TWI444542B - Rotary Ball Screw with Lubricated Structure - Google Patents
Rotary Ball Screw with Lubricated Structure Download PDFInfo
- Publication number
- TWI444542B TWI444542B TW100149462A TW100149462A TWI444542B TW I444542 B TWI444542 B TW I444542B TW 100149462 A TW100149462 A TW 100149462A TW 100149462 A TW100149462 A TW 100149462A TW I444542 B TWI444542 B TW I444542B
- Authority
- TW
- Taiwan
- Prior art keywords
- hole
- nut
- rolling groove
- rolling
- bearing ring
- Prior art date
Links
Landscapes
- Transmission Devices (AREA)
Description
本發明係為一種螺帽旋轉式滾珠螺桿，尤指一種具潤滑結構之螺帽旋轉式滾珠螺桿。
The invention relates to a nut rotating ball screw, in particular to a nut rotating ball screw with a lubricating structure.
螺帽旋轉式滾珠螺桿係將螺帽與軸承外環一體成型，該軸承外環係與工作平台固定，而動力馬達係藉由皮帶將動力傳送至螺帽，盡而使螺帽相對於螺桿轉動，將轉動扭矩轉換成軸向運動進而帶動工作平台，其主要為螺桿固定，因此沒有螺桿旋轉時的慣性力，並可選用較小驅動的馬達；其主要應用於半導體機械、木工機、搬送裝置等…，對於現今各種工業應用機具等重要性也不言可喻。
請參閱圖一係為一種習知螺帽旋轉式滾珠螺桿之潤滑結構，其中該螺帽旋轉式滾珠螺桿係包括：一螺桿（91）、一套合於螺桿（91）上之螺帽（92），該螺桿（91）、螺帽（92）在對合面設有相對應之螺紋溝（910）、內螺紋（920），並於螺紋溝（910）、內螺紋（920）中系列設置有滾珠（93），使螺帽（92）能以滾珠（93）囓合於螺桿（91），其主要在螺帽（92）外周安裝有一軸承（94），在實際使用時，其軸承（94）係組裝於一軸承座中，並使軸承座固設於所欲驅動之載台，而此載台上則相對設置有伺服馬達，該伺服馬達則以時規皮帶帶動螺帽（92），使螺帽（92）於軸承（94）及螺桿（91）間自轉，如此，即能驅動載台沿螺桿（91）中心以及線性軌道而移動至所需之位置。
該潤滑結構係於軸承外環（940）設置有一貫穿孔（941）來連接外部的潤滑裝置和軸承（94）內部，而螺帽（92）亦對應的設置有貫穿孔（921），使得外部潤滑裝置能將潤滑脂傳遞至螺帽（92）內，以達到潤滑螺桿（91）及滾珠（93）之目的，可是該潤滑方式有以下問題點：
其潤滑脂須填充軸承與螺帽之間的所有空間（M），方能將潤滑脂由該貫穿孔（921）持續性的流至該螺紋溝（910）、內螺紋（920），以便直接對承受應力之滾珠（93）進行潤滑，然而，該空間（M）區域較大，故潤滑油容易堆積於死角而變質，且又因螺帽（92）運轉時離心力的影響，該潤滑油不容易迅速的由該貫穿孔（921）流至該螺紋溝（910）、內螺紋（920），且該空間（M）與軸承（94）的滾動體（942）相連通，故潤滑脂容易將軸承（94）運轉時產生的汙垢或異物帶進該螺紋溝（910）、內螺紋（920）間，另外，亦容易造成該貫穿孔（921）阻塞而無法供潤滑脂流通，故針對以上問題點，習知技術誠有改進之必要。
The nut rotary ball screw integrally forms the nut with the outer ring of the bearing, the outer ring of the bearing is fixed to the working platform, and the power motor transmits the power to the nut by the belt, so that the nut rotates relative to the screw The rotary torque is converted into an axial movement to drive the working platform, which is mainly screw fixed, so there is no inertial force when the screw rotates, and a smaller driven motor can be selected; the main application is for semiconductor machinery, woodworking machines, and conveying devices. And so on, the importance of today's various industrial applications and tools is not to mention.
Please refer to FIG. 1 as a lubricating structure of a conventional nut rotating ball screw, wherein the nut rotary ball screw system comprises: a screw (91) and a set of nuts (92) attached to the screw (91). The screw (91) and the nut (92) are provided with corresponding thread grooves (910) and internal threads (920) on the mating surface, and are arranged in the thread groove (910) and the internal thread (920). There is a ball (93), so that the nut (92) can be engaged with the screw (91) by the ball (93), and a bearing (94) is mainly mounted on the outer periphery of the nut (92). In actual use, the bearing (94) The system is assembled in a bearing seat, and the bearing seat is fixed on the stage to be driven, and the stage is oppositely provided with a servo motor, and the servo motor drives the nut (92) with a timing belt. The nut (92) is rotated between the bearing (94) and the screw (91) so that the carriage can be driven to move to the desired position along the center of the screw (91) and the linear track.
The lubricating structure is such that the bearing outer ring (940) is provided with a permanent perforation (941) for connecting the external lubricating device and the bearing (94), and the nut (92) is correspondingly provided with a through hole (921), so that the outer portion The lubrication device can transfer the grease into the nut (92) to achieve the purpose of lubricating the screw (91) and the ball (93), but the lubrication method has the following problems:
The grease must fill all the space (M) between the bearing and the nut to continuously flow the grease from the through hole (921) to the thread groove (910) and the internal thread (920) for direct The ball (93) subjected to stress is lubricated. However, the space (M) area is large, so that the lubricating oil is likely to accumulate at the dead angle and deteriorate, and the lubricating oil is not affected by the centrifugal force when the nut (92) is operated. It is easy to quickly flow from the through hole (921) to the thread groove (910) and the internal thread (920), and the space (M) is in communication with the rolling element (942) of the bearing (94), so the grease is easy to be Dirt or foreign matter generated during the operation of the bearing (94) is carried between the thread groove (910) and the internal thread (920), and the through hole (921) is also likely to be blocked and the grease cannot be circulated, so the above problem is solved. Point, the know-how is necessary for 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，本發明目的在於，研發一種應用於螺帽旋轉式滾珠螺桿之潤滑結構能讓潤滑脂流動較無阻礙。
為達上述之目的，一種具潤滑結構之螺帽旋轉式滾珠螺桿，係包含：
一螺桿，其外緣設有螺旋狀之滾動溝；
一螺帽，係設有供該螺桿穿設之穿孔，該穿孔內緣係設有相對該滾動溝之滾動槽，該滾動溝及滾動槽係形成一第一負荷路徑，該第一負荷路徑係供複數第一滾動件容置，且該螺帽外緣設有兩外滾動溝，及位於兩該外滾動溝之間的兩間隔凸部，兩該間隔凸部之間係保持一間距設置，兩該間隔凸部間係設有一斜向油孔，該斜向油孔係傾斜一角度設置，該角度係約等於該第一負荷路徑之導程角；
軸承環，係套設於該螺帽外緣，該軸承環之內緣面係設有兩相對該外滾動溝之第一內滾動溝及第二內滾動溝，兩該外滾動溝與第一內滾動溝及第二內滾動溝分別形成兩第二負荷路徑，兩該第二負荷路徑係容設複數個第二滾動件，該軸承環之內緣面係與該間隔凸部之端面保持一間隙而形成一第二環油道，而兩該間隔凸部之間與該軸承環之內緣面係形成一第一環油道，該第一環油道之徑方向間隙係大於該第二環油道之徑方向間隙，且該斜向油孔之面積係大於該第二環油道之面積；且該軸承環係設有一輸油孔，該輸油孔一係與該第一環油道連通，另一端係貫穿該軸承環之外緣面。
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 lubricating structure for a nut rotating ball screw which allows the grease to flow relatively unobstructed.
For the above purposes, a nut-rotating ball screw with a lubricating structure includes:
a screw having a spiral rolling groove on its outer edge;
a nut is provided with a through hole for the screw, and the inner edge 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 first load path, and the first load path is The plurality of first rolling elements are disposed, and the outer edge of the nut is provided with two outer rolling grooves, and two spaced convex portions between the two outer rolling grooves, and the spacing between the two spaced apart convex portions is maintained. An oblique oil hole is disposed between the two spaced convex portions, and the oblique oil hole is inclined at an angle, and the angle is approximately equal to a lead angle of the first load path;
The bearing ring is sleeved on the outer edge of the nut, and the inner edge surface of the bearing ring is provided with two first inner rolling grooves and a second inner rolling groove opposite to the outer rolling groove, and the outer rolling groove and the first The inner rolling groove and the second inner rolling groove respectively form two second load paths, and the two second load paths receive a plurality of second rolling members, and the inner edge surface of the bearing ring and the end surface of the spacing convex portion are maintained a second annular oil passage is formed in the gap, and a first annular oil passage is formed between the two spaced apart convex portions and the inner edge of the bearing ring, and the radial direction gap of the first annular oil passage is greater than the second a radial direction clearance of the oil passage, and the area of the oblique oil hole is larger than an area of the second annular oil passage; and the bearing ring is provided with an oil delivery hole, and the oil delivery hole is connected to the first oil The road is connected, and the other end runs through the outer edge of the bearing ring.
