JP3188415B2 - Reamer and hole finishing method using the same - Google Patents
Reamer and hole finishing method using the sameInfo
- Publication number
- JP3188415B2 JP3188415B2 JP09680098A JP9680098A JP3188415B2 JP 3188415 B2 JP3188415 B2 JP 3188415B2 JP 09680098 A JP09680098 A JP 09680098A JP 9680098 A JP9680098 A JP 9680098A JP 3188415 B2 JP3188415 B2 JP 3188415B2
- Authority
- JP
- Japan
- Prior art keywords
- reamer
- shape
- cutting edge
- hole
- end side
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
- B23D77/02—Reamers with inserted cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D2277/00—Reaming tools
- B23D2277/70—Polygonal sections, e.g. for torque transmission between parts able to be uncoupled
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、例えば高硬度鋼、
鋳鉄などの高硬度材の穴仕上加工に好適なリーマ及びそ
れを用いた穴仕上加工方法に関する。The present invention relates to, for example, high-hardness steel,
The present invention relates to a reamer suitable for hole finishing of a hard material such as cast iron, and a hole finishing method using the same.
【０００２】[0002]
【従来の技術】従来、高硬度材用のリーマとしては、例
えば特開平７−４０１４０号に示されるように、超硬合
金等からなる工具本体の表面に、ＣＢＮ（立方晶窒化硼
素）、ダイヤモンド等の硬質砥粒を電着したものなどが
用いられていた。2. Description of the Related Art Conventionally, as a reamer for a high-hardness material, for example, as shown in Japanese Patent Application Laid-Open No. 7-40140, CBN (cubic boron nitride), diamond Electrodeposited hard abrasive grains such as these have been used.
【０００３】また、特開平４−８７７１８号には、外周
刃部の軸直角断面形状が３角形以上の多角形とし、外周
刃に連続して食い付き又は底刃を設けた高硬度材穴仕上
用のリーマが開示されている。Japanese Unexamined Patent Publication No. 4-87718 discloses a high-hardness material hole finish in which an outer peripheral edge portion has a polygonal cross section perpendicular to the axis of a triangle or more and is continuously bited or provided with a bottom edge. A reamer is disclosed.
【０００４】更に、本出願人による実開平６−３９３２
４号には、刃部の軸方向に対して垂直な断面形状が、五
角形以上の奇数の多角形か、又は五角形以上の奇数の多
角形であって、その一辺が円弧状をなす形状のリーマが
開示されている。[0004] Furthermore, Japanese Utility Model Laid-Open No. 6-3932 by the present applicant.
In No. 4, the cross section perpendicular to the axial direction of the blade portion is a pentagon or more odd polygon or a pentagon or more odd polygon, and one side of the reamer has an arc shape. Is disclosed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
いずれのリーマも、例えば高硬度鋼、鋳鉄などの高硬度
材の加工に対しては、充分な耐久性が得られず、まして
やこれらの高硬度材の穴仕上加工を高速切削条件で行う
ことはできなかった。However, none of the conventional reamers can provide sufficient durability for processing of high-hardness materials such as high-hardness steel and cast iron. Hole finishing of the material could not be performed under high-speed cutting conditions.
