JPH1110634A - Bit for core drill and manufacture thereof - Google Patents
Bit for core drill and manufacture thereofInfo
- Publication number
- JPH1110634A JPH1110634A JP16872797A JP16872797A JPH1110634A JP H1110634 A JPH1110634 A JP H1110634A JP 16872797 A JP16872797 A JP 16872797A JP 16872797 A JP16872797 A JP 16872797A JP H1110634 A JPH1110634 A JP H1110634A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- core
- adhesive
- fitting
- core drill
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、コンクリート構造
物、アスファルト、ブロック、石材、岩石等（本明細書
では、これらを単に「コンクリート構造物等」という）
への孔穿けに用いるコアドリル用コアビットと、その製
造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to concrete structures, asphalt, blocks, stones, rocks and the like (in the present specification, these are simply referred to as "concrete structures").
The present invention relates to a core bit for a core drill used for drilling holes in a hole, and a method for manufacturing the same.
【０００２】[0002]
【従来技術】コアドリルのドリルヘッドに着脱可能に取
着され、コンクリート構造物等へ孔穿けを行う際に用い
るコアドリル用コアビットは、有底の円筒形のボディの
開口端にダイヤモンドチップを周方向に一定間隔で取付
けてなるもので、図１に示すように、ボディをドリルヘ
ッドの出力軸に止着されるカップリング１と、チューブ
２と、ダイヤモンドチップ３を固着したビット４に三分
割して、それぞれを捩込みにより連結したもの、図２に
示すように、図１に示すカップリング１とチューブ２を
一体化したボディ６とビット４の両者を捩込みにより連
結した二分割型のものが知られる。2. Description of the Related Art A core bit for a core drill, which is detachably attached to a drill head of a core drill and is used for drilling a hole in a concrete structure or the like, has a diamond tip attached to an open end of a bottomed cylindrical body in a circumferential direction. As shown in FIG. 1, the body is divided into three parts: a coupling 1 fixed to an output shaft of a drill head, a tube 2 and a bit 4 to which a diamond tip 3 is fixed. 2, a two-part type in which both the body 6 and the bit 4 in which the coupling 1 and the tube 2 are integrated as shown in FIG. 1 are connected by screwing, as shown in FIG. known.
【０００３】コアドリルはとくに先端のチップ部分が損
耗し易く、上述するような分割型のものでは、損耗部分
のみを取換えることが可能であるが、各部の連結部分に
はそれぞれ雄ネジや雌ネジ等のネジを切る必要があるた
めにボディが肉厚となる。コアビットでは最近、切削速
度を向上させるためにビット先端のダイヤモンドチップ
を薄くする傾向にあり、これに伴い、ボディも薄肉とな
る傾向があるが、肉厚を薄くする程雄ネジや雌ネジのネ
ジ加工が困難となり、加工寸法精度を出すことも困難と
なる。そのために最近のコアビットはビットを含めてボ
ディを一体化したものが主流となりつゝある。[0003] The core drill is particularly susceptible to wear at the tip of the tip, and in the above-mentioned split type, only the worn part can be replaced. The body becomes thick because it is necessary to cut the screws such as. In recent years, core bits have tended to make the diamond tip at the tip of the bit thinner in order to increase the cutting speed.Thus, the body also tends to be thinner. Processing becomes difficult, and it becomes difficult to obtain processing dimensional accuracy. For this reason, recent core bits have become the mainstream in which the body including the bit is integrated.
【０００４】直径が１ｍ以上もある大口径品についても
ボディを一体化して先端のダイヤモンドチップのみを取
換えられるようにしたものが多いが、大口径のものでは
嵩張って重量が大となり、そのため運搬が容易でなく、
流通コストも嵩む。Many large-diameter products having a diameter of 1 m or more have an integrated body so that only the tip of the diamond tip can be replaced. However, large-diameter products are bulky and heavy. Not easy to transport,
Distribution costs also increase.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、分割型の利
点を生かし、分割される各部の連結を捩込みによらない
で行うことができるコアドリル用ビットと、その製造法
を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a core drill bit and a method for manufacturing the same, which can take advantage of the split type and can connect the parts to be split without screwing. Aim.
【０００６】[0006]
【課題の解決手段】本発明のコアドリル用コアビット
は、複数に分割して各部に嵌め合い用のインロー部を形
成し、加熱すると、溶融若しくは劣化する接着手段で嵌
め合い部を連結したことを特徴とし、その製造法は、分
割された各部のインロー部を接着手段を介在させて嵌め
合いにより連結することを特徴とする。A core bit for a core drill according to the present invention is characterized in that a spigot portion for fitting is formed in each of a plurality of portions, and the fitting portions are connected by an adhesive means which melts or deteriorates when heated. The manufacturing method is characterized in that the spigot portions of each of the divided portions are connected to each other by fitting via an adhesive means.
【０００７】本発明によると、例えばビットを取換える
ため取外すときには、嵌め合い部を加熱する。これによ
り接着手段が溶融若しくは劣化してビットを取外すこと
が可能となる。本発明で用いる接着手段としては、例え
ばハンダに代表される軟ろう、或いは銀ろう、銅ろう、
黄銅ろう等の硬ろうよりなるろう、エポキシ系、シアノ
アクリレート系接着剤等を例示することができる。この
うち、前者のろうは、可逆性があることから加熱によっ
て溶融しても冷却すると再び固化する。そのため口径が
大で、円周の長いコアビットでは全周を一度に加熱する
必要があり、しかもろうは融点が比較的高いため、溶融
するには高温で加熱せねばならない。このためコアビッ
トの一部を分離するには炉が必要で、現場において携帯
用のガスバーナで溶融することはできない。According to the present invention, for example, when the bit is removed for replacement, the fitting portion is heated. This makes it possible to remove the bit by melting or deteriorating the bonding means. As the bonding means used in the present invention, for example, soft solder represented by solder, or silver solder, copper solder,
Examples thereof include brazing wax such as brass brazing, epoxy-based, and cyanoacrylate-based adhesives. Of these, the former wax is reversible and solidifies again when cooled even when melted by heating. Therefore, in the case of a core bit having a large diameter and a long circumference, it is necessary to heat the entire circumference at one time, and since the melting point of the wax is relatively high, it is necessary to heat the wax at a high temperature to melt it. For this reason, a furnace is required to separate a part of the core bit, and it cannot be melted on site by a portable gas burner.
【０００８】この点、後者の接着剤は可逆性がなく、加
熱によって一度劣化すると、元に戻ることがないため、
円周上を順次一度加熱するだけで接着剤が劣化して接着
強度が低下し、分離可能となる。また接着剤は融点が比
較的低いため加熱温度を低くすることができる。なお、
湿式の場合、切削中は切削箇所への冷却水の注入によっ
てコアビットが冷却され、接着剤の融点以上に加熱され
ることはないため接着剤が劣化することはない。In this respect, the latter adhesive is not reversible, and once deteriorated by heating, does not return to its original state.
The adhesive is degraded only by sequentially heating the circumference once, the adhesive strength is reduced, and separation is possible. Further, since the adhesive has a relatively low melting point, the heating temperature can be lowered. In addition,
In the case of the wet method, during cutting, the core bit is cooled by injecting cooling water into the cut portion, and is not heated to a temperature higher than the melting point of the adhesive, so that the adhesive does not deteriorate.
【０００９】したがって別の発明は、コアビットが湿式
用で、接着手段を接着剤としたことを特徴とする。Therefore, another aspect of the invention is characterized in that the core bit is of a wet type and the bonding means is an adhesive.
【００１０】[0010]
【発明の実施の形態】図３は、図示省略したコアドリル
のドリルヘッドに着脱可能に取着されるコアビットを、
先端にダイヤモンドチップ１１を備えたビット１２と、
それ以外のボディ１３とに分割した二分割型のコアビッ
トについて示すもので、ビット１２に凹部１４を、ボデ
ィ１３に凸部１５よりなるインロー部を形成し、凹部１
４と凸部１５のいづれか一方又は相方にエポキシ系の接
着剤を塗布したのち嵌め合いにより連結する（図４参
照）。図４において、１６は接着剤を示す。FIG. 3 shows a core bit which is detachably attached to a drill head of a core drill (not shown).
