TW201326615A - Tangential external circulation type rolling balls screw rod - Google Patents
Tangential external circulation type rolling balls screw rod Download PDFInfo
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- TW201326615A TW201326615A TW100149453A TW100149453A TW201326615A TW 201326615 A TW201326615 A TW 201326615A TW 100149453 A TW100149453 A TW 100149453A TW 100149453 A TW100149453 A TW 100149453A TW 201326615 A TW201326615 A TW 201326615A
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Abstract
Description
本發明係為一種線性傳動元件，尤指一種切線外循環式滾珠螺桿。
The invention is a linear transmission element, in particular a tangentially recirculating ball screw.
請參閱圖一至圖五所示，係為目前習知所使用的切線外循環式滾珠螺桿，該切線外循環式滾珠螺桿係包含：一螺桿（4），其外緣面設有螺旋狀之滾動溝（41），一螺帽（1），其設有一供該螺桿穿（4）設之通孔（11），該通孔（11）之內緣面設有相對該滾動溝（41）之滾動槽（111），該滾動溝（41）與滾動槽（111）係構成一負荷路徑，於該螺帽（1）之外表面係設有複數個與該通孔（11）連通之安裝孔（12），及複數個螺絲孔（13），該安裝孔（12）係與該滾動槽（111）相銜接，且於該銜接處係鄰設有一承靠面（121）；至少一個迴流元件（2），該迴流元件（2）係為ㄇ字型，該ㄇ字型之兩端係定義為腳部（A），而兩該腳部（A）之間係定義為銜接部（B），兩該腳部（A）係分別插設於該安裝孔（12），而該銜接部（B）係靠設於該螺帽（1）之外緣面，該迴流元件（2）係設有一迴流道（23），該迴流道（23）係貫通兩該腳部（A）及銜接部（B），且該迴流道（23）之兩端係與該負荷路徑相連接並為切線式迴流路徑設計，而由圖一及圖二可得知，該迴流元件係由兩件構件（22、21）組成，分為兩件式主要是方便製造，兩該構件（22、21）係分別設有半迴流道（222、211），兩該半迴流道（222、211）係構成該迴流道（23），另，該迴流元件（2）係設有相對該螺絲孔（13）的穿孔（221），該穿孔（221）係供複數螺絲（3）穿設後，該螺絲（3）係與該螺絲孔（13）螺合鎖固，使該迴流元件（2）固定於該螺帽（1）。
然，此種切線外循環式滾珠螺桿的結構設計並無法適用於低導程的負荷路徑（由滾動溝(41)與滾動槽（111）所構成），【註：所謂低導程的意思是負荷路徑的間距小，換句話說，就是位於相鄰滾動溝(41)或滾動槽（111）之間的部位（業界通常俗稱：牙峰）之軸方向（X）厚度較小，而低導程的牙峰之軸方向（X）厚度就會比高導程牙峰之軸方向（X）厚度小】，因為該安裝孔（12）目前設計為一橢圓形孔，加工完成後會與滾動槽（111）產生干涉(請參閱圖二及圖三)，而使得與該安裝孔（12）銜接的滾動槽（111）兩側產生破損（R），也就是業界俗稱之破牙，造成該螺帽（1）無法使用而須報廢，這也是目前業界於製造低導程之切線外循環式滾珠螺桿所遇到的難題，故如果有客戶欲購買低導程的切線外循環式滾珠螺桿，都會建議客戶選用其它的循環方式（例如：內循環等），但因為切線外循環具有內循環無法達到的無衝擊式迴流路徑優點，可使滾珠螺桿的運轉噪音降低、允許運轉轉速較內循環大幅提升，因此有些客戶也是因為看重其優勢才會選定切線外循環式滾珠螺桿使用，故如何使切線外循環式滾珠螺桿應用於低導程的規格，為目前業界積極改善開發的重點。
Referring to FIG. 1 to FIG. 5, it is a conventional tangentially-circulating ball screw used in the prior art. The tangential outer-circulating ball screw system comprises: a screw (4) having a spiral rolling on the outer edge surface thereof. a groove (41), a nut (1), which is provided with a through hole (11) for the screw thread (4), and an inner edge surface of the through hole (11) is provided opposite to the rolling groove (41) a rolling groove (111), the rolling groove (41) and the rolling groove (111) form a load path, and a plurality of mounting holes communicating with the through hole (11) are disposed on the outer surface of the nut (1) (12), and a plurality of screw holes (13), the mounting hole (12) is engaged with the rolling groove (111), and a bearing surface (121) is adjacent to the connecting portion; at least one reflow element (2) The reflow element (2) is a U-shape, the two ends of the U-shape are defined as a foot (A), and the two (A) are defined as an engagement (B) The two legs (A) are respectively inserted into the mounting hole (12), and the engaging portion (B) is disposed on the outer edge surface of the nut (1). The component (2) is provided with a return passage (23) which penetrates the two leg portions (A) and the engaging portion (B), and both ends of the return passage (23) are coupled to the load path Connected and designed for the tangential reflow path, as can be seen from Figure 1 and Figure 2, the reflow element is composed of two parts (22, 21), which are mainly divided into two parts, which are mainly convenient for manufacturing, and the two parts ( 22, 21) are respectively provided with a half return flow path (222, 211), the two return flow paths (222, 211) constitute the return flow path (23), and the reflow element (2) is provided with the opposite screw a hole (221) of the hole (13), the hole (221) is provided for the plurality of screws (3) to be threaded, and the screw (3) is screwed with the screw hole (13) to lock the return element (2) ) is fixed to the nut (1).
However, the structural design of such a tangentially-circulating ball screw cannot be applied to a low-lead load path (consisting of a rolling groove (41) and a rolling groove (111)). [Note: The so-called low lead means The pitch of the load path is small, in other words, the portion between the adjacent rolling groove (41) or the rolling groove (111) (commonly known as the tooth peak in the industry) has a small axial direction (X) and a low guide. The axial direction (X) of the tooth peak of the process is smaller than the axial direction (X) of the high lead tooth peak, because the mounting hole (12) is currently designed as an elliptical hole, and the groove is formed after the machining is completed ( 111) Interference (see Fig. 2 and Fig. 3) is generated, so that the two sides of the rolling groove (111) which is engaged with the mounting hole (12) are damaged (R), which is commonly known as broken teeth in the industry, resulting in the nut (1) It cannot be used and must be scrapped. This is also a problem encountered by the industry in the manufacture of low-lead tangentially-circulating ball screws. Therefore, if a customer wants to purchase a low-lead tangentially-circulating ball screw, it is recommended. The customer chooses another cycle (eg: Internal circulation, etc.), but because the tangential circulation has the advantage of the non-impact recirculation path that cannot be achieved by the internal circulation, the running noise of the ball screw can be reduced, and the operating speed can be greatly improved compared with the internal circulation. Therefore, some customers also value their advantages. The use of the tangentially-circulating ball screw will be used. Therefore, how to apply the tangentially-circulating ball screw to the low-lead specification is the focus of the industry's active improvement.
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，本發明之目的在於，研發出低導程之切線外循環式滾珠螺桿。
為達上述之目的，本發明係為一種切線外循環式滾珠螺桿，係包含：
一螺桿，其外緣面設有螺旋狀之滾動溝；
一螺帽，其設有一供該螺桿穿設之通孔，該通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，於該螺帽之外表面係設有複數個與該通孔連通之安裝孔；
一迴流元件，該迴流元件之外型概呈ㄇ字型，該ㄇ字型之兩端係定義為腳部，而兩該腳部之間係定義為銜接部，兩該腳部係分別插設於該安裝孔，而該銜接部係靠設於該螺帽之外緣面，該迴流元件係設有一迴流道並為切線式迴流路徑設計，該迴流道係貫通兩該腳部及銜接部，且該迴流道之兩端係與該負荷路徑相連接；
其中，該安裝孔係包含：第一容孔及第二容孔；該第一容孔及第二容孔係相連通，該第一容孔之寬度係大於第二容孔之寬度，該第一容孔之深度係小於該第二容孔之深度。
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, the object of the present invention is to develop a low lead tangentially recirculating ball screw.