【０００６】したがって、本発明の目的は、例えば高硬
度鋼、鋳鉄などの高硬度材の穴仕上加工を高速切削条件
で行っても充分な耐久性が得られるリーマ及びそれを用
いた穴仕上加工方法を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a reamer capable of obtaining sufficient durability even when performing a hole finishing process on a high-hardness material such as high-hardness steel or cast iron under high-speed cutting conditions, and a hole finishing process using the same. It is to provide a method.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明のリーマは、全体として円柱状であって、基
端側がシャンク部をなし、先端側が先端方向に向けて次
第に拡径されるバックテーパ部をなす工具本体と、基端
側にＣＢＮ焼結体、先端側に高硬度金属を配置し接合し
て構成され、先端面から見て多角形状又は多角形の一辺
を円弧状にした形状をなし、先端側に向けて先細のテー
パ部と、このテーパ部の基端側に続くストレート部とを
有し、基端面を前記工具本体の先端面に固着された切れ
刃とを備えていることを特徴とする。In order to achieve the above object, the reamer of the present invention has a columnar shape as a whole, a shank portion on a base end side, and a diameter of the reamer gradually expanded toward a tip end. A tool body that forms a back taper portion, a CBN sintered body on the base end side, and a high-hardness metal on the tip end side are arranged and joined, and a polygonal shape or one side of the polygon is formed into an arc shape when viewed from the tip end surface. A cutting edge having a shape, having a tapered portion tapered toward the distal end and a straight portion continuing to the proximal end side of the tapered portion, and having a cutting edge fixed to the distal end surface of the tool main body at the proximal end surface. It is characterized by being.
【０００８】この場合、本発明のリーマにおいては、前
記工具本体の先端面中央にボスが突設され、前記切れ刃
の中心に前記ボスが挿入される穴が形成されており、前
記ボスを前記穴に挿入することによってセンタリングさ
れていることが好ましい。また、前記切れ刃が、先端面
から見て五角形又は五角形の一辺を円弧状にした形状を
なすことが好ましい。更に、前記バックテーパ部の傾斜
角が２〜５°であり、前記テーパ部の傾斜角が３０〜４
５°であり、前記ストレート部の軸方向長さがリーマ直
径の０．０５〜０．１０倍であることが好ましい。更に
また、前記工具本体、及び前記切れ刃の高硬度金属が、
超硬合金であることが好ましい。In this case, in the reamer of the present invention, a boss is provided at the center of the tip end surface of the tool body, and a hole for inserting the boss is formed at the center of the cutting edge. Preferably, it is centered by inserting it into the hole. In addition, it is preferable that the cutting edge has a pentagonal shape or a shape in which one side of the pentagon is formed in an arc shape when viewed from the tip end surface. Further, the inclination angle of the back taper portion is 2 to 5 °, and the inclination angle of the taper portion is 30 to 4 °.
Preferably, the straight portion has an axial length of 0.05 to 0.10 times the reamer diameter. Furthermore, the tool body, and the high hardness metal of the cutting edge,
It is preferably a cemented carbide.
【０００９】また、本発明の穴仕上加工方法は、高硬度
材の穴仕上加工において、前述したリーマを用い、周速
５０〜３００ｍ／分の回転速度で加工を行うことを特徴
とする。A hole finishing method according to the present invention is characterized in that, in the hole finishing of a hard material, the hole is machined at a peripheral speed of 50 to 300 m / min using the above-mentioned reamer.
【００１０】本発明のリーマによれば、先端面から見て
多角形状又は多角形の一辺を円弧状にした形状をなす切
れ刃の角部によって切削及びこすり作用がなされる。こ
の場合、切れ刃のテーパ部により穴への食い付き、荒加
工がなされ、ストレート部によって仕上加工がなされ
る。工具本体のバックテーパ部は、リーマを軸方向に移
動させるときの抵抗を少なくする。According to the reamer of the present invention, the cutting and rubbing action is performed by the corners of the cutting edge having a polygonal shape or a shape in which one side of the polygon is formed into an arc shape when viewed from the front end surface. In this case, the tapered portion of the cutting edge bites into the hole, roughing is performed, and finishing is performed by the straight portion. The back taper portion of the tool body reduces the resistance when moving the reamer in the axial direction.
【００１１】そして、本発明のリーマは、基端側にＣＢ
Ｎ焼結体、先端側に高硬度金属を配置し両者を接合して
切れ刃を構成したので、超硬合金の外周にＣＢＮやダイ
ヤモンドからなる砥粒を電着した従来のリーマに比べて
耐久性に優れており、例えば高硬度鋼、鋳鉄などの高硬
度材の穴仕上加工を高速切削条件で行っても充分な耐久
性が得られる。The reamer of the present invention has a CB
N-sintered body, high-hardness metal is placed on the tip side, and both are joined to form a cutting edge, so it is more durable than conventional reamers in which abrasive grains made of CBN or diamond are electrodeposited on the outer periphery of cemented carbide. For example, sufficient durability can be obtained even when performing hole finishing of high-hardness materials such as high-hardness steel and cast iron under high-speed cutting conditions.
【００１２】また、本発明の穴仕上加工方法によれば、
上記リーマを用い、周速５０〜３００ｍ／分の回転速度
で加工を行うことにより、例えば高硬度鋼、鋳鉄などの
高硬度材を、これまで行われていなかったような高速切
削条件で加工を行うことが可能となる。Further, according to the hole finishing method of the present invention,
By using the above reamer to perform processing at a peripheral speed of 50 to 300 m / min, high-hardness materials such as high-hardness steel and cast iron can be processed under high-speed cutting conditions that have not been performed before. It is possible to do.
【００１３】[0013]
【発明の実施の形態】図１〜３には、本発明によるリー
マの一実施形態が示されている。図１は先端の一部を切
り欠いて示す側面図、図２は先端側から見た端面図、図
３は切れ刃を取り外して示した斜視図である。1 to 3 show one embodiment of a reamer according to the present invention. FIG. 1 is a side view showing a part of the tip cut away, FIG. 2 is an end view seen from the tip side, and FIG. 3 is a perspective view showing a cutting edge removed.
【００１４】このリーマは、工具本体１０と、切れ刃２
０とで構成されている。工具本体１０は、基端側がシャ
ンク部１１をなし、先端側がバックテーパ部１２をなし
ている。バックテーパ部１２の傾斜角θ1 は、２〜５°
であることが好ましい。２°より小さいと工具本体外周
部が加工面に接触するという問題があり、５°より大き
いと工具本体部の剛性が低下するという問題がある。工
具本体１０の先端面１３の中央には、ボス１４が突設さ
れている。ボス１４は、この実施形態では円柱状となっ
ているが、角柱状であってもよい。なお、工具本体１４
としては、超硬合金が好ましく用いられるが、その他の
工具用金属材料、例えば高速度鋼などを用いることもで
きる。The reamer includes a tool body 10 and a cutting edge 2.
0. The tool body 10 has a shank portion 11 on the proximal end side and a back taper portion 12 on the distal end side. The inclination angle θ 1 of the back taper portion 12 is 2 to 5 °
It is preferred that If it is smaller than 2 °, there is a problem that the outer peripheral portion of the tool body comes into contact with the processing surface, and if it is larger than 5 °, there is a problem that the rigidity of the tool main body decreases. A boss 14 is provided at the center of the tip surface 13 of the tool body 10. The boss 14 has a columnar shape in this embodiment, but may have a prismatic shape. The tool body 14
As the material, a cemented carbide is preferably used, but other metal materials for tools, for example, high-speed steel can also be used.
【００１５】切れ刃２０は、基端側にＣＢＮ焼結体２
１、先端側に高硬度金属２２を配置して、両者を接合し
て構成されている。なお、少なくとも基部側の一部にＣ
ＢＮ焼結体２１が配置されていればよいので、ＣＢＮ焼
結体と高硬度金属とを交互に配置した３層以上で構成す
ることも可能である。ＣＢＮ焼結体２１と高硬度金属２
２との接合は、例えば圧着等によって行うことができ
る。また、高硬度金属２２としては、工具本体１４と同
様に、超硬合金が好ましく用いられるが、その他の工具
用金属材料を用いることもできる。The cutting edge 20 has a CBN sintered body 2
1. A high-hardness metal 22 is disposed on the distal end side, and both are joined. Note that at least a part of the base side has C
Since it is sufficient that the BN sintered body 21 is disposed, the BN sintered body 21 may be formed of three or more layers in which the CBN sintered body and the high-hardness metal are alternately disposed. CBN sintered body 21 and high hardness metal 2
2 can be joined by, for example, pressure bonding. As the high-hardness metal 22, similarly to the tool body 14, a cemented carbide is preferably used, but other metal materials for tools can also be used.
【００１６】切れ刃２０は、先端面から見た形状が、こ
の実施形態では五角形をなしているが、三角形、四角
形、六角形、七角形等であってもよい。ただし、五角形
以上の奇数の多角形であることが好ましく、五角形であ
ることが最も好ましい。The cutting edge 20 has a pentagonal shape as viewed from the tip end face in this embodiment, but may have a triangular, quadrangular, hexagonal, heptagonal or the like. However, it is preferably a polygon having an odd number of pentagons or more, and most preferably a pentagon.
【００１７】上記先端面から見た形状が五角形以上の奇
数の多角形である場合には、角部が鈍角をなすので、穴
の拡大しろが小さくなり、寸法のコントロールが容易と
なり、より高精度の加工が可能となる。また、一つの角
部によって切削がなされるとき、対向する部分は穴の内
周面に接触しないため、切削時のバランスが良好とな
り、摩耗しても切削時の刃部のふれを少なくすることが
できる。In the case where the shape viewed from the above-mentioned front end surface is an odd polygon of not less than a pentagon, since the corners form an obtuse angle, the margin of enlargement of the hole is reduced, the size is easily controlled, and higher accuracy is achieved. Can be processed. Also, when cutting is performed by one corner, the opposing part does not contact the inner peripheral surface of the hole, so that the balance at the time of cutting is good, and even if worn, the blade part during cutting should be less run-out. Can be.
【００１８】切れ刃２０の外周には、先端側に向けて先
細のテーパ部２３と、このテーパ部２３の基端側に連続
するストレート部２４とが形成されている。この場合、
ＣＢＮ焼結体２１は、上記テーパ部２３及びストレート
部２４の両者に渡る部分に設けられていることが好まし
い。On the outer periphery of the cutting edge 20, there are formed a tapered portion 23 tapering toward the distal end, and a straight portion 24 continuing to the base end of the tapered portion 23. in this case,
It is preferable that the CBN sintered body 21 is provided at a portion extending over both the tapered portion 23 and the straight portion 24.
【００１９】テーパ部２３の傾斜角θ2 は、３０〜４５
°であることが好ましい。この傾斜角θ2 が、３０°よ
り小さいと拡大しろが小さくなるという問題があり、４
５°より大きいと拡大しろが大きくなるという問題があ
る。The inclination angle θ 2 of the tapered portion 23 is 30 to 45.
° is preferred. If the inclination angle θ 2 is smaller than 30 °, there is a problem that the enlargement margin becomes small.
If it is larger than 5 °, there is a problem that the enlargement margin becomes large.
【００２０】また、ストレート部２４の軸方向長さａ
は、リーマ直径ｂの０．０５〜０．１０倍であることが
好ましい。上記長さａが上記範囲よりも短いと加工精度
にバラツキが生じ易いという問題があり、上記範囲より
も長いと切削抵抗増大による加工特性の低下を引き起こ
すという問題がある。The axial length a of the straight portion 24
Is preferably 0.05 to 0.10 times the reamer diameter b. If the length a is shorter than the above range, there is a problem that the processing accuracy tends to vary, and if the length a is longer than the above range, there is a problem that the cutting characteristics increase and the processing characteristics are deteriorated.
【００２１】切れ刃２０の中心には、貫通した穴２５が
形成されており、この穴２５に工具本体１０のボス１４
を挿入することにより、センタリングがなされる。切れ
刃２０の工具本体１０への固着は、例えばろう付け等に
よって行うことができる。なお、工具本体１０の先端面
にボス１４を突設することなく、工具本体１０の先端面
と切れ刃２０の基端面とを、位置合わせしつつ当接させ
て、ろう付け等により接合してもよい。A through hole 25 is formed at the center of the cutting edge 20, and the boss 14 of the tool body 10 is formed in the hole 25.
Is inserted to perform centering. The cutting edge 20 can be fixed to the tool body 10 by, for example, brazing. Note that, without projecting the boss 14 on the distal end surface of the tool main body 10, the distal end surface of the tool main body 10 and the base end surface of the cutting edge 20 are brought into contact with each other while being aligned, and are joined by brazing or the like. Is also good.
【００２２】本発明のリーマは、特に高硬度材に好適で
ある。ここで、高硬度材とは、ロックウェル６０以上の
部材、例えば高硬度鋼、鋳鉄、インコネル、ハステロイ
等を意味する。The reamer of the present invention is particularly suitable for high hardness materials. Here, the high-hardness material means a member of Rockwell 60 or more, for example, high-hardness steel, cast iron, Inconel, Hastelloy, or the like.
【００２３】本発明の穴仕上加工方法は、上記リーマを
用い、周速５０〜３００ｍ／分の回転速度で加工を行う
ことを特徴としている。この場合、周速が上記よりも遅
いと高速加工が困難となり、周速が上記よりも速いと工
具寿命が低下しやすいという問題がある。The hole finishing method according to the present invention is characterized in that the above-mentioned reamer is used for processing at a peripheral speed of 50 to 300 m / min. In this case, if the peripheral speed is lower than the above, high-speed machining becomes difficult, and if the peripheral speed is higher than the above, there is a problem that the tool life tends to be shortened.
【００２４】また、本発明の穴仕上加工において、送り
速度は、１回転当り０．０５〜０．３０ｍｍが好まし
い。送り速度が上記よりも遅いと高速加工のメリットが
出せず、送り速度が上記よりも速いと加工精度が低下し
やすいという問題がある。In the hole finishing of the present invention, the feed rate is preferably 0.05 to 0.30 mm per rotation. If the feed rate is lower than the above, the advantage of high-speed machining cannot be obtained, and if the feed rate is higher than the above, there is a problem that the processing accuracy tends to be reduced.
【００２５】図４には、切れ刃２０の形状を変えた他の
実施形態が示されている。この実施形態では、切れ刃２
０の先端面から見た形状が、五角形の一辺を円弧状にし
た形状をなしている。すなわち、テーパ部２３の外周の
一箇所に円錐面２３ａ、及びストレート部２４の外周の
一箇所に円筒面２４ａが形成されている。FIG. 4 shows another embodiment in which the shape of the cutting edge 20 is changed. In this embodiment, the cutting edge 2
The shape as viewed from the front end surface of the pentagon has a shape in which one side of the pentagon is formed into an arc shape. That is, a conical surface 23a is formed at one position on the outer periphery of the tapered portion 23, and a cylindrical surface 24a is formed at one position on the outer periphery of the straight portion 24.
【００２６】上記のように、多角形の一辺を円弧状にす
ることにより、リーマ径が細くなっても断面積を広くと
って必要とされる剛性を維持でき、円弧状をなす部分
が、仕上加工をする穴の内壁に当接して回転ガイドとな
るので、高速回転時に発生する微小な振動を抑えて、穴
の仕上加工精度を向上させることができる。As described above, by forming one side of the polygon into an arc shape, the required rigidity can be maintained by increasing the cross-sectional area even if the diameter of the reamer is reduced, and the arc-shaped portion is finished. Since the rotation guide is brought into contact with the inner wall of the hole to be machined, it is possible to suppress minute vibrations generated at the time of high-speed rotation, and to improve the finishing accuracy of the hole.
【００２７】[0027]
【実施例】図１〜３に示したリーマにおいて、直径６ｍ
ｍのものを作製した。このリーマを用い、焼き入れ鋼
（ＳＫＤ１１）に設けた、直径６ｍｍ×深さ７ｍｍの穴
の仕上加工を行った。切削条件は、回転速度２７００Ｒ
ＰＭ（周速５１ｍ／分）、送り速度２７０ｍｍ／分、拡
大代２〜５μｍとした。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the reamer shown in FIGS.
m were produced. Using this reamer, a hole having a diameter of 6 mm and a depth of 7 mm provided in hardened steel (SKD11) was finished. The cutting condition is a rotation speed of 2700R.
PM (peripheral speed: 51 m / min), feed speed: 270 mm / min, and enlargement allowance: 2 to 5 μm.
【００２８】この条件で仕上面の粗さＲｍａｘ１〜２μ
ｍを保てなくなるまで、加工を繰り返しところ、３００
０穴を加工しても上記仕上精度を維持することができ
た。Under these conditions, the roughness Rmax of the finished surface is 1 to 2 μm.
The process was repeated until m could not be maintained.
The finishing accuracy could be maintained even when the 0 hole was machined.
【００２９】[0029]
【発明の効果】以上説明したように、本発明によれば、
基端側にＣＢＮ焼結体、先端側に高硬度金属を配置し、
これらを接合して切れ刃を構成したので、超硬合金の外
周にＣＢＮやダイヤモンドからなる砥粒を電着した従来
のリーマに比べて耐久性に優れており、例えば高硬度
鋼、鋳鉄などの高硬度材の穴仕上加工を高速切削条件で
行っても充分な耐久性が得られる。その結果、例えば高
硬度鋼、鋳鉄などの高硬度材を、これまで行われていな
かったような高速切削条件で加工を行うことが可能とな
る。As described above, according to the present invention,
A CBN sintered body is placed on the base end, and a high-hardness metal is placed on the tip,
Since these are joined to form a cutting edge, they are more durable than conventional reamers in which abrasive grains made of CBN or diamond are electrodeposited on the outer periphery of cemented carbide. For example, high hardness steel, cast iron, etc. Sufficient durability can be obtained even when performing hole finishing of high-hardness materials under high-speed cutting conditions. As a result, for example, it is possible to machine a high-hardness material such as high-hardness steel or cast iron under high-speed cutting conditions that have not been performed before.
【図１】本発明の一実施形態によるリーマであって、そ
の先端の一部を切り欠いて示す側面図である。FIG. 1 is a side view showing a reamer according to an embodiment of the present invention, with a part of a tip thereof being cut away.
【図２】同リーマの先端側から見た端面図である。FIG. 2 is an end view of the reamer viewed from a tip side.
【図３】同リーマの切れ刃を取り外して示す斜視図であ
る。FIG. 3 is a perspective view of the reamer with a cutting edge removed.
【図４】切れ刃の形状を変えた他の実施形態を示す、先
端側から見た端面図である。FIG. 4 is an end view showing another embodiment in which the shape of the cutting edge is changed, as viewed from the distal end side.
１０ 工具本体 １１ シャンク部 １２ バックテーパ部 １３ 先端面 １４ ボス ２０ 切れ刃 ２１ ＣＢＮ焼結体 ２２ 高硬度金属 ２３ テーパ部 ２４ ストレート部 ２５ 穴 ２３ａ 円錐面 ２４ａ 円筒面 DESCRIPTION OF SYMBOLS 10 Tool main body 11 Shank part 12 Back taper part 13 Tip surface 14 Boss 20 Cutting edge 21 CBN sintered body 22 High hardness metal 23 Taper part 24 Straight part 25 Hole 23a Conical surface 24a Cylindrical surface
Claims (6)
ャンク部をなし、先端側が先端方向に向けて次第に拡径
されるバックテーパ部をなす工具本体と、 基端側にＣＢＮ焼結体、先端側に高硬度金属を配置し接
合して構成され、先端面から見て多角形状又は多角形の
一辺を円弧状にした形状をなし、先端側に向けて先細の
テーパ部と、このテーパ部の基端側に続くストレート部
とを有し、基端面を前記工具本体の先端面に固着された
切れ刃とを備えていることを特徴とするリーマ。1. A tool body having a columnar shape as a whole, a shank portion on a base end side, and a back taper portion whose tip end side gradually increases in diameter toward a tip end direction, and a CBN sintered body on a base end side. , Is configured by arranging and joining a high-hardness metal on the distal end side, and has a polygonal shape or a shape in which one side of the polygon is formed into an arc shape when viewed from the distal end surface, and a tapered portion tapered toward the distal end side and this taper A straight portion continuing to a base end side of the portion, and a cutting edge having a base end surface fixed to a front end surface of the tool body.
され、前記切れ刃の中心に前記ボスが挿入される穴が形
成されており、前記ボスを前記穴に挿入することによっ
てセンタリングされている請求項１記載のリーマ。2. A boss is protruded at the center of the tip end surface of the tool body, and a hole is formed at the center of the cutting edge for inserting the boss. The boss is inserted into the hole for centering. The reamer of claim 1, wherein
は五角形の一辺を円弧状にした形状をなす請求項１又は
２記載のリーマ。3. The reamer according to claim 1, wherein the cutting edge has a pentagonal shape or a shape in which one side of the pentagon is formed in an arc shape when viewed from a front end surface.
であり、前記テーパ部の傾斜角が３０〜４５°であり、
前記ストレート部の軸方向長さがリーマ直径の０．０５
〜０．１０倍である請求項１〜３のいずれか１つに記載
のリーマ。4. An inclination angle of the back taper portion is 2 to 5 °.
And the inclination angle of the tapered portion is 30 to 45 °,
The axial length of the straight part is 0.05 of the reamer diameter.
The reamer according to any one of claims 1 to 3, wherein the reamer is 0.10 times.
金属が、超硬合金である請求項１〜４のいずれか１つに
記載のリーマ。5. The reamer according to claim 1, wherein the hard metal of the tool body and the cutting edge is a cemented carbide.
１〜５のいずれかに記載されたリーマを用い、周速５０
〜３００ｍ／分の回転速度で加工を行うことを特徴とす
る穴仕上加工方法。6. In a hole finishing process for a high-hardness material, a reamer according to any one of claims 1 to 5 is used.
A hole finishing processing method, wherein processing is performed at a rotation speed of up to 300 m / min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09680098A JP3188415B2 (en) | 1998-03-25 | 1998-03-25 | Reamer and hole finishing method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09680098A JP3188415B2 (en) | 1998-03-25 | 1998-03-25 | Reamer and hole finishing method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11277333A JPH11277333A (en) | 1999-10-12 |
| JP3188415B2 true JP3188415B2 (en) | 2001-07-16 |
Family
ID=14174707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09680098A Expired - Fee Related JP3188415B2 (en) | 1998-03-25 | 1998-03-25 | Reamer and hole finishing method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3188415B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4647057B2 (en) * | 2000-04-13 | 2011-03-09 | ダイジ▲ェ▼ット工業株式会社 | Pilot hole correction tool |
| JP4483200B2 (en) * | 2003-05-26 | 2010-06-16 | 三菱マテリアル株式会社 | Throw-away reamer |
| DE102005047510A1 (en) * | 2005-10-04 | 2007-04-05 | Gühring Ohg | Chip removing tool e.g. reamer, has tool head mounted at tool shanks as separate part, and made in single-piece from hard material with function layer that contains super hard material such as cubic boron nitride or polycrystalline diamond |
-
1998
- 1998-03-25 JP JP09680098A patent/JP3188415B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11277333A (en) | 1999-10-12 |
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