CN201521614U - Ball screw device - Google Patents
Ball screw device Download PDFInfo
- Publication number
- CN201521614U CN201521614U CN2009201523218U CN200920152321U CN201521614U CN 201521614 U CN201521614 U CN 201521614U CN 2009201523218 U CN2009201523218 U CN 2009201523218U CN 200920152321 U CN200920152321 U CN 200920152321U CN 201521614 U CN201521614 U CN 201521614U
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- ball
- circulation
- circulation piece
- ball screw
- screw device
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Abstract
A ball screw device comprises a screw and a ball screw cap. The ball screw cap is sleeved and slidably arranged on the screw and is provided with a screw cap body, a first circulating part and a second circulating part, the first circulating part is disposed inside the screw cap body along a first radial direction perpendicular to an axial direction of the screw, and the second circulating part is disposed inside the screw cap body along a second radial direction perpendicular to the axial direction of the screw. A manufacturing method of the screw cap body of the ball screw device includes that holes are drilled at corresponding positions of the screw cap body, and then the first circulating part and the second circulating part can be disposed inside the screw cap body. The manufacturing method of the ball screw cap is relatively simple, can avoid causing waste of materials due to cutting, and then reduces integral manufacturing cost of the ball screw device. In addition, the size of the ball screw cap can not be increased due to the first circulating part and the second circulating part, and then stroke of the ball screw cap can not be shortened.
Description
Technical field
The utility model is about a kind of ball screw device.
Background technique
In various ball screw devices,, rotation can be converted to linear transmission by cooperating of screw rod and ball nut.In addition, ball by start capable of circulation and ball nut and screw rod are fitted to each other again, reduce the frictional force between ball nut and screw rod, make ball screw device more smooth-going when operation.
Please refer to shown in Figure 1ly, a kind of known ball screw device A1 comprises a screw rod 1 and a ball nut 2, and ball nut 2 is sheathed and be slidingly installed on the screw rod 1.Wherein, ball nut 2 has a nut body 21 and a circulation piece 22.Circulation piece 22 is arranged on the outer surface of nut body 21, and circulation piece 22 connects with corresponding ball channel respectively, to form a circulating path.Therefore, in circulating path, roll, can make screw rod 1 carry out relative spiral motion, and to make ball nut 2 be to move along screw rod 1 with ball nut 2 by a plurality of ball B.
Yet, in ball screw device A1, can be arranged on nut body 21 outer surfaces in order to make circulation piece 22, nut body 21 must come the nut body 21 of cutting part earlier by modes such as turnning and milling processing.But, so not only make the production method of nut body 21 become comparatively complicated, and the material that nut body 21 machines away also can cause cost waste, and then cause the fabricating cost of ball screw device A1 to improve.
In addition, because circulation piece 22 is not the tangent direction setting of corresponding ball B motion, therefore, also cause ball screw device A1 to damage easily and can't run up because of ball B drops.
Therefore, how to design a kind of production method comparatively simple, can reduce cost and keep the stable ball screw device that runs up, become one of important topic.
The model utility content
The purpose of this utility model provide a kind of production method comparatively simple, can reduce cost and keep the stable ball screw device that runs up.
The utility model can be realized by the following technical solutions.
A kind of ball screw device of the present utility model comprises a screw rod and a ball nut.Ball nut is sheathed and be slidingly installed on the screw rod, and have a nut body, one first circulation piece and one second circulation piece, first circulation piece is radially to be arranged in the nut body along one axial one first of vertical screw, and second circulation piece is radially to be arranged in the nut body along one second of vertical axial.
Aforesaid ball screw device, wherein said first radially radially is perpendicular to one another with described second.
Aforesaid ball screw device, wherein said ball nut also has a circulation canal, and described nut body, described first circulation piece and described second circulation piece are respectively equipped with the described circulation canal of at least a portion.
Aforesaid ball screw device, wherein said screw rod and described nut body have a thread groove respectively, corresponding formation one ball channel with described screw flight groove of the thread groove of described nut body.
Aforesaid ball screw device, the common circulating path that forms of wherein said circulation canal and described ball channel.
Aforesaid ball screw device, wherein said first circulation piece and described second circulation piece have a guide portion respectively, and described guide portion is the two ends of corresponding described circulation canal respectively.
Aforesaid ball screw device, wherein said first circulation piece engages with described nut body respectively with described second circulation piece, gummed, sealed, fastening, chimeric or its combination, fixes.
Aforesaid ball screw device, wherein said ball nut also has two locating pieces, is separately positioned on described first circulation piece and described second circulation piece.
Aforesaid ball screw device, wherein said locating piece engage with described nut body respectively, gummed, sealed, fastening, chimeric or its combination, fix.
By technique scheme, ball screw device of the present utility model has following advantage at least:
Ball screw device of the present utility model is that to utilize first circulation piece be radially to be arranged in the nut body along axial first of vertical screw, and second circulation piece be radially to be arranged in the nut body along second of vertical axial, promptly be first circulation piece and second circulation piece be arranged on the meat of nut body thick in.Therefore, the production method of nut body of the present utility model only needs position corresponding on the nut body to hole, and first circulation piece and second circulation piece can be arranged in the nut body.Whereby, the production method of ball nut is comparatively simple, can avoid cutting the waste that processing procedure causes material, to reduce ball screw device integral manufacturing cost.And the size of ball nut can not increase because of first circulation piece and second circulation piece, so the stroke of ball nut can not be compressed yet and shortens.
Description of drawings
Fig. 1 is a kind of schematic representation of known ball screw device;
Fig. 2 is the schematic representation of a kind of ball screw device of the utility model preferred embodiment; And
Fig. 3 is first circulation piece of the present utility model, second circulation piece and ball fit applications mode schematic representation.
The primary clustering symbol description:
1: screw rod 2: ball nut
21: nut body 22: circulation piece
3: screw rod 31,411: thread groove
4: ball nut 41: the nut body
Circulation piece 421,431 in 42: the first: guide portion
5: dust preventing component A1: ball screw device
A2: ball screw device B: ball
D1: first D2 radially: second radially
I: axial P: circulation canal
S: set screw
Embodiment
Hereinafter with reference to correlative type, a kind of ball screw device according to the utility model preferred embodiment is described.
Please refer to shown in Figure 2ly, it is the decomposing schematic representation of the ball screw device A2 of the utility model preferred embodiment.Ball screw device A2 comprises a screw rod 3 and a ball nut 4.
Screw rod 3 has a thread groove 31, and ball nut 4 is sheathed and be slidingly installed on the screw rod 3, and has a nut body 41, one first circulation piece 42 and one second circulation piece 43.Nut body 41 has a thread groove 411, the thread groove 411 of nut body 41 and the thread groove of screw rod 3 31 corresponding formation one ball channels.In addition, ball nut 4 also can have a circulation canal P, and nut body 41, first circulation piece 42 and second circulation piece 43 are respectively equipped with at least a portion circulation canal P.Be noted that, be represented by dotted lines a part of circulation canal P of position in nut body 41 among Fig. 2.The common circulating path that forms of circulation canal P and ball channel, a plurality of ball B then move in circulating path.In the present embodiment, described ball B can also be that a ball distance ring (not shown) is connected, and wherein the pattern of ball distance ring and design and unrestricted for example can be chain type ball retainer etc.
