CN1719069A - Zero gap speed changing mechanism - Google Patents
Zero gap speed changing mechanism Download PDFInfo
- Publication number
- CN1719069A CN1719069A CNA2005100143896A CN200510014389A CN1719069A CN 1719069 A CN1719069 A CN 1719069A CN A2005100143896 A CNA2005100143896 A CN A2005100143896A CN 200510014389 A CN200510014389 A CN 200510014389A CN 1719069 A CN1719069 A CN 1719069A
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- ball
- screw
- gap
- gear
- load nut
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Abstract
The present invention relates to a gapless speed-changing mechanism, belonging to the field of mechanical transmission. Its structure is characterized by that on its support two rolling screw rods with different leads and guideways are axially parallelly mounted, on said two rolling screw rods respectively are mounted puller nuts, the driving block mounted on the guideway is connected with puller nut, and the axises of two rolling screw rods are coaxial or not coaxial.
Description
Technical field
The present invention relates to mechanical transmission fields, be specially a kind of no gap gear.
Background technique
Robot uses very wide in automatic control and automatic field operation, the various motions of realization or the operation of its energy high-intelligentization, and the motion or the action need of robot satisfy required precision simultaneously.
The revolute joint or the driving arm of robot are driven by retarder by motor usually, and all there is the return gap in each quasi-tradition retarder in the market, and the compensation difficulty, have reduced the performance accuracy of robot.Though can adopt direct drive motor directly to drive without speed reducer, its driving torque is less, and price is very expensive.Therefore, in the robot motion, realize from the drive motor to the revolute joint or the no gap speed change of driving arm, be puzzlement people's a difficult problem always.The rotation angle of the revolute joint of robot generally is not more than 360 ° simultaneously, and for parallel robot, the rotation angle of revolute joint can be littler, and therefore, the speed changer that robot revolute joint drives need not to transfer more.
Summary of the invention
Technical problem to be solved by this invention is: in order to have overcome the deficiency that there is the return gap in traditional retarder, the invention provides a kind of no gap gear, this gear rotation output angle or the number of turns are limited, and it is more suitable in the speed change of robot revolute joint driving.
The present invention solves this technical problem the technological scheme that is adopted: a kind of no gap of the present invention gear, its structure is: bearing (1) is gone up axle different two ball-screws (3) of helical pitch and (4) and guide rail (7) is installed abreast, pre-load nut (2) and (5) are installed respectively on ball-screw (3) and (4), and the drive block (6) that is installed on the guide rail (7) links to each other with (5) with pre-load nut (2).
In the gear of a kind of no gap of the present invention, the axis coaxle of ball-screw (3) and (4).
In the gear of a kind of no gap of the present invention, the axis disalignment of ball-screw (3) and (4).
The invention has the beneficial effects as follows: this gear rotation output angle or the number of turns are limited, and owing to adopt the pre-load nut ball-screw, there is not the return gap in it, has the transmission accuracy advantages of higher, is more suitable for the speed change that drives in robot revolute joint.
Description of drawings
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the coaxial no gap gear of a kind of two leading screws of the present invention.
Fig. 2 does not have the structural representation of gap gear for another kind of two leading screw out-of-alignments of the present invention.
Among the figure, 1. bearing, 2. pre-load nut, 3. ball-screw, 4. ball-screw, 5. pre-load nut, 6. drive block, 7. guide rail.
Embodiment
Embodiment 1
Fig. 1 represents that a kind of bearing (1) that does not have a gap gear of the present invention goes up axle different two ball-screws (3) of helical pitch and (4) and guide rail (7) are installed abreast, pre-load nut (2) and (5) are installed respectively on ball-screw (3) and (4), the drive block (6) that is installed on the guide rail (7) links to each other the axis coaxle of two ball-screws (3) and (4) with (5) with pre-load nut (2).
A kind of working principle of not having the gap gear of the present invention shown in Figure 1 is: if ball-screw (3) revolution, pre-load nut (2) move left and right then, drive drive block (6) and pre-load nut (5) along guide rail (7) move left and right, the move left and right of pre-load nut (5) makes ball-screw (4) turn round.If ball-screw (3) is different with ball-screw (4) helical pitch, then the rotating speed difference of two ball-screws.The helical pitch of supposing ball-screw (3) is s1, and the helical pitch of ball-screw (4) is s2, and then the rotating ratio of ball-screw (3) and ball-screw (4) is s2/s1.If ball-screw (3) is identical with the Hand of spiral of ball-screw (4), then two ball-screw sense of rotation are identical, otherwise if the Hand of spiral of ball-screw (3) and ball-screw (4) is opposite, then two ball-screw sense of rotation are opposite.
