JP2002273620A - Reamer - Google Patents

Reamer

Info

Publication number
JP2002273620A
JP2002273620A JP2001074628A JP2001074628A JP2002273620A JP 2002273620 A JP2002273620 A JP 2002273620A JP 2001074628 A JP2001074628 A JP 2001074628A JP 2001074628 A JP2001074628 A JP 2001074628A JP 2002273620 A JP2002273620 A JP 2002273620A
Authority
JP
Japan
Prior art keywords
reamer
oil reservoir
cutting oil
oil
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
JP2001074628A
Other languages
Japanese (ja)
Other versions
JP4539899B2 (en
Inventor
Maki Shimoide
真樹 下出
Norihiro Takehara
宣博 竹原
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP2001074628A priority Critical patent/JP4539899B2/en
Publication of JP2002273620A publication Critical patent/JP2002273620A/en
Application granted granted Critical
Publication of JP4539899B2 publication Critical patent/JP4539899B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Auxiliary Devices For Machine Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a reamer able to stably and precisely use for hole finishing work etc., for a long period of time. SOLUTION: This reamer is furnished with a reamer main body 1 having a plurality number of grooves 4 for chip recesses extending in the reamer shaft center L direction on a head end part and an abrasive grain part 2 constituted with abrasive grains attached between the adjacent grooves 4, 4 for the chip recesses of this reamer main body 1. A cutting oil supply hole 5 to supply cutting oil to the grooves 4 for the chip recesses is provided on the reamer main body 1. An oil reservoir recessed part 8 is provided on the abrasive grain part 2. The oil reservoir recessed part 8 and the cutting oil supply hole 5 are connected to each other through a communicating hole 9, and the cutting oil is ejected from this oil reservoir recessed part 8 and the chips are pushed out to the grooves 4 for the chip recesses.

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】この発明は、孔の仕上げ加工
等に使用されるリーマ、特に電着リーマに関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reamer used for finishing holes and the like, and more particularly to an electrodeposition reamer.

【0002】[0002]

【従来の技術】孔の仕上げ加工等に使用されるリーマ
は、図9〜図11に示すように、リーマ本体40の先端
膨出部41に、周方向に沿って所定ピッチ、例えば、図
例のように約90°ピッチに、リーマ軸心方向に延びる
切屑逃し用溝42を形成し、この切屑逃し用溝42間に
砥粒44を付着(電着)させて砥粒部43を形成し、さ
らにリーマ本体40に、先端がリーマ本体40の先端面
に開口しない盲状の軸心孔45を設けると共に、この軸
心孔45と切屑逃し用溝42とを連結する連結孔46を
設けていた。
2. Description of the Related Art As shown in FIGS. 9 to 11, a reamer used for finishing a hole or the like has a predetermined pitch along a circumferential direction at a tip bulging portion 41 of a reamer main body 40, for example, as shown in FIG. A chip escape groove 42 extending in the direction of the reamer axis is formed at a pitch of about 90 ° as described above, and an abrasive 44 is attached (electrodeposited) between the chip escape grooves 42 to form an abrasive part 43. Further, the reamer main body 40 is provided with a blind shaft hole 45 whose tip does not open to the front end surface of the reamer body 40, and a connection hole 46 for connecting the shaft hole 45 and the chip escape groove 42 is provided. Was.

【0003】そして、切削中においては、軸心孔45に
その基端部から図示省略に切削油供給装置から切削油を
供給して、連結孔46を介して切屑逃し用溝42に切削
油を送り込むようにしていた。これによって、切削作業
を円滑に行うと共に、発生する切屑を上記切屑逃し用溝
42から切削油とともに外部へ排出させていた。
During cutting, cutting oil is supplied to the shaft hole 45 from a base end thereof from a cutting oil supply device (not shown), and the cutting oil is supplied to the chip escape groove 42 through the connection hole 46. I was trying to send it. Thus, the cutting operation is performed smoothly, and the generated chips are discharged to the outside together with the cutting oil from the chip escape groove 42.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、切屑
が、砥粒部と、加工用の孔の内周面との間から切屑逃し
用溝42へ押出されない場合があり、押出されなけれ
ば、砥粒部43に切屑が密着して加工精度が低下する
(例えば、製品の孔径、面荒さに悪影響を与える)おそ
れがあった。そのため、毎加工時にリーマを他のリーマ
と交換したり、砥粒部43からの切屑除去作業を行った
りする必要があり、作業能率が悪いものであった。ま
た、切屑が密着することによって、この種のリーマとし
ての寿命が短くなり、コスト高となっていた。
However, there is a case where the chips are not extruded into the chip escape groove 42 from between the abrasive portion and the inner peripheral surface of the processing hole. There is a possibility that the chips will adhere to the portion 43 and the processing accuracy will be reduced (for example, the hole diameter and surface roughness of the product will be adversely affected). For this reason, it is necessary to replace the reamer with another reamer at each machining or to carry out a work of removing chips from the abrasive part 43, resulting in poor work efficiency. In addition, due to the close contact of the chips, the life as a reamer of this type is shortened, and the cost is increased.

