CN109723781A - A kind of lead screw anti-rotation device of compact - Google Patents
A kind of lead screw anti-rotation device of compact Download PDFInfo
- Publication number
- CN109723781A CN109723781A CN201711037532.2A CN201711037532A CN109723781A CN 109723781 A CN109723781 A CN 109723781A CN 201711037532 A CN201711037532 A CN 201711037532A CN 109723781 A CN109723781 A CN 109723781A
- Authority
- CN
- China
- Prior art keywords
- shell
- lead screw
- ball
- bull stick
- screw
- 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.)
- Pending
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The invention belongs to lead screw anti-rotation technical fields, and in particular to a kind of lead screw anti-rotation device of compact；The purpose of the present invention provides a kind of lead screw anti-rotation device of compact for solving the problems, such as axial space deficiency；Including anti-bull stick fixed shell (1), anti-bull stick (2), anti-bull stick fixing screws (3), ball nut (4), bearing (5), ball-screw (6) and lead screw shell (7)；Wherein the shell (1) and lead screw shell (7) are to lead to shell in semi-enclosed, and the shell (1), which docks with the larger open end of lead screw shell (7) and passes through screw, constitutes hollow housing；One end of the anti-bull stick (2) is fixed on the bottom of anti-bull stick fixed shell (1) by anti-bull stick fixing screws (3), ball nut (4) is fixed on lead screw shell (7) by a pair of bearings (5), and ball-screw (6), ball nut (4) and ball constitute ball screw assembly,.
Description
Technical field
The invention belongs to lead screw anti-rotation technical fields, and in particular to a kind of lead screw anti-rotation device of compact.
Background technique
Ball screw assembly, is a kind of common mechanism in the transmission mechanism for converting linear motion for rotary motion.It is answering
In, the component to do reciprocating linear motion needs to limit the freedom degree of its direction of rotation.When ball-screw needs to make reciprocating linear
When movement, usually increase anti-rotation device in ball-screw one end, but such mode needs axial space very big, for stroke
Centainly, the short and small occasion in space is not applicable.
Summary of the invention
The purpose of the present invention, in view of the shortcomings of the prior art, providing a kind of compact for solving the problems, such as axial space deficiency
Lead screw anti-rotation device.
The technical scheme is that
A kind of lead screw anti-rotation device of compact, it is characterised in that: including anti-bull stick fixed shell, anti-bull stick, anti-bull stick
Fixing screws, ball nut, bearing, ball-screw and lead screw shell；Wherein the shell and lead screw shell are semi-enclosed
In lead to shell, the shell, which docks with the larger open end of lead screw shell and passes through screw, constitutes hollow housing；The anti-bull stick
One end the bottom of the fixed shell of anti-bull stick is fixed on by anti-bull stick fixing screws, ball nut is fixed on by a pair of bearings
On lead screw shell, ball-screw, ball nut and ball constitute ball screw assembly,.
The ball-screw is hollow structure, and there are two be in 180 ° of long keyway being arranged symmetrically in interstitial hole.
The anti-bull stick is in the form of a column structure, and there are two be in 180 ° of feather keys being arranged symmetrically on the part playing the guiding role.
The feather key inner end have one for limit annular projection.
The long keyway of the ball-screw and the feather key of anti-bull stick are used cooperatively.
The ball nut is fixed on lead screw shell by bearing.
The beneficial effects of the present invention are:
Anti-bull stick of the present invention is fixed on the fixed shell of anti-bull stick by anti-bull stick fixing screws, and ball nut passes through bearing
It is fixed on lead screw shell, ball-screw, ball nut and ball constitute ball screw assembly, and ball-screw is hollow structure, rolling
Two are in 180 ° of feather keys being arranged symmetrically in two on 180 ° of long keyway being arranged symmetrically and anti-bull stick in ballscrew interstitial hole
It is rotated with the use of limitation ball-screw is played the role of.
Structure of the invention is compact, substantially reduces the axial length of ball screw assembly, meets axial space is small, stroke is long etc.
Stringent condition.The long keyway that is arranged symmetrically in 180 ° in 180 ° of feather keys being arranged symmetrically with the use of for Redundancy Design,
Improve the reliability of anti-rotation.Ball-screw is hollow structure, alleviates device overall weight.
Detailed description of the invention
Fig. 1 is a kind of main view sectional view of compact lead screw anti-rotation device；
Fig. 2 is anti-bull stick schematic diagram.