What deserves to be mentioned is, first circulation piece 42 and second circulation piece 43 can make up (for example utilizing modes such as engaging, gummed, fastening) by two assemblies of ejection formation respectively and form, perhaps directly come one-body molded by injection molding method, perhaps directly process one-body molded to a material (for example metallic material), yet this is nonrestrictive.In addition, ball nut 4 also can have two locating pieces 44, be separately positioned on first circulation piece 42 and second circulation piece 43, whereby, after first circulation piece 42 and second circulation piece 43 are assembled in nut body 41, can carry out fixing on the Vertical direction (as D1 and second D2 radially radially of first among Fig. 2) by 44 pairs first circulation pieces 42 of locating piece and second circulation piece 43.Moreover, locating piece 44 can engage with nut body 41, gummed, sealed, fastening, chimeric or its combination, fixes, in the present embodiment, for example utilize set screw S sealed and engage mode and be fixed as example with locating piece 44 and nut body 41, yet this is nonrestrictive.
In addition, in the present embodiment, first circulation piece 42 and second circulation piece 43 also can have a guide portion 421,431 respectively, corresponding respectively the two ends of guide portion 421,431 at circulation canal P, and guide portion 421,431 correspondences are in the tangent direction of described ball B motion, and guide portion 421,431 for example can have the cambered surface with ball B form fit.Therefore, with reference to Fig. 2 and shown in Figure 3, can guide ball B by the guide portion 421,431 of first circulation piece 42 and second circulation piece 43 move to first circulation piece 42 or second circulation piece 43 smooth-goingly by the ball channel of 41 of screw rod 3 and nut bodies, perhaps guide ball B is moved to 41 of screw rod 3 and nut bodies by first circulation piece 42 or second circulation piece 43 ball channel smooth-goingly, can avoid ball B to drop whereby because of the section difference between ball channel and circulation canal P.
Therefore, the ball screw device A2 of present embodiment is by being arranged on first circulation piece 42 and second circulation piece 43 in the nut body 41, can make the production method of nut body 41 only need the position of corresponding first circulation piece 42 and second circulation piece 43 to hole thereon, first circulation piece 42 and second circulation piece 43 can be embedded in the nut body 41.Whereby, not only the production method of ball nut 4 is comparatively simple, can avoid cutting the waste that processing procedure causes material, to reduce ball screw device A2 integral manufacturing cost.And the size of ball nut 4 can not increase because of first circulation piece 42 and second circulation piece 43, so the stroke of ball nut 4 can not be compressed yet and shortens.In addition, because guide portion 421,431 correspondences of first circulation piece 42 and second circulation piece 43 are in the tangent direction of described ball B motion, whereby when ball screw device A2 runs up, described ball B still can move in circulating path smooth-goingly, and the stability in the time of can improving ball screw device A2 whereby and run up is to improve the product reliability.
In addition, in the present embodiment, ball screw device A2 can comprise that also two dust preventing component 5 are arranged on the both sides of nut body 41, dust preventing component 5 can be by engaging, gummed, sealed, fastening, chimeric or its combination, with fixing with ball nut 4, in the present embodiment, utilize locking mode to be fixed as example with dust preventing component 5, yet this is nonrestrictive.Whereby can be in order to striking off chip or the dust of being infected with at screw rod 3, and avoid foreign matter enter ball nut 4 and screw rod 3 between.
In sum, according to ball screw device of the present utility model is to be radially to be arranged in the nut body along axial first of vertical screw with one first circulation piece, and one second circulation piece be radially to be arranged in the nut body along second of vertical axial, promptly be, be about to first circulation piece and second circulation piece be arranged on the meat of nut body thick in.Therefore, the production method of nut body of the present utility model only needs position corresponding on the nut body to hole, and first circulation piece and second circulation piece can be arranged in the nut body.Whereby, the production method of ball nut is comparatively simple, can avoid cutting the waste that processing procedure causes material, to reduce ball screw device integral manufacturing cost.And the size of ball nut can not increase because of first circulation piece and second circulation piece, so the stroke of ball nut can not be compressed yet and shortens.In addition, because all corresponding tangent direction setting of first circulation piece and second circulation piece in the ball motion, therefore, when ball screw device runs up, described ball still can move in circulating path smooth-goingly, and the stability in the time of can improving ball screw device whereby and run up is to improve the product reliability.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present utility model and category, and, all should be included in the accompanying Claim its equivalent modifications of carrying out or change.
