TWI693118B - Tool with hard coating and super hard coating and manufacturing method thereof - Google Patents

Tool with hard coating and super hard coating and manufacturing method thereof Download PDF

Info

Publication number
TWI693118B
TWI693118B TW108102180A TW108102180A TWI693118B TW I693118 B TWI693118 B TW I693118B TW 108102180 A TW108102180 A TW 108102180A TW 108102180 A TW108102180 A TW 108102180A TW I693118 B TWI693118 B TW I693118B
Authority
TW
Taiwan
Prior art keywords
hard coating
tool
cutter
super
tip
Prior art date
Application number
TW108102180A
Other languages
Chinese (zh)
Other versions
TW202026076A (en
Inventor
陳成
屈建國
黃盈盈
章國輝
盧成
Original Assignee
大陸商深圳市金洲精工科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大陸商深圳市金洲精工科技股份有限公司 filed Critical 大陸商深圳市金洲精工科技股份有限公司
Application granted granted Critical
Publication of TWI693118B publication Critical patent/TWI693118B/en
Publication of TW202026076A publication Critical patent/TW202026076A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • 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
    • B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/347—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with layers adapted for cutting tools or wear applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Drilling Tools (AREA)

Abstract

本發明適用於鑽孔工具技術領域，公開了一種具有硬質塗層和超硬塗層的刀具及其製造方法。刀具包括刀具本體，刀具本體在外周上設置有排屑槽和螺旋面；螺旋面周向長度為刀具本體圓周長度的0%以上且80%以下，螺旋面上沉積有硬質塗層，沿刀具本體軸向距離刀具本體尖端L3、L2處硬質塗層的厚度分別為H1、H2， L2大於L3，且H2/H1的比值為1以上且1.5以下；刀具本體於硬質塗層處的外徑為D1，刀具本體於螺旋面以外處的外徑為D2，且D2小於D1，刀具本體還設置有超硬塗層，超硬塗層沉積於刀具本體表面及硬質塗層的表面。本發明所提供的一種具有硬質塗層和超硬塗層的刀具及其製造方法，其刀具加工效果佳、使用壽命長。The invention is applicable to the technical field of drilling tools, and discloses a cutter with a hard coating and a super-hard coating and a manufacturing method thereof. The cutter includes a cutter body, which is provided with a chip flute and a spiral surface on the outer periphery; the circumferential length of the spiral surface is more than 0% and less than 80% of the circumferential length of the cutter body, and a hard coating is deposited on the spiral surface along the cutter body The thickness of the hard coating at the axial distance from the tip of the tool body L3 and L2 is H1, H2, L2 is greater than L3, and the ratio of H2/H1 is more than 1 and less than 1.5; the outer diameter of the tool body at the hard coating is D1 The outer diameter of the cutter body outside the spiral surface is D2, and D2 is smaller than D1. The cutter body is also provided with a super-hard coating, which is deposited on the surface of the cutter body and the surface of the hard coating. The invention provides a tool with a hard coating and a super-hard coating and a manufacturing method thereof. The tool has good machining effect and long service life.

Description

具有硬質塗層和超硬塗層的刀具及其製造方法Tool with hard coating and super hard coating and manufacturing method thereof

本發明屬於鑽孔工具技術領域，尤其涉及一種具有硬質塗層和超硬塗層的刀具及其製造方法。The invention belongs to the technical field of drilling tools, in particular to a cutter with a hard coating and a super-hard coating and a manufacturing method thereof.

隨著印製電路板行業的發展，刀具的使用量顯著增加，需要新型塗層材料提升刀具的壽命，以降低加工成本；同時印製電路行業湧現出大量的新材料，如高頻高速板、陶瓷填充板、軟板和封裝板等，加工難度顯著增大。壽命提升和新材料的出現對刀具的磨損、排塵等有更高的要求，而習知的未塗層刀具可以藉由刀具結構參數和基體材質進行一定的提升，但提升幅度有限，已經不能很好地解決這一系列問題。With the development of the printed circuit board industry, the use of knives has increased significantly. New coating materials are needed to increase the life of knives to reduce processing costs. At the same time, a large number of new materials have emerged in the printed circuit industry, such as high-frequency high-speed boards, The processing difficulty of ceramic filling board, flexible board and packaging board is significantly increased. The improvement of life and the emergence of new materials have higher requirements on the wear and dust removal of tools, and the conventional uncoated tools can be improved to a certain extent by the structural parameters of the tool and the material of the matrix, but the increase is limited, it is no longer possible Solve this series of problems well.

為了提高刀具的壽命及其加工印製電路板的品質，國內外很多企業都對刀具進行表面改性處理，如化學氣相沉積（CVD）和物理氣相沉積（PVD）等，同時該技術已經廣泛運用在鋼鐵等金屬加工上，但是塗層刀具在印製電路板的運用較少，存在極大的需求量。雖然國內藉由多年的消耗吸收國外塗層設備和技術，在塗層技術、塗層裝備和塗層製程等方面取得了一定進展，但將這些方法直接運用到印製電路板刀具時，存在較多問題。譬如：（1）塗層本身的厚度、硬度和表面品質需要提升；（2）塗層與基體結合力仍需提升；（3）塗層技術與刀具的設計結合需要更加緊密。In order to improve the life of the tool and the quality of the processed printed circuit board, many domestic and foreign companies have carried out surface modification treatment on the tool, such as chemical vapor deposition (CVD) and physical vapor deposition (PVD), etc. At the same time, the technology has It is widely used in metal processing such as iron and steel, but coated tools are rarely used in printed circuit boards, and there is a huge demand. Although China has absorbed foreign coating equipment and technology through years of consumption, and has made certain progress in coating technology, coating equipment and coating process, but when these methods are directly applied to printed circuit board tools, there are More problems. For example: (1) the thickness, hardness and surface quality of the coating itself need to be improved; (2) the bonding force between the coating and the substrate still needs to be improved; (3) the combination of coating technology and tool design needs to be closer.

本發明旨在至少解決上述技術問題之一，提供了一種具有硬質塗層和超硬塗層的刀具及其製造方法，其刀具加工效果佳、使用壽命長。The present invention aims to solve at least one of the above technical problems, and provides a tool with a hard coating and a super-hard coating and a manufacturing method thereof, which has a good tool machining effect and a long service life.

本發明的技術方案是：一種具有硬質塗層和超硬塗層的刀具，包括刀具本體，所述刀具本體的前端為尖端，所述刀具本體在外周上設置有至少一個自刀具本體尖端朝向刀具末端螺旋延伸的排屑槽，所述刀具本體在外周上還設置有至少一個自刀具本體尖端朝向刀具末端螺旋延伸的螺旋面，所述排屑槽沿所述刀具本體軸向方向的長度為L1，所述螺旋面沿所述刀具本體軸向方向的長度為L4，且 L4小於L1；The technical solution of the present invention is: a cutter with a hard coating and a super-hard coating, including a cutter body, the front end of the cutter body is a tip, and the cutter body is provided on the outer periphery with at least one from the tip of the cutter body toward the cutter A spiral flute extending at the end, the cutter body is further provided on the outer periphery with at least one spiral surface spirally extending from the tip of the cutter body toward the cutter end, and the length of the flute along the axial direction of the cutter body is L1 , The length of the spiral surface along the axial direction of the cutter body is L4, and L4 is less than L1;

所述刀具本體中所述螺旋面處的外徑大於所述螺旋面以外處刀具本體的外徑，所述螺旋面沿刀具本體外周方向長度的總長為刀具本體圓周長度的0%以上且80%以下，所述螺旋面上沉積有硬質塗層，沿刀具本體軸向距離所述刀具本體尖端L3處所述硬質塗層的厚度為H1，所述螺旋面沿刀具本體軸向距離所述刀具本體尖端L2處所述硬質塗層的厚度為H2，L2大於L3，且H2/H1的比值為1以上且1.5以下；The outer diameter of the spiral surface in the cutter body is larger than the outer diameter of the cutter body outside the spiral surface, and the total length of the spiral surface along the outer circumferential direction of the cutter body is more than 0% and 80% of the circumferential length of the cutter body Hereinafter, a hard coating layer is deposited on the spiral surface, and the thickness of the hard coating layer at the tip L3 of the tool body along the axial direction of the tool body is H1, and the spiral surface is distanced from the tool body along the axial direction of the tool body The thickness of the hard coating layer at the tip L2 is H2, L2 is greater than L3, and the ratio of H2/H1 is 1 or more and 1.5 or less;

所述刀具本體於所述硬質塗層處的外徑為D1，所述刀具本體於螺旋面以外處的外徑為D2，且D2小於D1，D1與D2之間差值大於0.001 mm且小於0.2 mm ；The outer diameter of the cutter body at the hard coating is D1, the outer diameter of the cutter body outside the spiral surface is D2, and D2 is less than D1, the difference between D1 and D2 is greater than 0.001 mm and less than 0.2 mm;

所述刀具本體還設置有超硬塗層，所述超硬塗層沉積於所述刀具本體表面及所述硬質塗層的表面。The cutter body is also provided with a super-hard coating, which is deposited on the surface of the cutter body and the surface of the hard coating.

較佳地，所述超硬塗層的厚度為0.01至5微米；所述超硬塗層硬度大於40GPa。Preferably, the thickness of the super-hard coating is 0.01 to 5 microns; the hardness of the super-hard coating is greater than 40 GPa.

較佳地，所述超硬塗層的表面摩擦係數小於0.1；所述超硬塗層為由為C元素組成的四面體非晶碳膜。Preferably, the surface friction coefficient of the super-hard coating is less than 0.1; the super-hard coating is a tetrahedral amorphous carbon film composed of C element.

較佳地，所述螺旋面中沿軸向方向，所述硬質塗層的厚度在0.4至20微米範圍內。Preferably, in the spiral surface, the thickness of the hard coating layer is in the range of 0.4 to 20 microns along the axial direction.

較佳地，所述硬質塗層的表面摩擦係數為0.10至0.40。Preferably, the surface friction coefficient of the hard coating is 0.10 to 0.40.

較佳地，D2與D1之間的差值在0.001至0.08mm之間。Preferably, the difference between D2 and D1 is between 0.001 and 0.08 mm.

較佳地，所述刀具本體由含有WC和Co的硬質合金製成。Preferably, the cutter body is made of cemented carbide containing WC and Co.

較佳地，沿刀具本體軸向距離所述刀具本體尖端L3處為所述螺旋面的前端，沿刀具本體軸向距離所述刀具本體尖端L2處為所述螺旋面的末端。Preferably, the front end of the helical surface is at a distance L3 from the tip of the tool body along the axial direction of the tool body, and the end of the helical surface is at a distance L2 from the tool body tip along the axial direction of the tool body.

較佳地，沿刀具本體軸向距離所述刀具本體尖端L3處所述硬質塗層的厚度為4微米。Preferably, the thickness of the hard coating layer at the tip L3 of the cutter body along the axial direction of the cutter body is 4 μm.

較佳地，所述螺旋面沿所述刀具本體軸向方向的長度小於2mm。Preferably, the length of the spiral surface along the axial direction of the cutter body is less than 2 mm.

較佳地，所述螺旋面沿刀具本體軸向方向的長度為0.7mm；及/或，Preferably, the length of the spiral surface along the axial direction of the cutter body is 0.7 mm; and/or,

所述螺旋面沿刀具本體外周方向長度的總長為刀具本體圓周長度的10%；及/或，The total length of the spiral surface along the outer circumferential direction of the cutter body is 10% of the circumferential length of the cutter body; and/or,

D1-D2為0.018mm；及/或，D1-D2 is 0.018mm; and/or,

所述硬質塗層的最小厚度為4微米，且H2/H1為1.1。The minimum thickness of the hard coating is 4 microns, and H2/H1 is 1.1.

本發明還提供了一種刀具的製造方法，用於製造上述的一種具有硬質塗層和超硬塗層的刀具，包括以下步驟：The invention also provides a method for manufacturing a cutter, which is used to manufacture the above-mentioned cutter with a hard coating and a super-hard coating, including the following steps:

製備含有WC和Co的硬質合金；Preparation of cemented carbide containing WC and Co;

將所述硬質合金加工成刀具本體；Processing the cemented carbide into a tool body;

藉由砂輪開槽的方式於所述刀具本體形成自刀具本體尖端起沿軸向方向長度為L1的排屑槽；Forming a chip-removing groove with a length of L1 in the axial direction from the tip of the tool body by grooving the grinding wheel on the tool body;

於所述刀具本體的外周形成沿所述刀具本體軸向方向的長度為L4的螺旋面，且L4小於L1；A spiral surface with a length L4 along the axial direction of the tool body is formed on the outer periphery of the tool body, and L4 is less than L1;

於所述螺旋面上沉積硬質塗層，且距離所述刀具本體尖端L3處所述硬質塗層的厚度與距離所述刀具本體尖端L2處所述硬質塗層的厚度之間的比值為1以上且1.5以下；A hard coating is deposited on the spiral surface, and the ratio between the thickness of the hard coating at the tip L3 of the tool body and the thickness of the hard coating at the tip L2 of the tool body is 1 or more And below 1.5;

於所述刀具本體的整體表面上沉積一層硬度大於所述硬質塗層的超硬塗層。A superhard coating layer with a hardness greater than that of the hard coating layer is deposited on the entire surface of the cutter body.

本發明所提供的一種具有硬質塗層和超硬塗層的刀具及其製造方法，其且藉由超硬塗層降低刀具本體的表面摩擦係數，減小鑽頭與被加工印製電路板的摩擦力，可以顯著提升排屑性能，降低斷刀的風險，刀具加工效果佳、使用壽命長。The invention provides a tool with a hard coating and a super hard coating and a manufacturing method thereof, and the super hard coating is used to reduce the surface friction coefficient of the tool body and reduce the friction between the drill bit and the printed circuit board to be processed Force, can significantly improve the chip evacuation performance, reduce the risk of tool breakage, the tool has a good machining effect and a long service life.

為了使本發明的目的、技術方案及優點更加清楚明白，以下結合圖式及實施例，對本發明進行進一步詳細說明。應當理解，此處所描述的具體實施例僅僅用以解釋本發明，並不用於限定本發明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail in conjunction with the drawings and embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

需要說明的是，術語“設置”、“連接”應做廣義理解，例如，可以是直接設置、連接，也可以藉由居中元部件、居中結構間接設置、連接。It should be noted that the terms “setup” and “connection” should be understood in a broad sense. For example, it can be set up and connected directly, or indirectly set up and connected by a centering element or centering structure.

另外，本發明實施例中若有“縱向”、“橫向”、“長度”、“寬度”、“厚度”、“上”、“下”、“前”、“後”、“左”、“右”、“豎直”、“水平”、“頂”、“底”“內”、“外”等指示的方位或位置關係的用語，其為基於圖式所示的方位或位置關係或常規放置狀態或使用狀態，其僅是為了便於描述本發明和簡化描述，而不是指示或暗示所指的結構、特徵、裝置或元件必須具有特定的方位或位置關係、也不是必須以特定的方位構造和操作，因此不能理解為對本發明的限制。在本發明的描述中，除非另有說明，“多個”的含義是兩個或兩個以上。In addition, if there are "portrait", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", " The term "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicates the orientation or positional relationship, which is based on the orientation or positional relationship shown in the drawings or conventional The placement state or use state is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship or be constructed in a specific orientation And operation, therefore can not be understood as a limitation of the present invention. In the description of the present invention, unless otherwise stated, "plurality" means two or more.

在具體實施方式中所描述的各個具體技術特徵和各實施例，在不矛盾的情況下，可以藉由任何合適的方式進行組合，例如藉由不同的具體技術特徵/實施例的組合可以形成不同的實施方式，為了避免不必要的重複，本發明中各個具體技術特徵/實施例的各種可能的組合方式不再另行說明。The specific technical features and the embodiments described in the specific embodiments can be combined in any suitable way without contradiction, for example, the combination of different specific technical features/embodiments can form different In order to avoid unnecessary repetition, various possible combinations of specific technical features/embodiments in the present invention will not be described separately.

如第1圖至第3圖所示，本發明實施例提供的一種具有硬質塗層和超硬塗層的刀具，可用於印製電路板（PCB）的加工，包括刀具本體10，所述刀具本體10的前端為尖端（刀尖），所述刀具本體10在外周上設置有至少一個自刀具本體10尖端朝向刀具末端螺旋延伸的排屑槽11，所述刀具本體10在外周上還設置有至少一個自刀具本體10尖端朝向刀具末端螺旋延伸的螺旋面12，所述排屑槽11自刀尖處起沿所述刀具本體10軸向方向的長度為L1，螺旋面12自刀尖處起沿刀具本體10軸向方向的長度為L4，且 L4小於L1。As shown in FIGS. 1 to 3, an embodiment of the present invention provides a tool with a hard coating and a super-hard coating, which can be used for the processing of a printed circuit board (PCB), including the tool body 10, the tool The front end of the body 10 is a tip (tip), the cutter body 10 is provided on the outer circumference with at least one chip flute 11 spirally extending from the tip of the cutter body 10 toward the end of the cutter, and the cutter body 10 is further provided on the outer circumference At least one helical surface 12 extending helically from the tip of the tool body 10 toward the end of the tool, the chip flute 11 has a length L1 in the axial direction of the tool body 10 from the tool tip, and the helical surface 12 starts from the tool tip The length in the axial direction of the cutter body 10 is L4, and L4 is smaller than L1.

刀具本體10中螺旋面12處的外徑大於螺旋面12以外處刀具本體10的外徑，螺旋面12與排屑槽11周向錯位設置，螺旋面12沿刀具本體10外周方向長度的總長為刀具本體10圓周長度的0%以上且80%以下，螺旋面12上沉積有硬質塗層5，沿刀具本體10軸向距離刀具本體10尖端L3處硬質塗層5的厚度為H1（即為刀具本體10側面前端沿處），沿刀具本體10軸向距離刀具本體10尖端L2處硬質塗層5的厚度為H2，L2大於L3，且H2/H1的比值為1以上且1.5以下，即離刀具本體10尖端相對較遠處，硬質塗層5的厚度較厚，且硬質塗層5的最厚處與最薄處的厚度比值小於1.5。The outer diameter of the spiral body 12 in the cutter body 10 is larger than the outer diameter of the cutter body 10 other than the spiral surface 12, the spiral surface 12 and the chip flute 11 are circumferentially offset, and the total length of the spiral surface 12 along the outer circumference of the cutter body 10 is Above 0% and below 80% of the circumferential length of the tool body 10, a hard coating 5 is deposited on the spiral surface 12, and the thickness of the hard coating 5 at the tip L3 of the tool body 10 along the axial direction of the tool body 10 is H1 (that is, the tool At the front end of the side of the body 10), the thickness of the hard coating 5 at the tip L2 of the tool body 10 along the axial direction of the tool body 10 is H2, L2 is greater than L3, and the ratio of H2/H1 is 1 to 1.5, that is, away from the tool At a relatively far tip of the body 10, the thickness of the hard coating 5 is thicker, and the thickness ratio of the thickest part to the thinnest part of the hard coating 5 is less than 1.5.

本實施例中，螺旋面12上沉積的硬質塗層5，其金屬成分至少含有Cr，非金屬成分至少含有Si和N，硬質塗層5厚度在0.4至10微米可調，硬質塗層5的硬度大於30GPa，而硬質合金一般為20GPa；同時該硬質塗層5的表面摩擦係數為0.30 ，而相同狀態下的硬質合金基體的摩擦係數為0.7，即藉由硬質塗層5提升螺旋面12的表面硬度，降低螺旋面12的表面摩擦係數，減小螺旋面12與被加工印製電路板的孔壁摩擦產生的摩擦力，顯著減少了刀具前端L2的磨損。In this embodiment, the hard coating layer 5 deposited on the spiral surface 12 has a metallic component containing at least Cr and a non-metallic component containing at least Si and N. The thickness of the hard coating layer 5 is adjustable from 0.4 to 10 μm. The hardness is greater than 30GPa, and the cemented carbide is generally 20GPa; At the same time, the surface friction coefficient of the hard coating 5 is 0.30, and the friction coefficient of the cemented carbide substrate in the same state is 0.7, that is, the spiral surface 12 is lifted by the hard coating 5 The surface hardness reduces the surface friction coefficient of the spiral surface 12 and reduces the friction force generated by the friction between the spiral surface 12 and the hole wall of the printed circuit board to be processed, which significantly reduces the wear of the cutter front end L2.

本實施例中，硬質塗層5於螺旋面12前端處（螺旋面12起點）的厚度為H1，硬質塗層5於螺旋面12後端處（螺旋面12終點）的厚度為H2，且H2/H1的比值為1.0以上且1.5以下，較佳地，H2/H1的比值在1.001至1.25之間。硬質塗層5需要具有一定的厚度才能發揮潤滑耐磨作用，但是刀具在加工硬質電路板的過程中，始終與孔壁有接觸，造成螺旋面12的硬質塗層5整體磨損。且該刀具都需要進行多次研磨，反復使用，其加工孔數多，使用壽命長，為了保證研磨後仍有足夠的塗層厚度，將刀具設計成刀具前端H1小於刀具後端H2的結構，使得全新刀具和研磨後的塗層均能保持足夠的厚度，這樣新刀刀具和研磨後的塗層刀具加工的性能保持一致。In this embodiment, the thickness of the hard coating 5 at the front end of the spiral surface 12 (starting point of the spiral surface 12) is H1, and the thickness of the hard coating 5 at the rear end of the spiral surface 12 (end point of the spiral surface 12) is H2, and H2 The ratio of /H1 is 1.0 or more and 1.5 or less. Preferably, the ratio of H2/H1 is between 1.001 and 1.25. The hard coating 5 needs to have a certain thickness to play a role of lubrication and wear resistance, but the tool always contacts the hole wall during the processing of the hard circuit board, causing the hard coating 5 of the spiral surface 12 to wear out. And the tool needs to be ground multiple times and used repeatedly. It has a large number of holes and a long service life. In order to ensure that there is still enough coating thickness after grinding, the tool is designed to have a structure where the front end of the tool H1 is smaller than the rear end of the tool H2. The new tool and the polished coating can maintain sufficient thickness, so that the performance of the new knife tool and the polished coated tool remains the same.

刀具本體10於硬質塗層5處的外徑為D1，即硬質塗層5外周面的直徑為D1，刀具本體10於螺旋面12以外處的外徑為D2，D2＜D1，D1與D2之間差值大於0.001 mm且小於0.2 mm。在硬質塗層5的區段處，即從螺旋面12起始處至螺旋面12終點處的區段內，硬質塗層5表面對應的外徑為D1，而硬質塗層5的厚度從螺旋面12起始處至螺旋面12終點處的區段內逐漸變厚，則刀具本體10在螺旋面12起始處至螺旋面12終點處的區段內的直徑逐漸減小，刀具本體10於螺旋面12終點處的直徑及連接於螺旋面12的刀具本體10（圖中L5對應的區段）的直徑均可以為D2。L1段中，除去L2段，則為L5段，即L1=L2+L5；L2段中，除去L3段，則為L4段，即L2=L3+L4。刀具本體10可以連接有錐形的連接柄，連接柄的後端可以焊接有直徑大於D2的刀柄，刀柄可以採用不銹鋼材質製成。在本實施例中，於刀具本體101的外周上形成一個或者多個從刀具尖端3朝向末端的排屑槽11，排屑槽11的長度為L1；排屑槽11可由砂輪開槽形成，可以優化砂輪粒度和開槽參數，以調節排屑槽11的表面光潔度，降低排屑槽11的表面摩擦係數，以提升刀具的排屑性能。且由於D2＜D1，刀具前端參與切削，在印製電路板上加工的孔徑為D1，大於刀具本體10於螺旋面12以外處（L5段）的外徑D2，避免了刀具後端與孔壁磨損。在刀具加工過程中，僅有螺旋面12與印製電路板孔壁接觸；藉由調節螺旋面12的軸向長度和圓周長度可以優化螺旋面12與被加工印製電路板的孔壁接觸面積，減少表面摩擦力，提升孔壁品質。The outer diameter of the tool body 10 at the hard coating 5 is D1, that is, the outer diameter of the hard coating 5 is D1, and the outer diameter of the tool body 10 outside the spiral surface 12 is D2, D2<D1, D1 and D2 The difference between them is greater than 0.001 mm and less than 0.2 mm. At the section of the hard coating layer 5, from the beginning of the spiral surface 12 to the end of the spiral surface 12, the corresponding outer diameter of the surface of the hard coating layer 5 is D1, and the thickness of the hard coating layer 5 is from the spiral The thickness of the tool body 10 in the section from the beginning of the surface 12 to the end of the spiral surface 12 gradually becomes thicker, and the diameter of the tool body 10 in the section of the beginning of the spiral surface 12 to the end of the spiral surface 12 gradually decreases. The diameter at the end of the spiral surface 12 and the diameter of the cutter body 10 (the section corresponding to L5 in the figure) connected to the spiral surface 12 can both be D2. In the L1 segment, the L5 segment is removed, that is, the L5 segment, that is, L1=L2+L5; in the L2 segment, the L3 segment is removed, the segment is the L4, that is, L2=L3+L4. The cutter body 10 may be connected with a tapered connecting shank. The rear end of the connecting shank may be welded with a tool shank with a diameter greater than D2. The tool shank may be made of stainless steel. In this embodiment, one or more chip flutes 11 are formed on the outer periphery of the tool body 101 from the tool tip 3 toward the end, and the length of the chip flutes 11 is L1; the chip flutes 11 can be formed by grinding wheels Optimize the grain size and grooving parameters of the grinding wheel to adjust the surface finish of the chip flute 11 and reduce the surface friction coefficient of the chip flute 11 to improve the chip evacuation performance of the tool. And because D2 <D1, the front end of the tool participates in cutting, and the hole diameter processed on the printed circuit board is D1, which is larger than the outer diameter D2 of the tool body 10 outside the spiral surface 12 (L5 segment), avoiding the back end of the tool and the hole wall Wear. During the machining of the tool, only the spiral surface 12 is in contact with the hole wall of the printed circuit board; by adjusting the axial length and the circumferential length of the spiral surface 12, the contact area of the spiral surface 12 with the hole wall of the printed circuit board can be optimized , Reduce surface friction and improve hole wall quality.

在刀具本體10的表面沉積一層超硬塗層6，超硬塗層6沉積於刀具本體表面（包括刀具本體的刀尖面、排屑槽等整體表面及硬質塗層5的表面），該超硬塗層6為由C（碳）元素組成四面體非晶碳膜。該超硬塗層6的厚度H3為0.01至5微米可調，硬度大於40GPa，而一般硬質合金（刀具本體）的硬度不超過20GPa；同時該超硬塗層6的表面摩擦係數小於0.1（刀具本體硬質合金基體的摩擦係數為0.7）。即藉由超硬塗層6降低刀具本體10的表面摩擦係數，減小鑽頭與被加工印製電路板的摩擦力，可以顯著提升排屑性能，降低斷刀的風險。A layer of super-hard coating 6 is deposited on the surface of the tool body 10, and the super-hard coating 6 is deposited on the surface of the tool body (including the entire surface of the tool tip surface, chip flute and the surface of the hard coating layer 5). The hard coat layer 6 is a tetrahedral amorphous carbon film composed of C (carbon) elements. The thickness H3 of the super-hard coating 6 is adjustable from 0.01 to 5 microns, the hardness is greater than 40GPa, and the hardness of the general hard alloy (tool body) does not exceed 20GPa; at the same time, the surface friction coefficient of the super-hard coating 6 is less than 0.1 (tool The friction coefficient of the body cemented carbide matrix is 0.7). That is, the super-hard coating 6 reduces the surface friction coefficient of the tool body 10 and reduces the friction between the drill bit and the printed circuit board to be processed, which can significantly improve the chip evacuation performance and reduce the risk of tool breakage.

具體應用中，超硬塗層6的厚度可為0.1至3微米，或0.5至2.5微米等。In specific applications, the thickness of the super-hard coating layer 6 may be 0.1 to 3 microns, or 0.5 to 2.5 microns.

具體地，硬質塗層5包括金屬成分和非金屬成分，且金屬成分至少含有Cr，其硬度高，耐磨性佳，非金屬成分至少含有Si和N。其中Si元素所占原子百分比在0.05%至15%，本實施例中，非金屬成分中Si元素所占原子百分比在0.1至10%，具體可以0.2%至8%，較佳地，非金屬成分中Si元素所占原子百分比在0.5至6%。Specifically, the hard coating layer 5 includes a metal component and a non-metal component, and the metal component contains at least Cr, which has high hardness and good wear resistance, and the non-metal component contains at least Si and N. The atomic percentage of Si element is 0.05% to 15%. In this embodiment, the atomic percentage of Si element in non-metallic component is 0.1 to 10%, specifically 0.2% to 8%. Preferably, the non-metallic component The Si element accounts for 0.5 to 6% of the atoms.

具體地，螺旋面12中沿軸向方向，硬質塗層5的厚度在0.4至10微米範圍內，即硬質塗層5的厚度最薄可為0.4微米，或者，硬質塗層5的厚度最厚可為10微米，且需滿足在距離刀具本體10尖端L3至L2範圍內，硬質塗層5的厚度逐漸變厚且厚度比小於1.5。本實施例中，沿刀具本體10軸向距離刀具本體10尖端L3處為螺旋面12的前端，沿刀具本體10軸向距離刀具本體10尖端L3處即刀具本體10側面的前端沿處，沿刀具本體10軸向距離刀具本體10尖端L2處為螺旋面12的末端。硬質塗層5需要具有一定的厚度才能發揮潤滑耐磨作用，但是刀具在加工硬質電路板的過程中，始終與孔壁接觸，造成螺旋面12的硬質塗層5整體磨損。且在使用壽命中，刀具都需要進行多次研磨，反復使用，其加工孔數多，使用壽命長，為了保證研磨後仍有足夠的塗層厚度，將刀具設計成刀具前端之硬質塗層5厚度H1小於刀具後端（相對）之硬質塗層5厚度H2的結構，使得全新刀具和研磨後的塗層均能保持足夠的厚度，這樣新刀刀具和研磨後的塗層刀具加工的性能保持一致，所加的產品孔徑的一致性佳。Specifically, in the spiral surface 12, the thickness of the hard coating layer 5 is in the range of 0.4 to 10 μm along the axial direction, that is, the thinnest thickness of the hard coating layer 5 may be 0.4 μm, or the thickest thickness of the hard coating layer 5 It may be 10 micrometers, and the thickness of the hard coating layer 5 gradually becomes thicker and the thickness ratio is less than 1.5 within the range of L3 to L2 from the tip of the cutter body 10. In this embodiment, the front end of the spiral surface 12 is located along the axial direction of the tool body 10 from the tip L3 of the tool body 10, and along the axial direction from the tip L3 of the tool body 10, that is, the front end edge of the side of the tool body 10, along the tool The body 10 is axially away from the tip L2 of the cutter body 10 as the end of the spiral surface 12. The hard coating 5 needs to have a certain thickness to play a role of lubrication and wear resistance, but the tool always contacts the hole wall during the processing of the hard circuit board, causing the hard coating 5 of the spiral surface 12 to wear out. And in the service life, the tool needs to be ground many times and used repeatedly, and the number of processed holes is large, and the service life is long. In order to ensure that there is still enough coating thickness after grinding, the tool is designed as a hard coating on the front of the tool 5 The thickness H1 is less than the thickness H2 of the hard coating 5 at the rear end (relative) of the tool, so that the new tool and the polished coating can maintain sufficient thickness, so that the performance of the new tool and the polished coating tool is maintained. Consistent, the consistency of the pore size of the added product is good.

具體地，硬質塗層5的表面摩擦係數為0.25至0.35，較佳地，硬質塗層5的表面摩擦係數為0.28至0.32，本實施例中，硬質塗層5的表面摩擦係數為0.30。Specifically, the surface friction coefficient of the hard coating layer 5 is 0.25 to 0.35. Preferably, the surface friction coefficient of the hard coating layer 5 is 0.28 to 0.32. In this embodiment, the surface friction coefficient of the hard coating layer 5 is 0.30.

具體地， D2與D1之間的差值在0.001至0.080mm之間，較佳地，D2與D1之間的差值在0.01至0.060mm之間或0.02至0.05mmmm。Specifically, the difference between D2 and D1 is between 0.001 and 0.080 mm, preferably, the difference between D2 and D1 is between 0.01 and 0.060 mm or 0.02 to 0.05 mmmm.

具體地，刀具本體10由含有WC和Co的硬質合金製成。Specifically, the cutter body 10 is made of cemented carbide containing WC and Co.

本實施例中，沿刀具本體10軸向距離刀具本體10尖端L3處（刀具本體10側面前端沿處）硬質塗層5的厚度為4微米。In this embodiment, the thickness of the hard coating layer 5 at the tip L3 of the cutter body 10 (at the front edge of the side of the cutter body 10) along the axial direction of the cutter body 10 is 4 microns.

具體地，螺旋面12沿刀具本體10軸向方向的長度（即L4的長度）可小於4mm，較佳地，螺旋面12沿刀具本體10軸向方向的長度可小於3mm，本實施例中，螺旋面12沿刀具本體10軸向方向的長度小於2mm。Specifically, the length of the helical surface 12 in the axial direction of the cutter body 10 (that is, the length of L4) may be less than 4 mm. Preferably, the length of the helical surface 12 in the axial direction of the cutter body 10 may be less than 3 mm. In this embodiment, The length of the spiral surface 12 in the axial direction of the cutter body 10 is less than 2 mm.

本實施例中，螺旋面12沿刀具本體10軸線方向的長度為0.7mm或0.5mm。In this embodiment, the length of the spiral surface 12 along the axial direction of the cutter body 10 is 0.7 mm or 0.5 mm.

本實施例中，螺旋面12沿刀具本體10外周方向長度的總長為刀具本體10圓周長度的10%。In this embodiment, the total length of the spiral surface 12 along the outer circumferential direction of the cutter body 10 is 10% of the circumferential length of the cutter body 10.

本實施例中，D1-D2為0.018mm。In this embodiment, D1-D2 is 0.018mm.

本實施例中，硬質塗層5的最小厚度為4微米，且H2/H1為1.1。In this embodiment, the minimum thickness of the hard coating 5 is 4 microns, and H2/H1 is 1.1.

具體應用中，還可以在刀具本體10的表面沉積一層超硬塗層，該超硬塗層可為四面體非晶碳膜，由C元素組成。In a specific application, a super-hard coating layer may also be deposited on the surface of the tool body 10, and the super-hard coating layer may be a tetrahedral amorphous carbon film composed of C element.

本實施例還提供了一種刀具的製造方法，用於製造上述的一種具有硬質塗層和超硬塗層的刀具，包括以下步驟：This embodiment also provides a tool manufacturing method for manufacturing the above-mentioned tool with a hard coating and a super hard coating, including the following steps:

製備含有WC和Co的硬質合金；Preparation of cemented carbide containing WC and Co;

將硬質合金加工成刀具本體10；Processing hard alloy into tool body 10;

藉由砂輪開槽的方式於刀具本體10形成自刀具本體10尖端起沿軸向方向長度為L1的排屑槽11；A chip chute 11 with a length L1 in the axial direction from the tip of the tool body 10 is formed in the tool body 10 by grinding the groove of the grinding wheel;

於刀具本體10的外周形成沿刀具本體10軸向方向的長度為L4的螺旋面12，且L4小於L1；A spiral surface 12 with a length L4 along the axial direction of the tool body 10 is formed on the outer periphery of the tool body 10, and L4 is smaller than L1;

於螺旋面12上沉積硬質塗層5，且距離刀具本體10尖端L3處硬質塗層5的厚度與距離刀具本體10尖端L2處硬質塗層5的厚度之間的比值為1以上且1.5以下；A hard coating 5 is deposited on the spiral surface 12, and the ratio between the thickness of the hard coating 5 at the tip L3 of the cutter body 10 and the thickness of the hard coating 5 at the tip L2 of the cutter body 10 is 1 or more and 1.5 or less;

於刀具本體10的整體表面上沉積一層硬度大於硬質塗層5的超硬塗層。A superhard coating layer with a hardness greater than the hard coating layer 5 is deposited on the entire surface of the tool body 10.

本發明在螺旋面12沉積塗層材料（複合塗層材料）形成硬質塗層5，顯著減小到刀具外周方向的摩擦力，同時不影響刀具表面光潔度，保證了刀具的排屑性能。且由於D2小於D1，刀具前端參與切削，在印製電路板上加工的孔徑為D1，大於刀具本體10於螺旋面12以外處（L5段）的外徑D2，避免了刀具後端與孔壁磨損。在刀具加工過程中，僅有螺旋面12與印製電路板孔壁接觸；藉由調節螺旋面12的軸向長度和圓周長度，可以優化螺旋面12與被加工印製電路板的孔壁接觸面積，減少表面摩擦力，提升孔壁品質。藉由本發明製備的複合塗層刀具，在加工普通FR-4、無鹵素、HTG板材等印製電路板時，可以減少外徑磨損，減少斷針率，還能將微鑽的使用壽命至少提高至2至4倍，同時可保證鑽孔品質，大幅度提升加工效率，降低生產成本。超硬塗層6沉積於刀具本體表面（包括刀具本體的刀尖面、排屑槽等整體表面及硬質塗層5的表面），該超硬塗層6為由C（碳）元素組成四面體非晶碳膜。該超硬塗層6的厚度為0.01至5微米可調，硬度大於40GPa，而一般硬質合金（刀具本體）的硬度不超過20GPa；同時該超硬塗層6的表面摩擦係數小於0.1（刀具本體硬質合金基體的摩擦係數為0.7）。即藉由超硬塗層6降低刀具本體10的表面摩擦係數，減小鑽頭與被加工印製電路板的摩擦力，可以顯著提升排屑性能，降低斷刀的風險。The present invention deposits a coating material (composite coating material) on the spiral surface 12 to form a hard coating 5, which significantly reduces the frictional force in the direction of the outer periphery of the tool, does not affect the surface finish of the tool, and ensures the chip evacuation performance. And because D2 is less than D1, the front end of the tool participates in cutting, and the hole diameter processed on the printed circuit board is D1, which is larger than the outer diameter D2 of the tool body 10 outside the spiral surface 12 (L5 section), avoiding the back end of the tool and the hole wall Wear. During the machining of the tool, only the spiral surface 12 is in contact with the hole wall of the printed circuit board; by adjusting the axial length and the circumferential length of the spiral surface 12, the contact between the spiral surface 12 and the hole wall of the printed circuit board can be optimized Area, reduce surface friction and improve hole wall quality. With the composite coating tool prepared by the present invention, when processing printed circuit boards such as ordinary FR-4, halogen-free, HTG plates, etc., the outer diameter wear can be reduced, the needle breakage rate can be reduced, and the service life of the micro drill can be at least increased. To 2 to 4 times, at the same time can ensure the quality of drilling, greatly improve the processing efficiency and reduce production costs. A super-hard coating 6 is deposited on the surface of the tool body (including the overall surface of the tool tip surface, chip flutes and the surface of the hard coating 5), the super-hard coating 6 is a tetrahedron composed of C (carbon) elements Amorphous carbon film. The thickness of the super-hard coating 6 is adjustable from 0.01 to 5 microns, the hardness is greater than 40GPa, and the hardness of the general hard alloy (tool body) does not exceed 20GPa; At the same time, the surface friction coefficient of the super-hard coating 6 is less than 0.1 (tool body The friction coefficient of the cemented carbide matrix is 0.7). That is, the super-hard coating 6 reduces the surface friction coefficient of the tool body 10 and reduces the friction between the drill bit and the printed circuit board to be processed, which can significantly improve the chip evacuation performance and reduce the risk of tool breakage.

在對比實驗中，較佳為鑽徑0.11mm的普通刀具、本實施例中提供的具有硬質塗層和超硬塗層的刀具（以下簡稱本刀具）兩者對比，兩種結構參數一致。該螺旋面12沿軸向的長度較佳為0.5mm，螺旋面12沿刀具外周方向長度的總長為刀具圓周長度(πd)的8%，同時螺旋面12的外徑D1，L5的外徑D2，D2＜D1；且D1-D2為0.018mm，硬質塗層5厚度為4微米，且H2/H1為1.1。超硬塗層6的厚度為0.2微米。In the comparative experiment, it is preferable to compare the common tool with a drill diameter of 0.11 mm and the tool provided with a hard coating and a super-hard coating (hereinafter referred to as the tool) provided in this embodiment, and the two structural parameters are consistent. The length of the spiral surface 12 in the axial direction is preferably 0.5 mm, the total length of the spiral surface 12 in the tool outer circumferential direction is 8% of the tool circumferential length (πd), and the outer diameter D1 of the spiral surface 12 and the outer diameter D2 of L5 , D2<D1; and D1-D2 is 0.018mm, the thickness of the hard coating 5 is 4 microns, and H2/H1 is 1.1. The thickness of the super-hard coating 6 is 0.2 μm.

唯一的區別在於本刀具的螺旋面12上沉積硬質塗層5，在刀具本體10上沉積超硬塗層6。The only difference is that a hard coating 5 is deposited on the spiral surface 12 of the tool, and a super-hard coating 6 is deposited on the tool body 10.

測試條件如下表：

Figure 108102180-A0305-0001
The test conditions are as follows:
Figure 108102180-A0305-0001

測試結果為：The test result is:

1、普通刀具、本刀具的斷刀對比

Figure 108102180-A0305-0002
1. Comparison of the broken tool of ordinary tool and this tool
Figure 108102180-A0305-0002

2、外徑對比2. Outer diameter comparison

普通刀具、本刀具加工4000孔後，螺旋面4的外徑D1對比，可以發現普通刀具外徑嚴重變小，而本刀具外徑變化較小。

Figure 108102180-A0305-0003
After processing the 4000 holes of the common tool and this tool, the outer diameter D1 of the spiral surface 4 is compared, and it can be found that the outer diameter of the common tool is severely reduced, while the outer diameter of the tool is less changed.
Figure 108102180-A0305-0003

3、普通刀具和本刀具加工的孔壁品質

Figure 108102180-A0305-0004
3. The quality of the hole wall processed by the ordinary tool and this tool
Figure 108102180-A0305-0004

測試結果為：普通刀具和本刀具按上述加工條件加工260000孔後，普通刀具螺旋面磨損情況嚴重，如第5圖所示；本刀具螺旋面12磨損情況輕微，如第4圖所示。The test results are as follows: after the 260,000 holes are processed by the common tool and the tool according to the above processing conditions, the spiral surface of the common tool is seriously worn, as shown in Figure 5; the spiral surface 12 of the tool is slightly worn, as shown in Figure 4.

可見，本刀具即使研磨多次後，加工較多孔數後，也能保持較佳的孔壁品質，使用壽命遠高於普通刀具，利於提高生產效率及降低生產成本，且藉由超硬塗層6降低刀具本體10的表面摩擦係數，減小鑽頭與被加工印製電路板的摩擦力，可以顯著提升排屑性能，降低斷刀的風險。It can be seen that even after grinding many times, this tool can maintain better hole wall quality after processing a more porous number, and the service life is much higher than that of ordinary tools, which is beneficial to improve production efficiency and reduce production costs, and by super-hard coating 6. Reducing the surface friction coefficient of the tool body 10 and reducing the friction between the drill bit and the printed circuit board being processed can significantly improve the chip evacuation performance and reduce the risk of tool breakage.

以上僅為本發明的較佳實施例而已，並不用以限制本發明，凡在本發明的精神和原則之內所作的任何修改、等同替換或改進等，均應包含在本發明的保護範圍之內。The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the scope of protection of the present invention Inside.

3:刀具尖端3: tool tip

5:硬質塗層5: Hard coating

6:超硬塗層6: Super hard coating

10:刀具本體10: Tool body

11:排屑槽11: Chip chute

12:螺旋面12: spiral surface

D1、D2:外徑D1, D2: outer diameter

H1、H2、H3:厚度H1, H2, H3: thickness

L1~L5:長度L1~L5: Length

為了更清楚地說明本發明實施例中的技術方案，下面將對實施例中所需要使用的圖式作簡單地介紹，顯而易見地，下面描述中的圖式僅僅是本發明的一些實施例，對於所述技術領域具有通常知識者來講，在不付出進步性勞動的前提下，還可以根據這些圖式獲得其他的圖式。In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those with ordinary knowledge in the technical field, other drawings can be obtained according to these drawings without paying progressive labor.

第1圖是本發明實施例提供的一種具有硬質塗層和超硬塗層的刀具的平面示意圖；Figure 1 is a schematic plan view of a tool with a hard coating and a super-hard coating provided by an embodiment of the present invention;

第2圖是本發明實施例提供的一種具有硬質塗層和超硬塗層的刀具的平面示意圖；Figure 2 is a schematic plan view of a tool with a hard coating and a super-hard coating provided by an embodiment of the present invention;

第3圖是本發明實施例提供的一種具有硬質塗層和超硬塗層的刀具的平面局部放大示意圖；FIG. 3 is a partially enlarged schematic plan view of a tool with a hard coating and a super-hard coating provided by an embodiment of the present invention;

第4圖是本發明實施例提供的一種具有硬質塗層和超硬塗層的刀具對比實驗中的磨損示意圖；以及Figure 4 is a schematic diagram of wear in a comparative experiment of a tool with a hard coating and a super-hard coating provided by an embodiment of the present invention; and

第5圖是對比實驗中普通刀具的磨損示意圖。Figure 5 is a schematic diagram of the common tool wear in the comparative experiment.

5:硬質塗層 5: Hard coating

6:超硬塗層 6: Super hard coating

D1、D2:外徑 D1, D2: outer diameter

H1、H2:厚度 H1, H2: thickness

L2、L3、L4:長度 L2, L3, L4: length

Claims (12)

一種具有硬質塗層和超硬塗層的刀具，其包括刀具本體，該刀具本體的前端為尖端，該刀具本體在外周上設置有至少一個自刀具本體尖端朝向刀具末端螺旋延伸的排屑槽，該刀具本體在外周上還設置有至少一個自刀具本體尖端朝向刀具末端螺旋延伸的螺旋面，該排屑槽沿該刀具本體軸向方向的長度為L1，該螺旋面沿該刀具本體軸向方向的長度為L4，且L4小於L1；該刀具本體中該螺旋面處的外徑大於該螺旋面以外處刀具本體的外徑，該螺旋面沿刀具本體外周方向長度的總長為刀具本體圓周長度的0%以上且80%以下，該螺旋面上沉積有硬質塗層，沿刀具本體軸向距離該刀具本體尖端L3處該硬質塗層的厚度為H1，該螺旋面沿刀具本體軸向距離該刀具本體尖端L2處該硬質塗層的厚度為H2，L2大於L3，且H2/H1的比值為1以上且1.5以下；該刀具本體於該硬質塗層處的外徑為D1，該刀具本體於螺旋面以外處的外徑為D2，且D2小於D1，D1與D2之間差值大於0.001mm且小於0.2mm；該刀具本體還設置有超硬塗層，該超硬塗層沉積於該刀具本體表面及該硬質塗層的表面；其中該硬質塗層之厚度，係從接近於該刀具本體尖端朝遠離該刀具本體尖端之方向而逐漸增厚。 A cutter with a hard coating and a super-hard coating includes a cutter body. The front end of the cutter body is a tip. The cutter body is provided on the outer periphery with at least one chip flute spirally extending from the tip of the cutter body toward the end of the cutter. The cutter body is further provided with at least one spiral surface spirally extending from the tip of the cutter body toward the cutter tip on the outer periphery, the length of the chip flute along the axial direction of the cutter body is L1, and the spiral surface is along the axial direction of the cutter body The length is L4, and L4 is less than L1; the outer diameter of the helical surface in the tool body is greater than the outer diameter of the tool body outside the helical surface, the total length of the helical surface along the outer circumference of the tool body is the circumferential length of the tool body Above 0% and below 80%, a hard coating is deposited on the spiral surface, the thickness of the hard coating is H1 along the axial direction of the tool body from the tip L3 of the tool body, and the spiral surface is distanced from the tool along the axial direction of the tool body The thickness of the hard coating at the tip L2 of the body is H2, L2 is greater than L3, and the ratio of H2/H1 is 1 or more and 1.5 or less; the outer diameter of the tool body at the hard coating is D1, and the tool body is in the spiral The outside diameter of the surface is D2, and D2 is less than D1, the difference between D1 and D2 is greater than 0.001mm and less than 0.2mm; the tool body is also provided with a super-hard coating, the super-hard coating is deposited on the tool body The surface and the surface of the hard coating; wherein the thickness of the hard coating gradually increases from approaching the tip of the tool body toward a direction away from the tip of the tool body. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中該超硬塗層的厚度為0.01至5微米；該超硬塗層硬度大於40GPa。 The cutter with a hard coating layer and a super hard coating layer as described in item 1 of the patent application range, wherein the thickness of the super hard coating layer is 0.01 to 5 microns; the hardness of the super hard coating layer is greater than 40 GPa. 如申請專利範圍第1項或第2項所述的具有硬質塗層和超硬塗層的刀具，其中該超硬塗層的表面摩擦係數小於0.1；該超硬塗層為由為C元素組成的四面體非晶碳膜。 The tool with a hard coating and a super-hard coating as described in item 1 or 2 of the patent application scope, wherein the surface friction coefficient of the super-hard coating is less than 0.1; the super-hard coating is composed of element C Tetrahedral amorphous carbon film. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中該螺旋面中沿軸向方向，該硬質塗層的厚度在0.4至20微米範圍內。 The cutter with a hard coating layer and a super hard coating layer as described in item 1 of the patent application range, wherein the thickness of the hard coating layer is in the range of 0.4 to 20 microns in the axial direction in the spiral surface. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中該硬質塗層的表面摩擦係數為0.10至0.40。 The tool with a hard coating layer and a super hard coating layer as described in item 1 of the patent application range, wherein the surface friction coefficient of the hard coating layer is 0.10 to 0.40. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中，D2與D1之間的差值在0.001至0.08mm之間。 The tool with a hard coating and a super hard coating as described in item 1 of the patent application range, wherein the difference between D2 and D1 is between 0.001 and 0.08 mm. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中該刀具本體由含有WC和Co的硬質合金製成。 The tool with a hard coating and a super hard coating as described in item 1 of the patent application scope, wherein the tool body is made of a cemented carbide containing WC and Co. 如申請專利範圍第1項所述的具有硬質塗層和超硬塗層的刀具，其中，沿刀具本體軸向距離該刀具本體尖端L3處為該螺旋面的前端，沿刀具本體軸向距離該刀具本體尖端L2處為該螺旋面的末端。 The cutter with a hard coating and a super-hard coating as described in item 1 of the scope of the patent application, wherein the front end of the helical surface is located at the tip L3 of the cutter body along the axial direction of the cutter body, and along the axial direction of the cutter body The tip L2 of the cutter body is the end of the spiral surface. 如申請專利範圍第8項所述的具有硬質塗層和超硬塗層的刀具，其中，沿刀具本體軸向距離該刀具本體尖端L3處該硬質塗層的厚度為4微米。 The cutter with a hard coating layer and a super-hard coating layer as described in item 8 of the patent application range, wherein the thickness of the hard coating layer at the tip L3 of the cutter body along the axial direction of the cutter body is 4 μm. 如申請專利範圍第8項所述的具有硬質塗層和超硬塗層的刀具，其中該螺旋面沿該刀具本體軸向方向的長度小於2mm。 The cutter with a hard coating and a super-hard coating as described in item 8 of the patent application range, wherein the length of the spiral surface along the axial direction of the cutter body is less than 2 mm. 如申請專利範圍第6項所述的具有硬質塗層和超硬塗層的刀具，其中該螺旋面沿刀具本體軸向方向的長度為0.7mm；及/或， 該螺旋面沿刀具本體外周方向長度的總長為刀具本體圓周長度的10%；及/或，D1-D2為0.018mm；及/或，該硬質塗層的最小厚度為4微米，且H2/H1為1.1。 The cutter with a hard coating and a super-hard coating as described in item 6 of the patent application scope, wherein the length of the spiral surface in the axial direction of the cutter body is 0.7 mm; and/or, The total length of the spiral surface along the outer circumference of the cutter body is 10% of the circumference of the cutter body; and/or, D1-D2 is 0.018mm; and/or, the minimum thickness of the hard coating is 4 microns, and H2/H1 Is 1.1. 一種刀具的製造方法，其用於製造如申請專利範圍第1項至第11項中任一項所述的具有硬質塗層和超硬塗層的刀具，包括以下步驟：製備含有WC和Co的硬質合金；將該硬質合金加工成刀具本體；藉由砂輪開槽的方式於該刀具本體形成自刀具本體尖端起沿軸向方向長度為L1的排屑槽；於該刀具本體的外周形成沿該刀具本體軸向方向的長度為L4的螺旋面，且L4小於L1；於該螺旋面上沉積硬質塗層，且距離該刀具本體尖端L3處該硬質塗層的厚度與距離該刀具本體尖端L2處該硬質塗層的厚度之間的比值為1以上且1.5以下；於該刀具本體的整體表面上沉積一層硬度大於該硬質塗層的超硬塗層；其中該硬質塗層之厚度，係從接近於該刀具本體尖端朝遠離該刀具本體尖端之方向而逐漸增厚。 A method for manufacturing a cutter, which is used to manufacture a cutter with a hard coating layer and a super-hard coating layer as described in any one of items 1 to 11 of the patent application, including the following steps: preparing a WC and Co-containing tool Carbide; processing the cemented carbide into a tool body; forming a chip removal groove with a length of L1 in the axial direction from the tip of the tool body by grinding the groove on the tool body; forming a chip along the outer circumference of the tool body The length of the tool body in the axial direction is the spiral surface of L4, and L4 is less than L1; a hard coating is deposited on the spiral surface, and the thickness of the hard coating layer from the tip of the tool body L3 and the distance from the tip of the tool body L2 The ratio between the thickness of the hard coating is 1 or more and 1.5 or less; a superhard coating with a hardness greater than the hard coating is deposited on the entire surface of the tool body; wherein the thickness of the hard coating is close to The tip of the cutter body gradually thickens away from the tip of the cutter body.
TW108102180A 2018-12-29 2019-01-21 Tool with hard coating and super hard coating and manufacturing method thereof TWI693118B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811640671.9A CN109676180B (en) 2018-12-29 2018-12-29 Cutter with hard coating and superhard coating and manufacturing method thereof
CN201811640671.9 2018-12-29

Publications (2)

Publication Number Publication Date
TWI693118B true TWI693118B (en) 2020-05-11
TW202026076A TW202026076A (en) 2020-07-16

Family

ID=66191360

Family Applications (1)

Application Number Title Priority Date Filing Date
TW108102180A TWI693118B (en) 2018-12-29 2019-01-21 Tool with hard coating and super hard coating and manufacturing method thereof

Country Status (2)

Country Link
CN (1) CN109676180B (en)
TW (1) TWI693118B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688817B2 (en) * 1999-02-11 2004-02-10 Kennametal Inc. Drill for drilling, a method for making a drill for drilling, and a cutting tool
CN101512035A (en) * 2006-09-06 2009-08-19 山特维克知识产权股份有限公司 Coated drill and a method of making the same
CN103100833A (en) * 2011-11-15 2013-05-15 钴碳化钨硬质合金公司 Process for producing tool, especially reaming tool, and tool
TWM584717U (en) * 2018-12-29 2019-10-11 大陸商深圳市金洲精工科技股份有限公司 Tool having both hard coating and super-hard coating

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002172510A (en) * 2000-12-11 2002-06-18 Mmc Kobelco Tool Kk Drill of minimum diameter and method of making it
JP2003251503A (en) * 2001-12-26 2003-09-09 Sumitomo Electric Ind Ltd Surface covering cutting tool
DE102005005982A1 (en) * 2005-02-09 2006-08-17 Günther & Co GmbH Gun drills
US7476064B2 (en) * 2006-04-27 2009-01-13 Kyocera Corporation Cutting tool and method of cutting workpiece
SE0701320L (en) * 2007-06-01 2008-12-02 Sandvik Intellectual Property Coated cemented carbide for mold tool applications
JP2012086317A (en) * 2010-10-20 2012-05-10 Kyocera Corp Rotating tool
CN202571414U (en) * 2012-04-16 2012-12-05 昆山立特纳米电子科技有限公司 Nano superhard coating micro drill
CN203030991U (en) * 2013-01-18 2013-07-03 奥斯机(上海)精密工具有限公司 Coated cutting tool for processing of hard alloy
JP5702431B2 (en) * 2013-04-25 2015-04-15 ユニオンツール株式会社 Drilling tool
CN205167262U (en) * 2015-12-14 2016-04-20 广东工业大学 Be applied to diamond coated cutting tool among graphite high -speed machining
CN107486579B (en) * 2017-08-30 2019-05-24 大连远东工具有限公司 A kind of cutting tool and preparation method thereof with diversity function coating
CN108179398B (en) * 2017-12-29 2020-01-21 深圳市金洲精工科技股份有限公司 Diamond coating drill bit and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688817B2 (en) * 1999-02-11 2004-02-10 Kennametal Inc. Drill for drilling, a method for making a drill for drilling, and a cutting tool
CN101512035A (en) * 2006-09-06 2009-08-19 山特维克知识产权股份有限公司 Coated drill and a method of making the same
CN101600531A (en) * 2006-09-06 2009-12-09 瓦尔特公开股份有限公司 Coated spiral drill
CN103100833A (en) * 2011-11-15 2013-05-15 钴碳化钨硬质合金公司 Process for producing tool, especially reaming tool, and tool
TWM584717U (en) * 2018-12-29 2019-10-11 大陸商深圳市金洲精工科技股份有限公司 Tool having both hard coating and super-hard coating

Also Published As

Publication number Publication date
CN109676180B (en) 2023-08-29
TW202026076A (en) 2020-07-16
CN109676180A (en) 2019-04-26

Similar Documents

Publication Publication Date Title
CN104772509B (en) The polycrystalline diamond cutting tool of coating main body
KR20020064933A (en) Composite rotary tool and tool fabrication method
KR20000034774A (en) Diamond coated cutting member and method of making same
TWI547332B (en) A cutting tool, method of manufacturing the same and method of manufacturing cut work using the same
JPS5918472B2 (en) Cutting tools
JP2001504550A (en) Method for producing diamond-coated member
CN212454261U (en) Diamond composite sheet
KR20140023382A (en) Twist drill tips, precursor constructions for use in making same, and methods for making and using same
JPH04210315A (en) Rotary cutting tool
Song et al. Fabrication and evaluation of diamond thick film-Si3N4 brazed cutting tool by microwave plasma chemical vapor deposition method
TWI693118B (en) Tool with hard coating and super hard coating and manufacturing method thereof
WO2020133511A1 (en) Cutter having hard coating and superhard coating, and manufacturing method therefor
JP5590331B2 (en) Surface coated drill with excellent wear resistance and chip evacuation
TWM584717U (en) Tool having both hard coating and super-hard coating
TWI693293B (en) Cutter with hard coating and manufacturing method thereof
CN210059913U (en) Cutter with hard coating
JP2008238354A (en) Drill and cutting method
WO2020133512A1 (en) Cutter with hard coating and manufacturing method therefor
TWI765827B (en) Back drilling tool and preparation method thereof
JPS6150724B2 (en)
JP2004283951A (en) End mill
JP2004114190A (en) Fine machining tool
TW461924B (en) Cast diamond tools and their formation by chemical vapor deposition
CN114918460A (en) Wear-resistant drill bit, and preparation method and application thereof
JP4072048B2 (en) Surface coating tool