Specific embodiment
The present invention is further introduced with embodiment with reference to the accompanying drawing:
A kind of lead screw anti-rotation device of compact, including the fixed shell 1 of anti-bull stick, anti-bull stick 2, anti-bull stick fixing screws 3,
Ball nut 4, bearing 5, ball-screw 6 and lead screw shell 7；Wherein the shell 1 is to lead in semi-enclosed with lead screw shell 7
Shell, the shell 1, which docks with the larger open end of lead screw shell 7 and passes through screw, constitutes hollow housing；The anti-bull stick 2
One end is fixed on the bottom of the fixed shell 1 of anti-bull stick by anti-bull stick fixing screws 3, and ball nut 4 is fixed by a pair of bearings 5
On lead screw shell 7, ball-screw 6, ball nut 4 and ball constitute ball screw assembly,.
The ball-screw 6 is hollow structure, and there are two be in 180 ° of long keyway being arranged symmetrically in interstitial hole.
The anti-bull stick 2 is in the form of a column structure, and there are two be in 180 ° of feather keys being arranged symmetrically on the part playing the guiding role.
The feather key inner end have one for limit annular projection.
The long keyway of the ball-screw 6 and the feather key of anti-bull stick 2 are used cooperatively.
The ball nut 4 is fixed on lead screw shell 7 by bearing.
As shown in Fig. 2, anti-bull stick 2 is an integral structure, it is in the form of a column structure, there are two be on the part playing the guiding role
180 ° of feather keys being arranged symmetrically, and have an annular projection in feather key inner end, it is used for mechanical position limitation, prevents ball-screw
Excessively retract.
Anti-bull stick 2 is fixed on the fixed shell 1 of anti-bull stick by anti-bull stick fixing screws 3, and ball nut 4 passes through a pair of of axis
It holds 5 to be fixed on lead screw shell 7, ball-screw 6, ball nut 4 and ball constitute ball screw assembly, and ball-screw 6 is hollow
Structure, two are in 180 ° with two in anti-bull stick 2 in 180 ° of long keyway being arranged symmetrically and are arranged symmetrically in 6 interstitial hole of ball-screw
Feather key with the use of play the role of limit ball-screw 6 rotate.
Claims (6)
1. a kind of lead screw anti-rotation device of compact, it is characterised in that: including anti-bull stick fixed shell (1), anti-bull stick (2), prevent
Bull stick fixing screws (3), ball nut (4), bearing (5), ball-screw (6) and lead screw shell (7)；The wherein shell (1)
It is to lead to shell in semi-enclosed with lead screw shell (7), the shell (1) is docked simultaneously with the larger open end of lead screw shell (7)
Hollow housing is constituted by screw；One end of the anti-bull stick (2) is fixed on anti-bull stick and is fixed by anti-bull stick fixing screws (3)
The bottom of shell (1), ball nut (4) are fixed on lead screw shell (7) by a pair of bearings (5), ball-screw (6), ball
Nut (4) and ball constitute ball screw assembly,.
2. a kind of lead screw anti-rotation device of compact as described in claim 1, it is characterised in that: the ball-screw (6) is
Hollow structure, and there are two be in 180 ° of long keyway being arranged symmetrically in interstitial hole.
3. a kind of lead screw anti-rotation device of compact as described in claim 1, it is characterised in that: the anti-bull stick (2) is in column
Shape structure, there are two be in 180 ° of feather keys being arranged symmetrically on the part playing the guiding role.
4. a kind of lead screw anti-rotation device of compact as claimed in claim 3, it is characterised in that: the feather key inner end has
One annular projection for limit.
5. a kind of lead screw anti-rotation device of compact as claimed in claim 2 or claim 3, it is characterised in that: the ball-screw (6)
Long keyway and the feather key of anti-bull stick (2) be used cooperatively.
6. a kind of lead screw anti-rotation device of compact as described in claim 1, it is characterised in that: the ball nut (4) is logical
Bearing is crossed to be fixed on lead screw shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037532.2A CN109723781A (en) | 2017-10-30 | 2017-10-30 | A kind of lead screw anti-rotation device of compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037532.2A CN109723781A (en) | 2017-10-30 | 2017-10-30 | A kind of lead screw anti-rotation device of compact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109723781A true CN109723781A (en) | 2019-05-07 |
Family
ID=66291518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711037532.2A Pending CN109723781A (en) | 2017-10-30 | 2017-10-30 | A kind of lead screw anti-rotation device of compact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109723781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228545A (en) * | 2019-05-16 | 2019-09-13 | 深圳市优必选科技有限公司 | A kind of linear joint and leg biped robot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201972999U (en) * | 2011-02-16 | 2011-09-14 | 袁天钢 | Mechanical interlocking type oil cylinder |
| US20120067204A1 (en) * | 2008-11-13 | 2012-03-22 | Atrion Medical Products, Inc. | Actuating mechanism for fluid displacement and pressurizing device |
| CN103795221A (en) * | 2012-10-31 | 2014-05-14 | 上海鸣志电器股份有限公司 | Stepping linear motor equipped with rotation-proof screw rod |
| CN103807398A (en) * | 2013-12-17 | 2014-05-21 | 兰州空间技术物理研究所 | Combined-type movement mechanism |
| CN104310166A (en) * | 2014-10-31 | 2015-01-28 | 江苏泰隆减速机股份有限公司 | Worm and gear elevator |
| DE102015209600A1 (en) * | 2015-05-26 | 2016-12-01 | Schaeffler Technologies AG & Co. KG | Ball Screw |
-
2017
- 2017-10-30 CN CN201711037532.2A patent/CN109723781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120067204A1 (en) * | 2008-11-13 | 2012-03-22 | Atrion Medical Products, Inc. | Actuating mechanism for fluid displacement and pressurizing device |
| CN201972999U (en) * | 2011-02-16 | 2011-09-14 | 袁天钢 | Mechanical interlocking type oil cylinder |
| CN103795221A (en) * | 2012-10-31 | 2014-05-14 | 上海鸣志电器股份有限公司 | Stepping linear motor equipped with rotation-proof screw rod |
| CN103807398A (en) * | 2013-12-17 | 2014-05-21 | 兰州空间技术物理研究所 | Combined-type movement mechanism |
| CN104310166A (en) * | 2014-10-31 | 2015-01-28 | 江苏泰隆减速机股份有限公司 | Worm and gear elevator |
| DE102015209600A1 (en) * | 2015-05-26 | 2016-12-01 | Schaeffler Technologies AG & Co. KG | Ball Screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228545A (en) * | 2019-05-16 | 2019-09-13 | 深圳市优必选科技有限公司 | A kind of linear joint and leg biped robot |
| US11485028B2 (en) | 2019-05-16 | 2022-11-01 | Ubtech Robotics Corp Ltd | Linear joint and legged robot having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8544357B2 (en) | Differential roller screw | |
| JP5955309B2 (en) | Electric linear actuator and electric motor thereof | |
| ES2868881T3 (en) | Preload device for a rotating guided roller screw mechanism | |
| CN108331813B (en) | Band-type brake locking device | |
| CN109723781A (en) | A kind of lead screw anti-rotation device of compact | |
| JP2018113729A (en) | Linear actuator | |
| CN202228620U (en) | Ball screw pair of internal circulation reverse structure | |
| EP1067315A3 (en) | Ball screw with ball retainer | |
| JP6187109B2 (en) | Ball screw | |
| CN201593594U (en) | Ball screw | |
| JP2017075699A (en) | Torque-transmittable linear bush | |
| US10115545B2 (en) | Actuating method and device for a helicoidal switch | |
| KR101468495B1 (en) | Ball screw nut module of fixed type and small linear actuator having the same | |
| EP2891829A3 (en) | Electromechanical actuator proximal position stopping assembly | |
| CN103956852A (en) | Motor wholly-moving type two-level electric cylinder | |
| CN202228619U (en) | Steel ball reversing mechanism for ball screw assembly | |
| CN107165940A (en) | A kind of adaptive high-precision bearing face retaining element | |
| CN204301705U (en) | A kind of linear movement pick-up miniaturization swivel link shelf structure | |
| CN108331892A (en) | Linear actuators | |
| CN207005090U (en) | Adaptive high-precision bearing face retaining element | |
| JP2014202235A (en) | Rotation type attenuation device | |
| CN109732108A (en) | Centre with endlong movement | |
| CN104595446A (en) | Novel blockage preventing device for electromechanical actuator | |
| CN206366607U (en) | A kind of mould guide | |
| CN104565702B (en) | Height and direction adjustment mechanism for small instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190507 |