For the above purposes, the present invention is a tangentially recirculating ball screw comprising:
a screw having a spiral rolling groove on the outer edge surface thereof;
a nut having a through hole through which the screw is disposed, the inner edge 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 load path, and the nut is formed in the nut The outer surface is provided with a plurality of mounting holes communicating with the through holes;
a reflow element, the reflow element has a shape of a U-shape, the two ends of the U-shape are defined as a foot portion, and the two legs are defined as an engagement portion, and the two legs are respectively inserted In the mounting hole, the engaging portion is disposed on the outer peripheral surface of the nut, and the reflowing member is provided with a return path and is designed for a tangential return path, and the return path passes through the two legs and the connecting portion. And the two ends of the return channel are connected to the load path;
The mounting hole includes: a first hole and a second hole; the first hole and the second hole are connected to each other, and the width of the first hole is greater than the width of the second hole, the first The depth of a bore is less than the depth of the second bore.
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：
圖六係為本發明之切線外循環式滾珠螺桿的分解圖。
圖七係為本發明之切線外循環式滾珠螺桿的分解圖，另一視角。
圖八係為本發明之切線外循環式滾珠螺桿的組合圖。
圖九係為本發明之螺帽的徑方向剖切之剖視圖，係以端視圖觀之，主要表示第一容孔與第二容孔之深度不同。
圖十係為本發明之迴流元件組合於螺帽，且以徑方向剖切之剖視圖，係以端視圖觀之。
圖十一係為本發明之迴流元件組合於螺帽，且以徑方向剖切之剖視圖，係以端視圖觀之，主要顯示安裝孔之承靠面與迴流元件之抵靠面的配合。
圖十二係為本發明之螺帽的軸方向剖切之剖視圖，主要顯示安裝孔之承靠面與迴流元件之抵靠面的配合。
請參閱六至圖十二所示，係為本發明一較佳實施例，本發明係為一種切線外循環式滾珠螺桿，係包含：
一螺桿（4），其外緣面設有螺旋狀之滾動溝（41）；
一螺帽（1），其設有一供該螺桿（4）穿設之通孔（11），該通孔（11）之內緣面設有相對該滾動溝（41）之滾動槽（111），該滾動溝（41）與滾動槽（111）係構成一負荷路徑，該負荷路徑係容設複數滾動體（未顯示），於該螺帽（1）之外表面係設有複數個與該通孔（11）連通之安裝孔（12），及複數個螺絲孔（13），該安裝孔（12）係包含：第一容孔（121）及第二容孔（122）；該第一容孔（121）及第二容孔（122）係相連通，該第一容孔（121）之寬度（D）係大於第二容孔（122）之寬度（d），該第一容孔（121）之深度（H）係小於該第二容孔（122）之深度（h），如圖六及圖九所示；且該第一容孔（121）係設有至少一承靠面（123），本實施例係為兩承靠面（123）；
一迴流元件（2），該迴流元件（2）係設有兩腳部(A)，而兩該腳部（A）之間係係由銜接部（B）銜接，兩該腳部（A）係分別插設於該安裝孔（12），且兩該腳部（A）分別由相對容設於該第一容孔（121）的第一階級部（222）及容設於該第二容孔（122）的第二階級部（223）所構成，該第一階級部（222）之外型輪廓於本實施例係相對該第一容孔（121）之內輪廓設置，該第二階級部（223）之外型輪廓於本實施例係相對該第二容孔（122）之內輪廓設置，如此藉由第一階級部（222）及第一容孔（121）的密合及第二階級部（223）及第二容孔（122）的密合以防止異物粉塵進入該通孔；而本實施例之迴流元件（2）係由第一構件（22）及第二構件（21）組成，分為兩件式主要是方便製造，該第一構件（22）及第二構件（21）係分別設有一半迴流道（225、211），兩該半迴流道（225、211）係構成一迴流道（23），該迴流道（23）係貫通兩該腳部（A）及銜接部（B），且該迴流道（23）之兩端與該負荷路徑係沿負荷路徑之切線方向相銜接，且該迴流元件（2）於該迴流道（23）之兩端分別設有一導引部（24），該導引部（24）係朝該滾動溝凸伸設置，且容設於該滾動溝中，用以引導複數該滾動體進入該迴流道（23），該第二構件(21)係設有相對該該承靠面（123）之第一抵靠面（212），該第一階級部（222）係設有相對該承靠面（123）之第二抵靠面（224），該第一抵靠面（212）與第二抵靠面（224）於本實施例相互銜接構成一抵靠面（Y），而該抵靠面（Y）係抵靠於該承靠面（123），藉由該承靠面（123）與抵靠面（Y）的接觸（請參閱圖十一及十二所示），使兩該腳部（A）能更穩固的設置於該安裝孔（12），而該銜接部（B）係靠設於該螺帽（1）之外緣面；另，該迴流元件（2）係設有相對該螺絲孔（13）的穿孔（221），該穿孔（221）係供複數螺絲（3）穿設後，該螺絲（3）係與該螺絲孔（13）螺合鎖固，使該迴流元件（2）固定於該螺帽（1）；而前述該穿孔（221）與該第一階級部（222）及該第二階級部（223）係設於該第一構件（22）。
以上說明各元件之結構及相互組態，以下說明本發明之螺帽及迴流元件之設計原理及所達成之功效：
請參閱圖六至圖十二所示，目前習用的安裝孔設計為相同尺寸的孔徑，故安裝孔與滾動槽會產生干涉；而本發明之迴流元件（2）之腳部（A）係設為第一階級部（222）與第二階級部（223），故設計該第一容孔（121）之寬度（D）係大於第二容孔（122）之寬度（d），該第一容孔（121）之深度（H）係小於該第二容孔（122）之深度（h），藉由該安裝孔（12）以多階級的設計（本實施例係為兩階級，但因應空間上的限制也可以設計為兩階級以上的安裝孔）與該迴流元件（2）之腳部（A）之第一階級部（222）與第二階級部（223）相配合，使該安裝孔（12）不會與滾動槽（11）產生干涉，以達成將切線外循環式滾珠螺桿應用於低導程之規格的目的。而於加工該安裝孔（12）時，只需藉由兩種不同直徑的端铣刀即可完成加工，較大直徑之端铣刀係用來加工該第一容孔（121），較小直徑則用來加工第二容孔（122）。
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 6 is an exploded view of the tangentially-circulating ball screw of the present invention.
Figure 7 is an exploded view of the tangentially-circulating ball screw of the present invention, and another perspective.
Figure 8 is a combination view of the tangentially-circulating ball screw of the present invention.
Figure 9 is a cross-sectional view of the nut of the present invention taken along the radial direction, which is viewed from an end view, mainly showing the difference between the depth of the first bore and the second bore.
Figure 10 is a cross-sectional view of the reflow element of the present invention combined with a nut and cut in the radial direction, viewed from an end view.
Figure 11 is a cross-sectional view of the reflow element of the present invention combined with the nut and cut in the radial direction. The end view is mainly viewed to show the cooperation of the bearing surface of the mounting hole and the abutting surface of the reflow element.
Figure 12 is a cross-sectional view of the nut of the present invention taken along the axial direction, mainly showing the cooperation of the bearing surface of the mounting hole and the abutting surface of the return element.
Referring to FIG. 6 to FIG. 12, which is a preferred embodiment of the present invention, the present invention is a tangentially-circulating ball screw, which comprises:
a screw (4) having a spiral rolling groove (41) on its outer edge surface;
a nut (1) is provided with a through hole (11) through which the screw (4) is bored, and an inner edge surface of the through hole (11) is provided with a rolling groove (111) opposite to the rolling groove (41) The rolling groove (41) and the rolling groove (111) form a load path, and the load path accommodates a plurality of rolling elements (not shown), and the surface of the nut (1) is provided with a plurality of a through hole (11) communicating with the mounting hole (12), and a plurality of screw holes (13), the mounting hole (12) comprising: a first hole (121) and a second hole (122); The aperture (121) and the second aperture (122) are in communication, and the width (D) of the first aperture (121) is greater than the width (d) of the second aperture (122), the first aperture The depth (H) of (121) is smaller than the depth (h) of the second hole (122), as shown in FIG. 6 and FIG. 9; and the first hole (121) is provided with at least one bearing surface. (123), this embodiment is a two bearing surface (123);
a reflow element (2), the reflow element (2) is provided with two legs (A), and the two systems (A) are connected by the connection portion (B), and the two legs (A) Each of the leg portions (A) is respectively disposed in the first step portion (222) of the first hole (121) and is accommodated in the second hole. a second step portion (223) of the hole (122), the outer contour of the first step portion (222) being disposed in the inner contour of the first bore (121) in the embodiment, the second step The outer contour of the portion (223) is disposed in the inner contour of the second bore (122) in this embodiment, such that the first step portion (222) and the first bore (121) are in close contact with each other. The second step portion (223) and the second hole (122) are tightly sealed to prevent foreign matter dust from entering the through hole; and the reflow member (2) of the embodiment is composed of the first member (22) and the second member (21) The composition is divided into two parts, which are mainly convenient for manufacturing, and the first member (22) and the second member (21) are respectively provided with half return passages (225, 211), and the two half-reflows are respectively (225, 211) constitutes a return passage (23) which penetrates the two leg portions (A) and the engaging portion (B), and both ends of the return passage (23) and the load path The retracement direction of the load path is connected, and the reflow element (2) is respectively provided with a guiding portion (24) at both ends of the return channel (23), and the guiding portion (24) is convex toward the rolling groove And extending in the rolling groove for guiding a plurality of rolling elements into the return passage (23), wherein the second member (21) is provided with a first offset relative to the bearing surface (123) The first step portion (222) is provided with a second abutting surface (224) opposite to the bearing surface (123), the first abutting surface (212) and the second abutting surface. (224) in the embodiment, abutting against each other to form an abutting surface (Y), and the abutting surface (Y) abuts against the bearing surface (123), by the bearing surface (123) and abutting The contact of the face (Y) (see Figures 11 and 12) allows the two legs (A) to be more securely placed in the mounting hole (12), and the engaging portion (B) is hinged In this The outer surface of the cap (1); further, the reflow element (2) is provided with a through hole (221) opposite to the screw hole (13), the perforation (221) is for the plurality of screws (3) to be worn, The screw (3) is screwed with the screw hole (13) to fix the reflow element (2) to the nut (1); and the through hole (221) and the first step portion (222) The second step portion (223) is provided to the first member (22).
The structure and mutual configuration of each component are described above. The design principle and the achieved effect of the nut and reflow component of the present invention are described below:
Referring to FIG. 6 to FIG. 12, the conventional mounting holes are designed to have the same size of the aperture, so that the mounting holes and the rolling grooves interfere; and the foot (A) of the reflow element (2) of the present invention is provided. The first class portion (222) and the second class portion (223) are designed such that the width (D) of the first hole (121) is greater than the width (d) of the second hole (122), the first The depth (H) of the hole (121) is smaller than the depth (h) of the second hole (122), and the mounting hole (12) has a multi-class design (this embodiment is two-stage, but the corresponding The space limitation can also be designed as a mounting hole of two or more levels) with the first step portion (222) of the leg portion (A) of the reflow element (2) and the second step portion (223), so that the mounting The hole (12) does not interfere with the rolling groove (11) to achieve the purpose of applying the tangential outer circulating ball screw to the specification of the low lead. When the mounting hole (12) is machined, the machining can be completed by only two end mills of different diameters, and the larger diameter end mill is used to machine the first hole (121), which is smaller. The diameter is used to machine the second bore (122).
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)．．．螺帽(1). . . Nut
(11)．．．通孔(11). . . Through hole
(111)．．．滾動槽(111). . . Rolling groove
(12)．．．安裝孔(12). . . Mounting holes
(121)．．．承靠面(121). . . Bearing surface
(13)．．．螺絲孔(13). . . screw hole
(2)．．．迴流元件(2). . . Reflow element
(22、21)．．．構件(22, 21). . . member
(221)．．．穿孔(221). . . perforation
(222、211)．．．半迴流道(222, 211). . . Semi-return
(3)．．．螺絲(3). . . Screw
(4)．．．螺桿(4). . . Screw
(41)．．．滾動溝(41). . . Rolling groove
(A)．．．腳部(A). . . Foot
(B)．．．銜接部(B). . . Connection
(R)．．．破損(R). . . damaged
(X)．．．軸方向(X). . . Axis direction
(1)．．．螺帽(1). . . Nut
(11)．．．通孔(11). . . Through hole
(111)．．．滾動槽(111). . . Rolling groove
(12)．．．安裝孔(12). . . Mounting holes
(121)．．．第一容孔(121). . . First hole
(122)．．．第二容孔(122). . . Second hole
(123)．．．承靠面(123). . . Bearing surface
(13)．．．螺絲孔(13). . . screw hole
(2)．．．迴流元件(2). . . Reflow element
(22)．．．第一構件(twenty two). . . First member
(211)．．．半迴流道(211). . . Semi-return
(212)．．．第一抵靠面(212). . . First abutment
(21)．．．第二構件(twenty one). . . Second member
(221)．．．穿孔(221). . . perforation
(222)．．．第一階級部(222). . . First class
(223)．．．第二階級部(223). . . Second class
(224)．．．第二抵靠面(224). . . Second abutment
(225)．．．半迴流道(225). . . Semi-return
(23)．．．迴流道(twenty three). . . Return channel
(24)．．．導引部(twenty four). . . Guide
(3)．．．螺絲(3). . . Screw
(4)．．．螺桿(4). . . Screw
(41)．．．滾動溝(41). . . Rolling groove
(H、h)．．．深度(H, h). . . depth
(D、d)．．．寬度(D, d). . . width
(X)．．．軸方向(X). . . Axis direction
(A)．．．腳部(A). . . Foot
(B)．．．銜接部(B). . . Connection
(Y)．．．抵靠面(Y). . . Abutment
圖一係為習知技術之切線外循環式滾珠螺桿的分解圖。
圖二係為習知技術之切線外循環式滾珠螺桿的分解圖，另一視角。
圖三係為習知技術之切線外循環式滾珠螺桿的組合圖。
圖四係為習知技術之螺帽的徑方向剖切之剖視圖，係以端視圖觀之。
圖五係為習知技術之迴流元件組合於螺帽，且以徑方向剖切之剖視圖，係以端視圖觀之。
圖六係為本發明之切線外循環式滾珠螺桿的分解圖。
圖七係為本發明之切線外循環式滾珠螺桿的分解圖，另一視角。
圖八係為本發明之切線外循環式滾珠螺桿的組合圖。
圖九係為本發明之螺帽的徑方向剖切之剖視圖，係以端視圖觀之，主要表示第一容孔與第二容孔之深度不同。
圖十係為本發明之迴流元件組合於螺帽，且以徑方向剖切之剖視圖，係以端視圖觀之。
圖十一係為本發明之迴流元件組合於螺帽，且以徑方向剖切之剖視圖，係以端視圖觀之，主要顯示安裝孔之承靠面與迴流元件之抵靠面的配合。
圖十二係為本發明之螺帽的軸方向剖切之剖視圖，主要顯示安裝孔之承靠面與迴流元件之抵靠面的配合。
Figure 1 is an exploded view of a tangentially-circulating ball screw of the prior art.
Figure 2 is an exploded view of a prior art tangentially recirculating ball screw, another perspective.
Figure 3 is a combination of a tangentially recirculating ball screw of the prior art.
Figure 4 is a cross-sectional view taken along the radial direction of a conventionally known nut, viewed from an end view.
Figure 5 is a cross-sectional view of a reflow element of the prior art combined with a nut and cut in a radial direction, viewed from an end view.
Figure 6 is an exploded view of the tangentially-circulating ball screw of the present invention.
Figure 7 is an exploded view of the tangentially-circulating ball screw of the present invention, and another perspective.
Figure 8 is a combination view of the tangentially-circulating ball screw of the present invention.
Figure 9 is a cross-sectional view of the nut of the present invention taken along the radial direction, which is viewed from an end view, mainly showing the difference between the depth of the first bore and the second bore.
