JPH0326451A - Core drill - Google Patents
Core drillInfo
- Publication number
- JPH0326451A JPH0326451A JP15949189A JP15949189A JPH0326451A JP H0326451 A JPH0326451 A JP H0326451A JP 15949189 A JP15949189 A JP 15949189A JP 15949189 A JP15949189 A JP 15949189A JP H0326451 A JPH0326451 A JP H0326451A
- Authority
- JP
- Japan
- Prior art keywords
- core drill
- machining
- hole
- workpiece
- small
- 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
- 238000003754 machining Methods 0.000 claims abstract description 40
- 239000006061 abrasive grain Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 229910003460 diamond Inorganic materials 0.000 description 11
- 239000010432 diamond Substances 0.000 description 11
- 239000011148 porous material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、例えばガラスなどの被加工物に超音波加工に
より大明けを行うコアドリルに関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a core drill for drilling a workpiece such as glass by ultrasonic machining.
（従来の技術）
たとえば、ガラスなどの硬脆材料からなる被加工物に直
径１． ５ ｗｍ ，深さ９０箇，かつその真直度１０
μ島の細孔を穿設する場合には、超音波ロータリ加工機
の先端にダイヤモンドコアドリルを取付け、このダイヤ
モンドコアドリルを回転させるとともに、上下方向に１
〜２μ肩の振幅で振動させ、１分間に２箇の速度で送り
を与え、このダイヤモンドコアドリルに同軸に貫通して
設けられた注水孔の先端部から被加工物に注水｛ツなが
ら穿孔加エを行つでいた。上記コアドリルは、先端面及
び先端部側Ｊ！ｌ織部にダイヤ七ンド砥粒層因を被着し
た田柱状の加工部（自）ε、仁の加工部（Ｂ）（こｌｉ
１１軸Ｉこ連結８れた同柱状の支持部材（Ｑ ｌ：．か
らなり、ζれら加工部（ｌｌｊ）（！＝支持部材（（′
５の会長に．わたり、上記注水孔■が設１づ゛られてい
る己ともに、支持部材（０の−辷靖部を図示七゛ぬ趙膏
波ロータリ加０機の先端に喋着し六′，のら、上端部２
５′−ら注水するよ・う構成していた０
一：ラろ′−Ｃ、」二記のように柳成された＝１アドリ
ノレ（こ被着されてむ）るダ可ヤ毛ンド砥粒εしては、
通常、１７０・・・２００メフシ晶のものが使われて（
いる。(Prior Art) For example, a workpiece made of a hard and brittle material such as glass has a diameter of 1. 5 wm, depth 90 points, and straightness 10
When drilling pores in μ islands, attach a diamond core drill to the tip of the ultrasonic rotary processing machine, rotate the diamond core drill, and rotate it vertically once.
The diamond core drill was vibrated with an amplitude of ~2 μ shoulder and fed at two speeds per minute, and water was injected into the workpiece from the tip of the water injection hole provided coaxially through this diamond core drill. I was there. The above core drill has a tip surface and a tip side J! A column-shaped processed area (self) ε with a diamond seven-dot abrasive layer applied to the weave, and a processed area (B) (koli).
11 axes I and 8 are connected to the same columnar support member (Q l:.,
5 Chairman. In addition to the above-mentioned water injection hole (1), attach the sliding part of the supporting member (0) to the tip of the rotary machine (6', 6', not shown in the figure). Upper end 2
5' - It was configured to pour water from 0 1: Raro' - C, 2 was made as shown in the following. As for grain ε,
Usually, 170...200 Mephushi crystals are used (
There is.
しかし、、赤而籾きをらっこ良くするため妃は、ζ，れ
以上の例えば４００メクシ一、之り細粒のダイヤモンド
砥粒ａ−使わねばならな《イ）が％巴の場合目詰まりが
生じやｔ＜，か・つ、切れ味が悪化す゛るために、結果
的に、加エ精度が低下する６モζで、従来においては、
穿孔亦れた細孔の内は面を銑簡に仕，上げ加工するには
、１７０＝２００メクシ瓢のダイヤセンド砥粒が被着さ
れたコアｉ／ リルで守孔した後、細孔内檗面をラツビ
ングあるいはポリシングにより鏡面仕上げしでいる。し
かしながら、内径数博以下の細孔内壁面を、穿孔後に研
磨仕上げするこたは、すこぶる困難であって、かつ、き
わめて加丁能率が低い欠点を転クでいる。However, in order to make the red paddy look good, the princess must use fine diamond abrasive grains of ζ, for example 400 mex, which will prevent clogging. In the case of 6-mo ζ, the sharpness worsens when the cutting occurs and the machining accuracy decreases as a result.In the past,
The surface of the inside of the pores that have been drilled must be polished and polished with a core i/rill coated with 170 = 200 mekushi gourd diamond abrasive grains. The wooden surface is polished to a mirror finish by rubbing or polishing. However, it is extremely difficult to polish the inner wall surface of a pore with an inner diameter of less than a few degrees after drilling, and it also suffers from the drawbacks of extremely low cutting efficiency.
（発明が解決し２よったする課題）
本発明は、上記事情を勘ｖ（，７でなされたもので、内
楼数略以下の細孔をコアドリルを用いたー闘だけの加工
で、高精度仕上げ加工を行うｃ乏が社赤るコアドリルを
提供することを目的とする。(Problems to be Solved by the Invention and According to 2) The present invention was made in consideration of the above-mentioned circumstances. The purpose of the present invention is to provide a core drill that can perform precision finishing machining.
ｒ．発明の４１１ｌ或）
（課題を解決するための手段と作用）
超膏波コアドリルにおいて、研磨加工を行う加工部を径
順にかつ段差状ｉ？′：設け．、粗加王から仕上げ加工
まで一貫し，で連続的に行えるようにして、加工能率の
向，上をはかクフ；＝ものである。r. 411l of the invention) (Means and effects for solving the problem) In a super-gypsum core drill, the processing portion to be polished is arranged in radial order and in a stepped shape i? ′: Provided. The goal is to improve machining efficiency by making it possible to perform everything from rough machining to finishing machining consistently and continuously.
（案施例） 以下、本発明の一実施例を図面を参照して詳述する。(Proposed example) Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図は、本発明の一爽施例のコアドリル（ＣＤ）を示
している。らのコアドリル（ＣＤ）は、細長い金篇製で
円柱状をなす支持部（１）己、この支持部の一端部に問
軸に設けられた円柱状の加．］′：部（２）と、この支
詩部の他端部に同紬ｊこ設１プ゛られた蝉合部（３）と
、螺合部（３）の先端部から加工部（２）の先端部にか
Ｕ′で同軸に貝通しで設けられ内徳面にテノロン（商品
名：デ・，ボン（ＤｕＰｏｎ１）社製）からなる撞膜［
Ｆ］が被濠必れている注水孔（４）とからなっている。FIG. 1 shows a core drill (CD) according to an exemplary embodiment of the present invention. Their core drill (CD) has a cylindrical support part (1) made of elongated gold braid, and a cylindrical addition provided on the shaft at one end of the support part. ]': Part (2), the threaded part (3) which is also installed on the other end of this branch part, and the processed part (2) from the tip of the threaded part (3). ) is provided coaxially with a shell at the tip of U', and on the inner surface there is a membrane made of Tenoron (product name: DuPon1) [
F] consists of a water injection hole (4) which is covered with a moat.
モ・ラして、加ヱ部（２》は、支持部（１）：こ同軸に
直結窃れた仕上げ加エ部（５）と、仁の仕」こげ加工部
（５）に同軸に直結きれた粗加工部（６）己からな１て
いる。そうしで、仕上げ加工部（５）は、支持部（１）
に面一に連結きれた金属製の円柱状の第１素地部（７冫
と，この第１ぶ地部（７）の表面に例えば蒸殖、無電解
メッキなどにより被殖キれた第１ダイヤモンド砥粒層（
８１ｋからなっている。この第１ダイヤモンド砥粒雇（
３）を構成している砥粒のメッシ鳳→ブ゛イズは、４０
ｏメッシ：Ｌ租度である。一方、粗加王部（６）は、第
１素地部（７）１ζ面一に連絨＊れた岡柱′Ｊ＄．ω第
２素地部（９）と、ζの第２素地ｓ（０；の表面及び先
端面に例え、ば、蒸瀦，無電解メッシなどにより被着き
れた第２ダイヤ千ンド砥粒ｆ＠（Ｉｎとからなっでいる
。この第２ダｄヤモンド砥粒層（８）を檎成している砥
粒のメッシネサイズは、１７０〜２００メッシュである
。そうして、第１素地部（９（は、第２素地部（９）よ
り転仕上げ代分だけ大径に設定されている。そうして、
第１素地部（７）の軸方向申開部には、周方向に尋配し
て複数の噴出孔αυ・・・が後方向に穿設されている．
また、第２素地部（９）の第１素地部（７）に隣擬した
部位には、局方向に等配して複数の噴出孔圓・・・が後
方向に９設されている。しかして、これら噴出孔ａｌ・
・・，圓・・・の一端は、汗水孔（４）に連通し、他端
は、外部Ｈｃ開目してい，ろ。亦らに、前記螺合部（３
）は、文持部（１）に同軸１こ直結Ｌ７ている鍔部（１
３ｌと、この鍔部（１：ｌ’ｌの背部に同軸に連結され
たおねじ部（ｌ４）とからなって（ハる。The machining part (2) is coaxially connected to the support part (1), and the finished part (5) is coaxially connected to the burnt part (5). The finished rough machining part (6) is self-contained.Then, the finishing machining part (5) is attached to the support part (1).
A first metal cylindrical base part (7) is connected flush with the first base part (7), and a first base part (7) whose surface is covered by evaporation, electroless plating, etc. Diamond abrasive layer (
It consists of 81k. This first diamond abrasive (
3) The mesh size of the abrasive grains that make up 3) is 40
o Messi: L concession. On the other hand, the coarse-grained part (6) is the okabashira'J$ which is continuous on the first base part (7) 1ζ. For example, the second diamond abrasive grains f@, which have been fully deposited by vaporization, electroless meshing, etc., are the surfaces and tip surfaces of the ω second substrate part (9) and the second substrate s(0; of ζ). The mesh size of the abrasive grains forming this second diamond abrasive grain layer (8) is 170 to 200 mesh. is set to have a larger diameter than the second base part (9) by the rolling and finishing allowance.
In the axially opening portion of the first base portion (7), a plurality of ejection holes αυ are arranged in the circumferential direction and are bored in the rear direction.
Further, in a portion of the second substrate portion (9) adjacent to the first substrate portion (7), a plurality of nozzle holes are provided in the rearward direction, spaced equally in the local direction. However, these vents al.
..., one end of the circle communicates with the sweat hole (4), and the other end is open to the external Hc. In addition, the screw portion (3
) is the flange part (1
3l, and a male screw part (l4) coaxially connected to the back of this collar part (1: l'l).
）ぎに、上記構威のコアドリル（ＣＤ）の作動ｌこつい
て述（ヘ）る。Next, we will discuss the operation of the core drill (CD) with the above structure.
第２図は、ＮＣ付フライス盤（１５１を示している。FIG. 2 shows a milling machine (151) with an NC.
このＮＣ付フライス盤α場のコラム（ｌｅには超音波ロ
ータリ加工機（ｌわが取付けられている．しかして、こ
の超音波ロータリ加工機αＤの先端には、前記コアドリ
ル（ＣＤ）が螺合部（３）のおねじ部ｒｉＱを介して螺
着されている。このコアドリル（ＣＤ）は、ｆｆｉ！−
波ロータＩＪ ｍ工機αＤとともに矢印α榎のように回
転し、矢印（１９ａ）， （１９ｂ）のように上下方向
に振動しながら下向きの送り速度により下降し、例えば
ガラスなどの硬脆部材からなる被加工物（１）を穿孔加
工するように設けられている。そうして、被加工物（至
）は、上記フライス盤α９のベクドｆ２Ｄに固定されて
いるとともに、カバー（２１１）により、その周囲を覆
われていて、注水孔（４）及び噴出孔（Ｌ１）・・・，
α３・・・から水とともに排出される研磨屑を、このカ
バー（２１ａ）内に回収するようになっている。An ultrasonic rotary processing machine (l) is attached to the column (le) of this NC milling machine α field.The core drill (CD) is attached to the threaded part ( 3) is screwed through the male thread riQ.This core drill (CD) is ffi!-
The wave rotor IJ m rotates along with the machine tool αD as shown by the arrow α, and descends at a downward feed rate while vibrating vertically as shown by the arrows (19a) and (19b). It is provided so as to perforate a workpiece (1). Then, the workpiece (to) is fixed to the vector f2D of the milling machine α9, and is covered with a cover (211), and has a water injection hole (4) and a spout hole (L1). ...,
Polishing debris discharged together with water from α3... is collected into this cover (21a).
