JPH08132349A - Grinding tool - Google Patents

Grinding tool

Info

Publication number
JPH08132349A
JPH08132349A JP26970394A JP26970394A JPH08132349A JP H08132349 A JPH08132349 A JP H08132349A JP 26970394 A JP26970394 A JP 26970394A JP 26970394 A JP26970394 A JP 26970394A JP H08132349 A JPH08132349 A JP H08132349A
Authority
JP
Japan
Prior art keywords
layer
material layer
grinding material
surface portion
hard
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
JP26970394A
Other languages
Japanese (ja)
Inventor
Naoki Toge
直樹 峠
Shinko Ueno
真弘 上野
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.)
Noritake Diamond Industries Co Ltd
Original Assignee
Noritake Diamond Industries 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 Noritake Diamond Industries Co Ltd filed Critical Noritake Diamond Industries Co Ltd
Priority to JP26970394A priority Critical patent/JPH08132349A/en
Publication of JPH08132349A publication Critical patent/JPH08132349A/en
Pending legal-status Critical Current

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  • Polishing Bodies And Polishing Tools (AREA)

Abstract

PURPOSE: To realize the uniform wear of a grinding material layer without reducing the biting-in force of the grinding material layer by forming the outer periphery surface portion out of the grinding material layer of a comparatively hard grinding material layer, forming the inner periphery surface portion out of a comparatively soft grinding material layer. CONSTITUTION: A hard layer 2 is formed at the outer periphery portion of a grinding material layer 1, and a soft layer 3 is formed at the inner periphery portion of the grinding material layer 1. Grooves 4 for distributing cooling water that is to be discharged through the center opening 5 of the grinding material layer 1 onto the whole surface of the grinding material layer 1 are formed. The outer periphery surface portion consisting of the hard layer 2 is made so as to occupy the approximate 20-40% of the radius of the grinding material layer 1, and the portion of the inner periphery surface is made so as to occupy the rest of the whole surface area of the grinding material layer 1. In the case of being smaller than 20%, the effect of forming the hard layer 2 at the outer periphery is small, and in the case of being larger than 40%, the ratio of the hard layer 2 is too high, and sharpness is reduced. As a result, at the rotary speed of 2000-4000rpm, the wear degree of the outer periphery surface portion of the hard layer 2 can be made approximately the same as the wear degree of the inner periphery surface portion.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、石材のような硬脆性材
料の表面を研磨するための研磨工具に関する。
FIELD OF THE INVENTION This invention relates to polishing tools for polishing the surface of hard and brittle materials such as stone.

【0002】[0002]

【従来の技術】従来から、石材表面を研磨する研磨工具
として、その俯瞰を示す図4および砥材層1の断面構造
を示す図5に示すように、ダイヤモンド砥粒、CBN砥
粒等の超砥粒とフェノール樹脂、変成フェノール樹脂等
の熱硬化性樹脂ボンドから砥材層1を形成し、この砥材
層1の表面に冷却水を流すための溝4を設け、この砥材
層1をバックアップシート7を介して面ファスナー6を
貼付けた構造とし、この空気工具あるいは電動工具の出
力軸に取付けたフランジに貼付けた面ファスナー基材8
を介して固着し、軸中心孔8から冷却水を供給しながら
研磨する形式のものがある。
2. Description of the Related Art Conventionally, as a polishing tool for polishing a surface of a stone material, as shown in FIG. 4 showing a bird's-eye view and FIG. 5 showing a sectional structure of an abrasive layer 1, diamond abrasive grains, CBN abrasive grains, etc. An abrasive material layer 1 is formed from an abrasive grain and a thermosetting resin bond such as phenol resin or modified phenol resin, and a groove 4 for flowing cooling water is provided on the surface of the abrasive material layer 1 and the abrasive material layer 1 is formed. The structure in which the surface fastener 6 is attached via the backup sheet 7, and the surface fastener base material 8 attached to the flange attached to the output shaft of the air tool or the electric tool.
There is also a type in which it is fixed by means of polishing and is supplied while supplying cooling water from the shaft center hole 8.

【0003】[0003]

【発明が解決しようとする課題】ところが、かかる構造
を有する研磨工具においては、砥材層1の外周部の周速
が内周部に対し速く、砥材層外周部が速く摩耗してしま
う。この砥材層外周部の摩耗によって、外周部の被削材
への食い込みが著しく低下し、作業時間が延び作業性が
低下する。さらにこのまま使用を続けると砥材層外周部
裏のバックアップシートや面ファスナーが破損してしま
うこともある。また、内周部は砥材層が残っているにも
かからわず、外周部の摩耗のため、工具自体が使用不能
となって寿命が低下する。
However, in the polishing tool having such a structure, the peripheral speed of the outer peripheral portion of the abrasive layer 1 is faster than that of the inner peripheral portion thereof, and the outer peripheral portion of the abrasive layer is rapidly worn. Due to the abrasion of the outer peripheral portion of the abrasive layer, the cutting of the outer peripheral portion into the work material is remarkably reduced, the working time is extended, and the workability is deteriorated. Further, if it is continued to be used as it is, the backup sheet and the surface fastener on the back of the outer peripheral portion of the abrasive layer may be damaged. Further, even though the abrasive layer remains on the inner peripheral portion, wear of the outer peripheral portion causes the tool itself to become unusable and shortens the service life.

【0004】本発明の目的は、この研磨工具の欠点を解
消することにあって、砥材層の食い込み力を低下させる
ことなく砥材層が均一に摩耗する研磨工具を提供するこ
とにある。
An object of the present invention is to eliminate the drawbacks of the polishing tool, and to provide a polishing tool in which the abrasive layer is uniformly worn without reducing the biting force of the abrasive layer.

【0005】[0005]

【課題を解決するための手段】本発明は、円板状の砥材
層をバックアップシートを介して面ファスナーを貼付け
た構造を有する研磨工具において、前記砥材層を外周面
部分を比較的硬質の砥材層から形成し、且つ、内周面部
分を比較的軟質の砥材層から形成したことを特徴とす
る。
SUMMARY OF THE INVENTION The present invention is a polishing tool having a structure in which a disc-shaped abrasive material layer is pasted with a surface fastener via a backup sheet, and the abrasive material layer has a relatively hard outer peripheral surface portion. Of the abrasive material layer and the inner peripheral surface portion is formed of a relatively soft abrasive material layer.

【0006】硬質層からなる外周面部分は砥材層の半径
の略20%〜40%を占めるようにし、内周面の部分は
砥材層の全表面積の残りを占めるようにする。20%よ
り小さい場合は、外周に硬質層を形成した効果が小さ
く、また40%より大きい場合は、硬質層の比率が高す
ぎて切味が低下する。
The outer peripheral surface portion of the hard layer occupies approximately 20% to 40% of the radius of the abrasive layer, and the inner peripheral surface portion occupies the rest of the total surface area of the abrasive layer. If it is less than 20%, the effect of forming a hard layer on the outer periphery is small, and if it is more than 40%, the ratio of the hard layer is too high and the sharpness is reduced.

【0007】外周面部分の硬質層は、内周面部分の軟質
層に比べ、10〜50%の高耐摩耗性を有する結合剤を
使用することによって、あるいは、外周が内周に比べ、
ダイヤモンド砥材集中度を10〜50%高くすることに
よって形成される。
The hard layer on the outer peripheral surface portion uses a binder having a high wear resistance of 10 to 50% as compared with the soft layer on the inner peripheral surface portion, or
It is formed by increasing the diamond abrasive concentration by 10 to 50%.

【0008】[0008]

【作用】研磨工具の通常の2000〜4000rpmの
回転速度の下で、硬質層の外周面部分の摩耗程度を内周
面部分の摩耗程度と略同一とすることができる。
The wear degree of the outer peripheral surface portion of the hard layer can be made substantially the same as the wear degree of the inner peripheral surface portion under the normal rotation speed of the polishing tool of 2000 to 4000 rpm.

【0009】[0009]

【実施例】【Example】

実施例1 図1は本発明を適用した研磨工具の砥材層1を表面から
見た図であり、図2はその断面を示す。
Example 1 FIG. 1 is a view of an abrasive material layer 1 of a polishing tool to which the present invention is applied as seen from the surface, and FIG. 2 shows a cross section thereof.

【0010】同図において、2は砥材層1の外周部に形
成された硬質層を示し、3は、その内周部に形成された
軟質層を示し、4は中心開口5から放出される冷却水を
砥材層1の全表面に形成した溝を示す。この溝4は任意
の形態に形成することができるが、本発明の実施例の場
合には、中心開口4に対して同心状に6本、放射状にし
かも矢印に示す工具の回転方向Rに対して、それぞれが
逆向きに弓形に多数形成されている。図2に示すように
砥材層1の厚みaは一様に2mm厚に形成され、その砥
材層1の下面には、バックアップシートを介して厚みb
が3mmの面ファスナー5が貼付けられている。
In the figure, 2 is a hard layer formed on the outer peripheral portion of the abrasive layer 1, 3 is a soft layer formed on the inner peripheral portion, and 4 is emitted from the central opening 5. A groove in which cooling water is formed on the entire surface of the abrasive layer 1 is shown. The grooves 4 can be formed in any shape, but in the case of the embodiment of the present invention, six grooves are concentric with the central opening 4 and are radial and with respect to the rotational direction R of the tool indicated by the arrow. Thus, each is formed in a plurality of arcuate shapes in opposite directions. As shown in FIG. 2, the thickness a of the abrasive layer 1 is uniformly formed to be 2 mm, and the lower surface of the abrasive layer 1 has a thickness b through a backup sheet.
Is attached to the surface fastener 5 of 3 mm.

【0011】上記、外周硬質層2は、砥材層1の半径r
が40mmに対して、その幅r2 を半径rの30%とし
て、残りの内周部3を中心開口5を残して軟質層3を形
成した。
The outer peripheral hard layer 2 has a radius r of the abrasive layer 1.
Was 40 mm, the width r 2 was set to 30% of the radius r, and the remaining inner peripheral portion 3 was left with the central opening 5 to form the soft layer 3.

【0012】比較のために、単一組成を有する砥材層を
装着した研磨工具を作成した。
For comparison, a polishing tool equipped with an abrasive layer having a single composition was prepared.

【0013】本実施例の場合、結合剤の組成によって硬
質層と軟質層を変えた。
In the case of this example, the hard layer and the soft layer were changed depending on the composition of the binder.

【0014】表1に、その結合剤の組成を示す。なお、
この場合はダイヤモンド砥材の集中度は内周部と外周部
とも同様にした。
Table 1 shows the composition of the binder. In addition,
In this case, the degree of concentration of the diamond abrasive was the same on the inner peripheral portion and the outer peripheral portion.

【0015】同表において、GCはSiCを示し、その
耐摩耗性が通常の130%になるように配合した。同表
における耐摩耗性は、石材の研磨テストを行い、被削除
去量(g)/砥材層摩耗量(g)で示される研削比の値
を指数化したものである。
In the table, GC represents SiC, and it was compounded so that its wear resistance would be 130% of the usual value. The abrasion resistance in the table is a value obtained by indexing the value of the grinding ratio represented by the amount of material to be deleted (g) / abrasive material layer abrasion amount (g) after a stone polishing test.

【0016】また、比較例として、従来と同様に、図1
に示す砥材層1の全面を、本発明の内周部を形成した軟
質層とした工具を用いた。
As a comparative example, FIG.
A tool was used in which the entire surface of the abrasive layer 1 shown in (1) was a soft layer having an inner peripheral portion according to the present invention.

【0017】実施例2 外周部硬質層結合材として、実施例1と同様の硬質結合
剤の使用と共に、砥材の集中度を高めたものを調整し
て、実施例1と同様の図1に示す研磨工具を作成した。
表2に硬質層、軟質層の構成を示す。
Example 2 As the peripheral hard layer binder, the same hard binder as in Example 1 was used, and the one in which the concentration of the abrasive was increased was adjusted to obtain the same FIG. 1 as in Example 1. The polishing tool shown was created.
Table 2 shows the configurations of the hard layer and the soft layer.

【0018】[0018]

【表1】 [Table 1]

【表2】 上記各実施例によって得た研磨工具を下記の条件で使い
切りになるまで研磨テストを行った。
[Table 2] A polishing test was conducted under the following conditions until the polishing tools obtained in each of the above examples were used up.

