TWM577078U - External circulating ball screw - Google Patents
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- TWM577078U TWM577078U TW107217387U TW107217387U TWM577078U TW M577078 U TWM577078 U TW M577078U TW 107217387 U TW107217387 U TW 107217387U TW 107217387 U TW107217387 U TW 107217387U TW M577078 U TWM577078 U TW M577078U
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Abstract
本新型是一種外循環滾珠螺桿，包含： 一螺桿；一螺帽，沿該螺桿軸線方向套設於該螺桿，並包含一設於該螺帽二端面之間的螺帽外端面、及二設在該螺帽外端面的管孔，各該管孔包含依序設置的第一圓弧、一第一直線、第二圓弧、第三圓弧、一第二直線、及第四圓弧，其中該第二直線較該第一直線靠近該螺帽端面，且該第二直線與該螺桿軸線的夾角為第一夾角，該第一夾角介於88度至92度之間；以及一迴流元件，固設在該螺帽外端面。藉此，得以縮短該螺帽的長度，達到降低成本、增加位移行程的目的。The utility model relates to an outer circulation ball screw, comprising: a screw; a nut sleeved on the screw shaft along the axis of the screw, and comprising an outer end surface of the nut disposed between the two end faces of the nut, and two screws a tube hole at an outer end surface of the nut, each of the tube holes includes a first arc, a first line, a second arc, a third arc, a second line, and a fourth arc, which are sequentially disposed, wherein The second line is closer to the end surface of the nut than the first line, and the angle between the second line and the axis of the screw is a first angle, the first angle is between 88 degrees and 92 degrees; and a reflow element is solid It is set on the outer end surface of the nut. Thereby, the length of the nut can be shortened, and the purpose of reducing the cost and increasing the displacement stroke can be achieved.
Description
本新型係與滾珠螺桿有關，特別是指一種外循環式之滾珠螺桿。The novel is related to a ball screw, in particular to an externally circulating ball screw.
一般滾珠螺桿的型式主要分為外循環式及內循環式。其中外循環滾珠螺桿能提供較為順暢之鋼珠迴流與對一般導程與及大直徑滾珠螺桿提供較佳的工作品質；而內循環滾珠螺桿的外徑較小、重量較輕，適用在內部空間較小的機器中。Generally, the types of ball screws are mainly classified into an outer circulation type and an inner circulation type. The outer circulation ball screw can provide smoother ball reflow and provide better working quality for general lead and large diameter ball screw; while the inner circulation ball screw has smaller outer diameter and lighter weight, which is suitable for internal space. Small machine.
參閱圖1所示，顯示日本專利(JP 20050083519A)的圖式，該專利文獻為一種外循環式的滾珠螺桿，其主要由螺桿(圖上未示)、套置在該螺桿的螺帽11、設在該螺桿與螺帽11之間的滾珠(圖上未示)、以及設在該螺帽且用以供滾珠迴流循環的迴流元件(圖上未示)所組成，雖然其藉由迴流元件的導引腳部長度與滾珠珠徑間的關係來提高順暢度，但是該螺帽11上所設計的管孔111型態，會造成螺帽11長度無法縮減，而凸顯出成本高、位移行程不足的缺陷，更進一步來說，管孔111具有一較靠近螺帽端面113的直線段112，直線段112的延伸線與螺帽端面113的夾角θ過大，也就是該管孔111設計過於歪斜，導致螺帽11在長度設計上必須考慮該管孔111的歪斜量以及管孔111與內部負荷路徑的連接情況，以避免產生破孔或強度不足的情事發生。Referring to Fig. 1, there is shown a drawing of a Japanese patent (JP 20050083519A) which is an outer circulation type ball screw mainly composed of a screw (not shown), a nut 11 which is fitted over the screw, a ball (not shown) disposed between the screw and the nut 11 and a reflow member (not shown) provided in the nut for recirculating the ball, although by a reflow element The relationship between the length of the lead portion and the ball diameter improves the smoothness, but the shape of the tube hole 111 designed on the nut 11 causes the length of the nut 11 to be reduced, and the cost is high and the displacement stroke is highlighted. Insufficient defects, further, the tube hole 111 has a straight line segment 112 closer to the end surface 113 of the nut, and the angle θ between the extension line of the straight line segment 112 and the end surface 113 of the nut is too large, that is, the tube hole 111 is designed to be too skewed. Therefore, the length of the nut 11 must be considered in the length design of the tube hole 111 and the connection between the tube hole 111 and the internal load path to avoid the occurrence of broken holes or insufficient strength.
另外，目前業界所生產的外循環滾珠螺桿無法符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸，除了因為具有上段所述的限制之外，其主要原因在於螺帽上管孔與鎖孔之間距離的設計，導致螺帽外徑尺寸過大，無法符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸。In addition, the outer circulation ball screw currently produced in the industry cannot meet the outer diameter of the nut specified by the European Industrial Standard (DIN), except for the limitation described in the above paragraph, the main reason is the hole and lock on the nut. The design of the distance between the holes results in an oversized outer diameter of the nut that does not meet the outer diameter of the nut as specified by the European Industry Standard (DIN).
本新型的目的係在於提供一種外循環滾珠螺桿，主要縮短螺帽長度，以降低成本、增加位移行程。The purpose of the present invention is to provide an outer-circulating ball screw that mainly shortens the length of the nut to reduce cost and increase displacement stroke.
本新型另一目的係在於提供一種外循環滾珠螺桿，主要可符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸。Another object of the present invention is to provide an outer-circulating ball screw that is primarily compliant with the outer diameter of a nut as specified by European Industrial Standards (DIN).
為達前述目的，本新型係一種外循環滾珠螺桿，包含：一螺桿，具有一螺桿軸線以及一繞該螺桿軸線螺旋設置於外部的外螺旋槽溝；一螺帽，沿該螺桿軸線方向套設於該螺桿，並包含二螺帽端面、一繞該螺桿軸線螺旋設置於內部的內螺旋槽溝、一設於該二螺帽端面之間的螺帽外端面、及二設在該螺帽外端面且與該內螺旋槽溝相通的管孔，其中該內螺旋槽溝與該外螺旋槽溝形成一容置複數滾珠的負荷路徑，各該管孔包含依序設置的第一圓弧、一第一直線、第二圓弧、第三圓弧、一第二直線、及第四圓弧，其中該第一直線連接該第二圓弧，且該第一直線的延伸通過該第一圓弧，該第二直線連接該第三、四圓弧之間，且該第二直線較該第一直線靠近該螺帽端面，且該第二直線與該螺桿軸線的夾角為第一夾角，該第一夾角介於88度至92度之間；以及一迴流元件，固設在該螺帽外端面，並具有一連接該負荷路徑兩端的迴流通道。In order to achieve the above object, the present invention is an outer-circulating ball screw comprising: a screw having a screw axis and an outer spiral groove spirally disposed around the screw axis; a nut disposed along the axis of the screw The screw includes an end surface of the second nut, an inner spiral groove spirally disposed inside the screw axis, an outer end surface of the nut disposed between the end faces of the two nuts, and two outer nuts disposed outside the nut a tube hole communicating with the inner spiral groove, wherein the inner spiral groove and the outer spiral groove form a load path for accommodating a plurality of balls, each of the tube holes including a first arc and a first arc a first straight line, a second circular arc, a third circular arc, a second straight line, and a fourth circular arc, wherein the first straight line is connected to the second circular arc, and the first straight line extends through the first circular arc, the first The second line is connected between the third and fourth arcs, and the second line is closer to the end surface of the nut than the first line, and the angle between the second line and the axis of the screw is a first angle, and the first angle is between Between 88 and 92 degrees; and a return element And fixed on the outer end surface of the nut and having a return passage connecting the two ends of the load path.
本新型之功效在於：藉由將該螺帽的管孔依序設計有第一圓弧、第一直線、第二圓弧、第三圓弧、第二直線、及第四圓弧，其中該第一直線連接該第二圓弧，且該第一直線的延伸通過該第一圓弧，該第二直線連接該第三、四圓弧之間，且該第二直線較該第一直線靠近該螺帽端面，同時該第二直線與該螺桿軸線的夾角為第一夾角，該第一夾角介於88度至92度之間，因此該第二直線得以與螺帽端面呈平行狀，也因此得以縮短該螺帽的長度，達到降低成本、增加位移行程的目的。The utility model has the following advantages: the first arc, the first straight line, the second circular arc, the third circular arc, the second straight line, and the fourth circular arc are sequentially designed by the tube hole of the nut, wherein the first a second arc is connected to the second arc, and the first straight line extends through the first arc, the second line is connected between the third and fourth arcs, and the second line is closer to the end of the nut than the first line At the same time, the angle between the second line and the axis of the screw is a first angle, and the first angle is between 88 degrees and 92 degrees, so that the second line is parallel with the end surface of the nut, thereby shortening the The length of the nut is used to reduce the cost and increase the displacement stroke.
較佳地，其中該第一夾角為90度。藉此使該螺帽長度更得以減縮，更能達到降低成本、增加位移行程的目的。Preferably, wherein the first angle is 90 degrees. Thereby, the length of the nut can be further reduced, and the purpose of reducing the cost and increasing the displacement stroke can be achieved.
較佳地，其中該第一直線不平行於該第二直線。該螺帽的內螺旋槽溝具有一導程角，該螺帽的第一直線與該螺桿軸線的夾角為第二夾角，該第二夾角為90度減掉該導程角。藉此，可提昇滾珠流動的順暢度。Preferably, wherein the first straight line is not parallel to the second straight line. The inner spiral groove of the nut has a lead angle, and the angle between the first straight line of the nut and the screw axis is a second angle, and the second angle is 90 degrees minus the lead angle. Thereby, the smoothness of the ball flow can be improved.
較佳地，其中該螺帽更具有對應該管孔數量且凹設在該螺帽外端面的鎖孔，該鎖孔位於該第一直線與該第二直線的延伸範圍內。藉此，當鎖孔的孔緣在前述的範圍內時，得以減縮該螺帽的長度，以降低成本、增加位移行程；反之則會造成螺帽長度過長，使成本增加、位移行程縮短。Preferably, the nut further has a locking hole corresponding to the number of the tube holes and recessed on the outer end surface of the nut, the locking hole being located within the extending range of the first straight line and the second straight line. Thereby, when the hole edge of the keyhole is within the foregoing range, the length of the nut can be reduced to reduce the cost and increase the displacement stroke; otherwise, the length of the nut is too long, so that the cost is increased and the displacement stroke is shortened.
較佳地，其中各該鎖孔具有一鎖孔中心，該螺帽更具有一連接該第二、三圓弧之間的第一連線，該鎖孔中心至該第一連線的垂直距離為該滾珠珠徑的1至1.5倍。藉此，當該鎖孔中心至該第一連線的垂直距離為該滾珠珠徑的1至1.5倍時，螺帽外徑尺寸較小，而得以符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸；反之當該鎖孔中心至該第一連線的垂直距離為該滾珠珠徑的1.5倍以上時，造成該鎖孔與該管孔距離過遠，螺絲會凸出於迴流元件，使得螺帽直徑必須加大，進而無法適用歐洲工業標準(DIN)所規範的螺帽外徑尺寸；當該鎖孔中心至該第一連線的垂直距離為該滾珠珠徑的1倍以下時，造成該鎖孔與該管孔距離過近，造成螺帽的厚度過薄，造成螺絲鎖固力不足。Preferably, each of the locking holes has a locking hole center, and the nut further has a first connecting line connecting the second and third circular arcs, and a vertical distance from the center of the locking hole to the first connecting line It is 1 to 1.5 times the diameter of the ball. Thereby, when the vertical distance from the center of the keyhole to the first wire is 1 to 1.5 times of the ball diameter of the ball, the outer diameter of the nut is small, and the screw conforms to the European Industrial Standard (DIN) specification. The outer diameter of the cap; otherwise, when the vertical distance from the center of the keyhole to the first wire is more than 1.5 times the diameter of the ball, the distance between the keyhole and the pipe hole is too far, and the screw protrudes from the reflow element. Therefore, the diameter of the nut must be increased, so that the outer diameter of the nut specified by the European Industry Standard (DIN) cannot be applied; when the center of the keyhole is perpendicular to the first line, the ball is less than 1 times the diameter of the ball. When the locking hole is too close to the tube hole, the thickness of the nut is too thin, resulting in insufficient screw locking force.
較佳地，其中該第一連線為該滾珠珠徑的1.1至1.4倍。藉此，可提昇滾珠流動的順暢度並避免管孔過大造成螺帽長度過長，以及管孔過小造成滾珠變形以及滾珠流動順暢度不佳。Preferably, wherein the first connection is 1.1 to 1.4 times the diameter of the ball. Thereby, the smoothness of the ball flow can be improved and the length of the nut can be prevented from being too long, and the tube hole is too small to cause ball deformation and the ball flow is not smooth.
請參閱圖2至圖6所示，本創作實施例所提供一種外循環滾珠螺桿，其主要是由一螺桿20、一螺帽30、二導引件40與一迴流元件50所組成，其中：Referring to FIG. 2 to FIG. 6 , the present embodiment provides an outer-circulating ball screw, which is mainly composed of a screw 20 , a nut 30 , two guiding members 40 and a reflow element 50 , wherein:
該螺桿20，具有一螺桿軸線21以及一繞該螺桿軸線21螺旋設置於外部的外螺旋槽溝22。The screw 20 has a screw axis 21 and an outer spiral groove 22 spirally disposed around the screw axis 21.
該螺帽30，沿該螺桿軸線21方向套設於該螺桿20，並包含二螺帽端面31、一繞該螺桿軸線21螺旋設置於內部的內螺旋槽溝32、一設於該二螺帽端面31之間的螺帽外端面33、及二設在該螺帽外端面33且與該內螺旋槽溝32相通的管孔34，其中該內螺旋槽溝32與該外螺旋槽溝22形成一容置複數滾珠91的負荷路徑；The nut 30 is sleeved on the screw 20 in the direction of the screw axis 21, and includes a second nut end surface 31, an inner spiral groove 32 spirally disposed inside the screw axis 21, and a nut disposed on the screw nut 30. An outer end surface 33 of the nut between the end faces 31 and two tube holes 34 disposed on the outer end surface 33 of the nut and communicating with the inner spiral groove 32, wherein the inner spiral groove 32 and the outer spiral groove 22 are formed a load path for accommodating the plurality of balls 91;
各該管孔34包含依序設置的第一圓弧341、第一直線342、第二圓弧343、第一連線344、第三圓弧345、第二直線346、第四圓弧347、及第二連線348；其中該第一直線342連接該第二圓弧343，且該第一直線342的延伸通過該第一圓弧341，該第一連線344連接該第二、三圓弧343、345之間，該第二直線346連接該第三、四圓弧345、347之間，該第二連線348連接該第四、一圓弧347、341之間；值得說明的是，前述所稱連接是指各該直線或連線連接在所對應的圓弧之端點而言；其中該第二直線346較該第一直線342靠近該螺帽端面31，且該第二直線346與該螺桿軸線21的夾角為第一夾角θ1，該第一夾角θ1為90度，但不以此為限，該第一角度θ1介於88度至92度之間皆可，也就是該第一角度θ1最佳為90度，而於實際情形可保有正負2度的加工公差；Each of the tube holes 34 includes a first circular arc 341, a first straight line 342, a second circular arc 343, a first connecting line 344, a third circular arc 345, a second straight line 346, a fourth circular arc 347, and a second line 348; the first line 342 is connected to the second arc 343, and the first line 342 extends through the first arc 341, and the first line 344 is connected to the second and third arcs 343. Between 345, the second line 346 is connected between the third and fourth arcs 345, 347, and the second line 348 is connected between the fourth and an arcs 347, 341; it is worth noting that the foregoing The connection means that the straight line or the connection is connected to the end point of the corresponding arc; wherein the second line 346 is closer to the nut end 31 than the first line 342, and the second line 346 and the screw The angle of the axis 21 is the first angle θ1, and the first angle θ1 is 90 degrees, but not limited thereto, the first angle θ1 is between 88 degrees and 92 degrees, that is, the first angle θ1 The optimum is 90 degrees, and the machining tolerance of plus or minus 2 degrees can be maintained in the actual situation;
另外，本實施例中，該第一直線342不平行於該第二直線346，同時該螺帽30的內螺旋槽溝32具有一導程角θ2，該螺帽30的第一直線342與該螺桿軸線21的夾角為第二夾角θ3，該第二夾角θ3為90度減掉該導程角θ2。In addition, in the embodiment, the first straight line 342 is not parallel to the second straight line 346, and the inner spiral groove 32 of the nut 30 has a lead angle θ2, and the first straight line 342 of the nut 30 and the screw axis The angle of 21 is the second angle θ3, and the second angle θ3 is 90 degrees minus the lead angle θ2.
再者，本實施例中，該螺帽30更具有對應該管孔34數量且凹設在該螺帽外端面33的鎖孔35，該鎖孔35位於該第一直線342與該第二直線346的延伸範圍內，同時各該鎖孔35具有一鎖孔中心351，該螺帽30更具有一連接該第二、三圓弧343、345之間的第一連線344，該鎖孔中心351至該第一連線344的垂直距離L1為該滾珠91珠徑的1至1.5倍；另外該第一連線344為該滾珠91珠徑的1.1至1.4倍。Furthermore, in the embodiment, the nut 30 further has a locking hole 35 corresponding to the number of the tube holes 34 and recessed on the outer end surface 33 of the nut. The locking hole 35 is located at the first straight line 342 and the second straight line 346. In the extended range, each of the locking holes 35 has a locking hole center 351, and the nut 30 further has a first connecting line 344 connecting the second and third arcs 343, 345. The locking hole center 351 The vertical distance L1 to the first connection 344 is 1 to 1.5 times the diameter of the ball 91; and the first connection 344 is 1.1 to 1.4 times the diameter of the ball 91.
該二導引件40，各具有一對應該鎖孔35的鎖固部41及一連接該鎖固部41且置於該管孔34與該負荷路徑的導引部42，用以將滾珠91導引出或導引入螺帽30。The two guiding members 40 each have a pair of locking portions 41 corresponding to the locking holes 35 and a guiding portion 42 connected to the locking portion 41 and disposed in the tube hole 34 and the load path for the ball 91 The nut 30 is guided or guided.
該迴流元件50，固設在該螺帽外端面33，並具有一連接該負荷路徑兩端的迴流通道51；本實施例中利用螺絲92穿置過該迴流元件50、各該導引件40的鎖固部41而鎖固在螺帽30的鎖孔35，使該迴流元件50、導引件40、及螺帽30鎖固成為一體。The reflow element 50 is fixed to the outer end surface 33 of the nut and has a return passage 51 connected to both ends of the load path. In this embodiment, the reflow element 50 and the guide member 40 are inserted through the screw 92. The locking portion 41 is locked to the locking hole 35 of the nut 30 to lock the reflow member 50, the guide member 40, and the nut 30 into one body.
以上所述即為本創作實施例各主要構件的組態說明。至於本創作的作動方式與功效作以下說明。The above description is the configuration description of each main component of the creation embodiment. As for the mode of operation and efficacy of this creation, the following description is given.
其一、縮短螺帽長度，以降低成本、增加位移行程。由於本創作將該螺帽30的管孔34依序設計有第一圓弧341、第一直線342、第二圓弧343、第一連線344、第三圓弧345、第二直線346、第四圓弧347、及第二連線348，其中該第一直線342連接該第二圓弧343，且該第一直線342的延伸通過該第一圓弧341，該第二直線346連接該第三、四圓弧345、347之間，且該第二直線346較該第一直線342靠近該螺帽端面31，同時該第二直線346與該螺桿軸線21的夾角為90度的第一夾角θ1，因此該第二直線346得以與螺帽端面31呈平行狀，使得該螺帽端面31與該管孔34的第二直線346之間的距離可控制在最小距離，也因此得以縮短該螺帽30的長度，達到降低成本、增加位移行程的目的。First, shorten the length of the nut to reduce cost and increase displacement stroke. Since the tube hole 34 of the nut 30 is sequentially designed with a first circular arc 341, a first straight line 342, a second circular arc 343, a first connecting line 344, a third circular arc 345, and a second straight line 346, a fourth arc 347 and a second connecting line 348, wherein the first straight line 342 is connected to the second circular arc 343, and the first straight line 342 extends through the first circular arc 341, and the second straight line 346 is connected to the third Between the four arcs 345 and 347, the second line 346 is closer to the nut end surface 31 than the first line 342, and the angle between the second line 346 and the screw axis 21 is a first angle θ1 of 90 degrees. The second straight line 346 is parallel with the nut end surface 31 such that the distance between the nut end surface 31 and the second straight line 346 of the tube hole 34 can be controlled to a minimum distance, thereby shortening the nut 30 Length, to achieve the purpose of reducing costs and increasing the displacement stroke.
另外，將該螺帽30的鎖孔34設計位在該第一直線342與該第二直線346的延伸範圍內，避免該鎖孔34較該第二直線346更靠近該螺帽端面31，因此同樣得以減縮該螺帽30的長度，達到降低成本、增加位移行程的目的。In addition, the locking hole 34 of the nut 30 is designed to be within the extending range of the first straight line 342 and the second straight line 346, so that the locking hole 34 is prevented from being closer to the nut end surface 31 than the second straight line 346, and thus The length of the nut 30 can be reduced to achieve the purpose of reducing cost and increasing displacement stroke.
其二、降低螺帽外徑尺寸，以符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸。由於本創作將該螺帽30之鎖孔35的鎖孔中心351至該第一連線344的垂直距離L1設計在該滾珠91珠徑的1至1.5倍之間，因此，當該鎖孔中心351至該第一連線344的垂直距離L1為該滾珠91珠徑的1至1.5倍時，螺帽30外徑尺寸較小，而得以符合歐洲工業標準(DIN)所規範的螺帽外徑尺寸；反之當該鎖孔中心351至該第一連線344的垂直距離L1為該滾珠91珠徑的1.5倍以上時，造成該鎖孔35與該管孔34距離過遠，92螺絲會凸出於迴流元件50，使得螺帽30直徑必須加大，進而無法適用歐洲工業標準(DIN)所規範的螺帽外徑尺寸；當該鎖孔中心351至該第一連線344的垂直距離L1為該滾珠91珠徑的1倍以下時，造成該鎖孔35與該管孔34距離過近，造成螺帽30的厚度過薄，造成螺絲92鎖固力不足。Second, reduce the outer diameter of the nut to meet the outer diameter of the nut specified in European Industrial Standards (DIN). Since the present invention designs the vertical distance L1 of the keyhole center 351 of the lock hole 35 of the nut 30 to the first wire 344 between 1 and 1.5 times the bead diameter of the ball 91, when the center of the keyhole is When the vertical distance L1 of the first connection 344 to the first connection line 344 is 1 to 1.5 times the diameter of the ball 91, the outer diameter of the nut 30 is small, and the outer diameter of the nut conforms to the European Industrial Standard (DIN). Dimensions; otherwise, when the vertical distance L1 of the keyhole center 351 to the first connection line 344 is more than 1.5 times the bead diameter of the ball 91, the locking hole 35 is too far from the tube hole 34, and the 92 screw will be convex. Due to the reflow element 50, the diameter of the nut 30 must be increased, so that the outer diameter of the nut specified by the European Industry Standard (DIN) cannot be applied; when the vertical distance L1 of the keyhole center 351 to the first connection 344 is L1 When the diameter of the ball 91 is less than one time, the locking hole 35 is too close to the tube hole 34, and the thickness of the nut 30 is too thin, resulting in insufficient locking force of the screw 92.
其三、提昇滾珠流動的順暢度。由於本創作將該螺帽30之管孔34的第一直線342設計成不平行於該第二直線346，同時令第一直線342與該螺桿軸線21的第二夾角為90度減掉該螺帽30的導程角θ2，因此，可提昇滾珠91流動的順暢度(請發明人確認)。另外，更將該管孔34的第一連線344設計為該滾珠91珠徑的1.1至1.4倍，因此同樣可提昇滾珠91流動的順暢度，以避免管孔34過大造成螺帽30長度過長、管孔34過小造滾珠91變形以及滾珠91流動順暢度不佳。Third, improve the smoothness of the ball flow. Since the first line 342 of the tube hole 34 of the nut 30 is designed to be non-parallel to the second line 346, the second angle 342 of the first line 342 and the screw axis 21 is 90 degrees minus the nut 30. The lead angle θ2, therefore, can improve the smoothness of the flow of the ball 91 (please confirm by the inventor). In addition, the first connecting line 344 of the tube hole 34 is designed to be 1.1 to 1.4 times the diameter of the ball 91, so that the smoothness of the flow of the ball 91 can be improved to avoid the tube hole 34 being too large to cause the length of the nut 30 to pass. The length of the tube hole 34 is too small for the deformation of the ball 91 and the smooth flow of the ball 91 is not good.
