TWI512215B - Linear drive ball spline device - Google Patents
Linear drive ball spline device Download PDFInfo
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- TWI512215B TWI512215B TW102131134A TW102131134A TWI512215B TW I512215 B TWI512215 B TW I512215B TW 102131134 A TW102131134 A TW 102131134A TW 102131134 A TW102131134 A TW 102131134A TW I512215 B TWI512215 B TW I512215B
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Description
本發明係為一種線性傳動元件,尤指一種線性傳動滾珠花鍵裝置。 The present invention is a linear transmission element, and more particularly a linear drive ball spline device.
本發明是關於透過多數滾珠使花鍵軸和螺帽構件組合成相對直線運動之傳動元件,使用在工作機械或各種產業機械的直線引導部或產業用機器人的扭矩傳達部等的滾珠花鍵裝置。 The present invention relates to a transmission element in which a spline shaft and a nut member are combined in a relatively linear motion by a plurality of balls, and a ball spline device such as a linear guide portion of a working machine or various industrial machines or a torque transmitting portion of an industrial robot is used. .
習知,此種滾珠花鍵裝置已知有日本實開昭61-179414號專利案或特開昭58-137616號專利案,所揭示的滾珠花鍵裝置。該滾珠花鍵裝置,是由:具備有沿著長方向延伸的複數條滾動溝的花鍵軸;及透過多數滾珠組裝在上述花鍵軸的同時,具備有上述滾珠無限循環路徑的螺帽構件所構成,隨著滾珠的無限循環可使上述螺帽構件在花鍵軸的周圍沿著其長方向移動自如。 It is known that such a ball spline device is known as a ball spline device disclosed in Japanese Laid-Open Patent Publication No. SHO 61-179414 or No. Sho 58-137616. The ball spline device includes: a spline shaft having a plurality of rolling grooves extending in a longitudinal direction; and a nut member having a plurality of balls assembled to the spline shaft and having an infinite loop path of the ball According to this configuration, the nut member can be moved along the longitudinal direction around the spline shaft in accordance with the infinite circulation of the balls.
此外,螺帽構件所具備的滾珠無限循環路徑,是由:供滾珠設置的螺帽構件之滾動溝及花鍵軸之滾動溝所構成的負荷通道;與該負荷通道平行形成的滾珠返回通道;及與該等負荷通道和滾珠返回通道形成連結的U字型方向轉換道所構成。接著,藉由在負荷通道和滾珠返回通道的兩端配置上述方向轉換道以構成滾珠無限循環道。 In addition, the infinite loop path of the ball provided by the nut member is: a load passage formed by a rolling groove of a nut member provided by the ball and a rolling groove of the spline shaft; and a ball return passage formed in parallel with the load passage; And a U-shaped direction changing track that is connected to the load passage and the ball return passage. Then, the above-described direction switching track is disposed at both ends of the load passage and the ball return passage to constitute a ball infinite loop.
上述文獻滾珠花鍵裝置是在形成圓筒狀的螺帽構件的內圍面和穿設於該內圍面的花鍵軸之間的間隙裝設合成樹脂製保持器,利用該保持器和螺帽構件的配合形成滾珠返回通道及方向轉換道。 In the above-described document ball spline device, a synthetic resin holder is attached to a gap between an inner peripheral surface of a cylindrical nut member and a spline shaft that is formed in the inner peripheral surface, and the retainer and the screw are used. The cooperation of the cap members forms a ball return passage and a direction change passage.
此外,為了讓滾動在上述負荷通道的滾珠經由方向轉換移動至滾珠返回通道,需要讓該滾珠脫離花鍵軸的滾珠滾動溝槽。因此,習知的滾珠花鍵裝置是在上述保持器設有連續於上述方向轉換道的滾珠掏起部,使在上述滾珠滾動溝槽滾動過來的滾珠越過該掏起部從該滾珠滾動溝槽脫離,形成為收容在由保持器和螺帽構件合作形成的方向轉換道內。 Further, in order to move the ball rolling in the above-described load passage to the ball return passage via the direction change, it is necessary to disengage the ball from the ball rolling groove of the spline shaft. Therefore, in the conventional ball spline device, the retainer is provided with a ball scooping portion continuous with the direction changing passage, and the ball rolling in the ball rolling groove passes over the scooping portion from the ball rolling groove. The detachment is formed to be housed in a direction change path formed by the cooperation of the retainer and the nut member.
但是,於上述說明的習知滾珠花鍵裝置,因是由保持器和螺帽構件配合形成滾珠返回通道,所以該滾珠返回通道至少是必須從花鍵軸朝其半徑方向空出保持器厚度量的距離。此外,於保持器形成有上述方向轉換道或滾珠返回通道,為了實現該複雜形狀是利用模具以合成樹脂射出成型製成。因此,習用的滾珠花鍵有以下問題點:設在螺帽構件內圍面的保持器若是變形,則該保持器就會接觸花鍵軸,導致妨礙螺帽構件的運動,所以保持器難以形成極端薄型。因此,就花鍵軸和螺帽構件之間收容著保持器的習知滾珠花鍵裝置而言,螺帽構件的外徑會受到保持器厚度的影響,以致在螺帽構件外徑尺寸變大。 However, in the conventional ball spline device described above, since the retainer and the nut member cooperate to form the ball return passage, the ball return passage must at least have a thickness of the retainer from the spline shaft toward the radial direction thereof. the distance. Further, the above-described directional change track or ball return passage is formed in the retainer, and in order to realize the complicated shape, it is produced by injection molding of a synthetic resin using a mold. Therefore, the conventional ball spline has the following problem: if the retainer provided on the inner surface of the nut member is deformed, the retainer will contact the spline shaft, thereby obstructing the movement of the nut member, so that the retainer is difficult to form. Extremely thin. Therefore, in the conventional ball spline device in which the retainer is housed between the spline shaft and the nut member, the outer diameter of the nut member is affected by the thickness of the retainer, so that the outer diameter of the nut member becomes larger. .
習知滾珠花鍵裝置,利用上述保持器使滾珠得以無限循環,但該保持器為塑膠射出成型製成,其長度尺寸皆已固定,故無法 適用於不同長度的螺帽,通用性不高。 The conventional ball spline device utilizes the above retainer to make the ball infinitely circulate, but the retainer is made of plastic injection molding, and its length and size are fixed, so it cannot be Suitable for nuts of different lengths, the versatility is not high.
本發明是有鑒於上述問題點而為的發明,其目的是,提供一種能夠充分發揮原有功能,且螺帽構件外徑能夠極限小型化,並且組裝不費工時,能夠價廉並且簡便製造又能夠維持品質可靠性的滾珠花鍵裝置。 The present invention has been made in view of the above problems, and it is an object of the invention to provide an advantage that the original function can be sufficiently exhibited, and the outer diameter of the nut member can be minimized, and the assembly can be inexpensive and simple. A ball spline device capable of maintaining quality reliability.
為達成上述之目的,本發明係為一種線性傳動滾珠花鍵裝置,係包含:一花鍵軸,其朝一方向延伸為長條狀結構,定義該延伸方向為軸方向,該花鍵軸之表面設有複數條沿軸方向延伸設置的滾動溝;一移動體,其包含本體、兩迴流件及複數滾動件,該本體係設有一供該花鍵軸套設之穿孔,該穿孔之內緣面設有相對該滾動溝之滾動槽,該滾動溝與滾動槽係構成一負荷路徑,且該穿孔之兩端分別設有一安裝孔,該安裝孔之直徑係大於該穿孔之直徑且兩者相互連通,該本體更設有數量相對該滾動槽且平行於該滾動槽設置之迴流孔,該迴流孔之兩端係與該安裝孔相連通,該迴流孔之截面係為一圓形;兩該迴流件係分別容置於兩該安裝孔,該迴流件係設有數量相對該滾動槽之迴流道,該迴流道輪廓係為一U形,其兩端係分別與該負荷路徑及迴流孔銜接而構成一循環路徑;該複數滾動件係設置於該循環路徑。 In order to achieve the above object, the present invention is a linear drive ball spline device comprising: a spline shaft extending in a direction into a strip-like structure defining the direction of the extension as an axial direction, the surface of the spline shaft a plurality of rolling grooves extending along the axial direction; a moving body comprising a body, two reflow members and a plurality of rolling elements, the system is provided with a perforation for the spline shaft, the inner surface of the perforation a rolling groove is formed opposite to the rolling groove, the rolling groove and the rolling groove form a load path, and two ends of the hole are respectively provided with a mounting hole, the diameter of the mounting hole is larger than the diameter of the hole and the two are connected to each other The body is further provided with a plurality of return holes disposed opposite to the rolling groove and parallel to the rolling groove, the two ends of the return hole are connected to the mounting hole, and the cross-section of the return hole is a circular shape; The components are respectively disposed in the two mounting holes, and the reflowing member is provided with a return flow path relative to the rolling groove. The return channel contour is a U-shaped shape, and the two ends of the return channel are respectively connected to the load path and the return hole. Composition one a loop path; the plurality of scroll members are disposed in the loop path.
藉由上述之結構,於花鍵軸與本體之間無設置保持器故可縮小該本體之外徑,而該迴流件係設置於該本體之兩端的安裝孔, 當該本體只有軸方向之長度變化時,則該迴流件仍可通用於該本體,故提高了該迴流件之通用性。 According to the above structure, the outer diameter of the main body can be reduced without providing a retainer between the spline shaft and the main body, and the reflowing member is disposed at the mounting holes at both ends of the main body. When the length of the body varies only in the axial direction, the reflow member can still be used for the body, thereby improving the versatility of the reflow member.
再者,為使該滾動件於該循環路徑運行時獲得較佳的順暢度,本發明係針對最容易造成滾動件運行不順暢的迴流道,進行特殊路徑之設計,其說明如下:該迴流道區分為四段,該四段分別依序銜接為爬升段、第一迴轉段、第二迴轉段及銜接段;該迴流道之寬度係大於該滾動件之直徑。該爬升段係部分容設於該滾動溝,該爬升段係具有一爬升高度及爬升長度,該爬升高度係小於該爬升長度,且該爬升長度係符合此關係式:0.25倍滾動件之直徑≦爬升長度≦0.5倍滾動件之直徑。該第一迴轉段與第二迴轉段係構成一迴轉段,該迴轉段之內輪廓的半徑係符合此關係式:0.5倍滾動件之直徑≦內輪廓的半徑≦滾動件之直徑。該第一迴轉段與第二迴轉段由軸方向觀之,該第一迴轉段與第二迴轉段之底部輪廓係分別由第一圓弧段及第二圓弧段相互相切銜接構成,該第一圓弧段與第二圓弧段之圓心係相異;且該第一圓弧段之長度係符合此關係式:0.5倍第二圓弧段的長度<第一圓弧段之長度<0.8倍之第二圓弧段的長度;以及該第一圓弧段之半徑係小於該第二圓弧段之半徑。 Moreover, in order to obtain better smoothness when the rolling element is operated in the circulation path, the present invention designs a special path for the return path which is most likely to cause the rolling member to run unsmoothly, and the description is as follows: the return path Divided into four segments, the four segments are respectively connected as a climbing segment, a first rotating segment, a second rotating segment and a connecting segment; the width of the returning channel is greater than the diameter of the rolling member. The climbing section is partially accommodated in the rolling groove, the climbing section has a climbing height and a climbing length, the climbing height is less than the climbing length, and the climbing length is in accordance with the relationship: 0.25 times the diameter of the rolling element≦ The climb length is 0.5 times the diameter of the rolling member. The first rotating section and the second rotating section form a rotating section, and the radius of the inner contour of the rotating section conforms to the relationship: 0.5 times the diameter of the rolling member, the radius of the inner contour, and the diameter of the rolling member. The first rotating section and the second rotating section are viewed from the axial direction, and the bottom contours of the first rotating section and the second rotating section are respectively formed by the first arc segment and the second arc segment being tangentially connected to each other. The first arc segment is different from the center of the second arc segment; and the length of the first arc segment conforms to the relationship: 0.5 times the length of the second arc segment < the length of the first arc segment < 0.8 times the length of the second arc segment; and the radius of the first arc segment is smaller than the radius of the second arc segment.