Fig. 2 represents that a kind of bearing (1) that does not have a gap gear of the present invention goes up axle different two ball-screws (3) of helical pitch and (4) and guide rail (7) are installed abreast, pre-load nut (2) and (5) are installed respectively on ball-screw (3) and (4), the drive block (6) that is installed on the guide rail (7) links to each other the axis disalignment of two ball-screws (3) and (4) with (5) with pre-load nut (2).
A kind of working principle of not having the gap gear of the present invention shown in Figure 2 is: if ball-screw (3) revolution, pre-load nut (2) move left and right then, drive drive block (6) and pre-load nut (5) along guide rail (7) move left and right, the move left and right of pre-load nut (5) makes ball-screw (4) turn round.If ball-screw (3) is different with ball-screw (4) helical pitch, then the rotating speed difference of two ball-screws.The helical pitch of supposing ball-screw (3) is s1, and the helical pitch of ball-screw (4) is s2, and then the rotating ratio of ball-screw (3) and ball-screw (4) is s2/s1.If ball-screw (3) is identical with the Hand of spiral of ball-screw (4), then two ball-screw sense of rotation are identical, otherwise if the Hand of spiral of ball-screw (3) and ball-screw (4) is opposite, then two ball-screw sense of rotation are opposite.
Claims (3)
1. no gap gear, it is characterized in that: bearing (1) is gone up axle different two ball-screws (3) of helical pitch and (4) and guide rail (7) is installed abreast, pre-load nut (2) and (5) are installed respectively on ball-screw (3) and (4), and the drive block (6) that is installed on the guide rail (7) links to each other with (5) with pre-load nut (2).
2. a kind of no gap as claimed in claim 1 gear is characterized by the axis coaxle of ball-screw (3) and (4).
3. a kind of no gap as claimed in claim 1 gear is characterized in that: the axis disalignment of ball-screw (3) and (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100143896A CN1719069A (en) | 2005-07-06 | 2005-07-06 | Zero gap speed changing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100143896A CN1719069A (en) | 2005-07-06 | 2005-07-06 | Zero gap speed changing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1719069A true CN1719069A (en) | 2006-01-11 |
Family
ID=35930975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100143896A Pending CN1719069A (en) | 2005-07-06 | 2005-07-06 | Zero gap speed changing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1719069A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277475A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院长春光学精密机械与物理研究所 | High-precision constant-transmission-ratio transmission mechanism based on ball screws |
| CN104308857A (en) * | 2014-09-30 | 2015-01-28 | 黄国哲 | Robot joint reduction gear |
| CN106545630A (en) * | 2015-09-18 | 2017-03-29 | 南京大量数控科技有限公司 | Speed reduction gearing |
| CN106958638A (en) * | 2016-01-08 | 2017-07-18 | 南京大量数控科技有限公司 | Reducing gear |
| CN106958637A (en) * | 2016-01-08 | 2017-07-18 | 南京大量数控科技有限公司 | Deceleration device |
| CN110017357A (en) * | 2019-03-22 | 2019-07-16 | 湖北三江航天万峰科技发展有限公司 | A kind of auto-manual straight-line motion mechanism and auto-manual operating method |
-
2005
- 2005-07-06 CN CNA2005100143896A patent/CN1719069A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277475A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院长春光学精密机械与物理研究所 | High-precision constant-transmission-ratio transmission mechanism based on ball screws |
| CN104308857A (en) * | 2014-09-30 | 2015-01-28 | 黄国哲 | Robot joint reduction gear |
| CN104308857B (en) * | 2014-09-30 | 2017-06-16 | 黄国哲 | Joint of robot deceleration device |
| CN106545630A (en) * | 2015-09-18 | 2017-03-29 | 南京大量数控科技有限公司 | Speed reduction gearing |
| CN106958638A (en) * | 2016-01-08 | 2017-07-18 | 南京大量数控科技有限公司 | Reducing gear |
| CN106958637A (en) * | 2016-01-08 | 2017-07-18 | 南京大量数控科技有限公司 | Deceleration device |
| CN110017357A (en) * | 2019-03-22 | 2019-07-16 | 湖北三江航天万峰科技发展有限公司 | A kind of auto-manual straight-line motion mechanism and auto-manual operating method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |