JPH0639311U - Glass punch - Google Patents
Glass punchInfo
- Publication number
- JPH0639311U JPH0639311U JP7536992U JP7536992U JPH0639311U JP H0639311 U JPH0639311 U JP H0639311U JP 7536992 U JP7536992 U JP 7536992U JP 7536992 U JP7536992 U JP 7536992U JP H0639311 U JPH0639311 U JP H0639311U
- Authority
- JP
- Japan
- Prior art keywords
- shank
- hole
- blade
- cutting
- blade portion
- 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
Links
Landscapes
- Drilling Tools (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
(57)【要約】
【構成】シャンク先端部に、先端側の切削刃部と根元側
の研磨仕上刃部とからなる櫂型刃部を軸着し、シャンク
中空孔を介し切削刃部に冷却液を供給せしめる穿孔具で
あって、櫂型刃部が立方晶窒化硼素砥粒と、金属質結合
材料またはガラス質結合材料を含んでなること、加えて
切削刃面、更に仕上刃面に縦溝を刻成したこと、仕上刃
面を半円弧状に切欠いて、孔の縁取り部を形成したこ
と、櫂型刃部内に前記シャンク中空孔と交叉する横通孔
を設けたことからなる。
【効果】従来のダイヤモンド砥粒を採用した穿孔具に比
べ研削効率を大幅に向上でき、さらに縦溝と横通孔を配
した構成においては研削効率が格段と向上する。
(57) [Summary] [Structure] The shank tip has a paddle-shaped blade consisting of a cutting blade on the tip side and a polishing finish blade on the root side, and is cooled to the cutting blade via a hollow shank hole. A drilling tool for supplying a liquid, wherein the paddle-shaped blade portion contains cubic boron nitride abrasive grains and a metallic or vitreous bonding material, and in addition to the cutting blade surface and the finishing blade surface, It consists of carving a groove, notching the finishing blade surface in a semi-circular shape to form an edge portion of the hole, and providing a horizontal passage hole intersecting with the shank hollow hole in the paddle-shaped blade portion. [Effect] The grinding efficiency can be greatly improved as compared with the conventional punching tool using diamond abrasive grains, and further the grinding efficiency is remarkably improved in the configuration having the vertical groove and the horizontal through hole.
Description
【０００１】[0001]
本考案は立方晶窒化硼素砥粒を用いたガラス穿孔具に関する。 The present invention relates to a glass punching tool using cubic boron nitride abrasive grains.
【０００２】[0002]
ガラスのように硬度が高くかつ脆性な材料を穿孔するのに、最も硬度が高いダ イヤモンド砥粒を採用した、いわゆるダイヤモンドドリルが奨用されていること はよく知られるところである。しかし、例えばドリルを高速回転させ、研削効率 を向上させようとすると、当然ながら摩擦熱が高じて高熱を発生し、ダイヤモン ドすなわちカーボン自体酸化し易く、消耗が激しくなる。 It is well known that a so-called diamond drill, which employs a diamond abrasive grain having the highest hardness, is recommended for drilling a material having high hardness and brittleness such as glass. However, for example, when a drill is rotated at a high speed to improve the grinding efficiency, frictional heat is naturally increased and high heat is generated, and the diamond, that is, the carbon itself is easily oxidized, resulting in severe wear.
【０００３】 他方高熱の発生を防ぐために、砥粒部への冷却液の供給を工夫する手段も講じ られているが、それのみでは基本的な解決手段にはならない。 特開平4-217414号には、金属の穿孔に適したドリルであって、シャンク部と、 これに分離可能に接合した平板型切刃部とを備え、切刃部は少なくとも先端が立 方晶窒化硼素焼結体からなる使い捨て式のドリルが開示されている。該焼結体は 炭化チタン、窒化チタン、炭化タングステン等とともに焼結される。ところで立 方晶窒化硼素砥粒はダイヤモンドに比べより高温に耐え得るが、単にそれを採用 するのみではやはり切削効率向上のうえで限界があり、冷却液の供給、切削物の 排出についての工夫が必要である。また、炭化チタン、窒化チタン、炭化タング ステン等高い焼結温度を要する材料とともに焼結するのは容易とはいえない。On the other hand, in order to prevent the generation of high heat, some measures have been taken to improve the supply of the cooling liquid to the abrasive grains, but this is not the only basic solution. Japanese Unexamined Patent Publication No. 4-217414 discloses a drill suitable for perforating metal, which includes a shank portion and a flat plate-type cutting blade portion that is separably joined to the shank portion. A disposable drill made of sintered boron nitride is disclosed. The sintered body is sintered together with titanium carbide, titanium nitride, tungsten carbide and the like. By the way, cubic boron nitride abrasive grains can withstand higher temperatures than diamond, but there is a limit in improving cutting efficiency simply by adopting them, and it is necessary to devise ways to supply coolant and discharge cuttings. is necessary. Further, it cannot be said that it is easy to sinter with a material such as titanium carbide, titanium nitride, or tungsten carbide which requires a high sintering temperature.
【０００４】 本考案は前記公知例とは異なり、砥粒としての窒化硼素と、高い軟化点ではあ るが焼結し易いガラス、結晶化ガラスや金属質の結合剤を用いて刃部を形成し、 冷却液の供給を工夫し、それらにより研削効率を向上させたガラス穿孔具を提供 するものである。The present invention is different from the above-mentioned known example in that the blade portion is formed by using boron nitride as abrasive grains and glass, crystallized glass or metallic binder having a high softening point but easy to sinter. However, by devising the supply of the cooling liquid, the glass perforating tool with improved grinding efficiency is provided.
【０００５】[0005]
【問題点を解決するための手段】 本考案は、シャンク先端部に、先端側の切削刃部と根元側の研磨仕上刃部とか らなる櫂型刃部を軸着し、シャンク中空孔を介し切削刃部に冷却液を供給せしめ る穿孔具であって、櫂型刃部が立方晶窒化硼素砥粒と、金属質結合材料またはガ ラス質結合材料を含んでなること、 切削刃部の切削刃面、あるいは更に研磨仕上刃部の仕上刃面に縦溝を刻成した こと、 研磨仕上刃部の仕上刃面を半円弧状に切欠いて、穿孔後の孔の縁取り部を形成 したこと、 さらに、櫂型刃部内に前記シャンク中空孔と交叉し、切削刃部切削面に冷却液 を供給する横通孔を、シャンク長手方向に沿って一ないし複数設けたこと、から なる。[Means for Solving the Problems] The present invention has a paddle-shaped blade portion including a cutting blade portion on the tip side and a polishing finish blade portion on the root side, which is axially attached to the shank tip portion, and which is provided through a shank hollow hole A drilling tool for supplying a cooling liquid to a cutting blade, wherein the paddle-shaped blade contains cubic boron nitride abrasive grains and a metallic or glassy bonding material. A vertical groove was formed on the blade surface, or further on the finishing blade surface of the polishing finishing blade portion, and the finishing blade surface of the polishing finishing blade portion was cut in a semi-circular shape to form the edge of the hole after drilling, Further, one or a plurality of horizontal through holes that intersect the shank hollow hole and supply the cooling liquid to the cutting surface of the cutting blade are provided in the paddle-shaped blade along the longitudinal direction of the shank.
【０００６】 先述したようにドリルを高速回転させようとすると、摩擦熱が高じて高熱を発 生するが、従来のダイヤモンド砥粒は約700 ℃においてダイヤモンドすなわちカ ーボン自体酸化し消耗が激しくなるという弊害がある。他方立方晶窒化硼素砥粒 はそれ自身の硬度はダイヤモンドに比べ稍劣るが、1000℃付近の高熱にも安定し ている。さらに熱伝導率が高いので熱を放散し易く高速回転による研削効率の向 上に有効である。As described above, when trying to rotate the drill at a high speed, frictional heat is generated and a high heat is generated, but conventional diamond abrasive grains oxidize diamond or carbon itself at about 700 ° C., resulting in severe wear. There is an evil. On the other hand, the cubic boron nitride abrasive grains are inferior in hardness to diamond themselves, but are stable even at high heat around 1000 ° C. Furthermore, since the thermal conductivity is high, it is easy to dissipate the heat and it is effective in improving the grinding efficiency by high speed rotation.
【０００７】 勿論結合剤や板状芯金もその熱に耐え、軟化、溶解しないような材料を採用し なければならない。芯金としては合金鋼等が、結合剤としてはSiO2-Al2O3-B2O3 R2O 系ガラス、ZnO-B2O3-SiO2-Al2O3 系ガラスセラミックス、Co、Fe-Ni-Cr系等 の金属質のものなどが推奨できる。Of course, the binder and the plate-shaped cored bar must be made of a material that withstands the heat, does not soften, and does not melt. Alloy steel or the like is used as the core metal, and SiO 2 -Al 2 O 3 -B 2 O 3 R 2 O type glass, ZnO-B 2 O 3 -SiO 2 -Al 2 O 3 type glass ceramics, Co as the binder. Metallic materials such as Fe-Ni-Cr series are recommended.
【０００８】[0008]
以下本考案を添付の図面に基づき説明する。 図１Ａ、Ｂは本考案にかかる穿孔具の斜視図であり、図２Ａは別の態様にかか る斜視図、図２Ｂは図２ＡのＺ−Ｚ線断面図である。 Hereinafter, the present invention will be described with reference to the accompanying drawings. 1A and 1B are perspective views of a punching tool according to the present invention, FIG. 2A is a perspective view of another embodiment, and FIG. 2B is a sectional view taken along line ZZ of FIG. 2A.
【０００９】 図１Ａ、Ｂにおいて1 はガラス穿孔具で、図１Ａは比較的小口径、例えば20mm 以下の孔を穿設するためのもの、図１Ｂはそれより大口径の孔を穿設するための ものである。2 は冷却液、例えば水やオイルを切削刃部3 の先端に供給する中空 孔4 を有するシャンクであり、5 は櫂型刃部で、切削刃部3 と研磨仕上刃部6 よ り形成する。7 は縦溝、8 は縁取り部であり、図１Ｂに示す9 は板状芯金で、大 口径の孔を穿設するうえで、櫂型刃部5 の横巾を大サイズとする場合において、 切削研磨に直接かかわらない部分に採用される。In FIGS. 1A and 1B, 1 is a glass punch, FIG. 1A is for making a hole having a relatively small diameter, for example, 20 mm or less, and FIG. 1B is for making a hole having a larger diameter. belongs to. 2 is a shank having a hollow hole 4 for supplying a cooling liquid, such as water or oil, to the tip of the cutting blade 3, 5 is a paddle-shaped blade, which is formed by the cutting blade 3 and the polishing finish blade 6. . 7 is a vertical groove, 8 is a edging portion, and 9 shown in FIG. 1B is a plate-shaped core metal. When a large-diameter hole is formed and the horizontal width of the paddle-shaped blade portion 5 is large, It is used for parts that are not directly involved in cutting and polishing.
【００１０】 切削刃部3 と研磨仕上刃部6 は、例えばいずれも立方晶窒化硼素砥粒と前記し た金属質またはガラス質の結合剤を用いるもので、うち立方晶窒化硼素砥粒の体 積百分率は10vol%〜40vol%程度であるが、勿論これに限定するものではない。The cutting blade portion 3 and the polishing finishing blade portion 6 are made of, for example, cubic boron nitride abrasive grains and the above-mentioned metallic or vitreous binder, of which cubic boron nitride abrasive grains are used. The product percentage is about 10 vol% to 40 vol%, but it is not limited to this.
【００１１】 切削刃部3 および研磨仕上刃部6 を製造するには、立方晶窒化硼素砥粒と前記 結合剤粉末を混合し、所定形状に圧縮成形し、高温、あるいはさらに高圧下で焼 成すればよい。To manufacture the cutting blade portion 3 and the polishing finish blade portion 6, cubic boron nitride abrasive grains and the binder powder are mixed, compression-molded into a predetermined shape, and baked at a high temperature or under a high pressure. do it.
【００１２】 砥粒粒度は適宜勘案し、採択すればよいが、切削刃部3 において#60 〜150 、 研磨仕上刃部6 において#150〜600 程度とする。 縦溝7 と縁取り部8 の形成については、本出願人が先に出願した実願平3-7851 1 号に詳述したので詳細は省略するが、縦溝7 は冷却液の流通を助け、切削屑の 排出、刃部の冷却にきわめて有効であり、縁取り部8 は切削、研磨後のストレー ト孔の上下端を改めて縁取りするのに適用される。The grain size of the abrasive grains may be appropriately considered and selected, but the cutting blade portion 3 has a diameter of # 60 to 150 and the polishing finish blade portion 6 has a diameter of approximately # 150 to 600. The details of the formation of the flutes 7 and the edging portion 8 are described in Japanese Patent Application No. 3-7851 1 filed earlier by the present applicant, and therefore the details are omitted, but the flutes 7 help the circulation of the cooling liquid. It is extremely effective in discharging cutting chips and cooling the blade part, and the edging portion 8 is applied to re-edging the upper and lower ends of the straight hole after cutting and polishing.
【００１３】 さらに、図２Ａの斜視図、図２Ｂの横断面図に示すように切削刃部3 の切削刃 面9 への冷却液の供給を良好にするために、切削刃部の内部を横切り、シャンク 中空孔と交叉する横通孔10を穿設する。該横通孔10は単数またはシャンク長手方 向に沿って複数配列する。特に図示のように、給液孔が切削刃面の極く手前( 回 転方向に対して) に近在するようにすれば、冷却液が11、11のごとく噴射されて 、切削刃面の冷却効率を高めることができる。Further, as shown in the perspective view of FIG. 2A and the cross-sectional view of FIG. 2B, in order to make the supply of the cooling liquid to the cutting blade surface 9 of the cutting blade portion 3 good, the inside of the cutting blade portion is cut across. The shank is provided with a horizontal through hole 10 that intersects with the hollow hole. The lateral holes 10 are singular or a plurality are arranged along the longitudinal direction of the shank. In particular, as shown in the figure, if the liquid supply hole is located very close to the cutting edge surface (with respect to the rotation direction), the cooling fluid will be sprayed as 11 and 11 and the cutting edge surface The cooling efficiency can be increased.
【００１４】 前記横通孔の形成方法は、特定しないがウオータージェットによるもの、レー ザー加工によるもの、あるいは放電加工法を採用する等、適宜公知の手段を採用 すればよい。なお、 図１に示すように縦溝7 を設け, これに横通孔10を穿設して 冷却液の流通を助長するようにすることも勿論本考案の範疇にある。The method of forming the lateral through hole is not specified, but may be any known method such as water jet, laser machining, or electric discharge machining. It is, of course, within the scope of the present invention to provide a vertical groove 7 as shown in FIG. 1 and to form a horizontal through hole 10 therein to facilitate the flow of the cooling liquid.
【００１５】 本考案は以上のように構成されるもので、例えば口径12mmφ用ドリルでガラス に穿孔する場合、従来のダイヤモンドを採用したものは7000〜8000rpm の回転が 限界であるが、立方晶窒化硼素を採用した場合10000rpm以上の高速回転が可能で あり、さらに縦溝を設け、横通孔を配したものは12000rpmを越えることができる 等、研削効率において 3割ないし 5割以上の向上が認められる。The present invention is constructed as described above. For example, when drilling a glass with a 12 mmφ drill, the conventional diamond adopts a cubic nitriding although rotation of 7000 to 8000 rpm is the limit. When boron is used, high-speed rotation of 10000 rpm or more is possible, and in the case where a vertical groove is provided and a horizontal through hole is provided, it is possible to exceed 12000 rpm.Grinding efficiency is improved by 30% to 50% or more. To be
【００１６】[0016]
本考案によれば、従来のダイヤモンド砥粒を採用した穿孔具に比べ研削効率を 大幅に向上でき、さらに縦溝と横通孔を配した構成においては研削効率が格段と 向上するという効果を奏する。 According to the present invention, it is possible to significantly improve the grinding efficiency as compared with the conventional drilling tool using diamond abrasive grains, and further it is possible to significantly improve the grinding efficiency in the configuration having the vertical groove and the horizontal through hole. .
【図１】図１Ａ、Ｂは夫々本考案の斜視図である。1A and 1B are perspective views of the present invention, respectively.
【図２】図２Ａは別の態様にかかる斜視図、図２Ｂは図
２ＡのＺ−Ｚ線断面図である。2A is a perspective view according to another embodiment, and FIG. 2B is a sectional view taken along line ZZ of FIG. 2A.
【符号の説明】1 ----ガラス穿孔具 2 ----シャンク 3 ----切削刃部 4 ----中空孔 5 ----櫂型刃部 6 ----研磨仕上刃部 7 ----縦溝 8 ----縁取り部 10----横通孔[Explanation of symbols] 1 ---- Glass punch 2 ---- Shank 3 ---- Cutting blade 4 ---- Hollow hole 5 ---- Paddle blade 6 ---- Polishing finish Blade 7 ---- Vertical groove 8 ---- Edge 10 ---- Horizontal through hole
Claims (4)
元側の研磨仕上刃部とからなる櫂型刃部を軸着し、シャ
ンク中空孔を介し切削刃部に冷却液を供給せしめる穿孔
具であって、櫂型刃部が立方晶窒化硼素砥粒と、金属質
結合材料またはガラス質結合材料を含んでなることを特
徴とするガラス穿孔具。1. A shank-shaped blade portion comprising a cutting blade portion on the tip side and a polishing finish blade portion on the root side is axially attached to the shank tip portion, and a cooling liquid is supplied to the cutting blade portion through a shank hollow hole. A punching tool, wherein the paddle-shaped blade portion comprises cubic boron nitride abrasive grains and a metallic or vitreous bonding material.
上刃部の仕上刃面に縦溝を刻成したことを特徴とする請
求項１記載のガラス穿孔具。2. The glass punching tool according to claim 1, wherein a vertical groove is formed on the cutting edge surface of the cutting edge portion or further on the finishing edge surface of the polishing finishing edge portion.
いて、穿孔後の孔の縁取り部を形成したことを特徴とす
る請求項１または２記載のガラス穿孔具。3. The glass punching tool according to claim 1, wherein the finishing blade surface of the polishing finishing blade portion is cut out in a semi-circular arc shape to form an edge portion of the hole after punching.
し、切削刃部切削面に冷却液を供給する横通孔を、シャ
ンク長手方向に沿って一ないし複数設けたことを特徴と
する請求項１ないし３記載のガラス穿孔具。4. One or a plurality of horizontal through holes, which intersect the shank hollow hole and supply cooling liquid to the cutting surface of the cutting blade, are provided in the paddle-shaped blade along the longitudinal direction of the shank. The glass punching tool according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992075369U JP2581987Y2 (en) | 1992-10-29 | 1992-10-29 | Glass drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992075369U JP2581987Y2 (en) | 1992-10-29 | 1992-10-29 | Glass drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0639311U true JPH0639311U (en) | 1994-05-24 |
| JP2581987Y2 JP2581987Y2 (en) | 1998-09-24 |
Family
ID=13574238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992075369U Expired - Fee Related JP2581987Y2 (en) | 1992-10-29 | 1992-10-29 | Glass drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581987Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022076183A (en) * | 2020-11-09 | 2022-05-19 | 株式会社ナノテム | Tool, diameter adjustment method, and drill |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62167610U (en) * | 1986-04-15 | 1987-10-24 | ||
| JPH03161280A (en) * | 1989-08-31 | 1991-07-11 | Nachi Fujikoshi Corp | Tool for piercing hard brittle material |
-
1992
- 1992-10-29 JP JP1992075369U patent/JP2581987Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62167610U (en) * | 1986-04-15 | 1987-10-24 | ||
| JPH03161280A (en) * | 1989-08-31 | 1991-07-11 | Nachi Fujikoshi Corp | Tool for piercing hard brittle material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022076183A (en) * | 2020-11-09 | 2022-05-19 | 株式会社ナノテム | Tool, diameter adjustment method, and drill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2581987Y2 (en) | 1998-09-24 |
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