TW201319428A - Ball screw with circulating assembly - Google Patents
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- 206010043183 Teething Diseases 0.000 description 1
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Abstract
Description
本發明係為一種線性傳動元件，尤指一種具迴流元件之滾珠螺桿。
The invention is a linear transmission element, in particular a ball screw with a reflow element.
現今的滾珠螺桿於工業方面之應用愈來愈多，除了作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。目前的滾珠螺桿設計為了讓螺桿及螺帽之間的滾珠能夠不斷循環、消除應力，皆會在螺帽的二端面對應螺桿之滾動溝處設置迴流元件，該迴流元件則是讓滾珠螺桿內部的滾動件於螺桿、螺帽間作動結束後能再次迴流至螺桿、螺帽間的關鍵，所以，如何針對迴流元件研發改良出更具競爭力的產品自然成為目前業界之重點。
請參閱圖一至圖三所示，係為目前業界常用的迴流元件（1），該迴流元件（1）係為一體成型，其外型係為一圓柱體，於該圓柱體上設有一穿孔（11），該穿孔（11）係穿透該圓柱體之兩端面，而該穿孔（11）內緣設有一個以上的導引部（12）（常見為兩個、本圖式共有四個，該導引部的數量係相對該螺桿和螺帽的滾動溝數量）（在業界通稱該導引部為：指甲），該導引部（12）就如同前段所述主要負責導引滾動件進出迴流元件（1）用，該迴流元件（1）係裝設於滾珠螺桿的螺帽（未繪出）之兩端面，且該導引部（12）係朝螺桿（2）之滾動溝（21）凸伸成型，並嵌設於滾動溝（21）中（如圖三所示），如此才能導引滾動溝（21）中的滾動件進入迴流道（13）中而進行迴流再次讓滾動件回到螺桿（2）與螺帽之間，但前述迴流元件（1）在使用後會有以下問題產生：
此種迴流元件（1）雖然具有路徑順暢、可高速運轉的優點，但因為導引部（12）是嵌陷在該螺桿（2）的滾動溝（21）中，使得該迴流元件（1）的穿孔（11）內徑（d）小於該螺桿（2）之外徑（D），因此為了安裝與該導引部（12）一體成型的迴流元件（1），必須讓螺桿（2）的滾動溝（21）螺旋延伸至螺桿（2）的端面（未繪出），亦即該滾動溝（21）為開放式穿出該端面(一般業界稱之出牙設計)，如此一來，該迴流元件（1）才能由該螺桿（2）之端面將導引部（12）旋入該滾動溝（21）中，而讓該迴流元件（1）貼合於螺帽之兩端面；然而，目前出牙式的螺桿（2）於端面會留下缺口，致使該端面呈現非完整性的面，當螺桿（2）的兩端被安裝在機台的軸承座(未繪出)時，因為兩該端面係提供該軸承座之軸承承靠，而於啟動機台馬達使螺桿產生運轉狀態時，螺桿的兩端面會因為轉動慣性而產生軸向受力負荷，而該軸向受力負荷又會因為該端面為非完整面之因素，導致端面與軸承的受力負荷分配不平均，除了使安裝在機台軸承座的軸承端面造成擠壓損傷之外，進而使螺桿在運轉狀態中產生撓曲變形的現象，不僅直接影響到迴流元件循環的順暢性，更會降低滾珠螺桿的使用壽命。
Today's ball screws are used more and more in industry. In addition to being a high-precision effect of linear feed transmission, others have the advantages of low friction loss rate, high energy conversion rate, low noise and high rigidity. Therefore, the importance of the ball screw for various industrial applications and tools today is not to be said. In the current ball screw design, in order to allow the balls between the screw and the nut to continuously circulate and eliminate the stress, a reflow element is arranged at the rolling groove of the screw at the two end faces of the nut, and the reflow element is inside the ball screw. The rolling element can be reflowed back to the screw and nut after the screw and nut are actuated. Therefore, how to develop a more competitive product for the reflow component has naturally become the focus of the industry.
Referring to FIG. 1 to FIG. 3 , it is a reflow element ( 1 ) commonly used in the industry. The reflow element ( 1 ) is integrally formed, and its appearance is a cylinder, and a perforation is provided on the cylinder ( 11), the perforation (11) penetrates both end faces of the cylinder, and the inner edge of the perforation (11) is provided with more than one guiding portion (12) (usually two, four in total) The number of the guiding portions is relative to the number of rolling grooves of the screw and the nut (commonly referred to as the guiding portion in the industry), and the guiding portion (12) is mainly responsible for guiding the rolling members in and out as described in the preceding paragraph. For the reflow element (1), the reflow element (1) is mounted on both end faces of a nut (not shown) of the ball screw, and the guiding portion (12) is directed to the rolling groove of the screw (2) (21) ) projecting and embedding in the rolling groove (21) (as shown in Figure 3), so as to guide the rolling elements in the rolling groove (21) into the return channel (13) for reflow and let the rolling elements Returning to between the screw (2) and the nut, but the aforementioned reflow element (1) will have the following problems after use. Health:
Although the reflow element (1) has the advantages of smooth path and high speed operation, since the guide portion (12) is trapped in the rolling groove (21) of the screw (2), the reflow element (1) The inner diameter (d) of the perforation (11) is smaller than the outer diameter (D) of the screw (2), so in order to mount the reflow element (1) integrally formed with the guide portion (12), the screw (2) must be allowed The rolling groove (21) spirally extends to the end surface of the screw (2) (not shown), that is, the rolling groove (21) is openly passed through the end surface (generally known as the teething design), and thus, The reflow element (1) can screw the guiding portion (12) into the rolling groove (21) from the end surface of the screw (2), and the reflow element (1) is attached to both end faces of the nut; however, At present, the tapping screw (2) leaves a notch at the end face, causing the end face to exhibit a non-integrity surface, when both ends of the screw (2) are mounted on the bearing housing of the machine (not shown) because The two end faces provide bearing bearing of the bearing seat, and when the starting machine motor makes the screw run, the screw The axial end forces of the rod end face will be axially loaded due to the rotational inertia, and the axial force load will be uneven due to the non-complete surface of the end face, resulting in uneven distribution of the bearing load of the end face and the bearing, except for installation In addition to the crush damage caused by the bearing end face of the bearing housing of the machine block, the phenomenon that the screw is flexed and deformed in the running state not only directly affects the smoothness of the circulation of the reflow element, but also reduces the service life of the ball screw.
基於上述習知技術之問題點，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。
即，本發明目的在於，研發一種能應用於不出牙螺桿的迴流元件，且該迴流元件係裝設於螺帽之兩端面。
為達上述之目的，本發明係為一種具迴流元件之滾珠螺桿，係包含：
複數滾動件；
一螺桿，其係朝一方向延伸為長條狀之構型，定義該延伸方向為軸方向，該螺桿係設有複數螺旋狀之滾動溝；
一螺帽，係設有一供該螺桿穿設之貫穿孔，該貫穿孔之內緣面係設有相對該滾動溝之滾動槽，該滾動溝及滾動槽係構成複數負荷路徑，該螺帽之軸方向兩端分別具有一端面，一該端面設有貫穿另一端面之複數迴流孔，該迴流孔係間隔設置，兩該端面係分別設有一第一半迴流道，該第一半迴流道之兩端分別與該迴流孔及滾動槽銜接；
兩迴流元件，其分別貼設於螺帽之兩該端面，該迴流元件包含：第一構件及第二構件，該第一構件與第二構件係採軸方向堆疊組合成該迴流元件；該第一構件係設有第一穿孔、至少一凹槽道及至少一第一導引部；該第二構件係設有第二穿孔、至少一通槽道及至少一第二導引部，該第一導引部與第二導引部係分別嵌設於該滾動溝中，該第一穿孔與第二穿孔係供該螺桿穿設其中，該凹槽道與該通槽道構成第二半迴流道，該第二半迴流道係與該第一半迴流道構成迴流道，兩該迴流道、迴流孔及負荷路徑構成一循環路徑，該循環路徑係供該滾動件設置；
其中，該第一穿孔之第一內徑面與該第一導引部之第一徑向面所構成一虛擬相切圓的內徑係大於該螺桿之外徑；該第二穿孔之第二內徑面與該第二導引部之第二徑向面所構成一虛擬相切圓的內徑係大於該螺桿之外徑。
為了更進一步瞭解本發明之特徵及技術內容，請參閱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。
Based on the problems of the above-mentioned conventional techniques, the inventors of the present invention have succeeded in research and development, and the inventions which can achieve the object of the following inventions are finally born.
