JPH01280195A - Bit for boring - Google Patents
Bit for boringInfo
- Publication number
- JPH01280195A JPH01280195A JP10779588A JP10779588A JPH01280195A JP H01280195 A JPH01280195 A JP H01280195A JP 10779588 A JP10779588 A JP 10779588A JP 10779588 A JP10779588 A JP 10779588A JP H01280195 A JPH01280195 A JP H01280195A
- Authority
- JP
- Japan
- Prior art keywords
- shank
- reamer
- tip
- hole
- drilling
- 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
- 238000005553 drilling Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 239000011435 rock Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000009527 percussion Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000010804 Maranta arundinacea Nutrition 0.000 description 1
- 244000145580 Thalia geniculata Species 0.000 description 1
- 235000012419 Thalia geniculata Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、岩石やコンクリートに発破孔等を穿設するの
に適した穿孔用ビットに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a drilling bit suitable for drilling blast holes etc. in rock or concrete.
従来から、岩石やコンクＩＪ −トに発破孔等の孔を穿
つには、ビットの回転により穿孔する回転式と、ビット
を打撃しながら同時に回転させることにより穿孔する回
転打撃式とがあるが、いずれの穿孔方法においても先端
に超硬チップからなる刃体を埋設したビットが使用され
ている。Conventionally, there are two types of holes, such as blast holes, in rocks and concrete IJ--: the rotary type, in which the hole is drilled by rotating a bit, and the rotary impact type, in which the hole is drilled by striking and rotating the bit at the same time. In either drilling method, a bit with a blade made of a carbide tip embedded in the tip is used.
このようなビットとしては、第６図及び第７図に示すよ
うに、超硬チップよりなる刃体（ａ）の外径を断面円形
のシャンク（ｂ）よりも大径にして外側方に突出させる
と共にチップの摩耗及び回転抵抗の低減を図るために、
その外周面をシャンク（ｂｌ側に向かって徐々に小径と
なるように傾斜（Ｃ）させている。As shown in Figures 6 and 7, such a bit has a blade body (a) made of a carbide tip that has a larger outer diameter than a shank (b) with a circular cross section and protrudes outward. In order to reduce tip wear and rotational resistance,
Its outer peripheral surface is inclined (C) so that the diameter gradually decreases toward the shank (bl side).
〔発明が解決しようとする課題］
しかしながら、このような構造のビットでは、岩石やコ
ンクリートに穿孔する時、これらの岩石やコンクリート
に硬軟のバラツキがあるため、刃体（ａ）がシャンク（
ｂ）よりも外径方向に突出している分だけ、第８図に示
すように、特に穿孔速度を速くした時に穿孔（ｄ）の孔
壁にはその長さ方向に凹凸面（ｅ）が形成されるばかり
でなく、穿孔（ｄ）自体に曲がりが生じて爾後における
火薬等の装填が困難となる。[Problems to be Solved by the Invention] However, with a bit having such a structure, when drilling into rock or concrete, the blade (a) has a shank (
As shown in Fig. 8, as shown in Fig. 8, an uneven surface (e) is formed on the hole wall of the hole (d) in the length direction, especially when the drilling speed is increased. Not only that, but the perforation (d) itself is bent, making it difficult to load gunpowder or the like later.
本発明は、孔壁に殆ど凹凸面を生じさせることなく、且
つ真っ直ぐな穿設を可能にした穿孔用ビットを提供する
ものである。The present invention provides a drilling bit that allows straight drilling with almost no uneven surfaces on the hole wall.
〔課題を解決するための手段］
上記目的を達成するために、本発明の穿孔用ビットは、
シャンクの先端に、該シャンクよりも大径の刃体を一体
に設けてなる穿孔用ビットにおいて、刃体に後続して外
径が該刃体の外径に略等しいリーマを設けたことを特徴
とするものである。[Means for Solving the Problem] In order to achieve the above object, the drilling bit of the present invention has the following features:
A drilling bit having a blade body having a larger diameter than the shank integrally provided at the tip of the shank, characterized in that a reamer having an outer diameter approximately equal to the outer diameter of the blade body is provided following the blade body. That is.
又、上記リーマは、シャンクと別体に形成して該シャン
クの外周に上下動自在に被嵌させてもよい。Further, the reamer may be formed separately from the shank and fitted onto the outer periphery of the shank so as to be vertically movable.
さらに、リーマの先端部外周面を先細の傾斜面に形成し
ておくと、切削によって生じたくり粉が大きくても、適
当に粉砕しながら排出することができる。Furthermore, if the outer circumferential surface of the tip of the reamer is formed into a tapered inclined surface, even if the cutting powder produced by cutting is large, it can be appropriately pulverized and discharged.
シャンクを回転させながら先端に設けた刃体により穿孔
していくと、後続するリーマが穿孔された孔壁に摺接し
ながら進入してゆき、その外周面で孔壁を整形すると共
にシャンクを常に真っ直ぐに保持して穿孔の曲がりをな
くする。As the shank is rotated and a hole is drilled with the blade attached to the tip, the following reamer slides into the hole wall and shapes the hole wall with its outer circumferential surface, keeping the shank always straight. to prevent bending of the hole.
又、打撃式により穿孔の場合には、リーマをシャンクの
一定長さ部分において上下動自在に被嵌させた構造にし
ておくと、打撃力をリーマに伝達することなく、直接、
刃体に伝達しながら穿孔でき、打撃と共に適宜回転させ
て孔断面に対する刃体の周方向の当接位置を変えながら
穿孔する。In addition, in the case of percussion-type drilling, if the reamer is fitted over a certain length of the shank so that it can move up and down, the impact force can be directly inserted without being transmitted to the reamer.
The hole can be drilled while being transmitted to the blade body, and the hole can be drilled while changing the circumferential contact position of the blade body with respect to the hole cross section by appropriately rotating with the impact.
切削或いは打撃によって生じたくり粉は、刃体を設けた
シャンク先端面から軸内を貫通して排出通路を形成して
おくことにより、この排出通路を通じて吸引除去しても
よく、又、このような排出通路に代えてシャンク先端面
に開口する圧力流体供給孔を貫設しておき、該供給孔を
連じて水や空気等の圧力流体を噴出させ、シャンクと孔
壁間を通じて排出するようにしてもよい。A discharge passage may be formed by penetrating the inside of the shaft from the tip of the shank provided with the blade, and the powder produced by cutting or striking may be removed by suction through this discharge passage. Instead of the discharge passage, a pressurized fluid supply hole opening at the tip of the shank is provided, and the supply holes are connected to eject pressure fluid such as water or air and discharged through between the shank and the hole wall. You can.
この時、くり粉がリーマと孔壁間の隙間よりも大きい場
合には、リーマの先端傾斜面と孔壁間で該くり粉を小さ
く粉砕しながら圧力流体と共に排出する。At this time, if the powder is larger than the gap between the reamer and the hole wall, the powder is pulverized into small pieces between the inclined surface of the reamer and the hole wall and discharged together with the pressure fluid.
［実 施 例］
本発明の実施例を図面について説明すると、第１図及び
第２図は回転式穿孔用に適したビットを示すもので、第
１図において、（１）は断面円形のシャンクで、その先
端部を先端面が円錐形状の大径頭部（１ａ）に形成して
あり、該頭部（１ａ）に超硬チップよりなる刃体（２）
を埋設しである。[Embodiment] An embodiment of the present invention will be explained with reference to the drawings. Figs. 1 and 2 show a bit suitable for rotary drilling. In Fig. 1, (1) is a bit with a circular cross section. The distal end thereof is formed into a large diameter head (1a) with a conical tip surface, and a blade (2) made of a carbide tip is attached to the head (1a).
is buried.
この刃体（２）は頭部（１ａ）から突出してあり、この
頭部（１ａ）の外周面から該刃体（２）の先端面に亘っ
て凹弧状に穿つことによって切削刃（２ａ）が形成され
ていると共に、この刃体（２）の両側部は頭部（１ａ）
の両側外周面から突出し、該突出両側部分の表面は下方
に向かつてや＼内径方向に傾斜する傾斜面（２ｂ）に形
成されである。This blade (2) protrudes from the head (1a), and the cutting blade (2a) is cut by drilling in a concave arc shape from the outer peripheral surface of the head (1a) to the tip surface of the blade (2). is formed, and both sides of this blade body (2) have a head (1a).
It protrudes from the outer peripheral surfaces of both sides, and the surfaces of the protruding both sides are formed into inclined surfaces (2b) which are inclined downwardly and in the inner diameter direction.
（３）は刃体（２）に後続するようにしてシャンク（１
）の外周面に一体に固着したリーマで、シャンク（１）
の頭部（ｌａ）の両側部まで延設している前記刃体（２
）の両側部間の直径と略等しい径に形成されていると共
にその外周面に超硬合金又はダイヤモンド等からなる多
数の微小突起（４）（４）・・・（４）を周方向及び長
さ方向に適宜間隔毎に固着、突設しである。(3) is attached to the shank (1) so that it follows the blade (2).
) is a reamer that is integrally fixed to the outer circumferential surface of the shank (1).
The blade (2) extends to both sides of the head (la) of the blade (2).
) is formed to have a diameter approximately equal to the diameter between both sides of the rim, and a large number of micro protrusions (4) (4)...(4) made of cemented carbide, diamond, etc. are formed on the outer peripheral surface in the circumferential direction and length. They are fixed and protruded at appropriate intervals in the horizontal direction.
さらに、このリーマ（３）の上下端部は内径方向に傾斜
してシャンク（１）の外周面に連らなる傾斜面（５）に
形成してあり、又、数個所に上下傾斜面（５）（５）間
に連通するくり籾排出溝（６）を刻設しである。Furthermore, the upper and lower ends of this reamer (3) are formed into inclined surfaces (5) that are inclined in the inner diameter direction and continue to the outer circumferential surface of the shank (1), and the upper and lower ends of the reamer (3) are formed into inclined surfaces (5) at several places. ) (5) A hollow paddy discharge groove (6) communicating between the two is carved.
（７）はシャンク（１）の下半部の中央部において、下
端面から適宜長さ部分に設けた中空ロッド連結用螺子孔
で、その上端から頭部（１ａ）に連通ずる圧力流体流通
孔（８）を貫設しである。(7) is a screw hole for connecting a hollow rod provided at an appropriate length from the lower end surface in the center of the lower half of the shank (1), and a pressure fluid communication hole communicating from the upper end to the head (1a). (8) is installed through it.
このように構成した穿孔用ビットにより岩石やコンクリ
ート等に発破孔等の孔を穿設するには、シャンク（１）
の螺子孔（７）に中空ロッド（図示せず）を連結して該
中空ロッドを適宜な回転駆動機構により回転させ、シャ
ンク（１）の頭部刃体（２）を岩石等に押し付けながら
回転する刃体（２）によって穿孔していくと、シャンク
（１）に固着したリーマ（３）が穿設された孔壁に摺接
しながらシャンク（１）と一体に回転し、その周面に突
設している多数の微小突起（４）によって孔壁を整形す
ると共に孔壁を穿孔の案内支持面にして該孔壁に摺接す
るリーマ（３）によりシャンク（１）を常に直状に保持
しながら穿孔が行われる。To drill holes such as blast holes in rocks, concrete, etc. using the drilling bit configured in this way, use the shank (1).
A hollow rod (not shown) is connected to the screw hole (7) of the shank, and the hollow rod is rotated by an appropriate rotation drive mechanism, and the head blade body (2) of the shank (1) is rotated while being pressed against a rock, etc. As the hole is drilled with the cutting blade (2), the reamer (3) fixed to the shank (1) rotates together with the shank (1) while sliding against the wall of the drilled hole, protruding against the circumferential surface of the reamer (3). The hole wall is shaped by a large number of minute protrusions (4) provided, and the shank (1) is always held straight by the reamer (3) that slides against the hole wall using the hole wall as a guiding support surface for drilling. Drilling is performed while
この穿孔中に、中空ロッドから流通孔（８）に水又は空
気等の圧力流体を供給すると、該圧力流体は流通孔（８
）から穿孔底面側に噴出して刃体（２）によって切削さ
れるくり粉を、シャンク（１）の頭部外周面と孔壁との
間隙からり−マ（３）の外周面に設けている排出溝（６
）を通じて外部に排出する。この際、排出溝（６）を通
過し得ない大きさのくり粉は、回転するり−マ（３）の
上端傾斜面（５）と孔壁間によって小さく粉砕され、前
述同様に圧力流体によって排出溝（６）を流通し、外部
に排出される。During this drilling, when a pressure fluid such as water or air is supplied from the hollow rod to the communication hole (8), the pressure fluid is supplied to the communication hole (8).
) to the bottom of the hole and cut by the blade (2) is provided on the outer circumferential surface of the borer (3) in the gap between the outer circumferential surface of the head of the shank (1) and the hole wall. drain groove (6
) is discharged to the outside through. At this time, the flour that is too large to pass through the discharge groove (6) is crushed into small pieces by the space between the upper end inclined surface (5) of the rotating slimmer (3) and the hole wall, and is pulverized by the pressurized fluid as described above. It flows through the discharge groove (6) and is discharged to the outside.
なお、このような圧力流体によるくり籾排出を行うこと
なく、シャンク（１）に設けている流通孔（８）をくり
籾排出通路に利用することができる。In addition, the communication hole (8) provided in the shank (1) can be used as the hollow paddy discharge passage without performing the hollow paddy discharge using such a pressure fluid.
即ち、中空ロッドを空気吸引装置（図示せず）に連結、
連通して該中空ロッドを通じて流通孔（８）に空気吸引
力を発生させれば、切削されるくり粉は該流通孔（８）
に吸引され、中空ロッドを通じて外部に排出される。That is, connecting the hollow rod to an air suction device (not shown),
If air suction force is generated in the communication hole (8) through the hollow rod, the cutting powder will flow through the communication hole (8).
and is discharged to the outside through a hollow rod.
第３図は回転式穿孔用ビットの別な実施例を示すもので
、前記実施例においては、シャンク（１）の頭部（１ａ
）とり−マ（３）間に適宜長さのシャンク部分を設けて
いるが、この実施例においてはリーマ（３）の上端をシ
ャンク（１）の頭部（Ｉａ）に直接連設させているもの
であり、その他の構造は前記実施例と同様である。FIG. 3 shows another embodiment of the rotary drilling bit, in which the head (1a) of the shank (1) is
) A shank portion of an appropriate length is provided between the reamer (3) and in this embodiment, the upper end of the reamer (3) is directly connected to the head (Ia) of the shank (1). The other structure is the same as that of the previous embodiment.
次に、第４図及び第５図は打撃式穿孔用に適したビット
を示すもので、シャンク（１）の頭部（１ａ）に連なる
軸部（１ｂ）を角軸（図では六角）に形成している一方
、リーマ（３）の中央に該角軸に一ヒ下摺動自在に嵌合
した角孔（９）を設け、さらに、シャンク（１）の大径
頭部（１ａ）の先端部から両側面にかけて打撃用一文字
型刃体（２）を固着していると共にリーマ（３）を上下
から挟むようにして軸部（１ｂ）の上下部にストッパー
００）（Ｉ＋）を固着し、このストッパーＧＯ）（Ｉ
１）によってリーマ（３）が小寸法だけ上下動可能に構
成しているものである。Next, Figures 4 and 5 show a bit suitable for percussion type drilling, in which the shaft (1b) connected to the head (1a) of the shank (1) is a square shaft (hexagonal in the figure). On the other hand, a square hole (9) is provided in the center of the reamer (3), which is slidably fitted to the square shaft, and a square hole (9) is provided in the center of the reamer (3), which is slidably fitted to the square shaft, and a square hole (9) is provided in the center of the reamer (3). A striking blade (2) is fixed from the tip to both sides, and stoppers 00) (I+) are fixed to the upper and lower parts of the shaft (1b) so as to sandwich the reamer (3) from above and below. Stopper GO) (I
1), the reamer (3) is configured to be able to move up and down by a small distance.
その他の構造は第１図で示した回転式穿孔用ビットと同
様である。The rest of the structure is similar to the rotary drilling bit shown in FIG.
このように構成したビットにより岩石等に発破孔等の孔
を穿設するには、シャンク（１）の螺子孔（７）に中空
ロッド（図示せず）を連結して該中空ロッドを適宜な打
撃回転機構（図示せず）に連結し、その打撃回転機構に
よりシャンク（１）に打撃を与えてその頭部先端の刃体
（２）により岩石等を破砕する。In order to drill a hole such as a blast hole in a rock etc. with a bit configured in this way, a hollow rod (not shown) is connected to the screw hole (7) of the shank (1) and the hollow rod is It is connected to a percussion rotation mechanism (not shown), and the percussion rotation mechanism applies a percussion to the shank (1), and the blade (2) at the tip of its head crushes rocks and the like.
この際、打撃による岩盤等の部分破壊後、シャンク（１
）を回転させて孔底面に対する刃体（２）の位置を周方
向にずらし、再び打撃による破砕を行う操作を繰り返し
て穿孔していく。At this time, after the rock is partially destroyed by the blow, the shank (1
) is rotated to shift the position of the blade (2) relative to the bottom surface of the hole in the circumferential direction, and the operation of crushing by impact is repeated again to drill the hole.
打撃時においては、リーマ（３）は穿設された孔壁に摺
接した状態を保持し、このリーマ（３）をガイドとして
シャンク（１）が打撃方向に前進するものであり、シャ
ンク（１）の回転時に角軸（１ｂ）と角孔（９）を介し
てリーマ（３）が回転し、その周面に突設している多数
の微小突起（４）によって孔壁を整形するものである。During striking, the reamer (3) remains in sliding contact with the wall of the drilled hole, and the shank (1) moves forward in the striking direction using the reamer (3) as a guide. ) is rotated, the reamer (3) rotates through the square shaft (1b) and the square hole (9), and the hole wall is shaped by a large number of minute protrusions (4) protruding from its circumferential surface. be.
刃体（２）によって破砕されたくり粉の排出は、前述し
た実施例と同様に、流通孔（７）及び中空ロッドを通じ
ての圧力流体の供給により、或いは、空気の吸引除去に
より行う。The arrowroot crushed by the blade (2) is discharged by supplying pressure fluid through the flow hole (7) and the hollow rod, or by suctioning and removing air, as in the previous embodiment.
なお、リーマ（３）の下端を傾斜面（５）に形成してお
くことによって、シャンク（１）の孔内からの抜き取り
作業が円滑に行えるものである。Note that by forming the lower end of the reamer (3) into an inclined surface (5), the work of extracting the shank (1) from the hole can be performed smoothly.
［発明の効果］
以上のように本発明の穿孔用ビットによれば、シャンク
の先端に設けた刃体に後続して外径が該刃体に略等しい
り−マを設けているので、穿孔中においては、リーマの
外周面が常に穿孔の壁面に摺接して刃体による穿孔方向
が軸心方向となるように保持して真っ直ぐに正確な孔を
穿設できると共にシャンクの穿孔に従ってリーマが移動
する際に、該リーマの外周面で孔壁を整形することがで
き、精度のよい穿孔を行うことができるものである。[Effects of the Invention] As described above, according to the drilling bit of the present invention, since the blade provided at the tip of the shank is followed by a lumber whose outer diameter is approximately equal to that of the blade, it is possible to easily drill holes. Inside, the outer circumferential surface of the reamer is always in sliding contact with the wall surface of the drilling hole, and the drilling direction of the blade body is held in the axial direction, making it possible to drill a straight and accurate hole, and the reamer moves according to the drilling of the shank. When drilling, the hole wall can be shaped with the outer circumferential surface of the reamer, and drilling can be performed with high precision.
又、打撃式により穿孔の場合には、リーマをシャンクの
一定長さ部分において上下動自在に被嵌させた構造にし
ておくと、打撃力をリーマに伝達することなく、直接、
刃体に伝達しながら穿孔できる。In addition, in the case of percussion-type drilling, if the reamer is fitted over a certain length of the shank so that it can move up and down, the impact force can be directly inserted without being transmitted to the reamer.
Perforation can be performed while transmitting the information to the blade body.
さらに、刃体に後続するリーマの先端部外周面を先細の
傾斜面に形成しておけば、切削或いは打撃によって生じ
たくり粉を該傾斜面と孔壁とで細かく粉砕しながら円滑
な排出を可能にしえるものである。Furthermore, if the outer circumferential surface of the tip of the reamer that follows the blade body is formed into a tapered inclined surface, it is possible to smoothly discharge the cutting powder generated by cutting or hitting by finely pulverizing it between the inclined surface and the hole wall. It is something that can be done.
第１図乃至第５図は本発明の実施例を示すもので、第１
図は回転式穿孔用ビットの正面図、第２図はその平面図
、第３図は回転式穿孔用ビットの別な実施例を示す正面
図、第４図は打撃式穿孔用ビットの正面図、第５図はそ
の横断面図、第６図は従来の穿孔用ビットの正面図、第
７図はその側面図、第８図は穿設された孔の簡略断面図
である。
（１）・・・シャンク、（２）・・・刃体、（３）・・
・リーマ、（４）・・・微小突起、（５）・・・傾斜面
、（６）・・・排出溝、（８）・・・流通孔。1 to 5 show embodiments of the present invention.
The figure is a front view of the rotary type drilling bit, Figure 2 is a plan view thereof, Figure 3 is a front view showing another embodiment of the rotary type drilling bit, and Figure 4 is a front view of the impact type drilling bit. , FIG. 5 is a cross-sectional view thereof, FIG. 6 is a front view of a conventional drilling bit, FIG. 7 is a side view thereof, and FIG. 8 is a simplified sectional view of a drilled hole. (1)...shank, (2)...blade body, (3)...
- Reamer, (4)...Minute protrusion, (5)...Slope, (6)...Drainage groove, (8)...Flow hole.
Claims (3)
体を一体に設けてなる穿孔用ビットにおいて、該刃体に
後続して外径が刃体の外径に略等しいリーマを一体に設
けたことを特徴とする穿孔用ビット。(1) A drilling bit that has a blade body with a larger diameter than the shank integrally provided at the tip of the shank, and a reamer whose outer diameter is approximately equal to the outer diameter of the blade body is integrated following the blade body. A drilling bit characterized by being provided with.
体を一体に設けたなる穿孔用ビットにおいて、シャンク
の外周に外径が刃体の外径に略等しいリーマを上下動自
在に設けたことを特徴とする穿孔用ビット。(2) In a drilling bit in which a blade body with a diameter larger than the shank is integrally provided at the tip of the shank, a reamer whose outer diameter is approximately equal to the outer diameter of the blade body is attached to the outer periphery of the shank and is movable up and down. A drilling bit characterized by:
たことを特徴とする請求項（１）又は（２）記載の穿孔
用ビット。(3) The drilling bit according to claim (1) or (2), wherein the outer circumferential surface of the tip of the reamer is formed into a tapered inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63107795A JPH0635792B2 (en) | 1988-04-30 | 1988-04-30 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63107795A JPH0635792B2 (en) | 1988-04-30 | 1988-04-30 | Drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01280195A true JPH01280195A (en) | 1989-11-10 |
| JPH0635792B2 JPH0635792B2 (en) | 1994-05-11 |
Family
ID=14468226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63107795A Expired - Lifetime JPH0635792B2 (en) | 1988-04-30 | 1988-04-30 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635792B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006070489A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Bit for drilling rock-bed |
| JP2006070487A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Formation method of trench to bedrock |
| JP2006070488A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Method of forming ditch in rock-bed |
| JP2007532803A (en) * | 2004-04-07 | 2007-11-15 | オサケ、ユキチュア、アトラス、コプコ、ロテックス、アクチボラグ | Equipment used for drilling tools |
| JP2010229722A (en) * | 2009-03-27 | 2010-10-14 | Nittoku Kikai Kogyo Kk | Excavating bit |
| KR102404517B1 (en) * | 2021-08-10 | 2022-06-02 | 김명원 | Rock drilling apparatus and method of crushing rock using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189012A (en) * | 1978-01-30 | 1980-02-19 | Smith International, Inc. | Earth boring tool |
| JPS5612492A (en) * | 1979-07-09 | 1981-02-06 | Nakayama Yoshihiro | Pit wall reamer for boring |
-
1988
- 1988-04-30 JP JP63107795A patent/JPH0635792B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189012A (en) * | 1978-01-30 | 1980-02-19 | Smith International, Inc. | Earth boring tool |
| JPS5612492A (en) * | 1979-07-09 | 1981-02-06 | Nakayama Yoshihiro | Pit wall reamer for boring |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007532803A (en) * | 2004-04-07 | 2007-11-15 | オサケ、ユキチュア、アトラス、コプコ、ロテックス、アクチボラグ | Equipment used for drilling tools |
| JP4708419B2 (en) * | 2004-04-07 | 2011-06-22 | ウベ、ゲーティング | Equipment used for drilling tools |
| JP2006070489A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Bit for drilling rock-bed |
| JP2006070487A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Formation method of trench to bedrock |
| JP2006070488A (en) * | 2004-08-31 | 2006-03-16 | Kumagai Gumi Co Ltd | Method of forming ditch in rock-bed |
| JP4505289B2 (en) * | 2004-08-31 | 2010-07-21 | 株式会社熊谷組 | Groove formation method in bedrock |
| JP4634099B2 (en) * | 2004-08-31 | 2011-02-16 | 株式会社熊谷組 | Rock drill bit |
| JP4634098B2 (en) * | 2004-08-31 | 2011-02-16 | 株式会社熊谷組 | Groove formation method in bedrock |
| JP2010229722A (en) * | 2009-03-27 | 2010-10-14 | Nittoku Kikai Kogyo Kk | Excavating bit |
| KR102404517B1 (en) * | 2021-08-10 | 2022-06-02 | 김명원 | Rock drilling apparatus and method of crushing rock using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635792B2 (en) | 1994-05-11 |
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