JP4171738B2

JP4171738B2 - Tool manufacturing method and tool manufactured from the manufacturing method

Info

Publication number: JP4171738B2
Application number: JP2005207821A
Authority: JP
Inventors: 眞麿渡邊
Original assignee: OKAWA SANKI INDUSTRIAL CO., LTD.
Current assignee: OKAWA SANKI INDUSTRIAL CO., LTD.
Priority date: 2005-07-15
Filing date: 2005-07-15
Publication date: 2008-10-29
Anticipated expiration: 2025-07-15
Also published as: JP2007021659A

Description

本発明は、複雑な形状の刃物を極めて簡単に製造することができる刃物の製造法及びその製造法から製造された刃物に関する。 The present invention relates to a blade manufacturing method capable of manufacturing a blade having a complicated shape extremely easily and a blade manufactured from the manufacturing method.

出願人は、特許文献１において、線材が被覆材で被覆されてなる被覆線材に切り込みを入れ、前記線材から前記被覆材を剥離するために用いられる刃物を開発した。特に、特許文献１の図１（ａ）及び（ｂ）に示した刃物は、カッタ状の両刃が一体成形されたものである。このような両刃が一体成形された刃物自体としては、理想的であったが、複雑な形状のために量産は困難視されていた。 In Patent Document 1, the applicant has developed a blade used for cutting a covered wire formed by covering a wire with a covering material and peeling the covering material from the wire. In particular, the cutter shown in FIGS. 1A and 1B of Patent Document 1 is obtained by integrally forming a cutter-like double blade. Although such a blade itself formed by integrally forming both blades was ideal, mass production was considered difficult due to its complicated shape.

このため、特許文献１では、図１０（ａ）及び（ｂ）に示した二つが分離した刃物を合わせて使用していた。使用による作用は同一であるが、被覆材を剥離する際に加える荷重の累積によって、図１０（ａ）及び（ｂ）に示した二つが分離した刃物では、分離した刃物の間に被覆材の切りカス等が詰まり、このため、被覆効率が極端に低下する重大な欠点があった。ところが、カッタ状の両刃が一体成形されたものでは、目詰まりしないものである。 For this reason, in Patent Document 1, the two separated blades shown in FIGS. 10A and 10B are used together. Although the effect by use is the same, the two separated blades shown in FIGS. 10 (a) and 10 (b) due to the accumulation of the load applied when the covering material is peeled off, the covering material is separated between the separated blades. There is a serious drawback that the cutting efficiency is extremely reduced due to clogging of cutting chips and the like. However, when the cutter-like double blades are integrally formed, they are not clogged.

また、刃物の製造法としての公知公報としては、特許文献２又は３が存在する。特許文献２は、刃先部分に刃欠け等が生じにくくするための刃物の製造法であり、刃物自体としては、通常の刃物の形状であり、製造法としての特有の技術は存在しない。また、特許文献３では、刃先角度を小さくするようにした刃物の製造法で、コーティング技術を用いるものであり、複雑な刃物の製造法は存在していない。
特開２００２−３３６５６３特開平１１−１０６８０１号特開平１０−６６７９０号 Moreover, patent document 2 or 3 exists as a well-known gazette as a manufacturing method of a cutter. Patent Document 2 is a method for manufacturing a blade for making it difficult to cause chipping or the like at the blade edge portion, and the blade itself has the shape of a normal blade, and there is no specific technique as a manufacturing method. Moreover, in patent document 3, a coating technique is used by the manufacturing method of the cutter which made the blade edge angle small, and the manufacturing method of a complicated cutter does not exist.
JP 2002-336563 A JP-A-11-106801 JP-A-10-66790

しかるに、特許文献１の図１（ａ）及び（ｂ）に示したカッタ状の両刃が一体成形された複雑な形状の刃物を簡単に製造する刃物の製造法は存在しなかった。このため、本発明が解決しようとする課題（技術的課題又は目的等）は、複雑な形状の刃物を極めて簡単に製造することができる刃物の製造法及びその製造法から製造された刃物の開発を実現することである。 However, there has been no method for manufacturing a blade that easily manufactures a blade having a complicated shape in which the cutter-shaped double blades shown in FIGS. 1A and 1B of Patent Document 1 are integrally formed. For this reason, the problem (technical problem or purpose) to be solved by the present invention is a method for manufacturing a blade capable of manufacturing a blade having a complicated shape very easily and the development of the blade manufactured from the method. Is to realize.

そこで、発明者は上記課題を解決すべく鋭意，研究を重ねた結果、請求項１の発明を、第１刃部は、第１主面と、対角線状に形成された第１傾斜刃面と第１平坦刃面とからなるとともに、第２刃部は、第２主面と、対角線状に形成された第２傾斜刃面と第２平坦刃面とからなり、前記第１傾斜刃面と前記第２傾斜刃面の長手方向がクロス状に形成された刃物において、この刃物を製造するための比較的厚肉の工具材等の材質を有した略長方形状の素材本体部に対して、所定角度になるようにセットし、ワイヤ放電加工機によるワイヤ電極にて、第１の工程で前記素材本体部の厚さの半分の箇所の第１面側に、第２刃部の第２平坦刃面と第１刃部の第１傾斜刃面とを成形し、次いで第２の工程で前記素材本体部を反転させた後に、前記素材本体部の厚さの半分の箇所の第２面側に対して、第１刃部の第１平坦刃面と第２傾斜刃面とを形成することを特徴とする刃物の製造法としたことにより、前記課題を解決したものである。 Therefore, as a result of intensive studies and studies by the inventors to solve the above problems, the invention according to claim 1, the first blade portion includes a first main surface, and a first inclined blade surface formed diagonally. The second blade portion includes a second main surface, a second inclined blade surface formed in a diagonal line, and a second flat blade surface, and the first inclined blade surface. In the blade in which the longitudinal direction of the second inclined blade surface is formed in a cross shape, with respect to a substantially rectangular material main body having a material such as a relatively thick tool material for manufacturing the blade, Set to a predetermined angle, and with a wire electrode by a wire electric discharge machine, a second flat portion of the second blade portion is formed on the first surface side of the half of the thickness of the material body portion in the first step. After forming the blade surface and the first inclined blade surface of the first blade portion, and then inverting the material body portion in the second step, the material body By making the first flat blade surface of the first blade portion and the second inclined blade surface to the second surface side of the half of the thickness of the blade manufacturing method, The problem is solved.

請求項２の発明においては、請求項１の発明において、前記第１傾斜刃面と前記第１平坦刃面の交差箇所で第１刃先が形成され、前記第２傾斜刃面と前記第２平坦刃面の交差箇所とで第２刃先が形成され、該第２刃先と前記第１刃先との長手方向クロス状に形成されたことを特徴とする刃物の製造法としたことにより、前記課題を解決した。 According to a second aspect of the present invention, in the first aspect of the invention, a first cutting edge is formed at an intersection of the first inclined blade surface and the first flat blade surface, and the second inclined blade surface and the second flat blade surface. A second cutting edge is formed at the intersecting portion of the blade surface, and the above-mentioned problem is achieved by a manufacturing method of a blade characterized by being formed in a longitudinal cross shape between the second cutting edge and the first cutting edge. Settled.

請求項３の発明では、請求項１又は２において、その刃物の製造法から製造されてなることを特徴とする刃物としたことにより、前記課題を解決したものである。 According to a third aspect of the invention, in the first or second aspect of the invention, the above-mentioned problem is solved by using a blade characterized by being manufactured from the method of manufacturing the blade.

請求項１の発明においては、特に、複雑な形状の刃物を極めて簡単に製造することができる利点がある。また、請求項２の発明においては、請求項１と同様の効果を奏する。また、請求項３の発明においては、高精度の一体成形の刃物を製造することができる。請求項４の発明においては、目詰まりしない刃物を提供できる効果を奏する。 In the invention of claim 1, there is an advantage that a blade having a complicated shape can be manufactured very easily. Further, the invention of claim 2 has the same effect as that of claim 1. In the invention of claim 3, a highly accurate integrally formed blade can be manufactured. In invention of Claim 4, there exists an effect which can provide the cutter which is not clogged.

以下、本発明の実施形態について図面に基づいて説明する。まず、本発明によって製造された刃物について説明する。図５（Ｃ）に示したものは、比較的厚肉の工具材等の材質を有した略長方形状の素材本体部Ｍに対して、同材質で幅が狭まり且つ取付溝１０ａが形成された取付部１０が一体形成されている製造前の材料である。そして、本発明による製造法にて製造された刃物が図５（Ａ）及び（Ｂ）に示した通りである。該刃物は、第１刃部Ａと第２刃部Ｂとが一体形成されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the blade manufactured according to the present invention will be described. FIG. 5C shows a substantially rectangular material main body M having a relatively thick material such as a tool material, the width of which is reduced and the mounting groove 10a is formed. It is the material before manufacture in which the attaching part 10 is integrally formed. And the cutter manufactured with the manufacturing method by this invention is as having shown to FIG. 5 (A) and (B). As for this cutter, the 1st blade part A and the 2nd blade part B are integrally formed.

また、前記第１刃部Ａは、第１主面１と、対角線状に形成された第１傾斜刃面２と第１平坦刃面３と第１刃先４からなる。前記第１傾斜刃面２と前記第１平坦刃面３の交差箇所とで前記第１刃先４が構成されている。また、前記第２刃部Ｂは、第２主面５と、対角線状に形成された第２傾斜刃面６と第２平坦刃面７と第２刃先８からなる。前記第２傾斜刃面６と前記第２平坦刃面７の交差箇所とで前記第２刃先８が構成されている。 The first blade portion A includes a first main surface 1, a first inclined blade surface 2, a first flat blade surface 3, and a first blade edge 4 formed in a diagonal line. The first blade edge 4 is constituted by the intersection of the first inclined blade surface 2 and the first flat blade surface 3. The second blade portion B includes a second main surface 5, a second inclined blade surface 6, a second flat blade surface 7 and a second blade edge 8 formed in a diagonal line. The second blade edge 8 is constituted by the intersection of the second inclined blade surface 6 and the second flat blade surface 7.

また、前記第１刃先４と前記第２刃先８のそれぞれの長手方向は、クロス状となり、且つ交差箇所で接触されるか、或いは接触状態になるように構成されている。また、前記第１刃先４と前記第２刃先８のそれぞれの長手方向に対する角度αは、約３０度程度に形成され、しかも両方の第１刃先４と前記第２刃先８とは、側面から見て先端にゆくにしたがって先鋭状になるように形成されている。 The longitudinal directions of the first blade edge 4 and the second blade edge 8 are cross-shaped and are configured to be in contact with each other or in a contact state. In addition, an angle α with respect to the longitudinal direction of each of the first cutting edge 4 and the second cutting edge 8 is formed to be about 30 degrees, and both the first cutting edge 4 and the second cutting edge 8 are viewed from the side. It is formed so as to become sharper as it goes to the tip.

次に、本発明の刃物の製造法について、図１乃至図４に基づいて説明する。素材本体部Ｍに対して、放電加工機によるワイヤ電極カットにて切断する方法であり、凡そ２工程にて成形する。最初の工程は、図１（１）から図２（８）の工程であり、前記第１刃部Ａの第１傾斜刃面２と、前記第２刃部Ｂの第２平坦刃面７とを成形するものであり、図４（Ａ）から（Ｂ）までの工程である。図１（１）から図２（８）の最初の工程におけるそれぞれの段階の（ａ）は斜視状態図であり、（ｂ）は（ａ）の平面側状態図である。 Next, the manufacturing method of the blade of this invention is demonstrated based on FIG. 1 thru | or FIG. In this method, the material body M is cut by wire electrode cutting using an electric discharge machine, and is formed in approximately two steps. The first step is the step from FIG. 1 (1) to FIG. 2 (8), the first inclined blade surface 2 of the first blade portion A, the second flat blade surface 7 of the second blade portion B, and Is the process from FIG. 4A to FIG. 4B. FIG. 1A to FIG. 2A are first perspective views, and FIG. 2B is a plan view side view of FIG.

第２又は最後の工程は、その素材本体部Ｍを反転させた後の図３（９）から図３（１３）の工程であり、前記第２刃部Ｂの第２傾斜刃面６と、前記第１刃部Ａの第１平坦刃面３とを成形するものであり、図４（Ｂ）を反転させて、図４（Ｃ）からの工程である。その図３（９）から図３の（１３）までの第２又は最後の工程におけるそれぞれの段階の（ａ）は斜視状態図であり、（ｂ）は（ａ）の底面側状態図である。 The second or last step is the step of FIG. 3 (9) to FIG. 3 (13) after inverting the material main body M, the second inclined blade surface 6 of the second blade B, The first flat blade surface 3 of the first blade portion A is formed, and the process from FIG. 4C is performed by inverting FIG. 4B. 3A is a perspective state diagram, and FIG. 3B is a bottom side state diagram of FIG. 3A in each stage in the second or last step from FIG. 3 (9) to FIG. 3 (13). .

先ず、加工用冶具Ｊの溝部２０の素材本体部Ｍに一体形成した取付部１０を挿入し、その取付溝１０ａ箇所を螺子２１締めしてセットする。その素材本体部Ｍの高さ位置は、位置調節螺子２２を設け、これに接触させることで調整をセットする。また、前記第１刃部Ａ及び第２刃部Ｂのそれぞれの先端角θは、放電加工機には垂直状のワイヤ電極にて加工するため、前記加工用冶具Ｊの溝部２０の長手方向のｎ線の方向と垂線とでなす角で決定される。この場合は、溝部２０の長手方向のｎ線と垂線との角度をθとしたものである。
該角度θは、本発明の実施形態では、４５°であるが、この角度に限定されない。 First, the attachment portion 10 formed integrally with the material main body M of the groove portion 20 of the processing jig J is inserted, and the attachment groove 10a portion is set by tightening the screw 21. The height position of the material main body M is set by adjusting the position by providing a position adjusting screw 22. In addition, since the tip angle θ of each of the first blade part A and the second blade part B is processed by a vertical wire electrode in the electric discharge machine, the longitudinal angle of the groove part 20 of the processing jig J is determined. It is determined by the angle formed by the direction of the n-line and the perpendicular. In this case, the angle between the n-line and the perpendicular in the longitudinal direction of the groove 20 is θ.
The angle θ is 45 ° in the embodiment of the present invention, but is not limited to this angle.

そして、放電加工機を駆動させ、図１（１）のようにワイヤ電極に素材本体部Ｍを近づける。そして、前記素材本体部Ｍの厚さの半分（２分の１）の箇所を切断する［図１（２）］。そして、その状態で図１（３）から図１（４）に切断するとともに図２（５）の状態に徐々に切断する。そして、ワイヤ電極が前記素材本体部Ｍの上側隅角箇所になる箇所まで切断して第２平坦刃面７を形成する［図２（６）］。このような図１（１）から図２（６）までは、同一平坦面として切断加工して第２平坦刃面７を形成する。 Then, the electric discharge machine is driven to bring the material body M close to the wire electrode as shown in FIG. Then, a half (1/2) portion of the thickness of the material body M is cut [FIG. 1 (2)]. Then, in this state, cutting is performed from FIG. 1 (3) to FIG. 1 (4) and gradually cutting to the state of FIG. 2 (5). Then, the second flat blade surface 7 is formed by cutting the wire electrode to a location that becomes the upper corner portion of the material body M [FIG. 2 (6)]. From FIG. 1 (1) to FIG. 2 (6), the second flat blade surface 7 is formed by cutting the same flat surface.

今度は、図２（６）から図２（７）にかけて角度αとなるように屈曲させて切断する。さらに進めると、ワイヤ電極が前記素材本体部Ｍから飛び出すとともに、切断片が落下して、その角度α面が、第１傾斜刃面２として成形されるものである［図２（８）］。このような工程が最初の工程であり、図４（Ａ）から（Ｂ）までの工程である。 This time, it is bent and cut to an angle α from FIG. 2 (6) to FIG. 2 (7). Further progressing, the wire electrode jumps out of the material body M, and the cut piece falls, and the angle α surface is formed as the first inclined blade surface 2 [FIG. 2 (8)]. Such a process is the first process, and is a process from FIG. 4 (A) to (B).

そして、今度は、第２平坦刃面７及び第１傾斜刃面２を形成した素材本体部Ｍを反転させる［図４（Ｃ）参照］。そして、図３（９）のようにワイヤ電極に素材本体部Ｍを近づける。そして、前記素材本体部Ｍの厚さの半分（２分の１）の箇所、すなわち、前記第２平坦刃面７と同一面を徐々に切断する［図３（１０）］。そして、その状態で同一面を切断し、ワイヤ電極が前記素材本体部Ｍの上側隅角箇所になる箇所まで切断して第２平坦刃面７を形成する［図３（１１）］。このような図３（１０）から図３（１１）までは、同一平坦面として切断加工して第１平坦刃面３を形成する。該第１平坦刃面３の形成によって、第１主面１と第１傾斜刃面２と第１刃先４とで第１刃部Ａの形成を完了する。 Then, this time, the material body M on which the second flat blade surface 7 and the first inclined blade surface 2 are formed is reversed [see FIG. 4C]. Then, the material body M is brought close to the wire electrode as shown in FIG. Then, the half of the thickness of the material body M (1/2), that is, the same plane as the second flat blade surface 7 is gradually cut [FIG. 3 (10)]. Then, the same surface is cut in this state, and the second flat blade surface 7 is formed by cutting the wire electrode to a position where the wire electrode becomes the upper corner portion of the material main body M [FIG. 3 (11)]. From FIG. 3 (10) to FIG. 3 (11), the first flat blade surface 3 is formed by cutting the same flat surface. By forming the first flat blade surface 3, the formation of the first blade portion A is completed by the first main surface 1, the first inclined blade surface 2, and the first blade edge 4.

今度は、図３（１１）から図３（１２）にかけて角度αとなるように屈曲させて切断する。さらに進めると、ワイヤ電極が前記素材本体部Ｍから飛び出すとともに、切断片が落下して、その角度α面が、第２傾斜刃面６として成形されるものである［図３（１３）］。該第２傾斜刃面６の形成によって、第２主面５と第２平坦刃面７と第２刃先８とで前記第２刃部Ｂの形成が完了する。 Next, it is bent and cut at an angle α from FIG. 3 (11) to FIG. 3 (12). Further progressing, the wire electrode jumps out of the material body M, and the cut piece falls, and the angle α surface is formed as the second inclined blade surface 6 [FIG. 3 (13)]. By forming the second inclined blade surface 6, the formation of the second blade portion B is completed by the second main surface 5, the second flat blade surface 7, and the second blade edge 8.

以上の製造法は、放電加工機によるワイヤ電極にて切断する２工程によるものである。特に、ワイヤ電極の線径を約０．０５ｍｍ乃至約０．３ｍｍ程度とするものである。また、第１の工程及び第２の工程をそれぞれ複数回としつつ、第１の工程と第２の工程が交互となるようにし、第１の工程の最初に素材本体部Ｍの厚さの半分よりも数μ乃至数十μ（好ましくは数μ）薄い厚みでワイヤ電極にて切断の加工を行い、第２の工程の最初に素材本体部Ｍの厚さの半分よりも数μ乃至数十μ薄い厚みでワイヤ電極にて切断の加工を行い、次の第１の工程及び第２の工程で数μ乃至数十μ（好ましくは数μ）薄い厚みに対して切断加工して、第１刃部Ａ及び第２刃部Ｂを成形する。このような刃物の製造法によって、数μの誤差で加工することができる。 The above manufacturing method is based on two steps of cutting with a wire electrode by an electric discharge machine. In particular, the wire diameter of the wire electrode is about 0.05 mm to about 0.3 mm. In addition, the first step and the second step are performed a plurality of times while the first step and the second step are alternated, and at the beginning of the first step, half the thickness of the material main body M. Then, cutting is performed with a wire electrode at a thickness that is several μ to several tens μ (preferably several μ) thinner than that, and at the beginning of the second step, several μ to several tens than the half of the thickness of the material body M. Cutting is performed with a wire electrode with a thickness of μ, and cutting is performed with respect to a thickness of several μ to several tens of μ (preferably several μ) in the following first and second steps. The blade part A and the second blade part B are formed. By such a blade manufacturing method, machining can be performed with an error of several μm.

具体的には、前記素材本体部Ｍの厚みの２分の１よりも、数μ薄い厚みでワイヤ電極カット切断の最初又は第１の工程の加工を行う［図１（１）から図２（８）の工程］。そして、第２工程でも、前記素材本体部Ｍの厚みの２分の１よりも、数μ薄い厚みでワイヤ電極にて切断の加工を行う［図３（９）から図３（１３）］。その場合には、合計で約１０数μの膜状部が形成されることになり、そして前記素材本体部Ｍを反転して第１工程の次工程で数μの厚みに対して切断加工して、さらに前記素材本体部Ｍを反転して第２工程の次工程で数μの厚みに対して切断加工して、第１刃部Ａ及び第２刃部Ｂを成形して高精度の刃物を製造するものである。 Specifically, the first or first step of wire electrode cut cutting is performed with a thickness that is several μm thinner than half the thickness of the material main body M [FIG. 1 (1) to FIG. Step 8)]. And also in a 2nd process, a cutting | disconnection process is performed with a wire electrode by the thickness which is several micrometers thinner than the thickness of the said material main-body part M [FIG. 3 (9) to FIG. 3 (13)]. In that case, a total of about 10 μm of film-like portions will be formed, and the material body M is inverted and cut to a thickness of several μm in the next step of the first step. In addition, the material body M is further inverted and cut to a thickness of several μm in the next step of the second step, and the first blade portion A and the second blade portion B are formed to form a high-precision blade. Is to be manufactured.

本発明の製造法によって製造された刃物は、極めて高精度に仕上げられているため、図６（Ｂ）に示すように、両刃物が近接したり、離間したりする作業が連続するため、左右の第１刃部Ａと第２刃部Ｂとがほぼ接する状態になる。これを回避するために、第１刃部Ａの第１平坦刃面３側から第１主面１に向かっての反り面９が、第２刃部Ｂの第２平坦刃面７側から第２主面５に向かっての反り面１０がそれぞれ形成されている。 Since the blade manufactured by the manufacturing method of the present invention is finished with extremely high accuracy, as shown in FIG. 6 (B), the operations of bringing both the blades close to each other and separating them are continued. The 1st blade part A and the 2nd blade part B will be in the state which touches substantially. In order to avoid this, the warped surface 9 of the first blade portion A from the first flat blade surface 3 side toward the first main surface 1 is changed from the second flat blade surface 7 side of the second blade portion B to the first blade surface A side. Two warped surfaces 10 toward the main surface 5 are formed.