That is, an object of the present invention is to develop a reflow element which can be applied to a screwless screw, and which is mounted on both end faces of the nut.
For the above purposes, the present invention is a ball screw having a reflow element, comprising:
Multiple rolling parts;
a screw extending in a strip-like configuration in one direction, defining the extending direction as an axial direction, the screw system being provided with a plurality of spiral rolling grooves;
a nut is provided with a through hole through which the screw is inserted, and an inner surface of the through hole is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a plurality of load paths, and the nut is Each of the two ends of the axial direction has an end surface, and the end surface is provided with a plurality of return holes extending through the other end surface. The return holes are spaced apart, and the end faces are respectively provided with a first half return flow path, and the first half return flow path is respectively The two ends are respectively connected to the return hole and the rolling groove;
Two reflow elements respectively attached to the two end faces of the nut, the reflow element comprising: a first member and a second member, the first member and the second member are stacked and combined into the reflow element; a first through hole, at least one groove, and at least one first guiding portion; the second member is provided with a second through hole, at least one through channel and at least one second guiding portion, the first The guiding portion and the second guiding portion are respectively embedded in the rolling groove, wherein the first through hole and the second through hole are provided through the screw, and the groove channel and the through channel form a second half return flow path The second half return flow system and the first half return flow path constitute a return flow path, and the return flow path, the return flow hole and the load path form a circulation path, and the circulation path is provided for the rolling member;
Wherein the first inner diameter surface of the first perforation and the first radial surface of the first guiding portion form a virtual tangential circle having an inner diameter greater than an outer diameter of the screw; the second perforation second The inner diameter of the inner diameter surface and the second radial surface of the second guiding portion forming a virtual tangent circle is larger than the outer diameter of the screw.
In order to further understand the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the present invention and the accompanying drawings. .
以下茲配合圖式列舉一較佳實施例，用以對本發明之組成構件及功效作進一步說明，其中各圖式之簡要說明如下：
圖四係為本發明具迴流元件之滾珠螺桿分解圖。
圖五係為本發明具迴流元件之滾珠螺桿組合圖。
圖六係為圖五軸方向剖視圖。
圖七係為本發明迴流元件之第一構件的端視圖。
圖八係為本發明迴流元件之第二構件的端視圖。
請參閱圖四至圖八所示，首先，要先說明的是，本發明之迴流元件（3）係使用於複數滾動溝（11）及滾動槽（211）的滾珠螺桿，而迴流元件（3）的導引部（第一導引部（312）及第二導引部（322））之數量係相對該滾動溝（11）及滾動槽（211）之數量設置，而為了方便凸顯本發明迴流元件（3）的結構設計，以下較佳實施例係使用四條滾動溝（11）及滾動槽（211）的滾珠螺桿作說明，但本發明基本上只要是兩條滾動溝（11）及滾動槽（211）的滾珠螺桿就可應用，故如有滾珠螺桿為三條以上的滾動溝（11）及滾動槽（211）者，且迴流元件（3）之構型與本發明所主張專利範圍相同者，亦落入本發明之請求範圍中，在此合先述明；
以下說明本發明一較佳實施例，本發明係為一種具迴流元件之滾珠螺桿，係包含：
複數滾動件（4）；
一螺桿（1），其係朝一方向延伸為長條狀之構型，定義該延伸方向為軸方向（X），該螺桿（1）係設有四條螺旋狀之滾動溝（11）；
一螺帽（2），係設有一供該螺桿（1）穿設之貫穿孔（21），該貫穿孔（21）之內緣面係設有相對該滾動溝（11）之滾動槽（211），四該滾動溝（11）及滾動槽（211）係構成四條負荷路徑（90），該螺帽（2）之軸方向（X）兩端分別具有一端面（24），一該端面（24）設有四條貫穿另一端面（24）之迴流孔（22），四該迴流孔（22）係間隔設置，且兩該端面係分別設有四條第一半迴流道（23），各該第一半迴流道（23）之兩端分別與一該迴流孔（22）及滾動槽（211）銜接，該第一半迴流道（23）為一凸弧狀結構；
兩迴流元件（3），其分別貼設於螺帽之兩該端面（24），該迴流元件（3）包含：第一構件（31）及第二構件（32），該第一構件（31）與第二構件（32）係採軸方向（X）堆疊組合成該迴流元件（3）；該第一構件（31）係設有第一穿孔（313）、四條凹槽道（311）及兩第一導引部（312）；該第二構件（32）係設有第二穿孔（323）、四條通槽道（321）及兩第二導引部（322），該兩第一導引部（312）與兩第二導引部（322）係分別嵌設於四該滾動溝（11）中，且當第一構件（31）與第二構件（32）組合後，該第一導引部（312）係設有貼靠於該第二穿孔（323）之第二內徑面（3231）的第一承靠面（3121），該第二導引部（322）係設有貼靠於該第一穿孔（313）之第一內徑面（3131）的第二承靠面（3221），使該第一導引部（312）及第二導引部（322）於導引滾動件（4）時能有較佳的強度（因為滾動件會先撞擊該導引部再進入後述的迴流道），以延長第一導引部（312）及第二導引部（322）的使用壽命；該第一穿孔（313）與第二穿孔（323）係供該螺桿（1）穿設其中，一該凹槽道（311）與一該通槽道（321）構成一第二半迴流道，該第二半迴流道為一凹弧狀結構，該迴流元件（3）係具四條第二半迴流道，四該第二半迴流道係與四該第一半迴流道（23）構成四條迴流道，而兩該迴流道之ㄧ端係分別銜接一該迴流孔（22）兩端，而兩該迴流道另一端係與一該負荷路徑（90）銜接而構成一循環路徑，依此類推共構成四條循環路徑，四該循環路徑係分別設置複數該滾動件；
再者，由圖七及圖八可清楚了解，本發明為了讓迴流元件（3）使用於不出牙的螺桿（如圖四所示，其滾動溝（11）未延伸至螺桿（1）的端面（12），使該端面（12）成完整平面），故本發明將迴流元件（3）徑方向分割成一第一構件（31）及一第二構件（32），由圖七可發現，該第一構件（31）的兩第一導引部（312）係分布於該第一穿孔（313）之圓周角180度內，而使該第一穿孔（313）之第一內徑面（3131）與兩該第一導引部（312）之第一徑向面（3122）所構成一虛擬相切圓（5）(註：相切圓（5）與第一徑向面（3122）及第一內徑面（3131）只需局部相切即可，但該相切圓（5）不能與第一徑向面（3122）及第一內徑面（3131）有干涉情形)的內徑（D2）係大於該螺桿（1）之外徑（D1）；由圖八可發現，該第二構件（32）的兩第二導引部（322）係分布於該第二穿孔（323）之圓周角180度內，而使該第二穿孔（323）之第二內徑面（3231）與該兩第二導引部（322）之第二徑向面（3222）所構成一虛擬相切圓（5）(註：相切圓（5）與第二徑向面（3222）及第二內徑面（3231）只需局部相切即可，但該相切圓（5）不能與第二徑向面（3222）及第二內徑面（3231）有干涉情形)的內徑（D3）係大於該螺桿（1）之外徑（D1）。
以上說明本發明各元件之結構及組態，以下說明本發明之迴流元件組裝方式：
本發明係藉由該第一穿孔（313）之第一內徑面（3131）與該第一導引部（312）之第一徑向面（3122）所構成一虛擬相切圓（5）的內徑（D2）係大於該螺桿（1）之外徑（D1）、及該第二穿孔（323）之第二內徑面（3231）與該第二導引部（322）之第二徑向面（3222）所構成一虛擬相切圓（5）的內徑（D3）係大於該螺桿（1）之外徑（D1）之特徵，使得該第一構件（31）及第二構件（32）能直接穿設於該螺桿（1），當第一構件（31）及第二構件（32）皆穿設於螺桿（1）後，再將第一導引部（312）及第二導引部（322）分別嵌設於相對應的滾動溝（11）中，而後將第一構件（31）及第二構件（32）由軸方向（X）堆疊組合成該迴流元件（3），而該凹槽道（311）與一該通槽道（321）構成一第二半迴流道，該迴流元件共構成四條第二半迴流道，四該第二半迴流道係與四該第一半迴流道（23）構成四條迴流道，而兩該迴流道（螺帽兩端面各有一迴流道）、一迴流孔（22）及一負荷路徑（90）構成一循環路徑，共構成四條循環路徑，四該循環路徑係分別設置複數該滾動件（4），即完成該滾珠螺桿的組裝流程。故本發明藉由該迴流元件的設計，使得螺桿不須出牙，而讓螺桿之兩端面為一完整平面，當螺桿裝設於機台時，使螺桿的端面與軸承之間能完整承靠，以改善習知技術的問題點。
綜所上述，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，祈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疇。
A preferred embodiment will be further described below in conjunction with the drawings to further illustrate the components and functions of the present invention. The brief description of each drawing is as follows:
Figure 4 is an exploded view of the ball screw with the reflow element of the present invention.
Figure 5 is a combination view of a ball screw with a reflow element of the present invention.
Figure 6 is a cross-sectional view in the five-axis direction of the figure.
Figure 7 is an end elevational view of the first component of the reflow element of the present invention.
Figure 8 is an end elevational view of the second component of the reflow element of the present invention.
Referring to Figures 4 to 8, first, the reflow element (3) of the present invention is used for the ball screw of the plurality of rolling grooves (11) and the rolling groove (211), and the reflow element (3) The number of the guiding portions (the first guiding portion (312) and the second guiding portion (322)) is set relative to the number of the rolling grooves (11) and the rolling grooves (211), and the reflow of the present invention is highlighted for convenience. The structural design of the component (3), the following preferred embodiment uses a ball screw of four rolling grooves (11) and rolling grooves (211) for illustration, but the present invention basically only needs two rolling grooves (11) and rolling grooves. The ball screw of (211) can be applied, so if there are three or more rolling grooves (11) and rolling grooves (211), and the configuration of the reflow element (3) is the same as the claimed patent range of the present invention. And also fall within the scope of the request of the present invention, which will be described first herein;
The following describes a preferred embodiment of the present invention. The present invention is a ball screw with a reflow element, which comprises:
Multiple rolling elements (4);
a screw (1) extending in a strip-like configuration in one direction, defining the direction of extension is an axial direction (X), the screw (1) is provided with four spiral rolling grooves (11);
a nut (2) is provided with a through hole (21) through which the screw (1) is disposed, and an inner surface of the through hole (21) is provided with a rolling groove (211) opposite to the rolling groove (11). And the rolling groove (11) and the rolling groove (211) constitute four load paths (90), and the end faces (24) of the axial direction (X) of the nut (2) respectively have an end surface (24), and the end surface ( 24) having four return holes (22) penetrating through the other end face (24), wherein the return holes (22) are spaced apart, and the two end faces are respectively provided with four first half return passages (23), respectively The two ends of the first return flow path (23) are respectively engaged with a return hole (22) and a rolling groove (211), and the first half return flow path (23) is a convex arc structure;
Two reflow elements (3) respectively attached to the two end faces (24) of the nut, the reflow element (3) comprising: a first member (31) and a second member (32), the first member (31) And the second member (32) is stacked in the direction of the axis (X) to form the reflow element (3); the first member (31) is provided with a first through hole (313), four groove paths (311), and Two first guiding portions (312); the second member (32) is provided with a second through hole (323), four through channels (321) and two second guiding portions (322), the two first guiding portions The guiding portion (312) and the two second guiding portions (322) are respectively embedded in the four rolling grooves (11), and after the first member (31) is combined with the second member (32), the first The guiding portion (312) is provided with a first bearing surface (3121) abutting against the second inner diameter surface (3231) of the second through hole (323), and the second guiding portion (322) is provided a second bearing surface (3221) abutting against the first inner diameter surface (3131) of the first through hole (313), so that the first guiding portion (312) and the second guiding portion (322) are guided When the rolling element (4) is introduced a preferred strength (because the rolling member will first strike the guiding portion and then enter the return channel described later) to extend the service life of the first guiding portion (312) and the second guiding portion (322); the first perforating (313) and the second through hole (323) for the screw (1) to be penetrated therein, the groove channel (311) and the channel (321) form a second half return channel, the second half The return channel is a concave arc structure, the reflow element (3) is provided with four second half return channels, and the second half return flow system and the fourth first return flow path (23) constitute four return channels, and two The ends of the return channel are respectively connected to two ends of the return hole (22), and the other ends of the return channel are connected with a load path (90) to form a circulation path, and so on, to form four circulation paths. , the four loop paths are respectively set to a plurality of the rolling elements;
Furthermore, as is clear from FIGS. 7 and 8, the present invention is to use the reflow element (3) for a screw that does not have teeth (as shown in FIG. 4, the rolling groove (11) does not extend to the screw (1). The end surface (12) makes the end surface (12) a complete plane), so the invention divides the radial direction of the reflow element (3) into a first member (31) and a second member (32), as can be seen from FIG. The first guiding portions (312) of the first member (31) are distributed within 180 degrees of the circumferential angle of the first through hole (313), and the first inner diameter surface of the first through hole (313) is 3131) and a first tangential circle (5) formed by the first radial faces (3122) of the first guiding portion (312) (note: tangent circle (5) and first radial surface (3122) And the first inner diameter surface (3131) only needs to be partially tangent, but the tangent circle (5) cannot be interfered with the first radial surface (3122) and the first inner diameter surface (3131). The diameter (D2) is greater than the outer diameter (D1) of the screw (1); as can be seen from FIG. 8, the two second guiding portions (322) of the second member (32) are distributed over the second through hole (3). 23) a circumferential angle of 180 degrees, and the second inner diameter surface (3231) of the second through hole (323) and the second radial surface (3222) of the two second guiding portions (322) constitute a Virtual tangent circle (5) (Note: the tangent circle (5) and the second radial surface (3222) and the second inner diameter surface (3231) need only be partially tangent, but the tangent circle (5) The inner diameter (D3) which cannot interfere with the second radial surface (3222) and the second inner diameter surface (3231) is larger than the outer diameter (D1) of the screw (1).
The structure and configuration of each component of the present invention are described above. The following describes the assembly method of the reflow component of the present invention:
The present invention forms a virtual tangent circle (5) by the first inner diameter surface (3131) of the first through hole (313) and the first radial surface (3122) of the first guiding portion (312). The inner diameter (D2) is greater than the outer diameter (D1) of the screw (1), and the second inner diameter surface (3231) of the second perforation (323) and the second second portion (322) The inner diameter (D3) of the virtual tangent circle (5) formed by the radial surface (3222) is greater than the outer diameter (D1) of the screw (1), so that the first member (31) and the second member (32) can be directly threaded on the screw (1), and after the first member (31) and the second member (32) are all threaded through the screw (1), the first guiding portion (312) and the first The two guiding portions (322) are respectively embedded in the corresponding rolling grooves (11), and then the first member (31) and the second member (32) are stacked by the axial direction (X) to form the reflow element (3). And the groove channel (311) and the channel (321) form a second half return flow path, the return element comprises a total of four second half return channels, and the second half return flow system and the fourth the first The semi-return channel (23) constitutes four return channels, and the two return channels (one return surface on each end of the nut), a return hole (22) and a load path (90) form a circulation path, which constitutes four circulation paths. Fourth, the circulation path is respectively set to a plurality of the rolling members (4), that is, the assembly process of the ball screw is completed. Therefore, according to the design of the reflow element, the screw does not need to be toothed, and the two ends of the screw are a complete plane. When the screw is installed on the machine, the end face of the screw and the bearing can be completely supported. To improve the problem of conventional technology.
In view of the above, the "industrial availability" of the present invention should be unquestionable. In addition, the feature technology disclosed in the embodiment of the present invention has not been seen in publications before the application, nor has it been disclosed. The use of not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention are in compliance with the patent regulations, and the application for the invention patent is filed according to law. Please give us a review and grant a patent as soon as possible.
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.
(1)．．．迴流元件(1). . . Reflow element
(11)．．．穿孔(11). . . perforation
(12)．．．導引部(12). . . Guide
(13)．．．迴流道(13). . . Return channel
(2)．．．螺桿(2). . . Screw
(21)．．．滾動溝(twenty one). . . Rolling groove
(D)．．．外徑(D). . . Outer diameter
(d)．．．內徑(d). . . the inside diameter of
(1)．．．螺桿(1). . . Screw
(11)．．．滾動溝(11). . . Rolling groove
(12)．．．端面(12). . . End face
(2)．．．螺帽(2). . . Nut
(21)．．．貫穿孔(twenty one). . . Through hole
(211)．．．滾動槽(211). . . Rolling groove
(22)．．．迴流孔(twenty two). . . Return hole
(23)．．．第一半迴流道(twenty three). . . First half return channel
(24)．．．端面(twenty four). . . End face
(3)．．．迴流元件(3). . . Reflow element
(31)．．．第一構件(31). . . First member
(311)．．．凹槽道(311). . . Groove road
(312)．．．第一導引部(312). . . First guide
(3121)．．．第一承靠面(3121). . . First bearing surface
(3122)．．．第一徑向面(3122). . . First radial plane
(313)．．．第一穿孔(313). . . First perforation
(3131)．．．第一內徑面(3131). . . First inner diameter surface
(32)．．．第二構件(32). . . Second member
(321)．．．通槽道(321). . . Channel
(322)．．．第二導引部(322). . . Second guiding portion
(3221)．．．第二承靠面(3221). . . Second bearing surface
(3222)．．．第二徑向面(3222). . . Second radial plane
(323)．．．第二穿孔(323). . . Second perforation
(3231)．．．第二內徑面(3231). . . Second inner diameter surface
(4)．．．滾動件(4). . . Rolling element
(5)．．．相切圓(5). . . Tangent circle
(D1)．．．外徑(D1). . . Outer diameter
(D2、D3)．．．內徑(D2, D3). . . the inside diameter of
(90)．．．負荷路徑(90). . . Load path
(X)．．．軸方向(X). . . Axis direction
圖一係為習知技術之迴流元件立體圖。
圖二係為習知技術之迴流元件立體圖另一側面。
圖三係為習知技術之迴流元件與螺桿配合之端視圖。
圖四係為本發明具迴流元件之滾珠螺桿分解圖。
圖五係為本發明具迴流元件之滾珠螺桿組合圖。
圖六係為圖五軸方向剖視圖。
圖七係為本發明迴流元件之第一構件的端視圖。
圖八係為本發明迴流元件之第二構件的端視圖。
Figure 1 is a perspective view of a reflow element of the prior art.
Figure 2 is a side view of a perspective view of a reflow element of the prior art.
Figure 3 is an end view of a conventional reflow element in cooperation with a screw.
Figure 4 is an exploded view of the ball screw with the reflow element of the present invention.
Figure 5 is a combination view of a ball screw with a reflow element of the present invention.
Figure 6 is a cross-sectional view in the five-axis direction of the figure.
Figure 7 is an end elevational view of the first component of the reflow element of the present invention.
Figure 8 is an end elevational view of the second component of the reflow element of the present invention.
