JPH0426173Y2 - - Google Patents
Info
- Publication number
- JPH0426173Y2 JPH0426173Y2 JP1985094724U JP9472485U JPH0426173Y2 JP H0426173 Y2 JPH0426173 Y2 JP H0426173Y2 JP 1985094724 U JP1985094724 U JP 1985094724U JP 9472485 U JP9472485 U JP 9472485U JP H0426173 Y2 JPH0426173 Y2 JP H0426173Y2
- Authority
- JP
- Japan
- Prior art keywords
- drill
- hole
- circumferential
- tube
- circumferential groove
- 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.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 51
- 238000005553 drilling Methods 0.000 claims description 23
- 230000002265 prevention Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Drilling And Boring (AREA)
- Drilling Tools (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えば水道管に分岐口を形成する、
特に、水道管内での水の流れを断つことなく不断
水の状態で分岐口を形成する場合等に用いられる
もので、詳しくは、駆動回転軸の端部に、穿孔案
内用のドリルと、管周壁部分を回転軸芯方向視に
おいて円形に切取る王冠状のカツタとを同芯状態
に固着してある管周壁用穿孔装置に関する。[Detailed description of the invention] [Industrial application field] The invention is applicable to, for example, forming a branch port in a water pipe.
It is especially used when forming a branch opening without interrupting the flow of water in a water pipe, etc. Specifically, a drill for guiding the hole and a pipe are attached to the end of the drive rotation shaft. The present invention relates to a perforation device for a peripheral wall of a pipe, in which a crown-shaped cutter for cutting a peripheral wall portion into a circular shape when viewed in the direction of the rotational axis is fixed concentrically.
例えば、水道管に不断水で分岐口を形成する
際、分岐口形成のために切取つた管周壁部分が水
道管内に落ちると、水道管内に介装されているバ
ルブ等でその切取り管周壁部分が詰まつたり、バ
ルブが破損したりするといつた不都合が生じる。
従つて、水道管に不断水で分岐口を形成すること
にあつては、切取り管周壁部分を確実に取出すこ
とが肝要である。
For example, when forming a branch in a water pipe without water interruption, if the peripheral wall of the pipe that was cut off to form the branch falls into the water pipe, the peripheral wall of the cut pipe may be damaged by a valve installed inside the water pipe. If the valve becomes clogged or damaged, other inconveniences may occur.
Therefore, when forming a branch port in a water pipe without water interruption, it is important to reliably remove the peripheral wall portion of the cut pipe.
そのため、従来においては、第１０図に示すよ
うに、前記管周壁を穿孔するドリル２の先端部分
２Ａに周溝４を形成し、この周溝４内に、穿孔に
伴うドリル孔ａの周縁部ｂへの当接によりドリル
孔ａを通過するようにドリル周面よりも外方に突
出する姿勢からそれ自体の弾性力に抗して周溝４
内に引退するとともに、ドリル孔ａを通過したと
き突出姿勢に弾性復帰し、かつ、その弾性復帰し
た状態でのドリル２の引抜き移動に伴つて孔周縁
部ｂに当接することにより傘形に変形して孔周縁
部ｂに係止する係止部材０５を保持させ、もつ
て、係止部材０５の孔周縁部ｂへの係止により切
取り管周壁部分A1のドリル２からの離脱を阻止
して、ドリル２とともに切取り管周壁部分A1を
取出す手段が講じられていた（例えば、実公昭51
−54452号公報）。また、第１１図に示すように、
ドリル２の先端部分２Ａに切欠き４を形成し、ド
リル２に、ドリル２の回転に伴う遠心力によりド
リル周面よりも突出する姿勢に摺動付勢されると
ともに、穿孔に伴う孔周縁部ｂへの当接によつて
ドリル孔ａを通過するように切欠き４内に引退揺
動するコの字形の係止０５，を取付け、もつて、
ドリル孔ａの通過後に突出姿勢に切替わつた係止
部材０５，の孔周縁部ｂへ係止により、切取り管
周壁部分A1のドリル２からの離脱を阻止して、
ドリル２とともに切取り管周壁部分A1を取出す
手段もある（例えば、実開昭52−18476号公報）．
しかしながら、上述した従来のいずれの手段に
よるときも、係止部材がドリル孔を通過して一旦
突出姿勢に変更すると、その係止部材を引退姿勢
に変更することができないため、管周壁部分のカ
ツタによる切取りが完了する前にカツタの刃が損
傷したりして穿孔できなくなつて、カツタの交換
が必要となつたとき、前記の係止部材が既にドリ
ル孔を通過して突出姿勢にあると、この係止部材
が孔周縁部に係止してドリルを引抜くことができ
ない。従つて、穿孔途中においてカツタの交換が
必要となつた場合には、ドリルを強く引つ張つて
係止部材を孔周縁部に強く衝突させて係止部材に
衝撃を与え、これにより、係止部材を破損させて
係止部材の孔周縁部への係止を解除するといつた
手間のかかる非常手段を採る必要があつた。 Therefore, conventionally, as shown in FIG. 10, a circumferential groove 4 is formed in the tip portion 2A of the drill 2 for drilling the pipe circumferential wall, and in this circumferential groove 4, the peripheral edge of the drill hole a accompanying the drilling is formed. The circumferential groove 4 resists its own elastic force from the position of protruding outward from the circumferential surface of the drill so as to pass through the drill hole a by contact with b.
It retires inwards and elastically returns to the protruding position when passing through the drill hole a, and in the elastically returned state, as the drill 2 is pulled out and moves, it comes into contact with the hole periphery b, thereby deforming into an umbrella shape. Then, the locking member 05 that locks on the hole peripheral edge b is held, and the detachment of the cutting pipe peripheral wall portion A 1 from the drill 2 is prevented by the locking of the locking member 05 on the hole peripheral edge b. Therefore, a method was taken to remove the peripheral wall portion A1 of the cut tube together with the drill 2 (for example,
-54452). Furthermore, as shown in Fig. 11,
A notch 4 is formed in the tip portion 2A of the drill 2, and the drill 2 is forced to slide into a position protruding from the circumferential surface of the drill due to the centrifugal force accompanying the rotation of the drill 2, and the peripheral edge of the hole accompanying drilling. Installing a U-shaped lock 05, which swings back into the notch 4 so as to pass through the drill hole a by contacting the hole b,
By locking the locking member 05, which has changed to the protruding position after passing through the drill hole a, to the hole peripheral edge b, the cut pipe peripheral wall portion A1 is prevented from detaching from the drill 2,
There is also a method for removing the peripheral wall portion A1 of the cut tube together with the drill 2 (for example, see Utility Model Application Publication No. 18476/1983). However, when using any of the above-mentioned conventional means, once the locking member passes through the drill hole and changes to the protruding position, the locking member cannot be changed to the retracted position. If the cutter blade is damaged or the cutter becomes unable to drill before the cutting is completed, and the cutter needs to be replaced, if the locking member has already passed through the drill hole and is in the protruding position. , this locking member locks on the peripheral edge of the hole, making it impossible to pull out the drill. Therefore, if it becomes necessary to replace the cutter during drilling, the drill is pulled strongly and the locking member collides strongly with the periphery of the hole, giving a shock to the locking member. It was necessary to take time-consuming emergency measures such as breaking the member and releasing the locking member from the peripheral edge of the hole.
そこで、さらに別の従来技術としては、ドリル
の先端部分に周溝を形成し、この周溝内に、Ｃ字
リング状の切取り管脱落防止部材を、その外周縁
の一部がドリルの周面よりもやや外方に突出した
状態で装着する。あるいは、ドリルの外周面に対
して複数本の弓形の切取り管脱落防止部材をドリ
ル軸線方向に沿わせて配置して、これらの切取り
管脱落防止部材の、管周壁に形成されるドリル孔
の周縁部との接当によるドリル半径方向での弾性
的な縮径変形により、穿孔完了後で管周壁部分の
切取り完了前での、ドリル孔からのドリルの抜け
出しを可能に構成していた（例えば、実開昭52−
88788号公報）。 Therefore, as yet another conventional technique, a circumferential groove is formed at the tip of the drill, and a C-shaped ring-shaped cut-off tube drop-off prevention member is placed in the circumferential groove so that a part of the outer circumferential edge of the cut-off tube falls off the circumferential surface of the drill. It should be worn with it protruding slightly outward. Alternatively, a plurality of arcuate cut-off tube fall-off prevention members are arranged along the axial direction of the drill on the outer peripheral surface of the drill, and these cut-off tube fall-off prevention members are attached to the periphery of the drill hole formed in the pipe peripheral wall. Due to elastic diameter reduction deformation in the radial direction of the drill due to contact with the part, the drill can be removed from the drill hole after drilling is completed but before the pipe circumferential wall is completely cut out (for example, Jitsukai Showa 52-
88788).
しかしながら、上記のようにＣの字リング状の
切取り管脱落防止部材を用いて、管周壁に対する
穿孔後で切取り完了前でのドリル孔からの抜け出
しを可能に構成した穿孔装置では、前述した、穿
孔後で切取り完了前でのドリル孔からの抜け出し
を可能にすることができる点では有用であるもの
の、次のような新たな欠点を伴うものであつた。
However, in a drilling device configured to use a C-ring-shaped cutting tube drop-off prevention member as described above to enable exit from the drill hole after drilling the peripheral wall of the pipe and before completion of cutting, the above-mentioned drilling Although this method is useful in that it allows later exit from the drilled hole before the cutting is completed, it has the following new drawbacks.
すなわち、Ｃの字リング状の切取り管脱落防止
部材は、ドリルの穿孔作業に伴う孔明け方向での
ドリル移動にともなつて周溝内に納まるように縮
径変形されなければならないことから、リング状
の切取り管脱落防止部材の周溝からの突出量は僅
かなものである。しかも、ドリルの穿孔作業に伴
う孔明け方向でのドリル移動のみならず、抜け出
し方向へのドリル移動に際しても、ドリル孔周縁
との接当により、いつでも前記切取り管脱落防止
部材が縮径方向に弾性変形してしまう。このた
め、穿孔及び切取り作業を終了して、ドリルを停
止させた状態で切取り片を移動させる途中で何等
かのシヨツクなどがあると、不測に大きな切取り
片が脱落してしまう危険性があつた。 In other words, the diameter of the C-shaped ring-shaped cutoff pipe drop-off prevention member must be deformed to fit within the circumferential groove as the drill moves in the drilling direction during drilling work. The amount of protrusion of the cut-off tube falling-off prevention member from the circumferential groove is small. In addition, not only when the drill moves in the direction of drilling during drilling work, but also when moving the drill in the direction of pulling out, the cutoff tube fall-off prevention member always elasticizes in the diametrical direction due to contact with the periphery of the drill hole. It becomes deformed. For this reason, if there is some kind of shock while moving the cut piece with the drill stopped after drilling and cutting work has been completed, there is a risk that a large cut piece may unexpectedly fall off. .
本発明の目的は、管周壁部分が確実に切り取ら
れた後における切取り管周壁部分の取り出しを、
切取り管脱落防止部材を用いて確実に行えるよう
にし、かつドリルでの穿孔後でカツタでの切取り
完了前におけるドリルの抜け出しを可能にして、
使用上の便宜を図ると共に、ドリルを作動させて
の作業状態以外では切取り管周壁部分が簡単には
脱落しないようにして、切取り管周壁部分の移動
に際しての安全性を図ることにある。 An object of the present invention is to remove the cut pipe peripheral wall portion after the pipe peripheral wall portion has been reliably cut away.
It is possible to do this reliably by using a member to prevent the cutting tube from falling off, and it is possible to remove the drill after drilling with a drill but before completing cutting with a cutter,
To provide convenience in use and to ensure safety when moving the peripheral wall portion of the cutting tube by preventing the peripheral wall portion of the cutting tube from easily falling off except in working conditions when a drill is operated.
上記目的を達成するために講じた本考案の技術
手段は、駆動回転軸の端部に、穿孔案内用のドリ
ルと、管周壁部分を回転軸芯方向視において円形
に切取る王冠状のカツタとを同芯状態に固着して
ある管周壁用穿孔装置において、下記［イ］〜
［ハ］に記載の構成を備えたことである。
The technical means of the present invention taken to achieve the above object includes a drill for guiding the drilling and a crown-shaped cutter for cutting the peripheral wall portion of the pipe into a circular shape when viewed in the direction of the rotation axis, at the end of the drive rotation shaft. In a perforating device for a pipe peripheral wall in which the pipes are fixed concentrically, the following [A] to
The configuration described in [C] is provided.
［イ］ 前記ドリルには、その先端部分に周溝を
形成してあり、この周溝内に、周方向に長い切
取り管脱落防止部材を、その一端側が周溝内に
固定され、かつ、他端側が自由端となるととも
に、その一部が自由状態でドリルの周面よりも
外方に突出した状態で装着してある。[A] The drill has a circumferential groove formed in its tip portion, and a circumferentially long cutting tube drop-off prevention member is fixed in the circumferential groove at one end thereof, and the other is fixed in the circumferential groove. The end side is a free end, and a part of the drill is attached in a free state and protrudes outward from the circumferential surface of the drill.
［ロ］ 前記切取り管脱落防止部材は、ドリル外
周面に面方向を沿わせた弾性帯板状体からな
り、前記他端側を、管周壁に形成されるドリル
孔の周縁部との接当により、ドリル周方向に変
形して前記周溝内に埋没する姿勢に弾性変位自
在に構成してある。[B] The cut-off tube falling-off prevention member is made of an elastic band-shaped body whose surface direction is along the outer circumferential surface of the drill, and the other end side is brought into contact with the peripheral edge of the drill hole formed in the circumferential wall of the tube. Accordingly, the drill is configured to be elastically displaceable so as to be deformed in the circumferential direction of the drill and buried in the circumferential groove.
［ハ］ 前記脱落防止部材は、ドリル軸芯方向の
位置を、王冠状のカツタが管周壁の一部を切取
る前に、前記ドリルによるドリル孔を通過する
位置に設定してある。[C] The falling-off prevention member is set in a position in the drill axis direction such that the crown-shaped cutter passes through the drill hole formed by the drill before cutting off a part of the pipe peripheral wall.
上記技術手段を講じたことによる作用は次の通
りである。
The effects of taking the above technical measures are as follows.
ａ 周方向に長い切取り管脱落防止部材が、ドリ
ルと一体に回転しつつ孔周縁部に当接すること
により、ドリル孔内に移入可能なように周溝内
に引退するものであるから、ドリルでの穿孔
後、カツタにより管周壁部分が切取られると、
ドリルの回転を停止することにより、ドリル孔
を通過して突出姿勢に変更した切取り管脱落防
止部材を孔周縁部ｂに係止させて、切取り管周
壁部分のドリルからの離脱を阻止できる。a The circumferentially long cutting tube drop-off prevention member rotates together with the drill and comes into contact with the hole periphery, so that it retires into the circumferential groove so that it can be moved into the drill hole. After drilling, the peripheral wall of the pipe is cut off with a cutter.
By stopping the rotation of the drill, the cut-off tube drop-off prevention member that has passed through the drill hole and changed to the protruding position can be locked to the hole peripheral edge b, thereby preventing the cut-off tube peripheral wall portion from detaching from the drill.
ｂ 切取り管脱落防止部材は、ドリル外周面に面
方向を沿わせた弾性帯板状体からなるものであ
るから、管周壁に形成されるドリル孔の周縁部
との接当により、ドリル周方向に変形し易い形
状でありながら、ドリル軸線方向に作用する切
取り管の荷重に対しては強い支持力を得易い構
造となつている。b Since the cut-off tube falling-off prevention member is made of an elastic band-shaped body whose surface direction is along the outer circumferential surface of the drill, the cut-off tube falling-off prevention member is made of an elastic band-like member whose surface direction is along the outer circumferential surface of the drill, so that it can be prevented from falling off in the circumferential direction of the drill by coming into contact with the peripheral edge of the drill hole formed in the circumferential wall of the tube. Although it has a shape that is easily deformed, it has a structure that allows it to easily obtain a strong supporting force against the load of the cutout tube that acts in the axial direction of the drill.
ｃ カツタの刃が欠損する等して管周壁部分の切
取りを行えなくなつてカツタを取出す場合に
は、ドリルを回転させつつ引抜くことにより、
切取り管脱落防止部材を穿孔作業時と同様に引
退姿勢に変更して、孔周壁部への係止を解除
し、ドリルを引き抜くことができる。c. If you need to remove the cutter because the cutter blade is damaged and you are unable to cut out the peripheral wall of the pipe, pull it out while rotating the drill.
The cutoff tube drop-off prevention member can be changed to the retired position in the same way as during drilling work, the locking on the hole peripheral wall can be released, and the drill can be pulled out.
ｄ 切取り管周壁部分の移動後におけるドリルの
引き抜きは、切取り管周壁部分を目的の位置に
着地させた状態で、必要があれば適宜固定し
て、ドリルを回転させながら切取り管脱落防止
部材をドリル孔周縁に接当させ、切取り管脱落
防止部材を周溝内に引退するように変形させて
引き抜く。d To pull out the drill after moving the peripheral wall of the cut-off tube, make sure that the peripheral wall of the cut-off tube has landed in the desired position, fix it as appropriate if necessary, and while rotating the drill, pull out the member to prevent the cut-off tube from falling off. The member is brought into contact with the periphery of the hole, deformed so as to retire into the circumferential groove, and then pulled out.
上記a.〜c.の作用から、切取り管脱落防止部材
が、ドリルと一体に回転しつつ孔周縁部に当接す
ることにより、そのドリルの回転力を利用して変
形させられ、ドリル孔内に移入可能なように周溝
内に引退するものであるから、切取り管脱落防止
部材の突出量を充分大きくしても確実に縮径変形
させられる。これによつて、管周壁部分が切り取
られた後における切取り管周壁部分の取り出し
を、突出量の大きい切取り管脱落防止部材を用い
て確実に行えるようにし、かつ、ドリルでの穿孔
後でカツタでの切取り完了前におけるドリルの抜
け出しを可能にして、使用上の便宜を図り得たも
のである。
Due to the effects described in a. to c. above, the cutoff tube drop-off prevention member rotates together with the drill and comes into contact with the hole periphery, and is deformed using the rotational force of the drill and is inserted into the drill hole. Since it is retracted into the circumferential groove so that it can be transferred, even if the amount of protrusion of the cutoff tube drop-off prevention member is sufficiently increased, the diameter can be reliably reduced. This makes it possible to reliably take out the peripheral wall portion of the cut tube after it has been cut out using a member that prevents the cut tube from falling off with a large protrusion, and also allows the removal of the peripheral wall portion of the cut tube after it has been cut out using a cutter after drilling the hole with a drill. This makes it possible to remove the drill before the cutting is completed, making it more convenient to use.
また、上記a.b.及びd.の作用から、ドリルを作
動させての作業状態以外では、ドリルが停止して
いるので、切取り管脱落防止部材は周溝内には引
退せず、また、切取り管脱落防止部材がドリル軸
線方向での荷重に対しては変形し難く強い支持力
を有した帯板形状となつている。従つて切取り管
周壁部分が簡単には脱落しない状態となつてお
り、切取り管周壁部分の移動に際しての安全性を
確保できる利点がある。 In addition, from the effects of ab and d above, the drill is stopped when the drill is not in operation, so the cut-off tube fall-off prevention member does not retire into the circumferential groove, and the cut-off tube falls off. The prevention member is in the form of a band plate that is not easily deformed under the load in the axial direction of the drill and has a strong supporting force. Therefore, the circumferential wall portion of the cut-off tube does not fall off easily, and there is an advantage that safety can be ensured when moving the circumferential wall portion of the cut-off tube.
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
第７図に示すように、水道管の周壁Ａに、分岐
管Ｂを接続するための分岐口Ｃを形成する場合等
に用いられる管周壁用穿孔装置であつて、これ
は、第１図乃至第６図に示すように、モータ等で
駆動される駆動回転軸１の端部に、管周壁Ａに孔
開け可能な穿孔案内用ドリル２と、ドリル孔ａ周
りの管周壁部分A1を回転軸方向視において円形
に切取る王冠状のカツタ３とを、ドリル２の先端
部分２Ａがカツタ３よりも突出される状態に固着
して、構成されている。 As shown in FIG. 7, this is a perforating device for a pipe peripheral wall used when forming a branch port C for connecting a branch pipe B to a peripheral wall A of a water pipe. As shown in FIG. 6, a drilling guide drill 2 capable of drilling a hole in the pipe circumferential wall A is attached to the end of a drive rotating shaft 1 driven by a motor or the like, and the pipe circumferential wall portion A 1 around the drill hole A is rotated. A crown-shaped cutter 3 that is cut into a circular shape when viewed in the axial direction is fixed in such a manner that the tip portion 2A of the drill 2 protrudes beyond the cutter 3.
前記ドリル２の先端部分２Ａには、周溝４が形
成されており、かつ、ドリル２には、このドリル
２を一体に回転しつつドリル孔ａの周縁部ｂに当
接することにより、その遊端部分において孔周縁
部ｂに係止するようにドリル２の周面よりも外方
に接線方向で突出した姿勢から、ドリル孔ａを通
過するように周溝４内に引退した姿勢にそれ自体
の弾性力に抗して回転軸芯と平行な軸芯周りに揺
動変位する帯板状の切取り管脱落防止部材である
ところの板バネ製の係止部材５がビス６を介して
取付けられている。 A circumferential groove 4 is formed in the tip portion 2A of the drill 2, and the play is removed by rotating the drill 2 together and abutting the circumferential edge b of the drill hole a. From a position in which the end portion protrudes tangentially outward from the circumferential surface of the drill 2 so as to engage with the hole peripheral edge b, the drill itself changes to a position in which it is retracted into the circumferential groove 4 so as to pass through the drill hole a. A locking member 5 made of a plate spring, which is a strip-shaped cut-out tube fall prevention member that swings around an axis parallel to the rotational axis against the elastic force of the plate, is attached via a screw 6. ing.
上記の構成によれば、係止部材５が、穿孔に伴
う孔周縁部ｂへの当接により引退姿勢に変更して
ドリル孔ａを通過し、通過後、突出姿勢に弾性復
帰する。従つて、この突出姿勢に復帰した係止部
材５の孔周縁部ｂへの係止により、カツタ３で切
取られた管周壁部分A1のドリルａからの離脱が
阻止され、その結果、ドリル２とともに切取り管
周壁部分A1を取出すことができる。しかも、カ
ツタ３の刃が折損する等して、それ以上の穿孔が
行えなくなつた場合には、ドリル２を回転させつ
つドリル２を引き抜くことにより、突出姿勢にあ
つた係止部材５が孔周縁部ｂへの当接で引退姿勢
に変更してドリル孔ａを通過するから、ドリル
２、カツタ３、を取出すことができる。 According to the above configuration, the locking member 5 changes to the retracted position by contacting the hole peripheral edge b during drilling, passes through the drill hole a, and after passing, elastically returns to the protruding position. Therefore, by locking the locking member 5 which has returned to the protruding position with the hole peripheral edge b, the tube peripheral wall portion A1 cut off by the cutter 3 is prevented from detaching from the drill a, and as a result, the drill 2 At the same time, the peripheral wall portion A1 of the pipe can be removed. Moreover, if the blade of the cutter 3 breaks or makes it impossible to drill any more holes, by pulling out the drill 2 while rotating the drill 2, the locking member 5 in the protruding position can be inserted into the hole. The drill 2 and the cutter 3 can be taken out because it changes to the retracted position upon contact with the peripheral edge b and passes through the drill hole a.
なお、本考案は次のようにして実施しても良
い。 Note that the present invention may be implemented as follows.
(イ) 第８図、第９図に示すように、前記の係止部
材５を、突出姿勢においてドリル２の周面より
も外方にほぼ半径方向で突出するように構成す
る。なお、係止部材５の、穿孔時に孔周縁部６
に当接する辺５ａ及びドリル引抜きのときに孔
周縁部ｂに当接する辺５ｂは、それぞれ、回転
状態での孔周縁部ｂへの当接による引退姿勢へ
の変更をスムーズに行えるようにするため、円
弧状のカム面に形成されている。(a) As shown in FIGS. 8 and 9, the locking member 5 is configured to protrude substantially radially outward from the circumferential surface of the drill 2 in the protruding position. Note that the hole peripheral portion 6 of the locking member 5 is
The side 5a that comes into contact with the drill and the side 5b that comes into contact with the hole periphery b when the drill is pulled out are designed so that the retracted position can be smoothly changed by contacting the hole periphery b in the rotating state. , is formed on an arcuate cam surface.
第１図ないし第７図は本考案に係る管周壁用穿
孔装置の実施例を示し、第１図ないし第４図は穿
孔動作を示す要部の断面図、第５図は第１図にお
ける−線断面図、第６図は第２図における
−線断面図、第７図は水道管の一部切欠き図で
あり、第８図及び第９図は別の実施例を示し、第
８図は要部の正面図、第９図は第８図における
−線断面図である。第１０図及び第１１図は
夫々従来例を示す要部の断面図である。それぞれ
従来例を示す要部の断面図である。
１……駆動回転軸、２……穿孔案内用ドリル、
３……カツタ、２Ａ……先端部分、４……周溝、
５……切取り管脱落防止部材。
1 to 7 show an embodiment of the perforating device for pipe circumferential walls according to the present invention, FIGS. 1 to 4 are sectional views of main parts showing the perforating operation, and FIG. 6 is a cross-sectional view taken along the - line in FIG. 2, FIG. 7 is a partially cutaway view of a water pipe, FIGS. 8 and 9 show another embodiment, and FIG. 9 is a front view of the main part, and FIG. 9 is a cross-sectional view taken along the - line in FIG. 8. FIGS. 10 and 11 are sectional views of main parts of conventional examples, respectively. FIG. 3 is a cross-sectional view of a main part showing a conventional example. 1... Drive rotation shaft, 2... Drill for drilling guide,
3...Katsuta, 2A...Tip part, 4...Peripheral groove,
5... Member to prevent the cut tube from falling off.
Claims (1)
と、管周壁部分A1を回転軸芯方向視において円
形に切取る王冠状のカツタ３とを同芯状態に固着
してあるとともに、下記［イ］〜［ハ］に記載の
構成を備えている管周壁用穿孔装置。 ［イ］ 前記ドリル２には、その先端部分２Ａに
周溝４を形成してあり、この周溝４内に、周方
向に長い切取り管脱落防止部材５を、その一端
側が周溝４内に固定され、かつ、他端側が自由
端となるとともに、その一部が自由状態でドリ
ル２の周面よりも外方に突出した状態で装着し
てある。 ［ロ］ 前記切取り管脱落防止部材５は、ドリル
外周面に面方向を沿わせた弾性帯板状体からな
り、前記他端側を、管周壁Ａに形成されるドリ
ル孔ａの周縁部ｂとの接当により、ドリル２周
方向に変形して前記周溝４内に埋没する姿勢に
弾性変位自在に構成してある。 ［ハ］ 前記脱落防止部材５は、ドリル軸芯方向
の位置を、王冠状のカツタ３が管周壁の一部を
切取る前に、前記ドリル２によるドリル孔ａを
通過する位置に設定してある。[Claims for Utility Model Registration] A drill 2 for guiding the drilling is provided at the end of the drive rotation shaft 1.
and a crown-shaped cutter 3 for cutting the pipe peripheral wall portion A1 into a circular shape when viewed in the direction of the rotational axis are fixed in a concentric manner, and have the configurations described in [A] to [C] below. Perforation device for pipe peripheral walls. [B] The drill 2 has a circumferential groove 4 formed in its tip portion 2A, and a circumferentially long cutting tube falling-off prevention member 5 is placed in the circumferential groove 4, with one end of the circumferential groove 4 inside the circumferential groove 4. It is fixed, and the other end is a free end, and a part of the drill is attached in a free state and protrudes outward from the circumferential surface of the drill 2. [B] The cut-off tube falling-off prevention member 5 is made of an elastic band-shaped body whose surface direction is along the outer circumferential surface of the drill, and the other end side is connected to the peripheral edge b of the drill hole a formed in the tube circumferential wall A. The drill is configured to be able to be elastically displaced into a position in which it is deformed in the circumferential direction and buried in the circumferential groove 4 by contact with the drill. [C] The drop-off prevention member 5 is set in a position in the drill axis direction such that the crown-shaped cutter 3 passes through the drilled hole a by the drill 2 before cutting off a part of the pipe peripheral wall. be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094724U JPH0426173Y2 (en) | 1985-06-22 | 1985-06-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094724U JPH0426173Y2 (en) | 1985-06-22 | 1985-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS627314U JPS627314U (en) | 1987-01-17 |
| JPH0426173Y2 true JPH0426173Y2 (en) | 1992-06-24 |
Family
ID=30958474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985094724U Expired JPH0426173Y2 (en) | 1985-06-22 | 1985-06-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0426173Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5432541B2 (en) * | 2009-02-03 | 2014-03-05 | コマツＮｔｃ株式会社 | Tank drilling device |
| KR102548352B1 (en) * | 2021-10-22 | 2023-06-27 | 주식회사 강남기술공사 | pipe punching device without suspending water supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5278878U (en) * | 1975-12-11 | 1977-06-13 |
-
1985
- 1985-06-22 JP JP1985094724U patent/JPH0426173Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS627314U (en) | 1987-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015151737A1 (en) | Drilling tool | |
| JPH0426173Y2 (en) | ||
| JP2690352B2 (en) | Drilling tool | |
| JP2756237B2 (en) | Core drill shank attachment structure | |
| US4343577A (en) | Deburring tool | |
| JPH0890325A (en) | Mounting structure of cylindrical hole drill | |
| US10870157B2 (en) | Pilot drill with spring detent | |
| CA1326204C (en) | Quick release rotary punch | |
| JPH07241840A (en) | Core drill | |
| JPH0424164B2 (en) | ||
| JPH0451926Y2 (en) | ||
| WO2005014211A1 (en) | Core bit mounting and removing structure | |
| JP2802047B2 (en) | Drilling tools | |
| JP3898373B2 (en) | Annular cutter and apparatus for attaching / detaching the annular cutter | |
| JP3425942B2 (en) | Spin cast end cap assembly with internal governor weight | |
| JPH0410474Y2 (en) | ||
| JPH09207014A (en) | Center drill for drilling tool and drilling tool | |
| US20230278114A1 (en) | Hole saw | |
| JP6647442B1 (en) | Turning assisting tool and turning device, and turning method using them | |
| JPH0636805U (en) | Hole cutter | |
| JPH0746413Y2 (en) | Cutting piece holding mechanism of perforator for fluid pipe | |
| JP2552141Y2 (en) | Buried pipe drilling equipment | |
| JPH08323521A (en) | Hole saw mounting device for keypunch | |
| JPH08118438A (en) | Screw mounting mechanism of injection molding machine | |
| JPH026930Y2 (en) |