200949097 九、發明說明： 【發明所屬之技術領域】 本發明係為一種滾珠螺桿，尤指一種可降低衝擊力之 滾珠螺桿循環裝置。 【先前技術】 現今的滚珠螺桿於工業方面之應用愈來愈多，除了作 Φ 為線性進給傳動的高精密度效果之外，其他更有摩擦耗損 率小、能量轉換率高、噪音小及高剛度不易損壞等優點， 因此，滾珠螺桿對於現今各種工業應用機具等重要性也不 言可喻。 承上，由於要讓螺帽可無限次的在螺桿上往復運動， 就必須設有循環裝置使滾動體可無限次循環於滚動溝槽 ❹ 中，請參閱第一圖所示，為一種習知的循環裝置設計，該 循環裝置D所設之循環通道D1由直線路徑與單一彎曲 路徑所構成者（誠如第一圖所示該循環通道D 1之路徑係 由直線段A、轉彎處B、直線段A、轉彎處B、直線段A 所構成），此設計如因螺帽外徑較小時，相對該循環裝置 D之尺寸也較小，轉彎處B的迴流半徑也相對變小，當迴 流半徑變小時，滾動件對於轉彎處B的衝擊力道也相對提 5 200949097 升且衝擊處也較集巾，如長久使用下來可能造成轉f處B 的知壞。是以，該習知循環裝置D仍有待改良。 【發明内容】 基於上述習知循環裝置之問題點，本發明人經過研究 改良後’終有確能達成以下發明之目的之發明誕生。 © μ #’本發明首要目的在於’於循環裝置之彎曲段路徑 設有至少兩不同圓心之彎曲半徑，且該彎曲半徑之圓心係 位於同一侧。 為達上述之目的，本發明係為一種滚珠螺桿 一長軸，其外緣設有槽； · ⑩緣其設有—供該絲套設之穿孔，且該穿孔内 緣係叹有相對該螺紋槽之螺紋溝，並於 干定位孔，該定位孔係與該穿孔相連通；卜緣叹有右 若干滾動件’係設於該螺紋槽及螺紋溝之門· 接該各“部之一端， 接’該脚部係設於該螺帽之定位孔内，且該二 200949097 一循環通道，該循環通道係由兩直線段路徑、兩彎曲段路 徑及連接段路徑所組成’而各路徑具有一中心線且相互連 接，其依上述路徑棑列分別為兩直線段中心線、第一彎曲 中心線、第二彎曲中心線及連接段中心線，其中該第一彎 曲中心線及第二彎曲中心線皆為彎曲段路徑之中心線，而 該第一彎曲中心線之半徑係大於第二彎曲中心線之半 徑，使f曲段路㈣迴轉半徑提升，使段路徑更為平 ❹順，相對減少滾動件對於彎曲段路徑之衝擊力。 為了證明設有至少兩不同圓心之半徑所構成的 彎曲段路徑，具有降低滾動件衝擊變曲段路徑的功效，本 發明人藉由動態模擬軟體將R1(第一筆曲中心線之半徑） =R2(第一f曲中心線之半徑）的關係輸入程式中模擬結 ❹盤【表—】所示，如料可得知當R1等於R2時其衝 的平均值為1GG% ,而R1為R2的兩倍時其衝擊力的 為^為？3%，而RUR2的三倍時其衝擊力的平均值 而= 的四倍時其衝擊力的平均值為娜， 五倍時其衝擊力的平均值為跳’故由上 藉J至少兩不同圓心之彎曲半徑所構成的 力，:二=::::對於”段路徑的衝擊 用*命增加，且提升滾珠螺桿運行時 200949097 的順暢度。200949097 IX. Description of the Invention: [Technical Field] The present invention relates to a ball screw, and more particularly to a ball screw circulation device capable of reducing impact force. [Prior Art] Today's ball screws are used more and more in industry. In addition to the high precision effect of Φ for linear feed transmission, other friction loss rate is small, energy conversion rate is high, and noise is small. The high rigidity is not easy to damage, and therefore, the importance of the ball screw for various industrial applications and tools today is not to be understood. In order to allow the nut to reciprocate on the screw indefinitely, a circulation device must be provided to allow the rolling element to circulate indefinitely in the rolling groove ,, as shown in the first figure, Known circulation device design, the circulation channel D1 of the circulation device D is composed of a straight path and a single curved path (as shown in the first figure, the path of the circulation channel D 1 is from the straight line segment A, the turning point B , the straight line segment A, the turning portion B, and the straight line segment A), if the outer diameter of the nut is small, the size of the circulating device D is also small, and the reflow radius of the turning portion B is relatively small. When the reflow radius becomes smaller, the impact force of the rolling element for the turning point B is also relatively raised. 5200949097 liters and the impact is also better than the towel. If it is used for a long time, it may cause the b at the turning point. Therefore, the conventional circulation device D still needs to be improved. SUMMARY OF THE INVENTION Based on the above-mentioned problems of the conventional circulation device, the inventors of the present invention have been researched and improved, and the invention for the purpose of achieving the following invention has been born. © μ #' The primary object of the present invention is to provide a bending radius of at least two different centers of the curved section path of the circulation device, and the center of the bending radius is on the same side. For the purpose of the above, the present invention is a long axis of a ball screw, the outer edge of which is provided with a groove; the edge of the 10 is provided with a perforation for the wire, and the inner edge of the perforation is opposite to the thread a threaded groove of the groove, and a dry positioning hole, the positioning hole is connected with the perforation; the edge of the edge has a plurality of right rolling members 'stayed in the thread groove and the groove of the thread groove, and is connected to one end of each of the parts Connected to the positioning hole of the nut, and the two 200949097 a circulation channel, the circulation channel is composed of two straight segment paths, two curved segment paths and connecting segment paths, and each path has one The center line is connected to each other, and is arranged as a center line of the two straight segments, a first bending center line, a second bending center line, and a connecting segment center line according to the path, wherein the first bending center line and the second bending center line Both are the center line of the curved section path, and the radius of the first bending center line is larger than the radius of the second bending center line, so that the radius of rotation of the f curved section road (4) is increased, so that the section path is smoother and smoother, and the rolling is relatively reduced. Piece for curved section The impact force of the diameter. In order to prove that the curved section path formed by the radius of at least two different centers has the effect of reducing the path of the impact section of the rolling element, the inventor uses the dynamic simulation software to R1 (the first stroke center) The relationship between the radius of the line) = R2 (the radius of the center line of the first f-curve) is shown in the analog set disk [Table -] in the input program. If the R1 is equal to R2, the average value of the stroke is 1 GG%. When R1 is twice as large as R2, its impact force is ^3%, while RUR2 is three times its average impact force and four times its impact force, the average value of the impact force is Na, five times The average value of the impact force is the force of the jump, so the bending radius of at least two different centers of the core is taken up by: J =:::: For the impact of the segment path, the life is increased, and the ball screw is raised. The smoothness of 200949097.
本發明之衝擊力測試Impact test of the present invention
第一彎曲中心線之半徑(R1)與第二彎曲中心線之半徑(R2)之關係 【表一】 為求清楚說明本發明之實施特點，以下說明本發明較 習用進步之處及實用方式： 1. 本發明係可有效降低滚動件對於彎曲段路徑的衝擊 力，使滾動件的循環更為順暢，以提升滾珠螺桿之穩 定度。 2. 用於小規格之螺帽其效果更加顯著，因為可使循環裝 置之彎曲段的路徑更為平順，相對提升滾動件循環的 順暢度。 為了更進一部暸解本發明之特徵及技術内容，請參閱 8 200949097 、 · 以下有關本發明之實施方式說明及圖式，然而此實施方式 及圖式僅供說明及參考用，而非用以對本發明做任何限制 者0 【實施方式】 明參閱第二圖及第三圖所示，本發明係為一種滾珠 螺桿，係包含： 〇 一長軸2，其外緣設有一螺紋槽2 1 ; 一螺帽1，其設有一供該長軸2套設之穿孔i i，且 該穿孔1 1内緣係設有相對該螺紋槽2丄之螺紋溝（未顯 不）’並於該螺帽i外緣設有若干定位孔丄2，該定位孔 12係舆該穿孔11相連通； 若干滾動件4，係設於該螺紋槽2 螺紋溝之間； 循環裝置3，係裝設於該螺帽^上，該循環裝置3 要由兩mA、兩彎曲部3b及-連接部3C所構 成’該連接部3 C兩端係連接該各彎曲部3 B之一端，該 各弯曲部3 B另-端係與該各腳部3 A連接，該腳部3 a 係設於該螺帽1之定位孔1 2内，且該循環裝置3設有一 循環通道，該循環通道係由兩直線段路徑3工、兩變曲段 路徑3 2及連接段路徑3 3所組成，而各路徑具有一中心 線且相互連接，其依上述路徑排列分別為兩直線段中心線 9 200949097 3 1 1、第一彎曲中心線3 2 1、第二彎曲中心線3 2 2 及連接段中心線3 3 1 ’其中該第一彎曲中心線3 2 1及 第二彎曲中心線3 2 2皆為彎曲段路徑3 2之中心線，而 該第一彎曲中心線3 2 1之半徑R 1係大於第二彎曲中 心線3 2 2之半徑R 2 ’使彎曲段路徑3 2的迴轉半徑提 升，使彎曲段路徑3 2更為平順，相對減少滾動件對於彎 曲段路徑3 2之衝擊力。 〇 該循環裝置3所讓滚動件4運行的路徑依序為，直線 段路徑3 1—彎曲段路徑3 2 (包含：第一彎曲中心線3 2 1及第二彎曲中心線3 2 2)—連接段路徑3 3 —彎曲 段路徑3 2 (包含：第一彎曲中心線3 2 1及第二彎曲中 心線3 2 2 )—直線段路徑3 1 ;該連接段路徑3 3之兩 端係分別直接與間接銜接彎曲段路徑3 2及直線段路徑 ❹ 3 1 ’而此兩端的彎曲段路徑3 2及直線段路徑3 1之中 心線係不在同一平面上。 综所上述，本發明儀可有效降低滾動件對於彎曲段路 徑的衝擊力，使滾動件的循環更為順暢，以提升滾珠螺桿 之穩定度並延長其使用壽命，所以本發明之『具有產業之 可利用性』應已毋庸置疑，除此之外，在本案實施例所揭 200949097 露出的特徵技術，於申請之前並未曾見於諸刊物，亦未曾 被公開使用，不但具有如上所述功效增進之事實，更具有 不可輕忽的附加功效，是故，本發明的『新穎性』以及『進 步性』都已符合專利法規，爰依法提出發明專利之申請， 析請惠予審查並早日賜准專利，實感德便。 以上所述實施例之揭示係用以說明本發明，並非用以 © 限制本發明，故舉凡數值之變化與等效元件之置換，仍應 隸屬本發明之範_。 200949097 【圖式簡單說明】 第一圖為習知技術循環裝置示意圖。 第二圖為本發明滾珠螺桿分解圖。 第三圖為本發明循環裝置前視圖。 【主要元件符號說明】 (習知技術） D 循環裝置 D1 循環通道 A 直線段 B 彎曲處 (本發明） 1 螺帽 1 1 穿孔 1 2 定位孔 2 長軸 2 1 螺紋槽 3 循環裝置 3 A 腳部 3 1 直線段路徑 3 1 1 直線段中 心 線 3 2 彎曲段路徑 3 2 1 第一彎曲 中 心線 3 2 2 第二彎曲中心線 3 3 連接段路徑 3 3 1 連接段中 心 線 4 滾動件 12Relationship Between the Radius (R1) of the First Bending Center Line and the Radius (R2) of the Second Bending Center Line [Table 1] In order to clearly illustrate the implementation features of the present invention, the following describes the more advanced and practical ways of the present invention: 1. The invention can effectively reduce the impact force of the rolling element on the curved section path, and make the rolling of the rolling member smoother, so as to improve the stability of the ball screw. 2. For small-sized nuts, the effect is more remarkable, because the path of the curved section of the circulation device can be made smoother, and the smoothness of the rolling element circulation can be relatively improved. For a better understanding of the features and technical aspects of the present invention, please refer to the following description of the embodiments of the present invention and the drawings, but the embodiments and drawings are for illustrative purposes only and not for The invention is not limited to the following. [Embodiment] Referring to the second and third figures, the present invention is a ball screw comprising: a long shaft 2, the outer edge of which is provided with a thread groove 2 1; The nut 1 is provided with a through hole ii for the long shaft 2, and the inner edge of the through hole 1 1 is provided with a thread groove (not shown) opposite to the thread groove 2' and outside the nut i The rim is provided with a plurality of positioning holes 2, the positioning holes 12 are connected to the through holes 11; a plurality of rolling members 4 are disposed between the thread grooves of the thread groove 2; and the circulation device 3 is mounted on the nut ^ In the above, the circulation device 3 is composed of two mA, two curved portions 3b and a connecting portion 3C. The two ends of the connecting portions 3 C are connected to one ends of the curved portions 3 B, and the curved portions 3 B are further connected to each other. Connected to the respective leg portions 3 A, the leg portions 3 a are disposed in the positioning holes 1 2 of the nut 1 , and the The device 3 is provided with a circulation channel, which is composed of two straight segment path 3, two curved segment path 3 2 and a connecting segment path 3 3 , and each path has a center line and is connected to each other according to the above path The arrangement is respectively a two-line segment center line 9 200949097 3 1 1 , a first bending center line 3 2 1 , a second bending center line 3 2 2 and a connecting segment center line 3 3 1 'where the first bending center line 3 2 1 And the second bending center line 3 2 2 is the center line of the curved section path 3 2 , and the radius R 1 of the first bending center line 3 2 1 is greater than the radius R 2 ′ of the second bending center line 3 2 2 The radius of gyration of the curved section path 3 2 is increased to make the curved section path 3 2 smoother, and the impact force of the rolling member against the curved section path 3 2 is relatively reduced. The path of the circulation device 3 for the rolling element 4 to run is, in order, the straight segment path 3 1 - the curved segment path 3 2 (including: the first curved center line 3 2 1 and the second curved center line 3 2 2) - connecting section path 3 3 - bending section path 3 2 (including: first bending center line 3 2 1 and second bending center line 3 2 2 ) - straight section path 3 1 ; both ends of the connecting section path 3 3 The curved section path 3 2 and the straight section path ❹ 3 1 ' are directly and indirectly connected to each other, and the center line systems of the curved section path 3 2 and the straight section path 3 1 at both ends are not in the same plane. In view of the above, the instrument of the present invention can effectively reduce the impact force of the rolling member on the path of the curved section, and make the circulation of the rolling member smoother, thereby improving the stability of the ball screw and prolonging the service life thereof, so the invention has the industry There is no doubt that the usability can be exceeded. In addition, the feature technology revealed in the example of this case is not disclosed in the publications before the application, nor has it been used publicly, not only has the fact that the effect is enhanced as described above. Therefore, the "novelty" and "progressiveness" of the present invention have met the patent laws and regulations, and the application for invention patents has been filed according to law, and the application for review and early grant of patents is realized. Debian. The above description of the embodiments is intended to be illustrative of the invention, and is not intended to limit the scope of the invention. 200949097 [Simple description of the diagram] The first figure is a schematic diagram of a conventional technology circulation device. The second figure is an exploded view of the ball screw of the present invention. The third figure is a front view of the circulation device of the present invention. [Main component symbol description] (Prior art) D Circulator D1 Circulating channel A Straight line B Bending (Invention) 1 Nut 1 1 Perforation 1 2 Positioning hole 2 Long axis 2 1 Thread groove 3 Circulator 3 A foot Part 3 1 straight segment path 3 1 1 straight segment centerline 3 2 curved segment path 3 2 1 first curved centerline 3 2 2 second curved centerline 3 3 connecting segment path 3 3 1 connecting segment centerline 4 rolling element 12