200909712 九、發明說明： 【發明所屬之技術領域】 、匕本發_提供—種減少滾珠螺桿磨耗之結構，在此 、私可將滾珠螺桿中潤滑油(脂)所殘留磨屑吸附至油 溝之技術。 【先前技術】 螺桿傳動結構係一種利用螺桿及螺帽做共Μ動，以 運動傳遞之目的，現今以滾珠中介於螺桿及螺帽 之滾珠螺桿係效率及精密度最佳的傳動結構，可是在傳動 的過程中-定會產生磨屬，進而會影響到傳動之精密度以 及運作順暢性，所以滾珠螺桿均有之使用壽命。 θ因為滾珠螺桿作旋轉運動時，滾珠與螺帽U珠與螺 才于之表面峰端因滾動接觸發生黏附磨耗（㈣以丨代） 或因滑動接觸發生犁割磨耗（pl〇wing咖），而磨耗所產 t的磨屑會殘留在潤滑油（脂）中。磨相來源為滾珠、螺 帽或螺桿’因此磨屬的硬度與滾珠、螺帽及螺桿的硬度接 近’大約為58〜62HRC。滾珠螺桿繼續作旋轉運動時，磨屬 殘留在潤滑油㈤中並且被滾珠所帶動，#磨屑再度進入 滚珠與螺帽或滾珠與螺桿之接觸介面時，因為兩介面之間 的相對運動而發生磨粒磨耗（abrasive咖），將降低滾 珠螺桿精度及壽命。 有鐘於此，本發明人乃以多年的專業經驗與心得，經 200909712 用以改善上述之技術 不斷構思、創研，乃研發出本發明 問題點。 【發明内容】 本發明係提供—種減少滾珠螺桿磨耗之結構，其内容 在於：螺帽㈣紋及螺桿螺紋溝底端形成有專供導引潤滑 油流動之油溝，螺帽安裝有供磁單元，該供磁單元的安裳 位置是與螺帽内油溝相對應，使油溝相應的產生磁吸力: 如此，油溝便能吸_滑油中之磨屑，使其不再流動，令 滾珠不能接觸到該已被吸附於油溝中之料，因此該磨^ 便不再對《或螺桿產生雜，令本發明足以為滾珠螺桿 提出-有效維持精度及延長使用壽命之新穎技術。 為使貴審查委員能進一步瞭解本發明之結構，特徵 及其他目的以較佳實施例之圖式詳細說明如后：f 【實施方式】 σ 請參閱圖一及二所示，本發明包括有： 螺紋溝（1 1 )， 滑油流動之油溝 一螺桿（1 0 )’其外徑具有螺旋狀之 該螺紋溝（11)底端形成有專供導引潤 (12)； 一螺帽（2 0 )，係具有一可供螺桿（丄〇 )穿入之 内孔，該内孔中設有與螺桿（i 〇)螺紋溝（丄丄）相董 應之内螺紋（2 1 )’該内螺紋（2 底端則形成有| 200909712 供導制滑油流動之油溝（22)，而螺帽（20)外周 在相對油溝（2 2)的位置凹設有至少一個沉孔（2 3 ), (2 3 )升^狀可成幾何變化，其可為圓形、橢圓形、 方形、多邊形或不規則形等等； 複數之〆袞珠（3 〇 )’係保持於前述螺桿（1 〇 )之 螺’”文溝（1 1 )及螺帽（2 〇 )之内螺紋（2 1 )間，使 螺( 2 0)和螺桿（i 〇)間可被相互轉動，且該等滾 珠（3 〇)與上述螺桿（1 〇)及螺帽（2 0)之油溝（工 2 )(2 2)底端維持有一裕度；以及 供磁單元，係直接採用永久磁鐵（4丄），其形狀與 〉儿孔（2 3 )形狀相當、高度較沉孔（2 3 )深度小，俾 使4永久磁鐵（4 1)能完全埋設的固定於沉孔（2 3) 中’使-個沉孔（2 3)搭配一個永久磁鐵（4工）的配 置’而不外露於螺帽（2 〇)表面，令該永久磁鐵（4工） 使螺帽（20)油溝（22)底端相應的產生相當之磁吸 力’如此’油溝（2 2)底端便能層層疊接的吸附潤滑油 中之磨屬（5 0 )’使磨屑（5 Q )不再流動，且油溝（2 2)底端與滾珠（3 Q)維持有裕度，所以滾珠（3 〇)不會接觸到該已被吸附於油溝（2 2)中之磨屑（5 〇 )’因此該磨屑（5 0 )便不再對螺帽（2 〇 )或螺桿 (1 0 )產生磨粒磨耗，俾能有效的維持滾珠螺桿精度以 200909712 及延長其整體使用壽命。 料閱第三、四及五圖所示之第二實施例，其包括： ▲ 一螺桿（1 0)，其外徑具有螺旋狀之螺紋溝（1 该螺紋溝（1 1 )底端形成 (1 2); ㈣礼W潤滑油流動之油溝 螺中目（2 ◦)，係具有—可供螺桿（1 〇 )穿入之 内孔，該内孔中設有與螺桿（1Q)螺紋溝（ΐι) 應之内螺紋（川，該内螺紋（21)底端則形成有專 供導引潤滑油流動之油溝（2 2)，而螺帽（2〇)外周 沿軸向的凹設有至少一個鍵槽（2 4 ); 複數之滾珠（3 0 )，係保持於前述螺桿（1 〇 )之 螺紋溝（1 1 )及螺帽（2 〇)之内螺紋（2丄）間，使 螺帽（2 0)和螺桿（丄〇)間可被相互轉動，且該等滾 珠（3 0)與上述螺桿（1 〇)及螺帽（2 0)之油溝（！ 2)(2 2)底端維持有一裕度；以及 供磁單元’係由永久磁鐵（4工）及鍵（4 2)所組 成，該鍵（4 2)係對應的固設於螺帽（2 〇)之鍵槽（2 4)中，而鍵（4 2)外周在相對油溝（2 2)的位置凹 5又有至少一個未貫穿之組裝孔（4 3 )，使永久磁鐵（4 1 )能埋設的固定於組裝孔（4 3 )中，令該永久磁鐵（4 1)使螺帽（2 〇)油溝（2 2)底端相應的產生相當之 200909712 一一 磁吸力’如此便能達成與圖一及二相同之預期功能，此 實施例在於說明本發明只要在螺帽（2 〇)設有可將潤滑 油中殘留磨屑（5 0)吸附於該油溝（2 2 )之供磁單元， 藉由該磁吸之方式使磨屑積存於油溝（2 2)中不再流 動，據以降低磨屑對滾珠螺桿所產生的磨粒磨耗，即屬本 發明。 綜上所述’本發明確能有效的維持滾珠螺桿精度以及 延長其整體使料命，深具有產之利祕及進步性， 其在同類產品中均未見有類似之產品或發表而具有新颖 生疋技術理念上的高度發明，應符發明專利申請要 件’爰依法提$巾請。㈣±所述者，僅為本㈣之一較 心^實施例而已’當不能夕PP a 4* jv 田不此以之限疋本發明實施之範圍，即大 凡依本發明巾請專利範圍所作之 屬本發明涵蓋之範_。 一 ’ f應仍 200909712 r 【圖式簡單說明】 圖一係本發明螺帽及供磁單元之分解示咅回 圖二係本發明各元件於組合後之剖视圖。圖 圖三係本發㈣二實_螺帽及供㈣元 圖四係本發明第二實施例 0 仏磁早兀之組合外觀示意 圖【=本發m例各獅以 要7Μ牛符號說明】 丨硯圖。 1 〇 )螺桿 1 2 )油溝 2 0 )螺帽 2 2 )油溝 2 4 )鍵槽 3 〇 )滾珠 41)永久磁鐵 4 3)組骏孔 (21 螺紋溝 内螺紋 沉孔 4 )鍵200909712 IX. Description of the invention: [Technical field to which the invention belongs] 匕本发_ Provided a structure for reducing the wear of the ball screw. Here, the residual grinding oil of the lubricating oil (fat) in the ball screw can be adsorbed to the oil groove. Technology. [Prior Art] The screw drive structure is a kind of transmission structure for the purpose of motion transmission by using a screw and a nut. Nowadays, the ball screw system with the screw and the nut in the ball has the best transmission efficiency and precision. During the transmission process, the grinding will be generated, which will affect the precision of the transmission and the smooth operation. Therefore, the ball screw has a service life. θBecause of the rotation of the ball screw, the ball and the nut U-bead and the screw are adhered to the peak end of the surface due to the rolling contact ((4)), or the ploughing wear occurs due to the sliding contact. The wear debris produced by the wear will remain in the lubricating oil (fat). The source of the grinding phase is a ball, a nut or a screw. Therefore, the hardness of the abrasive is close to the hardness of the ball, the nut and the screw, which is about 58 to 62 HRC. When the ball screw continues to rotate, the grinding remains in the lubricating oil (5) and is driven by the ball. When the grinding debris enters the contact interface between the ball and the nut or the ball and the screw again, it occurs due to the relative movement between the two interfaces. Abrasive wear will reduce the accuracy and life of the ball screw. In view of this, the present inventors have developed the problems of the present invention by using the professional experience and experience of many years, and using 200909712 to improve the above-mentioned technologies, and to continuously conceive and innovate. SUMMARY OF THE INVENTION The present invention provides a structure for reducing ball screw wear, which is characterized in that: a nut (four) pattern and a screw thread groove bottom end are formed with an oil groove for guiding the flow of lubricating oil, and the nut is mounted with a magnetic supply. The unit, the position of the magnetizing unit is corresponding to the oil groove in the nut, so that the oil groove correspondingly generates magnetic attraction: Thus, the oil groove can absorb the grinding debris in the oil, so that it no longer flows, The ball is incapable of contacting the material that has been adsorbed in the oil sump, so that the grinding machine no longer produces "or the screw, making the invention sufficient for the ball screw - a novel technique for maintaining accuracy and extending service life. The structure, features and other objects of the present invention will be further described in the following detailed description of the preferred embodiments: f [Embodiment] σ Referring to Figures 1 and 2, the present invention includes: Thread groove (1 1 ), the oil groove of the oil flow-screw (10)' has an outer diameter with a spiral shape. The bottom end of the thread groove (11) is formed with a special guide (12); a nut ( 2 0 ), having an inner hole through which a screw (丄〇) is inserted, and the inner hole is provided with an internal thread (2 1 ) corresponding to a screw (i 〇) thread groove (丄丄) (2) The bottom end is formed with | 200909712 oil groove (22) for guiding the flow of lubricating oil, and the outer circumference of the nut (20) is recessed with at least one counterbore at the position of the oil groove (2 2) (2 3 ) , (2 3 ) can be geometrically changed, which can be circular, elliptical, square, polygonal or irregular, etc.; the plural bead (3 〇)' is kept in the aforementioned screw (1 〇 Between the screw snail (1 1 ) and the internal thread (2 1 ) of the nut (2 〇), the screw (20) and the screw (i 〇) can be rotated relative to each other, and The ball (3 〇) maintains a margin with the screw (1 〇) and the nut (2 2) of the oil groove (2 2) at the bottom end; and the magnetic unit directly uses a permanent magnet (4)丄), the shape is the same as the shape of the hole (2 3 ), the height is smaller than the depth of the counterbore (2 3 ), so that the 4 permanent magnet (4 1) can be completely buried and fixed in the counterbore (2 3)' Make a counterbore (2 3) with a permanent magnet (4 work) configuration 'not exposed to the nut (2 〇) surface, so that the permanent magnet (4 work) makes the nut (20) oil groove (22 The bottom end correspondingly produces a comparable magnetic attraction 'so that the bottom of the oil groove (2 2) can be layered in the absorbing lubricant (5 0 )' so that the wear debris (5 Q ) no longer flows, And the bottom of the oil groove (2 2) and the ball (3 Q) maintain a margin, so the ball (3 〇) will not touch the wear debris (5 〇) that has been adsorbed in the oil groove (2 2) Therefore, the wear debris (50) no longer causes abrasive wear on the nut (2 〇) or the screw (10), and can effectively maintain the accuracy of the ball screw to 200909712 and extend its overall service life. Four and five The second embodiment shown comprises: ▲ a screw (10) having an outer diameter having a helical thread groove (1) the bottom end of the thread groove (1 1 ) is formed (1 2); The flowing oil groove screw head (2 ◦) has an inner hole through which the screw (1 〇) can be inserted, and the inner hole is provided with a screw thread (1Q) thread groove (ΐι). The bottom end of the internal thread (21) is formed with an oil groove (22) for guiding the flow of the lubricating oil, and the outer circumference of the nut (2〇) is recessed with at least one key groove (2 4); The plurality of balls (30) are held between the thread groove (1 1 ) of the screw (1 )) and the internal thread (2 丄) of the nut (2 〇) to make the nut (20) and the screw (丄〇) can be rotated relative to each other, and the balls (30) and the above-mentioned screw (1 〇) and nut (20) oil groove (! 2) (2 2) The bottom end maintains a margin; and the magnetic unit is composed of a permanent magnet (4 work) and a key (42), and the key (42) is fixed to the nut ( 2 〇) in the keyway (2 4), and the outer edge of the key (42) is recessed at the position relative to the oil groove (2 2) and at least one un-inserted assembly hole (4 3 ), so that the permanent magnet (4 1) The burying can be fixed in the assembly hole (43), so that the permanent magnet (4 1) causes the bottom end of the nut (2 〇) oil groove (2 2) to generate a corresponding magnetic force of 200909712. The same expected function as that of Figures 1 and 2 can be achieved. This embodiment is to illustrate that the present invention can be used to adsorb residual debris (50) in the lubricating oil to the oil groove (2 2 ) as long as it is provided in the nut (2 〇). The magnetic supply unit, by means of the magnetic attraction, causes the grinding debris to accumulate in the oil groove (22) and no longer flows, thereby reducing the abrasive wear caused by the grinding debris to the ball screw, which is the invention. In summary, the present invention can effectively maintain the accuracy of the ball screw and prolong the overall life of the ball, and has deep advantages and progress in production. It has no similar products or novels in the same kind of products. The high-invention of the concept of oysters should be in accordance with the requirements of the invention patent application. (d) ± said, only one of the (4) is more concentric than the embodiment of the case, 'When the time is not a PP a 4* jv field is not limited to the scope of the implementation of the present invention, that is, according to the invention patent scope It belongs to the scope of the present invention. A 'f should still be 200909712 r [Simplified illustration of the drawings] Fig. 1 is a cross-sectional view of the components of the present invention after being assembled.图图三系本发(四)二实_螺帽和供(四)元图四系 The second embodiment of the present invention 0 仏Magnetic early 兀 外观 外观 外观 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Cutout. 1 〇 ) Screw 1 2 ) Oil groove 2 0 ) Nut 2 2 ) Oil groove 2 4 ) Keyway 3 〇 ) Ball 41) Permanent magnet 4 3) Group of holes (21 thread groove internal thread sinking hole 4 )