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：
圖二係為本發明之具潤滑結構之螺帽旋轉式滾珠螺桿系統圖。
圖三係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿組合圖。
圖四係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿之軸方向剖視圖（一）。
圖五係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿之軸方向剖視圖（二）。
請參閱圖二至圖五所示係為本發明一較佳實施例，本發明係為一種具潤滑結構之螺帽旋轉式滾珠螺桿，係包含：
一螺桿（1），其外緣設有螺旋狀之滾動溝（11）；
一螺帽（2），係設有供該螺桿（1）穿設之穿孔（21），該穿孔（21）內緣係設有相對該滾動溝（11）之滾動槽（211），該滾動溝（11）及滾動槽（211）係形成一第一負荷路徑（A1），該第一負荷路徑（A1）係供複數第一滾動件（6）容置，且該螺帽（2）之外緣面設有兩外滾動溝（22），及位於兩該外滾動溝（22）之間的兩間隔凸部（8），該間隔凸部（8）係可與該螺帽（2）一體加工成型，或者，該間隔凸部（8）為一環型元件套設於該螺帽（2）之外緣面亦可，兩該間隔凸部（8）之間係保持一間距（P）設置，兩該間隔凸部間（8）係設有一斜向油孔（23），該斜向油孔（23）係傾斜一角度設置，該角度係約等於該第一負荷路徑（A1）之導程角（導程角為本業界專有名詞，再此不再多作說明），且該斜向油孔（23）於本實施例係為一長條狀之孔，其近似橢圓狀，且該斜向油孔（23）係位於滾動槽(211)之間；另，該螺帽（2）之兩端面（24）係設有複數螺絲孔（241）、迴流孔（25）及第一半迴流道（26），該複數螺絲孔（241）及迴流孔（25）係間隔設置於該端面（24），該迴流孔（25）係貫穿兩該端面（24），該第一半迴流道（26）之兩端係分別與該第一負荷路徑（A1）及迴流孔（25）連接；
兩迴流件（3），係分別設於兩該端面（24），該迴流件（3）係設有一供該螺桿（1）穿設之通孔（31），及第二半迴流道（32）、導引部（33）、第一貫穿孔（34），該第二半迴流道（32）係與該第一半迴流道（26）構成一迴流道，該第一負荷路徑（A1）、位於該螺帽（2）兩端之迴流道及該迴流孔（25）係構成一循環路徑，該導引部（33）係朝該滾動溝（11）凸伸設置，並容設於該滾動溝（11）中，係用以導引該第一滾動件（6）進入該迴流道，使該第一滾動件（6）能無限循環於該循環路徑，該第一貫穿孔（34）係相對該螺絲孔（241）設置，並貫穿該迴流件（3），並提供一螺絲（G）穿設後，該螺絲（G）係與該螺絲孔（241）螺合鎖固，以將該迴流件（3）固定於該螺帽（2）之端面（24）；
軸承環（90），係包含第一軸承環（4）及第二軸承環（5），該第一軸承環（4）係設有一供該螺帽（2）套設之第一安裝孔（41），該第一安裝孔（41）之內緣面係設有相對該外滾動溝（22）之第一內滾動溝（411），該外滾動溝（22）及第一內滾動溝（411）係構成一第二負荷路徑（A2），該第一軸承環（4）另設有複數螺孔（42）及第一輸油孔（43），該複數螺孔（42）係間隔設置於該第一軸承環（4）之端面，該第一輸油孔（43）具有第一端（431）及第二端（432），該第一端（431）係貫穿該第一軸承環（4）之ㄧ端面，第二端（432）係貫穿該第一軸承環（4）之內緣面，該第二端（432）係介於兩該間隔凸部（8）之間；該第二軸承環（5）係相對貼設於該第一軸承環（4）設有該第一端（431）之端面，該第二軸承環（5）係設有一供該螺帽（2）套設之第二安裝孔（52），該第二安裝孔（52）之內緣面係設有相對另一該外滾動溝（22）之第二內滾動溝（521），該外滾動溝（22）及第二內滾動溝（521）係構成另一第二負荷路徑（A2），該第二軸承環（5）另設有複數第二貫穿孔（53）及第二輸油孔（51），該複數第二貫穿孔（53）係間隔設置於該第二軸承環（5）之端面，並貫穿該端面，該第二輸油孔（51）具有第一端部（511）及第二端部（512），該第一端部（511）係貫穿該第二軸承環（5）之外緣面，第二端部（512）係貫穿該第二軸承環（5）之ㄧ端面，該第一輸油孔（43）之第一端（431）係與該第二輸油孔（51）之第二端部（512）相互銜接而構成一輸油孔，該第一端部（511）係與外部供油系統連接以將潤滑脂輸入至該輸油孔，兩該第二負荷路徑（A2）係容設複數個第二滾動件（7），該第二貫穿孔（53）係相對該螺孔（42）設置，並提供一螺絲（G）穿設後，該螺絲（G）係與該螺孔（42）螺合鎖固，以將該第一軸承環（4）與第二軸承環（5）連結固定構成該軸承環(90)；而該軸承環(90)套設於該螺帽(2)時，該軸承環(90)之內緣面(901)係與該間隔凸部(8)之端面保持一間隙而形成一第二環油道(B2)，而兩該間隔凸部(8)之間與該軸承環(90)之內緣面(901)係形成一第一環油道(B1)，該第一環油道(B1)之徑方向間隙(H1)係大於該第二環油道(B2)之徑方向間隙(H2)，且該斜向油孔(23)之面積係大於該第二環油道(B2)之面積，該斜向油孔(23)之面積為孔徑內壁輪廓所圍成的面積，該第二環油道(B2)之面積係為徑方向間隙(H2)乘寬度(D)。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 2 is a diagram of a nut-rotating ball screw system with a lubricated structure of the present invention.
Figure 3 is a combination view of a nut-rotating ball screw with a lubricating structure of the present invention.
Figure 4 is a cross-sectional view (I) of the nut-rotating ball screw of the lubricating structure of the present invention.
Figure 5 is a cross-sectional view of the nut-rotating ball screw of the lubricating structure of the present invention in the axial direction (2).
Referring to FIG. 2 to FIG. 5, which is a preferred embodiment of the present invention, the present invention is a nut-rotating ball screw with a lubricating structure, which comprises:
a screw (1), the outer edge of which is provided with a spiral rolling groove (11);
a nut (2) is provided with a through hole (21) for the screw (1) to be pierced, and the inner edge of the through hole (21) is provided with a rolling groove (211) opposite to the rolling groove (11), the rolling The groove (11) and the rolling groove (211) form a first load path (A1), the first load path (A1) is for receiving the plurality of first rolling members (6), and the nut (2) The outer edge surface is provided with two outer rolling grooves (22), and two spaced convex portions (8) between the two outer rolling grooves (22), the spacing convex portion (8) is compatible with the nut (2) Or integrally formed, or the spacer protrusion (8) may be a ring-shaped component sleeved on the outer edge surface of the nut (2), and a spacing (P) is maintained between the two spacer protrusions (8). The arrangement between the two spaced projections (8) is provided with an oblique oil hole (23) which is inclined at an angle which is approximately equal to the first load path (A1) The lead angle (the lead angle is a proper term in the industry, which will not be further explained), and the oblique oil hole (23) is a long hole in the embodiment, which is approximately elliptical. The oblique oil hole (23) is located between the rolling grooves (211); and the two ends (24) of the nut (2) are provided with a plurality of screw holes (241), return holes (25) and One half of the return channel (26), the plurality of screw holes (241) and the return hole (25) are spaced apart from the end surface (24), and the return hole (25) extends through the two end faces (24), the first half The two ends of the return passage (26) are respectively connected to the first load path (A1) and the return hole (25);
The two reflow members (3) are respectively disposed on the two end faces (24), and the reflow member (3) is provided with a through hole (31) through which the screw (1) is pierced, and a second return flow path (32). a guiding portion (33), a first through hole (34), and the second half return channel (32) and the first half return channel (26) form a return path, the first load path (A1) The return passages at the two ends of the nut (2) and the return hole (25) form a circulation path, and the guiding portion (33) is protruded toward the rolling groove (11) and is accommodated therein. The rolling groove (11) is configured to guide the first rolling member (6) into the return flow path, so that the first rolling member (6) can infinitely circulate in the circulation path, the first through hole (34) Corresponding to the screw hole (241), and extending through the reflow member (3), and providing a screw (G) for threading, the screw (G) is screwed with the screw hole (241) to be The returning member (3) is fixed to the end surface (24) of the nut (2);
The bearing ring (90) includes a first bearing ring (4) and a second bearing ring (5), and the first bearing ring (4) is provided with a first mounting hole for the nut (2) to be sleeved ( 41) The inner peripheral surface of the first mounting hole (41) is provided with a first inner rolling groove (411) opposite to the outer rolling groove (22), the outer rolling groove (22) and the first inner rolling groove ( 411) constituting a second load path (A2), the first bearing ring (4) is further provided with a plurality of screw holes (42) and a first oil transfer hole (43), and the plurality of screw holes (42) are spaced apart The first oil delivery hole (43) has a first end (431) and a second end (432), and the first end (431) extends through the first bearing ring. (4) the end face, the second end (432) extends through the inner edge surface of the first bearing ring (4), and the second end (432) is interposed between the two spaced protrusions (8); The second bearing ring (5) is oppositely disposed on the end surface of the first bearing ring (4) provided with the first end (431), and the second bearing ring (5) is provided with a nut (2) The second mounting hole of the sleeve (5 2) The inner peripheral surface of the second mounting hole (52) is provided with a second inner rolling groove (521) opposite to the