201236782 六、發明說明： 【發明所屬之技術領域】 本發明與車床夾頭有關，特別是有關於—種結構簡4 且製造方便之車床夾頭。 匕 【先前技術】 目前的車床夾頭主要區分為自動操作及手動操作兩種 方式。就自動操作的方式而言，通常是使用油壓馬達作為 動力源，使各夾爪可受油壓馬達的驅動而移動，用以對工 件進行夾持，但是為了配合油壓馬達的設置，整個失頭的 裝配空間勢必會顯得相當複雜，容易造成日後維修的問 題’另外就手動操作的方式而言，係湘夾頭扳手轉動伞 齒輪，讓Φ錄驅轉舰轉，接著轉齡再軸導螺桿 旋轉，各夾爪収受導螺桿的驅動產生移動。然而，為了 此夠順利驅動夾爪移動，轉盤的兩側面必須經過高精度的 製造過程才能軸出不__，以供倾輪及導螺桿喷 合，因而在製造上會具有相當高的難度。 【發明内容】 之主要目在於提供—種車床夾頭，其能簡化結 構且k方便’並能提供良好的夾持效果。 使用目的在於提供—種車床夾頭，其能依據 使用者的需㈣翻手魅贱自動控制。 :、’、、成上述目的，本發明之車床失頭包含有一座體、 201236782 複數炎爪’以及一第一傳動裝置。該座體具有一中心孔及 複數滑槽，該等滑槽連通該中心孔且以該中心孔為軸心而 呈放射狀排列；各該夾爪分別可移動地設於該座體之滑槽 内’用以夾持工件，各該夾爪並具有一齒部；該第一傳動 裝置設於該座體内，並具有一傘齒盤、複數傘齒輪，以及 複數導螺管，其中’該傘齒盤可旋轉地位於該座體之中心 孔内，各該傘齒輪可旋轉地位於該座體之滑槽内且與該傘 齒盤嚙合，可受一動力源的驅動而帶動該第一傘齒盤旋 轉，各該導螺管套接於該傘齒輪之一軸桿且與該夾爪之齒 部嚙合，可隨著該傘齒輪的旋轉而帶動該夾爪朝該中心孔 移動，使各該夾爪對工件進行夾持。 藉由上述設計可知，本發明之車床夾頭可有效簡化結 構’並且不需要經過高精度的製造過料可順獅動各該 夾爪，同時亦能讓各該夾爪提供良好的夾持效果。 更佳地，本發明之車床夾頭於該座體内可再設置—第 -傳動裝置，係具有—傘齒盤及複數個傘齒輪，該第二傳 動裝置之麵射_齡_賴之—容㈣且與該第 -傳動裝置之傘齒盤相互連接，該第二傳動裝置之伞齒輪 可旋轉地位於該賴之一長_且鱗第二傳動裝置之伞 齒盤喃合H失頭扳手的驅動而帶動該第二傘齒盤旋 轉’讓該第二傘齒盤透過該第—傳姆置來帶動該爽爪移 【實施方式】 4 201236782 兹配合圖式列舉以下較佳實施例，用以對本發明之社 構及功效進行詳細說明。 吻先參閱第—至三圖，為本發明—較佳實施例之 夾頭10 ’包含有—座體20、五夾爪30、_第一傳動 40，以及一第二傳動裝置50。 、 座體20具有—中心孔2卜五滑槽22、-容孔23，以 及五長槽24。中心孔21位於座體2〇之一側面用以容納 工件；滑槽22以其一端連通中心孔2卜並以中心孔21為 軸心而呈放射狀排列；容孔23位於座體2G之另-側面且 與中心孔21之間以一間隔壁25而加以區隔，如第三圖所 不’間隔壁25具有一穿孔252，使得容孔23與中心孔21 之間經由穿孔252而同軸地相互連通；長槽24以其一端連 通容孔23且與滑槽22相互平行。 各夾爪30具有一齒條32及—夾持件34，齒條32嵌 设於座體20之滑槽22内而可沿著滑槽22相對座體20之 中心孔21移動，齒條32之兩侧面分別具有一齒部322 ; 炎持件34固定於#條32之一侧面，使夾持件34可隨著齒 條32移動，用以夾持工件。 第一傳動裝置40設於座體20内，並具有一第一傘齒 盤42、五個第一傘齒輪44，以及五個導螺管46。第一傘 齒盤42可旋轉地位於座體20之中心孔21内，並具有一插 入穿孔252内之第一連接部422，第一伞齒輪44可旋轉地 位於座體20之滑槽22内且與第一傘齒盤42嚙合，可受一 動力源(如油壓馬達)的驅動而帶動第一傘齒盤42旋轉；導 201236782 螺官46套接於第一傘齒輪44之一轴桿441且與爽爪扣 之齒條32的齒部322嚙合。 第二傳動裝置5〇設於座體2〇内並具有一第二伞齒 盤52及五個第二傘齒輪54。第二傘齒盤52可旋轉地位於 座體20之谷孔23内，並具有一插入穿孔252内之第二連 接部522 ’第二傘齒盤52以第二連接部Μ2與第一伞齒盤 42之第-連接部422作連接，使得第二伞齒盤&與第一 傘齒盤42能同步旋轉；第二傘齒輪％可旋轉地位於座體 2〇之長槽24岐與第功㈣52妨，可受—夾頭扳手 的驅動而帶動第二傘齒盤52旋轉。 經由上述結構可知，當其中一個第一伞齒輪44受到動 f區動而旋轉時，將透過與第-傘諸盤42之間的响合 盤42旋轉，使第一傘齒盤42再帶動其餘的 :齒輪44旋轉，此時的導螺管牝將會隨著所套接之 LI齒輪44同步旋轉，如此—來，各夾爪30會受到與 體目喃合之導螺管46的驅動而沿著座體2〇之滑槽^朝座 之中心孔21移動，用以對工件進行夹持。 面，本㈣之車床_ _可_手動方式進 :操作’在操作時係將夾頭扳手伸入座體 :内與位於該長槽24内之第二伞齒輪54接合其中 峰師第二 讀輪54的驅動而轉，並在旋 ==過舆盤42之間的迷接來帶動第- 伞齒盤42方疋轉，接著所有的第一傘齒輪44會受到第一傘 6 201236782 齒盤42的帶衫生旋轉，麟過 30朝座體20之中心孔21移動。 動各夹爪 Α 料知’本發明之車床夾财讓使用者選擇手 5八决兩種模式進行操作，在操作時係_傘齒輪之間 的5來驅動夾爪移動’除了可簡化座體内部的空間* 計’同時林需要經過高精度的製造過程即能順利驅動^ 爪，讓夾爪提供I好的鱗力，以確實_本㈣之目的。 本發明於前揭實施例中所揭露的構成元件，僅為舉例 説明，並非用來限制本案之範圍，其他等效元件的替代或 變化，亦應為本案之申請專利範圍所涵蓋。 201236782 【圖式簡單說明】 第一圖為本發明一較佳實施例之立體圖。 第二圖為本發明一較佳實施例之俯視圖。 第三圖為第一圖沿3-3剖線之剖視圖。 【主要元件符號說明】 車床夾頭10 座體20 中心孔21 滑槽22 容孔23 間隔壁25 穿孔252 長槽24 夾爪30 齒條32 夾持件34 第一傳動裝置40 第一傘齒盤42 第一連接部422 第一傘齒輪44 軸桿441 導螺管46 第二傳動裝置50 第二傘齒盤52 第二傘齒輪54201236782 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a lathe chuck, and in particular to a lathe chuck which is simple in structure and easy to manufacture.匕 [Prior Art] The current lathe chucks are mainly divided into automatic operation and manual operation. In the automatic operation mode, a hydraulic motor is usually used as a power source, so that each jaw can be driven by the hydraulic motor to clamp the workpiece, but in order to match the setting of the hydraulic motor, the whole The lost assembly space is bound to be quite complicated, and it is easy to cause problems in future maintenance. In addition, in terms of manual operation, the Xiang chuck wrench rotates the bevel gear, allowing the Φ recorder to turn the ship, and then turning the age and then guiding the shaft. The screw rotates, and each of the jaws receives the driving of the lead screw to generate movement. However, in order to smoothly drive the jaw movement, the two sides of the turntable must be subjected to a high-precision manufacturing process to be able to shaft out, for the tilting wheel and the lead screw to be sprayed, and thus it is quite difficult to manufacture. SUMMARY OF THE INVENTION The main object of the present invention is to provide a lathe chuck which can simplify the structure and is convenient and can provide a good gripping effect. The purpose of the use is to provide a kind of lathe chuck, which can be automatically controlled according to the user's needs (4). For the above purpose, the lathe of the present invention includes a body, a 201236782 plurality of paws, and a first transmission. The base body has a central hole and a plurality of sliding slots. The sliding slots communicate with the central hole and are radially arranged with the central hole as an axis. Each of the clamping jaws is movably disposed on the sliding groove of the base body. The inner portion is for holding the workpiece, and each of the jaws has a tooth portion; the first transmission device is disposed in the seat body and has a bevel disk, a plurality of bevel gears, and a plurality of guide solenoids, wherein The bevel gear is rotatably located in the central hole of the seat body, and each of the bevel gears is rotatably located in the sliding groove of the seat body and meshes with the bevel disk, and is driven by a power source to drive the first The bevel disk rotates, and each of the guide coils is sleeved on one of the shafts of the bevel gear and meshes with the tooth portion of the bevel gear, and the jaws are moved toward the center hole as the bevel gear rotates, so that each The jaws grip the workpiece. As can be seen from the above design, the lathe chuck of the present invention can effectively simplify the structure' and does not require high precision manufacturing of the material to oscillate the jaws, and also allows each of the jaws to provide a good gripping effect. More preferably, the lathe chuck of the present invention can be further disposed in the body - the first transmission device has a bevel gear plate and a plurality of bevel gears, and the second transmission device has a face-to-face _ _ And (4) and interconnected with the bevel gear of the first transmission, the bevel gear of the second transmission is rotatably located at one of the lengths of the yoke and the second gear of the scale is snarled with a H-head wrench Driving the second bevel disk to rotate 'to let the second bevel disk pass the first pass to bring the cool claw to move 【Embodiment】 4 201236782 The following preferred embodiment is used in conjunction with the drawings. The structure and efficacy of the present invention will be described in detail. The kiss first refers to the first to third figures, and the collet 10' of the preferred embodiment of the present invention comprises a body 20, five jaws 30, a first transmission 40, and a second transmission 50. The base 20 has a central hole 2, a five-slot 22, a bore 23, and a five-long slot 24. The central hole 21 is located at one side of the seat body 2 to receive the workpiece; the sliding groove 22 is connected to the center hole 2 at one end thereof and radially arranged with the center hole 21 as an axis; the hole 23 is located at the other side of the seat body 2G. a side surface and spaced apart from the central opening 21 by a partition wall 25, as in the third figure, the partition wall 25 has a perforation 252 such that the bore 23 and the central bore 21 are coaxially connected via the perforations 252 The long grooves 24 communicate with the bore 23 at one end thereof and are parallel to the chute 22 . Each of the jaws 30 has a rack 32 and a clamping member 34. The rack 32 is embedded in the sliding slot 22 of the base 20 and movable along the slot 22 relative to the central opening 21 of the base 20. The rack 32 Each of the two sides has a tooth portion 322; the inflaming member 34 is fixed to one side of the #32, so that the holder 34 can move along with the rack 32 for holding the workpiece. The first transmission 40 is disposed within the base 20 and has a first bevel disk 42, five first bevel gears 44, and five pilot solenoids 46. The first bevel disk 42 is rotatably disposed in the central bore 21 of the base 20 and has a first connecting portion 422 inserted into the through hole 252. The first bevel gear 44 is rotatably disposed in the sliding slot 22 of the base 20. And engaging with the first bevel disk 42 to be driven by a power source (such as a hydraulic motor) to drive the first bevel disk 42 to rotate; the guide 201236782 is attached to one of the first bevel gears 44 441 and mesh with the tooth portion 322 of the rack 32 of the cool claw buckle. The second transmission device 5 is disposed in the base 2 and has a second bevel disk 52 and five second bevel gears 54. The second bevel disk 52 is rotatably disposed in the valley hole 23 of the base body 20 and has a second connecting portion 522 inserted into the through hole 252. The second bevel disk 52 has a second connecting portion Μ2 and a first bevel tooth. The first connecting portion 422 of the disk 42 is connected such that the second bevel disk & can rotate synchronously with the first bevel disk 42; the second bevel gear is rotatably located in the long slot 24 of the base 2 The function (4) 52 may be driven by the chuck wrench to drive the second bevel disk 52 to rotate. It can be seen from the above structure that when one of the first bevel gears 44 is rotated by the movement f, the reciprocating disk 42 between the first and the bevel disks 42 is rotated, so that the first bevel disk 42 is driven again. The gear 44 rotates, and the guide solenoid 此时 will rotate synchronously with the sleeved LI gear 44, so that each of the jaws 30 will be driven by the body-guided guide screw 46. The sliding groove 2 along the seat body 2 is moved toward the center hole 21 of the seat for clamping the workpiece. Face, the (4) lathe _ _ can _ manual way into: operation 'in the operation of the chuck wrench into the seat: inside the second bevel gear 54 located in the long groove 24 engaged in the second division of the peak The drive of the wheel 54 rotates, and the splicing between the rotation == over the disk 42 drives the first spur gear 42 to rotate, and then all the first bevel gears 44 are subjected to the first umbrella 6 201236782 The belt of the 42 is rotated, and the lining over 30 moves toward the center hole 21 of the seat body 20. It is known that the lathe clamp of the present invention allows the user to select the two modes of operation, and the operation between the _ bevel gears 5 to drive the jaw movement 'except for simplifying the seat body The internal space* counts 'At the same time, the forest needs to be driven by a high-precision manufacturing process to smoothly drive the claws, so that the jaws provide a good scale force for the purpose of the actual (4). The constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. The alternative or variations of other equivalent elements are also covered by the scope of the patent application. 201236782 [Simple Description of the Drawings] The first figure is a perspective view of a preferred embodiment of the present invention. The second figure is a top view of a preferred embodiment of the invention. The third figure is a cross-sectional view of the first figure taken along line 3-3. [Main component symbol description] Lathe chuck 10 Seat 20 Center hole 21 Chute 22 Hole 23 Partition wall 25 Perforation 252 Long groove 24 Claw 30 Rack 32 Clamping piece 34 First transmission 40 First bevel gear 42 first connecting portion 422 first bevel gear 44 shaft 441 guide screw 46 second transmission 50 second bevel disk 52 second bevel gear 54