本發明為穩定將該迴流件固定於該安裝孔,係於該安裝孔之內緣面凹陷設置有一環形之固定槽,該迴流件設置該安裝孔時,該迴流件之端面係與該固定槽之內側槽壁相切設置,一固定件係設置於該固定槽,該固定件係抵觸於該迴流件之端面。 In the present invention, the reflow member is fixed to the mounting hole, and an annular fixing groove is recessed on the inner edge surface of the mounting hole. When the reflow member is provided with the mounting hole, the end surface of the reflow member is attached to the fixing groove. The inner groove wall is tangentially disposed, and a fixing member is disposed on the fixing groove, and the fixing member is in contact with the end surface of the returning member.
1‧‧‧花鍵軸 1‧‧‧ Splined shaft
11‧‧‧滾動溝 11‧‧‧ rolling groove
2‧‧‧本體 2‧‧‧ Ontology
21‧‧‧穿孔 21‧‧‧Perforation
211‧‧‧滾動槽 211‧‧‧ rolling groove
22‧‧‧安裝孔 22‧‧‧Installation holes
23‧‧‧固定槽 23‧‧‧fixed slot
231‧‧‧內側槽壁 231‧‧‧Inside groove wall
24‧‧‧迴流孔 24‧‧‧Return hole
3‧‧‧迴流件 3‧‧‧Return parts
31‧‧‧迴流道 31‧‧‧Return
32‧‧‧端面 32‧‧‧ end face
A‧‧‧爬升段 A‧‧‧ climbing section
B‧‧‧第一迴轉段 B‧‧‧First turn
C‧‧‧第二迴轉段 C‧‧‧second turn
D‧‧‧銜接段 D‧‧‧Connecting section
B1‧‧‧第一迴轉段之底部輪廓 B1‧‧‧Bottom contour of the first turn
C1‧‧‧第二迴轉段之底部輪廓 C1‧‧‧ bottom profile of the second turn
Q‧‧‧相切點 Q‧‧‧ tangent point
T‧‧‧滾動件迴轉路徑 T‧‧‧Roller turning path
R1‧‧‧第一圓弧段之半徑 Radius of the first arc segment of R1‧‧
R2‧‧‧第二圓弧段之半徑 R2‧‧‧ radius of the second arc segment
R3‧‧‧迴轉段之內輪廓半徑 Contour radius of the R3‧‧‧ revolving section
U‧‧‧迴流道之寬度 U‧‧‧The width of the return channel
H‧‧‧爬升高度 H‧‧‧Climb height
C‧‧‧爬升長度 C‧‧‧Climb length
90‧‧‧負荷路徑 90‧‧‧Load path
100‧‧‧循環路徑 100‧‧‧Circular path
X‧‧‧軸方向 X‧‧‧axis direction
4‧‧‧滾動件 4‧‧‧Rolling parts
5‧‧‧固定件 5‧‧‧Fixed parts
D1‧‧‧穿孔之直徑 D1‧‧‧ diameter of perforation
D2‧‧‧安裝孔之直徑 D2‧‧‧ diameter of mounting hole
B2、C2‧‧‧圓心 B2, C2‧‧‧ Center
第一圖係為本發明線性傳動滾珠花鍵裝置之系統圖。 The first figure is a system diagram of the linear drive ball spline device of the present invention.
第二圖係為本發明線性傳動滾珠花鍵裝置之組合圖。 The second figure is a combination view of the linear drive ball spline device of the present invention.
第三圖係為第二圖A-A剖視圖。 The third figure is a cross-sectional view of the second diagram A-A.