other outer rolling groove (22), the outer rolling groove (22) and the second inner rolling The groove (521) constitutes another second load path (A2), and the second bearing ring (5) is further provided with a plurality of second through holes (53) and a second oil transfer hole (51), the plural second through The hole (53) is spaced apart from the end surface of the second bearing ring (5) and penetrates the end surface. The second oil hole (51) has a first end portion (511) and a second end portion (512). The first end portion (511) penetrates the outer edge surface of the second bearing ring (5), and the second end portion (512) penetrates the end surface of the second bearing ring (5), the first oil hole The first end (431) of the (43) and the second end (512) of the second oil delivery hole (51) are coupled to each other to form an oil delivery hole, and the first end portion (511) is externally supplied The oil system is connected to input grease to the oil delivery hole, and the second load path (A2) is provided with a plurality of second rolling members (7), and the second through hole (53) is opposite to the screw hole ( 42 After the screw is provided, the screw (G) is screwed with the screw hole (42) to connect the first bearing ring (4) with the second bearing ring (5). The bearing ring (90) is fixedly formed; and when the bearing ring (90) is sleeved on the nut (2), the inner edge surface (901) of the bearing ring (90) is connected to the spacing protrusion (8) The end face maintains a gap to form a second ring oil passage (B2), and the inner ring faces (901) of the bearing ring (90) between the two spaced projections (8) form a first ring oil passage ( B1), the radial direction gap (H1) of the first ring oil passage (B1) is larger than the radial direction gap (H2) of the second ring oil passage (B2), and the area of the oblique oil hole (23) is The area of the oblique oil hole (23) is larger than the area of the second oil passage (B2), and the area of the second oil passage (B2) is the radial clearance. (H2) Multiply the width (D).
以上說明係為本較佳實施例之各元件之結構及相互組態，以下說明本較佳實施例之實用方式：請參閱圖四及圖五所示，本發明之潤滑結構係藉由該間隔凸部(8)的設置而形成了第一環油道(B1)及第二環油道(B2)，該第一環油道(B1)係與該斜向油孔(23)連通，該第二環油道(B2)係與該第二負荷路徑(A2)連通，而當注油時，因第一負荷路徑(A1)的第一滾動件(6)數量較多，故潤滑脂須注入較多於第一負荷路徑(A1)，是以，該第一環油道(B1)的截面面積大於第二環油道(B2)的截面面積，相對的第一環油道(B1)的輸油量亦大於第二環油道(B2)的輸油量，當該潤滑脂由輸油孔注入該第一環油道(B1)時，首先會充滿整個第一環油道(B1)，而後流入該斜向油孔(23)再進入螺桿(1)與螺帽(2)之間，此時，當第一環油道(B1)所注入的潤滑脂壓力過大時，潤滑脂就會藉由第二環油道(B2)流入第二負荷路徑(A2)，故藉由本發明的潤滑結構的設計，能使潤滑脂迅速流至該螺帽（2）與螺桿（1）之間，並讓潤滑脂區分為兩區域一為專門潤滑第一負荷路徑（A1），二為專門潤滑第二負荷路徑（A2），使兩路徑的潤滑脂不會有共用的問題，也不會讓兩路徑之間的異物相互流通干涉，且因為該斜向油孔（23）為長條型結構，而不會有阻塞的問題產生，故能確實的潤滑該第一負荷路徑（A1），不會有潤滑不足的現象產生。
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。
The above description is based on the structure and mutual configuration of the components of the preferred embodiment. The following describes the practical mode of the preferred embodiment: Referring to FIG. 4 and FIG. 5, the lubricating structure of the present invention is separated by the interval. The convex portion (8) is disposed to form a first annular oil passage (B1) and a second annular oil passage (B2), and the first annular oil passage (B1) is in communication with the oblique oil hole (23), The second ring oil passage (B2) is in communication with the second load path (A2), and when the oil is injected, since the first rolling member (6) of the first load path (A1) has a large number, the grease must be injected. More than the first load path (A1), that is, the cross-sectional area of the first ring oil passage (B1) is larger than the cross-sectional area of the second