JPH0852616A - Stepped reamer - Google Patents

Stepped reamer

Info

Publication number
JPH0852616A
JPH0852616A JP18613594A JP18613594A JPH0852616A JP H0852616 A JPH0852616 A JP H0852616A JP 18613594 A JP18613594 A JP 18613594A JP 18613594 A JP18613594 A JP 18613594A JP H0852616 A JPH0852616 A JP H0852616A
Authority
JP
Japan
Prior art keywords
blade
diameter
stepped
reamer
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.)
Granted
Application number
JP18613594A
Other languages
Japanese (ja)
Other versions
JP3587561B2 (en
Inventor
Toru Koike
徹 小池
Toshio Manabe
敏雄 真鍋
Hiroyuki Kusunoki
弘行 楠
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP18613594A priority Critical patent/JP3587561B2/en
Publication of JPH0852616A publication Critical patent/JPH0852616A/en
Application granted granted Critical
Publication of JP3587561B2 publication Critical patent/JP3587561B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PURPOSE:To provide a stepped reamer for finishing the inner surface of a stepped hole in which the working precision is improved, and the rigidity of the tool is enhanced. CONSTITUTION:Three chip discharging grooves 6 are formed on the outer circumferences of first-fourth edge parts 2-4 differed in diameter, and cutting edge tips 8-10 are provided on the top end ridge line part of a face 7 to radially provide differences in step. A support part is formed in a position differed in phase by 180 deg. around the shaft center to each cutting edge tip 8-10 to receive the cutting load. The diameter of the groove bottom of the chip discharging grooves 6 is changed according to the diameter of each blade part 2-4 to enhance the rigidity. Further, a bottom blade is provided on the front surface of the top cutting edge tip 8.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、段付穴の内面を仕上加
工する段付リーマにおいて、加工精度の向上を図り、工
具の剛性を高めるようにした段付リーマに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a step reamer that finishes the inner surface of a step hole and improves the processing accuracy and the rigidity of the tool.

【0002】[0002]

【従来の技術】従来、段付穴を同時にリーマ加工する段
付リーマとして、例えば工具正面図である図6に示すよ
うな3枚刃リーマ51が知られている。
2. Description of the Related Art Conventionally, for example, a three-blade reamer 51 as shown in FIG. 6 which is a front view of a tool is known as a step reamer for simultaneously reaming step holes.

【0003】つまり、このリーマ51の外周部には3箇
所の切屑排出溝52が設けられ、回転方向に対面する側
の壁面であるすくい面53と、回転方向と反対側の壁面
であるポケット面54とは夫々正面視で一直線になるよ
うに形成されるとともに、軸方向に沿って刃部径が4段
階に変化している。
That is, three chips discharging grooves 52 are provided on the outer peripheral portion of the reamer 51, and a rake surface 53 which is a wall surface facing the rotation direction and a pocket surface which is a wall surface opposite to the rotation direction. 54 is formed so as to be a straight line when viewed from the front, and the blade portion diameter is changed in four steps along the axial direction.

【0004】そして、刃具先端の最も径の小さい刃部に
は第1の切刃チップ55が、2番目に径の小さい刃部に
は第2の切刃チップ56が、3番目に径の小さい刃部に
は第3の切刃チップ57が、一番径の大きい基端側の刃
部には第4の切刃チップ58が夫々設けられ、これらは
軸心Pからほぼ放射方向に延びるすくい面53の先端陵
線部に半径方向に段差を持って配設されている。
The first cutting blade tip 55 is located at the blade portion having the smallest diameter at the tip of the cutting tool, and the second cutting blade tip 56 is located at the blade portion having the second smallest diameter. A third cutting edge tip 57 is provided on the blade portion, and a fourth cutting edge tip 58 is provided on the blade portion on the base end side having the largest diameter. These are rakes extending from the axis P substantially in the radial direction. It is arranged with a step in the radial direction at the front edge of the surface 53.