第四圖係為本發明線性傳動滾珠花鍵裝置之迴流件的立體圖。 The fourth figure is a perspective view of the reflow member of the linear drive ball spline device of the present invention.
第五圖係為本發明迴流件之迴流道之路徑構成示意圖。 The fifth figure is a schematic diagram of the path of the return path of the reflow member of the present invention.
第六圖係為本發明迴流件之迴流道之路徑構成示意圖,由軸方向觀之。 The sixth figure is a schematic diagram of the path of the return path of the reflow member of the present invention, which is viewed from the axial direction.
第七圖係為第五圖B-B剖視圖,係說明迴流道之爬升段細部設計。 The seventh drawing is a cross-sectional view of the fifth drawing B-B, which illustrates the design of the climbing section of the return path.
請參閱第一圖至第三圖所示係為本發明一較佳實施例,本發明係為一種線性傳動滾珠花鍵裝置,係包含:一花鍵軸(1),其朝一方向延伸為長條狀結構,定義該延伸方向為軸方向(X),該花鍵軸(1)之表面設有複數條沿軸方向(X)延伸設置的滾動溝(11);一移動體,其包含本體(2)、兩迴流件(3)及複數滾動件(4),該本體(2)係設有一供該花鍵軸(1)套設之穿孔(21),該穿孔(21)之內緣面設有相對該滾動溝(11)之滾動槽(211),該滾動溝(11)與滾動槽(211)係構成一負荷路徑(90),且該穿孔(21)之兩端分別設有一安裝孔(22),該安裝孔(22)之直徑(D2)係大於該穿孔(21)之直徑(D1)且兩者相互連通,該本體(2)更設有數量相對該滾動槽(211)且平行於該滾動槽(211)設 置之迴流孔(24),該迴流孔(24)之兩端係與該安裝孔(22)相連通,該迴流孔(24)之截面係為一圓形,也就是說該迴流孔(24)徑方向為封閉型態;兩該迴流件(3)係分別容置於兩該安裝孔(22),該迴流件(3)係設有數量相對該滾動槽(211)之迴流道(31),該迴流道(31)輪廓係為一U形,其兩端係分別與該負荷路徑(90)及迴流孔(24)銜接而構成一循環路徑(100);該複數滾動件(4)係設置於該循環路徑(100)。 1 to 3 are a preferred embodiment of the present invention. The present invention is a linear drive ball spline device comprising: a spline shaft (1) extending in one direction to a long length. a strip structure defining the extending direction as an axial direction (X), the surface of the spline shaft (1) is provided with a plurality of rolling grooves (11) extending along the axial direction (X); a moving body comprising the body (2), two reflow members (3) and a plurality of rolling members (4), the body (2) is provided with a perforation (21) for the spline shaft (1), the inner edge of the perforation (21) The surface is provided with a rolling groove (211) opposite to the rolling groove (11). The rolling groove (11) and the rolling groove (211) form a load path (90), and one end of the through hole (21) is respectively provided with a a mounting hole (22) having a diameter (D2) larger than a diameter (D1) of the through hole (21) and communicating with each other, the body (2) being further provided with a number relative to the rolling groove (211) And parallel to the rolling groove (211) a return hole (24) is disposed, and both ends of the return hole (24) are in communication with the mounting hole (22), and the return hole (24) has a circular cross section, that is, the return hole (24) The radial direction is a closed state; the two returning members (3) are respectively accommodated in the two mounting holes (22), and the returning member (3) is provided with a return passage (31) opposite to the rolling groove (211). The return channel (31) has a U-shaped profile, and its two ends are respectively coupled to the load path (90) and the return hole (24) to form a circulation path (100); the plurality of rolling elements (4) The system is set in the loop path (100).
本實施例為了固定該迴流件(3),係於該安裝孔(22)之內緣面凹陷設置有一環形之固定槽(23),當該迴流件(3)設置該安裝孔(22)時,該迴流件(3)之端面(32)係與該固定槽(23)之內側槽壁(231)相切設置,再藉由一固定件(5)設置於該固定槽(23)後,該固定件(5)係抵觸於該迴流件(3)之端面(32),以限制該迴流件(3)之軸方向(X)自由度,而該固定件(5)於本實施例係為一由金屬製成之C型扣,藉此,該迴流件(3)於任意方向皆由金屬材質包覆住,請配合第二圖及第三圖所示,該迴流件(3)之徑方向係由該安裝孔(22)包覆,而該迴流件(3)之軸方向(X)一端係由該固定件(5)部分包覆該端面(32),其包覆範圍超過該端面(32)的二分之一為最佳,另一端係面向該穿孔(21)設置,如此可避免滾珠花鍵裝置因不當使用等因素,而造成滾動件(4)衝擊該迴流道(31)之力道過大時,造成該迴流件(3)破裂損壞(註:因為該迴流件大部分皆由塑膠射出成型製造),此時因為該迴流件(3)周圍有金屬阻擋即可避免 滾動件(4)掉出該迴流道(31),即可避免安裝該滾珠花鍵裝置之設備,因為滾動件(4)完全脫離該本體(2)與花鍵軸(1)而使設備失去原本限制的自由度,而造成設備之相關部件相互撞擊而損壞,故本發明藉由該迴流件(3)的特殊固定結構之設計,因此具有主動防止爆珠(指滾動件)的安全效果以避免更大的損害發生。 In this embodiment, in order to fix the reflow member (3), an annular fixing groove (23) is recessed on the inner edge surface of the mounting hole (22), and when the reflow member (3) is provided with the mounting hole (22) The end surface (32) of the reflow member (3) is disposed tangentially to the inner groove wall (231) of the fixing groove (23), and is disposed on the fixing groove (23) by a fixing member (5). The fixing member (5) is in contact with the end surface (32) of the reflow member (3) to limit the axial direction (X) degree of freedom of the reflow member (3), and the fixing member (5) is in the embodiment The C-shaped buckle made of metal, whereby the reflowing member (3) is covered by a metal material in any direction, please cooperate with the second and third figures, the reflowing member (3) The radial direction is covered by the mounting hole (22), and one end of the axial direction (X) of the reflow member (3) is partially covered by the fixing member (5), and the covering range thereof exceeds the One-half of the end face (32) is optimal, and the other end is disposed facing the perforation (21), so that the ball spline device can be prevented from being impacted by the rolling member (4) due to improper use and the like (31). When the force is too large, the reflow member (3) is broken and damaged. : Because most of the reflow parts are made by plastic injection molding, it can be avoided because there is metal blocking around the reflow part (3). When the rolling member (4) falls out of the return passage (31), the device for mounting the ball spline device can be avoided, because the rolling member (4) completely disengages from the body (2) and the spline shaft (1), so that the device is lost. The originally limited degree of freedom causes the related components of the device to collide with each other and is damaged. Therefore, the present invention has the special fixing structure of the reflowing member (3), thereby having the safety effect of actively preventing the explosion of the bead (referring to the rolling member). Avoid bigger damage.