ring oil passage (B2), and the opposite first oil passage (B1) The oil delivery amount is also greater than the oil quantity of the second ring oil passage (B2). When the grease is injected into the first ring oil passage (B1) from the oil delivery hole, it first fills the entire first oil passage (B1). And then flows into the oblique oil hole (23) and then enters between the screw (1) and the nut (2). At this time, when the pressure of the grease injected into the first ring oil passage (B1) is too large, the grease is Will flow into the second load through the second ring oil passage (B2) The diameter (A2), so that the lubricating structure of the invention can design the grease to flow quickly between the nut (2) and the screw (1), and the grease is divided into two regions, one for special lubrication first The load path (A1), the second is to specifically lubricate the second load path (A2), so that the grease of the two paths does not have a common problem, and the foreign matter between the two paths does not interfere with each other, and because the oblique direction The oil hole (23) has a long structure and there is no problem of clogging, so that the first load path (A1) can be reliably lubricated without occurrence of insufficient lubrication.
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.
(91)．．．螺桿(91). . . Screw
(910)．．．螺紋溝(910). . . Thread groove
(92)．．．螺帽(92). . . Nut
(920)．．．內螺紋(920). . . internal thread
(921)．．．貫穿孔(921). . . Through hole
(M)．．．空間(M). . . space
(93)．．．滾珠(93). . . Ball
(94)．．．軸承(94). . . Bearing
(940)．．．軸承外環(940). . . Bearing outer ring
(941)．．．貫穿孔(941). . . Through hole
(942)．．．滾動體(942). . . Rolling body
(1)．．．螺桿(1). . . Screw
(11)．．．滾動溝(11). . . Rolling groove
(2)．．．螺帽(2). . . Nut
(21)．．．穿孔(twenty one). . . perforation
(211)．．．滾動槽(211). . . Rolling groove
(22)．．．外滾動溝(twenty two). . . External rolling groove
(23)．．．斜向油孔(twenty three). . . Oblique oil hole
(24)．．．端面(twenty four). . . End face
(241)．．．螺絲孔(241). . . screw hole
(25)．．．迴流孔(25). . . Return hole
(26)．．．第一半迴流道(26). . . First half return channel
(3)．．．迴流件(3). . . Reflow piece
(31)．．．通孔(31). . . Through hole
(32)．．．第二半迴流道(32). . . Second half return channel
(33)．．．導引部(33). . . Guide
(34)．．．第一貫穿孔(34). . . First through hole
(4)．．．第一軸承環(4). . . First bearing ring
(41)．．．第一安裝孔(41). . . First mounting hole
(411)．．．第一內滾動溝(411). . . First inner rolling groove
(42)．．．螺孔(42). . . Screw hole
(43)．．．第一輸油孔(43). . . First oil hole
(431)．．．第一端(431). . . First end
(432)．．．第二端(432). . . Second end
(5)．．．第二軸承環(5). . . Second bearing ring
(51)．．．第二輸油孔(51). . . Second oil hole
(511)．．．第一端部(511). . . First end
(512)．．．第二端部(512). . . Second end
(52)．．．第二安裝孔(52). . . Second mounting hole
(521)．．．第二內滾動溝(521). . . Second inner rolling groove
(53)．．．第二貫穿孔(53). . . Second through hole
(6)．．．第一滾動件(6). . . First rolling piece
(7)．．．第二滾動件(7). . . Second rolling piece
(8)．．．間隔凸部(8). . . Spaced projection
(90)．．．軸承環(90). . . Bearing ring
(901)．．．內緣面(901). . . Inner edge
(G)．．．螺絲(G). . . Screw
(B1)．．．第一環油道(B1). . . First ring oil passage
(B2)．．．第二環油道(B2). . . Second ring oil passage
(A1)．．．第一負荷路徑(A1). . . First load path
(A2)．．．第二負荷路徑(A2). . . Second load path
(P)．．．間距(P). . . spacing
(D)．．．寬度(D). . . width
(H1、H2)．．．徑方向間隙(H1, H2). . . Diameter clearance
圖一係為習知技術具潤滑結構之螺帽旋轉式滾珠螺桿剖視圖。
圖二係為本發明之具潤滑結構之螺帽旋轉式滾珠螺桿系統圖。
圖三係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿組合圖。
圖四係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿之軸方向剖視圖（一）。
圖五係為本發明具潤滑結構之螺帽旋轉式滾珠螺桿之軸方向剖視圖（二）。
Figure 1 is a cross-sectional view of a nut-rotating ball screw of a conventionally lubricated structure.