(1)．．．螺桿(1). . . Screw
(11)．．．滾動溝(11). . . Rolling groove
(12)．．．端面(12). . . End face
(2)．．．螺帽(2). . . Nut
(21)．．．貫穿孔(twenty one). . . Through hole
(211)．．．滾動槽(211). . . Rolling groove
(22)．．．迴流孔(twenty two). . . Return hole
(23)．．．半迴流道(twenty three). . . Semi-return
(24)．．．端面(twenty four). . . End face
(3)．．．迴流元件(3). . . Reflow element
(31)．．．第一構件(31). . . First member
(311)．．．凹槽道(311). . . Groove road
(312)．．．導引部(312). . . Guide
(313)．．．第一穿孔(313). . . First perforation
(3131)．．．第一內徑面(3131). . . First inner diameter surface
(32)．．．第二構件(32). . . Second member
(321)．．．通槽道(321). . . Channel
(322)．．．導引部(322). . . Guide
(323)．．．第二穿孔(323). . . Second perforation
(3231)．．．第二內徑面(3231). . . Second inner diameter surface
Claims (3)
複數滾動件；
一螺桿，其係朝一方向延伸為長條狀之構型，定義該延伸方向為軸方向，該螺桿係設有複數螺旋狀之滾動溝；
一螺帽，係設有一供該螺桿穿設之貫穿孔，該貫穿孔之內緣面係設有相對該滾動溝之滾動槽，該滾動溝及滾動槽係構成複數負荷路徑，該螺帽之軸方向兩端分別具有一端面，一該端面設有貫穿另一端面之複數迴流孔，該迴流孔係間隔設置，兩該端面係分別設有一第一半迴流道，該第一半迴流道之兩端分別與該迴流孔及滾動槽銜接；
兩迴流元件，其分別貼設於兩該端面，該迴流元件包含：第一構件及第二構件，該第一構件與第二構件係採軸方向堆疊組合成該迴流元件；該第一構件係設有第一穿孔、至少一凹槽道及至少一第一導引部；該第二構件係設有第二穿孔、至少一通槽道及至少一第二導引部，該第一導引部與第二導引部係分別嵌設於該滾動溝中，該第一穿孔與第二穿孔係供該螺桿穿設其中，該凹槽道與該通槽道構成第二半迴流道，該第二半迴流道係與該第一半迴流道構成迴流道，兩該迴流道、迴流孔及負荷路徑構成一循環路徑，該循環路徑係供該滾動件設置；
其中，該第一穿孔之第一內徑面與該第一導引部之第一徑向面所構成一虛擬相切圓的內徑係大於該螺桿之外徑；該第二穿孔之第二內徑面與該第二導引部之第二徑向面所構成一虛擬相切圓的內徑係大於該螺桿之外徑。A ball screw with a reflow element, comprising:
Multiple rolling parts;
a screw extending in a strip-like configuration in one direction, defining the extending direction as an axial direction, the screw system being provided with a plurality of spiral rolling grooves;
a nut is provided with a through hole through which the screw is inserted, and an inner surface of the through hole is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a plurality of load paths, and the nut is Each of the two ends of the axial direction has an end surface, and the end surface is provided with a plurality of return holes extending through the other end surface. The return holes are spaced apart, and the end faces are respectively provided with a first half return flow path, and the first half return flow path is respectively The two ends are respectively connected to the return hole and the rolling groove;
Two reflow elements respectively attached to the two end faces, the reflow element comprising: a first member and a second member, the first member and the second member are stacked in a direction of a shaft to form the reflow element; the first member is a first through hole, at least one groove track and at least one first guiding portion; the second member is provided with a second through hole, at least one through channel and at least one second guiding portion, the first guiding portion And the second guiding portion is respectively embedded in the rolling groove, wherein the first through hole and the second through hole are provided through the screw, and the groove channel and the through channel form a second half return flow path, the first The second half return flow system and the first half return flow path constitute a return flow path, and the return flow path, the return flow hole and the load path form a circulation path, and the circulation path is provided for the rolling member;
Wherein the first inner diameter surface of the first perforation and the first radial surface of the first guiding portion form a virtual tangential circle having an inner diameter greater than an outer diameter of the screw; the second perforation second The inner diameter of the inner diameter surface and the second radial surface of the second guiding portion forming a virtual tangent circle is larger than the outer diameter of the screw.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100140629A TWI443274B (en) | 2011-11-08 | 2011-11-08 | Ball screw with reflow element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100140629A TWI443274B (en) | 2011-11-08 | 2011-11-08 | Ball screw with reflow element |
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| Publication Number | Publication Date |
|---|---|
| TW201319428A true TW201319428A (en) | 2013-05-16 |
| TWI443274B TWI443274B (en) | 2014-07-01 |
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|---|---|---|---|
| TW100140629A TWI443274B (en) | 2011-11-08 | 2011-11-08 | Ball screw with reflow element |
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| Country | Link |
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