【0005】この発明は、上記従来の欠点を解決するた
めになされたものであって、その目的は、長期にわたっ
て安定して精度よく孔の仕上げ加工等に使用することが
可能なリーマを提供することにある。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and has as its object to provide a reamer which can be used stably and accurately for finishing holes for a long period of time. It is in.

【0006】[0006]

【課題を解決するための手段及び効果】そこで請求項1
のリーマは、先端部にリーマ軸心L方向に延びる複数本
の切屑逃げ用溝4を有するリーマ本体1と、このリーマ
本体1の隣合う切屑逃げ用溝4、4間に砥粒が付設され
てなる砥粒部2・・とを備え、上記リーマ本体1に、上
記切屑逃げ用溝4に切削油を供給するための切削油供給
孔5を設けたリーマであって、上記砥粒部2に油溜め凹
部8を設けると共に、上記油溜め凹部8と切削油供給孔
5とを連通孔9にて連結して、切削油をこの油溜め凹部
8から噴出させて切屑を切屑逃げ用溝4へ押出すことを
特徴としている。
Means and Effects for Solving the Problems Claim 1
The reamer has a reamer main body 1 having a plurality of chip escape grooves 4 extending in the direction of the reamer axis L at a tip end thereof, and abrasive grains are provided between adjacent chip escape grooves 4 of the reamer body 1. A reamer provided with a cutting oil supply hole 5 for supplying cutting oil to the chip escape groove 4 in the reamer main body 1. The oil reservoir concave portion 8 is provided in the oil reservoir, and the oil reservoir concave portion 8 and the cutting oil supply hole 5 are connected to each other through a communication hole 9 so that the cutting oil is ejected from the oil reservoir concave portion 8 so that the chips can escape. It is characterized by being extruded.

【0007】上記請求項1のリーマでは、砥粒部2に油
溜め凹部8が設けられるので、切削油供給孔5からの切
削油が油溜め凹部8から噴出され、これによって、発生
する切屑が切屑逃げ用溝4へ押出される。そして、切屑
逃げ用溝4に入った切屑はこの切屑逃げ用溝4内の切削
油によって外部へ排出される。すなわち、油溜め凹部8
からの油の流出により、砥粒部2が洗い流されることに
なって、砥粒部2に切屑が密着(付着)しにくいものと
なる。これによって、長期にわたって精度よく仕上げ加
工を行うことができ、高品質(主に面荒さと加工径品
質)の製品を提供することが可能となる。また、長期に
わたって、他のリーマと交換する必要がなくなるので、
生産性の向上及びコストの低減を図ることができると共
に、自動化の促進に寄与する。
In the reamer of the first aspect, since the oil reservoir concave portion 8 is provided in the abrasive grain portion 2, the cutting oil from the cutting oil supply hole 5 is jetted out of the oil reservoir concave portion 8, thereby causing the generated chips. It is extruded into the chip escape groove 4. The chips entering the chip escape groove 4 are discharged to the outside by the cutting oil in the chip escape groove 4. That is, the oil reservoir recess 8
As a result, the abrasive particles 2 are washed away, and the chips hardly adhere to (adhere to) the abrasive particles 2. This makes it possible to perform finishing with high accuracy over a long period of time, and to provide a high-quality (mainly surface roughness and processing diameter quality) product. Also, since there is no need to exchange for another reamer for a long time,
It is possible to improve productivity and reduce costs, and contribute to promotion of automation.

【0008】さらに、上記請求項1のリーマでは、油溜
め凹部8を有することによって、連通孔9の開口部と切
削面(仕上げ加工する孔の内周面)との間に空間が形成
されることになる。これによって、連通孔9からの切削
油がこの空間へ流入し、さらに切屑逃げ用溝4へ流れ込
むことになって、切屑の除去を確実に行える。これに対
して、油溜め凹部8を形成することなく連通孔9の開口
部を砥粒部2に直接開口させれば、この開口部が切削面
と密接状となって、この連通孔9から切削油が流出し難
いものとなり、切屑を切屑逃げ用溝4へ押出すことが困
難となる。
Further, in the reamer of the first aspect, the presence of the oil reservoir recess 8 forms a space between the opening of the communication hole 9 and the cutting surface (the inner peripheral surface of the hole to be finished). Will be. As a result, the cutting oil from the communication hole 9 flows into this space, and further flows into the chip escape groove 4, whereby the chips can be reliably removed. On the other hand, if the opening of the communication hole 9 is directly opened to the abrasive grain portion 2 without forming the oil reservoir recess 8, the opening becomes in close contact with the cutting surface, and It becomes difficult for the cutting oil to flow out, and it becomes difficult to push chips into the chip escape groove 4.

【0009】請求項2のリーマは、上記油溜め凹部8が
リーマ軸心L方向に延びる長凹溝であることを特徴とし
ている。
According to a second aspect of the present invention, the oil reservoir recess 8 is a long groove extending in the direction of the reamer axis L.

【0010】上記請求項2のリーマでは、上記油溜め凹
部8がリーマ軸心L方向に延びる凹長溝であるので、切
削油が広範囲にわたって油溜め凹部8から流出(噴出)
することになり、砥粒部2への切屑の密着を有効に防止
することができる。
In the reamer of the second aspect, since the oil reservoir recess 8 is a concave elongated groove extending in the direction of the reamer axis L, the cutting oil flows out (spouts) from the oil reservoir recess 8 over a wide range.
Therefore, it is possible to effectively prevent chips from adhering to the abrasive grains 2.

【0011】請求項3のリーマは、上記油溜め凹部8の
長手方向端部と砥粒部2のリーマ軸心方向端縁との間に
砥粒残部10、10が形成されていることを特徴してい
る。
The reamer according to a third aspect of the present invention is characterized in that the remaining abrasive grains 10 and 10 are formed between the longitudinal end of the oil reservoir recess 8 and the edge of the abrasive grain section 2 in the axial direction of the reamer. are doing.

【0012】上記請求項3のリーマでは、油溜め凹部8
と切削面とで形成される空間が密封状の中空室となり、
切削油がこの中空室から放射状に噴射され、砥粒部2全
体の切屑の密着を有効に防止することができる。また、
砥粒残部10においても切削面を切削することができる
利点もある。
In the reamer of the third aspect, the oil reservoir recess 8 is provided.
And the space formed by the cutting surface becomes a sealed hollow chamber,
The cutting oil is radiated from the hollow chamber in a radial manner, so that close contact of chips on the entire abrasive grain portion 2 can be effectively prevented. Also,
There is also an advantage that the cutting surface can be cut even in the remaining abrasive grains 10.

【0013】[0013]

【発明の実施の形態】次に、この発明のリーマの具体的
な実施の形態について、図面を参照しつつ詳細に説明す
る。図1〜図3はリーマの一実施の形態を示し、図1は
側面図であり、図2は要部正面図であり、図3は要部断
面図である。リーマは、リーマ本体1と、このリーマ本
体1の先端部に設けられる砥粒部2・・とを備え、複数
の砥粒部2・・をもって、切削部Sを構成する。
Next, a specific embodiment of a reamer of the present invention will be described in detail with reference to the drawings. 1 to 3 show an embodiment of a reamer, FIG. 1 is a side view, FIG. 2 is a front view of a main part, and FIG. 3 is a sectional view of a main part. The reamer includes a reamer main body 1 and abrasive grains 2 provided at a tip end of the reamer main body 1. A plurality of abrasive grains 2... Constitute a cutting section S.

【0014】すなわち、リーマ本体1の先端部に膨出部
3が形成され、この膨出部3に周方向に沿って所定ピッ
チ、図例では約90°ピッチで断面形状が円弧状とされ
てリーマ軸心L方向に延びる複数本の切屑逃げ用溝4・
・を形成し、さらに、膨出部3の外面に、つまり、隣合
う切屑逃げ用溝4、4間に、砥粒部2を形成する砥粒を
付着させている。この場合、切屑逃げ用溝4は、その幅
寸法W1が砥粒部2の幅寸法W2と略同一となるように設
定される。つまり、図1に示すように、横断面におい
て、切屑逃げ用溝4と砥粒部2とは、それぞれ中心角度
α、βが約45°に設定され、また、切屑逃げ用溝4の
リーマ軸心L方向に対する傾斜角度θが、約10°に設
定されている。なお、切屑逃げ用溝4が上記のように傾
斜していれば、これにともなって砥粒部2も同様に所定
角度で傾斜することになる。
That is, a bulging portion 3 is formed at the tip of the reamer main body 1, and the bulging portion 3 has an arc-shaped cross section at a predetermined pitch in the circumferential direction at a pitch of about 90 ° in the illustrated example. A plurality of chip escape grooves 4 extending in the reamer axis L direction.
Are formed, and the abrasive grains forming the abrasive grain portion 2 are attached to the outer surface of the bulging portion 3, that is, between the adjacent chip escape grooves 4, 4. In this case, chip relief groove 4 has a width dimension W 1 is set to be substantially equal to the width W 2 of the abrasive section 2. That is, as shown in FIG. 1, in the cross section, the chip escape grooves 4 and the abrasive grains 2 have center angles α and β set to about 45 °, respectively, and the reaming axis of the chip escape grooves 4 The inclination angle θ with respect to the center L direction is set to about 10 °. If the chip escape grooves 4 are inclined as described above, the abrasive grains 2 are also inclined at a predetermined angle accordingly.

【0015】また、砥粒部2は、例えば、ダイヤモンド
やCBN等の超硬質の砥粒を電着することによって形成
され、その肉厚としては、数ミクロン乃至数十ミクロン
とされる。なお、上記の中心角度α、βや傾斜角度θ、
砥粒部2の肉厚等の数値は一例であり、もちろんこれに
限るものではない。
The abrasive grains 2 are formed by electrodeposition of ultra-hard abrasive grains, such as diamond or CBN, and have a thickness of several microns to several tens of microns. Note that the center angles α and β and the inclination angles θ and
Numerical values such as the thickness of the abrasive grains 2 are merely examples, and are not limited thereto.

