JPS6225291Y2 - - Google Patents

Info

Publication number
JPS6225291Y2
JPS6225291Y2 JP1982008649U JP864982U JPS6225291Y2 JP S6225291 Y2 JPS6225291 Y2 JP S6225291Y2 JP 1982008649 U JP1982008649 U JP 1982008649U JP 864982 U JP864982 U JP 864982U JP S6225291 Y2 JPS6225291 Y2 JP S6225291Y2
Authority
JP
Japan
Prior art keywords
socket
gun drill
tip
oil hole
adapter
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
Application number
JP1982008649U
Other languages
Japanese (ja)
Other versions
JPS58113406U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP864982U priority Critical patent/JPS58113406U/en
Publication of JPS58113406U publication Critical patent/JPS58113406U/en
Application granted granted Critical
Publication of JPS6225291Y2 publication Critical patent/JPS6225291Y2/ja
Granted legal-status Critical Current

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  • Drilling And Boring (AREA)

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は小径の深穴を加工するために使用され
るドリルユニツトに対するガンドリルの取付装置
に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gun drill mounting device for a drill unit used for drilling small-diameter deep holes.

[従来の技術] 第1図に示すように、従来のガンドリル1はド
リルユニツトのスピンドル2の内空部に、ソケツ
ト3を介してドライブ部5を嵌合支持するととも
に、袋ナツト4をスピンドル2に螺合して固定さ
れる。ガンドリル1のシヤンク6は油止め割りブ
ツシユ7によりチツプボツクス8の一方の壁部に
支持され、先端側はガイドブツシユ9によりチツ
プボツクス8の他方の壁部に支持される。
[Prior Art] As shown in FIG. 1, a conventional gun drill 1 has a drive unit 5 fitted and supported in the inner space of a spindle 2 of a drill unit via a socket 3, and a cap nut 4 is attached to the spindle 2. It is screwed into place and fixed. The shank 6 of the gun drill 1 is supported on one wall of the tip box 8 by a split oil stopper 7, and the tip side is supported on the other wall of the tip box 8 by a guide bush 9.

加工物12はガイドブツシユ9とこの反対側に
配置した押え13とで加工すべき穴の両端側を塞
がれ、シヤンク6の先端に取り付けられた刃先チ
ツプ10がガイドブツシユ9から加工物12へ切
り込まれる。シヤンク6および刃先チツプ10に
は、スピンドル2側から切削油を加圧供給する油
穴が備えられており、刃先で切削された切屑は油
とともに刃先チツプ10およびシヤンク6の外周
面に設けられたV溝を経て軸方向に戻され、チツ
プボツクス8へ排出される。
Both ends of the hole to be machined in the workpiece 12 are closed by the guide bush 9 and the presser foot 13 placed on the opposite side, and the cutting tip 10 attached to the tip of the shank 6 cuts into the workpiece 12 from the guide bush 9. It will be done. The shank 6 and the cutting edge tip 10 are provided with an oil hole that supplies cutting oil under pressure from the spindle 2 side, and the chips cut by the cutting edge are removed together with the oil from the oil hole provided on the outer peripheral surface of the cutting edge tip 10 and the shank 6. It is returned axially through the V-groove and discharged into the tip box 8.

上述した従来のガンドリル1では、ガイドブツ
シユ9とスピンドル2との中間部分が、油止め割
りブツシユ7により、また先端部がガイドブツシ
ユ9により、それぞれチツプボツクス8の壁部に
支持されるだけであるから、ガンドリル1の座屈
に対する強度負担が大きく、ガンドリル1に加え
るスラスト荷重が制限されるので、切削能率が悪
い。また座屈強度の負担を減じるためにガンドリ
ルの長さを短くすると、治具の切屑ポケツトが小
さくなり、切屑の排出状態が悪くなり、連続加工
が不可能となる。
In the conventional gun drill 1 described above, the intermediate portion between the guide bush 9 and the spindle 2 is only supported by the split oil stopper bush 7, and the tip part is supported by the guide bush 9 on the wall of the tip box 8. The buckling of the gun drill 1 requires a large strength burden, and the thrust load applied to the gun drill 1 is limited, resulting in poor cutting efficiency. Furthermore, if the length of the gun drill is shortened in order to reduce the load on buckling strength, the chip pocket of the jig becomes smaller, the chip discharge condition deteriorates, and continuous machining becomes impossible.

[考案が解決しようとする問題点] 本考案の目的は、座屈に対する強度負担を減じ
ることにより切削能率を向上し得るガンドリルの
取付装置を提供することにある。
[Problems to be Solved by the Invention] An object of the present invention is to provide a gun drill mounting device that can improve cutting efficiency by reducing the strength burden caused by buckling.

[問題を解決するための手段] 上記目的を達成するために、本考案の構成は油
穴を有するソケツトの基端部をスピンドルに回転
結合するとともに、前記油穴と同軸の円筒部を有
するソケツトの先端部をチツプボツクスの壁部に
回転可能に支持し、前記円筒部にガンドリルのド
ライブ部を嵌合し、かつ円筒形の押えねじを螺合
したものである。
[Means for solving the problem] In order to achieve the above object, the structure of the present invention is such that the base end of a socket having an oil hole is rotatably coupled to a spindle, and the socket has a cylindrical portion coaxial with the oil hole. The distal end of the tip is rotatably supported on the wall of the chip box, a drive part of a gun drill is fitted into the cylindrical part, and a cylindrical cap screw is screwed into the cylindrical part.

[作用] ドリルユニツトとチツプボツクス8との間にソ
ケツト18が支持され、このソケツト18の内部
にガンドリル1のドライブ部が支持されるので、
ガンドリル1が座屈強度を負担するのは、ソケツ
ト18の先端部とブツシユ37との間のチツプボ
ツクス8の内部に臨む部分だけに減じられる。し
たがつて、スラスト荷重を大きくすることにより
切削能率が向上され、切屑ポケツトの長さも十分
確保される。
[Function] Since the socket 18 is supported between the drill unit and the tip box 8, and the drive portion of the gun drill 1 is supported inside this socket 18,
The buckling strength of the gun drill 1 is reduced only to the portion facing the interior of the tip box 8 between the tip of the socket 18 and the bush 37. Therefore, by increasing the thrust load, cutting efficiency is improved and a sufficient length of the chip pocket is ensured.

[考案の実施例] 第2図に示すように、ガンドリル1はドライブ
部5をソケツト18に結合され、この基端部を支
持するアダプタ25が公知のドリルユニツト14
のスピンドルに回転結合される。ソケツト18の
先端部はチツプボツクス8の一方の壁部に回転可
能に支持される。ガンドリル1の先端側は移動ブ
ツシユ37を貫通し、加工物12へ押し付けられ
る。
[Embodiment of the invention] As shown in FIG. 2, the gun drill 1 has a drive portion 5 connected to a socket 18, and an adapter 25 supporting the base end of the gun drill 1, which is connected to a known drill unit 14.
rotationally coupled to the spindle of The tip of the socket 18 is rotatably supported on one wall of the tip box 8. The tip end of the gun drill 1 passes through the movable bush 37 and is pressed against the workpiece 12.

図示の実施例は、内燃機関のクランクシヤフト
に油穴を加工する場合を示すもので、油穴の貫通
時油の噴出を防止するために、弾性シール38を
有する押え13が液圧アクチユエータ41により
加工物12に押し付けられる。移動ブツシユ37
は案内部材39に支持され、かつ液圧アクチユエ
ータ40により加工物12の切削部に押し付けら
れる。
The illustrated embodiment shows a case where an oil hole is machined in the crankshaft of an internal combustion engine. In order to prevent oil from spouting out when the oil hole is penetrated, a presser foot 13 having an elastic seal 38 is moved by a hydraulic actuator 41. It is pressed against the workpiece 12. Mobile bush 37
is supported by the guide member 39 and pressed against the cut portion of the workpiece 12 by a hydraulic actuator 40 .

第3図に示すように、アダプタ25は基端部
(右端部)に設けたフランジ26を従来のドリル
ユニツトのスピンドル支持部に複数個のボルト2
7により固定される。アダプタ25の先端側には
円筒部24が備えられ、この内周面に軸方向に延
びるキー溝30が設けられる。アダプタ25の先
端部は内径が拡大され、この内部へ後述する環状
溝を有するナツト21が嵌合される。アダプタ2
5の先端部に周方向に間隔を存して複数個の割溝
34(第4図)が設けられ、これにボール32が
抱持される。
As shown in FIG. 3, the adapter 25 connects a flange 26 provided at the base end (right end) to the spindle support portion of a conventional drill unit using a plurality of bolts 2.
Fixed by 7. A cylindrical portion 24 is provided on the distal end side of the adapter 25, and a key groove 30 extending in the axial direction is provided on the inner peripheral surface of the cylindrical portion 24. The inner diameter of the tip of the adapter 25 is enlarged, and a nut 21 having an annular groove (described later) is fitted into the inner diameter. adapter 2
A plurality of grooves 34 (FIG. 4) are provided at the distal end of the groove 5 at intervals in the circumferential direction, and the ball 32 is held in these grooves.

ソケツト18の基端部に円筒部19に連通する
油穴20が設けられ、この油穴20がドリルユニ
ツトの油穴11と連通される。
An oil hole 20 communicating with the cylindrical portion 19 is provided at the base end of the socket 18, and this oil hole 20 communicates with the oil hole 11 of the drill unit.

ソケツト18の基端部23はアダプタ25の円
筒部24へ嵌合されかつキー29により固定され
る。アダプタ25の基端側にボルト28が螺合さ
れ、この先端がソケツト18の周面に係合され
る。基端部23にナツト21が螺合され、かつボ
ルト33により固定される。ナツト21の外周面
に設けた環状溝22に前述したボール32が案内
される。
The proximal end 23 of the socket 18 is fitted into the cylindrical portion 24 of the adapter 25 and fixed by a key 29. A bolt 28 is screwed onto the proximal end of the adapter 25, and its tip is engaged with the circumferential surface of the socket 18. A nut 21 is screwed onto the base end 23 and fixed with a bolt 33. The aforementioned ball 32 is guided in an annular groove 22 provided on the outer peripheral surface of the nut 21.

第4図に示すように、ボール32が環状溝22
に係合し、かつアダプタ25の割溝34の端壁3
6に係合する状態に保持するために、円錐面35
を有する袋ナツト31がアダプタ25に螺合さ
れ、かつボルト42(第3図)により固定され
る。43,44は油穴20と油穴11との接続部
からの油洩れを防止するシールリングである。
As shown in FIG.
and the end wall 3 of the slot 34 of the adapter 25
conical surface 35 to hold it in engagement with 6.
A cap nut 31 having a diameter is screwed onto the adapter 25 and fixed with a bolt 42 (FIG. 3). Seal rings 43 and 44 prevent oil from leaking from the connection between the oil hole 20 and the oil hole 11.

上述のガンドリルの取付装置において、ソケツ
ト18のねじ軸部23に螺合したナツト21の環
状溝にボール32を案内支持するとともに、ボー
ル32を袋ナツト31によりアダプタ25の割溝
34の端壁36に押し付けると、アダプタ25に
対するソケツト18の軸方向移動が阻止され、ま
たキー29により相対回転が阻止される。このよ
うにして、アダプタ25とソケツト18およびガ
ンドリル1が一体的に結合され、ドリルユニツト
のスピンドル部の回転力およびスラスト荷重が刃
先チツプ10へ伝達される。
In the gun drill mounting device described above, the ball 32 is guided and supported in the annular groove of the nut 21 screwed onto the threaded shaft portion 23 of the socket 18, and the ball 32 is inserted into the end wall 36 of the slot 34 of the adapter 25 by the cap nut 31. When pressed, axial movement of the socket 18 relative to the adapter 25 is prevented, and the key 29 prevents relative rotation. In this way, the adapter 25, the socket 18, and the gun drill 1 are integrally connected, and the rotational force and thrust load of the spindle portion of the drill unit are transmitted to the cutting edge tip 10.

ガンドリル1を交換する場合には、ボルト42
と28を緩めて袋ナツト31を軸方向へ少し移動
すると、アダプタ25からソケツト18、ナツト
21を引き出して簡単に外すことができる。
When replacing gun drill 1, use bolt 42.
28 and slightly move the cap nut 31 in the axial direction, the socket 18 and nut 21 can be pulled out from the adapter 25 and easily removed.

[考案の効果] 本考案は上述のように、油穴を有するソケツト
の基端部をスピンドルに回転結合するとともに、
前記油穴と同軸の円筒部を有するソケツトの先端
部をチツプボツクスの壁部に回転可能に支持し、
前記円筒部にガンドリルのドライブ部を嵌合し、
かつ円筒形の押えねじを螺合したから、ガンドリ
ルのシヤンクの実質的長さ(ソケツトからの突出
長さ)が短縮され、従来例に比べてシヤンクの座
屈に対する強度が減じられる。したがつて、それ
だけスラスト荷重を大きくでき、切削能率が向上
される。
[Effects of the invention] As mentioned above, the invention rotatably connects the base end of the socket having the oil hole to the spindle, and
The tip of the socket having a cylindrical portion coaxial with the oil hole is rotatably supported on the wall of the tip box,
Fitting the drive part of the gun drill into the cylindrical part,
In addition, since the cylindrical cap screw is screwed together, the substantial length of the shank of the gun drill (length protruding from the socket) is shortened, and the strength against buckling of the shank is reduced compared to the conventional example. Therefore, the thrust load can be increased accordingly, and cutting efficiency is improved.

また、従来のチツプボツクスに対するガンドリ
ルを支持する割りブツシユが不必要となり、切屑
ポケツトの拡大が可能になる。割りブツシユを使
用しないので、所定使用時間の経過後に、直ちに
ガンドリルを刃先交換位置まで簡単に後退させる
ことができ(割りブツシユを用いる場合は、直ち
にガンドリルを後退させると、シヤンクのV溝か
ら油がチツプボツクスの外へ洩れる恐れがあ
る)、交換作業が用意になる。
Additionally, the split bushing that supports the gun drill for conventional chip boxes is no longer necessary, and the chip pocket can be enlarged. Since a split button is not used, the gun drill can be easily moved back to the cutting edge replacement position immediately after the specified usage time has elapsed. (There is a risk of leakage outside the tip box), replacement work is easy.

また、加工する深穴の深さに対応して長さの異
なるソケツトを用意すれば、同一長さのガンドリ
ルを共用することができ、工具の維持管理が簡便
になる。
Furthermore, if sockets with different lengths are prepared depending on the depth of the deep hole to be machined, gun drills of the same length can be shared, and maintenance and management of tools becomes easier.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来のガンドリルによる切削状態を示
す側面断面図、第2図は本考案に係るガンドリル
による切削状態を示す側面断面図、第3図は本考
案に係るガンドリルの取付装置を示す側面断面
図、第4図は同装置の要部拡大図である。 1:ガンドリル、5:ドライブ部、6:シヤン
ク、10:刃先チツプ、16:押えねじ、18:
ソケツト、21:ナツト、22:環状溝、25:
アダプタ。
FIG. 1 is a side cross-sectional view showing cutting conditions with a conventional gun drill, FIG. 2 is a side cross-sectional view showing cutting conditions with a gun drill according to the present invention, and FIG. 3 is a side cross-sectional view showing a gun drill mounting device according to the present invention. 4 are enlarged views of the main parts of the device. 1: Gun drill, 5: Drive part, 6: Shank, 10: Cutting edge tip, 16: Holding screw, 18:
socket, 21: nut, 22: annular groove, 25:
adapter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油穴を有するソケツトの基端部をスピンドルに
回転結合するとともに、前記油穴と同軸の円筒部
を有するソケツトの先端部をチツプボツクスの壁
部に回転可能に支持し、前記円筒部にガンドリル
のドライブ部を嵌合し、かつ円筒形の押えねじを
螺合したことを特徴とするガンドリルの取付装
置。
A base end of a socket having an oil hole is rotatably coupled to a spindle, a tip end of the socket having a cylindrical part coaxial with the oil hole is rotatably supported on a wall of a chip box, and a gun drill drive is attached to the cylindrical part. A gun drill mounting device characterized in that the parts are fitted together and a cylindrical retaining screw is screwed together.
JP864982U 1982-01-27 1982-01-27 Gun drill mounting device Granted JPS58113406U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP864982U JPS58113406U (en) 1982-01-27 1982-01-27 Gun drill mounting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP864982U JPS58113406U (en) 1982-01-27 1982-01-27 Gun drill mounting device

Publications (2)

Publication Number Publication Date
JPS58113406U JPS58113406U (en) 1983-08-03
JPS6225291Y2 true JPS6225291Y2 (en) 1987-06-29

Family

ID=30021329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP864982U Granted JPS58113406U (en) 1982-01-27 1982-01-27 Gun drill mounting device

Country Status (1)

Country Link
JP (1) JPS58113406U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238794U (en) * 1975-09-12 1977-03-18

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596970Y2 (en) * 1979-04-24 1984-03-03 株式会社小松製作所 Gundrill machine tool chip box device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238794U (en) * 1975-09-12 1977-03-18

Also Published As

Publication number Publication date
JPS58113406U (en) 1983-08-03

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