WO1999021674A1 - Reamer and a method of using the same - Google Patents

Reamer and a method of using the same Download PDF

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Publication number
WO1999021674A1
WO1999021674A1 PCT/JP1998/004860 JP9804860W WO9921674A1 WO 1999021674 A1 WO1999021674 A1 WO 1999021674A1 JP 9804860 W JP9804860 W JP 9804860W WO 9921674 A1 WO9921674 A1 WO 9921674A1
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WO
WIPO (PCT)
Prior art keywords
hole
reamer
cutting edge
axis
peripheral surface
Prior art date
Application number
PCT/JP1998/004860
Other languages
French (fr)
Japanese (ja)
Inventor
Tsuneo Nishikawa
Original Assignee
Honda Giken Kogyo Kabushiki Kaisha
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 Giken Kogyo Kabushiki Kaisha filed Critical Honda Giken Kogyo Kabushiki Kaisha
Publication of WO1999021674A1 publication Critical patent/WO1999021674A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/102—Back spot-facing or chamfering
    • 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

Definitions

  • the present invention relates to a reamer for finishing an inner peripheral surface of a through-hole penetrating a workpiece, chamfering a first opening end and a second opening end of the through-hole, and a method of using the reamer. .
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to enable finishing and chamfering of a through hole of a work to be performed with a single tool.
  • the inner peripheral surface of a through-hole penetrating a work is finished and the first and second open ends of the through-hole are chamfered.
  • the rim of the machine tool has a shank that is clamped to the chuck of the machine tool and a head that has a first cutting edge formed on the outer peripheral surface to finish the inner peripheral surface of the through hole of the workpiece.
  • the head has a small-diameter portion formed by cutting out a first cutting edge at an intermediate portion in the axial direction, and a first opening of the through hole is formed at a step portion at both axial ends of the small-diameter portion. It is proposed to form a second cutting edge and a third cutting edge for chamfering the end and the second open end, respectively.
  • the inner peripheral surface of the through hole is finished with the first cutting edge formed on the head of the reamer, and the second cutting edge formed on the step portion at both ends in the axial direction of the small diameter portion of the head.
  • both finishing and chamfering of the through-hole can be completed with a single reamer.
  • the working time required for processing can be significantly reduced.
  • the method for using the reamer wherein: a step of finishing the inner peripheral surface of the through hole of the workpiece with the first cutting edge of the rotating reamer; and a circle centered on the axis of the through hole. Performing a step of chamfering the first opening end and the second opening end of the through-hole with the second cutting edge and the third cutting edge while moving the axis of the reamer rotating along the circumference.
  • a method of using a reamer is proposed.
  • the inner surface of the through-hole is finished by aligning the axis of the rotating reamer with the axis of the through-hole, and then the axis of the rotating reamer is eccentric with respect to the axis of the through-hole.
  • the first and second open ends of the through-hole are chamfered by the second and third cutting blades by rotating, so that a single reamer can perform both finishing and chamfering of the through-hole. And the working time required for machining can be greatly reduced.
  • FIG. 1 is an overall side view of the reamer
  • FIG. 2 is a cross-sectional view of a pin hole of a work
  • FIG. 3 is an explanatory view of an operation
  • FIG. 4 is an explanatory view of a conventional processing step.
  • 1 to 3 show one embodiment of the present invention.
  • the reamer T is composed of a cylindrical shank 1 that is clamped to the chuck of the machine tool, and a head 2 that is integrally connected on the axis Lt of the shank 1.
  • Four first cutting edges 3 having an inclination angle of 25 ° are spirally formed on the head 2.
  • a small-diameter portion 4 formed by cutting out the first cutting blades 3... Is formed at a step portion at both axial ends of the small-diameter portion 4 with respect to the axis Lt by 45 °.
  • An inclined second cutting edge 5 and a third cutting edge 6 are formed.
  • the length of the small diameter portion 4 is set to be larger than the thickness of the work described later.
  • FIG. 2 shows the workpiece W (engine connection) that has been machined by the reamer T of this embodiment.
  • FIG. Reamer one T are those performed in conjunction with finishing the inserted with the pin holes H to the prepared hole H 'of the work, the first open hole H of the pin hole H, and the chamfering of the second opening H 2.
  • the reamer T's shank 1 is clamped to the chuck of a machine tool (not shown), and is moved in the axial direction while rotating around the axis Lt, thereby to obtain the head 2 thereof. Finishes the inner peripheral surface of the pin hole H of the work W with the first cutting edge 3 provided in the.
  • the axis Lt of the rotating reamer T is moved in the axial direction while eccentrically rotating on a circumference of a radius r centered on the axis Lw of the pin hole H of the workpiece W. by, in the second cutting edge 5 ...
  • the reamer T of the present invention can be applied to the processing of any other work other than the connecting rod.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Abstract

A reamer (T) has first cutting edge (3) for finish-machining the inner circumferential surface of a through hole (H) of the work (W), and second and third cutting edges (5, 6), at stepped portions (41, 42) at the end of a small-diameter portion (4) that is formed by cutting the first cutting edge (3), for chamfering first and second opening edges (H1, H2) of the through hole (H), respectively. After finish-machining the inner circumferential surface of the through hole (H) with the first cutting edge (3) by rotating the reamer (T) about its axis (Lt), the first and second opening edges (H1, H2) are chamfered by the second and third cutting edges (5, 6), respectively by moving the reamer (T) along a circle whose center is the axis (Lw) of the through hole (H) and which has a radius r. Therefore the finish-machining and the chamfering of the through hole of the work can be performed with a single reamer.

Description

明細書 リ一マーおよびその使用方法  Description Reamers and methods of using them
発明の分野 Field of the invention
本発明は、 ワークを貫通する貫通孔の内周面を仕上げ加工するとともに、 前記 貫通孔の第 1開口端および第 2開口端を面取り加工するためのリーマ一と、 その リーマーの使用方法とに関する。  The present invention relates to a reamer for finishing an inner peripheral surface of a through-hole penetrating a workpiece, chamfering a first opening end and a second opening end of the through-hole, and a method of using the reamer. .
従来の技術 Conventional technology
従来、 例えばエンジンのコネクティングロッドのようなワークのエンド部にピ ン孔を加工するような場合、 先ず図 4 Aに示すようにワーク Wのピン孔 Hの内周 面をリーマー 0 1で仕上げ加工し、 続いて図 4 Bに示すようにピン孔 Hの一端開 口部を皿もみドリル 0 2で面取り加工し、 最後に図 4 Cに示すようにワーク Wを 表裏反転してピン孔 Hの他端開口部を皿もみドリル 0 2で面取り加工していた。 しかしながら上記従来の方法では、 仕上げ加工および面取り加工をそれぞれ別 個の工具で行う必要があるため、 工具の交換に要する時間が無駄であるだけでな く、 工具の管理コストが嵩むという問題がある。  Conventionally, when a pin hole is machined at the end of a work such as a connecting rod of an engine, first, as shown in Fig. 4A, the inner peripheral surface of the pin hole H of the work W is finished with a reamer 01. Then, as shown in Fig. 4B, one end opening of the pin hole H is chamfered with a countersink drill 02, and finally, as shown in Fig. The other end opening was chamfered with a countersink drill 02. However, in the above-mentioned conventional method, since the finishing and the chamfering need to be performed with separate tools, not only the time required for tool replacement is wasted, but also the tool management cost increases. .
本発明は前述の事情に鑑みてなされたもので、 ワークの貫通孔の仕上げ加工と 面取り加工とを 1個の工具で行えるようにすることを目的とする。  The present invention has been made in view of the above circumstances, and an object of the present invention is to enable finishing and chamfering of a through hole of a work to be performed with a single tool.
発明の開示 Disclosure of the invention
上記目的を達成するために、 本発明によれば、 ワークを貫通する貫通孔の内周 面を仕上げ加工するとともに、 前記貫通孔の第 1開口端および第 2開口端を面取 り加工するためのリ一マーであって、 工作機械のチヤックにクランプされるシャ ンクと、 ワークの貫通孔の内周面を仕上げ加工する第 1切刃を外周面に形成した へッドとを一体に備えてなり、 前記へッドはその軸方向中間部に第 1切刃を切り 欠いて形成した小径部を有しており、 この小径部の軸方向両端の段部に前記貫通 孔の第 1開口端および第 2開口端をそれぞれ面取り加工する第 2切刃および第 3 切刃を形成したことを特徴とするものが提案される。  According to the present invention, in order to achieve the above object, the inner peripheral surface of a through-hole penetrating a work is finished and the first and second open ends of the through-hole are chamfered. The rim of the machine tool has a shank that is clamped to the chuck of the machine tool and a head that has a first cutting edge formed on the outer peripheral surface to finish the inner peripheral surface of the through hole of the workpiece. The head has a small-diameter portion formed by cutting out a first cutting edge at an intermediate portion in the axial direction, and a first opening of the through hole is formed at a step portion at both axial ends of the small-diameter portion. It is proposed to form a second cutting edge and a third cutting edge for chamfering the end and the second open end, respectively.
上記構成によれば、 リーマ一のへッドに形成した第 1切刃で貫通孔の内周面を 仕上げ加工し、 更にへッドの小径部の軸方向両端の段部に形成した第 2切刃およ W According to the above configuration, the inner peripheral surface of the through hole is finished with the first cutting edge formed on the head of the reamer, and the second cutting edge formed on the step portion at both ends in the axial direction of the small diameter portion of the head. Cutting edge and W
び第 3切刃で貫通孔の第 1開口端および第 2開口端をそれぞれ面取り加工するの で、 1本のリ一マーで貫通孔の仕上げ加工および面取り加の両方を済ますことが 可能になって加工に要する作業時間を大幅に短縮することができる。 Since the first and second open ends of the through-hole are chamfered by the third and third cutting edges, both finishing and chamfering of the through-hole can be completed with a single reamer. Thus, the working time required for processing can be significantly reduced.
また本発明によれば、 上記リーマーの使用方法であって、 回転するリーマーの 第 1切刃でワークの貫通孔の内周面を仕上げ加工する工程と、 前記貫通孔の軸線 を中心とする円周に沿って回転するリ一マーの軸線を移動させながら第 2切刃お よび第 3切刃で該貫通孔の第 1開口端および第 2開口端をそれぞれ面取り加工す る工程とを行うことを特徴とするリーマーの使用方法が提案される。  Further, according to the present invention, there is provided the method for using the reamer, wherein: a step of finishing the inner peripheral surface of the through hole of the workpiece with the first cutting edge of the rotating reamer; and a circle centered on the axis of the through hole. Performing a step of chamfering the first opening end and the second opening end of the through-hole with the second cutting edge and the third cutting edge while moving the axis of the reamer rotating along the circumference. A method of using a reamer is proposed.
上記構成によれば、 回転するリ一マーの軸線を貫通孔の軸線に一致させること により貫通孔の内周面を仕上げ加工し、 続いて回転するリーマーの軸線を貫通孔 の軸線に対して偏心回転運動させることにより第 2切刃および第 3切刃で貫通孔 の第 1開口端および第 2開口端をそれぞれ面取り加工するので、 1本のリーマー で貫通孔の仕上げ加工および面取り加の両方を済ますことが可能になって加工に 要する作業時間を大幅に短縮することができる。  According to the above configuration, the inner surface of the through-hole is finished by aligning the axis of the rotating reamer with the axis of the through-hole, and then the axis of the rotating reamer is eccentric with respect to the axis of the through-hole. The first and second open ends of the through-hole are chamfered by the second and third cutting blades by rotating, so that a single reamer can perform both finishing and chamfering of the through-hole. And the working time required for machining can be greatly reduced.
図面の簡単な説明  BRIEF DESCRIPTION OF THE FIGURES
図 1はリーマーの全体側面図、 図 2はワークのピン孔の断面図、 図 3は作用 の説明図、 図 4は従来の加工工程の説明図である。  FIG. 1 is an overall side view of the reamer, FIG. 2 is a cross-sectional view of a pin hole of a work, FIG. 3 is an explanatory view of an operation, and FIG. 4 is an explanatory view of a conventional processing step.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明の実施の形態を、 添付図面に示した本発明の実施例に基づいて説 明する。  Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
図 1〜図 3は本発明の一実施例を示すものである。  1 to 3 show one embodiment of the present invention.
図 1に示すように、 リ一マ Tは工作機械のチヤックにクランプされる円柱状の シャンク 1と、 このシャンク 1の軸線 L t上に一体に連設されたへッド 2とから 構成される。 ヘッド 2には 2 5 ° の傾斜角を有する 4条の第 1切刃 3…が螺旋 状に形成される。 ヘッド 2の長手方向中間には前記第 1切刃 3…を切り欠いた 小径部 4が形成されており、 この小径部 4の軸方向両端の段部に前記軸線 L tに 対して 4 5 ° 傾斜した第 2切刃 5…および第 3切刃 6…が形成される。 前記小 径部 4の長さは、 後述するワークの厚さよりも大きく設定される。  As shown in Fig. 1, the reamer T is composed of a cylindrical shank 1 that is clamped to the chuck of the machine tool, and a head 2 that is integrally connected on the axis Lt of the shank 1. You. Four first cutting edges 3 having an inclination angle of 25 ° are spirally formed on the head 2. At the middle of the head 2 in the longitudinal direction, a small-diameter portion 4 formed by cutting out the first cutting blades 3... Is formed at a step portion at both axial ends of the small-diameter portion 4 with respect to the axis Lt by 45 °. An inclined second cutting edge 5 and a third cutting edge 6 are formed. The length of the small diameter portion 4 is set to be larger than the thickness of the work described later.
図 2は本実施例のリーマー Tによる加工を終えたワーク W (エンジンのコネク ティングロッドのエンド部） の断面を示すものである。 リーマ一 Tはワーク の 下孔 H ' に挿入されてピン孔 Hを仕上げ加工するとともに、 ピン孔 Hの第 1開 口 H, および第 2開口 H2 の面取り加工を行うものである。 Fig. 2 shows the workpiece W (engine connection) that has been machined by the reamer T of this embodiment. FIG. Reamer one T are those performed in conjunction with finishing the inserted with the pin holes H to the prepared hole H 'of the work, the first open hole H of the pin hole H, and the chamfering of the second opening H 2.
先ず、 図 3 Aに示すように、 図示せぬ工作機械のチャックにリーマー Tのシャ ンク 1をクランプし、 軸線 L t回りに回転させながら軸方向に移動させることに より、 そのへッド 2に設けた第 1切刃 3…でワーク Wのピン孔 Hの内周面を仕 上げ加工する。続いて、 図 3 Bに示すように、 回転するリーマー Tの軸線 L tを、 ワーク Wのピン孔 Hの軸線 Lwを中心とする半径 rの円周上を偏心回転運動させ ながら軸方向に移動させることにより、 小径部 4の先端側の段部に形成した第 2 切刃 5…でピン孔 Hの第 1開口端 Ht を面取り加工した後に、 図 3 Cに示すよう に、 リーマー Tの軸方向に移動させて小径部 4の基端側の段部に形成した第 3切 刃 6…でピン孔 Hの第 2開口端 H2 を面取り加工する。 そして最後に、 リーマー Tの軸線 L tをピン孔 Hの軸線 Lwに一致させることにより、 リ一マー Tをピン 孔 Hから引き抜いて加工を完了する。 First, as shown in FIG. 3A, the reamer T's shank 1 is clamped to the chuck of a machine tool (not shown), and is moved in the axial direction while rotating around the axis Lt, thereby to obtain the head 2 thereof. Finishes the inner peripheral surface of the pin hole H of the work W with the first cutting edge 3 provided in the. Subsequently, as shown in FIG. 3B, the axis Lt of the rotating reamer T is moved in the axial direction while eccentrically rotating on a circumference of a radius r centered on the axis Lw of the pin hole H of the workpiece W. by, in the second cutting edge 5 ... formed in the step portion of the distal end side of the small diameter portion 4 of the first open end H t of the pin hole H after chamfering, as shown in FIG. 3 C, the reamer T It is moved axially chamfered second open end H 2 of the third cutting blade 6 ... pin hole H formed in the step portion of the base end side of the small diameter portion 4. Finally, by aligning the axis Lt of the reamer T with the axis Lw of the pin hole H, the reamer T is pulled out from the pin hole H, and the processing is completed.
このように、 1本のリーマ一 Tを用いて、 ピン孔 Hの内周面の仕上げ加工と、 そのピン孔 Hの第 1開口端 H, および第 2開口端 H2 の面取り加工とを行うこと ができるので、 工具の交換に要する時間が不要になって加工時間が大幅に削減さ れる。 In this manner, the finishing of the inner peripheral surface of the pin hole H and the chamfering of the first opening end H and the second opening end H 2 of the pin hole H are performed using one reamer T. This eliminates the time required to change tools and greatly reduces machining time.
以上、 本発明の実施例を詳述したが、 本発明は前記実施例に限定されるもので なく、 種々の設計変更を行うことが可能である。  As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various design changes can be made.
例えば、 本発明のリーマ一 Tはコネクティングロッド以外の他の任意のワーク の加工に適用することができる。  For example, the reamer T of the present invention can be applied to the processing of any other work other than the connecting rod.