【0016】ところで、リーマ本体1には、図3に示す
ように、先端がリーマ本体1の先端面1aに開口しない
盲状の切削油供給孔5が設けられ、膨出部3にこの切削
油供給孔5と各切屑逃げ用4・・と連通する連通孔6・
・が設けられている。すなわち、各連通孔6・・は軸心
が先端に向かって順次径方向外方へ拡開するように傾斜
し、この傾斜角度θ1としては50°〜60°位に設定
されている。
As shown in FIG. 3, the reamer main body 1 is provided with a blind cutting oil supply hole 5 whose front end does not open to the front end surface 1a of the reamer main body 1. A communication hole 6 communicating with the supply hole 5 and each chip escape 4.
・ Is provided. In other words, communication hole 6 ... are inclined to the axis is expanded towards sequentially radially outwardly toward the tip, it is set to 50 ° to 60 ° position as the inclination angle theta 1.

【0017】そして、この切削油供給孔5の基端部に、
図示省略の切削油供給装置が接続され、この切削油供給
装置から切削油供給孔5に例えば約20気圧の圧力でも
って切削油が供給される。従って、切削油供給孔5に供
給された切削油は、各連通孔6・・を介して各切屑逃げ
用溝4・・へ送出されることになる。なお、切削油とし
ては、切削する材質によって相違するが、鋼に対して極
圧油、アルミニウムには白灯油、軽油あるいはそれに油
性材を添加したもの、銅には水溶性切削油、軽油等を使
用することができる。
At the base end of the cutting oil supply hole 5,
A cutting oil supply device (not shown) is connected, and the cutting oil is supplied from the cutting oil supply device to the cutting oil supply hole 5 at a pressure of, for example, about 20 atm. Therefore, the cutting oil supplied to the cutting oil supply hole 5 is sent out to each chip escape groove 4 through each communication hole 6. The cutting oil varies depending on the material to be cut, but extreme pressure oil for steel, white kerosene or light oil for aluminum or an oily material added to aluminum, and water-soluble cutting oil or light oil for copper are used for copper. Can be used.

【0018】また、上記砥粒部2に断面矩形状の油溜め
凹部8が設けられ、この油溜め凹部8と上記切削油供給
孔5とを連通する連通孔9・・が設けられている。すな
わち、リーマ本体1の膨出部3に、隣合う切屑逃げ用溝
4、4間に凹溝7を設け、この凹溝7の内面に砥粒を電
着しないように構成している。このため、この凹溝7
と、砥粒部2の切欠部2aとでもって油溜め凹部8が形
成される。また、リーマを製造する場合、リーマ本体1
はその表面に例えばニッケルメッキ層等の被覆層が形成
されるものであり、油溜め凹部形成部位に被覆層及び砥
粒層を形成しないように構成して油溜め凹部8を形成し
てもよい。なお、油溜め凹部8の深さ寸法としては、例
えば、0.5mm程度とされる。
Further, an oil reservoir recess 8 having a rectangular cross section is provided in the abrasive grain portion 2, and communication holes 9 communicating the oil reservoir recess 8 with the cutting oil supply hole 5 are provided. That is, a concave groove 7 is provided in the bulging portion 3 of the reamer main body 1 between the adjacent chip escape grooves 4, 4, and the abrasive is not electrodeposited on the inner surface of the concave groove 7. Therefore, this groove 7
Then, the oil reservoir concave portion 8 is formed by the notch portion 2a of the abrasive grain portion 2. When manufacturing a reamer, the reamer body 1
Is formed with a coating layer such as a nickel plating layer on the surface thereof, and the oil reservoir concave portion 8 may be formed so that the coating layer and the abrasive layer are not formed at the oil reservoir concave portion forming portion. . The depth dimension of the oil reservoir recess 8 is, for example, about 0.5 mm.

【0019】また、この油溜め凹部8のリーマ軸心Lに
対する傾斜角度θ3は上記傾斜角度θと略同一に設定さ
れ、切屑逃げ用溝4と略平行に配設されている。しかも
油溜め凹部8の両長手方向端部が、砥粒部2の軸心方向
端縁に達しないように設定され、油溜め凹部8の端部と
砥粒部2の軸方向端縁との間に砥粒残部10、10(図
2参照)が形成される。また、連通孔9・・は、上記連
通孔6と同様図3に示すように、その軸心がリーマ軸心
Lに対して上記傾斜角度θ1と略同一の傾斜角度θ2で傾
斜している。なお、油溜め凹部8の幅寸法W3として
は、切削面を切削することができる砥粒部2を形成で
き、しかも油溜めとして機能する範囲で変更可能であ
る。また、各連通孔6、9の孔径(直径)は例えば1m
m〜1.5mm位に設定される。
The inclination angle θ 3 of the oil reservoir recess 8 with respect to the reamer axis L is set to be substantially the same as the above inclination angle θ, and is disposed substantially parallel to the chip escape groove 4. Moreover, both longitudinal ends of the oil reservoir recess 8 are set so as not to reach the axial center edge of the abrasive grain portion 2, and between the end of the oil reservoir concave portion 8 and the axial edge of the abrasive grain portion 2. The remaining abrasive grains 10, 10 (see FIG. 2) are formed between them. Further, the communication hole 9 ..., as shown in the same manner Figure 3 as the communicating hole 6, the axis is inclined at the inclination angle theta 1 and substantially the same inclination angle theta 2 with respect to the reamer axis L I have. As the width W 3 of the sump recess 8, it can form an abrasive section 2 which can be cut a cutting surface, yet can be modified within the scope which functions as an oil reservoir. The diameter (diameter) of each of the communication holes 6 and 9 is, for example, 1 m.
It is set to about m to 1.5 mm.

【0020】次に、上記のように構成されたリーマを使
用して孔の仕上げ加工を行う方法を説明する。まず、図
示省略のシャンク(リーマ本体1の基端部)を図示省略
の回転駆動装置に装着すると共に、切削油供給孔5に図
示省略の切削油供給装置を接続する。この状態で、回転
駆動装置と切削油供給装置とを駆動して、切削油を切削
油供給孔5に供給しつつこのリーマをその軸心L廻りに
回転させ、仕上げ加工する孔に、このリーマの切削部S
を挿入する。これによって、各砥粒部2・・が孔の内周
面を切削して、この孔の内周面が仕上げられる。この
際、切屑が発生するが、各切屑逃げ用溝4・・に入った
切屑は、各連通孔6・・から流出している切削油ととも
に外部へ排出される。
Next, a method for finishing a hole using the reamer configured as described above will be described. First, a shank (not shown) (a base end of the reamer main body 1) is mounted on a rotation driving device (not shown), and a cutting oil supply device (not shown) is connected to the cutting oil supply hole 5. In this state, the rotary drive device and the cutting oil supply device are driven to supply the cutting oil to the cutting oil supply hole 5 and rotate the reamer around its axis L so that the reamer is finished. Cutting part S
Insert Thus, each of the abrasive parts 2... Cuts the inner peripheral surface of the hole and finishes the inner peripheral surface of the hole. At this time, chips are generated, but chips entering each chip escape groove 4 are discharged to the outside together with the cutting oil flowing out from each communication hole 6.

【0021】また、切削油供給孔5からは、連通孔9に
も切削油が供給される。この場合、油溜め凹部8を有す
ることによって、連通孔9の開口部と切削面(仕上げ加
工する孔の内周面)との間に空間が形成されることにな
る。このため、連通孔9からの切削油が油溜め凹部8に
流入し、この油溜め凹部8から切屑逃げ用溝4に向かっ
て図1の矢印のように切削油が流出(噴出)することに
なる。従って、砥粒部2と孔の内周面との間の切屑は、
油溜め凹部8から噴出する切削油によって、切屑逃げ用
溝4へ押出されることになる。これによって、砥粒部2
に対する切屑の密着を防止することができ、長期にわた
って精度よく仕上げ加工を行うことが可能である。とこ
ろで、切屑が密着すれば、他のリーマと交換したり、切
屑の除去作業を行ったりする必要があり、作業性に劣る
ことになるが、この発明のリーマを使用すれば、上記の
ように、切屑が密着し難いものであるので、作業性に優
れ、多数の仕上げ加工を短時間で行うことができる。ま
た、長期にわたって、他のリーマと交換する必要がない
ので、自動化の促進に寄与する。
From the cutting oil supply hole 5, cutting oil is also supplied to the communication hole 9. In this case, the presence of the oil reservoir recess 8 forms a space between the opening of the communication hole 9 and the cutting surface (the inner peripheral surface of the hole to be finished). For this reason, the cutting oil from the communication hole 9 flows into the oil sump recess 8, and the cutting oil flows out (spouts) from the oil sump recess 8 toward the chip escape groove 4 as shown by an arrow in FIG. 1. Become. Therefore, the chips between the abrasive part 2 and the inner peripheral surface of the hole are:
The cutting oil ejected from the oil reservoir recess 8 is pushed into the chip escape groove 4. Thereby, the abrasive part 2
This makes it possible to prevent chips from adhering to the surface, and to perform finishing with high accuracy over a long period of time. By the way, if the chips adhere, it is necessary to replace them with another reamer, or to remove the chips, and the workability is inferior, but if the reamer of the present invention is used, as described above, Since the chips are hardly adhered to each other, the workability is excellent and a large number of finishing processes can be performed in a short time. Further, it is not necessary to exchange the reamer with another reamer for a long time, which contributes to promotion of automation.

【0022】また、上記実施の形態では、油溜め凹部8
が膨出部3の全長にわたって形成されず、長手方向端部
側に砥粒残部10、10が形成され、切削面と油溜め凹
部8にて形成される上記空間が密封状の中空室となる。
そのため、この中空室から放射状に切削油が流出するこ
とになって、砥粒部2からの切屑の押出を確実に行うこ
とができる。しかしながら、図2の仮想線で示すよう
に、砥粒残部10、10を有さないもの、つまり、油溜
め凹部8の長手方向端部がその長手方向に開口している
ものであってもよい。この場合、長手方向開口部から切
削油が流出するが、すべてがこの長手方向開口部から流
出するわけではなく、隣合う切屑逃げ用溝4へも流出し
て、切屑を切屑逃げ用溝4へ押出すことが可能であるか
らである。
In the above embodiment, the oil reservoir recess 8 is used.
Is not formed over the entire length of the bulging portion 3, the remaining abrasive particles 10, 10 are formed on the longitudinal end side, and the above-mentioned space formed by the cutting surface and the oil reservoir concave portion 8 becomes a sealed hollow chamber. .
Therefore, the cutting oil flows out radially from the hollow chamber, and the chips can be reliably pushed out from the abrasive grains 2. However, as shown by the imaginary line in FIG. 2, one having no abrasive grain remaining portions 10, that is, one having the longitudinal end of the oil reservoir recess 8 opened in the longitudinal direction may be used. . In this case, the cutting oil flows out from the longitudinal opening, but not all flows out from the longitudinal opening, but also flows out to the adjacent chip escape groove 4 and the chip is discharged to the chip escape groove 4. This is because they can be extruded.

【0023】次に、図4〜図6は他の実施の形態を示
し、この場合、6本の切屑逃げ用溝4・・が周方向に沿
って約60°ピッチで配設され、切屑逃げ用溝4及び油
溜め凹部8に連通孔6、9がそれぞれ3個設けられてい
る。また、切屑逃げ用溝4のねじれ角、つまり、リーマ
軸心L方向と切屑逃げ用溝4とが成す角度θが、約15
°に設定されている。さらに、連通孔6のリーマ軸心L
方向に対する角度θ1が約30°に設定され、先端の連
通孔9のリーマ軸心L方向に対する角度θ2が約60°
に設定され、他の2個連通孔9、9のリーマ軸心L方向
に対する角度θ2が約90°に設定されている。そし
て、リーマ本体1の膨出部3は、先端アール部3aと本
体部3bと基端テーパ部3cとを備え、切屑逃げ用溝4
が、先端アール部3aから基端テーパ部3cを越えて形
成され、砥粒部2が、先端アール部3aから基端テーパ
部3cに跨って形成され、油溜め凹部8が、本体部3b
に形成されている。なお、連通孔6、9の孔径(直径)
としては、例えば、1mm〜1.5mm位に設定されて
いる。他の構成は上記図1〜図3のリーマと同様である
ので、その説明を省略する。
FIGS. 4 to 6 show another embodiment. In this case, six chip escape grooves 4 are arranged at a pitch of about 60 ° along the circumferential direction so that the chip escapes. The communication groove 6 and the oil reservoir recess 8 are provided with three communication holes 6 and 9, respectively. The torsion angle of the chip escape groove 4, that is, the angle θ between the direction of the reamer axis L and the chip escape groove 4 is about 15 °.
° is set. Furthermore, the reamer axis L of the communication hole 6
The angle θ 1 with respect to the direction is set to about 30 °, and the angle θ 2 of the communication hole 9 at the tip with respect to the reamer axis L direction is about 60 °.
And the angle θ 2 of the other two communication holes 9 with respect to the direction of the reamer axis L is set to about 90 °. The bulging portion 3 of the reamer main body 1 includes a distal end round portion 3a, a main body portion 3b, and a proximal taper portion 3c.
Is formed from the distal end round portion 3a to the base end taper portion 3c, the abrasive grain portion 2 is formed from the distal end round portion 3a to the base end taper portion 3c, and the oil reservoir recess 8 is formed in the main body portion 3b.
Is formed. In addition, the hole diameter (diameter) of the communication holes 6 and 9
Is set to, for example, about 1 mm to 1.5 mm. The other configuration is the same as that of the reamer shown in FIGS.

【0024】この図4〜図6に示すリーマを使用して、
孔の仕上げ加工を行えば、上記図1〜図3のリーマと同
様、油溜め凹部8から切削油を噴出させて、砥粒部2と
切削面との間の切屑を切屑逃げ用溝4へ押流すことがで
き、砥粒部2に切屑が密着することを有効に防止するこ
とができる。
Using the reamer shown in FIGS. 4 to 6,
After finishing the hole, similarly to the reamer of FIGS. 1 to 3, the cutting oil is jetted from the oil reservoir recess 8, and the chip between the abrasive grain portion 2 and the cutting surface is transferred to the chip escape groove 4. The chips can be flushed away, and the chips can be effectively prevented from adhering to the abrasive grains 2.

【0025】ところで、油溜め凹部8として、図7に示
すように、連通孔9より大径の円形(又は楕円乃至長円
形)の凹窪部から構成してもよい。すなわち、切削油を
溜めることができ、しかも、切屑逃げ溝4への切削油流
出のための中空室が形成されればよい。そのため、この
図7に示す油溜め凹部8であっても、油溜め凹部8から
切削油を噴出させて、砥粒部2と切削面との間の切屑を
切屑逃げ用溝4へ押流すことができる。
Incidentally, as shown in FIG. 7, the oil reservoir recess 8 may be formed of a circular (or elliptical or oblong) concave recess having a larger diameter than the communication hole 9. That is, it is only necessary that the cutting oil can be stored, and that a hollow chamber for cutting oil outflow to the chip escape groove 4 is formed. Therefore, even in the oil reservoir recess 8 shown in FIG. 7, the cutting oil is ejected from the oil reservoir recess 8 to flush chips between the abrasive grain portion 2 and the cutting surface into the chip escape groove 4. Can be.