【0019】研磨テスト条件 被削材 :天山御影石 研磨工具外径:φ80 研磨機械 :空気工具 回転数 :1000rpm 研磨方式 :手動、湿式研磨 研磨工具粒度:♯500 表3に、本発明の各実施例における研磨テスト後の砥材
層の外周部と内周部の厚さ測定結果を示す。
Polishing Test Conditions Work Material: Tianshan Granite Polishing Tool Outer Diameter: φ80 Polishing Machine: Air Tool Rotation Speed: 1000 rpm Polishing Method: Manual, Wet Polishing Polishing Tool Grain Size: # 500 Table 3 shows each example of the present invention. 7 shows the results of measuring the thickness of the outer peripheral portion and the inner peripheral portion of the abrasive layer after the polishing test in FIG.

【0020】※ 外周部の残りが0.1mm(ほぼ使い
切り状態)になるまでテストをした。この結果、従来例
は内周部が0.8mm残っているにもかかわらず継続使
用ができないという結果になった。
* Tests were carried out until the rest of the outer peripheral portion was 0.1 mm (almost completely used up). As a result, the conventional example cannot be used continuously even though the inner peripheral portion remains 0.8 mm.

【0021】[0021]

【表3】 同表に示すように、本発明の実施例にかかる砥材層の摩
耗程度は、外周部と内周部は、比較例として挙げた従来
のものと比較して均一であることがわかる。
[Table 3] As shown in the table, it can be seen that the degree of wear of the abrasive layer according to the example of the present invention is more uniform in the outer peripheral portion and the inner peripheral portion as compared with the conventional one given as the comparative example.

【0022】図3は、それぞれの耐用性の調査結果を示
す。実施例1は、外周部、内周部にほぼ均一に摩耗し、
15m2 の加工が可能であった。これに対し比較例は内
周部の厚味が0.8mm残存するにもかかわらず9.5
2 で外周部が摩耗し、寿命となった。
FIG. 3 shows the results of investigations of the respective durability. In Example 1, the outer peripheral portion and the inner peripheral portion were worn almost uniformly,
Processing of 15 m 2 was possible. On the other hand, in the comparative example, the thickness of the inner peripheral portion was 9.5 although the thickness remained 0.8 mm.
At m 2 , the outer circumference was worn out and the life was reached.

【0023】実施例2は、実施例1とほぼ同様の傾向を
示したが、外周、内周厚味がほぼ等しく摩耗し、17m
2 の加工可能であった。
Example 2 showed almost the same tendency as Example 1, but the outer and inner peripheral thicknesses were worn to be approximately equal, and the thickness was 17 m.
It was possible to process 2 .

【0024】[0024]

【発明の効果】本発明によって以下の効果を奏する。According to the present invention, the following effects can be obtained.

【0025】(1)硬度の高い砥材層によって形成した
外周部分の早期摩耗がなく、ほぼ内周部分と均一に摩耗
し、工具耐用が向上する。
(1) There is no early wear of the outer peripheral portion formed by the abrasive layer having high hardness, and the wear is substantially uniform with the inner peripheral portion, and the tool durability is improved.

【0026】(2)外周部、内周部が均一に摩耗するた
め、被削材と砥材層の接触面積が大きく、作業性が向上
する。
(2) Since the outer peripheral portion and the inner peripheral portion are evenly worn, the contact area between the work material and the abrasive layer is large and the workability is improved.

【0027】(3)外周部の被削材への食い込みを維持
できるため、初めから終わりまで安定した切味が得られ
る。
(3) Since it is possible to maintain the cutting of the outer peripheral portion into the work material, a stable sharpness can be obtained from the beginning to the end.

【0028】(4)外周部、内周部がバランスよく摩耗
するため、使用中に異常な振動の発生がない。
(4) Since the outer peripheral portion and the inner peripheral portion are worn in a well-balanced manner, no abnormal vibration is generated during use.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の実施例に係る研磨工具の砥材層の表
面の状態を示す。
FIG. 1 shows a surface state of an abrasive layer of a polishing tool according to an embodiment of the present invention.

【図2】 図1に示す研摩工具の断面構造を示す。FIG. 2 shows a sectional structure of the polishing tool shown in FIG.

【図3】 本発明の研磨工具のテスト結果を比較例の場
合と共に示す。
FIG. 3 shows the test results of the polishing tool of the present invention together with the case of a comparative example.

【図4】 従来の研摩工具の俯瞰図を示す。FIG. 4 shows an overhead view of a conventional polishing tool.

【図5】 従来の研摩工具の断面構造を示す。FIG. 5 shows a cross-sectional structure of a conventional polishing tool.

