JPS63306813A - Super hard drill - Google Patents
Super hard drillInfo
- Publication number
- JPS63306813A JPS63306813A JP13937687A JP13937687A JPS63306813A JP S63306813 A JPS63306813 A JP S63306813A JP 13937687 A JP13937687 A JP 13937687A JP 13937687 A JP13937687 A JP 13937687A JP S63306813 A JPS63306813 A JP S63306813A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- tip
- carbide
- drill
- super 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
Links
- 239000003921 oil Substances 0.000 abstract description 55
- 239000010730 cutting oil Substances 0.000 abstract description 18
- 238000001816 cooling Methods 0.000 abstract description 8
- 229910003460 diamond Inorganic materials 0.000 abstract description 2
- 239000010432 diamond Substances 0.000 abstract description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ドリル先端に超硬チップを固着した超硬ド
リルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a carbide drill having a carbide tip fixed to the tip of the drill.
従来、超硬ドリルにはドリル先端に超硬チップをろう付
けしたものがある。このような超硬ドリルは、冷却効果
を与えるため、内部に切削油の通路となる油穴を穿設し
たものが見られる。この油穴付きの超硬ドリルは、第７
図及び第８図に示すように、同ドリル（９）の先端に凹
部（１０）を形成し、この凹部（１０）に超硬チップ（
１１）を嵌入してろう付けすると共に、ドリル内部に油
穴（１２）を穿設している。油穴（１２）は、シャンク
側の先端からドリル先端に向ってドリル中心を貫通し、
ドリル先端直前で分岐している。この分岐部（１３）は
、傾斜して先端逃げ面（１４）に達する。Conventionally, some carbide drills have a carbide tip brazed to the tip of the drill. In order to provide a cooling effect, some of these carbide drills have oil holes drilled inside them to serve as passages for cutting oil. This carbide drill with oil hole is the 7th
As shown in the figure and FIG. 8, a recess (10) is formed at the tip of the drill (9), and a carbide tip (
11) is inserted and brazed, and an oil hole (12) is bored inside the drill. The oil hole (12) passes through the center of the drill from the tip on the shank side toward the tip of the drill.
It branches just before the drill tip. This branch (13) slopes and reaches the tip flank (14).
しかしながら、上記油穴付き超硬ドリル（１）は、油穴
（１２）を超硬ドリル側に形成しているため、次のよう
な欠点があった。However, the carbide drill with oil hole (1) has the following drawbacks because the oil hole (12) is formed on the carbide drill side.
■ 分岐部（１３）を先端逃げ面（１４）に向って傾斜
させて穿設することは、加工上難しく、多（の手間と製
作費を必要としていた。■ It is difficult to drill the branch part (13) at an angle toward the tip flank face (14) in terms of processing, and requires a lot of effort and manufacturing cost.
■ 分岐部（１３）の排出口は先端逃げ面（１４）にあ
り超硬チップ（１１）から離れているため、切削熱の発
生する超硬チップに切削油を的確に供給できず、冷却効
果は十分でなかった。しかも、分岐部（１３）は、直接
超硬チップ（１１）の嵌入部分を冷却するものではない
ため、超硬チップ（１１）の外表面だけでなくドリル内
部の冷却効果も十分ではなかった。以上の結果、ドリル
先端が過熱してろう付けのろうが溶けて超硬チップ（１
１）が脱落する、切削性能が低下する、等の不都合が発
生していた。■ Since the outlet of the branch part (13) is located on the tip flank (14) and is away from the carbide tip (11), cutting oil cannot be accurately supplied to the carbide tip where cutting heat is generated, resulting in poor cooling effect. was not enough. Moreover, since the branch part (13) does not directly cool the part into which the carbide tip (11) is inserted, the cooling effect not only on the outer surface of the carbide tip (11) but also inside the drill was not sufficient. As a result of the above, the drill tip overheated and the brazing wax melted, causing the carbide tip (1
Inconveniences such as 1) falling off and a decrease in cutting performance have occurred.
そこで、この発明は、このような従来の油穴付き超硬ド
リルの欠点に鑑み、超硬ドリルに簡単容易に切削油の通
路を形成でき、しかも切削油の冷却効果を向上させるこ
とを目的としている。Therefore, in view of the shortcomings of conventional carbide drills with oil holes, the present invention aims to provide a carbide drill with a passage for cutting oil that can be easily formed and to improve the cooling effect of the cutting oil. There is.
この発明は、ドリル本体（３）先端に超硬チップ（２）
を固着した超硬ドリルにおいて、ドリル本体（３）にシ
ャンク先端がら超硬チップ（２）に至る油穴（５）を穿
設し、一方超硬チップ（２）に油穴（５）と連通ずる油
溝（８）を形成し、該油溝（８）を先端刃部（７）にま
で形成したものである。This invention has a carbide tip (2) at the tip of the drill body (3).
In the carbide drill with a fixed carbide, an oil hole (5) is drilled in the drill body (3) from the tip of the shank to the carbide tip (2), and an oil hole (5) is drilled in the carbide tip (2) to communicate with the oil hole (5). A communicating oil groove (8) is formed, and the oil groove (8) is formed up to the tip end portion (7).
この発明は、超硬チップ（２）の油溝（８）をドリル本
体（３）の油穴（５）に連通ずると共に先端刃部（７）
にまで形成しているので、油ｉＪ！（８）は、切削油の
通路となり、切削油を油穴（５）から先端刃部（７）に
まで供給する。This invention allows the oil groove (8) of the carbide tip (2) to communicate with the oil hole (5) of the drill body (3), and also connects the oil groove (8) of the carbide tip (2) to the oil hole (5) of the drill body (3).
Oil iJ! (8) serves as a passage for cutting oil, and supplies cutting oil from the oil hole (5) to the tip end portion (7).
油溝（８）は超硬チップ（２）の表面を溝加工するだけ
で形成できるので、製造は簡単容易である。Since the oil groove (8) can be formed by simply grooving the surface of the carbide tip (2), manufacturing is simple and easy.
また、油溝（８）により、切削油は、超硬チップ（２）
の表面を通過し、切削を行う先端刃部（７）に供給され
る。従って、超硬チップ（２）の嵌入部分の冷却と、先
端刃部（７）への的確な供給を同時に行うことができる
。In addition, the oil groove (8) allows cutting oil to flow to the carbide tip (2).
It passes through the surface of the blade and is supplied to the cutting edge section (7) that performs cutting. Therefore, it is possible to cool the insertion portion of the carbide tip (2) and accurately supply the tip to the cutting edge portion (7) at the same time.
以下、この発明の一実施例を図面に基づき説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図及び第２図は、超硬ドリルの先端部分を示すもの
であり、（１）は超硬ドリル、（２）は超硬チップであ
る。FIGS. 1 and 2 show the tip portion of a carbide drill, in which (1) is a carbide drill and (2) is a carbide tip.
超硬ドリル（１）は、ドリル本体（３）の先端に凹部（
４）を設け、この凹部（４）に超硬チップ（２）をろう
付けしたものである。ドリル本体（３）の軸心には油穴
（５）を穿設してあり、この油穴（５）はシャンク先端
（図示せず）から凹部（４）の底面（４ａ）にまで穿設
されている。The carbide drill (1) has a recess (
4), and a carbide tip (2) is brazed to this recess (4). An oil hole (5) is drilled in the axis of the drill body (3), and this oil hole (5) is drilled from the tip of the shank (not shown) to the bottom surface (4a) of the recess (4). has been done.
超硬チップ（２）は、第４図乃至第６図に示すように、
後面に油溜め部（６）を形成している。The carbide tip (2), as shown in FIGS. 4 to 6,
An oil reservoir (6) is formed on the rear surface.
そして、超硬チップ（２）の側面に、油溜め部（６）か
ら先端刃部（７）に至る油濁（８）を形成している。油
溝（８）は、非常に硬い超硬チップ（２）であってもダ
イヤモンド砥石で簡単に溝加工することができる。An oil stain (8) is formed on the side surface of the carbide tip (2) from the oil reservoir (6) to the tip blade (7). The oil groove (8) can be easily grooved with a diamond grindstone even in a very hard carbide tip (2).
以上の構成から、超硬チップ（２）をドリル本体（３）
の先端に固着すると、油溝（８）は、油溜め部（６）を
介してドリル本体（３）の油穴（５）と連通し、切削油
の通路となる。超硬ドリル（１）に供給された切削油は
、油穴（５）から油溜め部（６）に送られ、さらに油溜
め部（６）から油溝（８）を通過して先端刃部（７）か
ら排出される。From the above configuration, the carbide tip (2) is attached to the drill body (3).
When the oil groove (8) is fixed to the tip of the drill body (3), the oil groove (8) communicates with the oil hole (5) of the drill body (3) via the oil reservoir (6) and becomes a passage for cutting oil. The cutting oil supplied to the carbide drill (1) is sent from the oil hole (5) to the oil reservoir (6), and then passes through the oil groove (8) from the oil reservoir (6) to the tip blade. (7).
従って、切削油は、油＊ （８）を通過する間に超硬チ
ップ（２）を冷却する。しかも、切削油は先端刃部（７
）から排出されるので、的確に切削箇所を冷却すること
ができる。そのため、切削油の冷却効果を非常に効率の
よいものにすることができる。また、切削油を先端刃部
（７）に的確に供給することは、切屑の排出性を向上さ
せることにもなる。The cutting oil thus cools the carbide tip (2) while passing through the oil* (8). Moreover, the cutting oil is at the tip of the blade (7
), the cutting area can be cooled accurately. Therefore, the cooling effect of the cutting oil can be made very efficient. In addition, accurately supplying cutting oil to the tip end portion (7) also improves the evacuation of chips.
さらに、油溜め部（６）を形成しているので、超硬チッ
プ（２）が嵌入する最深部を冷却することができ、ドリ
ル本体（３）も含めて内部から広範囲に冷却することが
できる。同時に、油溜め部（６）により、油溝（８）へ
の切削油の供給を円滑にすることができる。Furthermore, since an oil reservoir (6) is formed, the deepest part where the carbide tip (2) is inserted can be cooled, and a wide area including the drill body (3) can be cooled from inside. . At the same time, the oil reservoir (6) allows smooth supply of cutting oil to the oil groove (8).
この発明は、超硬チップ（２）に油？ＩＩＩ（８）を形
成し切削油の通路としているので、超硬ドリルへの道路
の形成を簡単容易にし、超硬チップ（２）の外表面及び
ドリル内部のいずれの冷却効果についてもその効果を向
上させることができる。This invention uses oil on the carbide tip (2)? III (8) is formed to serve as a passage for cutting oil, making it easy to form a road to the carbide drill, and improving the cooling effect on both the outer surface of the carbide tip (2) and the inside of the drill. can be improved.
第１図乃至第６図はこの発明の一実施例を示す図面。第
１図は超硬ドリルの正面図。第２図は超硬ドリルの先端
部分の断面図。第３図は超硬チップをろう付けする前に
おけるドリル本体の先端部分を示す断面図。第４図は超
硬チップの平面図。
第５図は同正面図。第６図は超硬チップと油穴の連通状
態を示す説明図。
第７図及び第８図は従来の油穴付き超硬ドリルを例示す
る図面。第７図は同正面図。第８図は同ドリルの先端部
分の側面図。
（２）・・・超硬チップ （３）・・・ドリル本体 （
４）・・・凹部 （４ａ）・・・凹部底面 （５）・・
・油穴（６）・・・油溜め部 （７）・・・先端刃部
（８）・・・油溝1 to 6 are drawings showing one embodiment of the present invention. Figure 1 is a front view of the carbide drill. Figure 2 is a cross-sectional view of the tip of the carbide drill. FIG. 3 is a sectional view showing the tip portion of the drill body before brazing the carbide tip. FIG. 4 is a plan view of the carbide tip. FIG. 5 is a front view of the same. FIG. 6 is an explanatory diagram showing the state of communication between the carbide tip and the oil hole. FIG. 7 and FIG. 8 are drawings illustrating a conventional carbide drill with an oil hole. Figure 7 is a front view of the same. Figure 8 is a side view of the tip of the drill. (2)...Carbide tip (3)...Drill body (
4)...Recessed part (4a)...Recessed part bottom (5)...
