JPH0437719Y2 - - Google Patents
Info
- Publication number
- JPH0437719Y2 JPH0437719Y2 JP1985159199U JP15919985U JPH0437719Y2 JP H0437719 Y2 JPH0437719 Y2 JP H0437719Y2 JP 1985159199 U JP1985159199 U JP 1985159199U JP 15919985 U JP15919985 U JP 15919985U JP H0437719 Y2 JPH0437719 Y2 JP H0437719Y2
- Authority
- JP
- Japan
- Prior art keywords
- segments
- segment
- bronze
- pipe body
- diamond
- 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
- 229910000906 Bronze Inorganic materials 0.000 claims description 14
- 239000010974 bronze Substances 0.000 claims description 14
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 description 14
- 239000010432 diamond Substances 0.000 description 14
- 238000005520 cutting process Methods 0.000 description 12
- 239000006061 abrasive grain Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
【考案の詳細な説明】 本考案はコアドリルに関するものである。[Detailed explanation of the idea] The present invention relates to a core drill.
（従来の技術）
この種のドリルとしてはダイヤモンド層セグメ
ント（以下、単にセグメントという。）をパイプ
体の端縁に対し所定の間隔で銀口一付けするか、
もしくはパイプ体と共に同時に焼結するか、もし
くはパイプ体の端縁に設けた凹部にセグメントを
埋着する方法が使用されて来た。(Prior art) This type of drill has diamond layer segments (hereinafter simply referred to as segments) attached to the edge of the pipe body at predetermined intervals, or
Alternatively, methods have been used in which the segments are sintered together with the pipe body, or the segments are embedded in recesses provided at the edge of the pipe body.
さて、上記した第１の手段では第２図に示すよ
うにセグメントA2が銀口一付けであるため、高
温に弱くドライカツトに不向きだえるとともに、
セグメントA2の間にある間隔部分で、このセグ
メントA2が被削物（図示しない）にひつかかり
セグメントA2が欠けたり、パイプ体１２から剥
離する欠点がある。 Now, in the first method described above, as shown in Fig. 2, segment A2 has only one silver end, so it is weak against high temperatures and is not suitable for dry cutting.
There is a drawback that the segments A2 get caught on a workpiece (not shown) in the space between the segments A2, causing the segments A2 to chip or peel off from the pipe body 12.
次に、上記した第２の手段では第３図に示すよ
うにセグメントA2をパイプ体１３と同時に焼結
するものでは比較的低温焼結の可能なマトリツク
スしか使用できないので、耐え磨耗性に問題があ
り、しかも金型コストが高く、コスト高となる問
題がある。 Next, in the second method described above, in which the segment A2 is sintered at the same time as the pipe body 13 as shown in FIG. 3, only a matrix that can be sintered at a relatively low temperature can be used, so there is a problem in durability and abrasion resistance. However, there is a problem in that the mold cost is high and the cost is high.
さらに、上記した第３のものでは第４図に示す
ようにパイプ体１４の台金とセグメントＡ４が同
一面になつたとき前記台金とセグメントA4とを
トモズリするとになるため切削性能が劣化すると
いう欠点がある。 Furthermore, in the third method described above, when the base metal of the pipe body 14 and the segment A4 become flush with each other as shown in FIG. There is a drawback.
考案の目的
（考案が解決しようとする問題点）
本考案は上記した従来の気点を排除しうる手段
を求めることである。Purpose of the invention (problems to be solved by the invention) The purpose of the invention is to find a means that can eliminate the above-mentioned conventional problems.
（問題点を解決するための手段）
上記した問題点を解決するため技術的手段はパ
イプ体１の端縁２に沿つて複数個の研粒セグメン
トＡとブロンズセグメントＢとをほぼ密接状で交
互に、かつ両セグメントＡ，Ｂの端面がほぼ同一
面となるように溶接することを要旨とするもので
ある。(Means for solving the problem) In order to solve the above-mentioned problem, a technical means is to alternately arrange a plurality of abrasive segments A and bronze segments B along the edge 2 of the pipe body 1 in a substantially close manner. The gist is to weld the segments A and B so that their end faces are substantially flush with each other.
（作用）
上記のように構成されたコアドリルで被削物
（図示しない）を切削すると、前記セグメントＡ
はブロンズセグメントＢの補助作用で耐熱性、耐
久性、切削性能に優れた穿孔作用を行うことがで
きる。(Function) When cutting a workpiece (not shown) with the core drill configured as described above, the segment A
With the aid of the bronze segment B, it is possible to perform a drilling operation with excellent heat resistance, durability, and cutting performance.
