CN202012603U - Single-nut ball screw pair - Google Patents
Single-nut ball screw pair Download PDFInfo
- Publication number
- CN202012603U CN202012603U CN2011201096569U CN201120109656U CN202012603U CN 202012603 U CN202012603 U CN 202012603U CN 2011201096569 U CN2011201096569 U CN 2011201096569U CN 201120109656 U CN201120109656 U CN 201120109656U CN 202012603 U CN202012603 U CN 202012603U
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- CN
- China
- Prior art keywords
- nut
- hollow nut
- screw
- thread
- pressing plate
- 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 a single-nut ball screw pair, which includes a hollow nut, wherein internal threads are arranged on the inner wall of the hollow nut, a screw is arranged in the hollow nut, external threads are arranged on the outer circumference of the screw, the thread mouth of each internal thread corresponds to the thread mouth of one external thread respectively, the thread mouths are jointed to form a plurality of circles of channels, dustproof rings are arranged between two ends of the hollow nut and the screw, the upper surface of the hollow nut is connected with a pressure plate, the pressure plate is connected with the hollow nut through a plurality of bolts, one end of each of a plurality of insert pipes is connected in the pressure plate, the other end of each of the insert pipes passes through the hollow nut and corresponds to one channel respectively, and balls arranged in a row are arranged in both the channels and the insert pipes. The single-nut ball screw pair has the advantages of running resistance reduction, facilitation of starting, low friction loss, high transmission efficiency, shorter ball return stroke, better rigidity, and improved running precision.
Description
Technical field
The utility model relates to a kind of single nut ball wire bar pair.
Background technique
At numerical control machining center and electromechanical integration machinery etc., feeding drives and improves constantly, fast in the progresses of work such as location, high-speed cutting, high-speed driving, because linear electric motor cost an arm and a leg, the control system complexity, ball screw is still the selection of high-speed driving the best, and existing ball screw transmission generally by adopting double nuts structure, promptly is with two nuts on leading screw, can cause whole screw component internal structure comparatively complicated like this, volume is also bigger, the while poor processability, and assembly technology is loaded down with trivial details.
Summary of the invention
The purpose of this utility model is in order to overcome above deficiency, a kind of compact structure to be provided, and is easy to loading and unloading, reliable operation, the single nut ball wire bar pair of good rigidly.
The purpose of this utility model is achieved through the following technical solutions: a kind of single nut ball wire bar pair, comprise a hollow nut, the inwall of hollow nut is provided with internal thread, be provided with leading screw in the hollow nut, the excircle of leading screw is provided with outside thread, the respectively corresponding externally threaded screw mouth of the screw mouth of each internal thread, and both piece together the multi-turn passage, be equipped with dust ring between the two ends of hollow nut and the leading screw, the upper surface of hollow nut is connected with a pressing plate, pressing plate is connected with hollow nut by a plurality of screws, be connected with an end of a plurality of intubate in the pressing plate, it is corresponding with a passage respectively that the other end of a plurality of intubate all passes hollow nut, is equipped with the ball that is arranged in a row in multi-turn passage and a plurality of intubate.
Further improvement of the utility model is: described pressing plate is connected with hollow nut by two screws.
Further improvement of the utility model is: an end that is connected with two intubate in the described pressing plate.
The utility model compared with prior art has the following advantages: the utility model is by producing addendum modification with nut inner thread displacement helical pitch between two groups of circulating rings in a nut, realize that pretension transfers the crack, place an amount of ball in the raceway between leading screw and nut as middle transmission body, guarantee that by intubate ball forms closed shuttling movement repeatedly between leading screw and nut, so not only simple in structure, compact dimensions, and produce addendum modification by means of nut inner thread displacement helical pitch and realize that pretension transfers the crack.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Number in the figure: 1-hollow nut, 2-internal thread, 3-outside thread, 4-dust ring, 5-pressing plate, 6-screw, 7-intubate, 8-ball, 9-leading screw.
Embodiment:
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection domain.
Show a kind of embodiment of the utility model single nut ball wire bar pair as Fig. 1, comprise a leading screw 1 of laterally placing, the excircle of leading screw 1 is provided with outside thread 2, be with nut 3 on the leading screw 1, the internal surface of nut 3 is provided with internal thread 4, the screw mouth of the respectively corresponding outside thread 2 of the screw mouth of each internal thread 4, and both piece together the multi-turn raceway, be equipped with dust ring 5 between the two end part of nut 3 and the leading screw 1, prevent iron filings, dust cooling liquid etc. enters loop body inside, the outer surface of nut 3 is connected with pressing plate 7 by a plurality of screws 6, be provided with two intubate 8 in the pressing plate 7, intubate 8 is fixed by pressing plate 7, and two intubate about 8 are provided with, the all corresponding raceway of the port of each intubate 8 one end is in the multi-turn raceway, and be equipped with a plurality of balls 9 that are arranged in a row setting in each intubate 8.
The utility model is located between two groups of interior circulating rings of a ball nut, and produce addendum modification by means of nut inner thread displacement helical pitch and realize that pretension transfers the crack, the size of pretightening force can produce higher sport efficiency, and running resistance reduces by deciding with radial clearance, start easily, the ball fluency is good, and is highly sensitive, and frictional loss is few, the transmission efficiency height, the ball backhaul is shorter, and rigidity is better, and running accuracy is improved, and the nut radial dimension is little, part number reduces like this, when assembling, and easier advantage, by utilizing the ball motion that rotation motion is converted into straight line motion, or straight line motion is converted into rotation motion, have very little surface friction drag like this, so starting torque is minimum, the such creeping phenomenon of sliding movement can not appear, can guarantee to realize accurate little feeding, and can give pressure, can make axial clearance reach negative value owing to give pressure, and then obtaining higher rigidity, the utility model is because the sport efficiency height, it is little to generate heat, so can realize the high speed feed motion.
Claims (3)
1. single nut ball wire bar pair, comprise a hollow nut (1), it is characterized in that: the inwall of described hollow nut (1) is provided with internal thread (2), be provided with leading screw (9) in the described hollow nut (1), the excircle of described leading screw (9) is provided with outside thread (3), the screw mouth of the respectively corresponding described outside thread of the screw mouth of each described internal thread (2) (3), and both piece together the multi-turn passage, be equipped with dust ring (4) between the two ends of described hollow nut (1) and the described leading screw (9), the upper surface of described hollow nut (1) is connected with a pressing plate (5), described pressing plate (5) is connected with described hollow nut (1) by a plurality of screws (6), be connected with an end of a plurality of intubate (7) in the described pressing plate (5), it is corresponding with a passage respectively that the other end of a plurality of described intubate (7) all passes described hollow nut (1), is equipped with the ball (8) that is arranged in a row in the described passage of multi-turn and a plurality of described intubate (7).
2. according to the described single nut ball wire bar pair of claim 1, it is characterized in that: described pressing plate (5) is connected with described hollow nut (1) by two screws (6).
3. according to claim 1 or 2 described single nut ball wire bar pairs, it is characterized in that: an end that is connected with two intubate (7) in the described pressing plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201096569U CN202012603U (en) | 2011-04-14 | 2011-04-14 | Single-nut ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201096569U CN202012603U (en) | 2011-04-14 | 2011-04-14 | Single-nut ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012603U true CN202012603U (en) | 2011-10-19 |
Family
ID=44783217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201096569U Expired - Fee Related CN202012603U (en) | 2011-04-14 | 2011-04-14 | Single-nut ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202012603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255872A (en) * | 2020-02-18 | 2020-06-09 | 江苏品德机电科技有限公司 | Ball screw pair and production method thereof |
-
2011
- 2011-04-14 CN CN2011201096569U patent/CN202012603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255872A (en) * | 2020-02-18 | 2020-06-09 | 江苏品德机电科技有限公司 | Ball screw pair and production method thereof |
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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: 20111019 Termination date: 20120414 |