JP2017202557A - Cutting tool - Google Patents

Cutting tool Download PDF

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JP2017202557A
JP2017202557A JP2016096826A JP2016096826A JP2017202557A JP 2017202557 A JP2017202557 A JP 2017202557A JP 2016096826 A JP2016096826 A JP 2016096826A JP 2016096826 A JP2016096826 A JP 2016096826A JP 2017202557 A JP2017202557 A JP 2017202557A
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cutting edge
pedestal
cutting
concave portion
cutting tool
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圭佑 村山
Keisuke Murayama
圭佑 村山
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Denso Corp
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Denso Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a cutting tool capable of restraining separation of a cutting edge from a pedestal caused by shear force.SOLUTION: A cutting tool 10 comprises a pedestal 20 and a cutting edge 30. The pedestal 20 is constituted of hard metal. The cutting edge 30 is constituted of monocrystal silicon carbide, and is joined to the pedestal 20 by brazing. A recessed part is formed on a joining surface 23 of the pedestal 20. A projection part fitted to the recessed part of the pedestal 20 is formed on a joining surface 31 of the cutting edge 30. The recessed part and the projection part contact in the plane direction parallel to the respective joining surfaces 23 and 31 of the pedestal and the cutting edge, and also contact in the rotational direction around a normal line vertical to the respective joining surfaces 23 and 31 of the pedestal and the cutting edge.SELECTED DRAWING: Figure 1

Description

本発明は、単結晶炭化珪素の切れ刃を備える切削工具に関する。   The present invention relates to a cutting tool including a single crystal silicon carbide cutting edge.

従来、この種の切削工具としては、特許文献１に記載の切削工具がある。特許文献１に記載の切削工具は、超硬合金等により構成される台座と、単結晶炭化珪素により構成される切れ刃とを備えている。切れ刃は、台座のコーナ部に接着により接合されている。   Conventionally, as this type of cutting tool, there is a cutting tool described in Patent Document 1. The cutting tool described in Patent Literature 1 includes a pedestal made of cemented carbide or the like and a cutting edge made of single crystal silicon carbide. The cutting edge is bonded to the corner portion of the base by bonding.

また、台座と切れ刃との接合方法としては、例えば特許文献２に記載の方法がある。特許文献２に記載の接合方法では、台座の接合面に円形状又は線状の凹部が形成されている。切れ刃には、台座の凹部に嵌合する円形状又は線状の凸部が形成されている。切れ刃及び台座のそれぞれの接合面は、ろう付けにより固定されている。   Moreover, as a joining method of a base and a cutting edge, there exists a method of patent document 2, for example. In the joining method described in Patent Document 2, a circular or linear recess is formed on the joining surface of the pedestal. The cutting blade is formed with a circular or linear convex portion that fits into the concave portion of the pedestal. The joining surfaces of the cutting edge and the pedestal are fixed by brazing.

特開２００８−２２９８３６号公報JP 2008-229836 A 特開昭６１−１９７１２１号公報JP-A-61-197121

ところで、単結晶炭化珪素により構成される切れ刃と、超硬合金により構成される台座とをろう付けにより接合する場合、単結晶炭化珪素の濡れ性の悪さに起因して、切れ刃と台座との接合強度を確保できないおそれがある。   By the way, when joining a cutting edge composed of single crystal silicon carbide and a pedestal composed of cemented carbide by brazing, due to the poor wettability of single crystal silicon carbide, There is a possibility that the bonding strength of the material cannot be secured.

一方、それらの接合強度を確保するために、特許文献２に記載されるように、台座及び切れ刃のそれぞれの接合面に凹凸構造を設けるという方法も考えられる。しかしながら、凹部及び凸部が円形状に形成されている場合、台座及び切れ刃のそれぞれの接合面に垂直な法線を中心とする回転方向の力を凹凸構造で受けることができない。すなわち、円形状の凹凸構造では、上記の回転方向の力に対して接合強度を確保することが困難である。この点、切れ刃によりワークを実際に加工する際、切れ刃には、台座及び切れ刃のそれぞれの接合面に平行な方向の力、すなわちせん断方向の力が加わる。このせん断力には上記の回転方向成分の力が含まれている場合があるため、大きなせん断力が切れ刃に加わると、台座から切れ刃が剥離するおそれがある。   On the other hand, in order to ensure their bonding strength, a method of providing a concavo-convex structure on each bonding surface of the pedestal and the cutting edge as described in Patent Document 2 is also conceivable. However, when the concave portion and the convex portion are formed in a circular shape, the concave-convex structure cannot receive a force in the rotational direction centering on the normal line perpendicular to the joint surfaces of the base and the cutting edge. In other words, it is difficult for the circular concavo-convex structure to secure bonding strength against the force in the rotational direction. In this respect, when the workpiece is actually machined with the cutting edge, a force in a direction parallel to the joint surfaces of the base and the cutting edge, that is, a force in the shearing direction is applied to the cutting edge. Since this shearing force may include a force in the rotational direction component described above, if a large shearing force is applied to the cutting edge, the cutting edge may peel off from the pedestal.

また、凹部及び凸部が線状に形成されている場合、台座及び切れ刃のそれぞれの接合面に平行であって、且つ凹部及び凸部の延びる方向に平行な平面方向の力を凹凸嵌合構造で受けることができない。すなわち、線状の凹凸嵌合構造では、上記の平面方向の力に対して接合強度を確保することが困難である。この点、切れ刃によりワークを実際に加工する際、切れ刃に加わるせん断力には上記の平面方向成分の力が含まれている場合があるため、大きなせん断力が切れ刃に加わると、同様に台座から切れ刃が剥離するおそれがある。   In addition, when the concave and convex portions are formed in a linear shape, the force in the plane direction parallel to the joint surfaces of the pedestal and the cutting edge and parallel to the extending direction of the concave and convex portions is concave and convex. It cannot be received by structure. That is, it is difficult to ensure the bonding strength with respect to the force in the planar direction in the linear uneven fitting structure. In this regard, when the workpiece is actually machined with the cutting edge, the shear force applied to the cutting edge may include the force in the above-mentioned plane direction component. In addition, the cutting edge may be peeled off from the base.

本発明は、こうした実情に鑑みてなされたものであり、その目的は、せん断力に起因する台座からの切れ刃の剥離を抑制することのできる切削工具を提供することにある。   This invention is made | formed in view of such a situation, The objective is to provide the cutting tool which can suppress peeling of the cutting blade from the base resulting from a shearing force.

上記課題を解決するために、切削工具（１０）は、台座（２０）と、切れ刃（３０）とを備えている。台座は、超硬合金により構成されている。切れ刃は、単結晶炭化珪素により構成され、台座にろう付けにより接合されている。台座及び切れ刃のそれぞれの接合面のいずれか一方には、凹部（２４）が形成されている。台座及び切れ刃のそれぞれの接合面のいずれか他方には、凹部に嵌合する凸部（３３）が形成されされている。凹部及び凸部は、台座及び切れ刃のそれぞれの接合面に平行な平面方向に接触し、且つ台座及び切れ刃のそれぞれの接合面に垂直な法線を中心とする回転方向に接触している。   In order to solve the above problems, the cutting tool (10) includes a pedestal (20) and a cutting edge (30). The pedestal is made of cemented carbide. The cutting edge is made of single crystal silicon carbide, and is joined to the pedestal by brazing. A concave portion (24) is formed on one of the joint surfaces of the base and the cutting edge. A convex portion (33) that fits into the concave portion is formed on the other of the joint surfaces of the base and the cutting edge. The concave portion and the convex portion are in contact with a plane direction parallel to the joint surfaces of the pedestal and the cutting edge, and are in contact with a rotation direction centered on a normal line perpendicular to the joint surfaces of the pedestal and the cutting edge. .

この構成によれば、切れ刃によりワークを加工する際、切れ刃に加わるせん断力に平面方向成分の力、及び回転方向成分の力が含まれている場合でも、それらの方向成分の力を凹部及び凸部の嵌合構造により受けることができる。すなわち、凹部及び凸部の嵌合構造により、平面方向及び回転方向の接合強度を確保することができる。よって、せん断力に起因する台座からの切れ刃の剥離を抑制することができる。   According to this configuration, when a workpiece is processed by the cutting edge, even if the shear force applied to the cutting edge includes a force in a plane direction component and a force in a rotation direction component, the force in the direction component is recessed. And it can receive by the fitting structure of a convex part. That is, the joint strength in the planar direction and the rotational direction can be ensured by the fitting structure of the concave portion and the convex portion. Therefore, peeling of the cutting edge from the pedestal due to the shearing force can be suppressed.

