TWI808260B - End mill and manufacturing method thereof - Google Patents
End mill and manufacturing method thereof Download PDFInfo
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- TWI808260B TWI808260B TW108134245A TW108134245A TWI808260B TW I808260 B TWI808260 B TW I808260B TW 108134245 A TW108134245 A TW 108134245A TW 108134245 A TW108134245 A TW 108134245A TW I808260 B TWI808260 B TW I808260B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
- B23B27/20—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing with diamond bits or cutting inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1009—Ball nose end mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/34—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Glass Compositions (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Disintegrating Or Milling (AREA)
Abstract
提供如下之端銑刀、及其之簡便的製造方法:雖然為小徑,但複數個切割刀刃仍可良好地安裝於主體,且強度及耐久性佳。本發明之端銑刀具有:主體,設有複數個埋入部且以旋轉軸為中心旋轉;複數個切割刀刃,分別埋入於複數個埋入部來固定且作為最外徑而構成。此端銑刀是切割刀刃包含有燒結鑽石,切割刀刃之螺旋角為0°,外徑低於10mm。切割刀刃是以切割刀刃之延長線不通過旋轉軸的方式,埋入於埋入部並固定。本發明之端銑刀的製造方法包含以下步驟:將切割刀刃埋入於主體之埋入部;及在將切割刀刃埋入於埋入部之狀態下,藉由真空硬焊或高週波硬焊而將切割刀刃固定於埋入部。To provide an end mill and a simple manufacturing method thereof in which a plurality of cutting blades can be well attached to the main body despite having a small diameter, and has high strength and durability. The end mill of the present invention has: a main body provided with a plurality of embedded parts and rotating around a rotating shaft; and a plurality of cutting blades respectively embedded in the plurality of embedded parts to be fixed and constituted as the outermost diameter. This end mill is a cutting blade containing sintered diamond, the helix angle of the cutting blade is 0°, and the outer diameter is less than 10mm. The cutting blade is embedded in the embedding part and fixed so that the extension line of the cutting blade does not pass through the rotating shaft. The manufacturing method of the end mill of the present invention includes the following steps: embedding the cutting blade in the embedding part of the main body; and fixing the cutting blade to the embedding part by vacuum brazing or high frequency brazing in the state of embedding the cutting blade in the embedding part.
Description
發明領域 field of invention
本發明是涉及端銑刀及其製造方法。 The present invention relates to an end mill and a manufacturing method thereof.
發明背景 Background of the invention
端銑刀是作為切割工具之1種而廣為人知。代表性而言,端銑刀是具有以旋轉軸為中心旋轉之主體、及安裝在該主體表面之切割刀刃。 End mills are widely known as one type of cutting tool. Typically, an end mill has a main body that rotates about a rotation axis, and a cutting blade attached to the surface of the main body.
先行技術文獻 Prior art literature
專利文獻 patent documents
專利文獻1:日本特開2016-182658號公報 Patent Document 1: Japanese Patent Laid-Open No. 2016-182658
發明概要 Summary of the invention
雖然端銑刀之刃物材質有很多,但本發明人們是檢討使用燒結鑽石刀刃來作為切割刀刃之磨耗對策。雖然通常之端銑刀是對一體之金屬進行削減而刃物成形,但燒結鑽石刀刃是難以藉由削減來形成刀刃,需要另外地安裝到端銑刀之主體。隨著用途不同,有時會要求小徑(例如外徑低於10mm)之端銑刀。如此之小徑之端銑刀常常發生如下之情況:無法在主體充分地確保用於安裝切割刀刃之安裝 面,而難以將切割刀刃安裝於主體。再者,當使用複數個切割刀刃的情況下,切割刀刃之往主體安裝、及、強度與耐久性之確保往往更加困難。 Although there are many materials for the blade of an end mill, the inventors of the present invention have examined the use of a sintered diamond blade as a countermeasure against wear of the cutting blade. Although the usual end mill cuts an integral metal to shape the blade, it is difficult to form the edge by cutting the sintered diamond blade, and it needs to be additionally installed on the main body of the end mill. Depending on the application, an end mill with a small diameter (such as an outer diameter below 10mm) is sometimes required. Such a small-diameter end mill often has the following situation: It is not possible to ensure sufficient mounting for the cutting edge on the main body. surface, and it is difficult to install the cutting blade on the main body. Furthermore, when a plurality of cutting blades are used, it is often more difficult to install the cutting blades to the main body, and to ensure strength and durability.
本發明是為了解決上述習知之課題而建構之發明,其主要目的是提供如下之端銑刀、及其之簡便的製造方法:雖然為小徑,但複數個切割刀刃仍可良好地安裝於主體,且強度及耐久性佳。 The present invention is an invention constructed to solve the above-mentioned conventional problems, and its main purpose is to provide an end mill and a simple manufacturing method thereof in which a plurality of cutting blades can be well attached to the main body despite having a small diameter, and has high strength and durability.
本發明之端銑刀具有:主體,設有複數個埋入部且以旋轉軸為中心旋轉;複數個切割刀刃,分別埋入於該複數個埋入部來固定且作為最外徑而構成。該切割刀刃包含有燒結鑽石,該切割刀刃之螺旋角為0°,外徑低於10mm。該切割刀刃是以該切割刀刃之延長線不通過該旋轉軸的方式,埋入於該埋入部並固定。 The end mill of the present invention has: a main body provided with a plurality of embedded parts and rotating around a rotating shaft; and a plurality of cutting blades respectively embedded in the plurality of embedded parts to be fixed and constituted as the outermost diameter. The cutting blade includes sintered diamond, the helix angle of the cutting blade is 0°, and the outer diameter is less than 10mm. The cutting blade is embedded in the embedding portion and fixed so that the extension line of the cutting blade does not pass through the rotating shaft.
在1個實施形態,上述切割刀刃是以規定出預定角度之斜角的方式而埋入於上述埋入部並固定。 In one embodiment, the cutting blade is embedded in the embedded portion so as to define a bevel at a predetermined angle, and fixed.
在1個實施形態,在上述主體形成基準面,上述基準面是朝相對於上述切割刀刃之延伸方向形成上述預定角度的方向延伸。 In one embodiment, a reference surface is formed on the body, and the reference surface extends in a direction forming the predetermined angle with respect to an extending direction of the cutting blade.
在1個實施形態,在上述主體形成埋入面,上述埋入面是朝與上述基準面之延伸方向交叉的方向延伸。 In one embodiment, an embedding surface is formed on the main body, and the embedding surface extends in a direction intersecting with an extending direction of the reference plane.
在1個實施形態,在上述主體形成埋入面,上述埋入面是朝相對於與上述基準面之延伸方向正交之方向形成上述預定角度的方向延伸。 In one embodiment, an embedding surface is formed on the main body, and the embedding surface extends in a direction forming the predetermined angle with respect to a direction perpendicular to an extending direction of the reference plane.
在1個實施形態,上述切割刀刃是以與上述埋入面正交的方式而埋入於上述埋入部並固定。 In one embodiment, the cutting blade is embedded in the embedded portion and fixed so as to be perpendicular to the embedded surface.
在1個實施形態,上述主體是從上述旋轉軸方向觀看時之上述埋入部之旋轉方向上游側比該埋入部之旋轉方向下游側還要突出。 In one embodiment, the main body protrudes more upstream in the rotational direction of the embedded portion than downstream in the rotational direction of the embedded portion when viewed in the direction of the rotational axis.
在1個實施形態,上述切割刀刃具有以超硬材料構成之基部、及設在該基部之其中一面之燒結鑽石層。 In one embodiment, the cutting blade has a base made of a superhard material, and a sintered diamond layer provided on one side of the base.
在1個實施形態,上述埋入部的深度為0.30mm~1.50mm。 In one embodiment, the depth of the embedded portion is 0.30 mm to 1.50 mm.
在1個實施形態,上述複數個埋入部是設置在相對於上述旋轉軸對稱之位置。 In one embodiment, the plurality of embedded portions are provided at symmetrical positions with respect to the rotational axis.
根據本發明之另一布局,可提供上述端銑刀之製造方法。此製造方法包含以下步驟:將上述切割刀刃埋入於上述主體之上述埋入部;及在將該切割刀刃埋入於該埋入部之狀態下,藉由真空硬焊或高週波硬焊而將該切割刀刃固定於該埋入部。 According to another configuration of the present invention, a method of manufacturing the above-mentioned end mill can be provided. The manufacturing method includes the steps of: embedding the cutting blade in the embedding portion of the main body; and fixing the cutting blade to the embedding portion by vacuum brazing or high-frequency brazing while the cutting blade is embedded in the embedding portion.
在1個實施形態,上述切割刀刃是具有以超硬材料構成之基部、及設在該基部之其中一面之燒結鑽石層,上述製造方法是將該基部及該燒結鑽石層雙方藉由真空硬焊而固定於上述埋入部。 In one embodiment, the cutting blade has a base made of a superhard material and a sintered diamond layer provided on one side of the base, and the manufacturing method is to fix both the base and the sintered diamond layer to the embedded part by vacuum brazing.
在另一實施形態,上述切割刀刃是以燒結鑽石構成,上述製造方法是將該燒結鑽石藉由真空硬焊而固定於上述埋入部。 In another embodiment, the cutting blade is made of sintered diamond, and the manufacturing method is to fix the sintered diamond to the embedded part by vacuum brazing.
根據本發明,在小徑之端銑刀,於主體設有埋入部且將切割刀刃埋入於該埋入部來固定,藉此,可實現切割刀刃良好地安裝於主體、且強度及耐久性佳之端銑刀。再者,以切割刀刃之延長線不通過旋轉軸的方式,將切割刀刃埋入於埋入部並固定,藉此,可更加提升強度及耐久性。結果,即便是使用複數個切割刀刃,亦可實現如上述般之優良之端銑刀。 According to the present invention, a small-diameter end mill is provided with an embedding portion in the main body, and the cutting blade is embedded in the embedding portion to fix the cutting blade. By this, the cutting blade is well attached to the main body, and an end mill having excellent strength and durability can be realized. Furthermore, the cutting blade is buried and fixed in the embedding portion so that the extension line of the cutting blade does not pass through the rotating shaft, thereby further improving the strength and durability. As a result, even if a plurality of cutting blades are used, an excellent end mill as described above can be realized.
10:切割刀刃 10: Cutting blade
10a:刃尖 10a: blade tip
10b:斜面 10b: Bevel
10c:間隙面 10c: Clearance surface
11:基部 11: base
12:燒結鑽石層 12: Sintered diamond layer
20:主體 20: subject
20d:下游側的部分 20d: part on the downstream side
20u:上游側的部分 20u: part on the upstream side
22:旋轉軸 22: Rotation axis
24:埋入部 24: Embedded part
26:基準面 26: Reference plane
28:埋入面 28:Buried surface
30:屑穴 30: chip hole
100~105:端銑刀 100~105: end mill
200:工件 200: workpiece
200a、200b、200c、200d:外周面 200a, 200b, 200c, 200d: outer peripheral surface
200E、200F、200G、200H:倒角部 200E, 200F, 200G, 200H: chamfering
200I:凹部 200I: concave part
d、d1、d2:深度 d, d1, d2: Depth
E:切割刀刃之延長線 E: Extension line of cutting blade
R:旋轉方向 R: direction of rotation
α:斜角 α: Bevel
β:間隙角 β: clearance angle
γ:刃尖角 γ: blade tip angle
圖1(a)是用於說明本發明之1個實施形態之端銑刀之構造的從軸方向觀看之概略平面圖;圖1(b)是圖1(a)之端銑刀的概略立體圖。 Fig. 1(a) is a schematic plan view viewed from the axial direction for explaining the structure of an end mill according to an embodiment of the present invention; Fig. 1(b) is a schematic perspective view of the end mill in Fig. 1(a).
圖2(a)~圖2(e)分別是用於說明本發明之其他實施形態之端銑刀之構造的從軸方向觀看之概略平面圖。 2(a) to 2(e) are schematic plan views viewed from the axial direction for explaining the structure of an end mill according to another embodiment of the present invention, respectively.
圖3是顯示可藉由使用本發明之實施形態之端銑刀的光學薄膜之製造方法而獲得之經過非直線加工之光學薄膜之形狀之一例的概略平面圖。 3 is a schematic plan view showing an example of the shape of a non-linearly processed optical film obtained by the method of manufacturing an optical film using an end mill according to an embodiment of the present invention.
圖4是用於說明用到本發明之實施形態之端銑刀的光學薄膜之切割加工的概略立體圖。 Fig. 4 is a schematic perspective view for explaining cutting of an optical film using an end mill according to an embodiment of the present invention.
圖5(a)~圖5(e)是說明用到本發明之實施形態之端銑刀的光學薄膜之切割加工之一例、亦即非直線之切割加工之一連串過程的概略平面圖。 5(a) to 5(e) are schematic plan views illustrating an example of dicing of an optical film using an end mill according to an embodiment of the present invention, that is, a series of processes of non-linear dicing.
用以實施發明之形態 form for carrying out the invention
雖然以下是參考圖面來說明本發明之具體實施形 態,但本發明並非限定於該等實施形態。另,為了易於觀看而令圖面是示意地表示,且圖面中之長度、寬、厚度等之比例、及角度等是不同於實際。 Although the specific implementation form of the present invention is described below with reference to the drawings, state, but the present invention is not limited to these embodiments. In addition, the drawings are schematically shown for easy viewing, and ratios of length, width, thickness, etc., angles, etc. in the drawings are different from actual ones.
