CN202701885U - Ball screw supporting construction - Google Patents
Ball screw supporting construction Download PDFInfo
- Publication number
- CN202701885U CN202701885U CN 201220241308 CN201220241308U CN202701885U CN 202701885 U CN202701885 U CN 202701885U CN 201220241308 CN201220241308 CN 201220241308 CN 201220241308 U CN201220241308 U CN 201220241308U CN 202701885 U CN202701885 U CN 202701885U
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- CN
- China
- Prior art keywords
- screw
- locking nut
- screw mandrel
- synchronous pulley
- outer locking
- 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 ball screw supporting construction, comprising a screw, a pair of supports for supporting the screw and a driving mechanism for driving the screw. Two ends of the screw are supported on the supports through a bearing assembly, one end of the screw is connected with an outer locking nut A and an inner locking nut in threaded connection which are respectively tightly attached to the end surfaces at two sides of one support, and the other end of the screw is connected with an outer locking nut B in threaded connection which is tightly attached to the outer end surface of the other support. After the screw is arranged on the supports, the extension amount of the screw at work is calculated according to the temperature rise, a dial gauge is disposed at the outer end of the screw provided with the outer locking nut A and the inner locking nut simultaneously, the inner locking nut is loosened, the screw is pre-stretched by the outer locking nut A, the stretching amount is controlled through the dial gauge reading, and then the inner locking nut is locked. An axial direction gap is eliminated, the rigidity of the screw is increased, the thermal expansion deformation among a ball, the screw and the nut is minimized, and a high transmission positioning precision is guaranteed.
Description
Technical field
The utility model relates to a kind of ball screw, particularly a kind of ball screw supporting construction.
Background technology
Ball screw is comprised of screw mandrel, nut and ball, and its function is to change into rectilinear motion with rotatablely moving, and it is widely used in various industrial equipments and precision instrument owing to have very little frictional resistance.Ball screw is when being applied to medium-and-large-sized gantry machining center X-axis drive mechanism, because X-axis stroke and workbench load-bearing are larger, roller screw mandrel length is longer, it is easily sagging under Gravitative Loads, and in use, because friction causes temperature height, certain elongation can occur in screw mandrel itself, affects transmission and positioning accuracy.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of ball screw supporting construction of transmission accurate positioning.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of ball screw supporting construction, comprise screw mandrel, the supporting base of a pair of supporting screw mandrel, and the driving mechanism that drives screw mandrel, its innovative point is: described screw mandrel two ends all are bearing on the supporting base by bearing assembly, outer locking nut A and internal locking nut that one end of described screw mandrel is threaded simultaneously and is close to respectively supporting base both sides end face, the screw mandrel other end are threaded and are close to the outer locking nut B of another supporting base outside end face.
Further, described driving mechanism comprises transmission case, synchronous pulley A, synchronous pulley B, Timing Belt and servomotor, described transmission case is arranged on the end that screw mandrel connects outer locking nut B, screw mandrel end key connects synchronous pulley A, the servomotor output shaft end connects synchronous pulley B, synchronous pulley A is connected Timing Belt with synchronous pulley B and connects, and the screw mandrel outermost end is bearing on the transmission case sidewall by deep groove ball bearing.
The utility model has the advantage of: screw mandrel is after being installed on the supporting base, the elongation of screw mandrel when calculating work according to its temperature rise, the screw mandrel outer end of outer locking nut A and internal locking nut is installed at the same time places an amesdial, unclamp the internal locking nut, screw outer locking nut A screw mandrel is carried out prestretched, its amount of tension is by the reading control of amesdial, and then locking internal locking nut.Thereby can eliminate end play, increase the screw mandrel rigidity, reduce ball-screw because of deadweight cause sagging, good transmission positioning accuracy is guaranteed in the thermal expansion distortion between compensation ball body, leading screw and nut.
The end bearing that screw mandrel is connected with driving mechanism carries out aiding support on the sidewall of transmission case, reduce the screw mandrel end and rock, and reduces deflection deformation to the impact of transmission accuracy, and the life-span is low.
Description of drawings
Fig. 1 is the utility model ball screw supporting construction schematic diagram.
The specific embodiment
As shown in Figure 1, comprise screw mandrel 1, supporting base 2, supporting base 3, deep groove ball bearing 4, thrust bearing 5, outer locking nut A6, internal locking nut 7, outer locking nut B8, transmission case 9, synchronous pulley A10, synchronous pulley B11, Timing Belt 12, servomotor 13, deep groove ball bearing 14.
The two ends of above-mentioned screw mandrel 1 all are bearing on the supporting seat 2,3 by bearing assembly, and present embodiment middle (center) bearing assembly is two pairs of symmetrically arranged deep groove ball bearings 4 and thrust bearing 5.
The left end of screw mandrel 1 is threaded simultaneously and is close to respectively outer locking nut A6 and the internal locking nut 7 of supporting base 2 both sides end faces, and screw mandrel 1 other end is threaded and is close to the outer locking nut B8 of another supporting base 3 outside end faces.
The right-hand member of screw mandrel 1 connects driving mechanism, driving mechanism comprises transmission case 9, synchronous pulley A10, synchronous pulley B11, Timing Belt 12 and servomotor 13, transmission case 9 is arranged on the end that screw mandrel connects outer locking nut B, screw mandrel 1 end key connects synchronous pulley A10, servomotor 13 output shaft ends connect synchronous pulley B11, synchronous pulley A10 is connected Timing Belt 12 and connects with synchronous pulley B11, and screw mandrel 1 outermost end is bearing on transmission case 9 sidewalls by deep groove ball bearing 14.
Operation principle: temperature rise calculates the temperature rise elongation during according to screw mandrel 1 work, left end at screw mandrel 1 is placed an amesdial, unscrew internal locking nut 7, screwing outer locking nut A6 stretches to screw mandrel, its amount of tension is by the reading control of amesdial, and then locking internal locking nut 7, realize the prestretched of screw mandrel.
Claims (2)
1. ball screw supporting construction, comprise screw mandrel, the supporting base of a pair of supporting screw mandrel, and the driving mechanism that drives screw mandrel, it is characterized in that: described screw mandrel two ends all are bearing on the supporting base by bearing assembly, outer locking nut A and internal locking nut that one end of described screw mandrel is threaded simultaneously and is close to respectively supporting base both sides end face, the screw mandrel other end are threaded and are close to the outer locking nut B of another supporting base outside end face.
2. ball screw supporting construction according to claim 1, it is characterized in that: described driving mechanism comprises transmission case, synchronous pulley A, synchronous pulley B, Timing Belt and servomotor, described transmission case is arranged on the end that screw mandrel connects outer locking nut B, screw mandrel end key connects synchronous pulley A, the servomotor output shaft end connects synchronous pulley B, synchronous pulley A is connected Timing Belt with synchronous pulley B and connects, and the screw mandrel outermost end is bearing on the transmission case sidewall by deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241308 CN202701885U (en) | 2012-05-28 | 2012-05-28 | Ball screw supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241308 CN202701885U (en) | 2012-05-28 | 2012-05-28 | Ball screw supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202701885U true CN202701885U (en) | 2013-01-30 |
Family
ID=47582225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220241308 Expired - Fee Related CN202701885U (en) | 2012-05-28 | 2012-05-28 | Ball screw supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202701885U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801943A (en) * | 2014-01-16 | 2014-05-21 | 江苏锐成机械有限公司 | Saddle of numerically controlled lathe X-axis ball screw with prestretching device |
| CN105817940A (en) * | 2016-05-24 | 2016-08-03 | 深圳市创世纪机械有限公司 | Transmission assembly and numerical control machine tool |
| CN106181526A (en) * | 2016-07-25 | 2016-12-07 | 迪百仕电机科技（苏州）有限公司 | A kind of numerically controlled lathe traverse feed drive mechanism |
| CN106239235A (en) * | 2016-07-26 | 2016-12-21 | 成都普瑞斯数控机床有限公司 | There is the ball wire rod mechanism of bearing positioning device |
-
2012
- 2012-05-28 CN CN 201220241308 patent/CN202701885U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801943A (en) * | 2014-01-16 | 2014-05-21 | 江苏锐成机械有限公司 | Saddle of numerically controlled lathe X-axis ball screw with prestretching device |
| CN105817940A (en) * | 2016-05-24 | 2016-08-03 | 深圳市创世纪机械有限公司 | Transmission assembly and numerical control machine tool |
| CN106181526A (en) * | 2016-07-25 | 2016-12-07 | 迪百仕电机科技（苏州）有限公司 | A kind of numerically controlled lathe traverse feed drive mechanism |
| CN106239235A (en) * | 2016-07-26 | 2016-12-21 | 成都普瑞斯数控机床有限公司 | There is the ball wire rod mechanism of bearing positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANTONG JINGDING NC EQUIPMENT CO., LTD. Free format text: FORMER OWNER: NANTONG JINGDING MECHANICAL TECHNOLOGY CO., LTD. Effective date: 20140519 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140519 Address after: Ten groups of 226011 Gangzha District Jiangsu city of Nantong Province Qin Zao Jie Dao Yuan Qiao Cun Patentee after: NANTONG JINGDING CNC EQUIPMENT CO., LTD. Address before: Ten groups of 226011 Gangzha District Jiangsu city of Nantong Province Qin Zao Jie Dao Yuan Qiao Cun Patentee before: Nantong Jingding Machinery Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |