TWI671481B - Cooled ball screw device for multi-tooth circulation - Google Patents
Cooled ball screw device for multi-tooth circulation Download PDFInfo
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Abstract
一種可用於多牙口循環的冷卻式滾珠螺桿裝置，包含一螺桿、一螺帽單元及至少一冷卻架橋單元。該螺桿具有複數外導螺紋部，該螺帽單元透過複數滾珠組螺設於該螺桿，且包括二端部、複數迴流通道組及一冷卻通道組， 該等迴流通道組各具有一內導螺紋部、一軸向通孔及二循環端件，該冷卻通道組的其中二圍繞一軸線間隔設置的冷卻流道之間供其中一個軸向通孔設置，該冷卻架橋單元包括一橋接件，該橋接件具有一架橋主體，以及二連接於該架橋主體的連接管，該架橋主體對應於其中一循環端件且跨置於兩個冷卻流道之間。利用該冷卻架橋單元的設置可適於多牙口滾珠螺桿，且可達到冷卻目的。The utility model relates to a cooling type ball screw device which can be used for multi-dental circulation, comprising a screw, a nut unit and at least one cooling bridge unit. The screw has a plurality of externally threaded portions, and the nut unit is provided on the screw through a plurality of ball group screws, and includes two ends, a plurality of return channel groups and a cooling channel group, each of which has an internal guide thread An axial through-hole and two circulation end pieces, two of the cooling channel group are provided with one axial through-hole between cooling passages spaced around an axis, and the cooling bridging unit includes a bridge, the The bridge member has a bridge main body and two connecting pipes connected to the bridge main body. The bridge main body corresponds to one of the circulation end pieces and is straddled between two cooling channels. The setting of the cooling bridging unit can be adapted to a multi-nozzle ball screw, and the cooling purpose can be achieved.
Description
本發明是有關於一種冷卻式滾珠螺桿，特別是指一種可用於多牙口循環的冷卻式滾珠螺桿裝置。 The present invention relates to a cooling ball screw, in particular to a cooling ball screw device which can be used for multi-dental circulation.
現有一種雙牙口的滾珠螺桿(台灣證書號數第M467770號專利案)，該滾珠螺桿具有二組分別獨立且供二滾珠組循環運轉之滾珠循環通道，每一滾珠循環通道包括一各自形成於螺桿外表面的軌道槽、一設置於一螺帽本體之一內周面的內滾珠槽、一設置於該螺帽本體的內周面與一外周面之間的迴流通道，以及二分設於該螺帽本體兩側的端部循環端件，該等端部循環端件各具有一與該迴流通道、該內滾珠槽互相連通的迴流彎道。這種雙牙口的滾珠螺桿沒有冷卻流道的設計，滾珠螺桿運轉時容易因高溫致使零件產生熱變形，且會影響加工精度及加工效能。 There is currently a double-mouthed ball screw (Taiwan Certificate No. M467770 patent case). The ball screw has two sets of ball circulation channels that are independent and are used for circulating operation of the two ball groups. Each ball circulation channel includes a separate formed on the screw A track groove on the outer surface, an inner ball groove provided on an inner peripheral surface of a nut body, a return passage provided between the inner peripheral surface of the nut body and an outer peripheral surface, and two points provided on the nut End circulation end pieces on both sides of the cap body, each of the end circulation end pieces has a return curve that communicates with the return channel and the inner ball groove. This double-mouthed ball screw does not have a cooling flow channel design. When the ball screw is running, it is easy to cause thermal deformation of the part due to high temperature, and it will affect the processing accuracy and processing efficiency.
現有另一種滾珠螺桿(台灣證書號數第I230232號專利案)，為了使該滾珠螺桿達到冷卻目的，且提昇加工精度及效能，是在螺帽內部設有多數沿軸向連通於二端部之間的冷卻通孔，且該 螺帽兩側分別設置一端蓋，該等端蓋內部設有多數供相鄰二冷卻通孔互相連通的槽溝。 There is another ball screw (Taiwan Certificate No. I230232 patent case). In order to achieve the cooling purpose of the ball screw and improve the processing accuracy and efficiency, most of the ball screws are axially connected to the two ends. Cooling vias, and this One end cap is provided on each side of the nut, and most of the end caps are provided with grooves for the two adjacent cooling through holes to communicate with each other.
這種滾珠螺桿雖然利用冷卻流體流經該等冷卻通孔、該等槽溝，可使螺帽達到冷卻目的，但是並不適用於多牙口滾珠循環結構，主要是因為多牙口滾珠循環結構是在螺帽內部設有複數迴流通道組，每一個迴流通道組具有一螺旋繞設於該螺帽一內環面的內導螺紋部、一沿軸向設置的軸向通孔，以及二分別對應於該螺帽二相反端部且導通於該軸向通孔與所對應的內導螺紋部的循環端件。至少會有一個迴流通道組的軸向通孔與冷卻流道交叉、導通。亦即，在該螺帽的二端部安裝可提供滾珠循環滾動的循環端件，為了要安裝該等循環端件，必須在螺帽開設凹孔，部分凹孔會破壞冷卻通孔、槽溝的氣密性。 Although this ball screw uses a cooling fluid to flow through the cooling through holes and grooves, the nut can be cooled, but it is not suitable for a multi-point ball circulation structure, mainly because the multi-point ball circulation structure is A plurality of return channel groups are provided inside the nut, and each return channel group has an internal guide screw portion spirally wound on an inner annular surface of the nut, an axial through hole provided in the axial direction, and two corresponding to The two opposite end portions of the nut are communicated with the circulating end pieces of the axial through hole and the corresponding internal guide screw portion. At least one axial through hole of the return channel group intersects with the cooling flow channel and conducts electricity. That is, the two end portions of the nut are provided with circulating end pieces that can provide ball rolling. In order to install such circulating end pieces, recessed holes must be opened in the nut. Some recessed holes will damage the cooling through holes and grooves. Air tightness.
現有又一種滾珠螺桿(台灣證書號數第M532003號專利案)，也是一種僅適用於單牙口且具冷卻流道的滾珠螺桿。顯然，多牙口滾珠螺桿的冷卻循環結構亟待被開發。 Another ball screw (Taiwan Certificate No. M532003 patent) is also a ball screw that is only suitable for a single mouth and has a cooling channel. Obviously, the cooling cycle structure of the multi-nozzle ball screw needs to be developed urgently.
因此，本發明之目的，即在提供一種能避免零件產生熱變形的可用於多牙口循環的冷卻式滾珠螺桿裝置。 Therefore, it is an object of the present invention to provide a cooling ball screw device which can be used for multi-dental circulation and can avoid thermal deformation of parts.
於是，本發明可用於多牙口循環的冷卻式滾珠螺桿裝置，包含一螺桿、一螺帽單元及至少一冷卻架橋單元。該螺桿沿一 軸線延伸，並具有一外周面，以及複數螺旋繞設於該外周面的外導螺紋部，該螺帽單元透過複數滾珠組螺設於該螺桿，且包括二沿該軸線呈相反設置的端部、一連通該等端部且圍繞該軸線並可界定出一軸孔的內環面、複數對應於該等外導螺紋部而設置於該等端部之間的迴流通道組，以及一迴繞設置於該等端部之間的冷卻通道組，該等迴流通道組各具有一螺旋繞設於該內環面且相對於該等外導螺紋部的內導螺紋部、一對應該軸線延伸且設置於該等端部之間的軸向通孔，以及二分別對應於該等端部且導通於該軸向通孔與所對應的內導螺紋部的循環端件，每一迴流通道組與每一外導螺紋部共同界定出一供每一滾珠組循環運轉的滾珠循環通道，該冷卻通道組具有多數圍繞該軸線間隔設置的冷卻流道，以及多數設置於該等端部且導通於該等冷卻流道的連通部，每一迴流通道組的軸向通孔介於兩個圍繞該軸線相鄰設置的冷卻流道之間，該冷卻架橋單元安裝於該螺帽單元的其中一端部，該冷卻架橋單元包括一橋接件，該橋接件具有一架橋主體，以及二連接於該架橋主體的連接管，該架橋主體對應於其中一循環端件且跨置於兩個圍繞該軸線設置於該循環端件兩側的冷卻流道之間，該架橋主體呈中空狀，且與該等連接管共同界定出一與該冷卻通道組互相連通的導流道。 Therefore, the cooling ball screw device of the present invention which can be used for multi-dental circulation includes a screw, a nut unit and at least one cooling bridge unit. The screw along a The axis extends and has an outer peripheral surface and a plurality of externally threaded screw portions spirally wound on the outer peripheral surface. The nut unit is provided on the screw through a plurality of ball group screws, and includes two ends disposed opposite to each other along the axis. An inner annular surface that communicates with the ends and surrounds the axis and can define a shaft hole; a plurality of return passage groups provided between the ends corresponding to the externally threaded portions; and a wrap around The cooling channel groups between the end portions, and the return channel groups each have an internal guide screw portion spirally wound on the inner annular surface and opposite to the external guide screw portions, and a pair of corresponding axis extensions are provided at Axial through-holes between the ends, and two circulating end pieces that correspond to the ends and are in communication with the axial through-holes and the corresponding internally-guided thread portions, each return channel group and each The outer threaded portions jointly define a ball circulation channel for each ball group to circulate. The cooling channel group has a plurality of cooling channels arranged at intervals around the axis, and most of the cooling channels are arranged at the ends and are connected to the cooling. Communicating part The axial through hole of each return channel group is between two cooling flow channels adjacently arranged around the axis. The cooling bridge unit is installed at one end of the nut unit. The cooling bridge unit includes a bridge. The bridge member has a bridge main body and two connecting pipes connected to the bridge main body. The bridge main body corresponds to one of the circulation end pieces and straddles two cooling flows provided on both sides of the circulation end piece around the axis. Between the channels, the bridge body is hollow, and together with the connecting pipes, a diversion channel communicating with the cooling channel group is defined.
本發明之功效在於：利用該冷卻架橋單元跨置於兩個冷卻流道之間，不但可適於多牙口滾珠螺桿，且可使該螺帽本體產生較佳之冷卻效果，可提昇加工精度及加工效能。 The effect of the present invention is that the cooling bridging unit is used to span between two cooling channels, which is not only suitable for a multi-nozzle ball screw, but also enables the nut body to produce a better cooling effect, which can improve processing accuracy and processing. efficacy.
10‧‧‧螺桿 10‧‧‧ Screw
223‧‧‧循環端件 223‧‧‧Circular end piece
L‧‧‧軸線 L‧‧‧ axis
11‧‧‧外周面 11‧‧‧ outer surface
12‧‧‧外導螺紋部 12‧‧‧ external thread
20‧‧‧螺帽單元 20‧‧‧nut unit
21‧‧‧螺帽本體 21‧‧‧nut body
211‧‧‧端部 211‧‧‧ tip
211’‧‧‧端部 211’‧‧‧ end
212‧‧‧軸孔 212‧‧‧shaft hole
213‧‧‧內環面 213‧‧‧Inner torus
214‧‧‧端面 214‧‧‧face
214’‧‧‧端面 214’‧‧‧ end face
215‧‧‧凹槽 215‧‧‧Groove
215’‧‧‧凹槽 215’‧‧‧ groove
216‧‧‧承孔 216‧‧‧Through hole
217‧‧‧引入管 217‧‧‧Introduction tube
217’‧‧‧導出管 217’‧‧‧Export tube
218‧‧‧沉凹部 218‧‧‧Sink
219‧‧‧鎖孔 219‧‧‧ keyhole
22‧‧‧迴流通道組 22‧‧‧ Return channel group
221‧‧‧內導螺紋部 221‧‧‧ Internal guide thread
222‧‧‧軸向通孔 222‧‧‧Axial through hole
23‧‧‧冷卻通道組 23‧‧‧cooling channel group
231‧‧‧冷卻流道 231‧‧‧cooling runner
232‧‧‧端塞 232‧‧‧End plug
233‧‧‧連通部 233‧‧‧Connecting Department
30‧‧‧冷卻架橋單元 30‧‧‧ Cooling bridge unit
31‧‧‧橋接件 31‧‧‧bridge
311‧‧‧架橋主體 311‧‧‧Bridge main body
312‧‧‧連接管 312‧‧‧ connecting pipe
313‧‧‧導流道 313‧‧‧Diversion channel
314‧‧‧外側面 314‧‧‧ outside
315‧‧‧內側面 315‧‧‧ inside
316‧‧‧導槽 316‧‧‧Guide
32‧‧‧封蓋件 32‧‧‧ cover
321‧‧‧主板部 321‧‧‧Motherboard Department
322‧‧‧耳部 322‧‧‧ear
323‧‧‧穿孔 323‧‧‧perforation
33‧‧‧防漏件 33‧‧‧Leakproof
34‧‧‧密封環 34‧‧‧sealing ring
35‧‧‧螺絲 35‧‧‧screw
40‧‧‧滾珠組 40‧‧‧ball set
本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是本發明可用於多牙口循環的冷卻式滾珠螺桿裝置的一實施例的一立體組合示意圖；圖2是該實施例的另一視角的立體組合示意圖；圖3是該實施例的一立體分解圖；圖4是圖3的一不完整的立體分解示意圖；圖5是該實施例之一側視圖；圖6是沿圖5中之線Ⅵ-Ⅵ的一剖面圖；及圖7是該實施例之一平面展開示意圖，說明一冷卻通道組與二迴流通道組的配置示意。 Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a three-dimensional schematic diagram of an embodiment of the cooling ball screw device of the present invention which can be used for multi-dental circulation; FIG. 2 is a schematic perspective combination view of the embodiment from another perspective; FIG. 3 is an exploded perspective view of the embodiment; FIG. 4 is an incomplete exploded perspective view of FIG. 3; and FIG. 5 is a side view of the embodiment FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5; and FIG. 7 is a schematic plan development view of the embodiment, illustrating the configuration of a cooling channel group and a second return channel group.
參閱圖1至圖4，本發明可用於多牙口循環的冷卻式滾珠螺桿裝置之一實施例，包含一螺桿10、一螺帽單元20及一冷卻架橋單元30。本發明的實施例是以雙牙口之滾珠螺桿裝置做說明，但亦可為三牙口、四牙口(圖未示)。 Referring to FIG. 1 to FIG. 4, an embodiment of a cooling ball screw device that can be used for multi-dental circulation according to the present invention includes a screw 10, a nut unit 20, and a cooling bridge unit 30. The embodiment of the present invention is described by using a ball screw device with two teeth, but it can also be three teeth or four teeth (not shown).
該螺桿10沿一軸線L延伸，並具有一外周面11，以及二螺旋繞設於該外周面11的外導螺紋部12。 The screw 10 extends along an axis L and has an outer peripheral surface 11 and two externally threaded portions 12 spirally wound around the outer peripheral surface 11.
該螺帽單元20透過二滾珠組40螺設於該螺桿10，且包括一螺帽本體21、二對應於該等外導螺紋部12而設置於該螺帽本體21的迴流通道組22，以及一設置於該螺帽本體21的冷卻通道組23。 The nut unit 20 is screwed to the screw 10 through two ball groups 40, and includes a nut body 21, two return passage groups 22 corresponding to the externally threaded portions 12, and disposed on the nut body 21, and A cooling channel group 23 is disposed on the nut body 21.
該螺帽本體21具有二沿該軸線L呈相反設置的端部211、211’、一連通該等端部211、211’且圍繞該軸線L並可界定出一軸孔212的內環面213，該等端部211、211’各具有一端面214、214’、多數由該端面214、214’凹設且呈彎月狀的凹槽215、215’、二由該端面214、214’凹設並連通該內環面213的承孔216，其中一端面214還連接有一引入管217及一導出管217’，另一端面214’還具有一由該端面214’凹設且與其中一個承孔216相連通的沉凹部218，以及二由該端面214’鑽設且設置於該沉凹部218外圍的鎖孔219。 The nut body 21 has two end portions 211 and 211 ′ disposed opposite to each other along the axis L, an inner ring surface 213 that communicates with the end portions 211 and 211 ′ and surrounds the axis L and can define a shaft hole 212. The end portions 211, 211 'each have an end surface 214, 214', and most of the end portions 214, 214 'are concave and meniscus-shaped grooves 215, 215', and the two end portions are recessed by the end surfaces 214, 214 '. One of the end faces 214 is also connected to an introduction pipe 217 and an outlet pipe 217 ', and the other end face 214' also has a receiving hole recessed from the end face 214 'and connected to one of the bearing holes 216. A recessed portion 218 that communicates with 216, and two lock holes 219 drilled from the end surface 214 'and disposed on the periphery of the recessed portion 218.
該等迴流通道組22各具有一螺旋繞設於該內環面213且相對於該等外導螺紋部12的內導螺紋部221、一對應該軸線L延伸且設置於該等端部211、211’之間的軸向通孔222，以及二分別對應於該等端部211、211’且導通於該軸向通孔222與所對應的內導螺紋部221的循環端件223，該等循環端件223分別安裝於該等承 孔216中，每一迴流通道組22與每一外導螺紋部12共同界定出一供每一滾珠組40循環運轉的滾珠循環通道，該等迴流通道組22的軸向通孔222圍繞該軸線L相隔180度。若為三牙口之滾珠螺桿裝置，則該等迴流通道組的軸向通孔圍繞該軸線L相隔120度(圖未示)，若為四牙口之滾珠螺桿裝置，則該等迴流通道組的軸向通孔圍繞該軸線L相隔90度(圖未示)。該等循環端件223分別安裝於該螺帽本體21的承孔216中。 Each of the return channel groups 22 has an internal guide screw portion 221 spirally wound on the inner annular surface 213 and opposite to the external guide screw portions 12, and a pair of corresponding axial lines L are provided on the end portions 211, An axial through hole 222 between 211 ', and two circulating end pieces 223 corresponding to the end portions 211, 211', respectively, and communicating with the axial through hole 222 and the corresponding internal guide screw portion 221, etc. Circulating end pieces 223 are respectively installed on the bearing In the hole 216, each return channel group 22 and each outer threaded portion 12 define a ball circulation channel for each ball group 40 to circulate. The axial through holes 222 of the return channel groups 22 surround the axis. L is 180 degrees apart. If it is a three-mouth ball screw device, the axial through holes of the return channel groups are spaced 120 degrees around the axis L (not shown). If it is a four-mouth ball screw device, the axes of the return channel groups are The through holes are spaced 90 degrees around the axis L (not shown). The circulating end pieces 223 are respectively installed in the receiving holes 216 of the nut body 21.
配合參圖7，該冷卻通道組23具有多數圍繞該軸線L間隔設置的冷卻流道231，以及多數分別對應於該等端部211、211’的端塞232，其中一冷卻流道231連接於該引入管217且可引入冷卻流體，圍繞該軸線L位於該冷卻流道231一側且與該冷卻流道231相隔幅角約270度的另一冷卻流道231則連接於該導出管217’且可排出吸熱後的流體。該等端塞232分別安裝於該等凹槽215、215’中，該等端塞232各具有一連通於圍繞該軸線L相鄰設置的兩個冷卻流道231之間且呈凹孔狀的連通部233。每一迴流通道組22的軸向通孔222介於兩個圍繞該軸線L相鄰設置的冷卻流道231之間。 With reference to FIG. 7, the cooling channel group 23 has a plurality of cooling passages 231 disposed at intervals around the axis L, and a plurality of end plugs 232 corresponding to the ends 211 and 211 ′, respectively. One of the cooling passages 231 is connected to The introduction pipe 217 can introduce a cooling fluid. Another cooling passage 231 located on the side of the cooling passage 231 around the axis L and spaced from the cooling passage 231 by an angle of about 270 degrees is connected to the outlet pipe 217 '. And can discharge the fluid after heat absorption. The end plugs 232 are respectively installed in the grooves 215, 215 ', and each of the end plugs 232 has a recessed hole shape that communicates between two cooling flow channels 231 disposed adjacently around the axis L.通信 部 233。 The communication portion 233. An axial through hole 222 of each return channel group 22 is interposed between two cooling flow channels 231 disposed adjacently around the axis L.
如圖5及圖6所示，該冷卻架橋單元30安裝於該螺帽單元20的其中一端部211’且安裝於該沉凹部218，並對應於其中一循環端件223且跨置於兩個圍繞該軸線L設置於該循環端件223兩側的冷卻流道231之間，並具有一橋接件31、一氣密地組裝於該橋接 件31的封蓋件32、一安裝於該橋接件31與該封蓋件32之間的防漏件33、二氣密地安裝於該橋接件31與所對應的冷卻流道231之間的密封環34，以及多數螺絲35。 As shown in FIG. 5 and FIG. 6, the cooling bridge unit 30 is installed on one end portion 211 ′ of the nut unit 20 and on the recessed portion 218, and corresponds to one of the circulating end pieces 223 and is placed across two It is arranged between the cooling flow channels 231 on both sides of the circulation end piece 223 around the axis L, and has a bridge 31 and an airtight assembly on the bridge. A cover member 32 of the member 31, a leak-proof member 33 installed between the bridge member 31 and the cover member 32, and two air-tightly installed between the bridge member 31 and the corresponding cooling channel 231 Seal ring 34, and most screws 35.
該橋接件31具有一架橋主體311、二連接於該架橋主體311的連接管312，該架橋主體311呈中空狀，且與該連接管312共同界定出一與該冷卻通道組23互相連通的導流道313。 The bridge member 31 has a bridge body 311 and two connecting pipes 312 connected to the bridge body 311. The bridge body 311 is hollow, and together with the connecting pipe 312, a guide communicating with the cooling channel group 23 is defined. Runner 313.
該架橋主體311具有一對應於該端面214’的外側面314、一對應該軸線L相反於該外側面321的內側面315，以及一由該外側面314朝該內側面315凹設的導槽316，該內側面315相對於其中一循環端件223，該等連接管312連接於該內側面315。 The bridge body 311 has an outer side surface 314 corresponding to the end surface 214 ′, a pair of inner side surfaces 315 corresponding to the axis L opposite to the outer side surface 321, and a guide groove recessed from the outer side surface 314 toward the inner side surface 315. 316, the inner side surface 315 is opposite to one of the circulation end pieces 223, and the connecting pipes 312 are connected to the inner side surface 315.
該封蓋件32氣密地定位於該外側面314且對應於該端面214’，該封蓋件32具有一可封閉該導槽316的主板部321，以及多數連接於該主板部321的耳部322，該等耳部322各具有一對應於該等鎖孔219的穿孔323。 The cover member 32 is air-tightly positioned on the outer side surface 314 and corresponds to the end surface 214 ′. The cover member 32 has a main plate portion 321 that can close the guide groove 316, and most ears connected to the main plate portion 321. Each of the ears 322 has a through hole 323 corresponding to the lock holes 219.
該防漏件33安裝於該橋接件31的外側面314與該封蓋件32的主板部321之間，可使該導槽316氣密。 The leakage prevention member 33 is installed between the outer side surface 314 of the bridge member 31 and the main plate portion 321 of the cover member 32, so that the guide groove 316 can be airtight.
該等密封環34氣密地安裝於該等連接管312與所對應的冷卻流道231之間。 The seal rings 34 are air-tightly installed between the connection pipes 312 and the corresponding cooling channels 231.
該等螺絲35穿設於該等穿孔323且螺鎖於該等鎖孔219，可使該冷卻架橋單元30呈可拆卸地固定於該螺帽單元20的其中一端部211’。 The screws 35 pass through the through holes 323 and are screwed into the lock holes 219, so that the cooling bridge unit 30 can be detachably fixed to one end portion 211 ′ of the nut unit 20.
為供進一步瞭解本發明各元件配合所產生的作用、運用技術手段，以及所預期達成之功效，茲再說明如下，相信當可由此而對本發明有更深入且具體之瞭解。 In order to further understand the function, technical means, and expected effects of the various components of the present invention, it is further explained below. I believe that the present invention will have a deeper and more specific understanding.
再如圖1、圖2所示，當本發明可用於多牙口循環的冷卻式滾珠螺桿裝置整體組配完成後，利用該螺帽單元20套設於該螺桿10外部，並利用該等迴流通道組22可供該等滾珠組40循環運轉的作用，可使該螺帽單元20沿該螺桿10產生順暢的線性位移。 As shown in FIG. 1 and FIG. 2, after the cooling ball screw device that can be used in the multi-mouth circulation of the present invention is completely assembled, the nut unit 20 is set on the outside of the screw 10 and the return channels are used. The group 22 can be used for the cyclic operation of the ball groups 40, so that the nut unit 20 can produce a smooth linear displacement along the screw 10.
再如圖6及圖7所示，利用該螺帽單元20的冷卻通道組23與該冷卻架橋單元30的配合，且如圖7虛線箭頭所示，當冷卻流體自該引入管217引入於該冷卻通道組23時，經過該等冷卻流道231與該等端塞232的連通部233的順利導流，可使冷卻流體迂迴地流經該螺帽本體21的各部位，且使該螺帽本體21達到冷卻目的，最後吸熱後的流體可自該導出管217’排出。 As shown in FIG. 6 and FIG. 7, the cooling channel group 23 of the nut unit 20 and the cooling bridge unit 30 are matched, and as shown by the dotted arrow in FIG. 7, when the cooling fluid is introduced from the introduction pipe 217 into the When the cooling channel group 23 is cooled, the smooth flow of the fluid through the communication portions 233 of the cooling flow channels 231 and the end plugs 232 allows the cooling fluid to flow around the parts of the nut body 21 in a roundabout manner, and the nut The body 21 achieves the purpose of cooling, and the fluid after the last heat absorption can be discharged from the outlet pipe 217 '.
再如圖5、圖6及圖7所示，利用該冷卻架橋單元30對應於其中一循環端件223且跨置於兩個圍繞該軸線L設置於該循環端件223兩側的冷卻流道231之間，則不會使得該冷卻通道組23與該等迴流通道組22產生交叉或干涉，所以不會破壞該冷卻通道組23 的氣密性，也不會影響該等迴流通道組22與該等滾珠組40的運轉順暢性。 As shown in FIG. 5, FIG. 6, and FIG. 7, the cooling bridging unit 30 corresponds to one of the circulation end pieces 223 and straddles two cooling flow channels provided on both sides of the circulation end piece 223 around the axis L. Between 231, the cooling channel group 23 and the return channel groups 22 will not cross or interfere, so the cooling channel group 23 will not be damaged. The air-tightness does not affect the smooth running of the return channel groups 22 and the ball groups 40.
再者，本發明利用該冷卻架橋單元30的設置，可使多牙口的滾珠螺桿裝置，也能產生較佳的冷卻效果，可提昇加工精度及加工效能，可以解決長久以來多牙口滾珠螺桿的冷卻不足的問題。 Furthermore, the present invention utilizes the arrangement of the cooling bridge unit 30 to enable the ball screw device with multiple teeth to also produce better cooling effects, improve processing accuracy and processing efficiency, and can solve the cooling of the ball screw with multiple teeth for a long time. Insufficient problems.
值得一提的是，本發明的冷卻架橋單元30為多件式設計，主要由該橋接件31及該封蓋件32組裝而成，事實上，該冷卻架橋單元30也可製成單件式(圖未示)，也可達到預期的目的及功效。 It is worth mentioning that the cooling bridge unit 30 of the present invention is a multi-piece design, which is mainly assembled by the bridge member 31 and the cover member 32. In fact, the cooling bridge unit 30 can also be made into a single piece. (Not shown), can also achieve the intended purpose and efficacy.
綜上所述，本發明可用於多牙口循環的冷卻式滾珠螺桿裝置，整體結構簡單、製造組配容易，確實可解決存在已久的多牙口滾珠螺桿的冷卻問題，確實能達成本發明之目的。 To sum up, the present invention can be used for a cooling-type ball screw device with a multi-point mouth circulation. The overall structure is simple and the manufacturing and assembly are easy. It can indeed solve the cooling problem of the long-term multi-point ball screw. It can indeed achieve the purpose of the invention. .
惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107143467A TWI671481B (en) | 2018-12-04 | 2018-12-04 | Cooled ball screw device for multi-tooth circulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107143467A TWI671481B (en) | 2018-12-04 | 2018-12-04 | Cooled ball screw device for multi-tooth circulation |
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| TWI671481B true TWI671481B (en) | 2019-09-11 |
| TW202022262A TW202022262A (en) | 2020-06-16 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014115544A1 (en) * | 2013-01-25 | 2014-07-31 | 日本精工株式会社 | Ball screw device |
| TWM565255U (en) * | 2018-04-30 | 2018-08-11 | 上銀科技股份有限公司 | Cooling type ball screw |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014115544A1 (en) * | 2013-01-25 | 2014-07-31 | 日本精工株式会社 | Ball screw device |
| TWM565255U (en) * | 2018-04-30 | 2018-08-11 | 上銀科技股份有限公司 | Cooling type ball screw |
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