【0005】また、軸心を挟んで各切刃チップ55〜5
8の反対側には、加工穴の内面に摺接して切削負荷を受
ける第1〜第4のサポート部61〜64が形成され、こ
の第1〜第4のサポート部61〜64は、ポケット面5
4の先端陵線部に沿って半径方向に段差を持って配置さ
れている。
Further, the cutting blade tips 55 to 5 are arranged with the axis centered therebetween.
On the opposite side of 8, the first to fourth support portions 61 to 64 which are in sliding contact with the inner surface of the processed hole and receive the cutting load are formed. The first to fourth support portions 61 to 64 are pocket surfaces. 5
4 are arranged with a step in the radial direction along the front ridgeline of No. 4.

【0006】つまり、例えば偶数枚刃リーマでは、切刃
チップ同士を180度反対の位置に配置すれば切削負荷
を有効に支えることが出来るが、奇数枚刃の時は加工精
度の悪化を防止するため、切削負荷を受けるサポート部
を設ける必要がある。
That is, for example, in an even-edged blade reamer, the cutting load can be effectively supported by arranging the cutting blade tips at positions opposite to each other by 180 degrees, but in the case of an odd-numbered blade, deterioration of processing accuracy is prevented. Therefore, it is necessary to provide a support part that receives the cutting load.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、このよ
うに軸心Pを中心として放射状に設けられたすくい面5
3に対して、軸心Pを中心とする放射方向からずれたポ
ケット面54を直線状に形成すると、切屑排出溝52の
加工は容易なものの、刃部径に変化によってサポート部
62、63、64の位置が切刃チップ56、57、58
の180度反対の位置からずれ、サポート性が悪くなっ
て加工穴の同軸度が低下するという不具合があった。
However, the rake face 5 radially provided with the axis P as the center as described above is used.
When the pocket surface 54 deviating from the radial direction centering on the axis P with respect to 3 is formed linearly, the chip discharge groove 52 can be easily machined, but the support portions 62, 63, due to the change in the blade diameter, The position of 64 is the cutting edge tip 56, 57, 58
There was a problem in that the coaxiality of the machined hole was lowered due to the poor supportability due to the deviation from the opposite position of 180 degrees.

【0008】しかも、刃部径が大きくなるに連れてネジ
リ負荷が高まるのに対して、軸心附近の肉厚は変化しな
いため、工具の剛性確保に問題が生じていた。
Moreover, as the blade diameter increases, the torsional load increases, but the wall thickness near the shaft center does not change, which causes a problem in securing the rigidity of the tool.

【0009】また、図5のような鋳抜穴を有するバルブ
ボディWのリーマ加工の場合は予め下穴を成形しておく
必要があり、例えば貫通穴として加工すべき下穴をドリ
ル加工でなく鋳抜穴にしようとすると、鋳抜きピンの引
き抜き等の関係上バリ等の発生を防止することが望まし
く、このため貫通穴でなく盲穴の下穴にするのが好都合
であるが、従来のリーマ加工は径仕上のみで盲穴を貫通
させることが出来ないという問題があった。このため、
下穴を鋳抜穴で形成する場合には、鋳抜きピンで盲穴を
成形し、ドリル加工で貫通穴とした後にリーマ加工を行
うような複雑な工程を経る必要があった。
Further, in the case of reaming the valve body W having a casting hole as shown in FIG. 5, it is necessary to form the prepared hole in advance. For example, the prepared hole to be processed as a through hole is not drilled. It is desirable to prevent the occurrence of burrs and the like due to pulling out of the casting pin when making a casting hole. Therefore, it is convenient to use a blind hole pilot hole instead of a through hole. The reaming process has a problem that the blind hole cannot be penetrated only by the diameter finishing. For this reason,
When the prepared hole is formed by a cast hole, it is necessary to perform a complicated process of forming a blind hole with a cast pin, forming a through hole by drilling, and then performing reaming.