（実施例）
以下、本考案の一実施例を第１図に従つて説明
すると、第１図において、パイプ体１の端縁２に
沿つて複数個の研粒セグメントとしてのダイヤモ
ンド粒セグメントＡとブロンズセグメントＢとを
隙間なくほぼ密接状で交互に、かつ両セグメント
Ａ，Ｂの端面がほぼ同一面となるように溶接
（TIG−Wels）する一方、前記パイプ体１には冷
却用の通孔３を多数穿設するものである。ここ
で、ブロンズとは青銅、銅、銅合金又はそれと同
質のものとし、切削使用に伴い、ダイヤモンド鍔
部セグメントＡと同量ずつ磨耗するものである。(Embodiment) An embodiment of the present invention will be described below with reference to FIG. 1. In FIG. Bronze segments B are welded (TIG-Wels) so that the segments A and B are alternately closely spaced without any gaps and the end surfaces of both segments A and B are approximately on the same plane, while cooling holes are provided in the pipe body 1. 3 are drilled in large numbers. Here, bronze refers to bronze, copper, copper alloy, or a material of the same quality, and is worn by the same amount as the diamond flange segment A during cutting.
上記のように構成された本実施例のダイヤモン
ドコアドリルの作用効果は本考案自体の作用につ
いて説明する。 The operation and effect of the diamond core drill of this embodiment configured as described above will be explained in terms of the operation of the present invention itself.
前記コアドリルで被切削物（図示しない）を切
削する際、高速回転するパイプ体１の軸心方向に
沿つてコアドリルを被切削面に押圧すると、ダイ
ヤモンド粒セグメントＡの端面とブロンズセグメ
ントＢの端面が被切削物の切削面に摺接する。す
ると、被切削面は硬質のダイヤモンド粒セグメン
トＡにより掘り下げられ、一方、ブロンズセグメ
ントＢは被切削面に大して掘り下げ作用はしない
が、常に被切削面との摺接状態を維持する。 When cutting a workpiece (not shown) with the core drill, when the core drill is pressed against the surface to be cut along the axial direction of the pipe body 1 rotating at high speed, the end face of the diamond grain segment A and the end face of the bronze segment B Slides into contact with the cutting surface of the workpiece. Then, the surface to be cut is dug by the hard diamond grain segments A, while the bronze segments B do not have much digging effect on the surface to be cut, but always maintain a state of sliding contact with the surface to be cut.
そして、この実施例の構成によると、両セグメ
ントＡ，Ｂがほぼ密接状に交互に溶接されている
ので、切削加工時に掘り下げ作用をなすダイヤモ
ンド粒セグメントＡが被切削面に引つ掛かつて欠
落したりすることがない。 According to the configuration of this embodiment, both segments A and B are alternately welded almost closely, so that the diamond grain segment A, which acts as a digger during cutting, gets caught on the surface to be cut and does not come off. There is nothing to do.
又、一般に、ダイヤモンド粒セグメントＡより
もブロンズセグメントＢの方が熱伝導性に優れて
いることから、切削加工時に発生する摩擦熱の放
熱に関しては、このブロンズセグメントＢがダイ
ヤモンド粒セグメントＡの放熱作用に寄与して、
掘り下げ作用をなす前記ダイヤモンド粒セグメン
トＡの破損防止に貢献する。 In addition, since bronze segment B generally has better thermal conductivity than diamond grain segment A, bronze segment B outperforms diamond grain segment A in dissipating the frictional heat generated during cutting. Contribute to
This contributes to preventing breakage of the diamond grain segment A, which performs a digging action.
さらに、この掘り下げ作用により、ダイヤモン
ド粒セグメントＡは磨耗するが、被切削面に摺接
する両セグメントＡ，Ｂの端面はほぼ同一面に形
成されているので、ブロンズセグメントＢも同量
ずつ磨耗される。そのため、被切削面に対して両
セグメントＡ，Ｂによるトモズル状態とされる
が、ブロンズセグメントＢは軟質であるので、ダ
イヤモンド粒セグメントＡによる掘り下げ作用に
支障を与えることはない。 Furthermore, due to this digging action, the diamond grain segment A is worn out, but since the end faces of both segments A and B that come into sliding contact with the surface to be cut are formed on almost the same surface, the bronze segment B is also worn out by the same amount. . Therefore, both segments A and B create a torn state on the surface to be cut, but since bronze segment B is soft, it does not interfere with the digging action of diamond grain segment A.
しかも、パイプ体１の端縁２に対する両セグメ
ントＡ，Ｂの取付手段が溶接固定であるため、耐
熱性に優れるとともに特別な金型を使用する必要
もなく、製作コストを低くすることができるもの
である。 Moreover, since the means for attaching both segments A and B to the end edge 2 of the pipe body 1 is fixed by welding, it has excellent heat resistance and does not require the use of a special mold, making it possible to reduce manufacturing costs. It is.
