1253362 ^--- 五、發明說明（1) 【發明所屬之技術領域】 本發明係關於切削刀具，於 銳刀，其刀身可為直筒螺旋狀nj關於螺旋狀的球端 本發明有關於-種螺旋狀的橢刃】大等。特定而言 更傾斜面的傾斜角及刀身螺於&、 /東碥銑刀，可透過變 度，如斜角、隙角及楔角等，以形成所需要的刀具角 【先前技術】 習知的球端銑刀是機械製造 用廣泛之銑削刀具，通常一支端刀^ 航太工業使 螺旋槽研磨六道次與球端部研㈡：的，研磨可分成 段二:r槽第—段；(2)研磨螺旋槽第二 磨ίΐ 研磨螺旋槽第一離隙面；（7)研 球浐邱钭s. η ^月=，（9)粗磨球端部斜面；（1 〇)精磨 ，（11)研磨球端部第二離隙面；（12)研磨球端 隙面。研磨道次依序如第1圖（A)〜（L)所示，因此 =勺間化研磨道次即能節省時間及成本。球端銑刀之切 丨二=可概分為直線切刀（如第2圖(Α))，及8形切刀（第2 :⑻)兩種。S形切刃必須用三次元動作研磨，因此其成 ^研磨過程較直切刃者繁複、耗費時間且精確度掌控不 f，研磨成本較高；但以切削性能之觀點來看，直切刀端 ，刀在切削時切刃是瞬間同時接觸工件，切刀容易因衝擊 力而崩裂，且切削性能較差，而s形切刀則是徐徐的切1253362 ^--- V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a cutting tool, and in the sharp knife, the blade body can be a straight spiral shape nj with respect to a spiral ball end. The spiral elliptical blade is larger. In particular, the angle of inclination of the more inclined surface and the blade screw in the &, / boring cutter, can pass the variability, such as the bevel angle, the clearance angle and the wedge angle, etc., to form the required tool angle. [Prior Art] Known ball end mills are widely used in the manufacture of milling tools, usually a single end knife ^ Aerospace industry makes the spiral groove grinding six passes and ball end grinding (two):, grinding can be divided into two segments: r trough section (2) grinding spiral groove second grinding ΐ 研磨 grinding spiral groove first relief surface; (7) grinding ball 浐 Qiu 钭 s. η ^ month =, (9) coarse grinding ball end slope; (1 〇) fine Grinding, (11) grinding the second relief surface of the ball end; (12) grinding the ball end surface. The grinding passes are sequentially shown in Fig. 1 (A) to (L), so that the time between the scribing and the grinding pass can save time and cost. Cutting of the ball end mill 丨 2 = can be divided into linear cutter (such as Figure 2 (Α)), and 8-shaped cutter (2: (8)). The S-shaped cutting edge must be ground by a three-dimensional action, so the grinding process is more complicated than the straight cutting edge, time-consuming and precise, and the grinding cost is high; but from the viewpoint of cutting performance, the straight cutting knife At the end, the cutting edge of the knife is instantaneously touching the workpiece at the same time, the cutter is easily broken by the impact force, and the cutting performance is poor, and the s-shaped cutter is slowly cutting.
1253362 五、發明說明（2) 八，所以衝擊力較直切刃者小，切削性能較佳。 曰本專利公報（A p P 1 ication number :56-126513)提 出/種解決方式，在此方式中，刀具切刃係位於橢圓柱面 上，因此稱為”柱式橢圓刃球端銑刀”，無螺旋槽是其主 要特色，見第3圖（A)為此刀具A之側視圖，A1為其切削 部，切削部A1之截面形狀是橢圓形，刀具端面是二傾斜面 A i 1且與中心軸夾一傾斜角A丨3並與半徑A丨2之端部球面相 交形成切刃，俯視圖如第3圖（B)，此刀具端部放大透視圖 ^! 3Λ( ci ： ^ ^ ® ^ ^ ^ ^ ^ ^ ^ ^ t :二ίΐ間早部及刀身部皆無螺旋槽，力具成型研 η,:需四個道次：粗磨橢圓柱面、精磨橢圓柱 磨成正確的幾何形Γ:刃：：=刀具較容易研 面（傾钭面川、Γί ㈤時刀刀位於同一平 田、傾斜面All )上有利於檢測。 雖然柱式橢圓刃球端鏃 使得成型研磨容易，但此刀且東端銑刀的功能，並 3得切刃幾何形狀變化有限，較固定的设计’ 丨條件，且切削部A1位於俯 ;;去滿足各種不同的切削 -步:==升：：柱式擴圓刀球端銳刀在設計上需要進 發明内容】 目的為提供一新式 基於解決上述之缺點’本發明之一1253362 V. Description of invention (2) Eight, so the impact force is smaller than that of the straight cutting edge, and the cutting performance is better.曰 This patent publication (A p P 1 ication number: 56-126513) proposes a solution, in which the cutting edge of the tool is located on the elliptical cylinder surface, so it is called "column elliptical edge ball end mill" The spiral groove is the main feature. See Figure 3 (A) for the side view of the tool A. A1 is the cutting portion. The cross-sectional shape of the cutting portion A1 is elliptical, and the end face of the tool is the two inclined faces A i 1 and Clamp an angle of inclination A丨3 with the central axis and intersect the spherical surface of the radius A丨2 to form a cutting edge. The top view is shown in Fig. 3(B), and the end of the tool is enlarged and enlarged. ^! 