かくて、ベッド（２１）に固定された被加工物（至）に
対して、矢印＜１１方向に回転駆動されているとともに
、超音波が印加されているコアドリル（ＣＤ）を矢印（
１９ａ ）方向に下降させると、被加工物（１）は、
まず、コアドリル（ＣＤ）の粗加工部（６）により下孔
（自）が穿？される（第３図参照）。ついで、下孔（自
）の開口部に仕上げ加工部（５）が達すると、この仕上
げ加工部（５）により下孔働の内壁面が仕上げ加工され
、細孔（至）が形或される。このとき、細孔（至）内に
は研磨屑が発生するが、注水孔（４）及び噴出孔０・・
・，α４・・・から噴出する水により、すみやかに排出
され、カバー（２１０内に回収される。Thus, the core drill (CD), which is rotationally driven in the direction of arrow <11 and to which ultrasonic waves are applied, is rotated with respect to the workpiece (to) fixed on the bed (21).
When lowered in the direction 19a), the workpiece (1)
First, the pilot hole (self) is drilled by the rough machining part (6) of the core drill (CD). (See Figure 3). Next, when the finishing part (5) reaches the opening of the lower hole (self), the finishing part (5) finishes the inner wall surface of the lower hole and forms a fine hole (to). . At this time, polishing debris is generated in the pores (to), but the water injection hole (4) and the spout hole 0...
, α4, etc., the water is quickly discharged and collected into the cover (210).
以上のように、この実施例のコアドリル（ＣＤ）は、細
孔■■■を得るための粗加工と仕上げ加工とを１回の加
工で連続的に行うことができるので、粗加工と仕上げ加
工とを別々に行う場合に比べて、加工能率が著しく向上
することはもとより、加工精度も改善される。また、注
水孔（４）のみならず噴出孔αυ・・・，（至）・・・
からも側方に水を噴出させるようにしているので、研磨
屑の排出がより円滑に行われるようになり、目詰まりが
ほとんどなくなることにより、コアドリル（ＣＤ）の破
損の防止、工具寿命の延長等を期待することができ、結
果的に工具コストの低減にもつながる。As described above, the core drill (CD) of this embodiment can perform rough machining and finishing machining to obtain fine holes in a single process, so rough machining and finishing machining can be performed continuously. Compared to the case where these steps are performed separately, not only machining efficiency is significantly improved, but also machining accuracy is improved. In addition to the water injection hole (4), the ejection hole αυ..., (to)...
Since the water is ejected from the side to the side, the abrasive debris is discharged more smoothly, and clogging is almost eliminated, which prevents damage to the core drill (CD) and extends tool life. As a result, tool costs can be reduced.
なお、上記実施例ｌこおける加工部（２）は、粗加工部
（６）と仕上げ加工部（５）とからなっているが、第４
図に示すように、粗加工部（６）と、仕上げ加工部（５
）との間に中間仕上げ加工部（至）を設けてもよい．の
みならず、加工部を、段差状かつ径の大きさ順に連設さ
れた４つ以上の小加工部により構成してもよい。The machining section (2) in Example 1 above consists of a rough machining section (6) and a finishing machining section (5).
As shown in the figure, there is a rough machining section (6) and a finishing machining section (5).
) may be provided with an intermediate finishing section (to). Alternatively, the machining section may include four or more small machining sections arranged in a step-like manner in order of diameter.
本発明のコアドリルは、粗加工部と仕上げ加工部とを連
設しているので、内径が数一以下の細孔でも、・粗加工
と仕上げ加工とを連続的に行うことができる。したがっ
て、粗加工と仕上げ加工とを別々に行う場合に比べて、
加工能率が著しく向上することはもとより、加工精度も
改善する。また、注水孔のみならず噴出孔からも細孔内
壁面に向う側方に水を噴出させるようにしているので研
磨屑の排出がより円滑に行われるようになる。その結果
、目詰まりがほとんどなくなることにより、コアドリル
の破損の防止、工Ａ寿命の延長等の格別の効果を期待で
きる。Since the core drill of the present invention has a rough machining section and a finish machining section connected to each other, rough machining and finishing machining can be performed continuously even in a small hole having an inner diameter of several tens or less. Therefore, compared to performing rough machining and finishing machining separately,
Not only machining efficiency is significantly improved, but also machining accuracy is improved. Further, since water is ejected from not only the water injection hole but also the ejection hole laterally toward the inner wall surface of the pore, polishing debris can be discharged more smoothly. As a result, clogging is almost eliminated, and special effects such as prevention of damage to the core drill and extension of the life of the drill can be expected.
