JP3145277U - End mill structure - Google Patents

End mill structure Download PDF

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JP3145277U
JP3145277U JP2008005052U JP2008005052U JP3145277U JP 3145277 U JP3145277 U JP 3145277U JP 2008005052 U JP2008005052 U JP 2008005052U JP 2008005052 U JP2008005052 U JP 2008005052U JP 3145277 U JP3145277 U JP 3145277U
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end mill
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鴻武 李
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SPEED TIGER PRECISION TECHNOLOGY CO., LTD
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Abstract

【課題】エンドミルの切り込み量、切り込み速度および使用寿命を高める。
【解決手段】複数の螺旋状の切刃１０が円周上に環状に配列され、各隣合う切刃１０間には切屑排出溝１１が形成される。各切刃１０は切刃端１２、切刃背端１３、粗切削段１４および精密切削段１７を備える。切刃端１２は一側の切屑排出溝１１の一辺縁に形成された鋭角辺である。切刃背端１３は他側の切屑排出溝１１の他の辺縁に形成された鈍角辺である。粗切削段１４は複数の凹溝１５および小切刃１６を有し、複数の凹溝１５は切刃１０の外周壁に間隔をあけて配列され、一端は切刃端１２まで貫通する。複数の小切刃１６は二つの隣合う凹溝１５間にそれぞれ形成される。精密切削段１７には凹溝が設けられず、精密切削段１７の位置は隣合う切刃１０上の粗切削段１４の位置に対応する。
【選択図】図１[PROBLEMS] To increase the cutting amount, cutting speed and service life of an end mill.
A plurality of spiral cutting blades 10 are annularly arranged on the circumference, and a chip discharge groove 11 is formed between adjacent cutting blades 10. Each cutting edge 10 includes a cutting edge 12, a cutting edge back end 13, a rough cutting stage 14, and a precision cutting stage 17. The cutting edge 12 is an acute side formed on one side edge of the chip discharge groove 11 on one side. The cutting blade back end 13 is an obtuse angle side formed at the other edge of the chip discharge groove 11 on the other side. The rough cutting stage 14 has a plurality of concave grooves 15 and small cutting edges 16. The plurality of concave grooves 15 are arranged at intervals on the outer peripheral wall of the cutting edge 10, and one end penetrates to the cutting edge 12. The plurality of small cutting edges 16 are respectively formed between two adjacent concave grooves 15. The precision cutting stage 17 is not provided with a concave groove, and the position of the precision cutting stage 17 corresponds to the position of the rough cutting stage 14 on the adjacent cutting edge 10.
[Selection] Figure 1

Description

本考案はエンドミルの構造に関し、特に、切り込み量、切り込み速度および使用寿命を高めることができるエンドミルの構造に関する。 The present invention relates to a structure of an end mill, and more particularly to a structure of an end mill that can increase a cutting amount, a cutting speed, and a service life.

一般によく見られる従来技術によるエンドミルの構造は、図１３から図１６に示すように、四本の螺旋状の切刃４０を有し、各隣合う切刃４０間には切屑排出溝４１が形成され、切刃４０一側の切屑排出溝４１の一辺縁には鋭角辺である切刃端４２が設けられてフライス切削を行い、切刃４０の他側の切屑排出溝４１の他の辺縁には鈍角辺である切刃背端４３が形成される。 As shown in FIGS. 13 to 16, the structure of a conventional end mill that is generally well-known has four spiral cutting blades 40, and a chip discharge groove 41 is formed between the adjacent cutting blades 40. A cutting edge 42 that is an acute angle side is provided on one edge of the chip discharge groove 41 on the one side of the cutting edge 40 to perform milling, and the other edge of the chip discharge groove 41 on the other side of the cutting edge 40. The cutting edge back end 43 which is an obtuse angle side is formed.

従来技術によるエンドミルが有する切刃４０の切刃端４２は滑らかな螺旋状を呈するので、エンドミルがフライス加工を行なうとき、切り込み量および切り込み速度を過大にすることはできず、そうした場合、エンドミルが断裂したり、切削時に発生する切屑が切屑排出溝４１内に堆積して排出されない状況が発生する。一旦このような状況なると、高温の切屑が切刃端４２の温度を急速に上昇させ、エンドミルが断裂してしまうので、使用寿命が大幅に短縮されてしまい、また、切屑排出溝４１内に堆積した切屑が加工面と接触して加工面が摩損し、加工面の平坦度が影響を受けてしまう。 Since the cutting edge 42 of the cutting edge 40 of the conventional end mill has a smooth spiral shape, when the end mill performs milling, the cutting amount and the cutting speed cannot be excessive. There arises a situation in which tearing or chips generated during cutting accumulate in the chip discharge groove 41 and are not discharged. Once this situation occurs, the high-temperature chips rapidly raise the temperature of the cutting edge 42 and the end mill is torn, so that the service life is greatly shortened, and the chips are accumulated in the chip discharge groove 41. The cut chips come into contact with the processing surface and the processing surface is worn away, and the flatness of the processing surface is affected.

従って、本考案の考案者は上述の従来技術によるエンドミルの構造の欠点を解決するために研究を重ね、ついに本考案を案出した。
特開２００８−８０４４１号公報 Therefore, the inventor of the present invention has conducted research in order to solve the above-described drawbacks of the structure of the end mill according to the prior art, and finally devised the present invention.
JP 2008-80441 A

本考案の課題は、切り込み量、切り込み速度および使用寿命を大幅に高めることができるエンドミルの構造を提供することにある。 An object of the present invention is to provide an end mill structure that can greatly increase the cutting amount, the cutting speed, and the service life.

上述の目的を解決するために、本考案によるエンドミルの構造は、複数の螺旋状の切刃が円周上に環状に配列され、各隣合う切刃間には切屑排出溝が形成される。各切刃は切刃端、切刃背端、粗切削段および精密切削段を備える。切刃端は一側の切屑排出溝の一辺縁に形成された鋭角辺である。切刃背端は他側の切屑排出溝の他の辺縁に形成された鈍角辺である。粗切削段は複数の凹溝および小切刃を有し、複数の凹溝は切刃の外周壁に間隔をあけて配列され、一端は切刃端まで貫通する。複数の小切刃は二つの隣合う凹溝間にそれぞれ形成される。精密切削段には凹溝が設けられず、精密切削段の位置は隣合う切刃上の粗切削段の位置に対応する。
本考案は、下記の特徴を有する。
（１）複数の螺旋状の切刃が円周上に環状に配列され、各隣合う前記切刃間には切屑排出溝が形成され、各切刃は、
一側の切屑排出溝の一辺縁に形成された鋭角辺である切刃端と、
他側の切屑排出溝の他の辺縁に形成された鈍角辺である切刃背端と、
複数の凹溝および小切刃を有し、前記複数の凹溝は前記切刃の外周壁に間隔をあけて配列され、一端は切刃端まで貫通し、前記複数の小切刃は二つの隣合う凹溝間にそれぞれ形成される粗切削段と、
凹溝が設けられず、設置位置が隣合う切刃上の粗切削段の位置に対応する精密切削段と、を備えることを特徴とするエンドミルの構造。
（２）前記凹溝の他端は、切刃背端まで貫通することを特徴とする（１）記載のエンドミルの構造。
（３）四本の切刃を有し、第１の切刃の粗切削段は上半部に設けられ、精密切削段は下半部に設けられ、第２の切刃の粗切削段は下半部に設けられ、精密切削段は上半部に設けられ、第３の切刃の粗切削段は上半部に設けられ、精密切削段は下半部に設けられ、第４の切刃の粗切削段は下半部に設けられ、精密切削段は上半部に設けられることを特徴とする（１）または（２）記載のエンドミルの構造。
（４）前記各切刃上には螺旋溝が設けられ、前記螺旋溝は前記切屑排出溝と平行であり、前記切刃を二つの平行で螺旋状の粗切削段と精密切削段とに分割し、前記粗切削段は前記切刃端に近く、前記複数の凹溝は粗切削段全体に間隔をあけて配列され、前記精密切削段は前記切刃背端に近いことを特徴とする（１）記載のエンドミルの構造。
（５）前記凹溝の他端は、前記螺旋溝まで貫通することを特徴とする（４）記載のエンドミルの構造。
（６）前記エンドミルの構造は、三本の切刃を有することを特徴とする（４）または（５）記載のエンドミルの構造。
（７）複数の螺旋状の切刃が円周上に環状に配列され、各隣合う二本の切刃間には切屑排出溝が形成され、各切刃は、切刃端および切刃背端を備え、前記切刃端は一側の切屑排出溝の一辺縁に形成された鋭角辺であり、前記切刃背端は他側の切屑排出溝の他の辺縁に形成された鈍角辺であり、
前記切刃の外周壁上には複数の凹溝が間隔をあけて配列され、前記切刃と隣合う切刃上には凹溝が設けられず、前記複数の凹溝は外周壁全体に間隔をあけて分布され、凹溝の一端は前記切刃端まで貫通し、各隣合う凹溝間には小切刃がそれぞれ形成されることを特徴とするエンドミルの構造。
（８）前記エンドミルの構造は、二本の切刃を有し、その中の一本の切刃上には凹溝が設けられ、他の切刃上には凹溝が設けられないことを特徴とする（７）記載のエンドミルの構造。
（９）前記エンドミルの構造には、四本の切刃が環状に配列され、第１の切刃には凹溝が設けられ、第２の切刃には凹溝が設けられず、第３の切刃には凹溝が設けられ、第４の切刃には凹溝が設けられないことを特徴とする（７）記載のエンドミルの構造。
（１０）前記凹溝の他端は、切刃背端まで貫通することを特徴とする（７）、（８）または（９）のいずれか記載のエンドミルの構造。 In order to solve the above-mentioned object, in the structure of the end mill according to the present invention, a plurality of spiral cutting blades are arranged in an annular shape on the circumference, and a chip discharge groove is formed between the adjacent cutting blades. Each cutting edge includes a cutting edge, a cutting edge back end, a rough cutting stage and a precision cutting stage. The cutting edge is an acute side formed on one side edge of the chip discharge groove on one side. The back edge of the cutting edge is an obtuse angle side formed on the other edge of the chip discharge groove on the other side. The rough cutting stage has a plurality of concave grooves and small cutting edges, the plurality of concave grooves are arranged at intervals on the outer peripheral wall of the cutting edge, and one end penetrates to the cutting edge. The plurality of small cutting edges are respectively formed between two adjacent concave grooves. The precision cutting stage is not provided with a concave groove, and the position of the precision cutting stage corresponds to the position of the rough cutting stage on the adjacent cutting edge.
The present invention has the following features.
(1) A plurality of spiral cutting blades are annularly arranged on the circumference, a chip discharge groove is formed between the adjacent cutting blades,
A cutting edge that is an acute side formed on one edge of the chip discharge groove on one side;
A cutting blade back end that is an obtuse angle formed on the other edge of the other-side chip discharge groove,
A plurality of concave grooves and a small cutting edge, wherein the plurality of concave grooves are arranged at intervals on an outer peripheral wall of the cutting edge, one end penetrates to the cutting edge, and the plurality of small cutting edges includes two A rough cutting step formed between adjacent grooves,
A structure of an end mill, comprising: a precision cutting stage corresponding to a position of a rough cutting stage on a cutting blade that is not provided with a concave groove and whose installation position is adjacent.
(2) The end mill structure according to (1), wherein the other end of the concave groove penetrates to the back end of the cutting blade.
(3) It has four cutting edges, the rough cutting stage of the first cutting edge is provided in the upper half, the precision cutting stage is provided in the lower half, and the rough cutting stage of the second cutting edge is Provided in the lower half, the precision cutting step is provided in the upper half, the rough cutting step of the third cutting edge is provided in the upper half, the precision cutting step is provided in the lower half, and the fourth cutting step The structure of the end mill according to (1) or (2), wherein the rough cutting step of the blade is provided in the lower half and the precision cutting step is provided in the upper half.
(4) A spiral groove is provided on each cutting edge, the spiral groove is parallel to the chip discharge groove, and the cutting edge is divided into two parallel and spiral rough cutting stages and a precision cutting stage. The rough cutting step is close to the edge of the cutting edge, the plurality of grooves are arranged at intervals over the entire rough cutting step, and the precision cutting step is close to the cutting edge back end ( 1) The structure of the end mill as described.
(5) The structure of the end mill according to (4), wherein the other end of the concave groove penetrates to the spiral groove.
(6) The structure of the end mill according to (4) or (5), wherein the structure of the end mill has three cutting edges.
(7) A plurality of spiral cutting blades are arranged in an annular shape on the circumference, and a chip discharge groove is formed between each two adjacent cutting blades. Each cutting blade has a cutting edge and a cutting blade back. The cutting edge is an acute edge formed on one edge of the chip discharge groove on one side, and the back edge of the cutting edge is an obtuse edge formed on the other edge of the chip discharge groove on the other side. And
A plurality of concave grooves are arranged at intervals on the outer peripheral wall of the cutting blade, no concave grooves are provided on the cutting blade adjacent to the cutting blade, and the plurality of concave grooves are spaced across the entire outer peripheral wall. The structure of the end mill is characterized in that one end of the groove is distributed to the edge of the cutting edge, and a small cutting edge is formed between each adjacent groove.
(8) The structure of the end mill has two cutting edges, a groove is provided on one of the cutting edges, and a groove is not provided on the other cutting edge. The structure of the end mill described in (7), which is characterized.
(9) In the structure of the end mill, four cutting blades are arranged in an annular shape, the first cutting blade is provided with a concave groove, the second cutting blade is not provided with a concave groove, The end mill structure according to (7), wherein the cutting blade is provided with a concave groove, and the fourth cutting blade is not provided with a concave groove.
(10) The end mill structure according to any one of (7), (8), and (9), wherein the other end of the concave groove penetrates to the cutting blade back end.

本考案は、粗切削段の複数の小切刃が切屑を切断することによって迅速な切屑の排出および負荷の大きい切削を達成し、それによって切り込み量、切り込み速度および使用寿命を大幅に高めることができ、精密切削段によって粗切削段が切削した平面を更に精密に切削し、滑らかな加工面にすることができる。 The present invention achieves rapid chip discharge and high-load cutting by cutting multiple chips with multiple cutting edges in the rough cutting stage, thereby greatly increasing the cutting amount, cutting speed and service life. In addition, the plane cut by the rough cutting stage can be cut more precisely by the precision cutting stage to obtain a smooth machined surface.

本考案の目的、特徴および効果を示す実施例を図に沿って詳細に説明する。 Embodiments showing the objects, features, and effects of the present invention will be described in detail with reference to the drawings.

図１から図４は本考案のエンドミルの構造の第１の実施例を示し、四本の螺旋状の切刃１０が円周上に環状に配列され、各隣合う切刃１０間には切屑排出溝１１が形成される。 1 to 4 show a first embodiment of the structure of an end mill according to the present invention, in which four spiral cutting blades 10 are arranged in an annular shape on the circumference, and chips are disposed between adjacent cutting blades 10. A discharge groove 11 is formed.

各切刃は、一側の切屑排出溝１１の一辺縁に形成された鋭角辺である切刃端１２と、他側の切屑排出溝１１の他の辺縁に形成された鈍角辺である切刃背端１３と、複数の凹溝１５および小切刃１６を有し、複数の凹溝１５は切刃１０の外周壁に間隔をあけて配列され、一端は切刃端１２まで貫通し、他端は切刃背端１３まで貫通し、複数の小切刃１６は二つの隣合う凹溝１５間にそれぞれ形成される粗切削段１４と、凹溝１５が設けられず、設置位置が隣合う切刃１０上の粗切削段１４の位置に対応する精密切削段１７と、を備える。 Each cutting edge is a cutting edge 12 that is an acute edge formed on one edge of the chip discharge groove 11 on one side and an obtuse edge formed on the other edge of the chip discharge groove 11 on the other side. The blade back end 13 has a plurality of concave grooves 15 and a small cutting edge 16, and the plurality of concave grooves 15 are arranged at intervals on the outer peripheral wall of the cutting edge 10, and one end penetrates to the cutting edge 12. The other end penetrates to the cutting edge back end 13, and the plurality of small cutting edges 16 are not provided with a rough cutting step 14 formed between two adjacent concave grooves 15, and the concave groove 15, and the installation position is adjacent. A precision cutting step 17 corresponding to the position of the rough cutting step 14 on the matching cutting edge 10.

第１の切刃１０の粗切削段１４は上半部に設けられ、精密切削段１７は下半部に設けられ、第２の切刃１０の粗切削段１４は下半部に設けられ、精密切削段１７は上半部に設けられ、第３の切刃１０の粗切削段１４は上半部に設けられ、精密切削段１７は下半部に設けられ、第４の切刃１０の粗切削段１４は下半部に設けられ、精密切削段１７は上半部に設けられる。 The rough cutting stage 14 of the first cutting edge 10 is provided in the upper half, the precision cutting stage 17 is provided in the lower half, and the rough cutting stage 14 of the second cutting edge 10 is provided in the lower half. The precision cutting stage 17 is provided in the upper half, the rough cutting stage 14 of the third cutting edge 10 is provided in the upper half, the precision cutting stage 17 is provided in the lower half, and the fourth cutting edge 10 The rough cutting step 14 is provided in the lower half, and the precision cutting step 17 is provided in the upper half.

エンドミルが回転したとき、切刃１０上の粗切削段１４の複数の小切刃１６が切屑を切断することによって迅速な切削粉の排出および負荷の大きい切削を達成し、それによって切り込み量、切り込み速度および使用寿命を大幅に高めることができ、精密切削段１７によって粗切削段１４が切削した平面を更に精密に切削し、滑らかな加工面にすることができる。 When the end mill rotates, the plurality of small cutting edges 16 of the rough cutting stage 14 on the cutting edge 10 cuts the chips to achieve quick discharge of cutting powder and heavy cutting, thereby cutting depth and cutting depth. The speed and service life can be greatly increased, and the plane cut by the rough cutting stage 14 by the precision cutting stage 17 can be cut more precisely to obtain a smooth machined surface.

図５から図８は本考案の第２の実施例を示し、三本の螺旋状の切刃２０が円周上に環状に配列され、各隣合う切刃２０間には切屑排出溝２１が形成される。各切刃２０は、切刃端２２、切刃背端２３、螺旋溝２４、粗切削段２５および精密切削段２６を備える。 5 to 8 show a second embodiment of the present invention, in which three spiral cutting blades 20 are annularly arranged on the circumference, and a chip discharge groove 21 is provided between each adjacent cutting blade 20. It is formed. Each cutting edge 20 includes a cutting edge 22, a cutting edge back end 23, a spiral groove 24, a rough cutting stage 25, and a precision cutting stage 26.

切刃端２２は一側の切屑排出溝２１の一辺縁に形成された鋭角辺である。切刃背端２３は他側の切屑排出溝２１の他の辺縁に形成された鈍角辺である。螺旋溝２４は切屑排出溝２１と平行であり、切刃２０を二つの平行で螺旋状の粗切削段２５と精密切削段２６とに分割する。粗切削段２５は切刃端２２に近く、複数の凹溝２７および小切刃２８を有し、複数の凹溝２７は粗切削段２５の外周壁全体に間隔をあけて配列され、凹溝２７の一端は切刃端２２まで貫通し、他端は螺旋溝２４まで貫通する。精密切削段２６は切刃背端２３に近く、凹溝が設けられない。 The cutting edge 22 is an acute side formed on one side edge of the chip discharge groove 21 on one side. The cutting edge back end 23 is an obtuse angle side formed on the other edge of the chip discharge groove 21 on the other side. The spiral groove 24 is parallel to the chip discharge groove 21 and divides the cutting edge 20 into two parallel and spiral rough cutting stages 25 and a precision cutting stage 26. The rough cutting stage 25 is close to the cutting edge 22 and has a plurality of concave grooves 27 and small cutting edges 28, and the plurality of concave grooves 27 are arranged at intervals on the entire outer peripheral wall of the rough cutting stage 25. One end of 27 penetrates to the cutting edge 22 and the other end penetrates to the spiral groove 24. The precision cutting stage 26 is close to the cutting edge back end 23 and is not provided with a concave groove.

エンドミルが回転したとき、切刃２０上の粗切削段２５が被加工物に対して粗いフライス加工を行ない、その後、精密切削段２６によって粗切削段２５が切削した平面を更に精密に切削し、滑らかな加工面にすることができる。 When the end mill rotates, the rough cutting step 25 on the cutting edge 20 performs rough milling on the workpiece, and then the plane cut by the rough cutting step 25 is further precisely cut by the precision cutting step 26, A smooth machined surface can be obtained.

図９から図１２は本考案の第３の実施例を示し、二本の螺旋状の切刃３０が円周上に環状に配列され、二本の切刃３０間には二本の切屑排出溝３１が形成される。各切刃３０は、切刃端３２および切刃背端３３を備える。 9 to 12 show a third embodiment of the present invention, in which two spiral cutting blades 30 are annularly arranged on the circumference, and two chips are discharged between the two cutting blades 30. FIG. A groove 31 is formed. Each cutting edge 30 includes a cutting edge 32 and a cutting edge back end 33.

切刃端３２は一側の切屑排出溝３１の一辺縁に形成された鋭角辺である。切刃背端３３は他側の切屑排出溝３１の他の辺縁に形成された鈍角辺である。第１の切刃３０の外周壁上には複数の凹溝３４が間隔をあけて配列され、第２の切刃３０上には凹溝が設けられない。第１の切刃３０上の複数の凹溝３４は外周壁全体に間隔をあけて分布され、凹溝３４の一端は切刃端３２まで貫通し、他端は切刃背端３３まで貫通する。各隣合う凹溝３４間には小切刃３５がそれぞれ形成される。 The cutting edge 32 is an acute side formed on one side edge of the chip discharge groove 31 on one side. The cutting blade back end 33 is an obtuse angle side formed on the other edge of the other chip discharge groove 31. A plurality of concave grooves 34 are arranged on the outer peripheral wall of the first cutting edge 30 at intervals, and no concave grooves are provided on the second cutting edge 30. The plurality of concave grooves 34 on the first cutting edge 30 are distributed over the entire outer peripheral wall, with one end of the concave groove 34 extending to the cutting edge 32 and the other end extending to the cutting edge back end 33. . A small cutting edge 35 is formed between each adjacent concave groove 34.

エンドミルが回転したとき、第１の切刃３０上の複数の小切刃３５が被加工物に対して粗いフライス加工を行ない、その後、第２の切刃３０によって第１の粗切刃３０が切削した平面を更に精密に切削し、滑らかな加工面にすることができる。 When the end mill rotates, the plurality of small cutting edges 35 on the first cutting edge 30 perform rough milling on the workpiece, and then the second cutting edge 30 causes the first rough cutting edge 30 to move. The cut plane can be cut more precisely to make a smooth machined surface.

当然、第３の実施例は四本以上の切刃を有するエンドミルの構造上に応用することができる。例えば、四本の切刃を有するエンドミルの構造において、第１の切刃には凹溝が設けられ、第２の切刃には凹溝が設けられず、第３の切刃には凹溝が設けられ、第４の切刃には凹溝が設けられない構造にすることができる。その他の四本以上の切刃を有するエンドミルの構造も上述の構造と同一にすることができ、更なる説明は行わない。 Naturally, the third embodiment can be applied to the structure of an end mill having four or more cutting edges. For example, in an end mill structure having four cutting edges, the first cutting edge is provided with a concave groove, the second cutting edge is not provided with a concave groove, and the third cutting edge is provided with a concave groove. Can be provided, and the fourth cutting edge can be provided with no groove. The structure of the other end mill having four or more cutting edges can be the same as that described above, and will not be described further.

上述のように、本考案は産業上の利用性および進歩性を有し、未だに公開されていない考案である。 As described above, the present invention has industrial applicability and inventive step, and has not yet been disclosed.

本考案の第１の実施例を示す斜視図である。1 is a perspective view showing a first embodiment of the present invention. 本考案の第１の実施例を示す正面図である。1 is a front view showing a first embodiment of the present invention. 本考案の第１の実施例を示す右側面図である。It is a right view which shows the 1st Example of this invention. 本考案の第１の実施例を示す上面図である。It is a top view which shows the 1st Example of this invention. 本考案の第２の実施例を示す斜視図である。It is a perspective view which shows the 2nd Example of this invention. 本考案の第２の実施例を示す正面図である。It is a front view which shows the 2nd Example of this invention. 本考案の第２の実施例を示す右側面図である。It is a right view which shows the 2nd Example of this invention. 本考案の第２の実施例を示す上面図である。It is a top view which shows the 2nd Example of this invention. 本考案の第３の実施例を示す斜視図である。It is a perspective view which shows the 3rd Example of this invention. 本考案の第３の実施例を示す正面図である。It is a front view which shows the 3rd Example of this invention. 本考案の第３の実施例を示す右側面図である。It is a right view which shows the 3rd Example of this invention. 本考案の第３の実施例を示す上面図である。It is a top view which shows the 3rd Example of this invention. 従来技術のエンドミルの構造を示す斜視図である。It is a perspective view which shows the structure of the prior art end mill. 従来技術のエンドミルの構造を示す正面図である。It is a front view which shows the structure of the end mill of a prior art. 従来技術のエンドミルの構造を示す右側面図である。It is a right view which shows the structure of the prior art end mill. 従来技術のエンドミルの構造を示す上面図である。It is a top view which shows the structure of the end mill of a prior art.

符号の説明Explanation of symbols

１０、２０、３０ 切刃
１１、２１、３１ 切屑排出溝
１２、２２、３２ 切刃端
１３、２３、３３ 切刃背端
１４、２５ 粗切削段
１５、２７、３４ 凹溝
１６、２８、３５ 小切刃
１７、２６ 精密切削段
２４ 螺旋溝 10, 20, 30 Cutting edge 11, 21, 31 Chip discharge groove 12, 22, 32 Cutting edge end 13, 23, 33 Cutting edge back end 14, 25 Rough cutting step 15, 27, 34 Groove 16, 28, 35 Cutting edge 17, 26 Precision cutting step 24 Spiral groove

Claims (10)

複数の螺旋状の切刃が円周上に環状に配列され、各隣合う前記切刃間には切屑排出溝が形成され、各切刃は、
一側の切屑排出溝の一辺縁に形成された鋭角辺である切刃端と、
他側の切屑排出溝の他の辺縁に形成された鈍角辺である切刃背端と、
複数の凹溝および小切刃を有し、前記複数の凹溝は前記切刃の外周壁に間隔をあけて配列され、一端は切刃端まで貫通し、前記複数の小切刃は二つの隣合う凹溝間にそれぞれ形成される粗切削段と、
凹溝が設けられず、設置位置が隣合う切刃上の粗切削段の位置に対応する精密切削段と、を備えることを特徴とするエンドミルの構造。 A plurality of spiral cutting blades are annularly arranged on the circumference, a chip discharge groove is formed between each adjacent cutting blade,
A cutting edge that is an acute side formed on one edge of the chip discharge groove on one side;
A cutting blade back end that is an obtuse angle formed on the other edge of the other-side chip discharge groove,
A plurality of concave grooves and a small cutting edge, wherein the plurality of concave grooves are arranged at intervals on an outer peripheral wall of the cutting edge, one end penetrates to the cutting edge, and the plurality of small cutting edges includes two A rough cutting step formed between adjacent grooves,
A structure of an end mill, comprising: a precision cutting stage corresponding to a position of a rough cutting stage on a cutting blade that is not provided with a concave groove and whose installation position is adjacent. 前記凹溝の他端は、切刃背端まで貫通することを特徴とする請求項１記載のエンドミルの構造。   The end mill structure according to claim 1, wherein the other end of the concave groove penetrates to the back end of the cutting blade. 四本の切刃を有し、第１の切刃の粗切削段は上半部に設けられ、精密切削段は下半部に設けられ、第２の切刃の粗切削段は下半部に設けられ、精密切削段は上半部に設けられ、第３の切刃の粗切削段は上半部に設けられ、精密切削段は下半部に設けられ、第４の切刃の粗切削段は下半部に設けられ、精密切削段は上半部に設けられることを特徴とする請求項１または２記載のエンドミルの構造。 It has four cutting edges, the rough cutting step of the first cutting blade is provided in the upper half, the precision cutting step is provided in the lower half, and the rough cutting step of the second cutting blade is the lower half. The precision cutting step is provided in the upper half, the rough cutting step of the third cutting edge is provided in the upper half, the precision cutting step is provided in the lower half, and the rough cutting step of the fourth cutting edge is provided. The structure of the end mill according to claim 1 or 2, wherein the cutting step is provided in the lower half and the precision cutting step is provided in the upper half. 前記各切刃上には螺旋溝が設けられ、前記螺旋溝は前記切屑排出溝と平行であり、前記切刃を二つの平行で螺旋状の粗切削段と精密切削段とに分割し、前記粗切削段は前記切刃端に近く、前記複数の凹溝は粗切削段全体に間隔をあけて配列され、前記精密切削段は前記切刃背端に近いことを特徴とする請求項１記載のエンドミルの構造。 A spiral groove is provided on each of the cutting edges, the spiral groove is parallel to the chip discharge groove, and the cutting edge is divided into two parallel and spiral rough cutting stages and a precision cutting stage, The rough cutting step is close to the cutting edge, the plurality of concave grooves are arranged at intervals in the entire rough cutting step, and the precision cutting step is close to the cutting edge back end. End mill structure. 前記凹溝の他端は、前記螺旋溝まで貫通することを特徴とする請求項４記載のエンドミルの構造。   The end mill structure according to claim 4, wherein the other end of the concave groove penetrates to the spiral groove. 前記エンドミルの構造は、三本の切刃を有することを特徴とする請求項４または５記載のエンドミルの構造。   The structure of the end mill according to claim 4 or 5, wherein the structure of the end mill has three cutting edges. 複数の螺旋状の切刃が円周上に環状に配列され、各隣合う二本の切刃間には切屑排出溝が形成され、各切刃は、切刃端および切刃背端を備え、前記切刃端は一側の切屑排出溝の一辺縁に形成された鋭角辺であり、前記切刃背端は他側の切屑排出溝の他の辺縁に形成された鈍角辺であり、
前記切刃の外周壁上には複数の凹溝が間隔をあけて配列され、前記切刃と隣合う切刃上には凹溝が設けられず、前記複数の凹溝は外周壁全体に間隔をあけて分布され、凹溝の一端は前記切刃端まで貫通し、各隣合う凹溝間には小切刃がそれぞれ形成されることを特徴とするエンドミルの構造。 A plurality of spiral cutting edges are arranged in an annular shape on the circumference, and a chip discharge groove is formed between each two adjacent cutting edges. Each cutting edge has a cutting edge and a cutting edge back end. The cutting edge is an acute side formed on one side of the chip discharge groove on one side, and the back end of the cutting edge is an obtuse side formed on the other side of the chip discharge groove on the other side,
A plurality of concave grooves are arranged at intervals on the outer peripheral wall of the cutting blade, no concave grooves are provided on the cutting blade adjacent to the cutting blade, and the plurality of concave grooves are spaced across the entire outer peripheral wall. The structure of the end mill is characterized in that one end of the groove is distributed to the edge of the cutting edge, and a small cutting edge is formed between each adjacent groove. 前記エンドミルの構造は、二本の切刃を有し、その中の一本の切刃上には凹溝が設けられ、他の切刃上には凹溝が設けられないことを特徴とする請求項７記載のエンドミルの構造。   The structure of the end mill has two cutting edges, a groove is provided on one of the cutting edges, and a groove is not provided on the other cutting edge. The structure of the end mill of Claim 7. 前記エンドミルの構造には、四本の切刃が環状に配列され、第１の切刃には凹溝が設けられ、第２の切刃には凹溝が設けられず、第３の切刃には凹溝が設けられ、第４の切刃には凹溝が設けられないことを特徴とする請求項７記載のエンドミルの構造。   In the structure of the end mill, four cutting edges are arranged in an annular shape, the first cutting edge is provided with a concave groove, the second cutting edge is not provided with a concave groove, and the third cutting edge is provided. 8. The structure of the end mill according to claim 7, wherein a concave groove is provided on the fourth cutting edge, and no concave groove is provided on the fourth cutting edge. 前記凹溝の他端は、切刃背端まで貫通することを特徴とする請求項７、８または９のいずれか記載のエンドミルの構造。   The end mill structure according to any one of claims 7, 8 and 9, wherein the other end of the concave groove penetrates to the back end of the cutting edge.
JP2008005052U 2008-07-23 2008-07-23 End mill structure Expired - Fee Related JP3145277U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109551029A (en) * 2019-01-16 2019-04-02 金富中 A kind of coarse-fine integrated milling cutter
CN110052655A (en) * 2019-05-27 2019-07-26 金富中 A kind of drill mill of end sword not equal part angle
WO2022113358A1 (en) * 2020-11-30 2022-06-02 オーエスジー株式会社 End mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109551029A (en) * 2019-01-16 2019-04-02 金富中 A kind of coarse-fine integrated milling cutter
CN110052655A (en) * 2019-05-27 2019-07-26 金富中 A kind of drill mill of end sword not equal part angle
WO2022113358A1 (en) * 2020-11-30 2022-06-02 オーエスジー株式会社 End mill
JP7497459B2 (en) 2020-11-30 2024-06-10 オーエスジー株式会社 End Mills

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