（１）乃至（４）は本発明の第１工程の状態図であり、それぞれの（ａ）は斜視状態図、（ｂ）は（ａ）の平面側状態図である。(1) thru | or (4) is a state figure of the 1st process of this invention, (a) is each a perspective state figure, (b) is a plane side state figure of (a). （５）乃至（８）は本発明の第１工程の状態図であり、それぞれの（ａ）は斜視状態図、（ｂ）は（ａ）の平面側状態図である。(5) thru | or (8) are the state diagrams of the 1st process of this invention, each (a) is a perspective state diagram, (b) is a plane side state diagram of (a). （９）乃至（１３）は本発明の第２工程の状態図であり、それぞれの（ａ）は斜視状態図、（ｂ）は（ａ）の底面側状態図である。(9) thru | or (13) is a state figure of the 2nd process of this invention, each (a) is a perspective state figure, (b) is a bottom face side state figure of (a). （Ａ）は本発明の第１工程で素材本体部を加工用冶具に装着した斜視図、（Ｂ）は本発明の第１工程で素材本体部を加工用冶具に装着して第１工程を完了した状態の斜視図、（Ｂ）は本発明の第２工程で素材本体部を加工用冶具に反転して装着した斜視図である。(A) is a perspective view in which the material main body is mounted on the processing jig in the first step of the present invention, and (B) is the first step in which the material main body is mounted on the processing jig in the first step of the present invention. FIG. 7B is a perspective view of the completed state, and FIG. 7B is a perspective view in which the material main body is inverted and attached to the processing jig in the second step of the present invention. （Ａ）は製造された本発明の刃物の斜視図、（Ｂ）は（Ａ）のＰ−Ｐ線矢視断面図、（Ｃ）は第１刃先の長手方向に対する角度を表すものであって（Ａ）のＱ−Ｑ線矢視断面図、（Ｄ）は第２刃先の長手方向に対する角度を表すものであって（Ａ）のＲ−Ｒ線矢視断面図、（Ｅ）は製造前の取付部付き素材本体部の斜視図である。(A) is a perspective view of the manufactured blade of the present invention, (B) is a cross-sectional view taken along the line PP of (A), and (C) represents an angle with respect to the longitudinal direction of the first cutting edge. (A) QQ line arrow sectional drawing, (D) represents the angle with respect to the longitudinal direction of a 2nd blade edge, Comprising: RR line arrow sectional drawing of (A), (E) is before manufacture It is a perspective view of the raw material main-body part with an attachment part. （Ａ）は製造された本発明の別の実施形態の刃物の斜視図、（Ｂ）は（Ａ）のＳ−Ｓ線矢視断面図、（Ｃ）は両刃物が対向して離間して設けられた平面図、（Ｄ）は両刃物が対向して先端が接合せんとする平面図、（Ｅ）は（Ｄ）のＴ−Ｔ線矢視拡大断面図である。(A) is a perspective view of a cutter according to another embodiment of the present invention manufactured, (B) is a cross-sectional view taken along the line S-S of (A), and (C) is a state where both the cutters face each other and are separated from each other. The provided plan view, (D) is a plan view in which both blades face each other and the tip is joined, and (E) is an enlarged cross-sectional view taken along line TT in (D).

Explanation of symbols

Ａ…第１刃部、１…第１主面、２…第１傾斜刃面、３…第１平坦刃面、４…第１刃先、Ｂ…第２刃部、５…第２主面、６…第２傾斜刃面、７…第２平坦刃面、８…第２刃先、
Ｍ…素材本体部。
A ... 1st blade part, 1 ... 1st main surface, 2 ... 1st inclination blade surface, 3 ... 1st flat blade surface, 4 ... 1st blade edge, B ... 2nd blade part, 5 ... 2nd main surface, 6 ... 2nd inclined blade surface, 7 ... 2nd flat blade surface, 8 ... 2nd blade edge,
M: Material body.

Claims

The first blade portion includes a first main surface, a first inclined blade surface formed in a diagonal shape, and a first flat blade surface, and the second blade portion is formed in a diagonal shape with the second main surface. In the blade which consists of the made 2nd inclined blade surface and the 2nd flat blade surface, and the longitudinal direction of the said 1st inclined blade surface and the said 2nd inclined blade surface was formed in cross shape, for manufacturing this blade The material body is set to a predetermined angle with respect to a substantially rectangular material body having a material such as a relatively thick tool material, and the material in the first step is a wire electrode by a wire electric discharge machine. Forming the second flat blade surface of the second blade portion and the first inclined blade surface of the first blade portion on the first surface side of the half of the thickness of the main body portion, and then in the second step, the material After reversing the main body, the first flat blade surface and the second inclined blade surface of the first blade portion with respect to the second surface side of the half of the thickness of the material main body portion, Formation process of the blade, characterized by.

In the first aspect of the invention, a first cutting edge is formed at an intersection of the first inclined blade surface and the first flat blade surface, and a first is formed at the intersection of the second inclined blade surface and the second flat blade surface. A method for manufacturing a cutter, wherein two cutting edges are formed and formed in a longitudinal cross shape between the second cutting edge and the first cutting edge.

The blade according to claim 1 or 2, wherein the blade is manufactured from the method for manufacturing the blade.