CN204647191U - Double nut series of balls lead screw pair - Google Patents
Double nut series of balls lead screw pair Download PDFInfo
- Publication number
- CN204647191U CN204647191U CN201520312224.6U CN201520312224U CN204647191U CN 204647191 U CN204647191 U CN 204647191U CN 201520312224 U CN201520312224 U CN 201520312224U CN 204647191 U CN204647191 U CN 204647191U
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- CN
- China
- Prior art keywords
- nut
- spring
- mother
- lead screw
- screw mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of double nut series of balls lead screw pair, comprise screw mandrel, be arranged on mother nut on screw mandrel and secondary nut, secondary nut is fixed on mother nut, is provided with the spring outwards strutted between mother nut and secondary nut.The utility model removes two seal ring in the middle of major-minor nut, change the spring that an export-oriented size and pressure are all applicable to, through the past external support force of spring, the opposite direction making major-minor nut different toward both sides ejects, and makes it reach the effect in pretension elimination gap; In use any one of steel ball, screw mandrel, the large accessory of nut three has wearing and tearing, produce gap and all automatically can eliminate gap all the time because of the elastic force of spring, read in its precision and working life to obtain fine effectively continuity, scrap until use nut; And spring is hidden in inside seal groove, good improvement be have also been obtained for the attractive in appearance of outward appearance; It also decreases on the cost of production and processing.
Description
Technical field
The utility model relates to and technical field of mechanical transmission, particularly relates to a kind of ball screw installing double nut.
Background technique
Double nut on existing market has two kinds: one is pad is pretension, and its effect is seated by intermediate washer, and the major-minor two nut opposite direction different toward both sides is overhanged, and makes it reach the effect in pretension elimination gap; Its shortcoming: when nut uses the regular period, any one of the large accessory of steel ball, screw mandrel, nut three has wearing and tearing, all can produce gap, make nut lose its pretension, eliminate the function in gap, must dismantle, change pad, again pretension.Another kind is and cap prefastening, its effect is, screw thread on the cylindrical of secondary nut does, add two lockings and cap, nut seat one crown the flange of positive nut, and other end heads on the also cap above secondary nut, its principle is the same with gasket type principle, and cap is tighter, more different toward the both sides opposite direction of major-minor nut overhangs, make it reach effect that pretension eliminates gap; Its shortcoming and gasket type similar, when nut uses the regular period, any one of the large accessory of steel ball, screw mandrel, nut three has wearing and tearing, generation gap, capital, make nut lose its pretension, eliminate the function in gap, by also cap is tight inward again, it is made to eliminate gap, if but ball wire bar pair install, at the core position of equipment, want and cap lock inward again, often need first to remove other and have dry and astringent parts, trouble very.
Model utility content
The utility model will solve above-mentioned prior art Problems existing, provides a kind of double nut series of balls lead screw pair, adopts spring reach pretension and eliminate gap, increases working life.
The utility model solves the technological scheme that its technical problem adopts: this double nut series of balls lead screw pair, comprise screw mandrel, be arranged on mother nut on screw mandrel and secondary nut, secondary nut is fixed on mother nut, is provided with the spring outwards strutted between mother nut and secondary nut.Eliminate the gap between mother nut and secondary nut by spring like this, increase working life.
In order to perfect further, the inwall of mother nut and secondary nut joint is respectively equipped with mounting groove, and spring fitting is in mounting groove.Such spring is hidden in inside, have also been obtained good improvement for the attractive in appearance of outward appearance; It also decreases on the cost of production and processing.
Perfect further, the outer wall of mother nut and secondary nut joint is respectively equipped with screw, and is fixedly connected on respectively on screw by link.Such connection is simply firm.
Perfect further, the two ends, left and right of link have the through hole corresponding with screwhole position, penetrate screw and be fastened in screw in through hole.
Perfect further, the outer wall of mother nut and secondary nut joint is respectively equipped with groove, and link is embedded in groove.Such link is embedded in groove, is not easy to collide link.
The effect that the utility model is useful is: the utility model removes two seal ring in the middle of major-minor nut, change the spring that an export-oriented size and pressure are all applicable to, through the past external support force of spring, the opposite direction making major-minor nut different toward both sides ejects, and makes it reach the effect in pretension elimination gap; In use any one of steel ball, screw mandrel, the large accessory of nut three has wearing and tearing, produce gap and all automatically can eliminate gap all the time because of the elastic force of spring, read in its precision and working life to obtain fine effectively continuity, scrap until use nut; And spring is hidden in inside seal groove, good improvement be have also been obtained for the attractive in appearance of outward appearance; It also decreases on the cost of production and processing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the internal view of mother nut and secondary nut in the utility model;
Fig. 3 is the three-dimensional structure diagram of mother nut in the utility model;
Fig. 4 is the three-dimensional structure diagram of secondary nut in the utility model;
Fig. 5 is the three-dimensional structure diagram of link in the utility model.
Description of reference numerals: screw mandrel 1, mother nut 2, secondary nut 3, spring 4, mounting groove 5, screw 6, link 7, through hole 7-1, screw 8, groove 9.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing: double nut series of balls lead screw pair in the present embodiment, comprise screw mandrel 1, be arranged on mother nut 2 on screw mandrel 1 and secondary nut 3, secondary nut 3 is fixed on mother nut 2, is provided with the spring 4 outwards strutted between mother nut 2 and secondary nut 3.The inwall of mother nut 2 and secondary nut 3 joint is respectively equipped with mounting groove 5, and spring 4 is installed in mounting groove 5.
Wherein the outer wall of mother nut 2 and secondary nut 3 joint is respectively equipped with screw 6, and is fixedly connected on respectively on screw 6 by link 7.The two ends, left and right of link 7 have the through hole 7-1 corresponding with screw 6 position, penetrate screw 8 and be fastened in screw 6 in through hole 7-1.The outer wall of mother nut 2 and secondary nut 3 joint is respectively equipped with groove 9, and link 7 is embedded in groove 9.
Although the utility model has illustrated by reference to preferred embodiment and has described, those skilled in the art should understand, and in the scope of claims, can do the various change in form and details.
Claims (5)
1. a double nut series of balls lead screw pair, comprise screw mandrel (1), be arranged on mother nut (2) on screw mandrel (1) and secondary nut (3), it is characterized in that: described secondary nut (3) is fixed on mother nut (2), the spring (4) outwards strutted is installed between mother nut (2) and secondary nut (3).
2. double nut series of balls lead screw pair according to claim 1, it is characterized in that: the inwall of described mother nut (2) and secondary nut (3) joint is respectively equipped with mounting groove (5), and described spring (4) is installed in mounting groove (5).
3. double nut series of balls lead screw pair according to claim 1, it is characterized in that: the outer wall of described mother nut (2) and secondary nut (3) joint is respectively equipped with screw (6), and be fixedly connected on respectively on screw (6) by link (7).
4. double nut series of balls lead screw pair according to claim 3, it is characterized in that: the two ends, left and right of described link (7) have the through hole (7-1) corresponding with screw (6) position, penetrate screw (8) and be fastened in screw (6) in through hole (7-1).
5. double nut series of balls lead screw pair according to claim 4, it is characterized in that: the outer wall of described mother nut (2) and secondary nut (3) joint is respectively equipped with groove (9), and described link (7) is embedded in groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312224.6U CN204647191U (en) | 2015-05-15 | 2015-05-15 | Double nut series of balls lead screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312224.6U CN204647191U (en) | 2015-05-15 | 2015-05-15 | Double nut series of balls lead screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204647191U true CN204647191U (en) | 2015-09-16 |
Family
ID=54099947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520312224.6U Expired - Fee Related CN204647191U (en) | 2015-05-15 | 2015-05-15 | Double nut series of balls lead screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204647191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782380A (en) * | 2016-04-13 | 2016-07-20 | 西北工业大学 | Planetary roller screw pair pre-tightening device capable of adjusting and measuring pre-tightening force |
| CN111692304A (en) * | 2020-06-22 | 2020-09-22 | 傲垦数控装备(苏州)有限公司 | Self-gap eliminating method for double-nut ball screw |
-
2015
- 2015-05-15 CN CN201520312224.6U patent/CN204647191U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782380A (en) * | 2016-04-13 | 2016-07-20 | 西北工业大学 | Planetary roller screw pair pre-tightening device capable of adjusting and measuring pre-tightening force |
| CN111692304A (en) * | 2020-06-22 | 2020-09-22 | 傲垦数控装备(苏州)有限公司 | Self-gap eliminating method for double-nut ball screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 323000 No. 361, Lugu Avenue, Shuige Industrial Zone, Liandu District, Lishui City, Zhejiang Province Patentee after: LISHUI CHUANGFENG TECHNOLOGY Co.,Ltd. Address before: 323000 No. 23, Jinbi street, Tianning Industrial Zone, Lishui City, Zhejiang Province Patentee before: LISHUI CHUANGFENG TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |