TWM531532U

TWM531532U - Ball screw

Info

Publication number: TWM531532U
Application number: TW105211595U
Authority: TW
Inventors: Ivan Jia-Ming Yang; Ying-Ju Lin
Original assignee: Hiwin Tech Corp
Priority date: 2016-08-01
Filing date: 2016-08-01
Publication date: 2016-11-01

Description

Ball screw

本創作係為一種線性傳動元件，尤指一種滾珠螺桿。This creation is a linear transmission element, especially a ball screw.

如第五圖所示，係揭露一滾珠螺桿，係包含一螺桿軸（1），其外緣設有螺旋狀之滾動溝（11）；一螺帽（2）係套設於該螺桿軸（1），並設有相對該滾動溝（11）之滾動槽（未顯示），該滾動溝（11）與滾動槽係構成一負荷路徑，該負荷路徑係提供複數滾動件設置，該螺帽（2）外緣約於中間位置設有一法蘭（22），又於該螺帽（2）一端設有外螺紋（21），該法蘭（22）及外螺紋（21）係提供與其它機構相互結合固定，且該螺帽（2）於兩端分別設有一迴流元件（3），兩該迴流元件（3）係提供該滾動件迴流循環；
前述之螺帽（2）外觀結構較為特殊，故當兩該迴流元件（3）設於螺帽（2）端部時，由第五圖可清楚得知，該螺帽（2）之壁厚（H）已相當小，而造成有設置該外螺紋（21）之端部的迴流元件（3）設置於螺帽（2）時，會使該外螺紋（21）之牙型破損，主要因為該螺帽（2）之壁厚（H）不足，但如果增加壁厚（H）又無法符合使用者的需求，故如何維持相同螺帽（2）之壁厚（H）又能讓該外螺紋（21）完整無缺陷為目前主要課題。 As shown in the fifth figure, a ball screw is disclosed, which comprises a screw shaft (1), the outer edge of which is provided with a spiral rolling groove (11); a nut (2) is sleeved on the screw shaft ( 1), and is provided with a rolling groove (not shown) relative to the rolling groove (11), the rolling groove (11) and the rolling groove system constitute a load path, the load path provides a plurality of rolling elements, the nut ( 2) The outer edge is provided with a flange (22) at an intermediate position, and an external thread (21) is provided at one end of the nut (2). The flange (22) and the external thread (21) are provided with other mechanisms. Fixed to each other, and the nut (2) is respectively provided with a reflow element (3) at both ends, and the reflow element (3) provides the recirculation cycle of the rolling element;
The above-mentioned nut (2) has a special structure, so when the two reflow elements (3) are provided at the end of the nut (2), it can be clearly seen from the fifth figure that the thickness of the nut (2) is thick. (H) is quite small, and when the reflow element (3) having the end portion of the external thread (21) is provided on the nut (2), the tooth shape of the external thread (21) is broken, mainly because The thickness (H) of the nut (2) is insufficient, but if the wall thickness (H) is increased and it does not meet the needs of the user, how to maintain the wall thickness (H) of the same nut (2) allows the outer The complete defect-free thread (21) is currently the main subject.

    有鑑於上述問題，本創作主要目的在於：針對先前技術所描述之螺帽結構，進行迴流系統的設計，以讓螺帽壁厚及該外螺紋完整無缺陷。
    為達成上述之目的，本創作係為一種滾珠螺桿，係包含：一螺桿軸，其外緣設有螺旋狀之滾動溝；一螺帽，其具有一供該螺桿軸穿設之穿孔，該穿孔之內緣設有相對該滾動溝之滾動槽，該滾動溝及滾動槽係構成一負荷路徑，該螺帽具有第一端及第二端，該第一端之外緣面設有一外螺紋及一平面，該外螺紋係與該平面鄰接設置，該平面係由該螺帽之外緣面凹陷設置，該平面設有一安裝孔，該第二端之該穿孔中設有一安裝槽，並由該安裝槽底部延伸一迴流孔與該平面銜接；一迴流元件，其設於該安裝槽，並設有與該負荷路徑及該迴流孔銜接之迴流道；一外循環組件，其由一蓋板及一導引件組成，該導引件具有導引部，該導引部具有一導引面，該導引部係容設於該安裝孔，該蓋板係設置於該平面，該蓋板設有與該導引面及迴流孔銜接之U型槽，該U型槽係與該平面構成一封閉之路徑。
    較佳的，該平面係設有一螺絲孔，該導引件更具有一固定部，該固定部係具有一對應該平面之螺絲孔的通孔，該蓋板係設有一對應該通孔之沉頭孔，藉由一螺絲穿設於該沉頭孔及通孔後與該螺絲孔鎖固，以將該蓋板固定於該平面。
    較佳的，該迴流元件係設有一螺絲孔，該螺帽外緣設有對應該螺絲孔之沉頭孔，藉由一螺絲穿設於該沉頭孔後與該螺絲孔鎖固，以將該迴流元件固定於該安裝槽。
    較佳的，該U型槽之截面積大於該迴流孔之截面積。 In view of the above problems, the main purpose of the present invention is to design a reflow system for the nut structure described in the prior art to make the nut wall thickness and the external thread intact and free from defects.
In order to achieve the above object, the present invention is a ball screw comprising: a screw shaft having a spiral rolling groove on an outer edge thereof; and a nut having a through hole for the screw shaft to pass through, the perforation The inner edge is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a load path, the nut has a first end and a second end, and the outer edge of the first end is provided with an external thread and a plane, the external thread is disposed adjacent to the plane, the plane is recessed by the outer edge surface of the nut, the plane is provided with a mounting hole, and the second end of the through hole is provided with a mounting groove, and a reflow hole extending from the bottom of the mounting groove is engaged with the plane; a reflow element is disposed in the mounting groove, and is provided with a return path connecting the load path and the return hole; an outer circulation component is provided by a cover plate and a guiding member, the guiding member has a guiding portion, the guiding portion has a guiding surface, the guiding portion is received in the mounting hole, the cover plate is disposed on the plane, and the cover plate is disposed a U-shaped groove that is connected to the guiding surface and the return hole, the U-shaped groove The plane configuration of a closed path.
Preferably, the plane is provided with a screw hole, and the guiding member further has a fixing portion, the fixing portion has a pair of through holes which should be flat screw holes, and the cover plate is provided with a pair of through holes The head hole is locked to the screw hole through a counterbore and a through hole to fix the cover plate to the plane.
Preferably, the reflow element is provided with a screw hole, and the outer edge of the nut is provided with a countersunk hole corresponding to the screw hole, and a screw is inserted into the counterbore hole and locked with the screw hole to be The return element is fixed to the mounting groove.
Preferably, the cross-sectional area of the U-shaped groove is larger than the cross-sectional area of the return hole.

先前技術
1‧‧‧螺桿軸
11‧‧‧滾動溝
2‧‧‧螺帽
21‧‧‧外螺紋
22‧‧‧法蘭
3‧‧‧迴流元件
H‧‧‧壁厚
本創作
1‧‧‧螺桿軸
11‧‧‧滾動溝
2‧‧‧螺帽
21‧‧‧穿孔
211‧‧‧滾動槽
22‧‧‧沉頭孔
23‧‧‧安裝槽
24‧‧‧平面
241‧‧‧安裝孔
242‧‧‧螺絲孔
25‧‧‧外螺紋
26‧‧‧迴流孔
2A‧‧‧第一端
2B‧‧‧第二端
3‧‧‧導引件
31‧‧‧導引部
311‧‧‧導引面
32‧‧‧固定部
321‧‧‧通孔
4‧‧‧蓋板
41‧‧‧沉頭孔
42‧‧‧U型槽
5‧‧‧迴流元件
51‧‧‧螺絲孔
52‧‧‧迴流道
6‧‧‧滾動件
G‧‧‧螺絲 Prior art
1‧‧‧Screw shaft
11‧‧‧ rolling groove
2‧‧‧ nuts
21‧‧‧ external thread
22‧‧‧Flange
3‧‧‧Reflux components
H‧‧‧ wall thickness creation
1‧‧‧Screw shaft
11‧‧‧ rolling groove
2‧‧‧ nuts
21‧‧‧Perforation
211‧‧‧ rolling groove
22‧‧‧ countersunk hole
23‧‧‧Installation slot
24‧‧‧ plane
241‧‧‧ mounting holes
242‧‧‧ screw holes
25‧‧‧ external thread
26‧‧‧Return hole
2A‧‧‧ first end
2B‧‧‧ second end
3‧‧‧Guide
31‧‧‧ Guidance Department
311‧‧‧ Guide surface
32‧‧‧ Fixed Department
321‧‧‧through hole
4‧‧‧ Cover
41‧‧‧ countersunk hole
42‧‧‧U-shaped slot
5‧‧‧Reflux components
51‧‧‧ screw holes
52‧‧‧Return
6‧‧‧Rolling parts
G‧‧‧ screws

第一圖係為本創作滾珠螺桿的系統圖。
第二圖係為本創作滾珠螺桿的組合圖。
第三圖係為本創作滾珠螺桿的軸方向剖視圖。
第四圖係為本創作滾珠螺桿的徑方向剖視圖。
第五圖係為先前技術之滾珠螺桿的組合圖。 The first picture is a system diagram of the created ball screw.
The second picture is a combination of the creation of the ball screw.
The third figure is a cross-sectional view of the axial direction of the created ball screw.
The fourth figure is a cross-sectional view of the created ball screw in the radial direction.
The fifth figure is a combination of the prior art ball screws.

    請參閱第一圖至第四圖所示，本創作係為一種滾珠螺桿，係包含：一螺桿軸（1），其外緣設有螺旋狀之滾動溝（11）；一螺帽（2），其具有一供該螺桿軸（1）穿設之穿孔（21），該穿孔（21）之內緣設有相對該滾動溝（11）之滾動槽（211），該滾動溝（11）及滾動槽（211）係構成一負荷路徑，該螺帽（2）具有第一端（2A）及第二端（2B），該第一端（2A）之外緣面設有一外螺紋（25）及一平面（24），該外螺紋（25）係與該平面（24）鄰接設置，該平面（24）係由該螺帽（2）之外緣面凹陷設置，該平面（24）設有一安裝孔（241），該第二端（2B）之該穿孔（21）中設有一安裝槽（23），並由該安裝槽（23）底部延伸一迴流孔（26）與該平面（24）銜接；一迴流元件（5），其設於該安裝槽（23），並設有與該負荷路徑及該迴流孔（26）銜接之迴流道（52），該迴流元件（5）係設有一螺絲孔（51），該螺帽（2）外緣設有對應該螺絲孔（51）之沉頭孔（22），藉由一螺絲（G）穿設於該沉頭孔（22）後與該螺絲孔（51）鎖固，以將該迴流元件（5）固定於該安裝槽（23）；一外循環組件，其由一蓋板（4）及一導引件（3）組成，該導引件（3）具有導引部（31）及固定部（32），該導引部（31）具有一導引面（311），該導引部（31）係容設於該安裝孔（241）；該平面（24）係設有一螺絲孔（242），該固定部（32）係具有一對應該平面（24）之螺絲孔的通孔（321），該蓋板（4）係設有一對應該通孔（321）之沉頭孔（41），藉由一螺絲（G）穿設於該沉頭孔（41）及通孔（321）後與該螺絲孔（242）鎖固，以將該蓋板（4）固定於該平面（24）；該蓋板（4）係設置於該平面（24），該蓋板（4）設有與該導引面（311）及迴流孔（26）銜接之U型槽（42），該U型槽（42）係與該平面（24）構成一封閉之路徑，為了提升該滾動件（6）循環的順暢度，本實施例的U型槽（42）之截面積大於該迴流孔（26）之截面積。
    藉由該螺帽設有一平面(24)之設計，讓迴流孔(26)與該U型槽（42）係與該平面（24）構成一封閉之路徑，能形成讓滾動件（6）循環迴流之路徑，以讓滾動件（6）能夠再回到負荷路徑運行，且因為該迴流元件（5）與外循環組件的搭配，巧妙的保留該第一端（2A）之螺帽（2）的壁厚，讓該外螺紋（25）不會因為肉厚減少而損壞。
    綜所上述，所以本創作之『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，本創作的『新穎性』以及『進步性』都已符合專利法規，爰依法提出創作專利之申請，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創作，並非用以限制本創作，故舉凡數值之變化與等效元件之置換，仍應隸屬本創作之範疇。 Referring to the first to fourth figures, the present invention is a ball screw comprising: a screw shaft (1) having a spiral rolling groove (11) on the outer edge thereof; a nut (2) , having a through hole (21) for the screw shaft (1), the inner edge of the hole (21) is provided with a rolling groove (211) opposite to the rolling groove (11), the rolling groove (11) and The rolling groove (211) constitutes a load path, the nut (2) has a first end (2A) and a second end (2B), and the outer end surface of the first end (2A) is provided with an external thread (25) And a plane (24), the external thread (25) is disposed adjacent to the plane (24), the plane (24) is recessed by the outer edge surface of the nut (2), and the plane (24) is provided with a plane a mounting hole (241), the mounting hole (23) is disposed in the through hole (21) of the second end (2B), and a return hole (26) and the plane (24) are extended from the bottom of the mounting groove (23) a reflow element (5) disposed in the mounting groove (23) and provided with a return path (52) coupled to the load path and the return hole (26), the return The flow element (5) is provided with a screw hole (51), and the outer edge of the nut (2) is provided with a counterbore hole (22) corresponding to the screw hole (51), and is disposed by a screw (G) The counterbore (22) is locked with the screw hole (51) to fix the reflow element (5) to the mounting groove (23); an outer circulation assembly is provided by a cover plate (4) and a guide The guide member (3) has a guiding portion (31) and a fixing portion (32), the guiding portion (31) having a guiding surface (311), the guiding portion (31) The system is disposed in the mounting hole (241); the plane (24) is provided with a screw hole (242), and the fixing portion (32) has a pair of through holes (321) which should be screw holes of the plane (24) The cover plate (4) is provided with a pair of counterbore holes (41) which should pass through the through holes (321), and a screw (G) is disposed through the countersunk hole (41) and the through hole (321). The screw hole (242) is locked to fix the cover plate (4) to the plane (24); the cover plate (4) is disposed on the plane (24), and the cover plate (4) is provided with Guide surface (311) and return hole (26) Connected to the U-shaped groove (42), the U-shaped groove (42) and the plane (24) form a closed path, in order to improve the smoothness of the circulation of the rolling member (6), the U-shaped groove of the embodiment ( 42) The cross-sectional area is larger than the cross-sectional area of the return hole (26).
The nut is provided with a flat surface (24) so that the return hole (26) and the U-shaped groove (42) form a closed path with the flat surface (24), and the rolling member (6) can be formed to circulate. a path of reflow to allow the rolling member (6) to return to the load path, and because of the matching of the reflow element (5) with the outer circulation assembly, the first end (2A) nut is cleverly retained (2) The wall thickness is such that the external thread (25) is not damaged by the reduced thickness of the meat.
In view of the above, the "industry availability" of this creation should be unquestionable. In addition, the characteristic techniques revealed in the examples in this case have not been seen in publications before, and have not been disclosed. The use, not only has the fact that the effect is improved as described above, but also has additional functions that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the creation have been in compliance with the patent regulations, and the application for creating a patent is proposed 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 illustrate the present invention and is not intended to limit the present invention. Therefore, variations of numerical values and substitution of equivalent elements are still within the scope of the present invention.