【0010】[0010]

【課題を解決するための手段】かかる課題を解決するた
め、本発明は複数の異径部が連なる刃部外周に奇数個の
切屑排出溝を形成し、これら切屑排出溝の一方側の壁面
の外周陵線部であって各異径部の軸方向先端に夫々の外
周切刃を設けるようにした段付リーマにおいて、異径部
の各外周切刃を軸方向に沿って同一線上に配置し、これ
ら各外周切刃に対して軸心を中心に180度位相が異な
る位置にサポート部を形成するようにした。
In order to solve such a problem, the present invention forms an odd number of chip discharge grooves on the outer periphery of a blade portion in which a plurality of different diameter parts are connected, and the wall surface of one side of these chip discharge grooves is formed. In a stepped reamer that is a peripheral ridge part and has a peripheral cutting edge at the axial tip of each different diameter part, arrange each outer peripheral cutting edge of the different diameter part on the same line along the axial direction. A support portion is formed at a position having a phase difference of 180 degrees with respect to each of the outer peripheral cutting edges around the axis.

【0011】また、切削排出溝の溝底の径を刃部の径に
合せて変化させるようにした。
Further, the diameter of the groove bottom of the cutting discharge groove is changed according to the diameter of the blade.

【0012】更に、段付リーマの先端面周縁部に、外周
切刃に連続する底刃を設けた。
Further, a bottom blade continuous with the outer peripheral cutting edge is provided on the peripheral portion of the tip surface of the stepped reamer.

【0013】[0013]

【作用】外周切刃に対して軸心を中心に180度位相が
異なる位置にサポート部を形成することで、サポート性
が良好になり同軸度が増す。
By forming the support portion at a position having a phase difference of 180 degrees from the axis of the outer peripheral cutting edge, the supportability is improved and the coaxiality is increased.

【0014】また、切削排出溝の溝底の径を刃部の径に
合せて変化させ、例えば刃部の径が大きくなった時に溝
底の径を大きくすれば工具の芯径が大きくなって剛性が
高まり、ネジリ負荷を有効に受けることが出来る。
Further, if the diameter of the groove bottom of the cutting discharge groove is changed in accordance with the diameter of the blade, and the diameter of the groove bottom is increased when the diameter of the blade is increased, the core diameter of the tool is increased. The rigidity is increased and the torsional load can be effectively received.

【0015】また、先端面周縁部に底刃を設ければ、下
穴が盲穴であっても一回のリーマ加工で貫通穴を仕上加
工することが出来る。
Further, if a bottom blade is provided at the peripheral portion of the tip surface, the through hole can be finished by one reaming even if the prepared hole is a blind hole.

【0016】[0016]

【実施例】本発明の段付リーマの実施例について添付し
た図面に基づき説明する。図1は本段付リーマの斜視
図、図2は同正面図、図3は同側面図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the step reamer of the present invention will be described with reference to the accompanying drawings. 1 is a perspective view of the stepped reamer, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof.

【0017】本発明の段付リーマは、例えば図5に示す
ようなAT車のメインバルブボディWにバルブ孔を形成
する際に使用され、このバルブボディWには予め大径と
小径の2段の段付下穴Hが形成されている。
The stepped reamer of the present invention is used, for example, when forming a valve hole in a main valve body W of an AT vehicle as shown in FIG. 5, and the valve body W has two steps of a large diameter and a small diameter in advance. The stepped prepared hole H is formed.

【0018】そして、本段付リーマ1は、先端側から基
端側に向けて順次径が大きくなる4段の異径部を備えて
おり、先端側の第1の刃部2が最も小さい径で、これに
段差を介して連なる第2の刃部3が2番目に小さい径で
あり、順次第3の刃部4、第4の刃部5と基端側に向け
て径が大きくなってゆく。
The stepped reamer 1 is provided with four steps of different diameter portions whose diameters gradually increase from the tip side to the base end side, and the first blade portion 2 on the tip side has the smallest diameter. Then, the second blade portion 3 connected to this via a step has the second smallest diameter, and the diameter increases in the order of the third blade portion 4, the fourth blade portion 5 and the base end side. go.

【0019】この段付リーマ1には、図1及び図2に示
すように、円周方向に3本の切屑排出溝6、‥が設けら
れている。
As shown in FIGS. 1 and 2, the stepped reamer 1 is provided with three chip discharge grooves 6, ... In the circumferential direction.

