the circumferential length (L) of the flange 4 was 373.66 mm, and the polishing cloth 7 was a circular polishing cloth having a diameter of 200 mm. This corresponds to the S-shaped curve.
[0024]
According to the above experimental results, in the comparative example, Ra = 24.57 μm, Ry = 127.7 μm, and Rz = 100.5 μm, and the roughness curve has a large peak value of the unevenness. Looking at the actual polished surface, a number of groove lines appeared parallel to the longitudinal direction.
[0025]
On the other hand, in Examples 1 to 4, all of the roughness parameters were smaller than those in the comparative example, and the polished surface was polished smoothly. Was not done. This is because, when the polishing member 3 is rotated, a portion of the outer edge of each polishing cloth 7 that hits the surface to be polished moves periodically in the axial direction, and the entire surface of the polishing cloth 7 This is because the outer edge of the polishing pad 7 and the gap between the polishing cloths 7 sequentially hit each other, so that streaky irregularities are not formed on the surface to be polished.
[0026]
In the fifth embodiment, the roughness count is smaller than that of the other examples. In general, when the roughness count is reduced, the roughness parameter increases, but also in Example 5, all of the roughness parameters are smaller than in the comparative example, and the surface to be polished is polished smoothly. Looking at the polished surface, almost no groove streaks were confirmed.
[0027]
Further, comparing the examples, when the meandering width is set to 15 mm (Example 3), the roughness parameter is smallest, and based on this, the meandering width is set to 10 mm to 20 mm. It turns out that it is particularly suitable.
[0028]
【The invention's effect】
As is apparent from the above description, according to the present invention, the polishing cloth is superposed to form a substantially cylindrical polishing member, and the outer edge of each polishing cloth is formed in a meandering shape. The surface can be finished to a desired surface roughness without causing irregularities.
[Brief description of the drawings]
1A is a front view of a rotary polishing tool according to the present invention, FIG. 1B is a plan view thereof, and FIG. 1C is a side view thereof. FIG. 2 is an exploded perspective view of the rotary polishing tool. FIG. 4A is a perspective view of the polishing unit, FIG. 4B is a side view thereof, FIG. 5A is a front view of the polishing unit, FIG. (C) is a sectional view taken along the line BB. FIG. 6 is a developed view of the outer peripheral surface of the polishing member. FIG. 7 is a cross-sectional shape of the polishing surface. FIG. 8 is a roughness curve of the surface to be polished.
DESCRIPTION OF SYMBOLS 1 Rotary polishing tool 2 Wheel shaft 3 Polishing member 4 Flange 7 Polishing cloth 8 Inner fitting 9 Polishing unit

Claims (6)

略円柱状の研磨部材がその中心軸の周りに回転自在に支持され、前記研磨部材を回転させてその周面で被研磨物を研磨する回転研磨具において、前記研磨部材は、複数枚の略円形の研磨布紙が前記中心軸の軸方向に重合されてなり、前記研磨布紙の周縁が前記中心軸の軸方向に往復する蛇行状とされたことを特徴とする回転研磨具。A substantially columnar polishing member is rotatably supported around its central axis, and in a rotary polishing tool that rotates the polishing member and polishes an object to be polished on its peripheral surface, the polishing member includes a plurality of substantially polishing members. A rotary polishing tool characterized in that a circular polishing cloth is superposed in the axial direction of the central axis, and the peripheral edge of the polishing cloth is formed in a meandering shape reciprocating in the axial direction of the central axis. 前記研磨部材は、前記研磨布紙を複数枚重合してなる研磨ユニットが前記中心軸の軸方向に複数組重合されてなり、前記各研磨ユニットは、その各研磨布紙の中央部に形成された軸挿通用の開口にリング状の内金具が挿通され、該内金具により複数枚の研磨布紙が重合状態で挟圧保持されたことを特徴とする請求項1記載の回転研磨具。In the polishing member, a plurality of polishing units formed by superposing a plurality of polishing cloth papers are superposed in the axial direction of the central axis, and each of the polishing units is formed at a central portion of each polishing cloth paper. 2. The rotary polishing tool according to claim 1, wherein a ring-shaped inner metal fitting is inserted into the shaft insertion opening, and a plurality of polishing cloths are pressed and held by the inner metal fitting in a superposed state. 前記内金具の一部を前記中心軸の軸方向に押圧することにより、前記研磨布紙の周縁が蛇行状とされたことを特徴とする請求項2記載の回転研磨具。3. The rotary polishing tool according to claim 2, wherein a part of the inner metal fitting is pressed in the axial direction of the central axis so that a periphery of the polishing cloth is formed in a meandering shape. 前記研磨布紙は、網状のシートに砥粒が塗膜形成されたことを特徴とする請求項1、2又は3記載の回転研磨具。4. The rotary polishing tool according to claim 1, wherein the abrasive cloth is formed by forming a coating film on a net-like sheet. 中央に軸挿通用開口を有し、研磨部材を構成する研磨布紙が複数枚重合され、該研磨布紙の重合状態で前記開口にリング状の内金具が挿通され、該内金具の軸方向両端に形成されたフランジにより前記研磨布紙が挟圧保持されてユニット化されたことを特徴とする研磨ユニット。A central shaft opening is provided, a plurality of abrasive cloths constituting a polishing member are superimposed, and a ring-shaped inner metal fitting is inserted into the opening in a state where the polishing cloth is superposed, and an axial direction of the inner metal fitting is provided. A polishing unit, wherein the polishing cloth paper is held in a unit by being sandwiched and held by flanges formed at both ends. 前記内金具の一部を前記中心軸の軸方向に押圧することにより、前記研磨布紙の周縁が蛇行状とされたことを特徴とする請求項5記載の研磨ユニット。The polishing unit according to claim 5, wherein a peripheral edge of the polishing cloth is formed in a meandering shape by pressing a part of the inner metal fitting in the axial direction of the central axis.
JP2002160577A 2002-05-31 2002-05-31 Rotary polishing tool Pending JP2004001145A (en)

Priority Applications (3)

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PCT/JP2003/006718 WO2003101670A1 (en) 2002-05-31 2003-05-28 Rotary polishing tool
AU2003235458A AU2003235458A1 (en) 2002-05-31 2003-05-28 Rotary polishing tool

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003712A1 (en) * 2004-07-05 2006-01-12 Taiyo Shokai Co.,Ltd. Rotating polishing tool
KR100748927B1 (en) 2006-05-26 2007-08-13 가부시키가이샤 타이요쇼카이 Rotating polishing tool
JP2011189461A (en) * 2010-03-15 2011-09-29 Yuichiro Niizaki Method of manufacturing paper-made brush and paper-made brush

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175958A (en) * 1983-03-19 1984-10-05 Shigeo Suda Wavy and multi-layered abrasive wheel
JPS62173175A (en) * 1986-01-23 1987-07-30 Daiwa Kasei Kogyo Kk Rotary elastic abrasive stone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003712A1 (en) * 2004-07-05 2006-01-12 Taiyo Shokai Co.,Ltd. Rotating polishing tool
US7670211B2 (en) 2004-07-05 2010-03-02 Taiyo Shokai Co., Ltd. Rotating polishing tool
KR100748927B1 (en) 2006-05-26 2007-08-13 가부시키가이샤 타이요쇼카이 Rotating polishing tool
JP2011189461A (en) * 2010-03-15 2011-09-29 Yuichiro Niizaki Method of manufacturing paper-made brush and paper-made brush

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AU2003235458A1 (en) 2003-12-19

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