200804018 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種刀具以及其形成方法，尤其是指一 種利用硬焊而在滾齒刀之切削齒部一侧形成具有高硬度切 刃刀具之一種滾齒刀及其形成方法。 【先前技術】 Φ 齒輪是傳遞動力的重要元件，它在人類生活以及工業 演進的過程中扮演重要的角色，更可以說是人類工藝發展 、 之基本元素。一般而言，製造齒輪的方法很多，大致可分 為切削加工或者像精密鑄造、精密鍛造、擠壓以及粉末冶 金等無切屬加工方法製造。不過為了能夠經濟且有效率的 大量生產，以切削加工來成形齒輪的方法成為市場技術發 展之主流。 其中切削加工中不可或缺的即為加工齒輪之滾齒刀， Φ 滾齒刀的發展是可以說是材料的發展，刀具材料的發展演 進由傳統之高碳鋼、高速鋼，逐漸轉為碳化鎢、陶瓷以及 鑽石。習用技術的滾齒刀材料多為南碳鋼或咼速鋼材’不 過當在加工硬度高的材料時（如HRC40度以上），以高速鋼 為主要材料所製作的滚齒刀在加工效果以及壽命上並不理 : 想。為了解決這個問題，滚刀材料也逐漸的演進至硬度高 卜 的材料，如：碳化鎢材料。不過由於整個滚齒刀如果利用 碳化鎢材料來成形的話，會導致刀具整體成本相當高昂， 對於齒輪生產者而言無形中是一種負擔。 200804018 ‘ 為了能夠降低成本，在滾齒刀之切刃處設置高硬度刀 • 片的方式，成了降低成本的一種方法。習用製作此類刀具 的方法中大概可以分為機械固定式以及焊接式的方式。在 二 機械固定式的方法中，如美國專利 US. Patent. No. 3, 740, 808所揭露的一種刀具，請參閱圖一 A所示，該圖係為習用之機械固定式之齒輪加工刀具示意 圖。該刀具1之本體10上具有複數個容置槽11，每個容 置槽11内具有一螺紋結構12，然後刀刃片13設置在該容 _ 置槽10内且藉由固定件14將該刀刃片13固定於該容置槽 11内之螺紋結構12上。雖然該刀具1可以避免整體為碳 化鶴材料而產生的南成本問題’然而製造刀具的工程卻相 * 當繁瑣，加工也複雜，因此無形中也增加了成本的支出。 另一種方式為焊接式，如圖一 B所示，該圖係為習用 之刀具局部剖面示意圖。該刀具2上具有高硬度之刀刃21 係利用焊接的方式固定於滾齒刀本體20上。不過經由前述 之焊接技術而成的刀具2，在對該刀具2經過鍍膜的製程 _ 時，焊料會因為鍍膜製程中之高溫而熔化，使得刀刃21無 法固定於滚齒刀本體20上。所以傳統上利用焊接形成的刀 具，並無法進行鍍膜之製程，以至於影響刀具之使用壽命。 ♦ 綜合上述，因此亟需一種滾齒刀及其形成方法來解決 - 習用技術所產生的問題。 【發明内容】 本發明的主要目的是提供一種滾齒刀及其形成方法， 其係利用真空硬焊的方式於滾齒刀之齒部一侧形成有切刃 200804018 w 刀片，達到增加刀具壽命以及降低高硬度滾齒刀製造成本 ' 之目的。 本發明的次要目的是提供一種滚齒刀及其形成方法， - 其係利用真空硬焊時的溫度，對滾齒刀之基材進行熱處 一 理，達到減少製程程序以及降低製造成本之目的。 本發明的另一目的是提供一種滾齒刀及其形成方法， 其係在容屑槽上形成複數個凹槽以提供容置切刀刀片，達 到提供良好固定效果之目的。 # 為了達到上述之目的，本發明提供一種滾齒刀，包括： 一滾齒刀本體以及複數個切刃體。該滾齒刀本體，其係具 有複數個容屑槽，該容屑槽的兩侧具有複數個切削齒。該 ‘複數個切刃體，其係藉由一硬焊材料與該複數個切削齒相 連接。 較佳的是，該容屑槽内更開設有複數個凹槽，且每一 個凹槽分別與每一個切削齒相對應。其中該切刃體係嵌入 ^ 該凹槽内，且藉由該硬焊材料與該滾齒刀本體相連接。 較佳的是，該切刃體係為一鎢鋼材料。 較佳的是，硬焊材料係為一硬焊合金材料。 _ 為了達到上述之目的，本發明更提供一種滾齒刀之形 成方法，其係包括有下列步驟：首先，以一切削加工程序 ' 形成複數個容屑槽於一基材上；然後，以一真空硬焊程序， •- 將複數個切刃片分別連接於該複數個容屑槽之一侧面上， . 以形成一待加工本體；最後，形成複數個切削齒於該待加 工本體上，以形成一滚齒刀，該切削齒之一侧面上形成有 200804018 一切刃體。 較佳的是，該切削加工程序更包括有形成一凹槽於該 容屑槽上，然後將該切刃片嵌入該凹槽内。 較佳的是，其中該真空硬焊程序中更包括有對該基材 進行熱處理之步驟。 較佳的是，該滾齒刀之形成方法，其係更包括有對該 滾齒刀表面進行鍍膜之步驟。 較佳的是，該滚齒刀之形成方法，其係更包括有對該 待加工本體上之複數個切刃片進行研磨之步驟。 為了達到上述之目的，本發明更提供一種滚齒刀之形 成方法，首先，以一切削加工程序對一基材進行加工以形 成一刀具本體，該刀具本體具有複數個容屑槽，該容屑槽 -的兩側具有複數個切削齒。然後，以一真空硬焊程序，將 複數個切刃體分別連接於該複數個切削齒之一侧面上。 •【實施方式】 為使貴審查委員能對本發明之特徵、目的及功能有 更進一步的認知與瞭解，下文特將本發明之系統的相關細 , 部結構以及設計的理念原由進行說明，以使得審查委員可 以了解本發明之特點，詳細說明陳述如下： ' 請參閱圖二所示，該圖係為本發明之滚齒刀之較佳實 ·· 施例示意圖。該滚齒刀3包括有一滾齒刀本體30以及複數 , 個切刃體31。該滾齒刀本體30之轴向周圍具有複數個容 屑槽32，該容屑槽32的兩側具有複數個切削齒33。該容 200804018 ^ 屑槽32可以為直邊形之容屑槽或者是與該滾齒刀本體30 、 之中心轴呈一螺旋角之螺旋形容屑槽，其中具有直邊形之 容屑槽之滚齒刀可用以加工正齒輪；而具有螺旋角容屑槽 : 之滚齒刀則可以加工成形具有螺旋角之媧形齒輪。在該容 屑槽32上更開設有複數個凹槽301。該複數個切刃體31， 其係設置於該凹槽301内，該複數個切刃體31與該滾齒刀 本體30之間係藉由一硬焊材料（圖中未示）與該複數個切 削齒33相連接。 ,· 由於本發明之特徵在於利用較便宜之材料，如高速鋼 或者是高碳鋼來作為該滾齒刀本體30之材料，然後在利用 硬度較高之鎢鋼材料作為該切刀體31之材料。如此一來， - 不但可以減少加工高硬度滾齒刀3(如鎢鋼滾齒刀）之困難 度。另外本發明之滾齒刀3成本與整體材料都是鎢鋼材料 的滚齒刀之成本相較，便宜很多雨且可以提供相當的加工 效果。至於該硬焊材料之種類很多，在習用之技藝中可以 取得，通常該硬焊材料為合金材料，例如：可以選擇為鎳 • (Ni)、硼（B)、鎘(Cr)、鐵（Fe)、矽（Si)、碳（C)、磷（P)、 錳（Μη)所組成的群組以形成的合金材料。 請參閱圖三所示，該圖係為本發明之製作滚齒刀之較 - 佳實施流程示意圖。該滾齒刀之形成方法包括有下列步 - 驟·首先’提供一基材’該基材可為南速鋼或者是焉碳鋼 等材料。請參閱圖四所示，該圖係為本發明製作滾齒刀之 切削加工滾齿刀本體側視不意圖；以步驟4 0 ’以一切削加 • 工程序形成複數個容屑槽32於該基材上以形成一滚齒刀 本體30。該容屑槽32可以利用銑刀或者是滚齒刀來進行 200804018 加工。從圖四中可以看出刺用切削加卫形成複數個容屑样 32之後’接者在每一個容屑槽32上形成一凹槽如1，= 齒刀本體30轴心區域更具有一軸套％。 接下來進行步驟41，如圖五所示，將複數個切刃片扔 ===該凹槽3⑽巾。該切刃片35與該録刀本體 3〇間具有硬焊材料，該切刀片35為一長方體之形狀，作 不在此限，嵌入於該凹槽3〇1中；該硬焊材料為合金 例如：可以選擇為鎳（Ni)、硼（B)、鎘（Cr)、鐵（Fe)、矽（以）、 碳（C)、磷（P)、錳(Mn)所組成的群組以形成的合金材^，、 但不在此限。