【符号の説明】[Explanation of symbols]

1 砥材層 2 外周部分の硬質層 3 内周
部分の軟質層 4 表面溝 5 中心開口 6 面フ
ァスナー 7 バックアップシート 8 面ファスナー基材
DESCRIPTION OF SYMBOLS 1 Abrasive material layer 2 Hard layer of outer peripheral portion 3 Soft layer of inner peripheral portion 4 Surface groove 5 Center opening 6 Surface fastener 7 Backup sheet 8 Surface fastener base material

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 円板状の砥材層をバックアップシートを
介して面ファスナーを貼付けた構造を有する研磨工具に
おいて、前記砥材層を外周面部分を比較的硬質の砥材層
から形成し、且つ、内周面部分を比較的軟質の砥材層か
ら形成したことを特徴とする研磨工具。
1. A polishing tool having a structure in which a disc-shaped abrasive layer is pasted with a surface fastener via a backup sheet, wherein the abrasive layer is formed from a relatively hard abrasive layer at an outer peripheral surface portion, A polishing tool having an inner peripheral surface portion formed of a relatively soft abrasive layer.
【請求項2】 砥材層における硬質層からなる外周面部
分の巾を砥材層の半径の略20%〜40%を占めるよう
にしたことを特徴とする研磨工具。
2. A polishing tool characterized in that the width of an outer peripheral surface portion of a hard layer in an abrasive layer occupies approximately 20% to 40% of the radius of the abrasive layer.
【請求項3】 砥材層における外周面部分の硬質層を内
周面部分の軟質層に比べ10〜50%の高耐摩耗性を有
する結合剤を使用するか、あるいは、外周面部分が内周
面部分の軟質層に比べ、ダイヤモンド砥材集中度を10
〜50%高くすることによって形成したことを特徴とす
る研磨工具。
3. A hard layer in the outer peripheral surface portion of the abrasive layer is made of a binder having a high wear resistance of 10 to 50% as compared with a soft layer in the inner peripheral surface portion, or the outer peripheral surface portion is internally Compared with the soft layer on the peripheral surface, the diamond abrasive concentration is 10
A polishing tool characterized by being formed by increasing it by -50%.
JP26970394A 1994-11-02 1994-11-02 Grinding tool Pending JPH08132349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26970394A JPH08132349A (en) 1994-11-02 1994-11-02 Grinding tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26970394A JPH08132349A (en) 1994-11-02 1994-11-02 Grinding tool

Publications (1)

Publication Number Publication Date
JPH08132349A true JPH08132349A (en) 1996-05-28

Family

ID=17476014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26970394A Pending JPH08132349A (en) 1994-11-02 1994-11-02 Grinding tool

Country Status (1)

Country Link
JP (1) JPH08132349A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101243154B1 (en) * 2011-04-28 2013-03-13 동신 다이야프렉스 주식회사 Diamond polishing tool
EP3569360A1 (en) * 2018-05-16 2019-11-20 3M Innovative Properties Company Grinding wheel
WO2020161869A1 (en) * 2019-02-07 2020-08-13 日本レヂボン株式会社 Rotary grindstone
CN112405334A (en) * 2020-10-21 2021-02-26 湖州华通研磨制造有限公司 Adjustable grinding device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6288579A (en) * 1985-10-15 1987-04-23 Toyoda Mach Works Ltd Grinding tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6288579A (en) * 1985-10-15 1987-04-23 Toyoda Mach Works Ltd Grinding tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101243154B1 (en) * 2011-04-28 2013-03-13 동신 다이야프렉스 주식회사 Diamond polishing tool
EP3569360A1 (en) * 2018-05-16 2019-11-20 3M Innovative Properties Company Grinding wheel
WO2019220373A1 (en) * 2018-05-16 2019-11-21 3M Innovative Properties Company Grinding wheel
CN112135711A (en) * 2018-05-16 2020-12-25 3M创新有限公司 Grinding wheel
US20210069867A1 (en) * 2018-05-16 2021-03-11 3M Innovative Properties Company Grinding wheel
WO2020161869A1 (en) * 2019-02-07 2020-08-13 日本レヂボン株式会社 Rotary grindstone
CN112405334A (en) * 2020-10-21 2021-02-26 湖州华通研磨制造有限公司 Adjustable grinding device

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