JPH0735688Y2 - Tool for internal surface machining of cylindrical work - Google Patents
Tool for internal surface machining of cylindrical workInfo
- Publication number
- JPH0735688Y2 JPH0735688Y2 JP1988123479U JP12347988U JPH0735688Y2 JP H0735688 Y2 JPH0735688 Y2 JP H0735688Y2 JP 1988123479 U JP1988123479 U JP 1988123479U JP 12347988 U JP12347988 U JP 12347988U JP H0735688 Y2 JPH0735688 Y2 JP H0735688Y2
- Authority
- JP
- Japan
- Prior art keywords
- tool
- cylindrical work
- work
- shank
- cutting
- 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 - Fee Related
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、旋盤等に取付けられて、円筒状のワークの内
面を切削加工するためのバイトに関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cutting tool which is attached to a lathe or the like for cutting the inner surface of a cylindrical work.
従来のこの種のバイトは、例えば第３図に（Ａ）で示す
ように、シャンク（Ｂ）の先端部側面より、チップ
（Ｃ）における切刃（Ｄ）を突出させたものが一般的で
ある。A conventional cutting tool of this type is generally one in which a cutting edge (D) of a tip (C) is projected from a side surface of a tip end portion of a shank (B), as shown in FIG. 3 (A), for example. is there.
上記バイト（Ａ）を軸線（Ｌ）まわりに回転させつつ、
自動車用エンジンバルブのバルブリテーナ用ケースであ
る２重円筒状ワークの内面を加工するとする。While rotating the cutting tool (A) around the axis (L),
Suppose that the inner surface of a double cylindrical work that is a case for a valve retainer of an automobile engine valve is machined.
すなわち、第３図に示すように、前端を端板（Ｅ）で閉
塞した外筒（Ｆ）の内側に、端板（Ｅ）より離隔する内
筒（Ｇ）を、支片（Ｈ）をもって配設した２重円筒状の
ワーク（Ｉ）の内筒（Ｇ）の内面を切削すると、切粉
（Ｊ）は、端板（Ｅ）の後側の拡大孔（Ｋ）内に進入す
る。That is, as shown in FIG. 3, the inner cylinder (G) separated from the end plate (E) is held inside the outer cylinder (F) whose front end is closed by the end plate (E) with the support piece (H). When the inner surface of the inner cylinder (G) of the disposed double-cylindrical work (I) is cut, the cutting chips (J) enter the enlarged hole (K) on the rear side of the end plate (E).
この拡大孔（Ｋ）内に進入した切粉（Ｊ）を、加工終了
後に、通常の洗浄作業のみによって完全に除去すること
は困難である。It is difficult to completely remove the cutting chips (J) that have entered the enlarged holes (K) only by a normal cleaning operation after the processing is completed.
また、拡大孔（Ｋ）が上記のような袋状であると、その
中に進入した切粉（Ｊ）を完全に除去し得たか否かを視
認することは難しく、万一切粉（Ｊ）が拡大孔（Ｋ）内
に残っていると、ワーク（Ｉ）の使用時に、切粉（Ｊ）
がワーク（Ｉ）の拡大孔（Ｋ）の内面を傷つけたり、又
は他部材（図示略）との間に挾み込まれて、作動不良を
招いたりする恐れがある。Further, if the enlarged hole (K) is in the shape of a bag as described above, it is difficult to visually confirm whether or not the cutting chips (J) that have entered into the expansion hole can be completely removed. ) Remains in the enlarged hole (K), when the work (I) is used, chips (J)
May damage the inner surface of the enlarged hole (K) of the work (I), or may be caught between other members (not shown), resulting in malfunction.
本考案は、従来のバイトが有するこのような問題点を解
決した円筒状ワークの内面加工用バイトを提供すること
を目的としている。An object of the present invention is to provide a tool for machining the inner surface of a cylindrical work, which solves the above problems of the conventional tool.
上記目的を達成するため、本考案は、シャンクの先端部
側面に切刃を有する円筒状ワークの内面加工用バイトに
おいて、前記シャンクの先端部を丸棒状とし、該シャン
クの先端部側面に、側方に向かって開口する凹入孔を設
け、前記切刃を前記凹入孔の内部に設けるとともに、該
凹入孔が、切粉が前方へ向かうのを阻止する閉塞部と、
該閉塞部と連続し、かつ前記シャンクの前端部側から後
方へ向けて曲率が大となる案内面と逃がし面を備え、逃
がし面の後端を斜め外側に向けたことを特徴としてい
る。To achieve the above object, the present invention relates to a tool for machining the inner surface of a cylindrical work having a cutting edge on the side surface of the tip of the shank. A recessed hole that opens toward one side is provided, and the cutting blade is provided inside the recessed hole, and the recessed hole is a closing portion that blocks chips from going forward.
It is characterized in that it is provided with a guide surface and a relief surface which are continuous with the closing portion and have a large curvature from the front end side of the shank toward the rear, and the rear end of the relief surface is directed obliquely outward.
本考案のバイトを用いて２重円筒状ワークの内面を切削
加工すると、切粉は、まずシャンクの先端部側面に設け
た凹入孔内に溜まり、ワークの前端の拡大孔内に進入す
るのが阻止される。When the inner surface of the double cylindrical work is cut by using the cutting tool of the present invention, the chips are first accumulated in the recessed hole provided on the side surface of the tip of the shank and enter the enlarged hole at the front end of the work. Is blocked.
この切粉は、案内面および逃がし面に沿って、バイトの
基部方向へ移動して排出されるので、バイトをワーク内
より抜き出した際に、ワーク内に切粉が残留することは
ほとんどない。The chips move along the guide surface and the relief surface toward the base of the cutting tool and are discharged. Therefore, when the cutting tool is taken out from the work, the cutting chips hardly remain in the work.
第１図及び第２図は、本考案の一実施例のバイトを用い
て、自動車用エンジンバルブのバルブリテーナ用ケース
である２重円筒状ワークの内面加工を行なっているとき
の状態を示す。FIGS. 1 and 2 show a state in which an inner surface of a double cylindrical work, which is a case for a valve retainer of an automobile engine valve, is being machined by using a cutting tool according to an embodiment of the present invention.
丸棒状のバイト（１）の先端におけるホルダ（２）の前
端には、バイト（１）の軸線（３）を含み、かつホルダ
（２）の外周面から前端方向へ向かって次第に軸線
（３）方向に向かって深くなる直線状の底面（４）を有
する保持溝（５）が設けられている。The front end of the holder (2) at the tip of the round bar-shaped bite (1) includes the axis (3) of the bite (1), and gradually extends from the outer peripheral surface of the holder (2) toward the front end (3). A holding groove (5) having a linear bottom surface (4) that becomes deeper in the direction is provided.
ホルダ（２）の前端部の一側には、径方向に凹入し、か
つ側方に開口する凹入孔（６）が設けられている。A recessed hole (6) is provided on one side of the front end of the holder (2) so as to be recessed in the radial direction and open laterally.
凹入孔（６）は、ホルダ（２）の径とほぼ等しい径の円
弧状案内面（７）の後側に、後端が斜め外側方を向く大
円弧の逃がし面（８）を連設したもので、その径方向の
奥部である底面（９）は、保持溝（５）の外側面と合致
している。凹入孔（６）の入口側口縁の前端は、やや後
方を向く係止縁（10）となっており、その前側面は、閉
塞部（11）となっている。The recessed hole (6) is provided with a large arc relief surface (8) having a rear end facing obliquely outwardly, on the rear side of the arcuate guide surface (7) having a diameter substantially equal to that of the holder (2). The bottom surface (9), which is the inner part in the radial direction, coincides with the outer surface of the holding groove (5). The front end of the entrance-side rim of the recessed hole (6) is a locking edge (10) facing slightly rearward, and the front side surface thereof is a closed portion (11).
凹入孔（６）の案内面（７）および逃がし面（８）の外
側には、円周方向を向く受止縁（12）が連設されてい
る。On the outside of the guide surface (7) and the relief surface (8) of the recessed hole (6), a receiving edge (12) facing the circumferential direction is continuously provided.
保持溝（５）内の前端には、三角形状のチップ（13）が
嵌入され、ピン（14）をもってホルダ（２）に止着され
ている。A triangular tip (13) is fitted into the front end of the holding groove (5) and is fixed to the holder (2) with a pin (14).
このバイト（１）を用いて、第３図に示したのと同様の
ワーク（Ｉ）における内筒（Ｇ）の内面を切削するもの
とする。It is assumed that the cutting tool (1) is used to cut the inner surface of the inner cylinder (G) in the work (I) similar to that shown in FIG.
２重円筒状ワーク（Ｉ）を、旋盤等により軸線（３）を
中心に回転させつつ、バイト（１）を軸線（３）に沿っ
て徐々に移動させる。While rotating the double cylindrical work (I) around the axis (3) by a lathe or the like, the bite (1) is gradually moved along the axis (3).
内筒（Ｇ）の内面は、チップ（13）により切削され、そ
の先端より、切粉（Ｊ）が螺旋状に巻回しながら出てく
る。この切粉（Ｊ）は、閉塞部（11）によりバイト
（１）の前方へ向かうのが阻止され、かつ案内面（７）
と逃がし面（８）に沿って、後方へ送られるとともに、
バイト（１）の側方へ排出される。The inner surface of the inner cylinder (G) is cut by the tip (13), and the chips (J) are spirally wound and come out from the tip thereof. The cutting chips (J) are prevented from moving toward the front of the cutting tool (1) by the closing part (11), and the guide surface (7).
And along with the relief surface (8) is sent to the rear,
It is discharged to the side of the cutting tool (1).
したがって、加工終了後に、ワーク（Ｉ）の拡大孔
（Ｋ）内や外筒（Ｆ）の内面に切粉（Ｊ）が残留するこ
とはなく、ワーク（Ｉ）内は美麗に保たれ、かつ切粉
（Ｊ）を除去するための洗浄作業は不要となる。Therefore, after the processing is completed, the cutting chips (J) do not remain in the enlarged hole (K) of the work (I) or the inner surface of the outer cylinder (F), and the work (I) is kept beautiful and Cleaning work for removing the cutting chips (J) is not required.
さらに本考案の重要な特徴は、バイト（１）の外径より
も、内径が大きい円筒状のワークならば、どのようなも
のでも、同一の切粉除去効果が得られ、ワークの内径に
合わせてバイト（１）を交換したり、そのために外径の
異なる多数のバイトを用意しておく必要がないという点
にある。Further, an important feature of the present invention is that the same chip removing effect can be obtained with any cylindrical work having an inner diameter larger than the outer diameter of the cutting tool (1), and it can be adjusted to the inner diameter of the work. It is not necessary to replace the cutting tool (1) or to prepare a large number of cutting tools having different outer diameters.
このことは、バイト（１）の案内面（７）および逃がし
面（８）が、常にワーク（Ｉ）の内面と向きあってい
て、蓋をされた状態にあることに起因する。This is because the guide surface (7) and the relief surface (8) of the cutting tool (1) always face the inner surface of the work (I) and are in a covered state.
また、本考案は、上記実施例のようなホルダとチップと
からなるスローアウェイ型のバイトだけでなく、完成バ
イトや刃付バイト等にも適用できることはもちろんであ
る。Further, the present invention can be applied not only to the throw-away type bite consisting of the holder and the tip as in the above-mentioned embodiment, but also to a completed bite or a bite with a blade.
本考案によると、次のような効果を得ることができる。 According to the present invention, the following effects can be obtained.
（ａ）円筒状ワークの内面加工を行う際、バイトの外径
よりも大きい内径を有する円筒状ワークであれば、どの
ようなものでも、同一の切粉除去効果を奏することがで
き、ワークの内径に合わせてバイトを交換したり、その
ために径の異なる多数のバイトを用意したりする必要が
ない。(A) When machining the inner surface of a cylindrical work, the same chip removing effect can be obtained with any cylindrical work having an inner diameter larger than the outer diameter of the cutting tool. It is not necessary to replace the cutting tool according to the inner diameter or to prepare a large number of cutting tools having different diameters.
（ｂ）切刃から発生する切粉のすべてを、バイトにおけ
る案内面および逃がし面内に導き、かつそれらの面に沿
って、ワークの凹入孔の開口より、外部へ確実に排出す
ることができる。(B) It is possible to guide all of the chips generated from the cutting edge to the inside of the guide surface and the escape surface of the cutting tool, and to reliably discharge them along the surfaces through the opening of the recessed hole of the work. it can.
【図面の簡単な説明】 第１図は、本考案の一実施例を用いて２重円筒状ワーク
の内筒の内面の加工を行なっている状態を示す縦断側面
図、 第２図は、第１図のＸ−Ｘ線に沿う縦断面図、 第３図は、従来のバイトを用いて、２重円筒状ワークの
内筒の内面の加工を行なっている状態を示す縦断側面図
である。 （１）バイト （２）ホルダ （３）軸線 （４）底面 （５）保持溝 （６）凹入孔 （７）案内面 （８）逃がし面 （９）底面 （10）係止縁 （11）閉塞部 （12）受止縁 （13）チップ （14）ピンBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical cross-sectional side view showing a state in which an inner surface of an inner cylinder of a double cylindrical work is processed by using an embodiment of the present invention, and FIG. FIG. 1 is a vertical cross-sectional view taken along line XX of FIG. 1, and FIG. 3 is a vertical cross-sectional side view showing a state in which the inner surface of the inner cylinder of the double cylindrical work is processed using a conventional cutting tool. (1) Tool (2) Holder (3) Axis (4) Bottom (5) Holding groove (6) Recessed hole (7) Guide surface (8) Relief surface (9) Bottom surface (10) Locking edge (11) Block (12) Receiving edge (13) Tip (14) Pin
Claims (1)
状ワークの内面加工用バイトにおいて、前記シャンクの
先端部を丸棒状とし、該シャンクの先端部側面に、側方
に向かって開口する凹入孔を設け、前記切刃を前記凹入
孔の内部に設けるとともに、該凹入孔が、切粉が前方へ
向かうのを阻止する閉塞部と、該閉塞部と連続し、かつ
前記シャンクの前端部側から後方へ向けて曲率が大とな
る案内面と逃がし面を備え、逃がし面の後端を斜め外側
に向けたことを特徴とする円筒状ワークの内面加工用バ
イト。1. A tool for inner surface machining of a cylindrical work having a cutting edge on the side surface of the tip of the shank, wherein the shank has a round bar-like shape, and the side surface of the shank is laterally opened. A recessed hole is provided, the cutting blade is provided inside the recessed hole, and the recessed hole is continuous with the closing portion that prevents chips from going forward, and the shank. A tool for machining the inner surface of a cylindrical work, comprising a guide surface and a relief surface having a large curvature from the front end side toward the rear, and the rear end of the relief surface facing obliquely outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988123479U JPH0735688Y2 (en) | 1988-09-22 | 1988-09-22 | Tool for internal surface machining of cylindrical work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988123479U JPH0735688Y2 (en) | 1988-09-22 | 1988-09-22 | Tool for internal surface machining of cylindrical work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0247108U JPH0247108U (en) | 1990-03-30 |
| JPH0735688Y2 true JPH0735688Y2 (en) | 1995-08-16 |
Family
ID=31372372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988123479U Expired - Fee Related JPH0735688Y2 (en) | 1988-09-22 | 1988-09-22 | Tool for internal surface machining of cylindrical work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735688Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013003288A1 (en) * | 2013-02-26 | 2014-08-28 | Gleason-Pfauter Maschinenfabrik Gmbh | Method for machining or machining an internal toothing, movement changing device and machine tool |
| JP7004250B2 (en) * | 2018-05-30 | 2022-01-21 | 株式会社タンガロイ | Rotary cutting tools and chip dividers |
| CN113811410A (en) * | 2019-05-15 | 2021-12-17 | 住友电工硬质合金株式会社 | Boring cutter frame and turning cutter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4736453U (en) * | 1971-05-06 | 1972-12-22 | ||
| JP2620255B2 (en) * | 1987-09-30 | 1997-06-11 | 京セラ株式会社 | Internal machining tools |
-
1988
- 1988-09-22 JP JP1988123479U patent/JPH0735688Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0247108U (en) | 1990-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |