CN114321304A - Damping-adjustable linear fine adjustment mechanism - Google Patents
Damping-adjustable linear fine adjustment mechanism Download PDFInfo
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- CN114321304A CN114321304A CN202210031660.0A CN202210031660A CN114321304A CN 114321304 A CN114321304 A CN 114321304A CN 202210031660 A CN202210031660 A CN 202210031660A CN 114321304 A CN114321304 A CN 114321304A
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- transmission shaft
- fine adjustment
- friction ring
- adjustment mechanism
- worm wheel
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 230000001360 synchronised effect Effects 0.000 claims abstract description 40
- 238000013016 damping Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a linear fine adjustment mechanism with adjustable damping, which comprises a transmission shaft, wherein a synchronous belt wheel is arranged on the outer side of the transmission shaft, the synchronous belt wheel is fixed with the transmission shaft through a screw, an external tooth surface of the synchronous belt wheel is connected with a synchronous toothed belt in a meshing manner, a target part is fixedly arranged on the synchronous toothed belt, a spring seat and a friction ring are arranged at the lower part of the transmission shaft, and a spring is arranged between the spring seat and the friction ring; the invention adopts a worm gear mechanism to directly drive a synchronous belt wheel and a synchronous toothed belt through the friction ring, and the synchronous toothed belt drives a target part to do linear movement, thereby realizing the fine adjustment of the position of the linearly moving target part, and having small transmission backlash and high adjustment precision.
Description
Technical Field
The invention relates to the technical field of linear fine adjustment mechanisms, in particular to a linear fine adjustment mechanism with adjustable damping.
Background
The linear fine adjustment mechanism generally comprises a fine adjustment knob, a speed reduction mechanism and a driving module. The driving module is connected with the target component, and can convert angular displacement into linear displacement through rotating the fine adjustment knob, decelerating through the decelerating mechanism and the driving module, so as to realize fine adjustment of the moving position of the target component. The linear fine adjustment mechanism can be widely applied to equipment devices such as machine tools, microscopes, valves, operating devices, measuring instruments and the like.
The existing linear fine adjustment mechanism can realize fine adjustment of the position of a linearly moving target component by rotating a fine adjustment knob, but when the fine adjustment knob is static and directly drives the target component to do linear movement, the damping force applied by the linear fine adjustment mechanism when the target component moves cannot be continuously adjusted.
Disclosure of Invention
The invention aims to provide a linear fine adjustment mechanism with adjustable damping, which adopts a worm gear mechanism to directly drive a synchronous belt wheel and a synchronous toothed belt through a friction ring, and the synchronous toothed belt drives a target part to do linear movement, thereby realizing fine adjustment of the position of the linearly-moved target part, and having small transmission backlash and high adjustment precision.
The purpose of the invention can be realized by the following technical scheme:
a linear fine adjustment mechanism with adjustable damping comprises a transmission shaft, wherein a synchronous belt wheel is arranged on the outer side of the transmission shaft and fixed with the transmission shaft through a screw, a synchronous toothed belt is meshed with the outer tooth surface of the synchronous belt wheel, a target part is fixedly arranged on the synchronous toothed belt, a spring seat and a friction ring are arranged on the lower portion of the transmission shaft, and a spring is arranged between the spring seat and the friction ring; a worm gear sleeve is arranged on a shaft neck at the lower part of the transmission shaft and located below the friction ring, a worm gear is arranged on the periphery of the worm gear sleeve in a matched mode, and a fine adjustment knob used for driving the worm gear to rotate is arranged on the side face of the worm gear.
As a further scheme of the invention: the shaft neck of the transmission shaft is provided with an external thread, the external thread of the transmission shaft is provided with a locking nut in a threaded manner, the spring seat is arranged below the locking nut, and the locking nut is used for adjusting the height position of the spring seat on the transmission shaft.
As a further scheme of the invention: and a connecting key groove is formed in the shaft neck below the external thread of the transmission shaft, a connecting key is installed in the connecting key groove, and the connecting key is installed in a matching manner with the spring seat and the friction ring.
As a further scheme of the invention: an upper bearing seat is arranged at the upper part journal of the transmission shaft, and a lower bearing seat is arranged at the lower part journal of the transmission shaft.
As a further scheme of the invention: the lower shaft neck of the transmission shaft is provided with a flat key groove, a flat key is arranged in the flat key groove, and an inner hole of the worm gear sleeve is matched with the lower shaft neck and the flat key of the transmission shaft.
As a further scheme of the invention: the worm wheel and the worm wheel sleeve rotate relatively, the worm wheel is in contact with the lower end face of the friction ring, and the worm wheel and the friction ring rotate relatively.
As a further scheme of the invention: the worm structure is arranged below the fine adjustment knob, the worm structure below the fine adjustment knob is meshed with the worm wheel, and the fine adjustment knob is rotated to control the worm wheel to rotate.
The invention has the beneficial effects that:
(1) a worm gear mechanism is adopted to directly drive a synchronous belt wheel and a synchronous toothed belt through a friction ring, and the synchronous toothed belt drives a target part to do linear movement, so that the position of the linearly-moved target part is finely adjusted, the transmission backlash is small, and the adjustment precision is high; when the target component is directly driven to move linearly, the fine adjustment knob can be kept static, and the continuous adjustment of the damping force applied to the target component during moving can be realized by adjusting the compression nut, namely the damping is continuously adjustable.
(2) The synchronous belt wheel is fixedly arranged on the transmission shaft, the inner tooth surface of the synchronous toothed belt is meshed with the outer tooth surface of the synchronous belt wheel, the target component is fixedly arranged on the synchronous toothed belt, the worm structure is arranged below the fine adjustment knob and is meshed with the worm wheel, the worm wheel and the transmission shaft are rotated by rotating the fine adjustment knob, and therefore the target component is moved, and the function of linear fine adjustment is achieved.
(3) The worm wheel contacts with the lower terminal surface of friction ring, and the spring is installed in proper order to friction ring top, spring holder and lock nut, and the lock nut cooperation is installed on the external screw thread of transmission shaft, and friction ring and spring holder cooperation are installed on the axle journal of transmission shaft to prevent that friction ring and spring holder from rotatory relative transmission shaft through the connecting key, rotatory lock nut can change the dynamic friction power size that produces when the relative rotation takes place for the contact surface between friction ring and the worm wheel, thereby realize the function of damping force size continuous adjustment.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a drive shaft; 2. a synchronous pulley; 3. a screw; 4. a synchronous toothed belt; 5. a target component; 6. locking the nut; 7. a spring seat; 8. a connecting bond; 9. a spring; 10. a friction ring; 11. a worm gear sleeve; 12. a flat bond; 13. a worm gear; 14. finely adjusting a knob; 15. an upper bearing seat; 16. and a lower bearing seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention is a linear fine adjustment mechanism with adjustable damping, wherein a synchronous pulley 2 is installed on the outer side of a transmission shaft 1, the synchronous pulley 2 is fixed with the transmission shaft 1 through a screw 3, the inner tooth surface of the synchronous toothed belt 4 is engaged with the outer tooth surface of the synchronous pulley 2, a target component 5 is installed and fixed on the synchronous toothed belt 4, the transmission shaft 1 is driven to rotate to move the target component 5, the target component 5 is driven to move to rotate the transmission shaft 1, a lock nut 6 is installed on the outer thread of the transmission shaft 1 below the synchronous pulley 2, a spring seat 7 is installed below the lock nut 6, a connecting key 8 is installed in a key groove of a journal below the outer thread of the transmission shaft 1, an inner hole of the spring seat 7 is matched with the journal below the outer thread of the transmission shaft 1 and the connecting key 8, the spring seat 7 can move up and down along the journal below the outer thread of the transmission shaft 1, the spring 9 is contacted with the spring seat 7 and is arranged below the spring seat 7, the friction ring 10 is contacted with the spring 9 and is arranged below the spring 9, an inner hole of the friction ring 10 is matched with a shaft neck below an external thread of the transmission shaft 1 and a connecting key 8, the friction ring 10 can move up and down along the shaft neck below the external thread of the transmission shaft 1, the worm wheel sleeve 11 is arranged on the shaft neck below the transmission shaft 1, a flat key 12 is arranged in a key groove of the shaft neck below the transmission shaft 1, an inner hole of the worm wheel sleeve 11 is matched with the shaft neck below the transmission shaft 1 and the flat key 12, the worm wheel 13 is arranged on the shaft neck of the worm wheel sleeve 11 in a matching way, the worm wheel 13 can rotate relative to the worm wheel sleeve 11, the worm wheel 13 is contacted with the lower end face of the friction ring 10, the worm wheel 13 can rotate relative to the friction ring 10, a fine adjustment knob 14 is arranged on the side face of the worm wheel 13, a worm structure is arranged below the fine adjustment knob 14, the worm structure below the fine adjustment knob is meshed with the worm wheel 13, rotation of the fine adjustment knob 14 causes the worm gear 13 to rotate. The upper bearing housing 15 and the lower bearing housing 16 are respectively mounted on the uppermost journal and the lowermost journal of the drive shaft 1, and the drive shaft 1 is rotatable relative to the upper bearing housing 15 and the lower bearing housing 16. When the driving target member 5 moves, the friction ring 10 rotates along with the transmission shaft 1, and since the worm wheel 13 cannot rotate under the limitation of the worm structure below the fine adjustment knob 14, the contact surface between the friction ring 10 and the worm wheel 13 rotates relatively to generate a dynamic friction force, thereby generating a damping force for the movement of the target member 5.
The spring seat 7 can move up and down by rotating the lock nut 6, so that the compression amount of the spring 9 is changed, the pressing force between the friction ring 10 and the worm wheel 13 is changed, the dynamic friction force generated when the contact surface between the friction ring 10 and the worm wheel 13 rotates relatively is changed, and the function of continuously adjusting the damping force received when the target component 5 moves is realized. Make the frictional force between friction ring 10 and the worm wheel 13 enable to make the worm wheel 13 drive the friction ring 10 rotatory and do not take place relative rotation through adjusting lock nut 6, when rotatory fine setting knob 14, worm wheel 13 will produce rotatoryly, thereby it is rotatory to drive friction ring 10, thereby it is rotatory to drive transmission shaft 1, thereby make target part 5 produce and remove, because there is certain reduction ratio between worm structure and the worm wheel 13 of fine setting knob 14 below, and synchronous pulley 2's reference circle diameter is less than the reference circle diameter of worm wheel 13, the removal that makes target part 5 produce through rotatory fine setting knob 14 becomes slight because of slowing down, thereby realize the function of sharp fine setting.
The synchronous belt wheel 2 is fixedly arranged on the transmission shaft 1, the inner tooth surface of the synchronous toothed belt 4 is meshed with the outer tooth surface of the synchronous belt wheel 2, the target component 5 is fixedly arranged on the synchronous toothed belt 4, a worm structure is arranged below the fine adjustment knob 14 and is meshed with the worm wheel 13, the worm wheel 13 and the transmission shaft 1 are rotated by rotating the fine adjustment knob 14, and therefore the target component 5 moves, and the function of linear fine adjustment is achieved.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. A damping-adjustable linear fine adjustment mechanism is characterized by comprising a transmission shaft (1), wherein a synchronous pulley (2) is installed on the outer side of the transmission shaft (1), the synchronous pulley (2) is fixed with the transmission shaft (1) through a screw (3), an external tooth surface of the synchronous pulley (2) is meshed and connected with a synchronous toothed belt (4), a target component (5) is fixedly installed on the synchronous toothed belt (4), a spring seat (7) and a friction ring (10) are installed on the lower portion of the transmission shaft (1), and a spring (9) is arranged between the spring seat (7) and the friction ring (10); a worm gear sleeve (11) is installed on a shaft neck at the lower part of the transmission shaft (1), the worm gear sleeve (11) is located below the friction ring (10), a worm gear (13) is installed on the periphery of the worm gear sleeve (11) in a matched mode, and a fine adjustment knob (14) used for driving the worm gear (13) to rotate is installed on the side face of the worm gear (13).
2. The adjustable-damping linear fine adjustment mechanism according to claim 1, wherein a shaft neck of the transmission shaft (1) is provided with an external thread, a locking nut (6) is threadedly mounted at the external thread of the transmission shaft (1), the spring seat (7) is mounted below the locking nut (6), and the locking nut (6) is used for adjusting the height position of the spring seat (7) on the transmission shaft (1).