然後置入於真空硬焊爐中，進行高溫之’一真 空硬焊程序，使該切刃片35透過硬焊合金在高溫真空過程 ^ 乂亥滾齒刀本體3〇本身之金屬材料進行擴散結合，使該 切刃片24連接於該容屑槽32之一側面上的滾齒刀本體3〇 〜以^成抗拉強度大，氣禮、性佳之一待加工本體。在本 ^施步驟中，該真空硬焊蘀序的過程中，還有一個特色即 疋在真空硬焊的過程中，也可以對該滾齒刀本體30進行熱 處理的程序。如此，可以簡化習用技術中還要額外對材料 進行熱處理之製程。 、 ’ 之後’進行步驟42，對該待加工本體上之複數個切刃 片進行研磨。該步驟中研磨的過程可約分為兩個階段，第 & &對該待加工本體軸心區域的軲套34進行研磨，請參 閱圖丄纟& 一 7 /、Λ所不，研磨過程中包括對該軸套34之内孔343、 /Q Q Γ) 如闻 以及端面341進行研磨。之後進行第二階段研磨， 行研^ 、斤不，在利用研磨刀具5對該切刃片35之表面進 …以處理硬焊程序後切刃片％之刃口分度不均的現 200804018 象。 步驟42之後，再進行步驟43，·對該待加工體進行齒 形鏟磨，形成複數個切削齒33於該待加工本體上，以形成 一滾齒刀3，如圖七所示。形成複數個切削齒之切削方式 可以利用習用之技術達成，在此不做贅述。為了能夠增加 本發明之滾齒刀的使用壽命，在鏟磨形成滚齒刀之後，更 可以將滾齒刀之表面進行鍍膜的步驟。由於本發明係利用 真空硬焊的方式將切刃片連接於滚齒刀本體上，因此該硬 焊材料具有耐高溫之特性，可以承受在鍍膜製程中的溫 度，而不會熔化。 除了前述之方法來製作本發明之滚齒刀結構外，該滾 齒刀的製作方法，也可以利用下列步驟完成··首先，以一 切削加工程序對一基材進行加工以形成一刀具本體，該刀 具本體具有複數個容屑槽，該容屑槽的兩侧具有複數個切 削齒，該容屑槽上對應每一個切削齒之位置更開設有一凹 槽。接著，將切刃體放入於該凹槽中，並填入硬焊材料， 然後置入於真空硬焊爐中，進行高溫之一真空硬焊程序， 使切刃體透過硬焊材料在高温真空過程中與該刀具本體本 身之金屬材料進行擴散結合，使談切刃體連接於該切削齒 上，以形成抗拉強度大，氣密性佳之滾齒刀。然後進行研 磨切刃體以及鍍膜的步驟，其細節如前所述，在此不做贅 述。該基材為高速鋼或高碳鋼材料。該切刀體係為一鎢鋼 材料，該該硬焊材料為合金材料，例如：可以選擇為鎳 (Ni)、硼（B)、鎘（Cr)、鐵（Fe)、矽（Si)、碳（C)、磷(P)、 猛（Μη)所組成的群組以形成的合金材料，但不在此限σ 200804018 在本實施步驟中，該真空硬焊程序的過程中，還有一 個特色即是在真空硬焊的過程中，也可以對該刀具本體進 行熱處理的程序。如此，可以簡化習用技術中還要另外對 材料進行熱處理之製程。本方法與圖三所示之較佳實施例 之差異在於，圖三之實施例係將切刃片先利用真空硬焊的 方式連接到刀具之本體，再進行切削齒鏟磨，而本方法係 將順序進行掉換，先鏟磨切削齒，再將配合該切削齒之切 刃體利用真空硬焊連接至切削齒上。 唯以上所述者，僅為本發明之較佳實施例，當不能以 之限制本發明範圍。即大凡依本發明申請專利範圍所做之 均等變化及修飾，仍將不失本發明之要義所在，故都應視 為本發明的進一步實施狀況。 本發明提供之滚齒刀及其形成方法，其係具有硬度 高、生產成本低之優點。因此足以滿足業界之需求，進而 提高該產業之競爭力，誠已符合發明專利法所規定申請發 明所需具備之要件，故爰依法呈提發明專利之申請，謹請 貴審查委員允撥時間惠予審視，並賜準專利為禱。 【圖式簡單說明】 圖一 A係為習用之機械固定式之齒輪加工刀具示意圖。 圖一B習用之刀具局部剖面示意圖。 圖二係為本發明之滾齒刀之較佳實施例示意圖。 圖三係為本發明之製作滾齒刀之較佳實施流程示意圖。 圖四係為本發明製作滚齒刀之切削加工滾齒刀本體侧視示 200804018 「意圖。 \ 圖五係為本發明製作滾齒刀之待加工體側視示意圖。 圖六A係為本發明製作滾齒刀之研磨轴套示意圖。 ， 圖六B係為本發明製作滾齒刀之研磨切刃體示意圖。 - 圖七係為本發明製作滾齒刀之加工形成複數個切削齒示意 圖。 馨 【主要元件符號說明】 1- 刀具 ' 10 -滚齒刀本體 -. 11-容置槽 12- 螺紋結構 13- 刀刃片 14- 固定件 2- 刀具 » 20 -滾齒刀本體 2卜刀刃 3 -滚齒刀 3 0 -滾齒刀本體 … 301-凹槽 - 31-切刃體 32-容屑槽 3 3 -切削齒 13 200804018 34-轴套 \ 341-端面 342-肩部 - 343-内孔 - 35-切刃片 4-滾齒刀形成方法 40〜43-流程 _ 5-研磨刀具200804018 IX. Description of the Invention: [Technical Field] The present invention relates to a tool and a method of forming the same, and more particularly to a tool for forming a high-hardness cutting edge on the cutting tooth side of a hobbing cutter by brazing. A hobbing cutter and a forming method thereof. [Prior Art] Φ Gear is an important component of power transmission. It plays an important role in the process of human life and industrial evolution, and can be said to be the basic element of human process development. In general, there are many methods for manufacturing gears, which can be roughly classified into cutting or manufacturing methods such as precision casting, precision forging, extrusion, and powder metallurgy. However, in order to be economically and efficiently mass-produced, the method of forming gears by cutting has become the mainstream of market technology development. Among them, the hobbing cutter for machining gears is indispensable in the cutting process. The development of Φ hobbing cutters can be said to be the development of materials. The development of tool materials has gradually changed from traditional high carbon steel and high speed steel to