1‧‧‧螺桿軸 1‧‧‧Screw shaft

11‧‧‧滾動溝 11‧‧‧ rolling groove

2‧‧‧螺帽 2‧‧‧ nuts

21‧‧‧穿孔 21‧‧‧Perforation

211‧‧‧滾動槽 211‧‧‧ rolling groove

22‧‧‧沉頭孔 22‧‧‧ countersunk hole

23‧‧‧安裝槽 23‧‧‧Installation slot

24‧‧‧平面 24‧‧‧ plane

241‧‧‧安裝孔 241‧‧‧ mounting holes

242‧‧‧螺絲孔 242‧‧‧ screw holes

25‧‧‧外螺紋 25‧‧‧ external thread

2A‧‧‧第一端 2A‧‧‧ first end

2B‧‧‧第二端 2B‧‧‧ second end

3‧‧‧導引件 3‧‧‧Guide

31‧‧‧導引部 31‧‧‧ Guidance Department

311‧‧‧導引面 311‧‧‧ Guide surface

32‧‧‧固定部 32‧‧‧ Fixed Department

321‧‧‧通孔 321‧‧‧through hole

4‧‧‧蓋板 4‧‧‧ Cover

41‧‧‧沉頭孔 41‧‧‧ countersunk hole

42‧‧‧U型槽 42‧‧‧U-shaped slot

5‧‧‧迴流元件 5‧‧‧Reflux components

51‧‧‧螺絲孔 51‧‧‧ screw holes

52‧‧‧迴流道 52‧‧‧Return

6‧‧‧滾動件 6‧‧‧Rolling parts

G‧‧‧螺絲 G‧‧‧ screws

Claims

A ball screw comprises: a screw shaft, the outer edge of which is provided with a spiral rolling groove; a nut having a through hole for the screw shaft, the inner edge of the hole is opposite to the rolling groove a rolling groove, the rolling groove and the rolling groove form a load path, the nut has a first end and a second end, the outer edge of the first end is provided with an external thread and a plane, and the external thread is connected to the plane Adjacently disposed, the plane is recessed by the outer peripheral surface of the nut, the plane is provided with a mounting hole, the second end of the through hole is provided with a mounting groove, and a bottom of the mounting groove extends a return hole and the plane a reflow element, which is disposed in the mounting groove and is provided with a return path that is coupled to the load path and the return hole; an outer circulation assembly is composed of a cover plate and a guiding member, the guiding member The guiding portion has a guiding surface, the guiding portion is received in the mounting hole, the cover plate is disposed on the plane, and the cover plate is disposed to be connected with the guiding surface and the return hole a U-shaped groove that forms a closed path with the plane.

The ball screw according to claim 1, wherein the plane is provided with a screw hole, and the guiding member further has a fixing portion, wherein the fixing portion has a pair of through holes which should be flat screw holes, and the cover plate is A pair of counterbore holes that are through holes are provided, and a screw is inserted through the counterbore holes and the through holes to be locked with the screw holes to fix the cover plate to the plane.

The ball screw of claim 1, wherein the reflow element is provided with a screw hole, and the outer edge of the nut is provided with a countersunk hole corresponding to the screw hole, and a screw is inserted through the counterbore hole and The screw hole is locked to fix the return element to the mounting groove.

The ball screw of claim 1, wherein the U-shaped groove has a cross-sectional area larger than a cross-sectional area of the return hole.