【0020】そして、この切屑排出溝6、‥の回転方向
に面する壁面に形成されるすくい面7、‥は、ほぼすく
い角0度の状態で軸心Pから放射方向に延び、また軸方
向には第1の刃部2から第4の刃部5まで同じ平面のす
くい面として形成され、径方向には各刃部2、3、4、
5間に段差が形成されている。
The rake face 7, formed on the wall surface of the chip discharge groove 6, which faces in the rotational direction, extends radially from the axis P in the state where the rake angle is substantially 0 °, and also in the axial direction. Is formed as a rake surface of the same plane from the first blade portion 2 to the fourth blade portion 5, and each blade portion 2, 3, 4,
A step is formed between the five.

【0021】そして、このすくい面7の外周陵線部であ
って、各刃部2、3、4、5の軸方向先端側にはチップ
取付凹部が形成され、このチップ取付凹部に外周切刃と
しての切刃チップ8、9、10、11が取付けられてい
る。尚、この切刃チップ8、9、10、11は例えばダ
イヤモンドチップである。
A tip mounting recess is formed at the tip of the blades 2, 3, 4, 5 in the outer peripheral edge of the rake face 7 in the axial direction. The cutting blade tips 8, 9, 10, 11 are attached. The cutting edge chips 8, 9, 10, 11 are diamond chips, for example.

【0022】また、切屑排出溝6、‥の反対側の壁面で
あるポケット面12a、12b、12c、12dは段差
を持って連なっており、このポケット面12a、12
b、12c、12dの陵線に丸みを持って形成される第
1のサポート部13、第2のサポート部14、第3のサ
ポート部15、第4のサポート部16を、軸心Pを中心
に各切刃チップ8、9、10、11から180度位相を
異ならした位置に設定している。
Further, pocket surfaces 12a, 12b, 12c, 12d, which are wall surfaces on the side opposite to the chip discharge groove 6, ... Are connected with a step, and the pocket surfaces 12a, 12 are formed.
The first support portion 13, the second support portion 14, the third support portion 15, and the fourth support portion 16 which are formed with roundness on the ridgelines of b, 12c, and 12d are centered on the axis P. The cutting blade tips 8, 9, 10 and 11 are set at 180 degrees out of phase with each other.

【0023】従って、第2のサポート部14、第3のサ
ポート部15、第4のサポート部16は、第1の刃部2
の切屑排出溝6のポケット面12aの平面上から僅かづ
つ切屑排出溝6の内側に張り出した状態になり、また、
各ポケット面12a、12b、12c、12dは、各刃
部2、3、4、5の径が大きくなるに連れて軸心側の肉
厚が厚くなる方向に僅かづつ傾斜させている。
Therefore, the second support portion 14, the third support portion 15, and the fourth support portion 16 are the same as the first blade portion 2.
The chip discharge groove 6 is slightly projected from the plane of the pocket surface 12a to the inside of the chip discharge groove 6, and
Each pocket surface 12a, 12b, 12c, 12d is slightly inclined in a direction in which the axial thickness increases as the diameter of each blade 2, 3, 4, 5 increases.

【0024】このため、図2に示すように、各刃部2、
3、4、5の径が大きくなる程、切屑排出溝6の溝底の
径(例えば第1の刃部2の溝底の径であればT2、第2
の刃部の溝底の径であればT3)は大きくなる。
Therefore, as shown in FIG. 2, each blade 2,
As the diameters of 3, 4, and 5 increase, the diameter of the groove bottom of the chip discharge groove 6 (for example, if the diameter of the groove bottom of the first blade portion 2 is T 2 , the second
If the diameter of the groove bottom of the blade portion is 3, T3) becomes large.

【0025】尚、段付リーマ1の軸心には、図3に示す
ような油路18が形成され、クーラントを流通させるこ
とが出来るようにしている。
An oil passage 18 as shown in FIG. 3 is formed in the axial center of the stepped reamer 1 so that the coolant can be circulated.