carbonization. Tungsten, ceramics and diamonds. The hobbing cutter materials of the conventional technology are mostly carbon steel or idle steel. However, when machining high hardness materials (such as HRC 40 degrees or higher), the hobbing cutter made of high speed steel is the processing effect and life. Ignore it: Think. In order to solve this problem, the hob material has gradually evolved to a material having a high hardness, such as a tungsten carbide material. However, since the entire hobbing cutter is formed by using tungsten carbide material, the overall cost of the cutter is quite high, which is a burden for the gear producer. 200804018 ‘In order to reduce costs, the way to set high-hardness knives at the cutting edge of the hobbing cutter has become a way to reduce costs. The methods used to make such tools can be roughly classified into mechanically fixed and welded. In the method of the two mechanically fixed type, a tool disclosed in U.S. Patent No. 3, 740, 808, which is shown in Fig. 1A, is a conventional mechanically fixed gear processing tool. schematic diagram. The body 10 of the tool 1 has a plurality of accommodating grooves 11 each having a threaded structure 12 therein. Then, the blade 13 is disposed in the accommodating groove 10 and the blade is fixed by the fixing member 14. The sheet 13 is fixed to the thread structure 12 in the accommodating groove 11. Although the tool 1 can avoid the south cost problem caused by the overall carbonized crane material, the engineering of the tool is cumbersome and complicated to process, thus incurring an increase in cost. The other way is the welding type, as shown in Fig. 1B, which is a partial cross-sectional view of a conventional tool. The blade 21 having a high hardness on the cutter 2 is fixed to the hobbing cutter body 20 by welding. However, in the tool 2 formed by the above-described welding technique, the solder is melted by the high temperature in the coating process when the tool 2 is subjected to the coating process, so that the blade 21 cannot be fixed to the hobbing blade body 20. Therefore, the tool formed by welding is conventionally used, and the process of coating cannot be performed, so that the service life of the tool is affected. ♦ To sum up the above, there is a need for a hobbing cutter and its formation method to solve the problems caused by the conventional technology. SUMMARY OF THE INVENTION The main object of the present invention is to provide a hobbing cutter and a method for forming the same, which are formed by vacuum brazing on a tooth side of a hobbing cutter to form a cutting edge 200804018 w blade, thereby increasing tool life and Reduce the manufacturing cost of high-hardness hobbing cutters'. A secondary object of the present invention is to provide a hobbing cutter and a method of forming the same, which utilizes the temperature during vacuum brazing to heat the substrate of the hobbing cutter to reduce the process and reduce the manufacturing cost. purpose. Another object of the present invention is to provide a hobbing cutter and a method of forming the same that form a plurality of grooves in a chip pocket to provide a tangential cutter blade for the purpose of providing a good fixing effect. In order to achieve the above object, the present invention provides a hobbing cutter comprising: a hobbing cutter body and a plurality of cutting edges. The hobbing cutter body has a plurality of chip pockets, and the chip pockets have a plurality of cutting teeth on both sides. The plurality of cutting edges are connected to the plurality of cutting teeth by a brazing material. Preferably, the chip pocket is further provided with a plurality of grooves, and each groove corresponds to each of the cutting teeth. Wherein the cutting edge system is embedded in the groove and connected to the hobbing cutter body by the brazing material. Preferably, the cutting edge system is a tungsten steel material. Preferably, the brazing material is a brazing alloy material. In order to achieve the above object, the present invention further provides a method for forming a hobbing cutter, which comprises the following steps: first, forming a plurality of chip flutes on a substrate by a cutting process; and then, a vacuum brazing process, wherein - a plurality of cutting blades are respectively attached to one side of the plurality of chip pockets to form a body to be processed; finally, a plurality of cutting teeth are formed on the body to be processed to A hobbing cutter is formed, and one of the 200804018 blades is formed on one side of the cutting tooth. Preferably, the cutting program further includes forming a recess in the chip pocket and then inserting the cutting blade into the recess. Preferably, the vacuum brazing process further comprises the step of heat treating the substrate. Preferably, the method of forming the hobbing cutter further comprises the step of coating the surface of the hobbing blade. Preferably, the method of forming the hobbing cutter further comprises the step of grinding a plurality of cutting blades on the body to be processed. In order to achieve the above object, the present invention further provides a method for forming a hobbing knife. First, a substrate is processed by a cutting process to form a tool body having a plurality of chip pockets. There are a plurality of cutting teeth on both sides of the groove. Then, a plurality of cutting edges are respectively connected to one side of the plurality of cutting teeth by a vacuum brazing process. • [Embodiment] In order to enable the reviewing committee to have a further understanding and understanding of the features, objects and functions of the present invention, the related details of the system, the structure and the design of the system of the present invention are explained below. The reviewer can understand the characteristics of the present invention, and the detailed description is as follows: 'Please refer to FIG. 2, which is a schematic diagram of a preferred embodiment of the hob cutter of the present invention. The hobbing cutter 3 includes a hobbing cutter body 30 and a plurality of cutting edges 31. The hobbing cutter body 30 has a plurality of chip pockets 32 around the axial direction thereof, and the chip pockets 32 have a plurality of cutting teeth 33 on both sides. The heat sink 200804018 