3. The adjustable-damping linear fine adjustment mechanism is characterized in that a connecting key groove is formed in a journal below an external thread of the transmission shaft (1), a connecting key (8) is installed in the connecting key groove, and the connecting key (8) is installed in a matching mode with the spring seat (7) and the friction ring (10).
4. An adjustable-damping linear fine adjustment mechanism according to claim 1, characterized in that an upper bearing seat (15) is mounted at the upper journal of the transmission shaft (1), and a lower bearing seat (16) is mounted at the lower journal of the transmission shaft (1).
5. The adjustable-damping linear fine adjustment mechanism is characterized in that a flat key groove is formed in the lower journal of the transmission shaft (1), a flat key (12) is installed in the flat key groove, and an inner hole of the worm gear sleeve (11) is matched with the lower journal of the transmission shaft (1) and the flat key (12).
6. An adjustable-damping linear fine adjustment mechanism according to claim 1, characterized in that the worm wheel (13) and the worm wheel sleeve (11) rotate relatively, the worm wheel (13) contacts with the lower end face of the friction ring (10), and the worm wheel (13) and the friction ring (10) rotate relatively.
7. The adjustable-damping linear fine adjustment mechanism is characterized in that a worm structure is arranged below the fine adjustment knob (14), the worm structure below the fine adjustment knob (14) is meshed with the worm wheel (13), and the fine adjustment knob (14) is rotated to control the worm wheel (13) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031660.0A CN114321304B (en) | 2022-01-12 | 2022-01-12 | Linear fine adjustment mechanism with adjustable damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031660.0A CN114321304B (en) | 2022-01-12 | 2022-01-12 | Linear fine adjustment mechanism with adjustable damping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114321304A true CN114321304A (en) | 2022-04-12 |
| CN114321304B CN114321304B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210031660.0A Active CN114321304B (en) | 2022-01-12 | 2022-01-12 | Linear fine adjustment mechanism with adjustable damping |
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| Country | Link |
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| CN (1) | CN114321304B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064622A (en) * | 2009-09-18 | 2011-03-31 | Nikon-Trimble Co Ltd | Surveying instrument |
| CN202579879U (en) * | 2012-05-08 | 2012-12-05 | 台州市三凯机电有限公司 | Input wheel of worm-gear speed reducer with friction function |
| CN103267100A (en) * | 2013-05-27 | 2013-08-28 | 成都福誉科技有限公司 | Precise self-locking and lifting adjustment device |
| CN109281991A (en) * | 2018-11-19 | 2019-01-29 | 常州机电职业技术学院 | linear micro-motion mechanism |
| CN210464901U (en) * | 2019-10-08 | 2020-05-05 | 常州煜乔机械有限公司 | Precise telescopic circumferential synchronous fine adjustment mechanism |
| CN111870263A (en) * | 2020-06-12 | 2020-11-03 | 南京国科医工科技发展有限公司 | Friction transmission device for scanning frame of CT imaging system |
-
2022
- 2022-01-12 CN CN202210031660.0A patent/CN114321304B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064622A (en) * | 2009-09-18 | 2011-03-31 | Nikon-Trimble Co Ltd | Surveying instrument |
| CN202579879U (en) * | 2012-05-08 | 2012-12-05 | 台州市三凯机电有限公司 | Input wheel of worm-gear speed reducer with friction function |
| CN103267100A (en) * | 2013-05-27 | 2013-08-28 | 成都福誉科技有限公司 | Precise self-locking and lifting adjustment device |
| CN109281991A (en) * | 2018-11-19 | 2019-01-29 | 常州机电职业技术学院 | linear micro-motion mechanism |
| CN210464901U (en) * | 2019-10-08 | 2020-05-05 | 常州煜乔机械有限公司 | Precise telescopic circumferential synchronous fine adjustment mechanism |
| CN111870263A (en) * | 2020-06-12 | 2020-11-03 | 南京国科医工科技发展有限公司 | Friction transmission device for scanning frame of CT imaging system |
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| Publication number | Publication date |
|---|---|
| CN114321304B (en) | 2023-11-14 |
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