CN202091452U - Double nuts of ball screw - Google Patents
Double nuts of ball screw Download PDFInfo
- Publication number
- CN202091452U CN202091452U CN2011201873416U CN201120187341U CN202091452U CN 202091452 U CN202091452 U CN 202091452U CN 2011201873416 U CN2011201873416 U CN 2011201873416U CN 201120187341 U CN201120187341 U CN 201120187341U CN 202091452 U CN202091452 U CN 202091452U
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- China
- Prior art keywords
- nuts
- screw
- inner ring
- ball
- utility
- 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
The utility model relates to double nuts of a ball screw, comprising a screw, an inner ring and two nuts, wherein balls are disposed between the nuts and the raceway of the screw; grooves having an equal inner diameter are opened in the interiors mutually close to a contacted place of the two nuts respectively; the inner ring is in close fit with the grooves; the two nuts are provided with screw holes at the grooves respectively; and the two nuts are fixed on the inner ring via bolts respectively to be in a close connection. The double nuts of a ball screw related by the utility model have the following advantages: the two nuts are ingeniously connected via the bolts, so that the connection is tight and has no influence on the outer profile dimensions of the nuts, and a series of complex procedures of replacing a bearing mould necessarily due to the changes of the nut outer profiles is efficiently avoided.
Description
Technical field
The utility model relates to a kind of ball screw double nut.
Background technique
Ball guide screw nat is in the numerical control machine tool rotation motion to be converted into straight-line transmission device commonly used, and it is with the slip of the rolling place of lead screw pair of nut of ball, and frictional force is little.In order to reduce or to eliminate axial clearance, resiliently deformable is controlled in the inferior limit, usually adopt double nut to carry out pretension, pretightening force can reduce the axial displacement that resiliently deformable is brought effectively.Chang Yong ball screw double nut links together two nuts by screw on the market, in the joint of two nuts one hinge is set, the structure of hinge is complicated, the position of hinge generally need be provided with the hinge groove, need remodify the mould of bearing like this, has increased production process, reduced manufacturing efficiency, in addition, hinge connects defective tightness makes bearing generation slippage easily, influences the precision of workpiece.
The model utility content
The purpose of this utility model provides a kind of ball screw double nut, to overcome the prior art above shortcomings.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of ball screw double nut, comprise leading screw, inner ring and two nuts, be equipped with ball between the raceway of described two nuts and leading screw, two nuts offer the groove of uniform internal diameter respectively mutually at it near the inside of contacting point, described inner ring and described groove closely cooperate, described two nuts are respectively equipped with screw at described groove, and described two nuts are separately fixed on the inner ring by screw and closely connect.
The beneficial effects of the utility model: simple structure, rational in infrastructure; The nut joint is provided with an inner ring, and in two nut joints screw is set, and by screw two nuts is fixed on the inner ring closely, is connected firmly, and has effectively improved the slip precision of bearing; Inner ring is arranged on the nut inner ring, does not influence the apparent size of nut, so just can save the transformation operation to the bearing mould, has improved living rate of production and marketing; Only need process a groove at inner ring, operation is single, and is simple in structure.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the overall structure schematic representation of the described a kind of ball screw double nut of the utility model embodiment.
Among the figure:
1 nut; 2 screws; 3, ball; 4, inner ring; 5, leading screw.
Embodiment
As shown in Figure 1, the described a kind of ball screw double nut of the utility model embodiment, comprise leading screw 5, inner ring 4 and two nuts 1, be equipped with ball 3 between the raceway of described two nuts 1 and leading screw 5, two nuts 1 offer the groove of uniform internal diameter respectively in its inside near the contacting point, described inner ring 4 closely cooperates with described groove, and the groove of described two nuts 1 is respectively equipped with screw 2, and described two nuts 1 are separately fixed at by screw two nuts 1 are closely linked together.Be processed with the arc spiral chute on two nuts 1 and the leading screw 5, nut 1 and leading screw 5 are linked in together, 5 of nut 1 and leading screws form the screw thread raceway, between raceway, be equipped with ball 3, when leading screw 5 or nut 1 rotation, ball 3 rolls along the screw thread raceway, produce rolling friction when then producing relative movement between leading screw 5 or the nut 1, for prevent that ball 3 from rolling out from the screw thread track, be provided with backhaul guiding device (reverser) at the spiral chute two ends of nut, it and screw thread track form circulation loop, and ball is circulated in nut rolling way.For making 1 contact of two nuts closely, the pretightening force of being convenient to regulate double nut is added a resilient pad at two nut 1 surface of contact.Double nut can effectively be controlled at resiliently deformable in the inferior limit, and to eliminate axial clearance, the pretightening force that double nut produces can reduce the axial displacement that resiliently deformable is brought effectively, but can not be excessive or too small.Excessive pretightening force will increase between the ball 3 or ball 3 and two nuts 1 between surface friction drag, reduce transmission efficiency, make leading screw 5 wearing and tearing too early or destroy, the screw pair life-span is shortened dramatically; When pretightening force is too small, can cause the axial clearance amount of lathe ball guide screw nat when work not eliminated fully.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but on its shape or structure, do any variation; every have identical with a application or akin technological scheme, all drops within the protection domain of the present utility model.
Claims (1)
1. ball screw double nut, comprise leading screw (5), inner ring (4) and two nuts (1), it is characterized in that: be equipped with ball (3) between the raceway of described two nuts (1) and leading screw (5), two nuts (1) offer the groove of uniform internal diameter respectively mutually at it near the inside of contacting point, described inner ring (4) closely cooperates with described groove, described two nuts (1) are respectively equipped with screw (2) at described groove, and described two nuts (1) are separately fixed at inner ring (4) by screw and upward and closely connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201873416U CN202091452U (en) | 2011-06-03 | 2011-06-03 | Double nuts of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201873416U CN202091452U (en) | 2011-06-03 | 2011-06-03 | Double nuts of ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091452U true CN202091452U (en) | 2011-12-28 |
Family
ID=45366521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201873416U Expired - Fee Related CN202091452U (en) | 2011-06-03 | 2011-06-03 | Double nuts of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091452U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090412A (en) * | 2015-07-06 | 2015-11-25 | 广东技术师范学院 | Automatic pre-tightening device for ball screws |
| CN105081915A (en) * | 2015-08-24 | 2015-11-25 | 莆田市清龙首饰模具有限公司 | Double-ration bead grinding machine |
| CN105986286A (en) * | 2015-02-09 | 2016-10-05 | 李树宝 | Novel electrolytic cell anode cassette fixture and special high temperature resistant greases thereof |
| WO2019042111A1 (en) * | 2017-08-29 | 2019-03-07 | 苏世宽 | Non-invasive radio-frequency ablation system |
| CN113251122A (en) * | 2020-10-10 | 2021-08-13 | 杭州新剑机器人技术股份有限公司 | Differential planetary roller screw |
-
2011
- 2011-06-03 CN CN2011201873416U patent/CN202091452U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986286A (en) * | 2015-02-09 | 2016-10-05 | 李树宝 | Novel electrolytic cell anode cassette fixture and special high temperature resistant greases thereof |
| CN105986286B (en) * | 2015-02-09 | 2018-03-16 | 李树宝 | Novel electrolytic bath anode small box fastener and its special high temperature resistant lubricating grease |
| CN105090412A (en) * | 2015-07-06 | 2015-11-25 | 广东技术师范学院 | Automatic pre-tightening device for ball screws |
| CN105090412B (en) * | 2015-07-06 | 2017-08-22 | 广东技术师范学院 | A kind of automatic pre-tightening apparatus of ball-screw |
| CN105081915A (en) * | 2015-08-24 | 2015-11-25 | 莆田市清龙首饰模具有限公司 | Double-ration bead grinding machine |
| WO2019042111A1 (en) * | 2017-08-29 | 2019-03-07 | 苏世宽 | Non-invasive radio-frequency ablation system |
| CN113251122A (en) * | 2020-10-10 | 2021-08-13 | 杭州新剑机器人技术股份有限公司 | Differential planetary roller screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20140603 |