JP2003094243A - Adjustable reader - Google Patents

Adjustable reader

Info

Publication number
JP2003094243A
JP2003094243A JP2001288821A JP2001288821A JP2003094243A JP 2003094243 A JP2003094243 A JP 2003094243A JP 2001288821 A JP2001288821 A JP 2001288821A JP 2001288821 A JP2001288821 A JP 2001288821A JP 2003094243 A JP2003094243 A JP 2003094243A
Authority
JP
Japan
Prior art keywords
hole
cylindrical member
hollow cylindrical
cutting surface
screw rod
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.)
Pending
Application number
JP2001288821A
Other languages
Japanese (ja)
Inventor
Makoto Kobayashi
誠 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobayashi Engineering Works Ltd
Original Assignee
Kobayashi Engineering Works Ltd
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 by Kobayashi Engineering Works Ltd filed Critical Kobayashi Engineering Works Ltd
Priority to JP2001288821A priority Critical patent/JP2003094243A/en
Publication of JP2003094243A publication Critical patent/JP2003094243A/en
Pending legal-status Critical Current

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  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a new type adjustable reamer which can finely adjust the outside diameter of a cutting surface and further can cope with prepared holes having an inside diameter from a small-to-large diameters. SOLUTION: In the adjustable reamer composed of a hollow cylindrical member which is provided with a threaded hole at a rear end part thereof, a taper hole at a middle part thereof, and a through hole at a tip end part thereof, and serves as a cutting surface having abrasive grains suck on an outside peripheral surface of a middle part cylindrical wall, an adjusting screw rod which is movably screwed into the threaded hole from the rear end side, and a taper pin which is slidably inserted into the taper hole, the hollow cylindrical member is provided with a plurality of longitudinal slits on the middle cylindrical wall in parallel with each other and the outside diameter of the cutting surface can be finely adjusted by sliding the taper pin by turning the adjusting screw rod.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、ドリル等の工具な
どによってあけられた下穴の内面や円筒内面等をさらに
精度高く、仕上面を良好にするために用いられる穴ぐり
工具であって、切削面の外径の寸法を微調整可能とした
アジャスタブルリーマに関する。なお、本明細書におい
ては、本発明に係る穴ぐり工具をアジャスタブルリーマ
と称するが、一般的には、ラップ棒と称されることもあ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring tool used for improving the accuracy of the inner surface of a prepared hole and the inner surface of a cylinder formed by a tool such as a drill or the like, and improving the finished surface. The present invention relates to an adjustable reamer capable of finely adjusting the outer diameter of a cutting surface. In addition, in this specification, the boring tool according to the present invention is referred to as an adjustable reamer, but it may be generally referred to as a lap rod.

【0002】[0002]

【関連技術】従来、切削面の外形の寸法を調整可能とし
たリーマとしては、例えば、特開昭56−114668
号公報に開示された工具等が知られている。
Related Art Conventionally, as a reamer capable of adjusting the outer dimension of a cutting surface, for example, Japanese Patent Laid-Open No. 56-114668 is available.
The tools and the like disclosed in the publication are known.

【0003】しかし、上述のような工具は、径の大きな
下穴(例えば、穴径30mmφ等)の内面仕上げには適
しているが、その構造上、工具自体を大きく設計せざる
を得ないため、径の小さな下穴の内面や円筒内面等を切
削加工する際には、使用することができなかった。
However, although the above-mentioned tool is suitable for finishing the inner surface of a prepared hole having a large diameter (for example, a hole diameter of 30 mmφ), the tool itself has to be designed large because of its structure. However, it could not be used for cutting the inner surface of a pilot hole having a small diameter or the inner surface of a cylinder.

【0004】特に、近年、切削加工の分野においては、
より高い仕上げ精度が要求されてきており、小さな径の
下穴(例えば、穴径3mmφ)等に対して1/1000
mm単位で寸法の微調整を行うことがある。
Particularly in recent years, in the field of cutting,
Higher finishing accuracy is required, and it is 1/1000 for pilot holes with small diameter (for example, hole diameter 3mmφ).
Fine adjustment of dimensions may be performed in units of mm.

【0005】このような微小な下穴の内面仕上げを行お
うとすると、上述したような従来の切削面の外径の寸法
が調整可能なリーマでは小径の下穴には対応できず、そ
のため、その都度わずかに径の異なるリーマを使用せざ
るをえなかった。
When attempting to finish the inner surface of such a small prepared hole, the conventional reamer capable of adjusting the outer diameter of the cutting surface as described above cannot cope with a prepared hole having a small diameter. I had to use a reamer with a slightly different diameter each time.

【0006】しかし、このようなわずかな寸法調整のた
び毎に異なる工具を使用するとなると、あらゆる径に対
応したリーマが必要となり、多大なコストがかかる。そ
のため、小さな径の下穴から大きな径の下穴まで対応で
きる工具の出現が望まれていた。
However, if a different tool is used each time such a slight size adjustment is made, a reamer corresponding to all diameters is required, resulting in a great cost. Therefore, it has been desired to develop a tool capable of handling a prepared hole having a small diameter to a prepared hole having a large diameter.

【0007】[0007]

【発明が解決しようとする課題】本発明は、上述したよ
うな従来の課題に鑑みなされたもので、切削面の外径の
寸法が微調整可能であり、かつ小さな径の下穴から大き
な径の下穴にまで対応可能な新規のアジャスタブルリー
マを提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. The outer diameter of the cutting surface can be finely adjusted, and a large diameter can be obtained from a prepared hole having a small diameter. The purpose is to provide a new adjustable reamer that can handle even pilot holes.

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
に、本発明のアジャスタブルリーマは、後端部にネジ
孔、中央部にテーパ孔及び先端部に貫通孔をそれぞれ設
け、中央部円筒壁外周面を砥粒を固着した切削面として
なる中空円筒部材と、該ネジ孔に後端方向から螺動自在
に螺着される調整ネジ棒と、該テーパ孔に摺動自在に挿
着されるテーパピンと、からなるアジャスタブルリーマ
であって、該中空円筒部材の中央部円筒壁の長手方向に
互いに平行する複数のすり割りを設け、該調整ネジ棒の
螺動により、該テーパピンを摺動させることによって、
切削面の外径の寸法を微調整可能としたことを特徴とす
る。
In order to solve the above-mentioned problems, the adjustable reamer of the present invention is provided with a screw hole at the rear end, a tapered hole at the center and a through hole at the tip, and a cylindrical wall at the center. A hollow cylindrical member having an outer peripheral surface serving as a cutting surface to which abrasive grains are fixed, an adjusting screw rod screwed into the screw hole from the rear end direction, and slidably inserted in the taper hole. An adjustable reamer comprising a taper pin and a plurality of slits parallel to each other in a longitudinal direction of a central cylindrical wall of the hollow cylindrical member, wherein the taper pin is slid by screwing the adjusting screw rod. By
The feature is that the outer diameter of the cutting surface can be finely adjusted.

【0009】該複数のすり割りとしては、該中空円筒部
材の半径方向に等間隔に3又は4本設けるのが好適であ
る。
It is preferable that three or four slits are provided at equal intervals in the radial direction of the hollow cylindrical member.

【0010】また、該テーパピン及び該調整ネジ棒を該
中空円筒部材の後端部から挿入する構成とすることによ
り、ネジ孔が該中空円筒部材の後端部に設けられるた
め、該中空円筒部材の先端部には貫通孔を設けるだけで
すみ、その結果、該中空円筒部材の径を小さく(例え
ば、穴径3mmφの下穴等に対応可能な程度)すること
ができる。
Further, since the taper pin and the adjusting screw rod are inserted from the rear end portion of the hollow cylindrical member, the screw hole is provided at the rear end portion of the hollow cylindrical member. It suffices to provide a through hole at the tip end of the hollow cylindrical member, and as a result, the diameter of the hollow cylindrical member can be reduced (for example, to the extent that it can correspond to a pilot hole having a hole diameter of 3 mm).

【0011】該テーパピンが押し込まれすぎて、該切削
面の外径の寸法が拡大しすぎた場合には、該調整ネジ棒
を螺動後退せしめ、該中空円筒部材の先端部に設けられ
た貫通孔に棒状体の工具等を挿入し、該テーパピンの先
端を叩くことにより該テーパピンが押し戻され、好適な
外径の寸法に再度調整することができる。
If the taper pin is pushed in too much and the outer diameter of the cutting surface becomes too large, the adjusting screw rod is screwed back and the through hole provided at the tip of the hollow cylindrical member is penetrated. By inserting a rod-shaped tool or the like into the hole and striking the tip of the taper pin, the taper pin is pushed back, and the outer diameter can be adjusted again to a suitable size.

【0012】さらに、該テーパピンと該調整ネジ棒が別
体とされているために、該調整ネジ棒を螺動せしめた際
の回転運動が、該テーパピンを摺動前進させる直線運動
へと変化されることにより、該テーパ孔の内壁と該テー
パピンの外周面との競り合いがなくなり、接触摩擦がほ
とんど生じない。そのため、該テーパ孔内面に接触摩擦
を減少させるための精密研磨加工を行う必要がなくな
る。
Further, since the taper pin and the adjusting screw rod are separate bodies, the rotational movement when the adjusting screw rod is screwed is changed to a linear movement for sliding the taper pin forward. As a result, there is no competition between the inner wall of the tapered hole and the outer peripheral surface of the tapered pin, and contact friction hardly occurs. Therefore, it becomes unnecessary to perform precision polishing for reducing the contact friction on the inner surface of the tapered hole.

【0013】[0013]

【発明の実施の形態】以下、添付図面を参照して本発明
の実施の形態を詳細に説明するが、本発明の技術思想か
ら逸脱しない限り図示例以外にも種々の変形又は変更が
可能なことはいうまでもない。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Various modifications and changes other than the illustrated examples are possible without departing from the technical idea of the present invention. Needless to say.

【0014】図1は本発明のアジャスタブルリーマの一
つの実施の形態を示す分解斜視説明図、図2は本発明の
アジャスタブルリーマの側面図、図3は図2の断面図、
図4は切削面の外径の寸法を拡大した状態を示す横断面
図、図5は図3のV−V線拡大断面図、図6は図4のVI
−VI線拡大断面図である。
FIG. 1 is an exploded perspective view showing an embodiment of an adjustable reamer of the present invention, FIG. 2 is a side view of the adjustable reamer of the present invention, FIG. 3 is a sectional view of FIG.
4 is a transverse cross-sectional view showing a state in which the outer diameter of the cutting surface is enlarged, FIG. 5 is an enlarged cross-sectional view taken along line VV of FIG. 3, and FIG. 6 is VI of FIG.
FIG. 6 is an enlarged sectional view taken along line VI.

【0015】図面において、符号10は本発明のアジャ
スタブルリーマを示す。20は中空円筒部材であって、
その後端部20aにネジ孔12、中央部20bにテーパ
孔14及び先端部20cに貫通孔16がそれぞれ設けら
れている(図3)。該中央部20bの円筒壁21の外周
面は砥粒を固着させた切削面18とされている。22
は、該中空円筒部材20の後端方向から螺動自在に螺着
される調整ネジ棒であり、24はテーパピンである。該
中空円筒部材20の中央部円筒壁21の長手方向にはす
り割り26が設けられている。
In the drawings, reference numeral 10 indicates an adjustable reamer according to the present invention. 20 is a hollow cylindrical member,
The rear end 20a is provided with a screw hole 12, the central portion 20b is provided with a taper hole 14, and the tip portion 20c is provided with a through hole 16 (FIG. 3). The outer peripheral surface of the cylindrical wall 21 of the central portion 20b is a cutting surface 18 to which abrasive grains are fixed. 22
Is an adjusting screw rod screwably attached from the rear end direction of the hollow cylindrical member 20, and 24 is a taper pin. A slot 26 is provided in the longitudinal direction of the central cylindrical wall 21 of the hollow cylindrical member 20.

【0016】該調整ネジ棒22は、長尺押圧棒22a
と、この長尺押圧棒22aの後端部に取りつけられたネ
ジ部22bとから構成されている。該長尺押圧棒22a
は、先端の形状を丸くしておけば、該テーパピン24の
後端面を押圧する際に接触摩擦がほとんど生じないため
都合がよい。該テーパピン24は先端部を切断し後端方
向に径を増大した形状を有している。
The adjusting screw rod 22 is a long pressing rod 22a.
And a threaded portion 22b attached to the rear end of the long pressing rod 22a. The long pressing rod 22a
It is convenient to make the tip round so that contact friction hardly occurs when the rear end surface of the taper pin 24 is pressed. The taper pin 24 has a shape in which the tip end is cut to increase the diameter in the rear end direction.

【0017】該テーパピン24を該中空円筒部材20に
挿入し、該調整ネジ棒22を螺動せしめて該テーパピン
24の後端面を該長尺押圧棒22aによって押圧するこ
とにより、該テーパピン24の後端拡大部が該円筒壁内
周面を外方に押圧することによって、該中空円筒部材2
0の内径が押し広げられ、該切削面18の外径の寸法を
拡大することができるようにされている。
After the taper pin 24 is inserted into the hollow cylindrical member 20, the adjusting screw rod 22 is screwed and the rear end face of the taper pin 24 is pressed by the long pressing rod 22a, The enlarged end portion presses the inner peripheral surface of the cylindrical wall outward, whereby the hollow cylindrical member 2
The inner diameter of 0 is widened so that the outer diameter of the cutting surface 18 can be enlarged.

【0018】該中空円筒部材20の材料としては、鋼
材、例えば、SK、SKD、SKH等を焼入れ加工して
剛性をもたせたものを使用するのが好適である。
As the material of the hollow cylindrical member 20, it is preferable to use a steel material, for example, SK, SKD, SKH or the like that is hardened to have rigidity.

【0019】該中空円筒部材20の中央部円筒壁外周面
に固着される砥粒としては、例えば、ダイヤモンド、ボ
ラゾン、CBN等がある。これらの砥粒を該中央部円筒
壁外周面に蒸着又は電着することにより切削面18を形
成する。ボラゾン砥粒を使用した場合には、高速度鋼や
焼入れ鋼からなる被加工物(ドリル等によってあけられ
た下穴等)に特に好適であり、ダイヤモンド砥粒又はC
BN砥粒を用いれば、超硬合金からなる被加工物にも対
応できる。
The abrasive grains fixed to the outer peripheral surface of the central cylindrical wall of the hollow cylindrical member 20 include, for example, diamond, borazon, CBN and the like. The cutting surface 18 is formed by vapor deposition or electrodeposition of these abrasive grains on the outer peripheral surface of the central cylindrical wall. When using borazon abrasive grains, it is particularly suitable for work pieces (prepared holes formed by a drill etc.) made of high speed steel or hardened steel, and diamond abrasive grains or C
By using BN abrasive grains, it is possible to deal with a work piece made of cemented carbide.

【0020】上記砥粒の粒度及び固着密度については特
別の限定はなく、被加工物の材質や硬度、前加工の状
態、切削量等により最適な粒度及び密度を適宜選択すれ
ばよい。
The grain size and adherence density of the above-mentioned abrasive grains are not particularly limited, and the optimum grain size and density may be appropriately selected depending on the material and hardness of the work piece, the state of pre-processing, the cutting amount and the like.

【0021】また、特に本発明においては、前記すり割
り26を中空円筒部材20の中央部20bに設け、先端
部20cには設けない構成としてあるので、中央部20
bに形成される切削面18の剛性を格段に向上させるこ
とができる。
Further, particularly in the present invention, since the slot 26 is provided in the central portion 20b of the hollow cylindrical member 20 and not in the tip portion 20c, the central portion 20 is not provided.
The rigidity of the cutting surface 18 formed in b can be remarkably improved.

【0022】該すり割り26を設ける本数には特別の限
定はないが、すり割りを多く入れすぎると、該切削面1
8の剛性が低下し、切削加工を行う際に該切削面にゆが
みやひずみが生じる原因となるため、例えば、図5に示
されるように、3本又は4本のすり割りを該中空円筒部
材20の半径方向に等間隔に設けるようにすればよい。
The number of the slits 26 provided is not particularly limited, but if too many slits are provided, the cutting surface 1
Since the rigidity of No. 8 is reduced and causes distortion or distortion in the cutting surface during cutting, for example, as shown in FIG. 5, three or four slits are provided in the hollow cylindrical member. 20 may be provided at equal intervals in the radial direction.

【0023】図2において、該中空円筒部材20の後端
部から該テーパピン24及び該調整ネジ棒22がそれぞ
れ挿入され、該調整ネジ棒22は該中空円筒部材20の
後端部に螺動自在に螺着されている。また、該中空円筒
部材20の先端部には貫通孔16が設けられている。
In FIG. 2, the taper pin 24 and the adjusting screw rod 22 are respectively inserted from the rear end portion of the hollow cylindrical member 20, and the adjusting screw rod 22 is screwed to the rear end portion of the hollow cylindrical member 20. Is screwed to. Further, a through hole 16 is provided at the tip of the hollow cylindrical member 20.

【0024】図3によく示されるごとく、該テーパピン
24及び該調整ネジ棒22を該中空円筒部材20の後端
部から挿入する構成とすることにより、ネジ孔12が該
中空円筒部材20の後端部に設けられるため、該中空円
筒部材20の先端部には貫通孔16を設けるだけです
み、その結果、該中空円筒部材20の径を小さく(例え
ば、穴径3mmφの下穴等に対応可能な程度)すること
ができる。
As shown in FIG. 3, the taper pin 24 and the adjusting screw rod 22 are inserted from the rear end portion of the hollow cylindrical member 20, so that the screw hole 12 is formed in the rear portion of the hollow cylindrical member 20. Since it is provided at the end, it suffices to provide the through hole 16 at the tip of the hollow cylindrical member 20. As a result, the diameter of the hollow cylindrical member 20 can be made small (for example, corresponding to a pilot hole with a hole diameter of 3 mmφ). To the extent possible).

【0025】図3において、14はテーパ孔であり、該
テーパピン24のテーパ角度に対応して設けられる。例
えば、テーパ孔14をテーパピン24のテーパ角度に対
応して設けて、テーパピン14と調整ネジ棒22を一体
成形とすると、該調整ネジ棒22を螺動せしめた際の回
転運動により該テーパピン24も回転運動するため、テ
ーパ孔14の内壁とテーパピン24の外周面とが競り合
い、接触摩擦が大きくなり強い応力となる締付け力を生
じさせ、すり割り26の設けられた切削面の場合には特
に該切削面の変形が生じやすくなってしまう。
In FIG. 3, reference numeral 14 denotes a tapered hole, which is provided in correspondence with the taper angle of the taper pin 24. For example, when the taper hole 14 is provided corresponding to the taper angle of the taper pin 24 and the taper pin 14 and the adjusting screw rod 22 are integrally formed, the taper pin 24 is also rotated by the rotational movement when the adjusting screw rod 22 is screwed. Because of the rotational movement, the inner wall of the taper hole 14 and the outer peripheral surface of the taper pin 24 compete with each other to generate a tightening force that causes a large contact friction and a strong stress. Particularly, in the case of the cutting surface provided with the slot 26, The cutting surface is easily deformed.

【0026】本発明のアジャスタブルリーマ10では、
該テーパピン24と該調整ネジ棒22が別体とされてい
るために、該調整ネジ棒22を螺動せしめた際の回転運
動が、該テーパピン24を摺動前進させる直線運動へと
変化されることにより、上述したようなテーパ孔14の
内壁とテーパピン24の外周面との競り合いがなくな
り、接触摩擦がほとんど生じない。そのため、テーパ孔
14の内面に接触摩擦を減少させるための精密研磨加工
を行う必要がなくなる。
In the adjustable reamer 10 of the present invention,
Since the taper pin 24 and the adjusting screw rod 22 are separate bodies, the rotational movement when the adjusting screw rod 22 is screwed is changed to a linear movement for sliding the taper pin 24 forward. As a result, there is no competition between the inner wall of the tapered hole 14 and the outer peripheral surface of the tapered pin 24 as described above, and contact friction hardly occurs. Therefore, it is not necessary to perform precision polishing for reducing the contact friction on the inner surface of the tapered hole 14.

【0027】図4に示されるごとく、該調整ネジ棒22
によって、該中空円筒部材20の先端方向に摺動前進せ
しめられた該テーパピン24は、該テーパ孔14の中を
進むことにより、該中空円筒部材20の内径を広げる。
このようにして、該切削面18の外径の寸法が拡大され
る(図6)。
As shown in FIG. 4, the adjusting screw rod 22 is provided.
The tapered pin 24 slidably advanced toward the distal end of the hollow cylindrical member 20 advances in the tapered hole 14 to widen the inner diameter of the hollow cylindrical member 20.
In this way, the outer diameter of the cutting surface 18 is enlarged (FIG. 6).

【0028】なお、該テーパピン24が押し込まれすぎ
て、該切削面18の外径の寸法が拡大しすぎた場合に
は、該調整ネジ棒22を螺動後退せしめ、該中空円筒部
材20の先端部に設けられた貫通孔16に棒状体の工具
(図示せず)等を挿入し、該テーパピン24の先端を叩
くことにより該テーパピン24が押し戻され、好適な外
径の寸法に再度調整することができる。
When the taper pin 24 is pushed in too much and the outer diameter of the cutting surface 18 becomes too large, the adjusting screw rod 22 is screwed back to the tip of the hollow cylindrical member 20. Insert a rod-shaped tool (not shown) or the like into the through hole 16 provided in the portion and hit the tip of the taper pin 24 to push back the taper pin 24, and adjust again to a suitable outer diameter dimension. You can

【0029】上記の構成により、その作用を説明する。
まず、図1〜3に示されるように、中空円筒部材20の
後端部から、テーパピン24と調整ネジ棒22を挿入
し、該調整ネジ棒22をネジ孔12に螺入していく。
The operation of the above structure will be described.
First, as shown in FIGS. 1 to 3, the taper pin 24 and the adjusting screw rod 22 are inserted from the rear end of the hollow cylindrical member 20, and the adjusting screw rod 22 is screwed into the screw hole 12.

【0030】そして、該調整ネジ棒22を螺動すること
により、該テーパピン24が摺動前進せしめられ、テー
パ孔14の中を進むことにより、該中空円筒部材20の
内径を広げる。このようにして、該切削面18の外径の
寸法が拡大される(図4及び図6)。
Then, by screwing the adjusting screw rod 22, the taper pin 24 is slid forward, and by moving in the taper hole 14, the inner diameter of the hollow cylindrical member 20 is widened. In this way, the dimension of the outer diameter of the cutting surface 18 is enlarged (FIGS. 4 and 6).

【0031】例えば、径8mmφの中空円筒部材20に
対して、1/50テーパのテーパピン24とピッチ0.
5mmのねじ山が螺刻された調整ネジ棒22を用いる場
合には、該調整ネジ棒22を1回転させれば切削面18
の外径の寸法が1/100mm拡大されることとなる。
For example, for a hollow cylindrical member 20 having a diameter of 8 mmφ, a taper pin 24 having a 1/50 taper and a pitch of 0.
When the adjusting screw rod 22 having a thread of 5 mm is engraved, if the adjusting screw rod 22 is rotated once, the cutting surface 18
This means that the outer diameter dimension of 1 is increased by 1/100 mm.

【0032】該テーパピン24及び該テーパ穴14のテ
ーパ角度や該調整ネジ棒22及び該ネジ孔12のピッ
チ、すり割り26の深さ等を変更することにより、該切
削面18の外径の寸法幅は種々の変更が可能であり、例
えば、穴径3mmφ位の小径の下穴等にまで対応が可能
となる。
By changing the taper angle of the taper pin 24 and the taper hole 14, the pitch of the adjusting screw rod 22 and the screw hole 12, the depth of the slit 26, etc., the outer diameter of the cutting surface 18 can be measured. The width can be variously changed, and for example, it is possible to correspond to a prepared hole having a small diameter of about 3 mmφ.

【0033】また、例えば、穴基準はめあいH7で径3
mmφの場合に10/1000mm又は穴基準はめあい
H6で径6mmφの場合に8/1000mm等の公差に
被加工物である下穴を切削加工仕上げを行った後、焼入
れ加工を施した際に、該下穴が変形及び縮小して、ゲー
ジが入らなくなってしまった場合でも、本発明のアジャ
スタブルリーマは、テーパピン24及びテーパ穴14の
テーパ角度や調整ネジ棒22のピッチの条件により、切
削面18の外径の寸法の調整幅を算出可能なため、ゲー
ジが入らなくなってしまった下穴でも良好に仕上げるこ
とが可能となる。
Further, for example, a hole-based fitting H7 has a diameter of 3
In the case of mmφ, when the prepared hole which is the workpiece is subjected to the cutting finish after the machining of the prepared hole to the tolerance of 10/1000 mm in the case of the hole standard fitting H6 and the diameter of 6 mmφ in the case of the diameter of 6 mmφ, Even when the prepared hole is deformed and reduced and the gauge cannot be inserted, the adjustable reamer of the present invention can adjust the cutting surface 18 of the cutting surface 18 depending on the conditions of the taper angle of the taper pin 24 and the taper hole 14 and the pitch of the adjusting screw rod 22. Since the adjustment width of the outer diameter can be calculated, it is possible to satisfactorily finish even the prepared hole where the gauge cannot fit.

【0034】さらに、例えば、穴基準はめあいH7でG
6号に下穴を加工した後、他の場所を削った際の応力に
より、該下穴が変形してゲージが入らなくなった場合で
も本発明のアジャスタブルリーマを使用することによ
り、該下穴を良好に仕上げることが可能となる。
Further, for example, when the hole fitting is H7, G
Even after the pilot hole is machined in No. 6, even when the pilot hole is deformed and the gauge cannot be inserted due to the stress when the other place is cut, the adjustable reamer of the present invention is used to remove the pilot hole. It is possible to finish well.

【0035】材質によっては、同じ径の穴ぐり工具、例
えばリーマ、を同一条件で使用しても仕上がりにバラつ
きが出て、ゲージの通し止めによる仕上がり精度の測定
がクリアできない時等にも本発明のアジャスタブルリー
マを使用することができる。
Even when a boring tool having the same diameter, for example, a reamer is used under the same conditions depending on the material, the finish may vary, and the present invention can be used even when the measurement of the finish accuracy by stopping the gauge cannot be cleared. Adjustable reamers can be used.

【0036】また、被加工物をメッキ又は陽極酸化皮膜
(アルマイト)処理した際に予定以上に該メッキ又は陽
極酸化皮膜が厚く付着してしまった場合等であっても、
特に、それが硬質アルマイト等の場合には従来の超硬合
金リーマでは歯が立たなかったが、本発明のアジャスタ
ブルリーマを使用することにより所望の精度に仕上げる
ことが可能となる。
Further, even when the workpiece is plated or anodized, and the plated or anodized coating is thicker than expected,
In particular, when it is hard alumite or the like, the conventional cemented carbide reamer did not have teeth, but by using the adjustable reamer of the present invention, it is possible to finish to a desired accuracy.

【0037】穴径6mmφの下穴等を+0.03mmや
+0.04mm等の半端な寸法に仕上げる際に、その寸
法にあったリーマがないときであっても、本発明のアジ
ャスタブルリーマを使用することにより、仕上げ加工を
行うことができる。
When the prepared hole or the like having a hole diameter of 6 mmφ is finished to an odd dimension such as +0.03 mm or +0.04 mm, the adjustable reamer of the present invention is used even when there is no reamer suitable for the dimension. As a result, finishing processing can be performed.

【0038】超硬合金にワイヤ放電加工機で被加工物に
穴をあけた後の磨き工程等にも、本発明のアジャスタブ
ルリーマを好適に使用可能である。
The adjustable reamer of the present invention can be preferably used also in a polishing process after making a hole in a workpiece in a cemented carbide with a wire electric discharge machine.

【0039】例えば、径8mmφの本発明のアジャスタ
ブルリーマを用いて、硬質アルマイト加工後の穴径8m
mφの下穴の修正に手回しで使用した場合、−0.00
5mm、+0.002mmである1000分の7の公差
を、−0.005mm側の通し側のゲージが渋い(−
0.006〜0.008mm)場合にも該下穴の修正が
可能である。
For example, using the adjustable reamer of the present invention having a diameter of 8 mmφ, the hole diameter after hard alumite processing is 8 m.
When used by hand to correct the pilot hole of mφ, -0.00
5 mm, +0.002 mm, the tolerance of 7/1000, the gauge on the through side of -0.005 mm is astringent (-
Even in the case of 0.006 to 0.008 mm), the prepared hole can be corrected.

【0040】特に、上述したような工程において被加工
物の通り穴を内面仕上げする際に、本発明のアジャスタ
ブルリーマは、切削面の外径の寸法を1/1000mm
〜2/1000mmまで微調整を行うことができるた
め、所望の精度に仕上げることができ、極めて効果があ
る。
In particular, when the inner surface of the through hole of the workpiece is finished in the above-mentioned steps, the adjustable reamer of the present invention has an outer diameter of the cutting surface of 1/1000 mm.
Since fine adjustment can be performed up to 2/1000 mm, it is possible to finish to a desired accuracy, which is extremely effective.

【0041】また、本発明のアジャスタブルリーマは、
切削面がタイコ状になるため、特に小径(例えば、径3
〜10mmφ)のタイプでは、熟練者でなくとも手回し
や機械(ボール盤、旋盤又は中ぐり盤等)を使って使用
することができる。
The adjustable reamer of the present invention is
Since the cutting surface becomes a Tyco shape, especially small diameter (for example, diameter 3
In the type of 10 mmφ), even a person who is not an expert can use it by hand or by using a machine (drilling machine, lathe, boring machine, etc.).

【発明の効果】以上述べたごとく、本発明のアジャスタ
ブルリーマは、切削面の外径の寸法が調整自在であり、
かつ小さな径の下穴から大きな径の下穴にまで対応可能
という著大な効果を奏するものである。
As described above, in the adjustable reamer of the present invention, the outer diameter of the cutting surface is adjustable.
Moreover, it has a great effect that it can be applied to a prepared hole having a small diameter to a prepared hole having a large diameter.

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

【図1】 本発明のアジャスタブルリーマの一つの実施
の形態を示す分解斜視説明図である。
FIG. 1 is an exploded perspective view showing an embodiment of an adjustable reamer according to the present invention.

【図2】 本発明のアジャスタブルリーマの側面図であ
る。
FIG. 2 is a side view of the adjustable reamer of the present invention.

【図3】 図2の断面図である。3 is a cross-sectional view of FIG.

【図4】 切削面の外径の寸法を拡大した状態を示す横
断面図である。
FIG. 4 is a cross-sectional view showing a state in which the outer diameter of the cutting surface is enlarged.

【図5】 図3のV−V線拡大断面図である。5 is an enlarged sectional view taken along line VV of FIG.

【図6】 図4のVI−VI線拡大断面図である。6 is an enlarged sectional view taken along line VI-VI of FIG.

【符号の説明】[Explanation of symbols]

10:アジャスタブルリーマ、12:ネジ孔、14:テ
ーパ孔、16:貫通孔、18:切削面、20:中空円筒
部材、20a:後端部、20b:中央部、20c:先端
部、21:中央部円筒壁、22:調整ネジ棒、22a:
長尺押圧棒、22b:ネジ部、24:テーパピン、2
6:すり割り。
10: Adjustable reamer, 12: Screw hole, 14: Tapered hole, 16: Through hole, 18: Cutting surface, 20: Hollow cylindrical member, 20a: Rear end portion, 20b: Center portion, 20c: Tip portion, 21: Center Part cylindrical wall, 22: adjusting screw rod, 22a:
Long pressing rod, 22b: screw part, 24: taper pin, 2
6: Slotted.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】後端部にネジ孔、中央部にテーパ孔及び先
端部に貫通孔をそれぞれ設け、中央部円筒壁外周面を砥
粒を固着した切削面としてなる中空円筒部材と、前記ネ
ジ孔に後端方向から螺動自在に螺着される調整ネジ棒
と、前記テーパ孔に摺動自在に挿着されるテーパピン
と、からなるアジャスタブルリーマであって、前記中空
円筒部材の中央部円筒壁の長手方向に互いに平行する複
数のすり割りを設け、前記調整ネジ棒の螺動により、前
記テーパピンを摺動させることによって、前記切削面の
外径の寸法を微調整可能としたことを特徴とするアジャ
スタブルリーマ。
1. A hollow cylindrical member having a screw hole at the rear end, a taper hole at the center, and a through hole at the tip, and the outer peripheral surface of the central cylindrical wall serving as a cutting surface to which abrasive grains are fixed, and the screw. An adjustable reamer comprising an adjusting screw rod screwed into a hole so as to be screwed from a rear end direction, and a taper pin slidably inserted into the taper hole, wherein a central cylinder of the hollow cylindrical member. A plurality of slits that are parallel to each other in the longitudinal direction of the wall are provided, and the outer diameter of the cutting surface can be finely adjusted by sliding the taper pin by screwing the adjustment screw rod. Adjustable Reamer.
【請求項2】前記複数のすり割りが該中空円筒部材の半
径方向に等間隔に3又は4本設けられていることを特徴
とする請求項1記載のアジャスタブルリーマ。
2. The adjustable reamer according to claim 1, wherein the plurality of slits are provided at equal intervals in the radial direction of the hollow cylindrical member.
JP2001288821A 2001-09-21 2001-09-21 Adjustable reader Pending JP2003094243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001288821A JP2003094243A (en) 2001-09-21 2001-09-21 Adjustable reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001288821A JP2003094243A (en) 2001-09-21 2001-09-21 Adjustable reader

Publications (1)

Publication Number Publication Date
JP2003094243A true JP2003094243A (en) 2003-04-03

Family

ID=19111401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001288821A Pending JP2003094243A (en) 2001-09-21 2001-09-21 Adjustable reader

Country Status (1)

Country Link
JP (1) JP2003094243A (en)

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