[先前技術][Prior technology]
11‧‧‧螺帽 11‧‧‧ Nuts
111‧‧‧管孔 111‧‧‧ tube hole
112‧‧‧直線段 112‧‧‧ straight segments
113‧‧‧螺帽端面 113‧‧‧ nut end face
θ‧‧‧夾角 Θ‧‧‧ angle
[本創作] [This creation]
20‧‧‧螺桿 20‧‧‧ screw
21‧‧‧螺桿軸線 21‧‧‧ screw axis
22‧‧‧外螺旋槽溝 22‧‧‧External spiral groove
30‧‧‧螺帽 30‧‧‧ Nuts
31‧‧‧螺帽端面 31‧‧‧ nut end face
32‧‧‧內螺旋槽溝 32‧‧‧inner spiral groove
33‧‧‧螺帽外端面 33‧‧‧ outer end face of the nut
34‧‧‧管孔 34‧‧‧ tube hole
341‧‧‧第一圓弧 341‧‧‧First arc
342‧‧‧第一直線 342‧‧‧First straight line
343‧‧‧第二圓弧 343‧‧‧second arc
344‧‧‧第一連線 344‧‧‧First connection
345‧‧‧第三圓弧 345‧‧‧the third arc
346‧‧‧第二直線 346‧‧‧Second straight line
347‧‧‧第四圓弧 347‧‧‧ fourth arc
348‧‧‧第二連線 348‧‧‧Second connection
35‧‧‧鎖孔 35‧‧‧Keyhole
351‧‧‧鎖孔中心 351‧‧‧Keyhole Center
40‧‧‧導引件 40‧‧‧Guide
41‧‧‧鎖固部 41‧‧‧Locking
42‧‧‧導引部 42‧‧‧Guidance
50‧‧‧迴流元件 50‧‧‧Reflux components
51‧‧‧迴流通道 51‧‧‧Return channel
91‧‧‧滾珠 91‧‧‧ balls
92‧‧‧螺絲 92‧‧‧ screws
θ1‧‧‧第一夾角 Θ1‧‧‧ first angle
θ2‧‧‧導程角 Θ2‧‧‧ lead angle
θ3‧‧‧第二夾角 Θ3‧‧‧second angle
L1‧‧‧垂直距離 L1‧‧‧ vertical distance
圖1是日本專利JP 20050083519A的其中一圖式； 圖2是本創作實施例的立體分解圖； 圖3是本創作實施例的立體組合圖； 圖4是本創作實施例的上視圖，顯示螺帽的上視狀態； 圖5是本創作實施例的局部放大圖，顯示螺帽之管孔的放大狀態；以及 圖6是本創作實施例的剖面圖，顯示圖3線段6-6的剖面狀態。1 is a schematic view of a Japanese Patent No. 20050083519A; FIG. 2 is an exploded perspective view of the present embodiment; FIG. 3 is a perspective view of the present embodiment; Figure 5 is a partially enlarged view of the present embodiment, showing an enlarged state of the tube hole of the nut; and Figure 6 is a cross-sectional view of the present embodiment showing the section state of the line 6-6 of Figure 3. .
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107217387U TWM577078U (en) | 2018-12-21 | 2018-12-21 | External circulating ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107217387U TWM577078U (en) | 2018-12-21 | 2018-12-21 | External circulating ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM577078U true TWM577078U (en) | 2019-04-21 |
Family
ID=66997266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107217387U TWM577078U (en) | 2018-12-21 | 2018-12-21 | External circulating ball screw |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM577078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI773509B (en) * | 2021-09-02 | 2022-08-01 | 上銀科技股份有限公司 | Outer circulating ball screw |
-
2018
- 2018-12-21 TW TW107217387U patent/TWM577078U/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI773509B (en) * | 2021-09-02 | 2022-08-01 | 上銀科技股份有限公司 | Outer circulating ball screw |
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