Claims

請求の範囲 The scope of the claims
1. ワーク （W) を貫通する貫通孔 （H) の内周面を仕上げ加工するとともに、 前記貫通孔 （H) の第 1開口端 （H, ) および第 2開口端 （H2 ) を面取り加工 するためのリーマーであって、 1. Finish the inner peripheral surface of the through hole (H) penetrating the work (W) and chamfer the first open end (H,) and the second open end (H 2 ) of the through hole (H). A reamer for processing,
工作機械のチャックにクランプされるシャンク （1) と、 ワーク （W) の貫通 孔（H)の内周面を仕上げ加工する第 1切刃（3)を外周面に形成したへッド（2) とを一体に備えてなり、 前記ヘッド （2) はその軸方向中間に第 1切刃 （3) を 切り欠いて形成した小径部 （4) を有しており、 この小径部 （4) の軸方向両端 の段部 （4, ， 42 ) に前記貫通孔 （H) の第 1開口端 （H, ) および第 2開口 端 （H2 ) をそれぞれ面取り加工する第 2切刃 （5) および第 3切刃 （6) を形 成したことを特徴とするリ一マー。 A shank (1) clamped to the chuck of the machine tool and a head (2) formed on the outer peripheral surface with a first cutting edge (3) for finishing the inner peripheral surface of the through hole (H) of the workpiece (W) The head (2) has a small-diameter portion (4) formed by cutting out a first cutting edge (3) at an axial center thereof, and the small-diameter portion (4) stepped portions of the axial ends of (4, 4 2) the first open end of the through hole (H) in (H,) and a second open end second cutting edge (H 2) and respectively chamfered (5 ) And a third cutting edge (6).
2. 請求項 1に記載されたリーマー （T) の使用方法であって、  2. Use of the reamer (T) according to claim 1, wherein
回転するリーマー （T) の第 1切刃 （2) でワーク （W) の貫通孔 （H) の内 周面を仕上げ加工する工程と、  Finishing the inner peripheral surface of the through hole (H) of the workpiece (W) with the first cutting edge (2) of the rotating reamer (T);
前記貫通孔 （H) の軸線 （Lw) を中心とする円周に沿って回転するリーマー (T) の軸線 （L t) を移動させながら第 2切刃 （5) および第 3切刃 （6) で 該貫通孔 （H) の第 1開口端 （H, ) および第 2開口端 （H2 ) をそれぞれ面取 り加工する工程と、 The second cutting edge (5) and the third cutting edge (6) are moved while moving the axis (Lt) of the reamer (T) rotating along the circumference centered on the axis (Lw) of the through hole (H). ), Chamfering the first open end (H,) and the second open end (H 2 ) of the through hole (H), respectively;
を行うことを特徴とするリ一マーの使用方法。 A method of using a reamer.
PCT/JP1998/004860 1997-10-28 1998-10-27 Reamer and a method of using the same WO1999021674A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29517797A JPH11129116A (en) 1997-10-28 1997-10-28 Reamer and its using method
JP9/295177 1997-10-28

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