CN2775396Y - Adjustable rolling ball screw pair screw nut - Google Patents
Adjustable rolling ball screw pair screw nut Download PDFInfo
- Publication number
- CN2775396Y CN2775396Y CN 200520055185 CN200520055185U CN2775396Y CN 2775396 Y CN2775396 Y CN 2775396Y CN 200520055185 CN200520055185 CN 200520055185 CN 200520055185 U CN200520055185 U CN 200520055185U CN 2775396 Y CN2775396 Y CN 2775396Y
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- nut body
- screw nut
- nut
- ball screw
- straight tube
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- Expired - Lifetime
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Abstract
The utility model relates to a rolling ball screw rod pair screw nut which belongs to the technical field of mechanical drive, particularly an adjustable rolling ball screw rod pair screw nut. The utility model comprises a screw nut body, a straight barrel screw nut body, an action concave stand and a regulating bolt, wherein a screw thread roller path for placing rolling balls is arranged in the screw nut body, and one end of the straight barrel screw nut body is arranged in the screw nut body; the regulating bolt is installed in a regulating threaded hole which is arranged on the screw nut body; the action concave stand is provided with a groove which is processed at the external circumference of the straight barrel screw nut body, the bottom of the groove is cambered, and the entrance of the action concave stand is matched with the bottom of the regulating threaded hole; the cambered bottom of the action concave stand can be supported by the regulating bolt of the regulating threaded hole. The utility model has the advantages of simple structure, easy adjustment, fewer working processes, low technical complexity for regulating prepressing, convenient use, beautiful appearance, simple structure, short length, incremental effective step, high work efficiency and low cost. The utility model can change the prepressing structural style of a double screw nut and the separation prepressing structural style of a single screw nut existing in the prior art.
Description
[technical field]
The utility model relates to the ball screw pair nut in the mechanical transmissioning technology field, particularly relates to a kind of adjustable ball screw pair nut.
[background technique]
Ball screw pair is the parts that ball screw, ball nut ball are formed, and it can change straight line motion with rotatablely moving into, or straight line motion changed into rotatablely moves.According to the endless form of ball in the ball nut, three kinds of configured balls lead screw pair have been stipulated in the JB/T9893-1999 standard: interior circulating ball lead screw pair (comprising float reverse type and fixing reverse type), outer tube flush type ball screw pair and outer tube convex type ball screw pair.
The reverser hole of the ball nut in interior circulation, outer tube flush type and the outer tube convex type ball screw pair and the requirement on machining accuracy height of extrapolation pore, the position degree requires high, generally finishes on numerical control milling machine or machining center.The processing request of interior cycle reverses device is also very high.Particularly the assembly technology requirement is higher, and three above reverser holes are generally arranged on the interior circulating ball nut, and two or four insertion holes are generally arranged on the ball nut of outer tube always, and ball circulates by these reversers or insertion hole.Accomplish that the screw thread raceway in the ball nut is connected with the slyness of reverser or intubate, the assurance ball by the time do not blocked, except that the very high processing technique of needs, also need the mounting technology of assembler's exquisiteness.The assembling level of present domestic ball screw pair is totally not high, and the assembly quality instability has become a universal phenomenon, has influenced the normal use of user to lead screw pair.
The matching gap of prior art adjusting nut and leading screw, precompressed is generally adopted: double nut is to increase or to reduce the thick, thin of tightening cushion; Single nut then with wrong apart from or increase, reduce diameter of the steel ball and regulate.Be the axial view of existing double nut pretension chip architecture as shown in Figure 1.Fig. 2 is the axial view (in figure 1. first nuts, 2. second nut, 3. pretension sheet, 4. ball screw) of existing single nut mistake apart from prepressing structure.As can be seen from the figure, the firmly beforehand means of these two kinds of structures all is adjusted good before dispatching from the factory by ball screw manufactory, and the user can't change, even readjust, also will dismantle from machinery, is regulated by producer after posting reduction factory.The nut volume is big simultaneously, time-consuming taking a lot of work, and efficient is low.
[summary of the invention]
The purpose of this utility model provides a kind of adjustable ball screw pair nut, makes the user can regulate the matching gap of precompressed or leading screw and nut voluntarily like a cork according to actual usage requirement, and the nut volume is little simultaneously, and processing is simple.
The technological scheme that its technical problem that solves the utility model adopts is: adjustable ball screw pair nut, comprise nut body and straight tube nut body, and be useful on the screw thread raceway of placing ball in it; One end of straight tube nut body places in the nut body;
Described adjustable ball screw pair nut also comprises the effect concave station and regulates bolt; Described adjusting bolt is installed in the adjusting screw that is arranged on the nut body; Described effect concave station is that a bottom that processes on the straight tube nut body excircle is the groove of arc, and its inlet matches with the bottom of described adjusting screw; Can withstand the curved bottom of effect concave station by the adjusting bolt of regulating screw.
Described adjustable ball screw pair nut also comprises circulator, is positioned on the inwall of nut body and straight tube nut body, is an arc wedge groove that processes on nut body and the straight tube nut body inwall.
Described adjustable ball screw pair nut comprises two effect concave stations, is arranged at symmetrically on the outer wall of straight tube nut body, is in same circumference with oil hole.
Described adjustable ball screw pair nut comprises that two are regulated bolt, is arranged at nut flange cylindrical, is in same circumference with oil hole.
The utility model is simple in structure, and is easy to adjust, regulates straight tube nut body with respect to moving axially that nut body produces by adjustment, can to eliminate matching gap, increase (reducing) precompressed (pretightening force) with placing the interior steel ball of two nut bodies to push the raceway both sides respectively to.Change precompressed of prior art double nut and single nut mistake apart from the structural type of precompressed, reduced manufacturing procedure, reduced the technical complexity of adjusting precompressed, made things convenient for the user.Make it in use, leading screw, nut, steel ball produce wearing and tearing, and it is not in good time gap or precompressed to occur, can regulate voluntarily easily, need not dismounting or change parts.Nut aesthetic in appearance, simple in structure, length reduces, and has only 50% of same size double nut length overall, therefore uses adjustable nut under the situation of same size size, and its effective travel is increased.Because parts reduce, thereby processing is simple, the work efficiency height, and cost is low.
[description of drawings]
Fig. 1 is the axial sectional view of double nut pretension chip architecture of the prior art.
Fig. 2 is the axial sectional view of single nut mistake of the prior art apart from prepressing structure.
Fig. 3 is the axial sectional view after the utility model assembling one.
Fig. 4 is the radial cross-section after the utility model assembling one.
Fig. 5 is the axial sectional view of nut A in the utility model.
Fig. 6 is the radial cross-section of nut A in the utility model.
Fig. 7 is the axial view of nut B in the utility model.
Fig. 8 is the radial cross-section of nut B in the utility model.
[embodiment]
With specific embodiment the utility model is done to set forth further with reference to the accompanying drawings below.
The utility model is on the basis of using prior art processing and mounting strap precompressed ball screw pair nut, retrieved " second chapter 7 of machine tool design handbook " feed screw nut transmission " (China Machine Press: in August, 1980 Guangxi front page) and issue by the 1989-03-30 of Ministry of Machine-building and Electronics Industry, " People's Republic of China's professional standard " ZB that 1990-01-01 implements) first of 51004-89 " ball screw pair " retrieved behind the related content of " State Intellectual Property Office's patent database " designed.
To shown in Figure 8, adjustable ball screw pair nut comprises nut body A, straight tube nut body B, ball screw ball E, effect concave station O, circulator D and regulates bolt C as Fig. 3.Be useful on the screw thread raceway of placing ball E in nut body A and the straight tube nut body B, the end of straight tube nut body B places in the nut body A, and two nut bodies are meshing with each other.Nut body A and straight tube nut body B are sleeved on the ball screw by ball E.
Circulator D is an arc wedge groove that processes on nut body A and the straight tube nut body B inwall.Regulating bolt C is installed in the adjusting screw that is arranged on the nut body A.Effect concave station O is that a bottom that processes on the straight tube nut body B excircle is the groove of arc, and its inlet matches with the bottom of described adjusting screw, can withstand the curved bottom of effect concave station O by the adjusting bolt C that regulates screw.Be provided with two effect concave station O in the utility model device altogether, be arranged at symmetrically on the inwall of straight tube nut body B, be in same circumference with oil hole.Correspondingly, be provided with two altogether and regulate bolt C.
Place nut flange cylindrical owing to regulate bolt C, be in same circumference, need not dismantle ball screw pair, just can adjust precompressed at random with oil hole.When needs are regulated, operator can rotate two respectively with a screw-driver and regulate bolt C, regulate bolt C and withstand straight effect concave station O place on the nut body B, because the bottom is an arc, when regulating tight more that bolt twists, its top can be goed deep into curved bottom more, therefore promote straight tube nut body B away from nut body A, make straight tube nut body B produce axial motion with respect to nut body A, make nut body A and screw thread raceway and the threads of lead screw raceway of straight tube nut body B produce alternate position spike, ball E will press to nut body raceway one side respectively, thereby has changed the degree of tightness matching relationship of nut body and ball screw, to reach the precompressed effect of expection.
F is a mounting hole among the figure.
The utility model device has changed that double nut precompressed and single nut mistake have reduced manufacturing procedure apart from the structural type of precompressed in the prior art, has reduced the technical complexity of adjusting precompressed, has made things convenient for the user.Make it in use, ball screw, nut body, steel ball produce wearing and tearing, and it is not in good time gap or precompressed to occur, can regulate voluntarily easily, need not dismounting or change parts.Nut aesthetic in appearance, length reduces, thereby has increased effective travel.The work efficiency height, cost is low.
Claims (4)
1, adjustable ball screw pair nut comprises nut body (A) and straight tube nut body (B), is useful on the screw thread raceway of placing ball (E) in it; It is characterized in that: an end of straight tube nut body (B) places in the nut body (A);
Also comprise effect concave station (O) and regulate bolt (C); Described adjusting bolt (C) is installed in the adjusting screw that is arranged on the nut body (A); Described effect concave station (O) is that a bottom that processes on straight tube nut body (B) excircle is the groove of arc, and its inlet matches with the bottom of described adjusting screw; Can withstand the curved bottom of effect concave station (O) by the adjusting bolt (C) of regulating screw.
2, adjustable ball screw pair nut according to claim 1, it is characterized in that: also comprise circulator (D), being positioned on the inwall of nut body (A) and straight tube nut body (B), is an arc wedge groove that processes on nut body (A) and straight tube nut body (B) inwall.
3, adjustable ball screw pair nut according to claim 1 is characterized in that: comprise two effect concave stations (O), be arranged at symmetrically on the outer wall of straight tube nut body (B), be in same circumference with oil hole.
4, adjustable ball screw pair nut according to claim 1 is characterized in that: comprise that two are regulated bolt (C), be arranged at nut flange cylindrical, be in same circumference with oil hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055185 CN2775396Y (en) | 2005-03-03 | 2005-03-03 | Adjustable rolling ball screw pair screw nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055185 CN2775396Y (en) | 2005-03-03 | 2005-03-03 | Adjustable rolling ball screw pair screw nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775396Y true CN2775396Y (en) | 2006-04-26 |
Family
ID=36749712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055185 Expired - Lifetime CN2775396Y (en) | 2005-03-03 | 2005-03-03 | Adjustable rolling ball screw pair screw nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775396Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277476A (en) * | 2013-04-25 | 2013-09-04 | 苏州市职业大学 | Device capable of eliminating gap between screw and nut |
| CN106043409A (en) * | 2016-07-26 | 2016-10-26 | 钦州学院 | Steering apparatus based on flexible steering of ballscrew |
| CN110107665A (en) * | 2019-06-10 | 2019-08-09 | 湖北工程职业学院 | A kind of accurate precompressed ball screw |
| CN110185758A (en) * | 2019-05-06 | 2019-08-30 | 浙江初光传动科技有限公司 | Ball-screw apparatus and linear rail system |
| CN112740004A (en) * | 2018-10-29 | 2021-04-30 | 日本精工株式会社 | Method for detecting reduction in preload of ball screw and linear actuator |
-
2005
- 2005-03-03 CN CN 200520055185 patent/CN2775396Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277476A (en) * | 2013-04-25 | 2013-09-04 | 苏州市职业大学 | Device capable of eliminating gap between screw and nut |
| CN106043409A (en) * | 2016-07-26 | 2016-10-26 | 钦州学院 | Steering apparatus based on flexible steering of ballscrew |
| CN112740004A (en) * | 2018-10-29 | 2021-04-30 | 日本精工株式会社 | Method for detecting reduction in preload of ball screw and linear actuator |
| CN112740004B (en) * | 2018-10-29 | 2024-03-12 | 日本精工株式会社 | Ball screw preload reduction detection method and linear motion driving device |
| CN110185758A (en) * | 2019-05-06 | 2019-08-30 | 浙江初光传动科技有限公司 | Ball-screw apparatus and linear rail system |
| CN110185758B (en) * | 2019-05-06 | 2022-05-10 | 浙江非攻机械有限公司 | Ball screw device and linear guide rail system |
| CN110107665A (en) * | 2019-06-10 | 2019-08-09 | 湖北工程职业学院 | A kind of accurate precompressed ball screw |
| CN110107665B (en) * | 2019-06-10 | 2023-06-23 | 湖北工程职业学院 | Precision type pre-compaction ball screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liang Xuebing Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150303 Granted publication date: 20060426 |
|
| DD01 | Delivery of document by public notice |
Addressee: Liang Xuebing Document name: Notification of Expiration of Patent Right Duration |