JPH05245827A - Noncore drill - Google Patents

Noncore drill

Info

Publication number
JPH05245827A
JPH05245827A JP4047041A JP4704192A JPH05245827A JP H05245827 A JPH05245827 A JP H05245827A JP 4047041 A JP4047041 A JP 4047041A JP 4704192 A JP4704192 A JP 4704192A JP H05245827 A JPH05245827 A JP H05245827A
Authority
JP
Japan
Prior art keywords
cutting
tip
cutting tip
abrasive
soft member
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.)
Granted
Application number
JP4047041A
Other languages
Japanese (ja)
Other versions
JP3257602B2 (en
Inventor
Tsunehiro Ezaki
歴弘 江崎
Akiji Kobayashi
明司 小林
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.)
Rasa Industries Ltd
Original Assignee
Rasa Industries 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 Rasa Industries Ltd filed Critical Rasa Industries Ltd
Priority to JP04704192A priority Critical patent/JP3257602B2/en
Publication of JPH05245827A publication Critical patent/JPH05245827A/en
Application granted granted Critical
Publication of JP3257602B2 publication Critical patent/JP3257602B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

PURPOSE:To enhance supply efficiency of material to be ground on the tip face of a cutting tip and cutting efficiency by fixing the cutting tip which is cylindrically formed by holding diamond grains with a binding material in the tip of a shank having a through-hole extending in the axial direction. CONSTITUTION:A noncore drill is constituted of both a shank 14 wherein a through-hole 14a supplying gas for cooling is penetrated in the axial direction and a cylindrical cutting tip 16 fixed in the tip thereof. The cutting tip 16 is preferably constituted of a tip main body 18 and a soft member 20 occupying one part extending in the circumferential direction. Since the material K to be ground is supplied to a cutting part P via the inner hole 16a of the cutting tip 16 and abrades the soft member 20 earlier than the cutting tip 16, a several gap g1 is formed between a face 42a to be cut and the soft member 20. Accordingly the material K to be ground is surely guided through the passing region of the tip face of the cutting tip 16. Thereby the binding material of the cutting tip 16 is abraded and the cutting quality of the cutting tip 16 is maintained without being deteriorated during punching work.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は、コンクリート等の被
削材に穿孔するためのドリルに関し、詳しくは、切削部
位に冷却用気体とともにアルミナ等の研削材を供給して
切削効率の向上を図る乾式のドリル装置に用いられ、切
削チップはその内部に被削材が柱状核として残らないい
わゆるノンコアドリルに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drill for drilling a work material such as concrete. More specifically, it supplies an abrasive such as alumina together with a cooling gas to a cutting site to improve cutting efficiency. A cutting tip used in a dry drilling device relates to a so-called non-core drill in which a work material does not remain as a columnar nucleus.

【0002】[0002]

【従来の技術】従来のノンコアドリルでは、軸方向に貫
通する冷却用流体供給孔としての通孔を有するシャンク
の先端に、ダイヤモンド粒をバインダ材で保持した切削
チップ(通称、ダイヤモンドクラウン部)を固着する構
造となっており、切削チップには、ドリル装置から供給
される空気等の冷却用流体を噴出させるとともに切削屑
を排出させるためのスリットが軸方向に形成されてい
る。
2. Description of the Related Art In a conventional non-core drill, a cutting tip (commonly known as a diamond crown portion) holding diamond grains with a binder material is provided at the tip of a shank having a through hole as a cooling fluid supply hole penetrating in the axial direction. It has a fixed structure, and a slit is formed in the cutting tip in the axial direction for ejecting a cooling fluid such as air supplied from a drill device and discharging cutting chips.

【0003】[0003]

【発明が解決しようとする課題】ところで、この種のド
リルにおいて良好な切削状態が維持されるには、最外面
のダイヤモンド粒が切刃としての役目を終えて損耗ない
し欠落した後に、バインダ材が適度に摩耗して順次内方
の新しいダイヤモンド粒が現れる目立て作用が要求され
る。
By the way, in order to maintain a good cutting state in this type of drill, after the diamond grains on the outermost surface have finished their role as cutting edges and are worn or missing, the binder material is A dressing action is required in which new diamond grains inwardly appear in sequence after being appropriately worn.

【0004】本出願人は、研削材を冷却用気体としての
圧搾空気とともに被削材の切削部位に送り込み、切削チ
ップの冷却と目立て作用とを同時に行うことが、非常に
有益であることを発見し、特開平3ー333584号に
て被削材が切削チップ内部に柱状核として残るコアドリ
ルの穿孔技術を提供している。
The Applicant has found that it is very beneficial to feed the abrasive together with compressed air as a cooling gas to the cutting site of the work material to simultaneously cool the cutting tip and sharpen it. Japanese Unexamined Patent Publication (Kokai) No. 3-333584 provides a drilling technique of a core drill in which a work material remains as a columnar nucleus inside a cutting tip.

【0005】しかしながら、当該技術をノンコアドリル
に適用しようとする場合、従来のものではスリット部分
で冷却用気体による切削チップの冷却と切削屑の排出を
兼ねた搬送流が生じるため、研削材が切削チップの先端
域に届かないまま、すなわち目立てに何ら寄与しないま
まスリットから外部へ排出される。このため、研削材の
目立て作用によるメリットを活かせない現状にある。
However, when the technique is applied to a non-core drill, in the conventional one, since the carrier flow that combines the cooling of the cutting tip with the cooling gas and the discharge of the cutting chips is generated in the slit portion, the abrasive is cut. It is discharged from the slit to the outside without reaching the tip region of the chip, that is, without contributing to the sharpening. For this reason, there is a present situation in which the advantage of the sharpening action of the abrasive cannot be utilized.

【0006】また、穿孔径が12mm程度以下のもので
は切削チップ内部の被削材が搬送流で排出可能に粉砕さ
れ得るが、穿孔径が約12mm以上のものでは粉砕粒径
が大きく、切削屑として排出されずに残存する。このた
め、研削材の供給が阻害されるという問題を抱えてい
る。
Further, when the hole diameter is about 12 mm or less, the work material inside the cutting tip can be crushed so that it can be discharged by the conveying flow, but when the hole diameter is about 12 mm or more, the crushed particle size is large and the cutting waste. Remains without being discharged. Therefore, there is a problem that the supply of the abrasive is hindered.

【0007】ところで、本発明者による実験を踏まえた
考察に基づけば、切削部位における切削状況を総合的に
判断した場合、スリットの存在による冷却効率の良否よ
りも目立ての良否による実質的な切削能率の良否のほう
が全体の切削効率に与える影響が大きいと推測される。
Incidentally, based on the consideration based on the experiment by the present inventor, in the case of comprehensively judging the cutting situation at the cutting portion, the substantial cutting efficiency depending on the sharpness is better than the cooling efficiency due to the existence of the slit. It is presumed that the quality of the item has a greater effect on the overall cutting efficiency.

【0008】また、冷却用気体による冷却機能並びに切
削屑等の排出は、切削チップの表面からランダムに突出
するダイヤモンド粒によって確保される切削チップと被
削材との間の微小間隙のみである程度達成されることも
確認されている。
Further, the cooling function by the cooling gas and the discharge of cutting debris etc. are achieved to some extent only by the minute gap between the cutting tip and the work material secured by the diamond grains randomly protruding from the surface of the cutting tip. It is also confirmed that it will be done.

【0009】従って、冷却用気体による切削チップの冷
却機能並びに切削屑の排出機能の確保に対し、切削チッ
プ先端面への研削材の供給効率を可能な限り優先させる
ことによって、結果的に切削効率の向上がなされること
が期待できる。
Therefore, in order to secure the cooling function of the cutting tip and the discharging function of the cutting waste by the cooling gas, the efficiency of supplying the abrasive to the tip surface of the cutting tip is given priority as much as possible, resulting in the cutting efficiency. Can be expected to be improved.

【0010】そこで、この発明は、切削チップ先端面へ
の研削材の供給効率の向上を図ることができ、よって切
削効率の向上並びに研削材の使用効率の向上を図ること
ができるノンコアドリルの提供をその目的とする。
Therefore, the present invention provides a non-core drill capable of improving the supply efficiency of the abrasive to the tip end surface of the cutting tip, thus improving the cutting efficiency and the use efficiency of the abrasive. Is its purpose.

【0011】また、この発明の他の目的は、径が12m
m程度以上のものでも切削チップ内部の被削材を排出可
能に粉砕でき、研削材の供給効率を小径のものと同程度
に維持できるノンコアドリルを提供することにある。
Another object of the present invention is to have a diameter of 12 m.
An object of the present invention is to provide a non-core drill that can grind the work material inside the cutting tip even if it is about m or more so as to be discharged, and can maintain the supply efficiency of the grinding material at the same level as that of the small diameter drill.

【0012】[0012]

【課題を解決するための手段】この発明は、上記目的を
達成すべく創案されたもので、その特徴は、切削チップ
が円筒状に形成されている構成にある。
The present invention was devised to achieve the above object, and is characterized in that the cutting tip is formed in a cylindrical shape.

【0013】また、この発明によれば、切削チップが円
筒状に形成されているとともにその周方向の一部が軟質
部材で占められている構成とすることができる。
Further, according to the present invention, the cutting tip can be formed in a cylindrical shape and a part of its circumferential direction can be occupied by the soft member.

【0014】また、この発明によれば、切削チップが円
筒状に形成されているとともに筒内の被削材を粉砕する
粉砕片を有し、上記粉砕片はダイヤモンド粒をバインダ
材で保持して形成されている構成とすることができる。
Further, according to the present invention, the cutting tip is formed in a cylindrical shape and has a crushed piece for crushing the work material in the cylinder. The crushed piece holds diamond grains with a binder material. It can be configured to be formed.

【0015】[0015]

【作用】この発明によれば、ドリル装置から供給された
研削材を含む冷却用気体がシャンクを経て切削部位に供
給される。供給された研削材は円筒状をなす切削チップ
の形状によって、目立てに寄与しない状態での外方への
通り抜けを阻止され、切削チップのダイヤモンド粒の突
出による切削チップと被削材との間の微小間隙から冷却
用気体とともに外方へ案内される。研削材は切削チップ
と被削材との間の微小間隙を通過することによって、周
方向における切削チップの先端面域に供給される。
According to the present invention, the cooling gas containing the abrasive supplied from the drill device is supplied to the cutting site via the shank. Due to the shape of the cylindrical cutting tip, the supplied abrasive is prevented from passing through in the state that it does not contribute to dressing, and the diamond tip projection between the cutting tip and the work material It is guided outward from the minute gap together with the cooling gas. The abrasive is supplied to the tip surface area of the cutting tip in the circumferential direction by passing through a minute gap between the cutting tip and the work material.

【0016】また、この発明によれば、供給された研削
材は軟質部材の存在によって切削チップからの逃げを阻
止されるとともに、切削チップより早く摩耗することに
よって形成される軟質部材部位の隙間から冷却流体とと
もに外方に案内される。研削材は軟質部材部位の隙間を
通過することによって、周方向における切削チップの先
端面域に供給される。
Further, according to the present invention, the supplied abrasive is prevented from escaping from the cutting tip due to the presence of the soft member, and from the gap of the soft member portion formed by being worn faster than the cutting tip. Guided outward with the cooling fluid. The abrasive is supplied to the tip surface area of the cutting tip in the circumferential direction by passing through the gap in the soft member portion.

【0017】また、この発明によれば、粉砕片によって
切削チップ内の被削材が細かく粉砕され、冷却用気体に
よる搬送流で外方へ排出される。
Further, according to the present invention, the work piece in the cutting tip is finely crushed by the crushed pieces and is discharged to the outside by the carrier flow of the cooling gas.

