201022555 六、發明說明： 【發明所屬之技街領域】 本發明與主要包含螺桿與螺帽的傳動裝置有關，特別0 指一種滚珠螺桿 【先前技術】 滚珠螺桿發展至今，由於擁有低摩擦與高精密的優點， 一直是各種產業在雜位移裝置上的首選，雖崎珠螺桿的 ®技術在發展上已到達成熟的階段 & 文17梁滾珠螺桿的各 月匕或數值最佳化，還待多方面的研究與開發； 目前的滾珠螺桿，其中一種如们圖所示的技術，是在 螺帽A的兩端分別設置一迴流端蓋b，各該迴流端蓋 :迴流道B1 ’該螺帽A具—軸向成型的通道A卜各該迴流 端蓋B的迴流道B1與該螺帽a的通道W連接，以一螺桿C 3'螺帽“，且在魏帽A的㈣紋A2#該螺桿c的 外螺紋C1間置入複數滚珠D，便能由各該迴流端蓋B的迴 流道β1及該螺帽A的通道A1讓等該滚珠D進行迴流； 此種滚珠螺捍的確是目前相當習知且通用的技術，但在 最佳化方面部有不足之處，原因在於該螺帽A的通道A1是 沿該螺帽A的紅二、 向成型，雖然是通過該螺帽A進行迴流最短 與最快的路彳⑨Λ 二但要將等該滾珠D由該螺帽Α的内螺紋Α2 與〆累杯〇的外螺紋C1迅速導入該螺帽Α的通道Α1内，各 201022555 該迴流端蓋B的迴流道βΐ必須具有很小的迴轉半徑，遂造 成等該滚珠D在通過該遒流道B1時，產生相當大的轉折， 讓專§亥滾珠D的滾動不順'^甚至可能因過大的轉折，而使 等該滚珠D撞擊該迴流瑞蓋B，反而會對各該迴流端蓋B造 成損傷’假使嚴重到必須更換各該迴流端蓋B的狀況，在滾 珠螺桿因維修而停用的時間内’將不知會對產能或工作造成 多大的延宕與影響； Α 根據效能最佳化的角度，便有人接著開發出如第2圖所 示的技術，是在該螺帽Α開設一個斜向通道A3，該斜向通 道A3與該螺帽A的軸向呈歪斜（歪斜，是指兩條線不論相 • 交與否，分別向兩個不同的方向延伸），以談斜向通道A3 取代原先開設的通道A1，且由該螺帽A的侧面徑向裝設二 迴流元件E，二該迴流元件E的迴流道E1與該螺帽A的斜 向通道A3連接，以二該迴流元件E取代原先使用的二談迴 .. .. ._ - ---- . . ........ ❹流端蓋B; 如此使等該滾珠D由該斜向通道A3通過該螺帽A進行 迴流，會增加等該滾珠D的滾動路徑，不過能使各該迴流元 件E的迴流道E1具有較大的迴轉半徑，而減少等該滾珠D 通過時的轉折，讓等該滾珠D的滚動更為順暢，如此的確能 解決前述滾珠螺桿中，滾珠在滾動過程中轉折過大的種種問 題’不過此種滾珠螺桿卻帶來另一個問題，等該滾珠D是由 徑向進入各該迴流元件E的迴流道E1，因此等該滾珠D對 201022555 各該迴流元件E會產生徑向的碰撞與震動，由於各該迴流元 件E也是由徑向外露地設置在該螺帽A，因此二該迴流元件 E必須完全吸收等該滾珠D造成的碰撞與震動，遂產生相當 大且難以被吸收的噪音，而震動也同時影響了滾珠螺捍的精 度’在追求高標準與高精密的工作環境便無法使用，限制了 此類滾珠螺桿的適用地點，另外二該迴流元件E由該螺帽A 的側面徑向裝設的技術，還會造成該螺帽A外徑大幅增加， 0使整體體積擴大的缺點； 前述可知，即使滾珠螺桿的技術已發展成熟，但在如何 使效能最佳化的部份仍是亟待開發，如前述第二種滾珠螺 桿’雖解決第一種滚珠螺桿的缺點，但也產生了另一方面的 問題’要如何同時解決前述的種種問題，以及讓滚珠螺桿的 效能最佳化，本創作人便以此為根據，開發出一種滾珠螺桿。 ❹ 【發明内容】 本發明目的在提供一種滾珠螺桿，是利用裝設在螺帽軸 向兩端的二迴流元件，導引在螺帽與螺桿間滚動的滾動件， 使滾動件通過成型於螺帽且與螺帽轴心呈歪斜的通道以進 行迴流，藉此減少噪音與朗，並讓滾動㈣滾動更_。 為達前述目的，該滾殊 流元件及複數滾動件，該螺 螺桿包含一螺桿、一螺帽、二迴 桿外緣具有滾動溝，該螺帽内緣 201022555 具滾動槽，該螺帽套在該螺桿外且該滾動槽與該滾動溝相對 組成一負荷流道，該螺帽又貫設有與軸心呈歪斜形態的通 道，二該迴流元件分別設置在該螺帽的兩端，且各該迴流元 件内具一迴流道，二該迴流元件的迴流道的一端分別與該螺 帽的通道的兩端連接，另一端與該負荷流道連接形成一循環 路徑，等該滾動件在該循環路徑内滾動； 藉由該蜾帽的通道與該螺帽的.軸心呈歪斜的設計，能增 加等該滾動件通過各該迴流元件的迴流道的迴轉半徑，讓等 該滾動件的滾動更為順暢，且避免等該滚動件滾動的轉折過 大而撞擊各該迴流元件的問題，另外二該迴流元件設置在該 ，螺帽兩端的設計，更能讓等該滾動件通過各該迴流元件時產 生的噪音與震動分散到該螺帽，而減少噪音與震動。 【實施方式】 本發明滾珠螺桿的實施例如第3至6圖所示，包含： φ 一螺桿10，外緣具有滚動溝11 ; 一螺帽20，具一軸向成型的穿孔21及一轴心20A，該 螺帽20以該穿孔21套設在該螺桿10外，該螺帽20内緣具 有滚動槽22，該螺帽20的滾動槽22與該螺桿10的滚動溝 11相對組成一負荷流道30,該螺帽20兩端面分別設有一組 設槽23,二該組設槽23間設有貫穿該螺帽20的一通道24, 該通道24的延伸方向24A與該螺帽20的軸心20A呈歪斜形 6 201022555 態（如前所述’歪斜是指兩條線不論相交與否，分別向兩個 不同的方向延伸’更精確地說’是指其中一條線向另一條線 所在的平面進行投影後，呈相交的狀態’如第6圖所示，界 定出該螺帽20的軸心20A位在一平面20B上’該通道24 的延伸方向24A投影至該平面20B成為投影線24B，該投影 線24B與該轴心20A相交，即代表該通道24的延伸方向24A 與該軸心20A呈歪斜形態）； I 二迴流元件40，分別軸向設置在該螺帽20的二該組設 ❹ 槽23 ’各該迴流元件40如第7圖所示，内具一迴流道41， 二該迴流元件40的迴流道41的一端分別與該螺帽20的通 . 道24的兩端連接’二該迴流元件4〇的迴流道41的另一端 分別與該負荷流道30連接，使二該迴流元件40的迴流道 41、該螺帽20的通道24及該負荷流道30構成一循環路徑 50 ;以及 ^ 複數滾動件60 ,容納在該循環路徑50内進行滚動。 由前述可知’該螺帽20供等該滾動件60循環使用的通 道24是與該螺帽2〇的軸心2〇A呈歪斜，因此能增加等該滾 動件60通過各該迴流元件40的迴流道41的迴轉半徑，讓 等該滚動件60的滾動更為順暢，能解決前述先前技術的敘 此中第種滾珠螺桿因各該迴流端蓋b的迴流道B1的迴 轉半徑過小，造成轉折過大而使等該滾珠D滾動不順暢的缺 201022555 點，更能避免先前技術的第一種滾珠螺桿中，等該滾珠D 滚動的轉折過大而撞擊各該迴流端蓋B的問題； 而二該迴流元件40軸向設置在該螺帽20兩端組設槽 23内的設計，使等該滾動件60通過各該迴流元件40時產 生的噪音與震動分散到該螺帽20,能解決前述先前技術的 敘述中，第二種滚珠螺桿因各該迴流元件E由徑向外露地設 置在該螺帽A，造成等該滾珠D通過各該迴流元件E產生噪 音與震動的問題，且二該迴流元件40由軸向設置在該螺帽 參 20的設計，還能解決先前技術的第二種滚珠螺桿由側面徑 向裝設二該迴流元件E，導致該螺帽A外徑增加的缺點； 可知本創的滚珠螺桿，確實能解決目前滾珠螺桿在最佳 化方面的問題，而能使整體品質得到更進一步的提升。 再者，該螺帽20的通道24内，還可設置一軟管25， @該軟管25的材質為塑膠或PVC等具撓性的軟材，當等該滚 動件60通過該軟管25進行迴流，還能利用該軟管25材質 的特性吸收等該滾動件60產生的噪音與震動，達到更佳的 靜音效果。 201022555 【圖式簡單說明】 第1圖習知滾珠螺桿迴轉半徑過小的示意圖。 第2圖 習知滾珠螺桿徑向設置迴流元件的示意圖。 第3圖本發明實施例的立體圖。 第4圖本發明實施例螺帽與迴流元件的分解圖。 第5圖本發明實施例的剖視圖。 第6圖本發明實施例轴心與通道的延伸方向呈歪斜 的示意圖。 第7圖本發明實施例迴流元件的立體圖。 第8圖本發明實施例裝設軟管的剖視圖。 第9圖本發明實施例滾動件通過軟管的示意圖。 【主要元件符號說明】 《習知》 通道Α1 斜向通道A3 迴流道Β1 外螺紋C1 迴流元件Ε 螺帽Λ 内螺紋Α2 迴流端蓋Β 螺桿C 滾珠D 迴流道Ε1 《本發明》 201022555 螺桿10 滾動溝11 螺帽20 轴心20A 平面20B 穿孔21 滾動槽22 組設槽23 通道24 延伸方向24A 軟管25 負荷流道30 迴流元件40 迴流道41 1 循環路徑50 〇 滚動件60 10201022555 VI. Description of the invention: [Technical street field to which the invention belongs] The present invention relates to a transmission device mainly comprising a screw and a nut, and particularly refers to a ball screw. [Prior Art] The ball screw has been developed to this day due to its low friction and high precision. The advantages of the industry have always been the first choice for miscellaneous displacement devices in various industries. Although the technology of the Kazuo screw has reached the stage of maturity in development, the monthly or numerical optimization of the ball screw of the 17-beam is still waiting for more. Research and development of the current; the current ball screw, one of the techniques shown in the figure, is provided with a reflow end cap b at each end of the nut A, and each of the reflow end caps: the return passage B1 'the nut A-axially-formed passage A. The return passage B1 of each of the return end caps B is connected to the passage W of the nut a, with a screw C 3 'nut ", and in the (four) grain A2 of the Wei Cap A The plurality of balls D are interposed between the external threads C1 of the screw c, and the ball D can be recirculated by the return passage β1 of the return end cover B and the passage A1 of the nut A; the ball screw is indeed Currently a fairly familiar and versatile technique, but There is a deficiency in the optimization aspect because the passage A1 of the nut A is formed along the red direction of the nut A, although the shortest and fastest path is performed by the nut A. However, the ball D is quickly introduced into the channel Α1 of the nut 由2 by the internal thread Α2 of the nut 〆 and the external thread C1 of the 〇 cup, and the return channel βΐ of the reflow cap B of each of the 201022555 must have a very large The small radius of gyration causes the ball D to make a considerable turn when passing through the choke B1, so that the rolling of the special ball D is not smooth, and may even cause the ball D due to an excessive turning. Colliding with the reflow cap B, it will cause damage to each of the reflow caps B. If the reflow cap B must be replaced, the ball screw will be incapable of being replaced during maintenance due to maintenance. Or how much delay and impact caused by the work; Α According to the performance optimization, someone then developed the technique shown in Figure 2, which is to open an oblique channel A3 in the nut, the diagonal channel A3 Skewed with the axial direction of the nut A (skewed, yes The two lines extend in two different directions regardless of whether they are intersected or not, to replace the originally opened channel A1 with the oblique channel A3, and the two reflow elements E are radially disposed from the side of the nut A, 2. The return path E1 of the reflow element E is connected to the oblique channel A3 of the nut A, and the reflow element E is replaced by the reflow element E, which is used for the second time. . . . . . . ..... turbulent end cap B; such that the ball D is recirculated by the oblique passage A3 through the nut A, which increases the rolling path of the ball D, but enables each of the reflow elements E The return passage E1 has a large radius of gyration, and reduces the turning of the ball D when it passes, so that the rolling of the ball D is smoother, so that the above-mentioned ball screw can be solved, and the ball turns excessively during the rolling process. There are various problems, but this kind of ball screw brings another problem. When the ball D is radially enters the return path E1 of each of the reflow elements E, the ball D will have a radial direction for each of the reflow elements E of 201022555. Collision and vibration, since each of the reflow elements E is also radially exposed Nut A, therefore, the reflow element E must completely absorb the collision and vibration caused by the ball D, and the noise generated is quite large and difficult to be absorbed, and the vibration also affects the accuracy of the ball screw' in pursuit of high standards. It can not be used with high-precision working environment, which limits the applicable location of such a ball screw. In addition, the reflow element E is radially mounted by the side of the nut A, and the outer diameter of the nut A is greatly increased. Increasing, 0 has the disadvantage of expanding the overall volume; As mentioned above, even if the technology of the ball screw has matured, the part that optimizes the performance is still urgently to be developed, as the second ball screw described above solves the first problem. The shortcomings of the ball screw, but also the problem of the other side 'how to solve the above problems at the same time, and optimize the performance of the ball screw, the creator used this to develop a ball screw. SUMMARY OF THE INVENTION The object of the present invention is to provide a ball screw which uses a two reflow element mounted on both axial ends of a nut to guide a rolling member that rolls between a nut and a screw, so that the rolling member is molded into the screw. The cap has a skewed passage with the nut axis for reflow, thereby reducing noise and lands, and allowing scrolling (four) to scroll more. For the above purpose, the rolling element and the plurality of rolling elements comprise a screw, a nut, and a second groove has a rolling groove at an outer edge thereof, and the inner edge of the nut 201022555 has a rolling groove, and the nut is sleeved The rolling groove and the rolling groove form a load flow path opposite to the rolling groove, and the nut further has a channel which is inclined with the axis, and the reflow elements are respectively disposed at two ends of the nut, and each The return element has a return flow path, and one end of the return flow path of the return flow element is respectively connected to both ends of the passage of the nut, and the other end is connected with the load flow path to form a circulation path, and the rolling element is in the cycle. Rolling in the path; by the design of the channel of the cap and the axis of the nut being skewed, the radius of gyration of the returning passage of the rolling member through each of the reflow elements can be increased, so that the rolling of the rolling member is more In order to be smooth, and to avoid the problem that the rolling element rolling is too large to hit each of the reflow elements, the other two reflow elements are disposed at the ends of the nut, so that the rolling elements can be passed through the reflow elements. Time Noise and vibration generated are distributed to the nut to reduce noise and vibration. [Embodiment] The embodiment of the ball screw of the present invention, as shown in Figs. 3 to 6, comprises: φ a screw 10 having a rolling groove 11 at the outer edge; a nut 20 having an axially formed perforation 21 and an axis The core 20A is sleeved with the through hole 21 outside the screw 10. The inner edge of the nut 20 has a rolling groove 22, and the rolling groove 22 of the nut 20 is opposite to the rolling groove 11 of the screw 10. a load channel 30, a pair of slots 23 are respectively disposed on the two ends of the nut 20, and a passage 24 extending through the nut 20 is disposed between the group of slots 23, and the extending direction 24A of the passage 24 and the nut 20 axis 20A is skewed 6 201022555 state (as mentioned above, 'skewing means that two lines extend in two different directions whether they intersect or not, 'more precisely' means one of the lines to the other After the plane in which the line is projected is projected, as shown in Fig. 6, the axis 20A of the nut 20 is defined on a plane 20B. The direction 24A of the passage 24 is projected to the plane 20B. a projection line 24B intersecting the axis 20A, that is, representing the extending direction 24A of the channel 24 and the axis 20A is in a skewed form); I two reflow elements 40 are respectively axially disposed on the two sets of the nut 20 of the nut 20'. The reflow element 40 is as shown in FIG. 7 and has a return path 41, One end of the return passage 41 of the reflow element 40 is respectively connected to both ends of the passage 24 of the nut 20, and the other end of the return passage 41 of the reflow element 4 is connected to the load flow passage 30, respectively. The return passage 41 of the reflow element 40, the passage 24 of the nut 20, and the load flow passage 30 constitute a circulation path 50; and a plurality of rolling members 60 are accommodated in the circulation path 50 for rolling. It can be seen from the foregoing that the passage 24 of the nut 20 for the circulation of the rolling member 60 is skewed with the axis 2A of the nut 2〇, so that the rolling member 60 can be increased by the respective reflow elements 40. The radius of gyration of the return passage 41 allows the rolling of the rolling member 60 to be smoother, and the first type of ball screw of the prior art described above is caused by the radius of gyration of the return passage B1 of each of the return end caps b being too small. If the turning is too large, the 201022555 point is not smooth, and the first ball screw of the prior art can be avoided, and the problem that the rolling of the rolling ball D is too large to hit each of the return end caps B; The reflow element 40 is axially disposed in the groove 23 at both ends of the nut 20, so that the noise and vibration generated when the rolling element 60 passes through the reflow elements 40 are dispersed to the nut 20, which can be solved. In the foregoing description of the prior art, the second type of ball screw is disposed on the nut A by the radially outwards of the reflow element E, causing the problem that the ball D generates noise and vibration through each of the reflow elements E, and The return element 40 is arranged axially The design of the nut cap 20 can also solve the disadvantage that the second type of ball screw of the prior art is provided with the reflow element E in the radial direction from the side, resulting in an increase in the outer diameter of the nut A. It can be seen that the ball screw of the present invention is indeed It can solve the problem of optimization of the current ball screw, and can further improve the overall quality. Furthermore, a hose 25 can be disposed in the passage 24 of the nut 20, and the hose 25 is made of a flexible soft material such as plastic or PVC, and the rolling member 60 is passed through the hose. When the reflow is performed, the noise and vibration generated by the rolling member 60 can be absorbed by the characteristics of the material of the hose 25 to achieve a better mute effect. 201022555 [Simple description of the drawing] Fig. 1 is a schematic view showing that the radius of gyration of the ball screw is too small. Fig. 2 is a schematic view showing a radial setting of a reflow element of a ball screw. Figure 3 is a perspective view of an embodiment of the invention. Figure 4 is an exploded view of the nut and reflow element of the embodiment of the present invention. Figure 5 is a cross-sectional view of an embodiment of the invention. Fig. 6 is a schematic view showing the direction in which the axis and the channel extend in a skewed manner in the embodiment of the present invention. Figure 7 is a perspective view of a reflow element of an embodiment of the invention. Figure 8 is a cross-sectional view showing a hose for mounting an embodiment of the present invention. Figure 9 is a schematic view of a rolling member passing through a hose in accordance with an embodiment of the present invention. [Main component symbol description] "Knowledge" Channel Α1 Oblique channel A3 Return channel Β1 External thread C1 Reflow element 螺 Nut Λ Internal thread Α 2 Reflow end cap 螺杆 Screw C Ball D Return channel Ε 1 "Invention" 201022555 Screw 10 Rolling Groove 11 Nut 20 Axis 20A Plane 20B Perforation 21 Rolling groove 22 Set groove 23 Channel 24 Extension direction 24A Hose 25 Load flow path 30 Reflow element 40 Return path 41 1 Cycle path 50 〇 Roller 60 10