【0026】[0026]

【実施例】次に、実施例を示す。表1に示し切削条件に
て図4〜図6に示すリーマ(溝付リーマ)と、これと同
一の寸法形状であって、油溜め凹部8と連通孔9を有さ
ない溝なしリーマとを使用して孔仕上げ加工を行った。
Next, an embodiment will be described. Under the cutting conditions shown in Table 1, a reamer (grooved reamer) shown in FIGS. 4 to 6 and a grooveless reamer having the same dimensions and shape but without the oil reservoir recess 8 and the communication hole 9 are used. Used for hole finishing.

【0027】[0027]

【表1】 [Table 1]

【0028】そして、その結果を図8のグラフ図で示
す。すなわち、溝なしリーマでは、切削長さが10m位
になれば、面荒さが規格を越えるのに対し、溝付リーマ
では、切削長さが20mを越えても規格を越えなかっ
た。このように、この発明のような溝付リーマでは、長
期にわたって安定して切削面(孔の内周面)を仕上げる
ことができる。
The results are shown in the graph of FIG. That is, in the case of the grooved reamer, when the cutting length is about 10 m, the surface roughness exceeds the standard, whereas in the case of the grooved reamer, the cutting length exceeds 20 m, but the standard is not exceeded. Thus, with the grooved reamer of the present invention, the cutting surface (the inner peripheral surface of the hole) can be stably finished over a long period of time.

【0029】以上にこの発明のリーマの具体的な実施の
形態について説明したが、この発明は上記実施の形態に
限定されるものではなく、この発明の範囲内で種々変更
して実施することが可能である。例えば、各連通孔6、
9の数、配設ピッチ、孔径、形状、傾斜角度θ1、θ2
も変更自由であり、砥粒部2と切屑逃げ用溝4の数の増
減や各幅寸法W2、W1の大きさ等の変更も自由である。
また、切削部Sの軸心方向長さや外径寸法等も、加工す
る孔の大きさや、被加工材の材質等に応じて変更自由で
ある。さらに、油溜め凹部8としては、その断面形状が
半円形、半楕円形、半多角形等の種々の形状のものを採
用することができる。また、切削部Sが基端側に向かっ
て順次縮径するいわゆるバックテーパ型のものであって
もよい。さらに、切屑逃げ用溝4や砥粒部2の傾斜角度
θの変更も可能であり、リーマ軸心L方向と平行に配設
されるものであってもよく、さらには、切屑逃げ用溝4
等がリーマ軸心L方向に対して湾曲していてもよい。
Although the specific embodiments of the reamer of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. It is possible. For example, each communication hole 6,
9, arrangement pitch, hole diameter, shape, inclination angle θ 1 , θ 2, etc. can be freely changed, and the number of abrasive grains 2 and chip escape grooves 4 can be increased or decreased, and the width W 2 , W 1 The size and the like can be freely changed.
The axial length, outer diameter, and the like of the cutting portion S can also be freely changed according to the size of the hole to be processed, the material of the workpiece, and the like. Further, the oil reservoir recess 8 may have various cross-sectional shapes such as a semicircle, a semi-ellipse, and a semi-polygon. Further, a so-called back taper type in which the cutting portion S is gradually reduced in diameter toward the base end side may be used. Furthermore, the chip escape groove 4 and the inclination angle θ of the abrasive grain portion 2 can be changed, and the chip escape groove 4 may be disposed in parallel with the reamer axis L direction.
May be curved with respect to the reamer axis L direction.

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

【図1】この発明のリーマの実施形態を示す側面図であ
る。
FIG. 1 is a side view showing an embodiment of a reamer of the present invention.

【図2】上記リーマの要部正面図である。FIG. 2 is a front view of a main part of the reamer.

【図3】図1のA−O−B線断面図である。FIG. 3 is a sectional view taken along line AOB of FIG. 1;

【図4】他のリーマの実施形態を示す要部半截断面図で
ある。
FIG. 4 is a half sectional view of an essential part showing another embodiment of a reamer.

【図5】上記他のリーマの要部断面図である。FIG. 5 is a sectional view of a main part of the other reamer.

【図6】上記他のリーマのリーマ本体の側面図である。FIG. 6 is a side view of a reamer body of another reamer.

【図7】別のリーマの要部簡略正面図である。FIG. 7 is a simplified front view of a main part of another reamer.

【図8】面荒さを示すグラフである。FIG. 8 is a graph showing surface roughness.

【図9】従来のリーマの側面図である。FIG. 9 is a side view of a conventional reamer.

【図10】従来のリーマの要部正面図である。FIG. 10 is a front view of a main part of a conventional reamer.

【図11】図9のA´−O´−B´線断面図である。11 is a sectional view taken along line A′-O′-B ′ of FIG. 9;

【符号の説明】[Explanation of symbols]

1 リーマ本体 2 砥粒部 4 切屑逃げ用溝 5 切削油供給孔 8 油溜め凹部 9 連通孔 10 砥粒残部 L リーマ軸心 DESCRIPTION OF SYMBOLS 1 Reamer main body 2 Abrasive part 4 Chip escape groove 5 Cutting oil supply hole 8 Oil reservoir recess 9 Communication hole 10 Remaining abrasive grain L Reamer shaft center

フロントページの続き Fターム(参考) 3C011 EE01 3C050 EB07 EB09 3C063 AA10 AB03 AB08 BA24 BB02 BC02 CC12 EE21 FF20 Continued on the front page F term (reference) 3C011 EE01 3C050 EB07 EB09 3C063 AA10 AB03 AB08 BA24 BB02 BC02 CC12 EE21 FF20

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 先端部にリーマ軸心(L)方向に延びる
複数本の切屑逃げ用溝(4)を有するリーマ本体(1)
と、このリーマ本体(1)の隣合う切屑逃げ用溝(4)
(4)間に砥粒が付設されてなる砥粒部(2・・)とを
備え、上記リーマ本体(1)に、上記切屑逃げ用溝
(4)に切削油を供給するための切削油供給孔(5)を
設けたリーマであって、上記砥粒部(2)に油溜め凹部
(8)を設けると共に、上記油溜め凹部(8)と切削油
供給孔(5)とを連通孔(9)にて連結して、切削油を
この油溜め凹部(8)から噴出させて切屑を切屑逃げ用
溝(4)へ押出すことを特徴とするリーマ。
1. A reamer body (1) having a plurality of chip escape grooves (4) extending in the direction of a reamer axis (L) at its tip.
And a chip escape groove (4) adjacent to the reamer body (1).
(4) an abrasive grain portion (2...) Having abrasive grains provided therebetween, and a cutting oil for supplying cutting oil to the chip escape groove (4) to the reamer body (1). A reamer provided with a supply hole (5), wherein an oil reservoir recess (8) is provided in the abrasive part (2), and a communication hole is provided between the oil reservoir recess (8) and the cutting oil supply hole (5). A reamer, which is connected at (9) to eject cutting oil from the oil sump recess (8) to push chips into a chip escape groove (4).
【請求項2】 上記油溜め凹部(8)がリーマ軸心
(L)方向に延びる長凹溝であることを特徴とする請求
項1のリーマ。
2. The reamer according to claim 1, wherein the oil reservoir recess is a long groove extending in the direction of the reamer axis.
【請求項3】 上記油溜め凹部(8)の長手方向端部と
砥粒部(2)のリーマ軸心方向端縁との間に砥粒残部
(10)(10)が形成されていることを特徴とする請
求項1又は請求項2のリーマ。
3. An abrasive grain remaining portion (10) (10) is formed between a longitudinal end of the oil reservoir recess (8) and an edge in a reamer axial direction of the abrasive grain portion (2). The reamer according to claim 1 or 2, wherein:
JP2001074628A 2001-03-15 2001-03-15 Reamer Expired - Fee Related JP4539899B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001074628A JP4539899B2 (en) 2001-03-15 2001-03-15 Reamer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001074628A JP4539899B2 (en) 2001-03-15 2001-03-15 Reamer

Publications (2)

Publication Number Publication Date
JP2002273620A true JP2002273620A (en) 2002-09-25
JP4539899B2 JP4539899B2 (en) 2010-09-08

Family

ID=18931860

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP4539899B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012106301A (en) * 2010-11-16 2012-06-07 Allied Material Corp Reamer and method of forming hole using same
US8272815B2 (en) 2005-10-03 2012-09-25 Mitsubishi Materials Corporation Boring tool and method of boring pilot hole
JP2015112690A (en) * 2013-12-12 2015-06-22 自動車部品工業株式会社 Deburring device for crossing hole and deburring method using the same
JP2016010845A (en) * 2014-06-30 2016-01-21 アイシン・エィ・ダブリュ株式会社 Drilling tool
KR20170040811A (en) * 2015-10-05 2017-04-14 이화다이아몬드공업 주식회사 Edge wheel for edge grinding of substrate having passage of cooling water and method of manufacturing the wheel
CN115302001A (en) * 2022-10-11 2022-11-08 南通金通茂电子有限公司 Semiconductor material cutting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124874A (en) * 1985-11-26 1987-06-06 Kobe Steel Ltd Cutting tool
JPH0322863U (en) * 1989-07-14 1991-03-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124874A (en) * 1985-11-26 1987-06-06 Kobe Steel Ltd Cutting tool
JPH0322863U (en) * 1989-07-14 1991-03-11

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8272815B2 (en) 2005-10-03 2012-09-25 Mitsubishi Materials Corporation Boring tool and method of boring pilot hole
JP2012106301A (en) * 2010-11-16 2012-06-07 Allied Material Corp Reamer and method of forming hole using same
JP2015112690A (en) * 2013-12-12 2015-06-22 自動車部品工業株式会社 Deburring device for crossing hole and deburring method using the same
JP2016010845A (en) * 2014-06-30 2016-01-21 アイシン・エィ・ダブリュ株式会社 Drilling tool
KR20170040811A (en) * 2015-10-05 2017-04-14 이화다이아몬드공업 주식회사 Edge wheel for edge grinding of substrate having passage of cooling water and method of manufacturing the wheel
KR102396166B1 (en) * 2015-10-05 2022-05-11 이화다이아몬드공업 주식회사 Edge wheel for edge grinding of substrate having passage of cooling water and method of manufacturing the wheel
CN115302001A (en) * 2022-10-11 2022-11-08 南通金通茂电子有限公司 Semiconductor material cutting device

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