A.端銑刀 A. End mill
圖1(a)是用於說明本發明之1個實施形態之端銑刀之構造的從軸方向觀看之概略平面圖;圖1(b)是圖1(a)之端銑刀的概略立體圖。圖示例之端銑刀100具有:主體20,以朝鉛直方向(工件之積層方向,工件是積層著光學薄膜之切割對象物,詳細是後述)延伸之旋轉軸22為中心旋轉;切割刀刃10,從主體20突出且作為最外徑而構成。關於端銑刀,代表性而言是直柄端銑刀。在本發明之實施形態,於主體20設有埋入部24,切割刀刃10是埋入於埋入部24來固定於主體20。如果是如此之構成,則即便端銑刀是小徑而難以在主體表面充分地確保切割刀刃之安裝面,亦可將切割刀刃良好地安裝在主體。所以,可實際製作具有實用上可容許之切割能力之小徑端銑刀。再者,可實現強度及耐久性佳之端銑刀。在本發明之實施形態,於主體20設有複數個埋入部24,切割刀刃10是分別埋入於該複數個埋入部24來固定。雖然在圖示例是設置2個埋入部24、24,但亦可以設置3個以上的埋入部。亦即,切割刀刃之數量可以是2枚,亦可以是3枚以上。再者,本發明之實施形態是除了上述構成之外,還令切割刀刃10以切割刀刃10之延長線不通過旋轉軸22的方式,埋入於埋入部24並固定。如果是如此之構成,則與以切割刀刃之延長線會通過旋轉軸 的方式來形成埋入部之構成相比,可令埋入部的相互距離(實質上是埋入部之深部的相互距離)變大。結果,可更加提升主體20之強度及耐久性,最終而言,可更加提升端銑刀之強度及耐久性。結果,即便是使用複數個切割刀刃,亦可實現如上述般之優良之端銑刀。另,在本說明書中,「切割刀刃之延長線」是指在切割刀刃之厚度方向之中點朝切割刀刃之長度方向延伸之線(圖1(a)之線E)。 Fig. 1(a) is a schematic plan view viewed from the axial direction for explaining the structure of an end mill according to an embodiment of the present invention; Fig. 1(b) is a schematic perspective view of the end mill in Fig. 1(a). The end mill 100 illustrated in the illustration has a main body 20 that rotates around a rotating shaft 22 extending in the vertical direction (the lamination direction of the workpiece, the workpiece is an object to be cut on which an optical film is laminated, which will be described in detail later), and a cutting edge 10 that protrudes from the main body 20 and is formed as the outermost diameter. As for the end mill, it is typically a straight shank end mill. In an embodiment of the present invention, the main body 20 is provided with an embedding portion 24 , and the cutting blade 10 is embedded in the embedding portion 24 to be fixed to the main body 20 . With such a configuration, even if the end mill has a small diameter and it is difficult to secure a sufficient mounting surface for the cutting blade on the surface of the main body, the cutting blade can be satisfactorily attached to the main body. Therefore, a small-diameter end mill having a practically acceptable cutting ability can be actually manufactured. Furthermore, an end mill with excellent strength and durability can be realized. In the embodiment of the present invention, the main body 20 is provided with a plurality of embedded parts 24, and the cutting blade 10 is respectively embedded in the plurality of embedded parts 24 to be fixed. In the illustrated example, two embedding portions 24, 24 are provided, but three or more embedding portions may be provided. That is, the number of cutting blades may be two, or three or more. Furthermore, in an embodiment of the present invention, in addition to the above configuration, the cutting blade 10 is buried and fixed in the embedding portion 24 so that the extension line of the cutting blade 10 does not pass through the rotating shaft 22 . If so constituted, the extension line with the cutting blade will pass through the axis of rotation Compared with the configuration in which the embedded portions are formed in a similar manner, the mutual distance between the embedded portions (essentially, the mutual distance between the deep portions of the embedded portions) can be increased. As a result, the strength and durability of the main body 20 can be further improved, and finally, the strength and durability of the end mill can be further improved. As a result, even if a plurality of cutting blades are used, an excellent end mill as described above can be realized. In addition, in this specification, "the extension line of a cutting blade" means the line (line E of FIG.
如上述,埋入部24是設有複數個,可對應於埋入部24之數量來設定切割刀刃10之數量。埋入部宜設置2處~4處,更宜設置2處~3處。亦即,端銑刀之切割刀刃之數量宜為2枚~4枚,更宜為2枚~3枚。如果是如此之構成,由於可適切地確保切割刀刃間之間隔,故可良好地排出切割屑。較佳者是令刀刃數為2枚。如果是如此之構成,則可確保切割刀刃之剛性、且、確保屑穴而良好地排出切割屑。上述複數個埋入部宜設置在相對於旋轉軸22對稱之位置。如果是如此之構成,則可能不但實現良好之切割還令端銑刀之強度及耐久性更加提升。另,當端銑刀之切割刀刃為2枚的情況下,例如在端銑刀之主體之周方向相離約180°而配置。當端銑刀之切割刀刃為3枚的情況下,例如在端銑刀之主體之周方向隔約120°而配置。 As mentioned above, the embedding portion 24 is provided in plural, and the number of cutting blades 10 can be set corresponding to the number of embedding portions 24 . The embedded part should be set at 2~4 places, more preferably 2~3 places. That is, the number of cutting blades of the end mill should be 2 to 4, more preferably 2 to 3. According to such a structure, since the space|interval between cutting blades can be ensured suitably, cutting chips can be discharged|emitted favorably. Preferably, the number of blades is two. With such a configuration, the rigidity of the cutting blade can be ensured, and the cutting chips can be discharged well while ensuring the chip pocket. The above-mentioned plurality of embedded parts are preferably provided at symmetrical positions with respect to the rotation axis 22 . With such a configuration, it is possible not only to achieve good cutting but also to improve the strength and durability of the end mill. In addition, when there are two cutting blades of the end mill, they are arranged at a distance of about 180° in the circumferential direction of the main body of the end mill, for example. When there are three cutting blades of the end mill, they are arranged at intervals of about 120° in the circumferential direction of the main body of the end mill, for example.
在圖示例,埋入部24之深度d宜為0.30mm~1.50mm,更宜為0.30mm~1.00mm,更加宜為0.30mm~0.70mm。如果埋入部之深度是在如此之範圍內,則可確保切割刀刃對主體固定之強度及主體本身之強 度雙方。當埋入部之深度低於0.30mm的情況下,可能會有切割刀刃對主體固定之強度不充分的情形。當埋入部之深度超過低於1.50mm的情況下,可能會有主體本身之強度不充分的情形。 In the example shown in the figure, the depth d of the embedded portion 24 is preferably 0.30mm~1.50mm, more preferably 0.30mm~1.00mm, and even more preferably 0.30mm~0.70mm. If the depth of the embedded part is within such a range, the fixing strength of the cutting blade to the main body and the strength of the main body can be ensured. degree both sides. When the depth of the embedded portion is less than 0.30mm, the strength of fixing the cutting blade to the main body may not be sufficient. When the depth of the embedded part is less than or equal to 1.50 mm, the strength of the main body itself may not be sufficient.
在本發明之實施形態,切割刀刃10之螺旋角是0°。如果是如此之構成,則可良好地進行後述之光學薄膜之切割。更詳細而言,使用具有螺旋角之切割刀刃來切割(例如,異形加工或非直線加工)的情況下,有時切割面會變成從橫方向看起來呈錐狀,於是,藉由使用螺旋角為0°之切割刀刃,可抑制切割面變成錐狀之情形。在此,異形加工是指例如將光學薄膜加工成矩形以外之形狀。尤其,在使用小徑之端銑刀來在光學薄膜進行微細之非直線加工(異形加工)的情況下可獲得顯著之效果。另,在本說明書中,「螺旋角為0°」是指切割刀刃10朝與旋轉軸22實質上平行之方向延伸,換句話說,刀刃並未相對於旋轉軸呈螺旋。另,「0°」是指實質上為0°,因為加工誤差等而有少許角度螺旋的情況亦包含在內。 In the embodiment of the present invention, the helix angle of the cutting edge 10 is 0°. According to such a structure, the dicing of the optical film mentioned later can be performed favorably. More specifically, when cutting with a cutting blade with a helix angle (for example, irregular processing or non-linear processing), the cutting surface may become tapered when viewed from the horizontal direction. Therefore, by using a cutting blade with a helix angle of 0°, it is possible to suppress the cutting surface from becoming tapered. Here, "deformation processing" means, for example, processing an optical film into a shape other than a rectangle. In particular, a remarkable effect can be obtained when using a small-diameter end mill to perform fine non-linear processing (deformation processing) on an optical film. In addition, in this specification, "the helix angle is 0°" means that the cutting blade 10 extends in a direction substantially parallel to the rotation axis 22 , in other words, the blade does not spiral with respect to the rotation axis. In addition, "0°" means substantially 0°, and the case where there is a slight angle twist due to processing errors and the like is also included.
在本發明之實施形態,端銑刀之外徑低於10mm,宜為3mm~9mm,更宜為4mm~7mm。根據本發明之實施形態,可實際製作具有如此小的外徑、且、具有實用上可容許之切割能力之端銑刀。結果,例如,在使用如此小徑之端銑刀而進行之微細之非直線加工(異形加工)中,可良好地抑制光學薄膜之龜裂及變黃,並且,當光學薄膜具有接著層的情況下,可良好地抑制端部之膠因加工 而缺少之情形。另,在本說明中,「端銑刀之外徑」是指從旋轉軸22至刃尖10a為止之距離的2倍。 In the embodiment of the present invention, the outer diameter of the end mill is less than 10 mm, preferably 3 mm to 9 mm, more preferably 4 mm to 7 mm. According to the embodiment of the present invention, it is possible to actually manufacture an end mill having such a small outer diameter and having a practically acceptable cutting capability. As a result, for example, in the fine non-linear processing (special-shaped processing) performed by using such a small-diameter end mill, the cracking and yellowing of the optical film can be well suppressed, and when the optical film has an adhesive layer, the glue at the end can be well suppressed. And the absence of the situation. In addition, in this description, "end mill outer diameter" means twice the distance from the rotating shaft 22 to the cutting edge 10a.
切割刀刃10代表性而言是包含有刃尖10a、斜面10b、間隙面10c。可藉由斜面10b與主體20而規定屑穴30。刃尖10a可以是如圖示例般地銳利(例如,亦可以是在俯視下具有銳角之頂點),亦可以是平坦。間隙面10c之俯視形狀可以是如圖示例般之直線狀,亦可以是彎折狀(亦可以是具有2個間隙面)、亦可以是滑順之曲線狀。間隙面10c宜經過粗面化處理。粗面化處理可以是採用任意之適切之處理。可舉噴砂處理來作為代表例。藉由在間隙面施加粗面化處理,即便對光學薄膜進行切割加工時該光學薄膜含有接著層(例如接著劑層、黏著劑層),亦可抑制接著劑或黏著劑附著於切割刀刃之情形,結果,可抑制沾黏(blocking)。在本說明書,「沾黏」是指當光學薄膜含有接著層的情況下,工件之光學薄膜以端面之接著劑或黏著劑而互相接著之現象,附著於端面之接著劑或黏著劑之削屑促進了光學薄膜之互相接著。 The cutting edge 10 typically includes a cutting edge 10a, a slope 10b, and a clearance surface 10c. The chip cavity 30 can be defined by the inclined surface 10 b and the main body 20 . The cutting edge 10a may be sharp as shown in the figure (for example, it may be an apex having an acute angle in plan view), or may be flat. The top view shape of the gap surface 10c may be a straight line as shown in the figure, or a bent shape (also may have two gap surfaces), or a smooth curved shape. The gap surface 10c should be roughened. Any appropriate treatment may be used for the roughening treatment. Sandblasting can be given as a representative example. By applying roughening treatment to the gap surface, even if the optical film contains an adhesive layer (such as an adhesive layer, an adhesive layer) when the optical film is diced, it is possible to suppress the adhesion of the adhesive or the adhesive to the cutting blade, and as a result, it is possible to suppress blocking. In this specification, "adhesion" refers to the phenomenon that when the optical film contains an adhesive layer, the optical film of the workpiece is bonded to each other by the adhesive or adhesive on the end surface.
切割刀刃10可以是如圖示例般地以規定出預定角度之斜角α的方式而埋入於埋入部24並固定,亦可以是以令斜角成為0°(切割刀刃延伸之方向與主體之直徑方向平行)的方式而埋入於埋入部24並固定。當如圖示例般地規定出斜角的情況下,斜角α宜為5°~45°,更宜為5°~30°。如果斜角α是在如此之範圍內,則可擔保刀刃之銳利、適切地抑制切割加工時之抵抗、且可令屑穴30作為適 切之大小而良好地排出切割屑。結果,當對光學薄膜進行切割加工的情況下,可良好地抑制光學薄膜之龜裂及變黃,並且,當光學薄膜具有接著層的情況下,可良好地抑制端部之膠因加工而缺少之情形。另,若斜角α過大,則可能會有切割刀刃難以安裝至主體的情形。切割刀刃10之間隙角β宜為5°~30°,更宜為5°~25°。如果間隙角β是在如此之範圍內,則可防止間隙面10c與工件200之接觸,而可適切地抑制切割加工時之抵抗。再者,可防止刃尖角γ變得過小。結果,當對光學薄膜進行切割加工的情況下,可良好地抑制光學薄膜之龜裂及變黃,並且,當光學薄膜具有接著層的情況下,可良好地抑制端部之膠因加工而缺少之情形。此外,可增大切割刀刃之壽命。切割刀刃10之刃尖角γ宜為45°以上,更宜為55°以上。如果刃尖角γ是在如此之範圍內,則可增大切割刀刃之壽命。考慮到斜角α及間隙角β,刃尖角γ宜低於85°,更宜為80°以下,更加宜為75°以下。另,在本說明書中,「斜角α」是由連結刃尖10a與旋轉軸22之直線、以及斜面10b構成的角度;「間隙角β」是由工件200之切割面以及間隙面10c構成的角度;「刃尖角γ」是以刃尖10a作為頂點而規定的角度,是從式子:90°-斜角α-間隙角β來算出的角度。 The cutting blade 10 may be embedded and fixed in the embedding portion 24 so as to define a predetermined bevel angle α as shown in the figure, or may be embedded in the embedding portion 24 and fixed so that the bevel angle becomes 0° (the direction in which the cutting blade extends is parallel to the diameter direction of the main body). When the bevel angle is specified as shown in the figure, the bevel angle α is preferably 5°~45°, more preferably 5°~30°. If the bevel angle α is in such a range, the sharpness of the blade can be ensured, the resistance during cutting can be appropriately suppressed, and the chip pocket 30 can be used as a suitable tool. Cut to size and discharge cutting chips well. As a result, when the optical film is cut and processed, cracking and yellowing of the optical film can be well suppressed, and when the optical film has an adhesive layer, the lack of glue at the end due to processing can be well suppressed. In addition, if the bevel angle α is too large, it may be difficult to install the cutting blade to the main body. The clearance angle β of the cutting blade 10 is preferably 5°-30°, more preferably 5°-25°. If the clearance angle β is within such a range, the contact between the clearance surface 10c and the workpiece 200 can be prevented, and resistance during cutting can be suitably suppressed. Furthermore, it is possible to prevent the edge angle γ from becoming too small. As a result, when the optical film is cut and processed, cracking and yellowing of the optical film can be well suppressed, and when the optical film has an adhesive layer, the lack of glue at the end due to processing can be well suppressed. In addition, the life of the cutting blade can be increased. The edge angle γ of the cutting blade 10 is preferably not less than 45°, more preferably not less than 55°. If the edge angle γ is within such a range, the life of the cutting blade can be increased. In consideration of the bevel angle α and the clearance angle β, the edge angle γ is preferably less than 85°, more preferably 80° or less, and still more preferably 75° or less. In addition, in this specification, the "bevel angle α" is an angle formed by the straight line connecting the blade edge 10a and the rotating shaft 22, and the slope 10b; the "clearance angle β" is the angle formed by the cutting surface of the workpiece 200 and the clearance surface 10c;
在本發明之實施形態,切割刀刃10包含有燒結鑽石。如果是如此之構成,則可良好地進行如上述般之使用小徑之端銑刀而進行之微細之非直線加工(異形加工)。更詳細而言,切割刀刃10可以是以燒結鑽石構成(可 以是實質上由燒結鑽石而成),亦可以是如圖示例般地包含有燒結鑽石而構成。在圖示例中,切割刀刃10具有以超硬材料構成之基部11、及、設在基部11之其中一面(端銑刀之旋轉方向R之下游側之面)之燒結鑽石層12。燒結鑽石層12之表面是成為切割刀刃之斜面10b。如果是圖示例之構成,則切割刀刃之加工及切出會容易。再者,在圖示例,設置埋入部之效果會變得顯著。詳細是如下所述。要將如此之積層構造之切割刀刃安裝於主體的情況下,代表性而言是藉由硬焊來進行安裝,於是,由於積層構造,基部側與燒結鑽石層側的熱收縮性不同。結果,以硬焊進行安裝時,往往會於切割刀刃發生翹曲,切割刀刃難以安裝到主體。根據本發明之實施形態,由於是在將切割刀刃埋入於主體之埋入部之狀態下進行固定,故即便於切割刀刃發生翹曲,亦可能安裝。 In an embodiment of the present invention, the cutting edge 10 includes sintered diamond. With such a configuration, fine non-linear processing (deformation processing) as described above using a small-diameter end mill can be performed favorably. In more detail, the cutting edge 10 can be made of sintered diamond (can Therefore, it is actually made of sintered diamonds), or it may be composed of sintered diamonds as shown in the figure. In the illustrated example, the cutting blade 10 has a base 11 made of a superhard material, and a sintered diamond layer 12 provided on one surface of the base 11 (the surface on the downstream side in the rotation direction R of the end mill). The surface of the sintered diamond layer 12 is a slope 10b which becomes a cutting edge. According to the configuration shown in the illustration, it is easy to process and cut out the cutting blade. Furthermore, in the example shown in the figure, the effect of providing the embedded part becomes remarkable. The details are as follows. When attaching the cutting blade of such a laminated structure to the main body, it is typically mounted by brazing. Therefore, due to the laminated structure, the thermal shrinkage of the base side is different from that of the sintered diamond layer side. As a result, when mounting by brazing, the cutting blade tends to be warped, making it difficult to mount the cutting blade to the main body. According to the embodiment of the present invention, since the cutting blade is fixed in a state where the cutting blade is embedded in the embedding portion of the main body, even if the cutting blade is warped, it can be attached.
在圖示例中,基部11之厚度可以是例如0.2mm~2.0mm。關於構成基部11之超硬材料,代表性而言,可以是超硬合金。關於超硬合金,代表性而言,是指將元素週期表IVa、Va、VIa族金屬之碳化物以Fe、Co、Ni等之鐵系金屬燒結而成之複合材料。關於超硬合金之具體例,可以是WC-Co系合金、WC-TiC-Co系合金、WC-TaC-Co系合金、WC-TiC-TaC-Co系合金、WC-Ni系合金、WC-Ni-Cr系合金。燒結鑽石層12之厚度可以是例如0.5mm~1.5mm。關於構成燒結鑽石層12之燒結鑽石,代表性而言,是將小粒之鑽石與黏結劑(例如金屬粉、 陶瓷粉)一起以高溫/高壓而燒成塊之多結晶鑽石。可藉由改變黏結劑之種類及混合比例等而調整燒結鑽石之特性。 In the illustrated example, the thickness of the base portion 11 may be, for example, 0.2mm˜2.0mm. The superhard material constituting the base 11 may be representatively a superhard alloy. Cemented carbide typically refers to a composite material obtained by sintering carbides of group IVa, Va, and VIa metals of the periodic table with iron-based metals such as Fe, Co, and Ni. Specific examples of superhard alloys include WC-Co-based alloys, WC-TiC-Co-based alloys, WC-TaC-Co-based alloys, WC-TiC-TaC-Co-based alloys, WC-Ni-based alloys, and WC-Ni-Cr-based alloys. The thickness of the sintered diamond layer 12 may be, for example, 0.5mm˜1.5mm. Regarding the sintered diamonds constituting the sintered diamond layer 12, typically, small diamonds and a binder (such as metal powder, Ceramic powder) together with high temperature / high pressure and sintered into blocks of multi-crystalline diamonds. The characteristics of sintered diamonds can be adjusted by changing the type and mixing ratio of the binder.
切割刀刃10宜為沿著主體20之長度方向(旋轉軸方向)無接縫之一體物。藉由令切割刀刃為無接縫之一體物,切割能力、強度及耐久性可更加提升。切割刀刃之旋轉軸方向的長度宜為15mm以上,更宜為20mm~50mm。由於如果是如此之長度,則當對光學薄膜進行切割加工的情況下,可對積層有想要之枚數之光學薄膜的工件進行切割加工,故可提升切割加工之效率。 The cutting edge 10 is preferably a seamless integral body along the length direction of the main body 20 (direction of the rotation axis). By making the cutting blade a seamless one piece, the cutting ability, strength and durability can be further improved. The length of the cutting blade in the direction of the rotation axis should be more than 15 mm, more preferably 20 mm to 50 mm. With such a length, when cutting an optical film, it is possible to cut a workpiece having a desired number of optical films laminated, so that the efficiency of the cutting process can be improved.
以下,說明本發明之變形例中之幾個代表例。 Hereinafter, some representative examples of the modified examples of the present invention will be described.
圖2(a)是用於說明本發明之其他實施形態之端銑刀之構造的從軸方向觀看之概略平面圖。圖示例之端銑刀101是在主體20形成有基準面26。基準面20是朝相對於切割刀刃10之延伸方向形成上述預定角度(斜角α之角度)的方向延伸。換句話說,基準面20是朝與將刃尖10a、旋轉軸22連結之直線實質上平行之方向延伸。藉由形成基準面26,能以基準面26作為基準而容易設定埋入部24之方向,故結果是切割刀刃之斜角之設定變得容易。另,雖然於圖2(a)是在主體20之2個側面形成基準面26,但基準面26亦可以是僅在其中一側面形成。 Fig. 2(a) is a schematic plan view seen from the axial direction for explaining the structure of an end mill according to another embodiment of the present invention. The end mill 101 of the illustrated example has a reference surface 26 formed on the main body 20 . The reference plane 20 extends in a direction forming the above-mentioned predetermined angle (the angle of the oblique angle α) with respect to the extending direction of the cutting blade 10 . In other words, the reference plane 20 extends in a direction substantially parallel to the straight line connecting the cutting edge 10 a and the rotation shaft 22 . By forming the reference plane 26, the direction of the embedding portion 24 can be easily set using the reference plane 26 as a reference. As a result, setting of the bevel angle of the cutting blade becomes easy. In addition, although the reference plane 26 is formed on two side surfaces of the main body 20 in FIG. 2( a ), the reference plane 26 may also be formed on only one of the side surfaces.
圖2(b)及圖2(c)分別是用於說明本發明之更其他實施形態之端銑刀之構造的從軸方向觀看之概略平面圖。圖示例之端銑刀102及103分別在主體20更形成有埋入 面28。埋入面28是平坦面,在該平坦面形成埋入部24。埋入面28代表性而言是形成在與基準面之延伸方向交叉之方向。埋入面28例如可以是如圖2(b)所示地朝與基準面之延伸方向正交之方向延伸而形成;亦可以是如圖2(c)所示地朝相對於與基準面之延伸方向正交之方向形成上述預定角度(斜角α之角度)之方向延伸而形成;亦可以是朝相對於基準面之延伸方向規定出任意之適切角度之方向延伸而形成(未圖示)。藉由形成埋入面28,可在平坦面形成埋入部24,故埋入部之形成及切割刀刃之往埋入部之埋入變得容易。再者,藉由採用如圖2(c)所示之構成,只要形成朝與埋入面28正交之方向延伸之埋入部24,將切割刀刃10以與埋入面28正交的方式埋入,即可自動地實現想要之斜角。所以,切割刀刃之往埋入部之埋入變得非常容易,且,切割刀刃之斜角之設定變得非常容易。 2( b ) and FIG. 2( c ) are schematic plan views viewed from the axial direction for explaining the structure of an end mill according to another embodiment of the present invention, respectively. The end mills 102 and 103 of the illustrated example are further formed with embedded Surface 28. The embedded surface 28 is a flat surface on which the embedded portion 24 is formed. The embedded surface 28 is typically formed in a direction intersecting the extending direction of the reference plane. The embedding surface 28, for example, may be formed by extending in a direction perpendicular to the extending direction of the reference plane as shown in FIG. By forming the embedded surface 28, the embedded part 24 can be formed on the flat surface, so the formation of the embedded part and the embedding of the cutting blade into the embedded part become easy. Furthermore, by adopting the structure shown in FIG. 2( c), as long as the embedding portion 24 extending in a direction perpendicular to the embedding surface 28 is formed, and the cutting blade 10 is embedded in a manner perpendicular to the embedding surface 28, the desired bevel angle can be automatically realized. Therefore, the embedding of the cutting blade into the embedding portion becomes very easy, and the setting of the bevel angle of the cutting blade becomes very easy.
圖2(d)是用於說明本發明之其他實施形態之端銑刀之構造的從軸方向觀看之概略平面圖。在圖示例之端銑刀104,主體20從旋轉軸方向看起來之埋入部24之旋轉方向R之上游側的部分20u比下游側的部分20d還突出。如果是如此之構成,則可更加良好地排出切割屑。埋入部之旋轉方向上游側的深度d1宜為0.50mm~1.50mm,更宜為0.50mm~1.00mm。埋入部之旋轉方向下游側的深度d2宜為0.30mm~1.25mm,更宜為0.30mm~0.75mm。如果d1及d2為如此之範圍,則可在實現上述之優良之切割屑排出性之同時,確保切割刀刃對主體之固定強度及主體 本身之強度雙方。d1與d2的比值d1/d2宜為1.20~1.67,更宜為1.33~1.67。如果比值d1/d2在如此之範圍內,則具有如下之優點:成為更容易承受積載之光學薄膜加工的切割條件之構造。 Fig. 2(d) is a schematic plan view viewed from the axial direction for explaining the structure of an end mill according to another embodiment of the present invention. In the end mill 104 of the illustrated example, the upstream portion 20u of the main body 20 in the rotational direction R of the embedded portion 24 protrudes more than the downstream portion 20d when viewed from the rotational axis direction. With such a configuration, cutting chips can be discharged more favorably. The depth d1 on the upstream side of the embedded portion in the direction of rotation is preferably 0.50 mm to 1.50 mm, more preferably 0.50 mm to 1.00 mm. The depth d2 on the downstream side of the embedded portion in the direction of rotation is preferably 0.30 mm to 1.25 mm, more preferably 0.30 mm to 0.75 mm. If d1 and d2 are in such a range, while achieving the above-mentioned excellent chip discharge performance, the fixing strength of the cutting blade to the main body and the strength of the main body can be ensured. Both sides of its own strength. The ratio d1/d2 of d1 and d2 is preferably 1.20~1.67, more preferably 1.33~1.67. If the ratio d1/d2 is within such a range, there is an advantage that it becomes a structure that can more easily withstand the cutting conditions of the optical film processing of the stack.
可將上述之實施形態適切地予以組合。例如,亦可以如圖2(e)所示地將圖2(d)之實施形態與斜角為0°之實施形態組合;亦可以將圖2(a)、圖2(b)或圖2(c)之實施形態與斜角為0°之實施形態組合。又例如,關於圖2(a)~圖2(e)之實施形態,亦可以分別改成切割刀刃之刀刃數為3枚(埋入部為3處),亦可以分別改成切割刀刃之刀刃數為4枚以上(埋入部為4處以上)。上述之實施形態之舉例顯示以外之適切之組合亦包含於本發明是自不在話下。 The above-mentioned embodiments can be combined appropriately. For example, as shown in Figure 2 (e), it is also possible to combine the embodiment of Fig. 2 (d) with the embodiment of the oblique angle of 0°; it is also possible to combine the embodiment of Fig. 2 (a), Fig. 2 (b) or Fig. 2 (c) with the embodiment of the oblique angle of 0°. For another example, regarding the implementation form of Fig. 2 (a) ~ Fig. 2 (e), it is also possible to change the number of cutting blades into 3 pieces (3 embedded parts) respectively, or to change the number of cutting blades into 4 or more pieces (the embedded parts are more than 4 places) respectively. It goes without saying that suitable combinations other than those shown in the examples of the above-mentioned embodiments are also included in the present invention.
B.端銑刀之製造方法 B. Manufacturing method of end mill
上述A項所記載之端銑刀的製造方法包含以下步驟:將切割刀刃10埋入於主體20之埋入部24;及在將切割刀刃10埋入於埋入部24之狀態下,藉由真空硬焊或高週波硬焊而將切割刀刃10固定於埋入部24。以下,簡單地說明。 The manufacturing method of the end mill described in item A above includes the steps of: embedding the cutting blade 10 in the embedding portion 24 of the main body 20; Hereinafter, it will be briefly described.
首先,製作主體。主體可以是藉由以下而製作:例如,以業界周知之方法,將以業界周知之粉末冶金法獲得之燒結體加工成圓柱形狀。接著,在主體形成埋入部。埋入部可以是藉由任意之適切之方法而形成。關於形成方法之具體例,有雷射加工、切割加工。另一方面,製作切割刀刃。當要製作具有以超硬材料構成之基部、及設在該基部之其中一面之燒結鑽石層的切割刀刃的情況下, 切割刀刃可以是藉由以下之過程而製作:首先,從具有基部與燒結鑽石層之母材切出預定形狀之切割刀刃形成片。切出是例如藉由放電加工或雷射加工而進行。接著,對獲得之切割刀刃形成片之基部進行切割而令厚度變小至預定厚度,藉此,獲得切割刀刃。當切割刀刃是以燒結鑽石構成的情況下,可以藉由對燒結鑽石之母材進行切割加工而獲得切割刀刃。 First, make the body. The main body can be produced by, for example, processing a sintered body obtained by a well-known powder metallurgy method into a cylindrical shape by a well-known method in the industry. Next, an embedded portion is formed in the main body. The embedded part may be formed by any appropriate method. Specific examples of the forming method include laser processing and dicing processing. On the other hand, make the cutting blade. When making a cutting blade with a base made of superhard material and a sintered diamond layer on one side of the base, The cutting blade can be manufactured by the following process: first, cutting out a predetermined shape of the cutting blade forming sheet from the base material having the base and the sintered diamond layer. Cutting out is performed, for example, by electrical discharge machining or laser machining. Next, the base portion of the obtained cutting blade forming sheet is cut to reduce the thickness to a predetermined thickness, whereby a cutting blade is obtained. When the cutting blade is made of sintered diamond, the cutting blade can be obtained by cutting the base material of the sintered diamond.
接著,將如上述般地獲得之切割刀刃埋入(代表性而言,將切割刀刃***埋入部)如上述般地形成之埋入部。最後,在將切割刀刃埋入於埋入部之狀態下,將切割刀刃固定於埋入部。具體而言,切割刀刃可以是藉由真空硬焊或高週波硬焊而固定於埋入部。即便為包含有燒結鑽石之切割刀刃,真空硬焊亦可將其良好地固定於主體(埋入部)。這是因為,由於可將硬焊時之殘留氧及水分去除,故可將主體表面之氧化膜破壞且防止氧化膜之再生,因此,可增大主體表面之可濕性。高週波硬焊是可在低溫下加工。另,當切割刀刃具有基部與燒結鑽石層的情況下,令基部及燒結鑽石層雙方固定於主體(埋入部);當切割刀刃是以燒結鑽石構成的情況下,令燒結鑽石固定於主體(埋入部)。 Next, the cutting blade obtained as described above is embedded (typically, the cutting blade is inserted into the embedded portion) in the embedded portion formed as described above. Finally, in a state where the cutting blade is embedded in the embedded part, the cutting blade is fixed to the embedded part. Specifically, the cutting blade can be fixed to the embedded part by vacuum brazing or high frequency brazing. Even for cutting blades containing sintered diamonds, vacuum brazing can well fix them to the main body (embedded part). This is because, since the residual oxygen and moisture during brazing can be removed, the oxide film on the surface of the main body can be destroyed and regeneration of the oxide film can be prevented, so the wettability of the surface of the main body can be increased. High frequency brazing can be processed at low temperature. In addition, when the cutting blade has a base and a sintered diamond layer, both the base and the sintered diamond layer are fixed to the main body (embedded part); when the cutting blade is composed of sintered diamonds, the sintered diamond is fixed to the main body (embedded part).
C.端銑刀之使用方法 C. How to use the end mill
上述A項及B項所記載之端銑刀代表性而言是適合用於光學薄膜之製造方法。該製造方法宜包含對光學薄膜之端面進行切割加工。 The end mills described in the above items A and B are typically suitable for use in a method of manufacturing an optical film. The manufacturing method preferably includes cutting the end face of the optical film.
關於光學薄膜之具體例,有偏振器、相位差薄膜、偏光板(代表性而言是偏振器與保護薄膜的積層體)、觸控面板用之導電性薄膜、表面處理薄膜、以及、因應目的而將這些適切地積層之積層體(例如防止反射用之圓偏光板、觸控面板用之附導電層之偏光板)。在1個實施形態中,光學薄膜是含有接著層(例如接著劑層、黏著劑層)。藉由使用本發明之實施形態之端銑刀,即便是含有接著層之光學薄膜,亦可抑制切割加工造成之膠缺少。 Specific examples of optical films include polarizers, retardation films, polarizing plates (typically, laminates of polarizers and protective films), conductive films for touch panels, surface treatment films, and laminates in which these are appropriately laminated according to purposes (such as circular polarizing plates for anti-reflection, polarizing plates with conductive layers for touch panels). In one embodiment, the optical film contains an adhesive layer (for example, an adhesive layer, an adhesive layer). By using the end mill according to the embodiment of the present invention, even an optical film including an adhesive layer can suppress adhesive shortage caused by dicing.
以下,說明採用附黏著劑層之偏光板來作為光學薄膜之一例的情況下之製造方法。具體而言是說明如圖3所示之平面形狀之附黏著劑層之偏光板之製造方法的各步驟。另,對業者而言,當然可明白光學薄膜並非限定於附黏著劑層之偏光板、及、附黏著劑層之偏光板之平面形狀並非限定於圖3之平面形狀。亦即,本發明之實施形態之端銑刀可適用於任意形狀之任意之光學薄膜之製造方法。 Hereinafter, the manufacturing method in the case of using the polarizing plate with an adhesive layer as an example of an optical film is demonstrated. Specifically, each step of a method of manufacturing a polarizing plate having a planar shape with an adhesive layer as shown in FIG. 3 will be described. In addition, it is obvious to the operators that the optical film is not limited to the polarizing plate with the adhesive layer, and the planar shape of the polarizing plate with the adhesive layer is not limited to the planar shape in FIG. 3 . That is, the end mill according to the embodiment of the present invention can be applied to a method of manufacturing any optical film of any shape.
C-1.工件之形成 C-1. Formation of workpiece
圖4是用於說明光學薄膜之切割加工的概略立體圖,在本圖顯示著工件200。如圖4所示,形成了重疊有複數枚光學薄膜(附黏著劑層之偏光板)之工件200。由於附黏著劑層之偏光板可以是藉由業界周知慣用之方法而製造,故省略該製造方法之詳細說明。在工件形成時,附黏著劑層之偏光板代表性而言是已切斷成任意之適切之形狀。具體而言,附黏著劑層之偏光板可以是已切斷成矩形形狀,亦可 以是已切斷成類似矩形形狀之形狀,亦可以是已切斷成對應目的之適切之形狀(例如圓形)。在圖示例,附黏著劑層之偏光板是已切斷成矩形形狀,工件200具有互相對向之外周面(切割面)200a、200b、以及、與這些正交之外周面(切割面)200c、200d。工件200宜藉由夾持手段(未圖示)而從上下被夾持。工件之總厚度宜為10mm~50mm,更宜為15mm~25mm,更加宜為約20mm。如果是如此之厚度,則可防止因為夾持手段之緊壓或切割加工時之衝擊而造成損傷。附黏著劑層之偏光板是以令工件成為如此之總厚度的方式而重疊。構成工件之附黏著劑層之偏光板的枚數可以是例如20枚~100枚。夾持手段(例如治具)可以是以軟質材料而構成,亦可以是以硬質材料而構成。當以軟質材料構成的情況下,其硬度(JIS A)宜為60°~80°。若硬度過高,可能會殘留有夾持手段造成之壓痕。若硬度過低,可能因為治具之變形而發生位置偏移,切割精度變得不充分。 FIG. 4 is a schematic perspective view for explaining dicing of an optical film, and a workpiece 200 is shown in this figure. As shown in FIG. 4 , a workpiece 200 in which a plurality of optical films (polarizing plates with adhesive layers) are stacked is formed. Since the polarizing plate with the adhesive layer can be manufactured by a well-known method in the industry, the detailed description of the manufacturing method is omitted. Typically, the polarizing plate with the adhesive layer is cut into any appropriate shape when the workpiece is formed. Specifically, the polarizing plate with the adhesive layer can be cut into a rectangular shape, or can be Therefore, the shape that has been cut into a similar rectangular shape can also be cut into a suitable shape (such as a circle) corresponding to the purpose. In the illustrated example, the polarizing plate with the adhesive layer is cut into a rectangular shape, and the workpiece 200 has outer peripheral surfaces (cut surfaces) 200a, 200b facing each other, and outer peripheral surfaces (cut surfaces) 200c, 200d orthogonal to these. The workpiece 200 is preferably clamped from top to bottom by a clamping means (not shown). The total thickness of the workpiece is preferably 10 mm to 50 mm, more preferably 15 mm to 25 mm, more preferably about 20 mm. Such a thickness can prevent damage caused by the compression of the clamping means or the impact during cutting. The polarizing plates with the adhesive layer are overlapped in such a way that the workpiece has such a total thickness. The number of polarizers constituting the adhesive layer of the workpiece may be, for example, 20 to 100. The clamping means (eg jig) can be made of soft material or hard material. When it is made of soft material, its hardness (JIS A) is preferably 60°~80°. If the hardness is too high, the indentation caused by the clamping means may remain. If the hardness is too low, the position may be shifted due to the deformation of the jig, and the cutting accuracy will become insufficient.
C-2.端銑刀加工 C-2. End Mill Processing
接著,藉由端銑刀100來切割工件200之外周面之預定之位置。端銑刀100代表性而言是如下地使用:由工作機械(未圖示)保持,繞端銑刀之旋轉軸而高速旋轉,一面朝與旋轉軸交叉之方向進給、一面將切割刀刃抵接工件200之外周面而切入。亦即,切割代表性而言是藉由如下來進行:將端銑刀之切割刀刃抵接工件200之外周面而切入。當製作如圖3所示之俯視形狀之附黏著劑層之偏光板的情況下,在工件200之外周之4個角落部形成倒角部200E、 200F、200G、200H,在連結倒角部200E與200H之外周面的中央部形成凹部200I。 Next, a predetermined position on the outer peripheral surface of the workpiece 200 is cut by the end mill 100 . Typically, the end mill 100 is used by being held by a machine tool (not shown), rotated at a high speed around the rotation axis of the end mill, feeding in a direction intersecting the rotation axis, and cutting the cutting blade against the outer peripheral surface of the workpiece 200 . That is, cutting is typically performed by bringing the cutting edge of the end mill into contact with the outer peripheral surface of the workpiece 200 . When making a polarizing plate with an adhesive layer in a top view as shown in FIG. 3 , chamfers 200E, 200E, In 200F, 200G, and 200H, a recessed portion 200I is formed in the central portion of the outer peripheral surface connecting the chamfered portions 200E and 200H.
針對工件200之切割加工進行詳細說明。首先,如圖5(a)所示,在要形成圖2之倒角部200E之部分進行倒角加工,接著,如圖5(b)~圖5(d)所示,在要形成倒角部200F、200G及200H之部分依序進行倒角加工。最後,如圖5(e)所示,切割形成凹部200I。另,雖然圖示例是將倒角部200E、200F、200G、200H、及凹部200I依此順序而形成,但這些只要是以任意之適切之順序來形成即可。 The cutting process of the workpiece 200 will be described in detail. First, as shown in FIG. 5( a), chamfering is performed on the part where the chamfered portion 200E of FIG. 2 is to be formed, and then, as shown in FIGS. Finally, as shown in FIG. 5( e ), the concave portion 200I is formed by cutting. In addition, although the chamfered part 200E, 200F, 200G, 200H, and the recessed part 200I are formed in this order in the example shown in the figure, they should just be formed in arbitrary appropriate order.
切割加工之條件可以是因應附黏著劑層之偏光板之構成、想要之形狀等而適切地設定。例如,端銑刀之旋轉速度(旋轉數)宜為低於25000rpm,更宜為22000rpm以下,更加宜為20000rpm以下。端銑刀之旋轉速度之下限可以是例如10000rpm。又,例如,端銑刀之進給速度宜為500mm/分~10000mm/分,更宜為500mm/分~2500mm/分,更加宜為800mm/分~1500mm/分。又,例如,端銑刀之切入量宜為0.8mm以下,更宜為0.3mm以下。由端銑刀對切割部位進行之切割次數可以是1次、2次、3次或更多。 The conditions of the cutting process can be appropriately set in accordance with the configuration, desired shape, and the like of the polarizing plate with the adhesive layer attached. For example, the rotational speed (number of rotations) of the end mill is preferably less than 25000 rpm, more preferably less than 22000 rpm, and still more preferably less than 20000 rpm. The lower limit of the rotation speed of the end mill may be, for example, 10000 rpm. Also, for example, the feed rate of the end mill should be 500 mm/min to 10000 mm/min, more preferably 500 mm/min to 2500 mm/min, more preferably 800 mm/min to 1500 mm/min. Also, for example, the cutting amount of the end mill is preferably 0.8 mm or less, more preferably 0.3 mm or less. The number of cuts performed on the cut portion by the end mill may be 1 time, 2 times, 3 times or more.
如以上,使用本發明之實施形態之端銑刀,獲得經過切割加工之附黏著劑層之偏光板。在圖示例是獲得含有經過非直線加工之部分之附黏著劑層之偏光板。 As mentioned above, using the end mill of embodiment of this invention, the polarizing plate with the adhesive layer which was cut and processed was obtained. In the example shown in the figure, a polarizing plate having an adhesive layer attached to a portion subjected to non-linear processing was obtained.
產業上之可利用性 Industrial availability
本發明之端銑刀是適合用於光學薄膜之切 割加工。受本發明之端銑刀進行切割加工過之光學薄膜可用於例如以汽車之儀表屏、智慧手表為代表之異形之圖像顯示部。 The end mill of the present invention is suitable for cutting optical films cutting processing. The optical film cut and processed by the end mill of the present invention can be used in a special-shaped image display part represented by, for example, an instrument panel of a car and a smart watch.
10:切割刀刃 10: Cutting blade
10a:刃尖 10a: blade tip
10b:斜面 10b: Bevel
10c:間隙面 10c: Clearance surface
11:基部 11: base
12:燒結鑽石層 12: Sintered diamond layer
20:主體 20: subject
22:旋轉軸 22: Rotation axis
24:埋入部 24: Embedded part
30:屑穴 30: chip hole
100:端銑刀 100: end mill
200:工件 200: workpiece
d:深度 d: depth
E:切割刀刃之延長線 E: Extension line of cutting blade
R:旋轉方向 R: direction of rotation
α:斜角 α: Bevel
β:間隙角 β: clearance angle
γ:刃尖角 γ: blade tip angle
Claims (8)
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JP2018-199729 | 2018-10-24 | ||
JP2018199729A JP7197087B2 (en) | 2018-10-24 | 2018-10-24 | End mill and its manufacturing method |
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TWI808260B true TWI808260B (en) | 2023-07-11 |
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KR (1) | KR20210073539A (en) |
CN (1) | CN112888521A (en) |
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CN106862625A (en) * | 2017-03-29 | 2017-06-20 | 江苏宇观智能科技有限公司 | One kind processing casting wooden model special hollow end mill(ing) cutter |
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JPS59107202U (en) * | 1983-01-10 | 1984-07-19 | 日立工機株式会社 | bit |
JPS60127912A (en) * | 1983-12-15 | 1985-07-08 | Asahi Daiyamondo Kogyo Kk | Rotary cutting tool of small diameter |
US4988241A (en) | 1989-09-15 | 1991-01-29 | The Boeing Company | Cutter with angled diamond inserts |
JPH0516037U (en) * | 1991-08-06 | 1993-03-02 | 東芝タンガロイ株式会社 | End mill |
JP2001030107A (en) | 1999-07-23 | 2001-02-06 | Hoei Kogyo:Kk | Axially rotating cutting tool |
JP2001347504A (en) | 2000-06-09 | 2001-12-18 | Kanefusa Corp | Tipped-blade router bit having end cutting edge |
GB0318501D0 (en) * | 2003-08-07 | 2003-09-10 | Exactaform Cutting Tools Ltd | Cutting tool |
JP2006247774A (en) | 2005-03-09 | 2006-09-21 | Mitsubishi Materials Corp | End mill |
US7757591B2 (en) * | 2005-10-19 | 2010-07-20 | 3M Innovative Properties Company | Aligned multi-diamond cutting tool assembly for creating microreplication tools |
JP2008307663A (en) | 2007-06-16 | 2008-12-25 | Precision Hasegawa:Kk | Router end mill |
JP5554115B2 (en) | 2010-03-30 | 2014-07-23 | シチズンホールディングス株式会社 | Electronic circuit |
JP6089596B2 (en) * | 2012-10-31 | 2017-03-08 | 三菱マテリアル株式会社 | End mill and manufacturing method thereof |
US10010951B2 (en) * | 2014-01-28 | 2018-07-03 | Kyocera Corporation | End mill and method of manufacturing machined product |
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JP6435801B2 (en) * | 2014-11-18 | 2018-12-12 | 三菱マテリアル株式会社 | End mill |
JP6277150B2 (en) | 2015-03-26 | 2018-02-07 | ナカオテクニカ株式会社 | Processing equipment |
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2018
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2019
- 2019-09-17 CN CN201980070206.2A patent/CN112888521A/en active Pending
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- 2019-09-17 KR KR1020217012118A patent/KR20210073539A/en not_active Application Discontinuation
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- 2019-09-23 TW TW112122926A patent/TW202337598A/en unknown
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JPH0623615A (en) * | 1992-03-09 | 1994-02-01 | Norton Co | Cutting tool using diamond film |
CN106862625A (en) * | 2017-03-29 | 2017-06-20 | 江苏宇观智能科技有限公司 | One kind processing casting wooden model special hollow end mill(ing) cutter |
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KR20210073539A (en) | 2021-06-18 |
JP7345808B2 (en) | 2023-09-19 |
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JP2022132448A (en) | 2022-09-08 |
CN112888521A (en) | 2021-06-01 |
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JP2020066086A (en) | 2020-04-30 |
TW202023719A (en) | 2020-07-01 |
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