（変更例）
上記したセグメントＡの外径面及び／又は内径
面に対し縦溝又は斜溝を形成すると、ダイヤモン
ドコアドリルの切削性能を良化向上させることが
できる。又、前記ダイヤモンド研粒の外に別の研
粒（例えば立方晶窒化ホウ素研粒）を使用しても
よく、あるいは通孔３の形状を任意に変更しても
よい。(Modification example) By forming vertical grooves or oblique grooves on the outer diameter surface and/or inner diameter surface of the segment A described above, the cutting performance of the diamond core drill can be improved. Further, other abrasive grains (for example, cubic boron nitride abrasive grains) may be used in addition to the diamond abrasive grains, or the shape of the through hole 3 may be arbitrarily changed.
考案の効果
以上詳述したように、本考案によれば軟質で熱
伝導性に優れたブロンズセグメントの密接介装に
基づき研粒セグメントの切削加工時における欠
落、剥離を防止できるとともに、研粒セグメント
の放熱作用を効率良く行なつて切削加工時の摩擦
熱に起因する同研粒セグメントの破損防止を図る
ことができ、さらには両セグメントによるトモズ
ル状態でも切削性能の低下を招来せず、しかも金
型コストを低くできるので製作コストを低減でき
るという優れた効果を奏する。Effects of the Invention As detailed above, according to the present invention, it is possible to prevent the abrasive grain segments from being chipped or peeled off during the cutting process based on the close interposition of the bronze segments, which are soft and have excellent thermal conductivity. It is possible to efficiently dissipate heat and prevent damage to the abrasive grain segments caused by frictional heat during cutting.Furthermore, even when both segments are in a tangled state, cutting performance does not deteriorate, and the metal This has the excellent effect of reducing manufacturing costs since the mold cost can be lowered.
第１図は本考案の斜視図、第２図〜第４図はそ
れぞれ従来例を示す斜視図である。
１……パイプ体、２……端縁、Ａ……ダイヤモ
ンド層セグメント、Ｂ……ブロンズセグメント。
FIG. 1 is a perspective view of the present invention, and FIGS. 2 to 4 are perspective views of conventional examples. 1...Pipe body, 2...Edge, A...Diamond layer segment, B...Bronze segment.
Claims (1)
グメントＡとブロンズセグメントＢとをほぼ密
接状で交互に、かつ両セグメントＡ，Ｂの端面
がほぼ同一面となるように溶接したことを特徴
とするコアドリル。 ２ パイプ体１は冷却用の通孔３を多数穿設して
いる実用新案登録請求の範囲第１項記載のコア
ドリル。[Claims for Utility Model Registration] 1. Along the edge 2 of the pipe body 1, a plurality of abrasive segments A and bronze segments B are arranged alternately in a substantially close manner, and the end surfaces of both segments A and B are substantially the same. A core drill characterized by being welded in a flat surface. 2. The core drill according to claim 1, wherein the pipe body 1 has a large number of cooling holes 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985159199U JPH0437719Y2 (en) | 1985-10-17 | 1985-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985159199U JPH0437719Y2 (en) | 1985-10-17 | 1985-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6268764U JPS6268764U (en) | 1987-04-30 |
| JPH0437719Y2 true JPH0437719Y2 (en) | 1992-09-04 |
Family
ID=31083405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985159199U Expired JPH0437719Y2 (en) | 1985-10-17 | 1985-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437719Y2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2593777Y2 (en) * | 1992-02-24 | 1999-04-12 | ノリタケダイヤ株式会社 | Dry core bit |
| US9097067B2 (en) * | 2009-02-12 | 2015-08-04 | Saint-Gobain Abrasives, Inc. | Abrasive tip for abrasive tool and method for forming and replacing thereof |
| US8597088B2 (en) | 2009-12-31 | 2013-12-03 | Saint-Gobain Abrasives, Inc. | Abrasive article incorporating an infiltrated abrasive segment |
| PL2593274T3 (en) | 2010-07-12 | 2017-09-29 | Saint-Gobain Abrasives, Inc. | Abrasive article for shaping of industrial materials |
| JP2014172146A (en) * | 2013-03-12 | 2014-09-22 | Disco Abrasive Syst Ltd | Grinding wheel |
| DE102013218233A1 (en) * | 2013-05-02 | 2014-11-06 | Bayerische Motoren Werke Aktiengesellschaft | Rotating grinding tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152592A (en) * | 1974-08-15 | 1976-05-10 | Edenvale Eng Works | Kensakukoguno kensakububunno seisakunimochiiru segumentooyobi segumentootsukuruhohonarabini kensakukoguotsukuruhoho |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138715U (en) * | 1984-02-25 | 1985-09-13 | 捧 典雄 | Structure of tools for drilling or cutting reinforced concrete, etc. |
-
1985
- 1985-10-17 JP JP1985159199U patent/JPH0437719Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152592A (en) * | 1974-08-15 | 1976-05-10 | Edenvale Eng Works | Kensakukoguno kensakububunno seisakunimochiiru segumentooyobi segumentootsukuruhohonarabini kensakukoguotsukuruhoho |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6268764U (en) | 1987-04-30 |
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