【0018】[0018]

【実施例】図1乃至図4はこの発明の一実施例を示し、
ドリルが略水平となるいわゆる横切りでの切削例であ
る。ドリル装置2には、ノンコアドリル4を有する装置
本体6と、切削屑を吸引する集塵手段8と、図示しない
コンプレッサ等の空気供給源に接続される給気管10
と、研削材Kを供給する研削材供給手段12とが備えら
れている。
1 to 4 show an embodiment of the present invention,
This is an example of so-called horizontal cutting in which the drill is substantially horizontal. The drill device 2 includes a device body 6 having a non-core drill 4, dust collecting means 8 for sucking cutting chips, and an air supply pipe 10 connected to an air supply source such as a compressor (not shown).
And an abrasive material supply means 12 for supplying the abrasive material K.

【0019】ノンコアドリル4は、軸方向へ貫通する冷
却用気体供給路としての通孔14aを有する細径のシャ
ンク14と、このシャンク14の先端にろう付け等の手
段で固着された円筒状の切削チップ16(穿孔径12m
m程度以下)とから構成されている。切削チップ16
は、図2及び図3に示すように、切削チップ本体18
と、周方向の一部分を占める軟質部材20とから構成さ
れている。切削チップ本体18は、ダイヤモンド粒をメ
タルボンド等のバインダ材で保持して形成されており、
軟質部材20は例えば切削チップ16のメタルボンドと
同等(例えばダイヤモンド粒を含まず、メタルボンドの
硬度が同一)か軟質のメタルボンドで形成されるもので
ある。符号16aは内孔を示す。
The non-core drill 4 has a small-diameter shank 14 having a through hole 14a as a cooling gas supply passage that penetrates in the axial direction, and a cylindrical shape fixed to the tip of the shank 14 by means of brazing or the like. Cutting tip 16 (drilling diameter 12m
m or less). Cutting tip 16
Is a cutting tip body 18 as shown in FIGS.
And a soft member 20 occupying a part in the circumferential direction. The cutting tip body 18 is formed by holding diamond grains with a binder material such as a metal bond,
The soft member 20 is formed by, for example, a metal bond equivalent to the metal bond of the cutting tip 16 (for example, diamond grains are not included and the hardness of the metal bond is the same) or a soft metal bond. Reference numeral 16a indicates an inner hole.

【0020】装置本体6には、両端部をベアリング2
2,24で支持されるとともに内蔵の電動モータで回転
駆動される中空回転軸26が備えられており、中空回転
軸26の先端はジョイントナット28でシャンク14に
連結されている。また、中空回転軸26の後端はシール
ジョイント30を介して給気管10に直結態様で接続さ
れている。
Both ends of the device body 6 are provided with bearings 2.
A hollow rotary shaft 26, which is supported by Nos. 2 and 24 and is rotationally driven by a built-in electric motor, is provided, and the tip of the hollow rotary shaft 26 is connected to the shank 14 by a joint nut 28. The rear end of the hollow rotary shaft 26 is directly connected to the air supply pipe 10 via a seal joint 30.

【0021】集塵手段8は、ノンコアドリル4に嵌合さ
れて切削部位を取り囲む吸引ヘッド32と、この吸引ヘ
ッド32と図示しない集塵機とを接続する集塵ホース3
4とから構成されている。
The dust collecting means 8 is fitted to the non-core drill 4 and surrounds the cutting site, and a dust collecting hose 3 for connecting the suction head 32 and a dust collector (not shown).
4 and.

【0022】研削材供給手段12は、研削材Kが収容さ
れる研削材タンク36と、給気管10と研削材タンク3
6とを接続する研削材供給路38と、この研削材供給路
38に設けられる開閉バルブ40とから構成されてい
る。図1において符号42はコンクリート等の被削材を
示す。
The abrasive supply means 12 includes an abrasive tank 36 containing the abrasive K, the air supply pipe 10 and the abrasive tank 3.
6 and an opening / closing valve 40 provided in the abrasive material supply passage 38. In FIG. 1, reference numeral 42 indicates a work material such as concrete.

【0023】次にドリル装置2による穿孔動作を説明す
る。ノンコアドリル4を回転駆動しながら移動させる
と、切削チップ16が被削材42に食い付いて穿孔が進
行する。穿孔に伴って、給気管10を介して供給される
圧搾空気Aが中空回転軸26を経てノンコアドリル4に
送り込まれ、また、研削材供給手段12の開閉バルブ4
0が開かれ、これによって研削材Kが研削材供給路38
から給気管10内に送り込まれる。給気管10内に供給
された研削材Kは圧搾空気Aの流れで搬送され、ノンコ
アドリル4に送り込まれる。
Next, the drilling operation by the drill device 2 will be described. When the non-core drill 4 is moved while being rotationally driven, the cutting tip 16 bites the work material 42 and the drilling proceeds. Along with the perforation, compressed air A supplied via the air supply pipe 10 is sent to the non-core drill 4 via the hollow rotary shaft 26, and the opening / closing valve 4 of the abrasive material supplying means 12 is also supplied.
0 is opened, whereby the abrasive material K is supplied to the abrasive material supply passage 38.
Is fed into the air supply pipe 10. The abrasive material K supplied into the air supply pipe 10 is conveyed by the flow of the compressed air A and sent into the non-core drill 4.

【0024】ノンコアドリル4内に送り込まれた研削材
Kはシャンク14の通孔14a、切削チップ16の内孔
16aを経て切削部位Pへ供給される。切削部位Pで
は、軟質部材20が切削チップ16より早く摩耗するの
で、被削面42aと軟質部材20との間に常に若干の隙
間g1 が生じ、この隙間g1 が圧搾空気Aによる搬送流
の通路としてなる。従って、研削材Kも矢印Eに示すよ
うに隙間g1 、すなわち、切削チップ16の先端面の通
過域を確実に案内されることになり、これによって研削
材Kのほぼ全量が切削チップ16の目立てに作用し得る
域に供給されることになる。
The abrasive material K fed into the non-core drill 4 is supplied to the cutting portion P through the through hole 14a of the shank 14 and the inner hole 16a of the cutting tip 16. At the cutting portion P, the soft member 20 wears faster than the cutting tip 16, so that a slight gap g 1 is always formed between the work surface 42a and the soft member 20, and this gap g 1 is the flow of the compressed air A. It becomes a passage. Therefore, the abrasive material K is also surely guided in the gap g 1 as shown by the arrow E, that is, the passing area of the tip end surface of the cutting tip 16, whereby almost the entire amount of the abrasive material K is in the cutting tip 16. It will be supplied to the area where it can act for sharpening.

【0025】これによって切削チップ16のバインダ材
が研削材Kとの接触で摩耗してドレッシング作用が促さ
れ、切削チップ16の切れ味が穿孔作業中全体に亘って
低下することなく維持される。研削材Kの供給効率の向
上によって、切削効率の向上が得られるばかりでなく、
研削材Kの適正量による使用効率の向上を図ることがで
きる。なお、切削チップ16が穿孔径12mm程度以下
の大きさであるので、切削チップ16内の被削材42は
切削チップ16の回転に伴って細かく粉砕され、圧搾空
気Aの搬送流で排出される。
As a result, the binder material of the cutting tip 16 is worn by the contact with the abrasive material K to promote the dressing action, and the sharpness of the cutting tip 16 is maintained throughout the drilling work without lowering. Not only can the cutting efficiency be improved by improving the supply efficiency of the abrasive material K, but
It is possible to improve the use efficiency by using an appropriate amount of the abrasive material K. Since the cutting tip 16 has a drilling diameter of about 12 mm or less, the work material 42 in the cutting tip 16 is finely crushed as the cutting tip 16 rotates and is discharged in the carrier flow of the compressed air A. ..

【0026】軟質部材20の適正な摩耗による隙間gの
存在によって圧搾空気Aによる冷却機能も有効に維持さ
れ、切削効率の向上並びに作業能率の向上がなされる。
また、この場合、研削材Kは切削チップ16の目立てに
寄与するばかりでなく、ダイヤモンド粒と同様に切刃と
しての機能を呈するものである。なお、研削材Kも使用
後は圧搾空気Aや切削屑Dとともに集塵機に吸引され
る。
Due to the existence of the gap g due to the proper wear of the soft member 20, the cooling function by the compressed air A is effectively maintained, and the cutting efficiency and the work efficiency are improved.
Further, in this case, the abrasive K not only contributes to the sharpening of the cutting tip 16 but also functions as a cutting edge like the diamond grains. The abrasive K is also sucked into the dust collector together with the compressed air A and the cutting dust D after use.

【0027】次に図5乃至図7は切削チップが全てダイ
ヤモンドチップとしてなる例である。切削チップ45は
内孔45aを有する円筒形状に形成されているととも
に、全体がダイヤモンド粒をメタルボンドで保持して形
成されている。この例ではダイヤモンド粒の総量を上記
例と同一とした。すなわち、軟質部材20の容積分ダイ
ヤモンド粒の分布密度が低くなっている。
Next, FIGS. 5 to 7 show examples in which the cutting tips are all diamond tips. The cutting tip 45 is formed in a cylindrical shape having an inner hole 45a, and is entirely formed by holding diamond grains with a metal bond. In this example, the total amount of diamond grains was the same as in the above example. That is, the distribution density of diamond grains is low by the volume of the soft member 20.

【0028】切削部位Pでは図7に示すように、切削チ
ップ45の先端面から突出するダイヤモンド粒45bに
よって切削チップ45と被削面42aとの間に常時隙間
2が形成されており、この隙間g2 が圧搾空気Aによ
る搬送流の通路としてなる。
At the cutting portion P, as shown in FIG. 7, a gap g 2 is always formed between the cutting tip 45 and the work surface 42a by the diamond grains 45b protruding from the tip end surface of the cutting tip 45. g 2 serves as a passage for the flow of the compressed air A.

【0029】研削材Kは搬送流によって隙間g2 内に供
給され、切削屑Dとともに外方へ排出される。隙間g2
は極めて狭い空間であるので、供給された研削材Kは殆
どが切削チップ45の目立てに寄与する状態となり、こ
の状態が切削チップ45の全周に亘って維持される。
The abrasive K is supplied into the gap g 2 by the carrier flow and is discharged outward together with the cutting waste D. Gap g 2
Is a very narrow space, most of the supplied abrasive K contributes to the sharpening of the cutting tip 45, and this state is maintained over the entire circumference of the cutting tip 45.

【0030】次に図8及び図9は穿孔径が12mm程度
以上の大きさの切削チップを有する例である。切削チッ
プ46は内孔46aを有する円筒状に形成されており、
軟質部材で形成された筒状本体48と、周方向の一部分
を占めるとともに内孔46aに突出する粉砕片50とか
ら構成されている。
Next, FIGS. 8 and 9 show an example having a cutting tip having a diameter of 12 mm or more. The cutting tip 46 is formed in a cylindrical shape having an inner hole 46a,
It is composed of a cylindrical main body 48 formed of a soft member, and a crushed piece 50 that occupies a part in the circumferential direction and projects into the inner hole 46a.

【0031】粉砕片50はダイヤモンド粒をバインダ材
で保持して形成されており、内孔46a内の被削材42
を細かく粉砕する役割をなすとともに、実質的な切削チ
ップの役割をなす。また、粉砕片50のチップ中心位置
には、周速0による目立て作用の消失を回避するために
透孔50aが形成されている。粉砕片50の存在によっ
て、穿孔径が大きくても切削チップ46内の被削材42
を圧搾空気Aの搬送流で排出可能な大きさに粉砕するこ
とができる。また、この例によれば、ダイヤモンドの使
用量を効率的にできるので切削チップ46のコストの低
減を図れるメリットもある。
The crushed pieces 50 are formed by holding diamond grains with a binder material, and the work material 42 in the inner hole 46a is formed.
It not only serves to finely pulverize, but also serves as a substantial cutting tip. Further, a through hole 50a is formed at the center position of the chip of the crushed piece 50 in order to prevent the dressing action from disappearing due to the peripheral speed of 0. Due to the existence of the crushed pieces 50, the work material 42 in the cutting tip 46 is large even if the drilling diameter is large.
Can be crushed to a size that can be discharged by the carrier flow of the compressed air A. Further, according to this example, since the amount of diamond used can be made efficient, there is an advantage that the cost of the cutting tip 46 can be reduced.

【0032】次に図10及び図11は粉砕片を有するタ
イプの変形例を示す。切削チップ52は内孔52aを有
する円筒状に形成されており、ダイヤモンド粒をバイン
ダ材で保持した切削チップ本体54と、切削チップ本体
54と材質が同一で内孔52aの中心を横切る状態に一
体に形成される粉砕片56とから構成されている。粉砕
片56のチップ中心位置には上記例と同様に透孔56a
が形成されている。粉砕片56による粉砕機能は上記例
と同様である。
Next, FIGS. 10 and 11 show a modification of the type having a crushed piece. The cutting tip 52 is formed in a cylindrical shape having an inner hole 52a, and the cutting tip body 54 holding diamond grains with a binder material and the cutting tip body 54 are made of the same material and traverse the center of the inner hole 52a. It is composed of crushed pieces 56 formed in. At the center position of the chip of the crushed piece 56, the through hole 56a is formed as in the above example.
Are formed. The crushing function of the crushed pieces 56 is the same as in the above example.

【0033】[0033]

【発明の効果】この発明によれば、研削材を切削チップ
の目立てに作用し得る状態に効率的に供給することがで
きるので、切削効率の向上を図ることができるととも
に、研削材の使用効率の向上を図ることができる。
According to the present invention, the abrasive can be efficiently supplied in a state where it can act on the setting of the cutting tip, so that the cutting efficiency can be improved and the use efficiency of the abrasive can be improved. Can be improved.

【0034】また、穿孔径が大きい範囲においても、切
削チップ内の被削材を細かく粉砕することができるの
で、研削材供給による目立て機能を小径のものと同等に
得ることができる。
Further, even in the range where the drilling diameter is large, the work material in the cutting tip can be finely crushed, so that the dressing function by supplying the abrasive material can be obtained in the same manner as the one having a small diameter.

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

【図1】この発明に係るノンコアドリルの一実施例を示
す使用状態の概要側面図である。
FIG. 1 is a schematic side view of a non-core drill according to an embodiment of the present invention in a use state.

【図2】要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part.

【図3】図2における底面図である。FIG. 3 is a bottom view of FIG.

【図4】切削部位における研削材の供給状態並びに切削
屑の排出状態を示す要部拡大斜視図である。
FIG. 4 is an enlarged perspective view of an essential part showing a supply state of an abrasive material and a discharge state of cutting chips at a cutting portion.

【図5】他の例を示す要部拡大断面図である。FIG. 5 is an enlarged sectional view of an essential part showing another example.

【図6】図5における底面図である。FIG. 6 is a bottom view of FIG.

【図7】図5で示した例の研削材の供給状態並びに切削
屑の排出状態を示す概要断面図である。
FIG. 7 is a schematic cross-sectional view showing a supply state of abrasives and a discharge state of cutting wastes in the example shown in FIG.

【図8】他の例を示す要部拡大断面図である。FIG. 8 is an enlarged sectional view of an essential part showing another example.

【図9】図8における底面図である。9 is a bottom view of FIG.

【図10】他の例を示す要部拡大断面図である。FIG. 10 is an enlarged sectional view of an essential part showing another example.