なお、上記手段、及び特許請求の範囲に記載の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示す一例である。   In addition, the code | symbol in the bracket | parenthesis as described in the said means and a claim is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

本発明によれば、せん断力に起因する台座からの切れ刃の剥離を抑制することのできる切削工具を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the cutting tool which can suppress peeling of the cutting blade from the base resulting from a shearing force can be provided.

図１は、実施形態の切削工具の斜視構造を示す斜視図である。Drawing 1 is a perspective view showing the perspective structure of the cutting tool of an embodiment. 図２は、実施形態の切削工具の切れ刃周辺の拡大構造を示す拡大図である。FIG. 2 is an enlarged view showing an enlarged structure around the cutting edge of the cutting tool of the embodiment. 図３は、実施形態の台座の接合面周辺の拡大構造を示す拡大図である。FIG. 3 is an enlarged view showing an enlarged structure around the joint surface of the pedestal of the embodiment. 図４は、図３の領域Ａの拡大構造を示す拡大図である。FIG. 4 is an enlarged view showing an enlarged structure of region A in FIG. 図５は、実施形態の切れ刃の拡大構造を示す拡大図である。FIG. 5 is an enlarged view showing an enlarged structure of the cutting edge according to the embodiment. 図６は、図５の領域Ｂの拡大構造を示す拡大図である。FIG. 6 is an enlarged view showing an enlarged structure of region B in FIG. 図７は、図２のＶＩＩ−ＶＩＩ線に沿った断面構造を示す断面図である。7 is a cross-sectional view showing a cross-sectional structure along the line VII-VII in FIG. 図８は、図３の領域Ａの拡大構造を示す拡大図である。FIG. 8 is an enlarged view showing an enlarged structure of region A in FIG. 図９は、図５の領域Ｂの拡大構造を示す拡大図である。FIG. 9 is an enlarged view showing an enlarged structure of region B in FIG. 図８は、図３の領域Ａの拡大構造を示す拡大図である。FIG. 8 is an enlarged view showing an enlarged structure of region A in FIG. 図９は、図５の領域Ｂの拡大構造を示す拡大図である。FIG. 9 is an enlarged view showing an enlarged structure of region B in FIG.

以下、切削工具の一実施形態について説明する。はじめに、図１及び図２を参照して、本実施形態の切削工具１０の概略構成について説明する。   Hereinafter, an embodiment of the cutting tool will be described. First, with reference to FIG.1 and FIG.2, schematic structure of the cutting tool 10 of this embodiment is demonstrated.

図１に示されるように、本実施形態の切削工具１０は、台座２０と、切れ刃３０とを備えている。   As shown in FIG. 1, the cutting tool 10 of this embodiment includes a pedestal 20 and a cutting edge 30.

台座２０は、超硬合金により構成されている。台座２０は、軸線ｍの方向に所定の厚さを有している。台座２０の軸線ｍに直交する断面形状は三角形状に形成されている。よって、台座２０は、三角形状の上面２１と底面２２とを有している。台座２０の上面２１に形成された３つの角部のうちの１つの角部には、切れ刃３０が接合されている。以下、台座２０の上面２１において切れ刃３０が接合されている部分を、特に「接合面２３」とも称する。   The base 20 is made of cemented carbide. The pedestal 20 has a predetermined thickness in the direction of the axis m. The cross-sectional shape orthogonal to the axis m of the pedestal 20 is formed in a triangular shape. Therefore, the pedestal 20 has a triangular upper surface 21 and a bottom surface 22. A cutting edge 30 is joined to one of the three corners formed on the upper surface 21 of the base 20. Hereinafter, the portion where the cutting edge 30 is joined on the upper surface 21 of the base 20 is also particularly referred to as a “joint surface 23”.

切れ刃３０は、単結晶炭化珪素により構成されている。切れ刃３０は、軸線ｍの方向に台座２０よりも薄い所定の厚さを有している。図２に示されるように、切れ刃３０の軸線ｍに直交する断面形状は、台座２０の上面２１の角部に対応した三角形状に形成されている。図１に示されるように、切れ刃３０の底面３１は、台座２０の接合面２３に接合されている。以下、切れ刃３０の底面３１を「接合面３１」とも称する。   Cutting edge 30 is made of single crystal silicon carbide. The cutting edge 30 has a predetermined thickness that is thinner than the base 20 in the direction of the axis m. As shown in FIG. 2, the cross-sectional shape perpendicular to the axis m of the cutting edge 30 is formed in a triangular shape corresponding to the corner of the upper surface 21 of the pedestal 20. As shown in FIG. 1, the bottom surface 31 of the cutting edge 30 is joined to the joining surface 23 of the pedestal 20. Hereinafter, the bottom surface 31 of the cutting edge 30 is also referred to as a “joint surface 31”.

この切削工具１０によりワークを切削加工する際には、まず、図１に示される切れ刃３０の一側辺３２をワークに接触させる。この状態でワークに対して切れ刃３０を相対移動させることにより、切れ刃３０の一側辺３２によってワークが切削される。   When cutting a workpiece with the cutting tool 10, first, one side 32 of the cutting edge 30 shown in FIG. 1 is brought into contact with the workpiece. In this state, the workpiece is cut by one side 32 of the cutting edge 30 by moving the cutting edge 30 relative to the workpiece.

次に、図３〜図７を参照して、台座２０の接合面２３と切れ刃３０の接合面３１との接合部分の構造について詳しく説明する。なお、図７は、図２のＶＩＩ−ＶＩＩ線に沿った断面構造を示した断面図である。以下では、台座２０の接合面２３及び切れ刃３０の接合面３１に平行な２軸方向をｘ方向及びｙ方向で表記する。また、台座２０及び切れ刃３０のそれぞれの接合面２３，３１に平行な方向を平面方向ｘ，ｙで表記する。   Next, with reference to FIGS. 3 to 7, the structure of the joint portion between the joint surface 23 of the base 20 and the joint surface 31 of the cutting edge 30 will be described in detail. 7 is a cross-sectional view showing a cross-sectional structure taken along the line VII-VII in FIG. Hereinafter, the biaxial directions parallel to the joint surface 23 of the pedestal 20 and the joint surface 31 of the cutting edge 30 are expressed in the x direction and the y direction. The directions parallel to the joint surfaces 23 and 31 of the pedestal 20 and the cutting edge 30 are represented by plane directions x and y.

図３では、台座２０の上面２１における接合面２３に相当する領域が二点鎖線で囲まれる領域として示されている。図３に示されるように、台座２０の接合面２３の略中央に位置する領域Ａには、図４に示されるように、鋸刃形状の凹部２４が複数形成されている。   In FIG. 3, a region corresponding to the bonding surface 23 on the upper surface 21 of the base 20 is shown as a region surrounded by a two-dot chain line. As shown in FIG. 3, a plurality of saw-tooth shaped recesses 24 are formed in a region A located substantially at the center of the joint surface 23 of the pedestal 20, as shown in FIG. 4.

図５に示されるように、切れ刃３０の接合面３１の略中央に位置する領域Ｂには、図６に示されるように、鋸刃形状の凸部３３が複数形成されている。領域Ｂの大きさは、領域Ａの大きさに等しい。この凸部３３が台座２０の凹部２４に嵌合されることにより、台座２０に対して切れ刃３０が接合されている。   As shown in FIG. 5, a plurality of saw blade-shaped convex portions 33 are formed in a region B located substantially at the center of the joining surface 31 of the cutting edge 30 as shown in FIG. 6. The size of the region B is equal to the size of the region A. The cutting edge 30 is joined to the pedestal 20 by fitting the convex portion 33 into the concave portion 24 of the pedestal 20.

具体的には、図７に示されるように、台座２０の凹部２４及び切れ刃３０の凸部３３の間には、ろう材４０が設けられている。すなわち、台座２０の凹部２４及び切れ刃３０の凸部３３は、嵌合された状態でろう付けにより接合されている。   Specifically, as shown in FIG. 7, a brazing material 40 is provided between the concave portion 24 of the base 20 and the convex portion 33 of the cutting edge 30. That is, the concave portion 24 of the pedestal 20 and the convex portion 33 of the cutting edge 30 are joined by brazing in a fitted state.

鋸刃形状に形成された凹部２４及び凸部３３が互いに嵌合されることにより、凹部２４及び凸部３３は平面方向ｘ，ｙに接触している。また、領域Ａ及び領域Ｂの中心を通り、且つ台座２０及び切れ刃３０のそれぞれの接合面２３，３１に垂直な法線ｎを中心とする回転方向を「θ」とすると、凹部２４及び凸部３３は回転方向θにも接触している。   The concave portion 24 and the convex portion 33 formed in a saw blade shape are fitted to each other, whereby the concave portion 24 and the convex portion 33 are in contact with the planar directions x and y. Further, assuming that the rotation direction centering on the normal line n passing through the centers of the region A and the region B and perpendicular to the joint surfaces 23 and 31 of the pedestal 20 and the cutting edge 30 is “θ”, the concave portion 24 and the convex portion The part 33 is also in contact with the rotational direction θ.

以上説明した本実施形態の切削工具１０によれば、以下の（１）〜（３）に示される作用及び効果を得ることができる。   According to the cutting tool 10 of this embodiment demonstrated above, the effect | action and effect shown by the following (1)-(3) can be acquired.

（１）切れ刃３０によりワークを切削する際、切れ刃３０には、平面方向ｘ，ｙに平行な力、すなわちせん断力が加わる場合がある。この点、本実施形態の切削工具１０では、凹部２４及び凸部３３が平面方向ｘ，ｙ及び回転方向θに接触しているため、切れ刃３０に加わるせん断力に平面方向ｘ，ｙの成分の力、及び回転方向θの成分の力が含まれている場合でも、それらの方向成分の力を凹部２４及び凸部３３の嵌合構造により受けることができる。すなわち、凹部２４及び凸部３３の嵌合構造により、平面方向ｘ，ｙ及び回転方向θの接合強度を確保することができる。よって、せん断力に起因する台座２０からの切れ刃３０の剥離を抑制することができる。   (1) When a workpiece is cut by the cutting edge 30, a force parallel to the planar directions x and y, that is, a shearing force may be applied to the cutting edge 30. In this regard, in the cutting tool 10 of the present embodiment, since the concave portion 24 and the convex portion 33 are in contact with the planar directions x and y and the rotational direction θ, the components of the planar directions x and y are added to the shearing force applied to the cutting edge 30. Even when the force of the component and the force of the component in the rotation direction θ are included, the force of the direction component can be received by the fitting structure of the concave portion 24 and the convex portion 33. That is, the fitting strength in the planar directions x and y and the rotation direction θ can be ensured by the fitting structure of the concave portion 24 and the convex portion 33. Therefore, peeling of the cutting edge 30 from the base 20 due to the shearing force can be suppressed.

（２）台座２０の凹部２４及び切れ刃３０の凸部３３が鋸刃形状に形成されている。これにより、凹部２４及び凸部３３を平面方向ｘ，ｙ及び回転方向θに接触させる構造を容易に実現することができる。   (2) The concave portion 24 of the base 20 and the convex portion 33 of the cutting blade 30 are formed in a saw blade shape. Thereby, the structure which makes the recessed part 24 and the convex part 33 contact planar direction x, y and rotation direction (theta) can be implement | achieved easily.

（３）台座２０の接合面２３には、凹部２４が複数形成されている。また、切れ刃３０の接合面３１には、凸部３３が複数形成されている。これにより、凹部２４及び凸部３３を複数箇所で嵌合させることができるため、台座２０に対する切れ刃３０の接合強度を向上させることができる。   (3) A plurality of recesses 24 are formed on the joint surface 23 of the base 20. A plurality of convex portions 33 are formed on the joint surface 31 of the cutting edge 30. Thereby, since the recessed part 24 and the convex part 33 can be fitted in multiple places, the joining strength of the cutting blade 30 with respect to the base 20 can be improved.

なお、上記実施形態は、以下の形態にて実施することもできる。
・図８及び図９に示されるように、台座２０の凹部２４及び切れ刃３０の凸部３３は波形状にそれぞれ形成されていてもよい。このような構成であっても、凹部２４及び凸部３３を平面方向ｘ，ｙ及び回転方向θに接触させることが可能であるため、上記実施形態に準じた作用及び効果を得ることが可能である。 In addition, the said embodiment can also be implemented with the following forms.
As shown in FIGS. 8 and 9, the concave portion 24 of the pedestal 20 and the convex portion 33 of the cutting edge 30 may be formed in a wave shape, respectively. Even in such a configuration, since the concave portion 24 and the convex portion 33 can be brought into contact with the planar directions x and y and the rotation direction θ, it is possible to obtain operations and effects according to the above embodiment. is there.

・凹部２４及び凸部３３が鋸刃形状又は波形状に形成されている場合、１つの凹部２４と１つの凸部３３とを嵌合させれば、凹部２４及び凸部３３を平面方向ｘ，ｙ及び回転方向θに接触させることが可能である。そのため、台座２０の接合面２３に凹部２４を１つだけ形成し、且つ切れ刃３０の接合面３１に凸部３３を１つだけ形成してもよい。   -When the recessed part 24 and the convex part 33 are formed in sawtooth shape or a wave shape, if the one recessed part 24 and the one convex part 33 are fitted, the recessed part 24 and the convex part 33 will be made into plane direction x, It is possible to make contact in y and the rotation direction θ. Therefore, only one concave portion 24 may be formed on the joint surface 23 of the pedestal 20, and only one convex portion 33 may be formed on the joint surface 31 of the cutting edge 30.

・図１０及び図１１に示されるように、台座２０の凹部２４及び切れ刃３０の凸部３３は円形状に形成されていてもよい。この場合、台座２０の接合面２３に複数の凹部２４を形成するとともに、切れ刃３０の接合面３１に複数の凸部３３を形成することにより、凹部２４及び凸部３３を平面方向ｘ，ｙ及び回転方向θに接触させることが可能である。   -As FIG.10 and FIG.11 shows, the recessed part 24 of the base 20 and the convex part 33 of the cutting blade 30 may be formed in circular shape. In this case, a plurality of concave portions 24 are formed on the joint surface 23 of the pedestal 20 and a plurality of convex portions 33 are formed on the joint surface 31 of the cutting edge 30 so that the concave portions 24 and the convex portions 33 are arranged in the plane directions x, y. And in the rotational direction θ.

・台座２０の凹部２４及び切れ刃３０の凸部３３のそれぞれの形状は、平面方向ｘ，ｙ及び回転方向θに接触させることが可能であれば、任意に変更可能である。例えば、台座２０の凹部２４及び切れ刃３０の凸部３３は、三角形状や四角形状、星形状等に形成されていてもよい。   The respective shapes of the concave portion 24 of the pedestal 20 and the convex portion 33 of the cutting edge 30 can be arbitrarily changed as long as they can be brought into contact with the planar directions x and y and the rotational direction θ. For example, the concave portion 24 of the base 20 and the convex portion 33 of the cutting edge 30 may be formed in a triangular shape, a quadrangular shape, a star shape, or the like.

・切れ刃３０の接合面３１に凹部が形成され、この凹部に嵌合される凸部が台座２０の接合面２３に形成されていてもよい。また、切れ刃３０の接合面２３に凹部及び凸部が形成され、それらの凹部及び凸部にそれぞれ嵌合される凸部及び凹部が切れ刃３０の接合面３１に形成されていてもよい。すなわち、台座２０及び切れ刃３０のそれぞれの接合面２３，３１のいずれか一方に、凹部が形成され、台座２０及び切れ刃３０のそれぞれの接合面２３，３１のいずれか他方に、凹部に嵌合する凸部が形成されていればよい。   A concave portion may be formed on the joint surface 31 of the cutting edge 30, and a convex portion fitted into the concave portion may be formed on the joint surface 23 of the base 20. In addition, a concave portion and a convex portion may be formed on the joint surface 23 of the cutting edge 30, and a convex portion and a concave portion that are respectively fitted to the concave portion and the convex portion may be formed on the joint surface 31 of the cutting edge 30. That is, a concave portion is formed on one of the joint surfaces 23 and 31 of the pedestal 20 and the cutting edge 30, and the concave portion is fitted on either one of the joint surfaces 23 and 31 of the pedestal 20 and the cutting blade 30. It is only necessary that the convex portions to be joined are formed.

・本発明は上記の具体例に限定されるものではない。すなわち、上記の具体例に、当業者が適宜設計変更を加えたものも、本発明の特徴を備えている限り、本発明の範囲に包含される。例えば、前述した各具体例が備える各要素及びその配置、材料、形状、サイズ等は、例示したものに限定されるわけではなく適宜変更することができる。また、前述した実施形態が備える各要素は、技術的に可能な限りにおいて組み合わせることができ、これらを組み合わせたものも本発明の特徴を含む限り本発明の範囲に包含される。   -This invention is not limited to said specific example. That is, the above-described specific examples that are appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, each element included in each of the specific examples described above and its arrangement, material, shape, size, and the like are not limited to those illustrated, and can be changed as appropriate. Moreover, each element with which embodiment mentioned above is provided can be combined as long as it is technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

１０：切削工具
２０：台座
２３：接合面
２４：凹部
３０：切れ刃
３１：接合面
３３：凸部 10: Cutting tool 20: Base 23: Joining surface 24: Concave portion 30: Cutting edge 31: Joining surface 33: Convex portion

Claims (5)

超硬合金により構成される台座（２０）と、
単結晶炭化珪素により構成され、前記台座にろう付けにより接合される切れ刃（３０）と、を備え、
前記台座及び前記切れ刃のそれぞれの接合面（２３，３１）のいずれか一方には、凹部（２４）が形成され、
前記台座及び前記切れ刃のそれぞれの接合面のいずれか他方には、前記凹部に嵌合する凸部（３３）が形成され、
前記凹部及び前記凸部は、前記台座及び前記切れ刃のそれぞれの接合面に平行な平面方向に接触し、且つ前記台座及び前記切れ刃のそれぞれの接合面に垂直な法線を中心とする回転方向に接触している
切削工具。 A pedestal (20) made of cemented carbide;
A cutting edge (30) composed of single crystal silicon carbide and joined to the pedestal by brazing,
A concave portion (24) is formed on any one of the joint surfaces (23, 31) of the pedestal and the cutting edge,
A convex part (33) that fits into the concave part is formed on the other of the joint surfaces of the pedestal and the cutting edge,
The concave portion and the convex portion contact with each other in a plane direction parallel to the joint surfaces of the pedestal and the cutting edge, and rotate around a normal line perpendicular to the joint surfaces of the pedestal and the cutting blade. Cutting tool in contact with direction. 前記凹部及び前記凸部は、鋸刃形状にそれぞれ形成されている
請求項１に記載の切削工具。 The cutting tool according to claim 1, wherein the concave portion and the convex portion are each formed in a saw blade shape. 前記凹部及び前記凸部は、波形状にそれぞれ形成されている
請求項１に記載の切削工具。 The cutting tool according to claim 1, wherein the concave portion and the convex portion are each formed in a wave shape. 前記凹部及び前記凸部はそれぞれ複数形成されている
請求項２又は３に記載の切削工具。 The cutting tool according to claim 2 or 3, wherein a plurality of the concave portions and the convex portions are formed. 前記凹部及び前記凸部は、円形状にそれぞれ形成されるとともに、それぞれ複数形成されている
請求項１に記載の切削工具。 The cutting tool according to claim 1, wherein the concave portion and the convex portion are each formed in a circular shape and are formed in plural.
JP2016096826A 2016-05-13 2016-05-13 Cutting tool Pending JP2017202557A (en)

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WO2022137323A1 (en) * 2020-12-22 2022-06-30 住友電工ハードメタル株式会社 Cutting tool and method for manufacturing same
JP2022104365A (en) * 2020-12-28 2022-07-08 三星ダイヤモンド工業株式会社 Joint

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US1460030A (en) * 1922-12-21 1923-06-26 Mattson Julius Milling-machine cutter
JPH0379206A (en) * 1989-08-21 1991-04-04 Showa Denko Kk Single crystal silicon carbide cutting tool
JPH03170207A (en) * 1989-11-27 1991-07-23 Sumitomo Electric Ind Ltd Cutting tool
JP2003145335A (en) * 2001-11-16 2003-05-20 Allied Material Corp High speed cutting circular saw

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US1460030A (en) * 1922-12-21 1923-06-26 Mattson Julius Milling-machine cutter
JPH0379206A (en) * 1989-08-21 1991-04-04 Showa Denko Kk Single crystal silicon carbide cutting tool
JPH03170207A (en) * 1989-11-27 1991-07-23 Sumitomo Electric Ind Ltd Cutting tool
JP2003145335A (en) * 2001-11-16 2003-05-20 Allied Material Corp High speed cutting circular saw

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Publication number Priority date Publication date Assignee Title
WO2022137323A1 (en) * 2020-12-22 2022-06-30 住友電工ハードメタル株式会社 Cutting tool and method for manufacturing same
JP7098073B1 (en) * 2020-12-22 2022-07-08 住友電工ハードメタル株式会社 How to manufacture cutting tools
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JP2022104365A (en) * 2020-12-28 2022-07-08 三星ダイヤモンド工業株式会社 Joint
JP7270262B2 (en) 2020-12-28 2023-05-10 三星ダイヤモンド工業株式会社 joint

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