can be a straight-edged chip flute or a spiral chip flute having a helix angle with the central axis of the hobbing cutter body 30, wherein the flute groove has a straight edge shape. The knives can be used to machine the spur gears; and the spur pockets can be machined to form a spur gear with a helix angle. A plurality of grooves 301 are further formed in the chip groove 32. The plurality of cutting edges 31 are disposed in the recess 301. The plurality of cutting edges 31 and the hobbing cutter body 30 are separated by a brazing material (not shown) and the plural The cutting teeth 33 are connected. Since the present invention is characterized in that a relatively inexpensive material such as high-speed steel or high-carbon steel is used as the material of the hobbing cutter body 30, then a tungsten steel material having a higher hardness is used as the cutter body 31. material. In this way, not only can the difficulty of machining high-hardness hobbing cutters 3 (such as tungsten steel hobbing cutters) be reduced. In addition, the cost of the hobbing cutter 3 of the present invention is comparable to the cost of the hobbing cutter of the tungsten steel material as a whole material, which is much cheaper and can provide a considerable processing effect. There are many types of brazing materials, which can be obtained in the conventional techniques. Usually, the brazing material is an alloy material, for example, nickel (Ni), boron (B), cadmium (Cr), iron (Fe) ), an alloy material formed by a group consisting of cerium (Si), carbon (C), phosphorus (P), and manganese (Mn). Please refer to FIG. 3, which is a schematic diagram of a better implementation process of the hobbing cutter of the present invention. The method of forming the hobbing cutter includes the following steps: First, a substrate is provided. The substrate may be a material such as a south speed steel or a bismuth carbon steel. Referring to FIG. 4, the figure is a side view of the cutting hobbing cutter body for making a hobbing cutter according to the present invention; a plurality of chip pockets 32 are formed by a cutting and adding procedure in step 40' A hobbing cutter body 30 is formed on the substrate. The chip pocket 32 can be machined using a milling cutter or a hobbing cutter for 200804018. It can be seen from Fig. 4 that after the knives are formed into a plurality of chip-like dies 32, the splicer forms a groove on each of the chip pockets 32, such as 1, and the shaft region of the tooth cutter body 30 has a sleeve. %. Next, step 41 is performed. As shown in FIG. 5, a plurality of cutting blades are thrown === the groove 3 (10). The cutting blade 35 and the recording blade body 3 have a brazing material, and the cutting blade 35 has a rectangular parallelepiped shape, and is not limited thereto, and is embedded in the groove 3〇1; the brazing material is an alloy such as : can be selected from the group consisting of nickel (Ni), boron (B), cadmium (Cr), iron (Fe), bismuth (by), carbon (C), phosphorus (P), manganese (Mn) to form The alloy material ^, but not limited to this. Then, it is placed in a vacuum brazing furnace to perform a high-temperature 