A bit 12 having a diamond tip 11 at its tip;
This shows a two-part core bit divided into the other body 13, in which a concave portion 14 is formed in the bit 12, and a spigot portion including a convex portion 15 is formed in the body 13, and the concave portion 1 is formed.
An epoxy-based adhesive is applied to one or both of the projection 4 and the projection 15 and then connected by fitting (see FIG. 4). In FIG. 4, reference numeral 16 denotes an adhesive.
【００１１】本実施形態のコアビットにおいて、ビット
１２を取換えるときには嵌め合い部分をガスバーナ等で
加熱する。これにより接着剤１６が劣化し、接着強度が
低下するため取外しが可能となる。ビット１２を取外し
たのち、ボディ１３の凸部１５上に付着する接着剤を有
機溶剤にて拭き取り除去する。その後新たなビット１２
を上記と同様にして連結する。In the core bit of this embodiment, when the bit 12 is replaced, the fitted portion is heated by a gas burner or the like. As a result, the adhesive 16 is deteriorated and the adhesive strength is reduced, so that the adhesive 16 can be removed. After removing the bit 12, the adhesive adhered on the convex portion 15 of the body 13 is wiped off with an organic solvent. Then a new bit 12
Are connected in the same manner as described above.
【００１２】[0012]
【発明の効果】請求項１及び３記載の発明によると、嵌
め合い部を加熱して接着手段を溶融又は劣化させること
により容易に分割できること、分割させることにより損
耗部分のみの取換えが可能となり、大口径のコアビット
でも分割することにより運搬が容易で、流通コストを低
減させることができること、嵌め合い用のインロー部を
形成するだけであるから、ネジを切るのと比べ加工が容
易で、加工精度も出し易く、安価であるうえ、ボディの
肉厚を薄くすることができ、切削速度の向上に対処でき
ること等の効果を有する。According to the first and third aspects of the present invention, it is possible to easily divide the fitting means by melting or deteriorating the bonding means by heating the fitting part, and it is possible to replace only the worn part by dividing. Even if the core bit has a large diameter, it can be easily transported by dividing it, and the distribution cost can be reduced.Since it is only necessary to form a spigot for fitting, it is easier to process than cutting a screw. It is easy to obtain accuracy, is inexpensive, has the effect of reducing the wall thickness of the body, and coping with an improvement in cutting speed.
【００１３】請求項２記載の発明によると、接着剤はろ
うに比べ融点が低いため、比較的低温で加熱することに
より劣化して強度が低下し、分割可能となること、接着
剤は加熱により一度劣化すると、元に戻ることはないた
め、円周上を一度加熱するだけで分離可能となり、した
がって現場で携帯用のガスバーナを用いて分離させ取換
えることも可能である。According to the second aspect of the present invention, since the adhesive has a lower melting point than the brazing material, the adhesive deteriorates by heating at a relatively low temperature, the strength is reduced, and the adhesive can be divided. Once deteriorated, it does not return to its original state, so that it can be separated only by heating the circumference once, and therefore it is possible to separate and replace it on site using a portable gas burner.
【図１】三分割型コアビットの分割した正面図。FIG. 1 is a front view of a divided three-part core bit.
【図２】二分割型コアビットの分割した正面図。FIG. 2 is a front view of a divided two-part core bit.
【図３】本発明に係わる二分割型コアビットの分割した
正面図。FIG. 3 is a front view of the split core bit according to the present invention;
【図４】図３に示すコアビットの要部の拡大断面図。FIG. 4 is an enlarged sectional view of a main part of the core bit shown in FIG. 3;
１１・・ダイヤモンドチップ １２・・ビット １３・・ボディ １４・・凹部 １５・・凸部 １６・・接着剤 11. Diamond chip 12. Bit 13. Body 14. Concave part 15. Convex part 16. Adhesive
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三中 達雄 広島市西区商工センター４丁目６番８号 株式会社コンセック内 (72)発明者 小六 修一郎 大阪府堺市鳳北町２丁80番地 大阪ダイヤ モンド工業株式会社内 (72)発明者 戸塚 一夫 大阪府堺市鳳北町２丁80番地 大阪ダイヤ モンド工業株式会社内 (72)発明者 小梁 一久 大阪府堺市鳳北町２丁80番地 大阪ダイヤ モンド工業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuo Minaka 4-6-8, Nishi-ku Business and Commerce Center, Hiroshima City Inside Consec Co., Ltd. (72) Inventor Shuichiro Kogoku 2-80, Hokita-cho, Sakai-shi, Osaka Osaka Inside Mondo Kogyo Co., Ltd. (72) Inventor Kazuo Totsuka 2-80 Hokita-cho, Sakai City, Osaka Prefecture Osaka Diamond Co., Ltd. (72) Kazuhisa Kobashi 2-80 Horikita-cho, Sakai City, Osaka Osaka Mondo Industrial Co., Ltd.
Claims (3)
ー部を形成し、加熱すると溶融若しくは劣化する接着手
段で嵌め合い部を連結したことを特徴とするコアドリル
用コアビット。1. A core bit for a core drill, wherein a plurality of spigot portions for fitting are formed in a plurality of portions, and the fitting portions are connected by an adhesive means which melts or deteriorates when heated.
の接着剤である請求項１記載のコアドリル用コアビッ
ト。2. The core bit for a core drill according to claim 1, wherein the core bit is of a wet type and the bonding means is an adhesive such as a resin.
介在させて嵌め合いにより連結することを特徴とする請
求項１記載のコアドリル用コアビットの製造法。3. The method for manufacturing a core bit for a core drill according to claim 1, wherein the spigot portions of the respective divided portions are connected by fitting through an adhesive means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16872797A JPH1110634A (en) | 1997-06-25 | 1997-06-25 | Bit for core drill and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16872797A JPH1110634A (en) | 1997-06-25 | 1997-06-25 | Bit for core drill and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1110634A true JPH1110634A (en) | 1999-01-19 |
Family
ID=15873313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16872797A Pending JPH1110634A (en) | 1997-06-25 | 1997-06-25 | Bit for core drill and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1110634A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225025A (en) * | 2001-02-06 | 2002-08-14 | Nippon Hume Corp | Core drill |
| JP2003103410A (en) * | 2001-09-28 | 2003-04-08 | Saint-Gobain Norton Kk | Core bit |
| KR100635468B1 (en) | 2005-05-24 | 2006-10-18 | 신한다이아몬드공업 주식회사 | Cutting tools with a separative tip portion and method for coupling tip portion |
| EP1980378A1 (en) * | 2007-04-11 | 2008-10-15 | Carbodrill Srl | Coring tool and connected method of production |
| KR20180017776A (en) * | 2016-08-11 | 2018-02-21 | 전동수 | Road surface cutting apparatus using pot hole repairing |
| CN110035859A (en) * | 2016-12-23 | 2019-07-19 | 喜利得股份公司 | For manufacturing the method for being used for the drilling rod of wet type drill bit |
-
1997
- 1997-06-25 JP JP16872797A patent/JPH1110634A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225025A (en) * | 2001-02-06 | 2002-08-14 | Nippon Hume Corp | Core drill |
| JP2003103410A (en) * | 2001-09-28 | 2003-04-08 | Saint-Gobain Norton Kk | Core bit |
| KR100635468B1 (en) | 2005-05-24 | 2006-10-18 | 신한다이아몬드공업 주식회사 | Cutting tools with a separative tip portion and method for coupling tip portion |
| EP1980378A1 (en) * | 2007-04-11 | 2008-10-15 | Carbodrill Srl | Coring tool and connected method of production |
| KR20180017776A (en) * | 2016-08-11 | 2018-02-21 | 전동수 | Road surface cutting apparatus using pot hole repairing |
| CN110035859A (en) * | 2016-12-23 | 2019-07-19 | 喜利得股份公司 | For manufacturing the method for being used for the drilling rod of wet type drill bit |
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