【図11】図10における底面図である。11 is a bottom view of FIG.

【符号の説明】[Explanation of symbols]

14 シャンク 14a 通孔 16,45,46,52 切削チップ 20 軟質部材 50,56 粉砕片 42 被削材 14 Shank 14a Through Hole 16, 45, 46, 52 Cutting Tip 20 Soft Member 50, 56 Crushed Piece 42 Work Material

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】軸方向に貫通する通孔を有するシャンクの
先端にダイヤモンド粒をバインダ材で保持した切削チッ
プが固着されたノンコアドリルにおいて、上記切削チッ
プが円筒状に形成されていることを特徴とするノンコア
ドリル。
1. A non-core drill in which a cutting tip having diamond grains held by a binder material is fixed to the tip of a shank having a through hole extending in the axial direction, wherein the cutting tip is formed in a cylindrical shape. And a non-core drill.
【請求項2】上記切削チップの周方向の一部が軟質部材
で占められている請求項1記載のノンコアドリル。
2. The non-core drill according to claim 1, wherein a part of the cutting tip in the circumferential direction is occupied by a soft member.
【請求項3】軸方向に貫通する通孔を有するシャンクの
先端に切削チップが固着されたノンコアドリルにおい
て、 上記切削チップが円筒状に形成されているとともに筒内
の被削材を粉砕する粉砕片を有し、上記粉砕片はダイヤ
モンド粒をバインダ材で保持して形成されていることを
特徴とするノンコアドリル。
3. A non-core drill in which a cutting tip is fixed to the tip of a shank having a through hole penetrating in the axial direction, wherein the cutting tip is formed in a cylindrical shape and crushes a work material in the cylinder. A non-core drill having a piece, wherein the crushed piece is formed by holding diamond grains with a binder material.
JP04704192A 1992-03-04 1992-03-04 Non-core drill Expired - Lifetime JP3257602B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04704192A JP3257602B2 (en) 1992-03-04 1992-03-04 Non-core drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04704192A JP3257602B2 (en) 1992-03-04 1992-03-04 Non-core drill

Publications (2)

Publication Number Publication Date
JPH05245827A true JPH05245827A (en) 1993-09-24
JP3257602B2 JP3257602B2 (en) 2002-02-18

Family

ID=12764085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04704192A Expired - Lifetime JP3257602B2 (en) 1992-03-04 1992-03-04 Non-core drill

Country Status (1)

Country Link
JP (1) JP3257602B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1852233A1 (en) * 2005-01-12 2007-11-07 Kabushiki Kaisha Miyanaga Water feed apparatus for core drill
WO2008018559A1 (en) 2006-08-10 2008-02-14 Max Co., Ltd. Noncoring drill bit
JP2015006725A (en) * 2013-06-25 2015-01-15 ショット アクチエンゲゼルシャフトSchott AG Tool crown and glass or glass ceramic product producible using the tool crown
CN110091437A (en) * 2019-06-11 2019-08-06 倪军 A kind of negtive pressure dusting electric drill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1852233A1 (en) * 2005-01-12 2007-11-07 Kabushiki Kaisha Miyanaga Water feed apparatus for core drill
EP1852233A4 (en) * 2005-01-12 2013-10-30 Miyanaga Kk Water feed apparatus for core drill
WO2008018559A1 (en) 2006-08-10 2008-02-14 Max Co., Ltd. Noncoring drill bit
US8047193B2 (en) 2006-08-10 2011-11-01 Max Co., Ltd. Non-core drill bit
JP2015006725A (en) * 2013-06-25 2015-01-15 ショット アクチエンゲゼルシャフトSchott AG Tool crown and glass or glass ceramic product producible using the tool crown
US10926431B2 (en) 2013-06-25 2021-02-23 Schott Ag Tool head and glass or glass ceramic article producible using the tool head
CN110091437A (en) * 2019-06-11 2019-08-06 倪军 A kind of negtive pressure dusting electric drill

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Publication number Publication date
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