Figure 10 is a cross-sectional view of the reflow element of the present invention combined with a nut and cut in the radial direction, viewed from an end view.
Figure 11 is a cross-sectional view of the reflow element of the present invention combined with the nut and cut in the radial direction. The end view is mainly viewed to show the cooperation of the bearing surface of the mounting hole and the abutting surface of the reflow element.
Figure 12 is a cross-sectional view of the nut of the present invention taken along the axial direction, mainly showing the cooperation of the bearing surface of the mounting hole and the abutting surface of the return element.
(1)．．．螺帽(1). . . Nut
(11)．．．通孔(11). . . Through hole
(111)．．．滾動槽(111). . . Rolling groove
(12)．．．安裝孔(12). . . Mounting holes
(121)．．．第一容孔(121). . . First hole
(122)．．．第二容孔(122). . . Second hole
(13)．．．螺絲孔(13). . . screw hole
(2)．．．迴流元件(2). . . Reflow element
(22)．．．第一構件(twenty two). . . First member
(21)．．．第二構件(twenty one). . . Second member
(221)．．．穿孔(221). . . perforation
(211)．．．半迴流道(211). . . Semi-return
(3)．．．螺絲(3). . . Screw
(4)．．．螺桿(4). . . Screw
(41)．．．滾動溝(41). . . Rolling groove
(X)．．．軸方向(X). . . Axis direction
(D、d)．．．寬度(D, d). . . width
Claims (6)
一螺桿，其外緣面設有螺旋狀之滾動溝；
一螺帽，其設有一供該螺桿穿設之通孔，該通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，於該螺帽之外表面係設有複數個與該通孔連通之安裝孔；
一迴流元件，該迴流元件係設有兩腳部，而兩該腳部之間係係由銜接部銜接，兩該腳部係分別插設於該安裝孔，而該銜接部係靠設於該螺帽之外緣面，該迴流元件係設有一迴流道，該迴流道係貫通兩該腳部及銜接部，且該迴流道之兩端係與該負荷路徑相連接；
其中，該安裝孔係包含：第一容孔及第二容孔；該第一容孔及第二容孔係相連通，該第一容孔之寬度係大於第二容孔之寬度，該第一容孔之深度係小於該第二容孔之深度。A tangentially-circulating ball screw comprising:
a screw having a spiral rolling groove on the outer edge surface thereof;
a nut having a through hole through which the screw is disposed, the inner edge 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 load path, and the nut is formed in the nut The outer surface is provided with a plurality of mounting holes communicating with the through holes;
a reflow element, the reflow element is provided with two leg portions, and the two leg portions are connected by the connecting portion, and the two leg portions are respectively inserted into the mounting hole, and the connecting portion is disposed on the connecting portion a returning surface of the nut, the returning element is provided with a return passage, the return passage is through the two legs and the engaging portion, and both ends of the return passage are connected to the load path;
The mounting hole includes: a first hole and a second hole; the first hole and the second hole are connected to each other, and the width of the first hole is greater than the width of the second hole, the first The depth of a bore is less than the depth of the second bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100149453A TWI448632B (en) | 2011-12-29 | 2011-12-29 | Tangential outer ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100149453A TWI448632B (en) | 2011-12-29 | 2011-12-29 | Tangential outer ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201326615A true TW201326615A (en) | 2013-07-01 |
| TWI448632B TWI448632B (en) | 2014-08-11 |
Family
ID=49224885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100149453A TWI448632B (en) | 2011-12-29 | 2011-12-29 | Tangential outer ball screw |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI448632B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM354668U (en) * | 2008-10-29 | 2009-04-11 | Prec Motion Ind Inc | Assembling structure for small-pitch screw rod and nut, and recirculation cover |
| TWI350351B (en) * | 2008-12-08 | 2011-10-11 | Hiwin Tech Corp | Rolling chain circulation structure for ball screw |
| TWI352785B (en) * | 2008-12-12 | 2011-11-21 | Hiwin Tech Corp | Ball screw |
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2011
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI448632B (en) | 2014-08-11 |
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