Figure 2 is a diagram of a nut-rotating ball screw system with a lubricated structure of the present invention.
Figure 3 is a combination view of a nut-rotating ball screw with a lubricating structure of the present invention.
Figure 4 is a cross-sectional view (I) of the nut-rotating ball screw of the lubricating structure of the present invention.
Figure 5 is a cross-sectional view of the nut-rotating ball screw of the lubricating structure of the present invention in the axial direction (2).
(1)．．．螺桿(1). . . Screw
(11)．．．滾動溝(11). . . Rolling groove
(2)．．．螺帽(2). . . Nut
(21)．．．穿孔(twenty one). . . perforation
(211)．．．滾動槽(211). . . Rolling groove
(22)．．．外滾動溝(twenty two). . . External rolling groove
(23)．．．斜向油孔(twenty three). . . Oblique oil hole
(24)．．．端面(twenty four). . . End face
(241)．．．螺絲孔(241). . . screw hole
(3)．．．迴流件(3). . . Reflow piece
(31)．．．通孔(31). . . Through hole
(34)．．．第一貫穿孔(34). . . First through hole
(4)．．．第一軸承環(4). . . First bearing ring
(41)．．．第一安裝孔(41). . . First mounting hole
(411)．．．第一內滾動溝(411). . . First inner rolling groove
(43)．．．第一輸油孔(43). . . First oil hole
(431)．．．第一端(431). . . First end
(432)．．．第二端(432). . . Second end
(5)．．．第二軸承環(5). . . Second bearing ring
(51)．．．第二輸油孔(51). . . Second oil hole
(511)．．．第一端部(511). . . First end
(512)．．．第二端部(512). . . Second end
(52)．．．第二安裝孔(52). . . Second mounting hole
(521)．．．第二內滾動溝(521). . . Second inner rolling groove
(6)．．．第一滾動件(6). . . First rolling piece
(7)．．．第二滾動件(7). . . Second rolling piece
(8)．．．間隔凸部(8). . . Spaced projection
(901)．．．內緣面(901). . . Inner edge
(G)．．．螺絲(G). . . Screw
(B1)．．．第一環油道(B1). . . First ring oil passage
(B2)．．．第二環油道(B2). . . Second ring oil passage
(A1)．．．第一負荷路徑(A1). . . First load path
(A2)．．．第二負荷路徑(A2). . . Second load path
Claims (2)
一螺桿，其外緣設有螺旋狀之滾動溝；
一螺帽，係設有供該螺桿穿設之穿孔，該穿孔內緣係設有相對該滾動溝之滾動槽，該滾動溝及滾動槽係形成一第一負荷路徑，該第一負荷路徑係供複數第一滾動件容置，且該螺帽外緣設有兩外滾動溝，及位於兩該外滾動溝之間的兩間隔凸部，兩該間隔凸部之間係保持一間距設置，兩該間隔凸部間係設有一斜向油孔，該斜向油孔係傾斜一角度設置，該角度係約等於該第一負荷路徑之導程角；
軸承環，係套設於該螺帽外緣，該軸承環之內緣面係設有兩相對該外滾動溝之第一內滾動溝及第二內滾動溝，兩該外滾動溝與第一內滾動溝及第二內滾動溝分別形成兩第二負荷路徑，兩該第二負荷路徑係容設複數個第二滾動件，該軸承環之內緣面係與該間隔凸部之端面保持一間隙而形成一第二環油道，而兩該間隔凸部之間與該軸承環之內緣面係形成一第一環油道，該第一環油道之徑方向間隙係大於該第二環油道之徑方向間隙，且該斜向油孔之面積係大於該第二環油道之面積；且該軸承環係設有一輸油孔，該輸油孔係與該第一環油道連通，另一端係貫穿該軸承環之外緣面。A nut-rotating ball screw with a lubricating structure, comprising:
a screw having a spiral rolling groove on its outer edge;
a nut is provided with a through hole for the screw, and the inner edge 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 first load path, and the first load path is The plurality of first rolling elements are disposed, and the outer edge of the nut is provided with two outer rolling grooves, and two spaced convex portions between the two outer rolling grooves, and the spacing between the two spaced apart convex portions is maintained. An oblique oil hole is disposed between the two spaced convex portions, and the oblique oil hole is inclined at an angle, and the angle is approximately equal to a lead angle of the first load path;
The bearing ring is sleeved on the outer edge of the nut, and the inner edge surface of the bearing ring is provided with two first inner rolling grooves and a second inner rolling groove opposite to the outer rolling groove, and the outer rolling groove and the first The inner rolling groove and the second inner rolling groove respectively form two second load paths, and the two second load paths receive a plurality of second rolling members, and the inner edge surface of the bearing ring and the end surface of the spacing convex portion are maintained a second annular oil passage is formed in the gap, and a first annular oil passage is formed between the two spaced apart convex portions and the inner edge of the bearing ring, and the