第１図は本発明の一実施例のコアドリルの構成図，第２
図及び第３図は同じく作用説明図，第４図は本発明の他
の実施例の説明図，第５図は従来技術の説明図である。
（ＣＤ）・・・コアドリル，（１）・・・支持部，（２
）・・・加工部，（４）・・・注水孔（注液孔），（５
）・・・仕上げ加工部，田）・・・粗加工部。
代壇人 弁理士 則 近 憲 佑
同 松 山 允 之
３
５ イ士上Ｉ↑ＩＩＤＪＬも■
｛
第
４
田
第
５
図
第
２
田Fig. 1 is a configuration diagram of a core drill according to an embodiment of the present invention, Fig. 2
3 and 3 are action explanatory diagrams, FIG. 4 is an explanatory diagram of another embodiment of the present invention, and FIG. 5 is an explanatory diagram of the prior art. (CD)... Core drill, (1)... Support part, (2
)...Processing part, (4)...Water injection hole (liquid injection hole), (5
)...Finishing section, 田)...Roughing section. Representative patent attorney Nori Ken Ken Yudo Matsuyama Masaru 3 5 Ishijo I↑II DJL too ■ { 4th field 5th figure 2nd field
Claims (2)
られた円柱状の加工部と、上記支持部と上記加工部の軸
線に沿って貫通して穿設され上記加工部の先端から加工
液を噴出させる注液孔とを有し、かつ工作機械に装着さ
れてこの工作機械により、上記軸線のまわりに回転駆動
されながら上記加工部を被加工物に切込ませるとともに
上記加工部を介して上記被加工物に超音波を印加するこ
とにより上記被加工物の穿孔を行うコアドリルにおいて
、上記加工部は、外径の異なる少なくとも二つの小加工
部よりなり、かつ、これら小加工部は上記支持部にいく
につれ外径が大きくなるように段差状かつ同軸に連設さ
れてなり、かつ、上記各小加工部の外周部及び最小径の
小加工部の先端面は砥粒層の被着によりなり、かつ、こ
れら砥粒層を構成している砥粒の粒径は、これら砥粒層
が属している各小加工部の外径の増加に従って減少する
ように設けられていることを特徴とするコアドリル。(1) A rod-shaped support part, a cylindrical processed part coaxially provided at one end of the support part, and a tip of the processed part that is drilled through the support part and the processed part along the axis line thereof. and a liquid injection hole for spouting machining fluid from the machine tool, and the machine tool cuts the machining part into the workpiece while being rotated around the axis by the machine tool, and the machining part In the core drill which perforates the workpiece by applying ultrasonic waves to the workpiece through are arranged in a step-like manner and coaxially so that the outer diameter increases toward the support part, and the outer periphery of each small-machined part and the tip surface of the small-machined part with the smallest diameter are covered with an abrasive layer. The grain size of the abrasive grains that are deposited and make up these abrasive grain layers is designed to decrease as the outer diameter of each small machined part to which these abrasive grain layers belong increases. A core drill featuring:
開口する噴出孔が設けられていることを特徴とする請求
項（１）記載のコアドリル。(2) The core drill according to claim 1, wherein each small machining section is provided with an ejection hole that communicates with the liquid injection hole and opens at the outer periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15949189A JPH0326451A (en) | 1989-06-23 | 1989-06-23 | Core drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15949189A JPH0326451A (en) | 1989-06-23 | 1989-06-23 | Core drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0326451A true JPH0326451A (en) | 1991-02-05 |
Family
ID=15694927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15949189A Pending JPH0326451A (en) | 1989-06-23 | 1989-06-23 | Core drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2994871A1 (en) * | 2012-09-05 | 2014-03-07 | Snecma | Cylindrical drilling tool for drilling casing flange of turbojet of aircraft, has completion part placed behind blank part and covered with abrasive material allowing completion of hole, where blank part comprises ring in extension of axis |
| DE102016121711A1 (en) | 2015-11-20 | 2017-05-24 | Fanuc Corporation | machine tool |
-
1989
- 1989-06-23 JP JP15949189A patent/JPH0326451A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2994871A1 (en) * | 2012-09-05 | 2014-03-07 | Snecma | Cylindrical drilling tool for drilling casing flange of turbojet of aircraft, has completion part placed behind blank part and covered with abrasive material allowing completion of hole, where blank part comprises ring in extension of axis |
| DE102016121711A1 (en) | 2015-11-20 | 2017-05-24 | Fanuc Corporation | machine tool |
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