・Oil hole (6)...Oil reservoir (7)...Tip blade part
(8)...Oil groove
Claims (1)
た超硬ドリルにおいて、ドリル本体（３）にシャンク先
端から超硬チップ（２）に至る油穴（５）を穿設し、一
方超硬チップ（２）に油穴（５）と連通する油溝（８）
を形成し、該油溝（８）を先端刃部（７）にまで形成し
たことを特徴とする超硬ドリル。1. In a carbide drill with a carbide tip (2) fixed to the tip of the drill body (3), an oil hole (5) is drilled in the drill body (3) from the tip of the shank to the carbide tip (2), On the other hand, there is an oil groove (8) in the carbide tip (2) that communicates with the oil hole (5).
A carbide drill characterized in that the oil groove (8) is formed up to the tip end portion (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13937687A JPS63306813A (en) | 1987-06-03 | 1987-06-03 | Super hard drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13937687A JPS63306813A (en) | 1987-06-03 | 1987-06-03 | Super hard drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63306813A true JPS63306813A (en) | 1988-12-14 |
Family
ID=15243881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13937687A Pending JPS63306813A (en) | 1987-06-03 | 1987-06-03 | Super hard drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63306813A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020020625A (en) * | 2001-06-07 | 2002-03-15 | 이정수 | Insert drill |
| JP2006239826A (en) * | 2005-03-04 | 2006-09-14 | Yunitakku Kk | Drill head |
| US7182556B2 (en) * | 2001-12-07 | 2007-02-27 | Mitsubishi Materials Corporation | Drill and throwaway insert |
| US20120308319A1 (en) * | 2011-06-03 | 2012-12-06 | Karthik Sampath | Rotary cutting tool having coated cutting tip and coolant holes and method of fabricating |
| CN103573185A (en) * | 2013-07-16 | 2014-02-12 | 昆山巨德泰精密机械有限公司 | Drilling bit with radiating hole in center of bottom part |
| EP2962796A1 (en) * | 2014-07-04 | 2016-01-06 | Jakob Lach GmbH & Co. KG | Cutting tool, in particular reaming, milling or drilling tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912511B2 (en) * | 1975-03-27 | 1984-03-23 | トラスカンデイカ アクチエンゲゼルシヤフト | ship dock |
-
1987
- 1987-06-03 JP JP13937687A patent/JPS63306813A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912511B2 (en) * | 1975-03-27 | 1984-03-23 | トラスカンデイカ アクチエンゲゼルシヤフト | ship dock |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020020625A (en) * | 2001-06-07 | 2002-03-15 | 이정수 | Insert drill |
| US7182556B2 (en) * | 2001-12-07 | 2007-02-27 | Mitsubishi Materials Corporation | Drill and throwaway insert |
| JP2006239826A (en) * | 2005-03-04 | 2006-09-14 | Yunitakku Kk | Drill head |
| JP4707414B2 (en) * | 2005-03-04 | 2011-06-22 | ユニタック株式会社 | Drill head |
| US20120308319A1 (en) * | 2011-06-03 | 2012-12-06 | Karthik Sampath | Rotary cutting tool having coated cutting tip and coolant holes and method of fabricating |
| CN103573185A (en) * | 2013-07-16 | 2014-02-12 | 昆山巨德泰精密机械有限公司 | Drilling bit with radiating hole in center of bottom part |
| EP2962796A1 (en) * | 2014-07-04 | 2016-01-06 | Jakob Lach GmbH & Co. KG | Cutting tool, in particular reaming, milling or drilling tool |
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