3Λ ( ci : ^ ^ ® ^ ^ ^ ^ ^ ^ ^ ^ t : There are no spiral grooves in the early part of the two sides and the blade body. The force is formed by η,: four passes are required: coarsely polished elliptical cylinders, finely ground elliptical cylinders are ground into the correct geometry. Shape: Blade::=The tool is easier to grind the surface (the knife is located on the same flat field and the inclined surface All) when it is tilted, and the column elliptical ball end is easy to form and grind. This knife and the function of the eastern end milling cutter, and the 3 cutting edge geometry change is limited, the fixed design '丨 condition, and cutting A1 is located in the lower direction; to meet a variety of different cutting-steps: == liter:: column-type rounding knife ball end sharp knife in the design needs to be invented] The purpose is to provide a new formula based on solving the above disadvantages 'the invention One
第6頁 1253362 五、發明說明（3) 的螺旋球端鍊刀，你、、 — " 削動作平順。本發明1 ^ ^銑刀與錐球端銑刀，以使得切 刃球端銑刀，刀身為目的為提供一種改良式的橢圓 性。 累疋狀，以增進刀具的對稱性及剛 確度易G目：以球;銑刀，本發明之再—目的為精 研磨：驟及快速的重新磨擊、降低成本、簡化成型 本創作如第4圖带-7 刃衝擊小、研磨方法不’ 7襲柱式橢圓刃球端銑刀之切 .•之切刀曲線為橢圓之；八曲二點。此刀具之特徵為俯視圖 使用上的特3σ ^ 、、泉，可具有兩個或多個螺旋。 磨平，同磨容易，重新磨銳僅需將傾斜平面 性、對“33 =圓刀球端銳刀的切削性能及剛 i=r其他常見…。應了:到：=二 田、有兩個螺旋槽之螺旋橢圓刀球端銑刀，其創新概令高 :任何多個螺旋槽之螺旋橢圓刃球刀；： =圖，⑴所示，球端銳刀本㈣含’螺= %…部13及柄部14，對於習知此項技術者而言， 柄^14係用以嵌入並固定於銑床或其他工具機之心軸内， 二二4 I以是直柄或是錐柄。因為柱式橢圓刃球端銑刀之 二二，"具軸心，切削力不對稱於刀具心軸，所以切削 才示了生扭距之外，還會產生彎距，當刀具高速旋轉時 第7頁 1253362 五、發明說明（4) 谷易產生陡展’影響切削品質及刀具哥命。本發明刀具之 兩個螺旋部1 1及1 2分別位於中心轴線C A兩側，主要功能係 用以形成切刃，並解決柱式橢圓刃球端銑刀之對稱性不足 的問題，連結部1 3則用於增加刀具本體剛性。本發明刀具 端部的側視圖如第4圖（C )所示，其特徵為刀端部球面半 徑1 5 ;螺旋部1 1、1 2及連結部1 3由柄1 4延伸至端面，螺旋 部11及1 2之端面是傾斜面111及1 2 1，此二傾斜面與中心軸 線C A夾一角度1 6，且與刀端部球面分別相交而形成第一切 刃1111、第二切刃1112、第三切刃1211及第四切刃1212。 ►四條切刃曲線皆是橢圓的部分曲線，其中第一切刃丨丨丨丨通 過刀尖點，為了使得四條切刃可達到”全有效”球面切削， 鄰近切刃間有重疊丨丨丨3及丨2 1 3，如第4圖（B )所示。雖然 七刀37之間可為重疊或非重疊狀態，本發明之鄰接刀刃間有 重疊狀態’但是無重疊狀態之切削刃亦為本發明之一部 分。 【實施方式】 將此刀具的幾何外形設計好之後，成型研磨步驟如 >下：（1)修整研磨輪外形；（2 )研磨螺旋槽第一段；（3 )研 磨螺旋槽第二段；（4)研磨螺旋槽第三段；（5 )粗磨傾斜 面；（6 )精磨傾斜面。設計及成型研磨總體流程圖見第5 圖。首先’在設計階段吾人可依需求決定刀具的螺旋角、 刀具的截面形狀（包括螺旋部11、1 2及連結部1 3 )，並以 鑽石修整器修整所需研磨輪外形，如第6圖所示；接著，Page 6 1253362 V. Invention description (3) The spiral ball end chain knife, you, , &" Smoothing action. The 1 ^ ^ milling cutter and the cone end mill of the present invention are intended to provide an improved ellipticality for the purpose of cutting the ball end mill and the blade.疋 , , , , , , , , , , , 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 增进 : : : : : : : : : : : : : : : : : : : : 4Fig. -7 Blade impact is small, the grinding method is not '7 stroked elliptical edge ball end milling cutter. · The cutting curve is elliptical; eight curved two points. This tool is characterized by a special 3σ ^ , spring, used in the top view, and can have two or more spirals. Smoothing, easy to grind, re-sharpening only need to tilt the flatness, on the "33 = cutting performance of the round knife sharp knife and just i = r other common .... should be: to: = two fields, there are two Spiral groove spiral end mill end mill, its innovative high command: any spiral grooved elliptical ball cutter;: = figure, (1), ball end sharp knife (4) with 'snail = %... The portion 13 and the handle portion 14 are used by those skilled in the art to insert and fix the shaft 14 into a mandrel of a milling machine or other machine tool, such as a straight shank or a taper shank. Because the column elliptical edge ball end mill is two or two, "with the axis, the cutting force is asymmetrical to the tool mandrel, so the cutting shows the bending distance, and the bending distance is generated when the tool rotates at high speed. Page 7 1253362 V. Description of the invention (4) The valley has a steep effect 'affecting the cutting quality and the tool life. The two spirals 1 1 and 1 2 of the tool of the invention are located on both sides of the central axis CA, respectively. Used to form the cutting edge and solve the problem of insufficient symmetry of the column elliptical ball end mill, the joint 13 is used to increase the tool Body rigidity. The side view of the end of the tool of the present invention is shown in Fig. 4(C), characterized in that the blade end has a spherical radius of 15; the spiral portions 1 1 and 12 and the connecting portion 13 extend from the shank 14 to The end faces, the end faces of the spiral portions 11 and 12 are inclined faces 111 and 1 2 1, and the two inclined faces are at an angle of 1.6 with the central axis CA, and intersect with the spherical end of the blade to form a first cutting edge 1111, The second cutting edge 1112, the third cutting edge 1211 and the fourth cutting edge 1212. ► The four cutting edge curves are partial curves of the ellipse, wherein the first cutting edge 丨丨丨丨 passes through the cutting edge point, in order to make the four cutting edges reachable "Full effective" spherical cutting, with overlapping 丨丨丨3 and 丨2 1 3 between adjacent cutting edges, as shown in Fig. 4(B). Although the seven knives 37 may be in an overlapping or non-overlapping state, the present invention A cutting edge having an overlapping state between adjacent blades is also part of the invention. [Embodiment] After the geometry of the tool is designed, the forming and grinding steps are as follows: (1) Trimming the shape of the grinding wheel (2) grinding the first section of the spiral groove; (3) grinding the second section of the spiral groove; (4) grinding The third section of the spiral groove; (5) rough grinding inclined surface; (6) fine grinding inclined surface. The overall flow chart of design and forming grinding is shown in Figure 5. First of all, 'in the design stage, we can determine the helix angle of the tool and the tool according to the requirements. The cross-sectional shape (including the spiral portion 11, 12 and the joint portion 13), and the desired shape of the grinding wheel is trimmed with a diamond dresser, as shown in Fig. 6;
第8頁 1253362 五、發明說明（5) 在萬能工具磨床或CNC工具磨床研磨螺旋槽，如第7圖所 示；最後，可於萬能工具磨床或在CNC工具磨床設定好傾 斜面之角度並研磨傾斜面，如第8圖所示。在螺旋槽的研 磨方面，本發明刀具僅需三個道次，比習知的球端銑刀可 節省三個道次；在球端部的研磨方面，本發明銑刀僅需粗 磨及精磨傾斜面兩個道次，比習知的球端銑刀可節省四個 道次。 當刀具使用到一段時間後，切刃會產生微崩及磨耗， 此刻刀具需要重新磨銳，只要將傾斜面往螺旋方向磨平至 ⑯微崩及磨耗區不見為止，同第8圖之研磨動作，此螺旋動 作之節距與切刃螺旋線相同，因此重新磨銳比習知的球端 銑刀節省五個道次。Page 8 1253362 V. INSTRUCTIONS (5) Grinding the spiral groove in the universal tool grinding machine or CNC tool grinding machine, as shown in Figure 7; finally, the angle of the inclined surface can be set and ground on the universal tool grinding machine or the CNC tool grinding machine. Inclined surface, as shown in Figure 8. In terms of grinding of the spiral groove, the tool of the invention only needs three passes, which saves three passes compared with the conventional ball end mill; in the grinding of the ball end, the milling cutter of the invention only needs coarse grinding and fine grinding. Grinding the inclined surface in two passes saves four passes compared to conventional ball end mills. When the tool is used for a period of time, the cutting edge will be slightly collapsed and worn. At this point, the tool needs to be sharpened again. As long as the inclined surface is flattened in the spiral direction to 16 micro-collapse and the wear zone is missing, the grinding action in Figure 8 is the same. The pitch of this spiral action is the same as the cutting edge spiral, so re-sharpening saves five passes compared to conventional ball end mills.
第9頁 1253362 圖式簡單說明 【圖式簡單說明】 為了讓本發明之特徵及優點更易明暸，配合所附圖式 詳細說明，其中： 第1圖（A)〜（L)係習知的球端銑刀之成型研磨步驟； 第2圖（A ) 、 （ B )係習知的直切刃與S切刃球端銑刀之端 視圖， 第3圖（A ) 、 （ B )及（C )係柱式橢圓刃球端銑刀之端視 圖、側視圖及球端部放大透視圖； 第4圖（A ) 、 （ B )及（C )係本發明刀具之透視圖、俯視 , 圖及球端部側視圖，Page 9 1253362 Brief description of the drawings [Simplified description of the drawings] In order to make the features and advantages of the present invention more comprehensible, the detailed description of the drawings will be made in the accompanying drawings, wherein: Figure 1 (A) - (L) is a conventional ball. Forming and grinding step of end mill; Fig. 2 (A), (B) are end views of conventional straight and S-cut ball end mills, Fig. 3 (A), (B) and (C) End view, side view and enlarged end view of the ball end of the column-type elliptical edge ball end mill; Figure 4 (A), (B) and (C) are perspective views, top views, and drawings of the tool of the present invention Side view of the ball,
第5圖係 本 發 明 刀 具 之 成 型 研 磨 流 程 圖 ; 第6圖係 本 發 明 刀 具 使 用 的 研 磨 輪 其 修 整方法示意圖 第7圖係 本 發 明 螺 旋 槽 之 研 磨 方 法 ， 第8圖係 本 發 明 刀 具 之 傾 斜 面 研 磨 示 意 圖。 【主 要元件符號說明】 A 柱 式 橢 圓 刃 球 端 銑 刀 之 本 體 A1 柱 式 橢 圓 刃 球 端 銑 刀 之 切 削部 All 柱 式 橢 圓 刃 球 端 銑 刀 之 傾 斜 面 A12 柱 式 橢 圓 刃 球 端 銑 刀 之 球 面 半 徑 A13 柱 式 橢 圓 刃 球 端 銑 刀 傾 斜 面 之 傾 斜角 1 本 發 明 球 端 銳 刀 刀 具 主 體 11 螺 旋 部 12 另一螺旋部 13 聯 結 部 14 柄告P5 is a flow chart of forming a grinding tool of the present invention; FIG. 6 is a schematic view showing a dressing method of a grinding wheel used in the tool of the present invention; FIG. 7 is a grinding method of the spiral groove of the present invention, and FIG. 8 is an inclined surface of the cutting tool of the present invention; Grinding schematic. [Main component symbol description] A column type elliptical edge ball end mill body A1 column elliptical edge ball end milling cutter cutting section All column elliptical edge ball end milling cutter inclined surface A12 column elliptical edge ball end milling cutter Spherical radius A13 Column angle elliptical edge ball end mill inclined surface tilt angle 1 The ball end sharp knife tool body 11 of the present invention Spiral portion 12 Another spiral portion 13 Joint portion 14 handle P
第10頁 1253362 圖式簡單說明 15 刀具球面半徑 111 傾斜面 1111 第一切刃 1 2 1 1 第三切刃 2 研磨螺旋槽之研磨輪 4 研磨傾斜面之研磨輪 16 傾斜面的傾斜角 121 另一傾斜面 1 1 1 2 第二切刃 1 2 1 2 第四切刃 3 研磨輪修整器 CA 刀具中心軸Page 10 1253362 Brief description of the drawing 15 Tool spherical radius 111 Inclined surface 1111 First edge 1 2 1 1 Third cutting edge 2 Grinding wheel of grinding spiral groove 4 Grinding wheel of grinding inclined surface 16 Tilt angle of inclined surface 121 One inclined surface 1 1 1 2 Second cutting edge 1 2 1 2 Fourth cutting edge 3 Grinding wheel dresser CA Tool center axis
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