CN203906696U - Screw rod assembly and prestretching structure thereof - Google Patents
Screw rod assembly and prestretching structure thereof Download PDFInfo
- Publication number
- CN203906696U CN203906696U CN201420197651.XU CN201420197651U CN203906696U CN 203906696 U CN203906696 U CN 203906696U CN 201420197651 U CN201420197651 U CN 201420197651U CN 203906696 U CN203906696 U CN 203906696U
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- China
- Prior art keywords
- joint
- screw
- ball screw
- bearing
- connecting part
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- Expired - Fee Related
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Abstract
The utility model discloses a screw rod assembly and a prestretching structure thereof. The screw rod assembly comprises a ball screw, a coupler, a servo motor, bearings, space rings and bearing glands, wherein threads are integrally formed on the ball screw; a feed screw nut and the threads are in clearance fit and cup joint; a first sleeving part, a second connecting part and a transmission part are arranged on the left end of the ball screw in sequence; a third connecting part, a second sleeving part and a second connecting part are arranged on the right end of the ball screw in sequence; a plurality of bearings sleeve the first sleeving part and the second sleeving part; the bearing glands are arranged outside the bearings; the space rings are arranged on two ends of the bearings on the first sleeving part and the position, close to the second connecting part, of the second sleeving part; a first lock nut, a third lock nut and a second lock nut are respectively in threaded connection with the first connecting part, the third connecting part and the second connecting part; the servo motor is connected with the transmission part by the coupler. The screw rod assembly and the prestretching structure thereof have the beneficial effects that the connection is firm and stable, the transmission is smooth, the positioning precision is improved, the service life is long, and the interference is prevented.
Description
Technical field
The utility model relates to the technical field of screw mandrel, particularly a kind of screw component and pre-pull-up structure thereof.
Background technique
Ball screw is that rotation motion is converted into straight line motion, or straight line motion is converted into the desirable product of rotation motion.Ball screw is made up of screw rod, nut and ball.Its function is to change into straight line motion by rotatablely moving, and this is further extension and the development of ball screw, and the significance of this development becomes bearing into sliding action from scroll actions exactly.Owing to having very little surface friction drag, ball screw is widely used in various industry equipments and precision type instrument.Present ball screw is on the market various in style, and the Placement of screw mandrel is that two ends connect, but this connection is not tight, is easy to damage, and working life is not long, and structure driven is unstable.
Model utility content
For addressing the above problem, the purpose of this utility model be to provide a kind of novel structure, stable connection firmly, transmission screw component and pre-pull-up structure thereof smoothly.
For achieving the above object, the technical solution of the utility model:
A kind of screw component and pre-pull-up structure thereof, comprise ball screw, coupling, actuating motor, bearing, spacer ring, bearing gland, on described ball screw, integral type is provided with screw thread, feed screw nut coordinates socket with thread pitch, ball screw left end is followed successively by the first belled part, the first joint and transmission unit, ball screw right-hand member is followed successively by the 3rd joint, the second belled part and the second joint, on the first belled part and the second belled part, be all socketed with some bearings, bearing outer installment has bearing gland, the first upper bearing (metal) two ends, belled part and the second belled part are equipped with spacer ring near the second joint place, the first joint, the 3rd joint and first locking nut that has been threaded respectively on the second joint, the 3rd locking nut and the second locking nut, actuating motor is connected with transmission unit by coupling.
As preferably, described transmission unit is provided with keyway.
As preferably, the bearing gland of described right-hand member is outside equipped with bearing support.
As preferably, described the first joint, the second joint and the 3rd joint are screw thread setting.
Beneficial conditions of the present utility model is: stable connection is firm, and transmission is smooth and easy, improves positioning precision, and long perfomance life prevents from interfering.
Brief description of the drawings
Fig. 1 is plan view of the present utility model.
Fig. 2 is internal structure schematic diagram of the present utility model.
Fig. 3 is the utility model ball screw structural representation.
Embodiment
As Fig. 1, 2, shown in 3, a kind of screw component and pre-pull-up structure thereof, comprise ball screw 1, coupling 6, actuating motor 7, bearing 11, spacer ring 17, bearing gland 12, on described ball screw 1, integral type is provided with screw thread, feed screw nut 2 coordinates socket with thread pitch, ball screw 1 left end is followed successively by the first belled part 3, the first joint 4 and transmission unit 5, ball screw 1 right-hand member is followed successively by the 3rd joint 8, the second belled part 10 and the second joint 9, on the first belled part 3 and the second belled part 10, be all socketed with some bearings 11, bearing 11 outer installment have bearing gland 12, the first 3 upper bearing (metal) 11 two ends, belled part and the second belled part 10 are equipped with spacer ring 17 near the second joint 9 places, the first joint 4, the 3rd joint 8 and first locking nut 14 that has been threaded respectively on the second joint 9, the 3rd locking nut 16 and the second locking nut 15, actuating motor 7 is connected with transmission unit 5 by coupling 6.Described transmission unit 5 is provided with keyway.The bearing gland 12 of described right-hand member is outside equipped with bearing support 13.Described the first joint 3, the second joint 9 and the 3rd joint 8 are screw thread setting.Feed screw nut 2 of the present utility model is for being socketed in mobile use on ball screw 1, when connecting, ball screw 1 first regulates the first locking nut 14, then regulate the second locking nut 15, make ball screw 1 have certain pulling force at length direction, the thermal expansion of compensation ball screw 1, improve positioning precision, finally regulate the 3rd locking nut 16, complete installation, connect closely stable, long perfomance life, bearing 11 on the first belled part 3 and the second belled part 10 uses for ball screw 1 is rotated, spacer ring 17 makes bearing 11 and being connected of other parts can be more stable, prevent from interfering, bearing gland 12 not only has protective action to bearing 11, and make to connect more stable, actuating motor 7 drives transmission unit 5 that ball screw 1 is rotated by coupling 6, thereby feed screw nut 2 is rotated, thereby operation, keyway on transmission unit 5 makes to connect firm position, can not be offset damage, bearing support 13 on bearing gland 12 is to use for connection.
Claims (4)
1. a screw component and pre-pull-up structure thereof, comprise ball screw (1), coupling (6), actuating motor (7), bearing (11), spacer ring (17), bearing gland (12), it is characterized in that, the upper integral type of described ball screw (1) is provided with screw thread, feed screw nut (2) coordinates socket with thread pitch, ball screw (1) left end is followed successively by the first belled part (3), the first joint (4) and transmission unit (5), ball screw (1) right-hand member is followed successively by the 3rd joint (8), the second belled part (10) and the second joint (9), on the first belled part (3) and the second belled part (10), be all socketed with some bearings (11), bearing (11) outer installment has bearing gland (12), spacer ring (17) is located to be equipped with near the second joint (9) in upper bearing (metal) (11) two ends, the first belled part (3) and the second belled part (10), the first joint (4), the 3rd joint (8) and the first locking nut (14) that has been threaded respectively on the second joint (9), the 3rd locking nut (16) and the second locking nut (15), actuating motor (7) is connected with transmission unit (5) by coupling (6).
2. a kind of screw component according to claim 1 and pre-pull-up structure thereof, is characterized in that, described transmission unit (5) is provided with keyway.
3. a kind of screw component according to claim 1 and pre-pull-up structure thereof, is characterized in that, the bearing gland (12) of described right-hand member is outside equipped with bearing support (13).
4. a kind of screw component according to claim 1 and pre-pull-up structure thereof, is characterized in that, described the first joint (4), the second joint (9) are screw thread setting with the 3rd joint (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197651.XU CN203906696U (en) | 2014-04-23 | 2014-04-23 | Screw rod assembly and prestretching structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197651.XU CN203906696U (en) | 2014-04-23 | 2014-04-23 | Screw rod assembly and prestretching structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906696U true CN203906696U (en) | 2014-10-29 |
Family
ID=51780977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197651.XU Expired - Fee Related CN203906696U (en) | 2014-04-23 | 2014-04-23 | Screw rod assembly and prestretching structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792346A (en) * | 2017-09-30 | 2018-03-13 | 中国科学院长春光学精密机械与物理研究所 | Motor feed screw nut component, steering wheel and aircraft |
-
2014
- 2014-04-23 CN CN201420197651.XU patent/CN203906696U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792346A (en) * | 2017-09-30 | 2018-03-13 | 中国科学院长春光学精密机械与物理研究所 | Motor feed screw nut component, steering wheel and aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20170423 |