1291386 九、發明說明： 【發明所屬之技術領域】 本案係與夾頭有關，更詳而言之，尤指工具機床之夾頭。本發明之設 計係為提昇該夾頭中之夾爪元件的耐磨性。 【先前技術】 、 知的_，是以若干夾爪祕_定_個麟定賤的工具， 該工具之特定用途可能是研磨、鑽孔、切割_等。該夾頭_部設有控制 ® 夾爪夾緊或離開該工具的構造。該構造大致上具有一主軸，若干(通常為二 個）夾爪呈等間距放射#大地以該主軸為中心而設置，一個控制元件控制該等 夹爪同步地移動。當該等夾爪同步朝向該主轴之中心線移動時，可產生一 ，向主軸中心線方向的夾制力夾緊上述的工具。或者，該等夾爪同步往離開 - 該主軸之中心線方向移動時，即脫離該工具。 上述夾爪與主軸、控制元件、工具的接觸面皆會形成磨擦，而過度且 不當的磨擦會使得該等磨擦部位發生破損，如此可能造成爽爪移動不順 鲁利、控制元件無法有效控制夾爪移動、以及夾爪之夾制能力降低等問題。 先月ίι技術中解決該些問題的手段是在夾爪的表面鍍辞，或者在夾爪外塗厚 厚的一層潤滑脂或潤滑油。雖然該手段確實可降低磨擦力，但是潤滑脂或 潤滑油卻很容易使各種髒污、顆粒聚集，而且容易向外流出，因此弄髒夾 • 爪甚至整個爽頭。 【發明内容】 本發明為解決上述降低夾爪與其他元件不當磨擦的問題提出新的解決 方案。 5 1291386 本案工具機床使用之耐磨耗精密夾頭，主要包含： -主軸’其-端為驅動設備連接部，用以與—驅動設備的旋轉主輪連 接； -夾爪驅動件，以職手段結合於触_另外—端；該夾爪驅動件 之另一端設一夾爪連接部； 若干夾爪’以其根部分別連接於上述的夾爪連接部；該每一夾爪外部 覆蓋一層硬膜； 一夾爪座，其一端穿套於上述之夾爪連接部外，另一端設一錐狀體， 該錐狀體上設有若干夾爪滑槽，分別供上述的夾爪容設其中。 本案主要達成的目的，於該夾爪表面包覆-層氮化鈦(TiN)硬膜、或碳 化鈦(Ti〇賴、或碳氮佩(獅)硬膜、或氧化鈦⑽)硬膜、或氮化錯 (ZrN)硬膜，利用該等硬膜之物理性質，增加該夾爪的耐熱性、抗磨性，也 可使夾爪呈現不同於金屬本體的表面色澤。除此之外，上述硬膜是一種表 面光滑的固態膜，因此灰塵、加工粉屑或其他類似物即不容易附著，且該 硬膜不會如先前技術之潤滑脂或潤滑液等向外擴流而發生污損失頭的問 題。 【實施方式】 本發明可應用的範圍包含普通的工具紐裝置，例如鍵鎖式夾頭、手 旋式夾頭、自鎖式夾頭、套筒夾頭、快拆式夾頭、衝擊式夾頭…等。本案 最主要之技術思想係針對上述各式_巾_鱗工具的夾爪元件做鍍鈦 處理，於該夾爪元件的整體表面上形成—層麟硬膜，明進該夾爪元件 6 1291386 的耐磨耗特性。為便於解釋及說明本發明之技術思想，茲以一夾頭的具體 實施例綠圖表示，但並不以該實施例限制本發明之應用範圍。 如第一、二 '三圖，本案圖式中之夾頭實施例主要包含·· 一主軸（10)，其一端為驅動設備連接部（11)，用以與一驅動設備的旋 轉主軸連接；另一端為内螺紋之接合孔（12); -央爪鶴件⑽，其-端為外職柱⑵），連接於該主軸⑽之接 合孔（12)中；其另一端為夾爪連接部（a); 若干夾爪(30)，以其根部（31)分別連接於上述夾爪連接部（23); 一第一外殼(40)，套設於該主軸（1〇)外，可以旋向地自由轉動； 一夾爪座（50)，其一端穿套於上述之夾爪連接部外且容設並固定 於該第-外殼(40)中，該夾爪座(50)之另一端為雜體⑸），該錐狀體⑻ 上δ又有右干爽爪滑槽（52)，用以供上述的夾爪（洲）容設其中； -第二外殼⑽），套設於該夾爪座⑽外，並與該第—外殼(4〇)相連 固定；該第二外殼(60)内部設有-個錐狀内壁(61)，用以和上述夹爪座⑽） 之錐狀體(51)相契合； -轴承(70)，設於該第-外殼(4〇)之階勒壁⑹與主軸⑽外環⑽ 之間。 如第三、四圖，上述之主軸⑽被驅動設備之旋轉主軸驅動而旋轉， 因該夾爪座⑽被關_第-、第二外殼⑽)(⑻中，為—固定部件， 限制該等夹爪(3G)以及該夾爪驅動件⑽)轉動，因此該夾爪驅動件(2〇)之 旋向動能轉化為軸向舰而產生㈣的鶴。其㈣方向及產生的效果包 7 1291386 括：該主軸（10)往作用方向轉動時，該夾爪驅動件（20)向外伸長移動，該 等夾爪(30)沿著該夾爪座（5〇)的夾爪滑槽（52)且受該第二外殼(60)的錐狀 内壁（61)導引而朝第二外殼(60)的開放端移動，該等夾爪(3〇)漸向中心方 向靠攏而呈收束狀地產生夾制力，該夾制力可夾緊一工具，該工具之特定 用途可能是研磨、鑽孔、切割…等。反之，該主軸（1〇)相反於作用方向轉 動時，該夾爪驅動件（20)向主軸(1〇)的方向移動，該等夾爪(30)往第二外 殼(60)的内部縮動並漸向外張而喪失夾制力，該工具即可脫離夾頭。 如第五圖，在上述實施例中，每一夾爪(3〇)之整體均做鍍鈦處理，使 該夾爪表面包覆一層氮化鈦(TiN)硬膜、或碳化鈦(TiC)硬膜、或碳氮化鈦 (TiCN)硬膜、或氧化鈦(Ti〇)硬膜。簡述該等鍍鈦硬膜(go)之物理性質，其 維氏硬度(Hv)約1800〜2200Hv、摩擦係數(VSNi)約0· 4、融點（°C)約2950、 密度(g/cm)約5. 44、楊氏係數(l〇4kg f/m m2)約2· 6〜6· 2、熱傳導係數(Cal/ °C.sec.cm)約0·05〜0·07、熱膨脹係數(1〇/。(：）約9·2、氧化溫度（。〇約 500、表面粗糙度(Ra"+m)約〇· 15。利用該鍍鈦硬膜之物理性質，增加該夾 爪的耐熱性、抗磨性，也可使夾爪呈現不同於金屬本體的表面色澤，改變 該夾爪的顏色，使夾頭更美觀。 上述鍍鈦硬膜（80)亦可被氮化鍅硬膜所取代。 每一夾爪(30)在移動以及夾制工具時會形成許多的磨擦面，例如，該 夾爪(30)之根部（31)會與該夾爪驅動件(20)的夾爪連接部（23)形成磨擦， 該夾爪(30)的側面（32)會與該夾爪座（50)的夾爪滑槽(52)形成磨擦，該夾 爪（30)之夾制部（33)會與被夾制的工具形成磨擦。本案將整個夾爪(洲）予 1291386 以鑛鈦處琴可觀上述鱗面雜雜，躲雜面__題，以延 長夾頭的使轉命。*且鍍鈦硬膜是-種表面光滑的嶋膜，因此灰塵、 加工粉屑或其偏她細卩不容細著，且硬廳不會如切技術之濁滑脂 或'間β液等向外擴流而發生污損夾頭關題。 在本案巾触的倾厚度介魏_魏麵英奴間，較較佳的 加工方式係為賤鍍處理。 雖然本案是以一個最佳實施例做說明，但精於此技藝者能在不脫離本 案精神與料下做各_同形式敝變。社所舉實關個威明本案 已非用以限制本案之範圍。舉凡不違本案精神所從事的種種修改或變 化，倶屬本案申請專利範圍。 【圖式簡單說明】 第一圖係本案一較佳實施例之立體分解圖。 第二圖係本案一較佳實施例之組合外觀圖。 第三圖係第二圖中3—3剖面圖。 第四圖係依據第三圖表示爽爪鶴之示意圖。 第五圖係本案夾爪之立體外觀圖。 【主要元件符號說明】 10- 主轴 11- 驅動設備連接部 12- 接合孔 13- 外環 1291386 20- 爽爪驅動件 21- 外螺紋柱 23-夾爪連接部 30- 爽水 31- 根部 32- 側面 33- 夾制部 40- 第一外殼 41- 階層内壁 50- 夾爪座 51- 錐狀體 52- 夾爪滑槽 60- 第二外殼 61- 錐狀内壁 70-轴承 80-鍍鈦硬膜1291386 Nine, invention description: [Technical field to which the invention belongs] This case is related to the chuck, in more detail, especially the chuck of the tool machine tool. The design of the present invention is to improve the wear resistance of the jaw members in the collet. [Prior Art], Known _, is a tool for a number of jaws. The specific use of the tool may be grinding, drilling, cutting, etc. The collet_ has a configuration that controls the jaws to clamp or leave the tool. The configuration generally has a major axis, and a plurality of (usually two) jaws are equally spaced. The ground is centered about the spindle and a control element controls the jaws to move synchronously. When the jaws are moved synchronously toward the centerline of the spindle, a force can be generated that clamps the tool to the spindle centerline. Alternatively, the jaws are disengaged from the tool as they move away from the centerline of the spindle. The contact surfaces of the above-mentioned jaws with the main shaft, the control element and the tool may form friction, and excessive and improper friction may cause damage to the friction parts, which may cause the movement of the claws to be unsmoothed, and the control elements cannot effectively control the jaws. Movement, and the ability to clamp the jaws are reduced. The solution to these problems in the first month of the ίι technique is to platter the surface of the jaws or apply a thick layer of grease or lubricant to the jaws. Although this means does reduce the friction, grease or lubricating oil can easily cause various dirt and particles to collect, and it is easy to flow outward, thus smudging the claws and even the entire head. SUMMARY OF THE INVENTION The present invention proposes a new solution to solve the above problem of reducing the friction between the jaws and other components. 5 1291386 The wear-resistant precision chuck used in the tool tool of this case mainly includes: - the spindle 'the end is the connecting part of the driving equipment, which is used to connect with the rotating main wheel of the driving device; - the jaw driving part, the means of employment The other end of the jaw driving member is provided with a jaw connecting portion; the plurality of jaws are respectively connected with the root portion thereof to the jaw connecting portion; the outer portion of each jaw is covered with a dura mater A clamping jaw seat, one end of which is sleeved outside the above-mentioned jaw connecting portion, and the other end is provided with a cone-shaped body, and the cone-shaped body is provided with a plurality of jaw sliding grooves for respectively receiving the above-mentioned jaws. The main purpose of this case is to coat a layer of titanium nitride (TiN) hard film or titanium carbide (Ti〇, or Cyanide (Lion) hard film, or titanium oxide (10)) hard film on the surface of the jaw. Or a zirconium nitride (ZrN) hard film, which utilizes the physical properties of the hard films to increase the heat resistance and abrasion resistance of the jaws, and also allows the jaws to exhibit a surface color different from that of the metal body. In addition, the above hard film is a solid film having a smooth surface, so dust, processing dust or the like is not easily attached, and the hard film is not expanded as in the prior art grease or lubricating fluid. The problem of head loss due to the flow of pollution. [Embodiment] The scope of application of the present invention includes common tool button devices, such as a key lock type chuck, a hand-rotating chuck, a self-locking chuck, a sleeve chuck, a quick release chuck, and an impact clamp. Head...etc. The most important technical idea of the present invention is to perform titanium plating treatment on the jaw members of the above-mentioned various types of scaly tools, forming a layer of hard film on the entire surface of the jaw member, and clearing the jaw member 6 1291386 Wear resistance characteristics. For the purpose of explaining and explaining the technical idea of the present invention, it is indicated by a green figure of a specific embodiment of a collet, but the scope of application of the present invention is not limited by this embodiment. The first embodiment of the present invention includes a spindle (10) having a drive device connection portion (11) for connecting with a rotating spindle of a driving device; The other end is an internal threaded engagement hole (12); - a central claw-claw member (10), the end of which is an external post (2)), which is connected to the engagement hole (12) of the main shaft (10); and the other end is a jaw connection portion (a); a plurality of jaws (30) are respectively connected to the jaw connecting portion (23) by a root portion (31); a first outer casing (40) is sleeved outside the main shaft (1〇) and can be rotated Rotating to the ground; a clamping jaw (50), one end of which is sleeved outside the above-mentioned jaw connecting portion and received and fixed in the first housing (40), the other end of the clamping seat (50) For the hybrid body (5)), the δ on the tapered body (8) has a right-drying claw-slot chute (52) for receiving the above-mentioned jaw (continent); - the second outer casing (10) is sleeved in the clip Outside the claw seat (10), and fixed to the first outer casing (4〇); the second outer casing (60) is internally provided with a tapered inner wall (61) for tapering with the above-mentioned jaw seat (10) (51) Matching; - Bearing (7 0) is disposed between the stepped wall (6) of the first outer casing (4〇) and the outer ring (10) of the main shaft (10). As shown in the third and fourth figures, the above-mentioned main shaft (10) is driven to rotate by the rotating main shaft of the driving device, because the clamping jaw seat (10) is closed to the first and second outer casings (10) ((8) is a fixing member, limiting such The jaw (3G) and the jaw driver (10) rotate, so that the rotational kinetic energy of the jaw driver (2〇) is converted into an axial ship to produce a (four) crane. The (four) direction and the resulting effect package 7 1291386 include: when the main shaft (10) rotates in the direction of action, the jaw driving member (20) is extended outwardly, and the jaws (30) are along the jaw seat ( a jaw chute (52) and guided by a tapered inner wall (61) of the second outer casing (60) to move toward an open end of the second outer casing (60), the jaws (3〇) The progressive centering direction is close together and produces a clamping force that can clamp a tool. The specific use of the tool may be grinding, drilling, cutting, etc. On the contrary, when the main shaft (1〇) rotates in the opposite direction to the action direction, the jaw driving member (20) moves in the direction of the main shaft (1〇), and the jaws (30) are contracted toward the inside of the second outer casing (60). The tool moves outward and gradually loses its grip force, and the tool can be disengaged from the chuck. As shown in the fifth figure, in the above embodiment, each of the jaws (3〇) is titanium-plated, and the surface of the jaw is coated with a titanium nitride (TiN) hard film or titanium carbide (TiC). Hard film, or titanium carbonitride (TiCN) hard film, or titanium oxide (Ti〇) hard film. Briefly describe the physical properties of the titanium-coated hard films (go), which have a Vickers hardness (Hv) of about 1800 to 2200 Hv, a coefficient of friction (VSNi) of about 0.4, a melting point (°C) of about 2950, and a density (g/). Cm) about 5. 44, Young's coefficient (l〇4kg f/m m2) about 2·6~6·2, heat transfer coefficient (Cal/°C.sec.cm) about 0·05~0·07, thermal expansion Coefficient (1 〇 /. (:) about 9.2, oxidation temperature (. 〇 about 500, surface roughness (Ra " + m) about 〇 · 15. Using the physical properties of the titanium-coated hard film, increase the jaw The heat resistance and abrasion resistance can also make the jaws different from the surface color of the metal body, changing the color of the jaws, and making the chuck more beautiful. The titanium-coated hard film (80) can also be hardened by tantalum nitride. Replacement of the membrane. Each jaw (30) forms a plurality of friction surfaces when moving and clamping the tool, for example, the root (31) of the jaw (30) will be clamped to the jaw driver (20) The claw connecting portion (23) forms a friction, and a side surface (32) of the clamping jaw (30) forms friction with a jaw sliding groove (52) of the jaw seat (50), and the clamping portion of the clamping jaw (30) (33) will form friction with the clamped tool. This case will give the entire jaw (continent) to 12 91386 With the mineral titanium, the above-mentioned scales are obscured, and the __ questions are hidden to extend the life of the chuck. * And the titanium-coated dura mater is a kind of smooth film, so dust and processing dust Or her partiality can not be meticulous, and the hard hall will not be like the turbid grease of the cutting technology or the outward diffusion of the β-liquid and the fouling of the colloid. _Wei Wei Ying Nu, the better processing method is 贱 plating treatment. Although this case is illustrated by a best example, but the skilled person can do all the same without leaving the spirit of the case The form has changed. The social security case is not used to limit the scope of the case. Any amendments or changes that are not in violation of the spirit of the case are the scope of patent application in this case. [Simplified illustration] The figure is a perspective view of a preferred embodiment of the present invention. The second drawing is a combined view of a preferred embodiment of the present invention. The third drawing is a sectional view of 3 - 3 in the second figure. The fourth drawing is based on the third figure. The schematic diagram showing the cool claw crane. The fifth picture is the three-dimensional appearance of the jaw of the case. No. Description 10- Spindle 11 - Drive unit connection 12 - Engagement hole 13 - Outer ring 1291386 20- Cooling claw drive 21 - Externally threaded post 23 - Jaw connection 30 - Cool water 31 - Root 32 - Side 33 - Clamping portion 40 - first outer casing 41 - layer inner wall 50 - jaw seat 51 - taper 52 - jaw chute 60 - second outer casing 61 - tapered inner wall 70 - bearing 80 - titanium coated dura mater