再者,請參閱第三圖至第七圖所示,為使該滾動件(4)於該循環路徑(100)運行時獲得較佳的順暢度,故本發明將該迴流道(31)區分為四段,該四段分別依序銜接為爬升段(A)、第一迴轉段(B)、第二迴轉段(C)及銜接段(D),其中,該爬升段(A)係與負荷路徑(90)銜接,該銜接段(D)係與迴流孔(24)銜接;請參閱第七圖所示,該爬升段(A)係部分容設於該滾動溝(11),該爬升段(A)係具有一爬升高度(H)及爬升長度(C),該爬升高度(H)係小於該爬升長度(C),且該爬升長度(C)係符合此關係式:0.25倍滾動件之直徑≦爬升長度(C)≦0.5倍滾動件之直徑;該第一迴轉段(B)與第二迴轉段(C)係構成一迴轉段,該迴轉段之內輪廓的半徑(R3)係符合此關係式:0.5倍滾動件之直徑≦內輪廓的半徑(R3)≦滾動件之直徑,而該迴流道(31)之寬度(U)係大於該滾動件(4)之直徑。 Furthermore, referring to the third to seventh figures, in order to obtain better smoothness when the rolling element (4) is operated in the circulation path (100), the present invention distinguishes the return path (31). For the fourth section, the four sections are sequentially connected to the climbing section (A), the first turning section (B), the second turning section (C) and the connecting section (D), wherein the climbing section (A) is The load path (90) is engaged, and the connecting section (D) is engaged with the return hole (24); as shown in the seventh figure, the climbing section (A) is partially accommodated in the rolling groove (11), and the climbing Segment (A) has a climb height (H) and a climb length (C), the climb height (H) is less than the climb length (C), and the climb length (C) conforms to the relationship: 0.25 times rolling The diameter of the piece ≦ the climbing length (C) ≦ 0.5 times the diameter of the rolling piece; the first turning section (B) and the second turning section (C) form a turning section, the radius of the contour of the turning section (R3) It is in accordance with this relationship: 0.5 times the diameter of the rolling member, the radius of the inner contour (R3), the diameter of the rolling member, and the width (U) of the return passage (31) is larger than the diameter of the rolling member (4).
請參閱第六圖,該第一迴轉段(B)與第二迴轉段(C)由軸方向(X)觀之,該第一迴轉段(B)與第二迴轉段(C)之底部輪廓係分別由第一圓弧段(B1)及第二圓弧段(C1)相互相切銜接構成,其具有一相切點(Q),該第一圓弧段(B1 )與第二圓弧段(C1)之圓心(B2、C2)係相異、且該第一圓弧段(B1)之長度係符合此關係式:0.5倍第二圓弧段(C1)的長度<第一圓弧段(B1)之長度<0.8倍之第二圓弧段(C1)的長度【註:滾動件(4)至第一迴轉段(B)之前段時仍繼續爬升,故該第一圓弧段(B1)之長度必須大於第二圓弧段(C1)之長度,才能讓第一迴轉段(B)之前段爬升幅度較為平緩,而讓滾動件(4)順暢運行至第二迴轉段(C),而獲得較平順的滾動件(4)之迴轉路徑(T)】、以及該第一圓弧段(B1)之半徑(R1)係小於該第二圓弧段(C1)之半徑(R2);而本發明藉由上述的路徑設計,特別於滾動件(4)脫離該滾動溝(11)時所需爬升高度的設計,將其爬升高度分散至該爬升段(A)及第一迴轉段(B)之前段(前段之定義:從爬升段與第一迴轉段銜接點起算至小於第一迴轉段之總長度的二分之一之範圍),讓滾動件(4)於爬升段(A)的爬升高度相較以往設計低,相對亦降低了其爬升的阻力,而使滾動件(4)脫離滾動溝(11)時能運行順暢。 Referring to the sixth figure, the first turning section (B) and the second turning section (C) are viewed from the axial direction (X), and the bottom sections of the first turning section (B) and the second turning section (C) The first arc segment (B1) and the second arc segment (C1) are respectively tangentially connected to each other, and have a tangent point (Q), and the first arc segment (B1) ) is different from the center (B2, C2) of the second circular arc segment (C1), and the length of the first circular arc segment (B1) conforms to the relationship: 0.5 times the second circular arc segment (C1) Length < Length of the first arc segment (B1) <0.8 times the length of the second arc segment (C1) [Note: The rolling member (4) continues to climb in the previous segment of the first segment (B), so The length of the first circular arc segment (B1) must be greater than the length of the second circular arc segment (C1) in order to make the climbing portion of the first rotating segment (B) relatively gentle, and let the rolling member (4) smoothly run to The second turning section (C) obtains a smoother rolling path (T) of the rolling element (4), and the radius (R1) of the first circular section (B1) is smaller than the second circular section ( C1) radius (R2); and the present invention is designed by the above-mentioned path, in particular, the design of the climbing height required when the rolling element (4) is detached from the rolling groove (11), and the creeping height is dispersed to the climbing section ( A) and the first section of the first turning section (B) (the definition of the preceding paragraph: from the junction of the climbing section and the first turning section to less than one-half of the total length of the first turning section), let the rolling elements ( 4) The climbing height of the climbing section (A) is higher than in the past Low gauge, also reducing its relative resistance to climbing, the rolling elements (4) run out smoothly while rolling groove (11).
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。 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.
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。 The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the invention. category.
1‧‧‧花鍵軸 1‧‧‧ Splined shaft
11‧‧‧滾動溝 11‧‧‧ rolling groove
2‧‧‧本體 2‧‧‧ Ontology
21‧‧‧穿孔 21‧‧‧Perforation
211‧‧‧滾動槽 211‧‧‧ rolling groove
22‧‧‧安裝孔 22‧‧‧Installation holes
23‧‧‧固定槽 23‧‧‧fixed slot
231‧‧‧內側槽壁 231‧‧‧Inside groove wall
24‧‧‧迴流孔 24‧‧‧Return hole
3‧‧‧迴流件 3‧‧‧Return parts
31‧‧‧迴流道 31‧‧‧Return
32‧‧‧端面 32‧‧‧ end face
90‧‧‧負荷路徑 90‧‧‧Load path
100‧‧‧循環路徑 100‧‧‧Circular path
X‧‧‧軸方向 X‧‧‧axis direction
4‧‧‧滾動件 4‧‧‧Rolling parts
5‧‧‧固定件 5‧‧‧Fixed parts
A‧‧‧爬升段 A‧‧‧ climbing section
D1‧‧‧穿孔之直徑 D1‧‧‧ diameter of perforation
D2‧‧‧安裝孔之直徑 D2‧‧‧ diameter of mounting hole
Claims (2)
Priority Applications (1)
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TW102131134A TWI512215B (en) | 2013-08-29 | 2013-08-29 | Linear drive ball spline device |
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TW102131134A TWI512215B (en) | 2013-08-29 | 2013-08-29 | Linear drive ball spline device |
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TW201508192A TW201508192A (en) | 2015-03-01 |
TWI512215B true TWI512215B (en) | 2015-12-11 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3552806A (en) * | 1968-11-08 | 1971-01-05 | Weasler Engineering & Mfg Co I | Full recirculating linear ball bearings with shaft telescoping while transmitting torque |
JPS5597518A (en) * | 1979-01-20 | 1980-07-24 | Hiroshi Teramachi | Endless sliding ball spline bearing |
JPS56120817A (en) * | 1980-02-25 | 1981-09-22 | Hiroshi Teramachi | Boundlessly sliding ball spline bearing |
JPS5653143Y2 (en) * | 1977-09-06 | 1981-12-11 | ||
JPS61266822A (en) * | 1985-05-20 | 1986-11-26 | Nippon Thompson Co Ltd | Ball spline bearing |
JPS62237113A (en) * | 1986-04-05 | 1987-10-17 | Nippon Thompson Co Ltd | Ball spline bearing |
-
2013
- 2013-08-29 TW TW102131134A patent/TWI512215B/en active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3552806A (en) * | 1968-11-08 | 1971-01-05 | Weasler Engineering & Mfg Co I | Full recirculating linear ball bearings with shaft telescoping while transmitting torque |
JPS5653143Y2 (en) * | 1977-09-06 | 1981-12-11 | ||
JPS5597518A (en) * | 1979-01-20 | 1980-07-24 | Hiroshi Teramachi | Endless sliding ball spline bearing |
JPS56120817A (en) * | 1980-02-25 | 1981-09-22 | Hiroshi Teramachi | Boundlessly sliding ball spline bearing |
JPS61266822A (en) * | 1985-05-20 | 1986-11-26 | Nippon Thompson Co Ltd | Ball spline bearing |
JPS62237113A (en) * | 1986-04-05 | 1987-10-17 | Nippon Thompson Co Ltd | Ball spline bearing |
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