Claims (9)
1. a ball screw device is characterized in that, comprising:
One screw rod; And
One ball nut, sheathed and be slidingly installed on the described screw rod, and have a nut body, one first circulation piece and one second circulation piece, described first circulation piece is radially to be arranged in the described nut body along one axial one first of vertical described screw rod, and described second circulation piece is radially to be arranged in the described nut body along vertical described axial one second.
2. ball screw device according to claim 1 is characterized in that, described first radially radially is perpendicular to one another with described second.
3. ball screw device according to claim 1 is characterized in that described ball nut also has a circulation canal, and described nut body, described first circulation piece and described second circulation piece are respectively equipped with the described circulation canal of at least a portion.
4. ball screw device according to claim 3 is characterized in that, described screw rod and described nut body have a thread groove respectively, corresponding formation one ball channel with described screw flight groove of the thread groove of described nut body.
5. ball screw device according to claim 4 is characterized in that, the common circulating path that forms of described circulation canal and described ball channel.
6. ball screw device according to claim 3 is characterized in that, described first circulation piece and described second circulation piece have a guide portion respectively, and described guide portion is the two ends of corresponding described circulation canal respectively.
7. ball screw device according to claim 1 is characterized in that, described first circulation piece engages with described nut body respectively with described second circulation piece, gummed, sealed, fastening, chimeric or its combination, fixes.
8. ball screw device according to claim 1 is characterized in that described ball nut also has two locating pieces, is separately positioned on described first circulation piece and described second circulation piece.
9. ball screw device according to claim 8 is characterized in that, described locating piece engages with described nut body respectively, gummed, sealed, fastening, chimeric or its combination, fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201523218U CN201521614U (en) | 2009-04-29 | 2009-04-29 | Ball screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201523218U CN201521614U (en) | 2009-04-29 | 2009-04-29 | Ball screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521614U true CN201521614U (en) | 2010-07-07 |
Family
ID=42507790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201523218U Expired - Lifetime CN201521614U (en) | 2009-04-29 | 2009-04-29 | Ball screw device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375558A (en) * | 2012-04-27 | 2013-10-30 | 黑田精工株式会社 | Ball screw with an improved end deflector |
| JP2019203590A (en) * | 2018-05-25 | 2019-11-28 | 日本精工株式会社 | Manufacturing method of ball screw nut, and ball screw |
| CN111075896A (en) * | 2019-12-31 | 2020-04-28 | 慈兴集团有限公司 | Ball screw with guide pipe |
| CN113738837A (en) * | 2021-09-07 | 2021-12-03 | 无锡市高盛机械制造有限公司 | Ball screw pair with safety device |
-
2009
- 2009-04-29 CN CN2009201523218U patent/CN201521614U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375558A (en) * | 2012-04-27 | 2013-10-30 | 黑田精工株式会社 | Ball screw with an improved end deflector |
| JP2019203590A (en) * | 2018-05-25 | 2019-11-28 | 日本精工株式会社 | Manufacturing method of ball screw nut, and ball screw |
| JP7110728B2 (en) | 2018-05-25 | 2022-08-02 | 日本精工株式会社 | Ball screw nut manufacturing method and ball screw |
| CN111075896A (en) * | 2019-12-31 | 2020-04-28 | 慈兴集团有限公司 | Ball screw with guide pipe |
| CN113738837A (en) * | 2021-09-07 | 2021-12-03 | 无锡市高盛机械制造有限公司 | Ball screw pair with safety device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160704 Address after: China Taiwan 236 New Taipei City Forest District more than 3 Road No. 123 Patentee after: TBI Motion Technology Co., Ltd. Address before: China Taiwan Taipei County Tucheng City, Zhongshan Road No. 91 Patentee before: Comtop Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |
|
| CX01 | Expiry of patent term |