【0026】かかる段付リーマ1において、軸周りに回
転する各切刃チップ8、9、10、11が下穴内面を切
削しつつ加工送りされると、各サポート部13、14、
15、16は穴内面に摺接して切削負荷を受けるが、各
サポート部13、14、15、16は、各切刃チップ
8、9、10、11から180度位相が異なった位置に
設定されているため、すべての刃部2、3、4、5にお
けるサポート性は非常に良好である。
In the stepped reamer 1, when the cutting blade tips 8, 9, 10 and 11 which rotate around the axis are processed and fed while cutting the inner surface of the prepared hole, the support portions 13 and 14,
Although 15 and 16 are in sliding contact with the inner surface of the hole and receive a cutting load, the support parts 13, 14, 15 and 16 are set at positions 180 degrees out of phase with the respective cutting edge tips 8, 9, 10, and 11. Therefore, the supportability of all the blade portions 2, 3, 4, 5 is very good.

【0027】しかも、各刃部2、3、4、5の径が大き
くなる程工具が受けるネジリトルクは大きくなるが、切
屑排出溝6の溝底の径を大きくして軸心側の肉厚を厚く
するようにしているため、刃具の剛性を高めることが出
来、例えば撓み等による加工精度の低下を防止出来る。
Moreover, the larger the diameter of each blade 2, 3, 4, 5 is, the larger the torsional torque received by the tool is. However, the diameter of the chip bottom of the chip discharge groove 6 is increased to increase the wall thickness on the shaft center side. Since the blade is made thick, it is possible to increase the rigidity of the cutting tool and prevent a reduction in processing accuracy due to, for example, bending.

【0028】ところで、本段付リーマ1の第1の刃部2
の切刃チップ8は、図4に示すような底刃17を備えて
いる。
By the way, the first blade 2 of the stepped reamer 1
The cutting blade tip 8 has a bottom blade 17 as shown in FIG.

【0029】つまり、図5に示すようなバルブボディW
に段付下穴Hを形成する際、ドリル加工を行うことなく
鋳抜穴として形成しようとすると、鋳抜きピンの引き抜
き性を良くするため貫通穴としないで盲穴にして、バリ
等による抜き出し阻害要因を避けることが望ましい。
That is, the valve body W as shown in FIG.
When forming a stepped pilot hole H in a hole, if it is to be formed as a cast hole without drilling, it will be a blind hole instead of a through hole in order to improve the drawability of the cast pin, and it will be removed by burr etc. Avoiding obstructive factors is desirable.

【0030】そこで、段付下穴Hとして最先端部に薄い
膜状の未加工部分Mを残した盲穴状の鋳抜穴を形成し、
これをリーマ1先端面の底刃17によって同時に加工し
未加工部分Mを取り除くようにしたものである。
Therefore, a blind hole-shaped casting hole having a thin film-shaped unprocessed portion M left at the leading end is formed as the stepped prepared hole H,
This is processed by the bottom blade 17 on the tip surface of the reamer 1 at the same time to remove the unprocessed portion M.

【0031】また、以上のような切刃チップ8、9、1
0、11は、例えばワイヤカット法で加工する。
Further, the cutting blade tips 8, 9, 1 as described above
0 and 11 are processed by the wire cutting method, for example.

【0032】そして、このように段付下穴Hを鋳抜穴と
することで、ドリル加工の手間を省くことが出来、生産
効率が高まる。
By thus forming the stepped pilot hole H as a cast hole, the labor of drilling can be saved and the production efficiency can be improved.

【0033】また、本実施例では段付下穴Hを2段の異
径穴とし、リーマ1を段付下穴Hに挿入した際、第1の
刃部2の切刃チップ8を段付下穴Hの小径入口部分に当
接させて加工を開始し、その後、第4の刃部5の切刃チ
ップ11を大径入口部分に当接させて両持ち支持の状態
で加工することで、工具のあおられを防止し加工精度を
高めるようにしている。
Further, in this embodiment, the stepped pilot hole H has two different diameter holes, and when the reamer 1 is inserted into the stepped pilot hole H, the cutting blade tip 8 of the first blade portion 2 is stepped. By starting the machining by bringing it into contact with the small-diameter inlet portion of the prepared hole H, and then bringing the cutting-edge tip 11 of the fourth blade portion 5 into contact with the large-diameter inlet portion to perform machining in a double-supported state. , Prevent the tool from overwhelming and improve the processing accuracy.

【0034】そして、このような段付ドリル1を用いて
加工した結果、従来の段付リーマより同軸度が向上する
ことが実証された。
As a result of processing using such a step drill 1, it has been proved that the coaxiality is improved as compared with the conventional step reamer.

【0035】[0035]

【発明の効果】以上のように本発明の段付リーマは、す
べての外周切刃に対して軸心を中心に180度位相が異
なる位置に夫々のサポート部を形成するようにしたた
め、サポート性が良好になり同軸度を高めることが出来
る。また、切削排出溝の溝底の径を、例えば刃部の径が
大きくなった時に合せて大きくするようにすれば、工具
の芯径が大きくなって剛性が高まりネジリ負荷を有効に
受けることが出来る。また、先端面周縁部に底刃を設け
れば、下穴が盲穴であっても一回のリーマ加工で貫通穴
を仕上加工することが出来、例えばドリル加工等の工程
を省略出来る。
As described above, in the stepped reamer of the present invention, since the support portions are formed at the positions where the phases are different by 180 degrees with respect to the axial center with respect to all the outer peripheral cutting edges, the supportability is improved. Is improved and the coaxiality can be increased. In addition, if the diameter of the groove bottom of the cutting discharge groove is increased, for example, when the diameter of the blade is increased, the core diameter of the tool is increased, the rigidity is increased, and the torsional load can be effectively received. I can. Further, if a bottom blade is provided on the peripheral portion of the tip surface, the through hole can be finished by one reaming even if the prepared hole is a blind hole, and a process such as drilling can be omitted.

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

【図1】本段付リーマの斜視図FIG. 1 is a perspective view of a stepped reamer.

【図2】同正面図FIG. 2 is a front view of the same.

【図3】同側面図FIG. 3 is a side view of the same.

【図4】第1の刃部の切刃チップに形成した底刃の拡大
FIG. 4 is an enlarged view of a bottom blade formed on the cutting blade tip of the first blade portion.

【図5】加工状態を示す説明図FIG. 5 is an explanatory diagram showing a processed state

【図6】従来の段付リーマの正面図FIG. 6 is a front view of a conventional step reamer.

【符号の説明】[Explanation of symbols]

1 段付リーマ 2 第1の刃部 3 第2の刃部 4 第3の刃部 5 第4の刃部 6 切屑排出溝 8、9、10、11 切刃チップ 13 第1のサポート部 14 第2のサポート部 15 第3のサポート部 16 第4のサポート部 17 底刃 T2 第1の刃部の溝底の径 T3 第2の刃部の溝底の径 P 軸心1 Stepped reamer 2 1st blade part 3 2nd blade part 4 3rd blade part 5 4th blade part 6 Chip discharge groove 8, 9, 10, 11 Cutting blade tip 13 1st support part 14th 2 support part 15 3rd support part 16 4th support part 17 Bottom blade T 2 Diameter of groove bottom of 1st blade part T 3 Diameter of groove bottom of 2nd blade part P Axial center

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 複数の異径部が連なる刃部外周に奇数個
の切屑排出溝を形成し、これら切屑排出溝の一方側の壁
面の外周陵線部であって各異径部の軸方向先端に夫々の
外周切刃を設けるようにした段付リーマにおいて、前記
異径部の各外周切刃を軸方向に沿って同一線上に配置
し、これら各外周切刃に対して軸心を中心に180度位
相が異なる位置にサポート部を形成するようにしたを特
徴とする段付リーマ。
1. An odd number of chip discharge grooves are formed on the outer periphery of a blade portion in which a plurality of different diameter parts are connected, and the peripheral edge line part of one wall surface of these chip discharge grooves is the axial direction of each different diameter part. In a stepped reamer that is provided with respective outer peripheral cutting edges, the outer peripheral cutting edges of the different diameter portion are arranged on the same line along the axial direction, and the axial center is centered with respect to each of these outer peripheral cutting edges. A stepped reamer characterized in that a support portion is formed at a position where the phase is different by 180 degrees.
【請求項2】 前記切削排出溝の溝底の径を刃部の径に
合せて変化させることを特徴とする請求項1に記載の段
付リーマ。
2. The stepped reamer according to claim 1, wherein the diameter of the groove bottom of the cutting discharge groove is changed according to the diameter of the blade portion.
【請求項3】 前記段付リーマの先端面周縁部に、外周
切刃に連続する底刃を設けたことを特徴とする請求項1
又は請求項2に記載の段付リーマ。
3. A bottom blade continuous with an outer peripheral cutting edge is provided on a peripheral edge portion of a front end surface of the stepped reamer.
Alternatively, the stepped reamer according to claim 2.
JP18613594A 1994-08-08 1994-08-08 Stepped reamer Expired - Fee Related JP3587561B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18613594A JP3587561B2 (en) 1994-08-08 1994-08-08 Stepped reamer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18613594A JP3587561B2 (en) 1994-08-08 1994-08-08 Stepped reamer

Publications (2)

Publication Number Publication Date
JPH0852616A true JPH0852616A (en) 1996-02-27
JP3587561B2 JP3587561B2 (en) 2004-11-10

Family

ID=16182992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18613594A Expired - Fee Related JP3587561B2 (en) 1994-08-08 1994-08-08 Stepped reamer

Country Status (1)

Country Link
JP (1) JP3587561B2 (en)

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KR100427339B1 (en) * 2001-10-08 2004-04-14 현대자동차주식회사 Reamer for complex working
JP2007130737A (en) * 2005-11-14 2007-05-31 Honda Motor Co Ltd Reamer, drill and machining method
JP2013013983A (en) * 2011-07-06 2013-01-24 Honda Motor Co Ltd Cutting tool
WO2015001838A1 (en) * 2013-07-05 2015-01-08 トヨタ自動車株式会社 Boring tool and boring method using same
JP2015037815A (en) * 2013-03-28 2015-02-26 株式会社マラソンツールズ Two-pad three-cutting blade plural stage gun reamer
CN104493272A (en) * 2014-09-26 2015-04-08 上海奥林汽车安全系统有限公司 Molding cutter bar for processing door hinge vehicle body part arc
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
JP2016032863A (en) * 2014-07-29 2016-03-10 株式会社アライドマテリアル Rotary cutting tool and method of manufacturing workpiece
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
US20170259350A1 (en) * 2013-06-14 2017-09-14 Irwin Industrial Tool Company Step drill
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KR100427339B1 (en) * 2001-10-08 2004-04-14 현대자동차주식회사 Reamer for complex working
JP2007130737A (en) * 2005-11-14 2007-05-31 Honda Motor Co Ltd Reamer, drill and machining method
JP4580325B2 (en) * 2005-11-14 2010-11-10 本田技研工業株式会社 Reamer, drill and processing method
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
US10160049B2 (en) 2010-01-07 2018-12-25 Black & Decker Inc. Power tool having rotary input control
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
JP2013013983A (en) * 2011-07-06 2013-01-24 Honda Motor Co Ltd Cutting tool
JP2015037815A (en) * 2013-03-28 2015-02-26 株式会社マラソンツールズ Two-pad three-cutting blade plural stage gun reamer
US20170259350A1 (en) * 2013-06-14 2017-09-14 Irwin Industrial Tool Company Step drill
US10328499B2 (en) * 2013-06-14 2019-06-25 Black & Decker Inc. Step drill
US20160368063A1 (en) * 2013-07-05 2016-12-22 Toyota Jidosha Kabushiki Kaisha Boring tool and boring method using same
JP2015013348A (en) * 2013-07-05 2015-01-22 トヨタ自動車株式会社 Boring processing tool and boring processing method using the same
WO2015001838A1 (en) * 2013-07-05 2015-01-08 トヨタ自動車株式会社 Boring tool and boring method using same
JP2016032863A (en) * 2014-07-29 2016-03-10 株式会社アライドマテリアル Rotary cutting tool and method of manufacturing workpiece
CN104493272A (en) * 2014-09-26 2015-04-08 上海奥林汽车安全系统有限公司 Molding cutter bar for processing door hinge vehicle body part arc
CN115319196A (en) * 2022-10-17 2022-11-11 吴江市亨达机械配件有限责任公司 Reaming control method and device

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