'vacuum brazing process, so that the cutting blade 35 is diffused and bonded through the brazing alloy in a high-temperature vacuum process ^ 乂 滚 hobbing body 3 itself The knives body 3 连接 使 该 连接 连接 之一 之一 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 In the present application step, during the vacuum brazing process, there is also a feature that the hobbing blade body 30 can be heat-treated during the vacuum brazing process. In this way, it is possible to simplify the process of additionally heat-treating the material in the conventional technology. Then, 'after', step 42 is performed to grind a plurality of cutting blades on the body to be processed. The grinding process in this step can be divided into two stages, the &&&&&&&&&&&<> The process includes grinding the inner holes 343, /QQ Γ) of the sleeve 34 and the end surface 341. After that, the second stage of grinding is carried out, and the grinding is performed on the surface of the cutting blade 35 by using the grinding tool 5 to process the hard welding program, and the edge of the cutting edge piece is unevenly distributed. . After the step 42, the step 43 is further performed, and the body to be processed is subjected to tooth shovel to form a plurality of cutting teeth 33 on the body to be processed to form a hobbing blade 3, as shown in FIG. The cutting method for forming a plurality of cutting teeth can be achieved by using conventional techniques, and will not be described herein. In order to increase the service life of the hob cutter of the present invention, after the hobbing to form the hobbing cutter, the surface of the hobbing cutter can be coated. Since the present invention connects the cutting blade to the hobbing blade body by vacuum brazing, the brazing material has a high temperature resistance and can withstand the temperature in the coating process without melting. In addition to the foregoing method for fabricating the hobbing cutter structure of the present invention, the method of manufacturing the hobbing cutter can also be completed by the following steps: First, a substrate is processed by a cutting process to form a cutter body. The tool body has a plurality of chip cavities, and the chip flutes have a plurality of cutting teeth on both sides thereof, and a groove is formed in the chip flute corresponding to the position of each of the cutting teeth. Next, the cutting blade body is placed in the groove, filled with the brazing material, and then placed in a vacuum brazing furnace, and a vacuum hard soldering process is performed to pass the cutting blade body through the brazing material at a high temperature. During the vacuum process, the metal material of the tool body itself is diffusion-bonded, and the cutting blade body is connected to the cutting teeth to form a hobbing cutter with high tensile strength and good air tightness. Then, the steps of grinding the cutting blade and the coating are carried out, the details of which are as described above, and will not be described here. The substrate is a high speed steel or high carbon steel material. The cutter system is a tungsten steel material, and the brazing material is an alloy material, for example, nickel (Ni), boron (B), cadmium (Cr), iron (Fe), bismuth (Si), carbon (C), phosphorus (P), fierce (Μη) group to form the alloy material, but not limited to this σ 200804018 In this implementation step, in the process of the vacuum brazing process, there is another feature It is a process of heat-treating the tool body during vacuum brazing. In this way, it is possible to simplify the process of additionally heat-treating the material in the conventional technology. The difference between the method and the preferred embodiment shown in FIG. 3 is that the embodiment of FIG. 3 connects the cutting blade to the body of the tool by vacuum brazing, and then performs cutting and shovel grinding, and the method is The sequence is reversed, the cutting teeth are first shoveled, and the cutting edge body that matches the cutting teeth is connected to the cutting teeth by vacuum brazing. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is, the equivalent changes and modifications made by the present invention in the scope of the present invention will remain without departing from the scope of the present invention, and therefore should be considered as further implementation of the present invention. The present invention provides a hobbing cutter and a method of forming the same, which have the advantages of high hardness and low production cost. Therefore, it is sufficient to meet the needs of the industry, and thus to enhance the competitiveness of the industry. Since the invention has met the requirements for applying for inventions as stipulated in the invention patent law, it is necessary to submit an application for invention patents according to law. Examine and grant the patent as a prayer. [Simple description of the diagram] Figure 1 A is a schematic diagram of a mechanically fixed gear machining tool. Figure 1B is a partial cross-sectional view of a conventional tool. Figure 2 is a schematic view of a preferred embodiment of the hob cutter of the present invention. FIG. 3 is a schematic flow chart of a preferred embodiment of the production of the hobbing cutter of the present invention. Figure 4 is a side view of the cutting hobbing cutter body of the hobbing cutter of the present invention. 200804018 "Intention. Fig. 5 is a side view of the body to be processed for making a hobbing cutter according to the present invention. Fig. 6A is a view of the present invention Schematic diagram of the grinding bushing for making a hobbing cutter. Fig. 6B is a schematic view of the grinding cutting blade body of the hobbing cutter of the present invention. - Figure 7 is a schematic view of forming a plurality of cutting teeth by machining the hobbing cutter of the present invention. [Description of main component symbols] 1-Tool '10 - Hobbing cutter body -. 11-Receiving groove 12- Threaded structure 13 - Blade 14 - Fixing member 2 - Tool » 20 - Hobbing cutter body 2 blade 3 - Hobbing cutter 3 0 - hobbing cutter body... 301-groove - 31-cutting body 32-chip pocket 3 3 - cutting tooth 13 200804018 34- bushing\341-end face 342-shoulder-343- bore - 35-Cutting Blade 4-Rolling Knife Forming Method 40~43-Flower_ 5-Grinding Tool