radial direction gap of the first annular oil passage is greater than the second a radial direction clearance of the oil passage, and the area of the oblique oil hole is larger than an area of the second annular oil passage; and the bearing ring is provided with an oil delivery hole, the oil delivery hole and the first oil passage Connected, the other end runs through the outer edge of the bearing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100149462A TWI444542B (en) | 2011-12-29 | 2011-12-29 | Rotary Ball Screw with Lubricated Structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100149462A TWI444542B (en) | 2011-12-29 | 2011-12-29 | Rotary Ball Screw with Lubricated Structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201326609A TW201326609A (en) | 2013-07-01 |
| TWI444542B true TWI444542B (en) | 2014-07-11 |
Family
ID=49224880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100149462A TWI444542B (en) | 2011-12-29 | 2011-12-29 | Rotary Ball Screw with Lubricated Structure |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI444542B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017122590B3 (en) * | 2017-09-08 | 2019-02-14 | Hiwin Technologies Corp. | Lubricant ball screw device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788878B (en) * | 2018-05-04 | 2019-07-16 | 青岛科技大学 | A kind of driving static-pressure lead screw pair of nut |
| CN110594379B (en) * | 2019-08-07 | 2021-08-31 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
| CN112211975A (en) * | 2020-09-30 | 2021-01-12 | 宁波双马机械工业有限公司 | Self-lubricating ball screw pair |
| JP2023104051A (en) * | 2022-01-17 | 2023-07-28 | 株式会社日立ハイテク | Stage device, charged particle beam device, and vacuum device |
-
2011
- 2011-12-29 TW TW100149462A patent/TWI444542B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017122590B3 (en) * | 2017-09-08 | 2019-02-14 | Hiwin Technologies Corp. | Lubricant ball screw device |
| US10619672B2 (en) | 2017-09-08 | 2020-04-14 | Hiwin Technologies Corp. | Lubricatable ball spline device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201326609A (en) | 2013-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI444542B (en) | Rotary Ball Screw with Lubricated Structure | |
| US8529135B2 (en) | Angular contact ball bearing | |
| US9500232B2 (en) | Ball bearing | |
| US9446788B2 (en) | Ball screw mechanism and steering device | |
| JP2008291970A (en) | Rolling bearing device | |
| JP6645378B2 (en) | Ball bearings and spindle devices for machine tools | |
| JP6672059B2 (en) | Crown type cage and ball bearing | |
| JP5183059B2 (en) | Multi-row rolling bearing device | |
| JP2008151180A (en) | Lubrication device for rolling bearing | |
| JP2015004431A (en) | Double-row roller bearing | |
| JP2014062618A (en) | Lubricating structure of bearing device | |
| JP2005090713A (en) | Bearing device | |
| JP6318584B2 (en) | Bearing device and spindle device | |
| TWM523025U (en) | Rotary ball screw having a lubricating structure | |
| JP2010090981A (en) | Lubricating structure of angular contact ball bearing | |
| TWI532932B (en) | And a transmission element of a lubricating structure with two spaced annular elements | |
| JP6066862B2 (en) | Engine rotary shaft bearing device | |
| KR101546746B1 (en) | Constant velocity joint for a vehicle | |
| JP5782818B2 (en) | Bearing lubrication structure | |
| JP7289686B2 (en) | rolling bearing | |
| TW201314079A (en) | Transmission element having double-nut connecting means | |
| JP2015227687A (en) | Friction roller transmission | |
| TWI378195B (en) | Rotary ball screw having a lubricating structure | |
| TWI443274B (en) | Ball screw with reflow element | |
| JP2015227682A (en) | Friction roller transmission |