WO2012063802A1 - リーマ及び穴の加工方法 - Google Patents
リーマ及び穴の加工方法 Download PDFInfo
- Publication number
- WO2012063802A1 WO2012063802A1 PCT/JP2011/075679 JP2011075679W WO2012063802A1 WO 2012063802 A1 WO2012063802 A1 WO 2012063802A1 JP 2011075679 W JP2011075679 W JP 2011075679W WO 2012063802 A1 WO2012063802 A1 WO 2012063802A1
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- WIPO (PCT)
- Prior art keywords
- reamer
- cutting fluid
- hole
- cylindrical portion
- processing method
- Prior art date
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- 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
- B23D77/006—Reaming tools with means for lubricating or cooling
-
- 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
- B23D2277/52—Details of helices, e.g. helix angles or helices of special form
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/03—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
Definitions
- the present invention relates to a reamer and a hole processing method.
- Reamers may be used to adjust the shape of the holes provided in the workpiece.
- Patent Document 1 Japanese Patent No. 2724120 discloses a reamer for processing composite materials.
- a point that forms a torsion groove that twists in a direction opposite to a preset rotation direction toward the tip, a biting portion whose outer diameter increases from the tip of the cutting edge toward the shank, and A back taper portion whose outer diameter decreases at a rate of 0.05 to 0.25 mm / 100 mm toward the shank portion following the biting portion is formed on the cutting edge portion, opposite to the outer peripheral cutting edge of the biting portion It is disclosed that a margin part having a width of 0.05 to 0.20 mm is formed adjacent to the direction, and a flank of 20 to 30 ° is provided following the margin part.
- Patent Document 1 by adopting such a configuration, the cutting resistance of the composite material processing reamer can be suitably reduced, the point that the finished surface is not roughened, and the chips generated from the biting part are forward, that is, The point of discharging toward the tip of the reamer is described.
- FIG. 1 is a schematic diagram illustrating an example of such a reamer.
- the reamer 105 shown in FIG. 1 is used for adjusting the shape of the hole 104 to be processed provided in the workpiece 101.
- the workpiece 101 has a composite material plate 102 and a metal plate 103, which are laminated.
- the reamer 105 is provided with a blade 106 and a discharge port 107.
- the blade 106 extends by twisting in the opposite direction to the rotation direction.
- a cutting fluid flow path into which cutting fluid is introduced is formed inside the reamer 105.
- the discharge port 107 is connected to the cutting fluid flow path.
- the reamer 105 rotates around the central axis c along the rotation direction.
- the rotating reamer 105 is fed along the traveling direction, and is inserted into the workpiece hole 104 from the composite material plate 102 side. Further, cutting fluid is introduced into the cutting fluid flow path.
- the introduced cutting fluid 109 is discharged toward the traveling direction side of the reamer 105 through the discharge port 107.
- the workpiece 101 may include a metal plate 103. At the surface portion (part A in FIG. 1) of the metal plate 103 on the traveling direction side, the metal plate 103 may be pushed toward the traveling direction side, and the metal plate 103 may be deformed to generate burrs. In other words, when the blade 106 is twisted and extended in the opposite direction, there is a problem that burrs are generated in the metal plate 103.
- FIG. 2 is a schematic diagram illustrating another example of the reamer 105.
- the blade 106 extends so as to twist in the rotational direction side (hereinafter referred to as a positive direction) as it goes in the distal direction.
- a positive direction the rotational direction side
- Other points are the same as in the example shown in FIG.
- chips 108 are generated on the inner wall of the hole 104 to be processed on the side opposite to the traveling direction (the rear end side of the reamer). So that it is shaved.
- the processed hole 104 is cut by upper cutting.
- the metal plate 103 is prevented from being pushed toward the traveling direction on the surface portion of the metal plate 103, and generation of burrs can be suppressed.
- the chip 108 is discharged toward the opposite side of the traveling direction, whereas the cutting fluid 109 is discharged toward the traveling direction side. Therefore, the discharge of the chips 108 is hindered by the cutting fluid 107, and the chips 108 may be clogged in the reamer 105. As a result, the inner wall of the hole 104 to be machined may be scraped by the chips 108 and a desired hole diameter may not be obtained.
- an object of the present invention is to provide a reamer and a hole processing method capable of suppressing the generation of burrs and obtaining a desired hole diameter.
- the reamer according to the present invention has a columnar shape, and rotates in a rotation direction set in advance around a center line, and is provided on the outer peripheral surface of the columnar portion and twisted in a direction to be an upper cut.
- the cutting fluid channel extends so that the cutting fluid is discharged from the discharge port group toward the rear end side.
- the blade portion is formed so as to be an upper cut, the occurrence of burrs can be suppressed even if a metal plate is used as a workpiece.
- the cutting fluid is discharged from the discharge port group toward the rear end side. That is, the chips and the cutting fluid are discharged in the same direction (direction toward the rear end side). Therefore, the discharge of the chips is not hindered by the cutting fluid, and the chips are not clogged with the reamer.
- the hole to be machined is prevented from being unnecessarily shaved by chips, and a desired hole diameter can be obtained.
- the hole processing method includes a step of rotating a reamer and a step of processing a hole formed in advance in a processed plate using the rotating reamer.
- the reamer includes a columnar cylindrical portion and a blade portion that is provided on the outer peripheral surface of the cylindrical portion and extends while twisting.
- the step of rotating includes the step of rotating the reamer in a direction that results in an upper cut.
- the processing step includes a step of introducing a cutting fluid into the cylindrical portion and a step of discharging the introduced cutting fluid from the outer peripheral surface of the cylindrical portion toward the rear end side.
- a reamer and a hole processing method capable of suppressing generation of burrs and obtaining a good finished shape.
- the reamer according to the present embodiment is used for adjusting the shape of the hole provided in the workpiece.
- This embodiment demonstrates the case where the main wing member of an aircraft is used as a workpiece.
- FIG. 3 is a schematic cross-sectional view showing a workpiece.
- the workpiece includes a first composite material plate 1-1, a second composite material plate 1-2, and a metal plate 2. These are laminated so that the metal plate 2 is sandwiched between the first composite material plate 1-1 and the second composite material laminate.
- the first composite material plate 1-1 and the second composite material plate 1-2 are, for example, CFRP (carbon fiber reinforced plastic) plates.
- the metal plate 2 is, for example, a titanium (Ti) plate.
- the first composite material plate 1-1, the second composite material plate 1-2, and the metal plate 2 are permanently fastened by the fastening member 4. That is, it is impossible to disassemble the workpiece.
- a hole to be processed 3 is provided so as to penetrate the first composite material plate 1-1, the second composite material plate 1-2, and the metal plate 2.
- the reamer according to the present embodiment is used for adjusting the shape of the hole 3 to be processed.
- the workpiece cannot be disassembled, if burrs are generated in the metal plate 2 during processing, the generated burrs cannot be removed. Therefore, when processing such a workpiece, it is strongly required to adjust the shape of the hole 3 so as not to generate burrs.
- FIG. 4 is a side view showing the reamer 5 according to the present embodiment.
- the internal shape of the reamer 5 is partially drawn.
- the reamer 5 includes a cylindrical portion 6, a plurality of blade portions 7, a cutting fluid channel 9, and a discharge port group 8.
- the cylindrical part 6 forms the main body part of the reamer 5 and has a cylindrical shape.
- the cylindrical portion 6 is connected to a rotation mechanism (not shown) at the rear end portion. By the rotation mechanism, the cylindrical portion 6 rotates in the rotation direction around the central axis c.
- the plurality of blade portions 7 are formed on the side surface of the cylindrical portion 6. Each blade portion 7 is twisted so as to go in the same direction as the rotation direction as it goes toward the tip side. That is, each blade portion 7 is twisted in the positive direction.
- FIG. 5 is a cross-sectional view showing the AA ′ cross section of FIG. 4. As FIG. 5 shows, each blade part 7 is formed so that the front-end
- the cutting fluid channel 9 is a portion into which the cutting fluid is introduced, and is provided inside the cylindrical portion 6.
- the discharge port group 8 is provided to discharge the introduced cutting fluid, and is provided in the groove portion 12.
- FIG. 6 is an explanatory diagram for explaining the configuration of the cutting fluid flow path 9 and the discharge port group 8.
- the cutting fluid flow path 9 has a trunk portion 9-1 and a plurality of branch portions 9-2.
- the trunk 9-1 extends along the central axis c.
- Each branch portion 9-2 is connected to the trunk portion 9-1 at one end and to each discharge port (8-1 to 8-3) at the other end.
- the branch portion 9-2 extends from the trunk portion 9-1 toward the rear end side.
- the cutting fluid introduced into the trunk portion 9-1 is directed from the discharge ports (8-1 to 8-3) to the rear end side via the branch portion 9-2. Discharged.
- FIG. 7 is an explanatory diagram for explaining the hole processing method according to the present embodiment.
- the reamer 5 is rotated in the rotation direction. Further, the cutting fluid 10 is introduced into the cutting fluid flow path 9. As a result, the cutting fluid 10 is discharged from the respective discharge ports (8-1 to 8-3) toward the rear end side. Further, the rotating reamer 5 is moved in the traveling direction and inserted into the hole 3 to be processed. Thereby, the inner wall of the hole 3 to be processed is cut by the blade portion 7, and the shape of the hole 3 to be processed is adjusted.
- the blade portion 7 is twisted in the positive direction. Accordingly, the inner wall of the hole 3 to be machined is shaved by the upper cut, and the chips 11 are generated on the rear end side of the blade portion 7. The generated chips 11 are guided to the rear end side of the reamer 5 along the groove 12 and discharged.
- the metal plate 2 is prevented from being pushed to the traveling direction side at the surface portion (part A in the drawing) of the metal plate 2 on the traveling direction side. The As a result, the occurrence of burrs on the metal plate 2 is prevented.
- the cutting fluid 10 is discharged toward the rear end side.
- the discharge direction of the cutting fluid 10 is the same as the discharge direction of the chips 11. Therefore, the discharge of the chips 11 is not hindered by the cutting fluid 10. It is possible to prevent the chips 11 from clogging the groove portion 12 and to adjust the shape of the hole 3 to be processed so as to have a desired hole diameter.
- the case where the metal plate 2 is permanently sandwiched between the first composite material plate 1-1 and the second composite material plate 1-2 in the work material has been described.
- the reamer 5 according to the present embodiment can be suitably applied to such a workpiece in that it can prevent the occurrence of burrs.
- the workpiece to which the reamer 5 according to the present embodiment is applied is not limited to such a workpiece. If the workpiece includes a metal plate, burrs may occur during processing.
- burrs When burrs are generated on the metal plate, deburring work is required. Therefore, if a material including a metal plate is used as a workpiece, by using the reamer 5 according to the present embodiment, the generation of burrs can be suppressed and the deburring operation can be omitted.
- Comparative Example 1 As Comparative Example 1, a reamer in which the blade portion 7 was twisted and extended in the opposite direction was prepared.
- the twist angle of the blade was set to 30 °.
- FIG. 8 is an explanatory diagram for explaining the definition of the twist angle.
- the twist angle is an angle formed by a line formed by the blade part (tip part of the blade part) and a straight line parallel to the central axis c of the reamer 5 passing through one point on the line.
- the cutting fluid flow path and the discharge port were formed in the reamer so that the cutting fluid was discharged toward the tip side.
- the outer diameter of the reamer was set to 16 mm.
- the reamer according to Comparative Example 1 was rotated at a rotation speed of 200 rpm, and a hole to be processed provided in the metal plate was processed.
- the flow rate of the cutting fluid was set to 15 to 17 ml / min. Also, the feed rate (reamer progress rate) was 0.05 mm / rev. Set to. After processing, the height of burrs generated on the metal plate was measured.
- Example 1 As Example 1, a reamer was prepared in which the blade portion 7 was twisted and extended in the positive direction. The twist angle of the blade was set to 10 °. Moreover, the cutting fluid flow path and the discharge port group were formed in the reamer so that the cutting fluid was discharged toward the rear end side. Other configurations were the same as those in Comparative Example 1. Using the reamer according to Example 1, a hole to be processed was processed under the same conditions as in Comparative Example 1. After processing, the height of burrs generated on the metal plate was measured.
- Example 2 As Example 2, a reamer having a blade portion twist angle of 30 ° was prepared. Other configurations are the same as those in the first embodiment. Using the reamer according to Example 2, a hole to be processed was processed under the same conditions as in Comparative Example 1. After processing, the height of burrs generated on the metal plate was measured.
- Example 3 As Example 3, a reamer having a blade portion twist angle of 45 ° was prepared. Other configurations are the same as those in the first embodiment. Using the reamer according to Example 3, a hole to be processed was processed under the same conditions as in Comparative Example 1. After processing, the height of burrs generated on the metal plate was measured.
- FIG. 9 is a table showing experimental results. As shown in FIG. 9, in Comparative Example 1, the burr height was 0.2 mm or more. In Example 1, the height of the burr was 0.2 mm or more. In Example 2, the height of the burr was 0.1 mm to 0.2 mm. In Example 3, the height of the burr was less than 0.1 mm.
- Example 2 has a smaller burr height. That is, it was confirmed that the generation of burrs can be suppressed by setting the twist direction of the blade portion to the positive direction and discharging the cutting fluid to the rear end side.
- Example 1 comparing Example 1 to Example 3, it is understood that the larger the twist angle, the more the burr height can be suppressed. Moreover, it was confirmed that the burr
- the twist angle is preferably 50 ° or less. That is, the twist angle is preferably 30 ° or more from the viewpoint of suppressing the generation of burrs, and preferably 50 ° or less from the viewpoint of suppressing fuzz.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Milling Processes (AREA)
- Drilling Tools (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
比較例1として、刃部7が逆方向にねじれて伸びるリーマを用意した。また、刃部のねじれ角は、30°に設定した。図8は、ねじれ角の定義を説明するための説明図である。ねじれ角は、刃部(刃部の先端部)が形成する線と、その線上の1点を通るリーマ5の中心軸cに平行な直線とが成す角度である。また、リーマには、切削液が先端側に向かって排出されるように、切削液流路及び排出口を形成した。また、リーマの外径は、16mmに設定した。
実施例1として、刃部7が正方向にねじれて伸びるリーマを用意した。また、刃部のねじれ角を、10°に設定した。また、リーマに、切削液が後端側に向かって排出されるように、切削液流路及び排出口群を形成した。その他の構成については、比較例1と同様とした。この実施例1に係るリーマを用いて、比較例1と同一条件により、被加工穴を加工した。加工後に、金属板に発生したバリの高さを測定した。
実施例2として、刃部のねじれ角が30°であるリーマを用意した。その他の構成については、実施例1と同様である。この実施例2に係るリーマを用いて、比較例1と同一条件により、被加工穴を加工した。加工後に、金属板に発生したバリの高さを測定した。
実施例3として、刃部のねじれ角が45°であるリーマを用意した。その他の構成については、実施例1と同様である。この実施例3に係るリーマを用いて、比較例1と同一条件により、被加工穴を加工した。加工後に、金属板に発生したバリの高さを測定した。
図9は、実験結果を示すテーブルである。図9に示されるように、比較例1では、バリの高さが0.2mm以上であった。実施例1では、バリの高さが0.2mm以上であった。実施例2では、バリの高さが0.1mm~0.2mmであった。実施例3では、バリの高さが0.1mm未満であった。
この出願は、2010年11月10日に出願された特許出願番号2010-252316号の日本特許出願に基づいており、その出願による優先権の利益を主張し、その出願の開示は、引用することにより、ここに組み込まれている。
Claims (9)
- 円柱状であり、中心線の周りに予め設定された回転方向に回転する、円柱部と、
前記円柱部の外周面に設けられ、アッパーカットとなるような方向にねじれて伸びる、刃部と、
前記円柱部内に設けられ、切削液が導入される、切削液流路と、
前記円柱部の外周面に形成され、前記切削液流路に接続される、排出口群と、
を具備し、
前記切削液流路は、切削液が前記排出口群から後端側へ向かって排出されるように、伸びている
リーマ。 - 請求項1に記載されたリーマであって、
前記刃部は、先端側に向かって前記回転方向に伸びるように、ねじれている
リーマ。 - 請求項1または2に記載されたリーマであって、
前記排出口群は、複数の排出口を有しており、
前記切削液流路は、
前記円柱部の中心軸に沿って伸びる、幹部と、
それぞれが一端で前記幹部に接続され、他端で前記複数の排出口の各々に接続される、複数の枝部とを有し、
前記複数の枝部の各々は、前記幹部から後端側に向かって伸びている
リーマ。 - 請求項1乃至3のいずれかに記載されたリーマであって、
前記刃部のねじれ角は、30°以上、50°以下である
リーマ。 - リーマを回転させる工程と、
回転するリーマを用いて、被加工板に予め形成された穴を加工する工程と、
を具備し、
前記リーマは、
円柱状の円柱部と、
前記円柱部の外周面に設けられ、ねじれながら伸びる、刃部とを備え、
前記回転させる工程は、アッパーカットとなるような方向に前記リーマを回転させる工程を含み、
前記加工する工程は、
前記円柱部の内部に切削液を導入する工程と、
導入された切削液を、前記円柱部の外周面から後端側へ向かって排出する工程とを含んでいる
穴の加工方法。 - 請求項5に記載された穴の加工方法であって、
前記被加工板は、金属板を含んでいる
穴の加工方法。 - 請求項6に記載された穴の加工方法であって、
前記被加工板は、更に、第1繊維強化プラスチック板を含み、
前記金属板と前記繊維強化プラスチック板とは、積層されている
穴の加工方法。 - 請求項7に記載された穴の加工方法であって、
前記被加工板は、更に、第2繊維強化プラスチック板を含み、
前記金属板は、前記第1繊維強化プラスチック板と前記第2繊維強化プラスチック板との間に挟まれている
穴の加工方法。 - 請求項5乃至8のいずれかに記載された穴の加工方法であって、
前記刃部のねじれ角は、30°以上、50°以下である
穴の加工方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11839642.3A EP2639000A4 (en) | 2010-11-10 | 2011-11-08 | REAMER AND METHOD OF MACHINING A HOLE |
BR112013008486A BR112013008486A2 (pt) | 2010-11-10 | 2011-11-08 | escareador, e, método de processamento de furo |
CN2011800487977A CN103153513A (zh) | 2010-11-10 | 2011-11-08 | 铰刀以及孔的加工方法 |
RU2013115901/02A RU2013115901A (ru) | 2010-11-10 | 2011-11-08 | Развертка и способ обработки отверстия |
US13/877,690 US20130195572A1 (en) | 2010-11-10 | 2011-11-08 | Reamer and hole processing method |
CA2813920A CA2813920A1 (en) | 2010-11-10 | 2011-11-08 | Reamer and hole processing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010252316A JP2012101322A (ja) | 2010-11-10 | 2010-11-10 | リーマ及び穴の加工方法 |
JP2010-252316 | 2010-11-10 |
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US (1) | US20130195572A1 (ja) |
EP (1) | EP2639000A4 (ja) |
JP (1) | JP2012101322A (ja) |
CN (1) | CN103153513A (ja) |
BR (1) | BR112013008486A2 (ja) |
CA (1) | CA2813920A1 (ja) |
RU (1) | RU2013115901A (ja) |
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US20210299764A1 (en) * | 2020-03-24 | 2021-09-30 | The Boeing Company | Tool bit, a tooling assembly for applying a fluid to a surface, and a method |
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JP2003340631A (ja) * | 2002-05-17 | 2003-12-02 | Guehring Joerg | ボーリング孔のバリを取るための工具、装置、及びその方法 |
EP1561535B1 (en) * | 2004-02-06 | 2012-01-04 | Volvo Car Corporation | Cutting tool and method for using said cutting tool |
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2010
- 2010-11-10 JP JP2010252316A patent/JP2012101322A/ja active Pending
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2011
- 2011-11-08 WO PCT/JP2011/075679 patent/WO2012063802A1/ja active Application Filing
- 2011-11-08 RU RU2013115901/02A patent/RU2013115901A/ru not_active Application Discontinuation
- 2011-11-08 US US13/877,690 patent/US20130195572A1/en not_active Abandoned
- 2011-11-08 BR BR112013008486A patent/BR112013008486A2/pt not_active IP Right Cessation
- 2011-11-08 CN CN2011800487977A patent/CN103153513A/zh active Pending
- 2011-11-08 EP EP11839642.3A patent/EP2639000A4/en not_active Withdrawn
- 2011-11-08 CA CA2813920A patent/CA2813920A1/en not_active Abandoned
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EP2745967A1 (de) * | 2012-12-21 | 2014-06-25 | WFL Millturn Technologies GmbH & Co. KG | Verfahren zum Bearbeiten eines an einer Werkzeugmaschine eingespannten hohlen Werkstücks |
Also Published As
Publication number | Publication date |
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US20130195572A1 (en) | 2013-08-01 |
EP2639000A1 (en) | 2013-09-18 |
RU2013115901A (ru) | 2014-10-20 |
CN103153513A (zh) | 2013-06-12 |
EP2639000A4 (en) | 2014-03-12 |
CA2813920A1 (en) | 2012-05-18 |
BR112013008486A2 (pt) | 2016-08-09 |
JP2012101322A (ja) | 2012-05-31 |
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