CN114321304B - Linear fine adjustment mechanism with adjustable damping - Google Patents
Linear fine adjustment mechanism with adjustable damping Download PDFInfo
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- CN114321304B CN114321304B CN202210031660.0A CN202210031660A CN114321304B CN 114321304 B CN114321304 B CN 114321304B CN 202210031660 A CN202210031660 A CN 202210031660A CN 114321304 B CN114321304 B CN 114321304B
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- transmission shaft
- worm wheel
- fine adjustment
- friction ring
- damping
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000013016 damping Methods 0.000 title claims description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 230000001360 synchronised effect Effects 0.000 claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression 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 damping-adjustable linear fine adjustment mechanism, which comprises a transmission shaft, wherein a synchronous pulley is arranged on the outer side of the transmission shaft, the synchronous pulley is fixed with the transmission shaft through a screw, an outer tooth surface of the synchronous pulley is connected with a synchronous toothed belt in a meshed manner, a target part is fixedly arranged on the synchronous toothed belt, a spring seat and a friction ring are arranged on 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 and gear mechanism to directly drive a synchronous pulley and a synchronous toothed belt through the friction ring, and the synchronous toothed belt drives a target part to do linear movement, thereby realizing fine adjustment of the position of the target part which moves linearly, and having small transmission side clearance and high adjustment precision.
Description
Technical Field
The invention relates to the technical field of linear fine tuning mechanisms, in particular to a damping-adjustable linear fine tuning mechanism.
Background
The linear fine adjustment mechanism generally consists of a fine adjustment knob, a speed reducing mechanism and a driving module. The driving module is connected with the target component, and can convert the angular displacement into linear displacement through rotating the fine adjustment knob, decelerating through the decelerating mechanism and converting the angular displacement into the linear displacement by 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 target component moving linearly by rotating a fine adjustment knob, but when the fine adjustment knob is static and directly drives the target component to move linearly, the damping force acted by the linear fine adjustment mechanism when the target component moves cannot be continuously adjusted.
Disclosure of Invention
The invention aims to provide a damping-adjustable linear fine adjustment mechanism, which adopts a worm and 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 linearly move, so that the position of the target part which linearly moves is finely adjusted, the transmission side clearance is small, and the adjustment precision is high.
The aim of the invention can be achieved by the following technical scheme:
the damping-adjustable linear fine adjustment mechanism comprises a transmission shaft, wherein a synchronous pulley is arranged on the outer side of the transmission shaft and fixed with the transmission shaft through a screw, an outer tooth surface of the synchronous pulley is connected with a synchronous toothed belt in a meshed mode, 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 the shaft neck at the lower part of the transmission shaft, the worm gear sleeve is positioned below the friction ring, a worm gear is arranged outside the worm gear sleeve Zhou Peige, and a fine tuning knob for driving the worm gear to rotate is arranged on the side surface of the worm gear.
As a further scheme of the invention: the shaft neck of the transmission shaft is provided with external threads, locking nuts are installed at the external threads of the transmission shaft in a threaded mode, the spring seats are installed below the locking nuts, and the locking nuts are used for adjusting the height positions of the spring seats on the transmission shaft.
As a further scheme of the invention: the shaft neck below the external threads of the transmission shaft is provided with a connecting key groove, a connecting key is arranged in the connecting key groove, and the connecting key is matched with the spring seat and the friction ring.
As a further scheme of the invention: an upper bearing seat is arranged at the upper shaft neck of the transmission shaft, and a lower bearing seat is arranged at the lower shaft neck 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 wheel sleeve is matched with the lower shaft neck of the transmission shaft and the flat key.
As a further scheme of the invention: the worm wheel and the worm wheel sleeve rotate relatively, the worm wheel contacts with the lower end surface 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 tuning knob, the worm structure below the fine tuning knob is meshed with the worm wheel, and the worm wheel is controlled to rotate by rotating the fine tuning knob.
The invention has the beneficial effects that:
(1) The worm and gear mechanism is adopted to directly drive the synchronous pulley and the synchronous toothed belt through the friction ring, the synchronous toothed belt drives the target part to do linear movement, fine adjustment of the position of the target part which moves linearly is realized, the transmission side gap is small, and the adjustment precision is high; when the target part is directly driven to linearly move, the fine adjustment knob can be kept static, and the damping force applied to the target part during movement can be continuously adjusted by adjusting the compression nut, namely, the damping is continuously adjustable.
(2) The synchronous pulley is installed and fixed on the transmission shaft, the inner tooth surface of the synchronous toothed belt is meshed with the outer tooth surface of the synchronous pulley, the target part is installed and fixed on the synchronous toothed belt, the worm structure is arranged below the fine tuning knob and meshed with the worm wheel, the worm wheel and the transmission shaft are rotated through rotating the fine tuning knob, and therefore the target part moves, and the function of linear fine tuning is achieved.
(3) The worm wheel contacts with the lower end face of the friction ring, the spring seat and the locking nut are sequentially arranged above the friction ring, the locking nut is matched with the external thread of the transmission shaft, the friction ring and the spring seat are matched with the shaft neck of the transmission shaft, the friction ring and the spring seat are prevented from rotating relative to the transmission shaft through the connecting key, the rotating locking nut can change the dynamic friction force generated when the contact surface between the friction ring and the worm wheel rotates relatively, and therefore the function of continuously adjusting the damping force is achieved.
Drawings
The invention is further described below 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 transmission shaft; 2. a synchronous pulley; 3. a screw; 4. a synchronous toothed belt; 5. a target component; 6. a lock nut; 7. a spring seat; 8. a connecting key; 9. a spring; 10. a friction ring; 11. a worm wheel sleeve; 12. a flat key; 13. a worm wheel; 14. a fine tuning knob; 15. an upper bearing seat; 16. and a lower bearing seat.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention is a damping adjustable linear fine adjustment mechanism, a synchronous pulley 2 is installed at 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 a synchronous toothed belt 4 is meshed with the outer tooth surface of the synchronous pulley 2, a target part 5 is installed and fixed on the synchronous toothed belt 4, the rotation of the transmission shaft 1 can drive the target part 5 to move, the movement of the target part 5 can drive the transmission shaft 1 to rotate, a lock nut 6 is installed on the external 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 the journal below the external thread of the transmission shaft 1, an inner hole of the spring seat 7 is matched with the journal below the external thread of the transmission shaft 1 and a connecting key 8, the spring seat 7 can move up and down along the journal below the external thread of the transmission shaft 1, the spring 9 contacts with the spring seat 7 and is arranged below the spring seat 7, the friction ring 10 contacts with the spring 9 and is arranged below the spring 9, the inner hole of the friction ring 10 is matched with the shaft neck and the connecting key 8 below the external thread of the transmission shaft 1, 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, the flat key 12 is arranged in the key groove of the shaft neck below the transmission shaft 1, the 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 matched on the shaft neck of the worm wheel sleeve 11, the worm wheel 13 can rotate relative to the worm wheel sleeve 11, the worm wheel 13 contacts with the lower end surface of the friction ring 10, the worm wheel 13 can rotate relative to the friction ring 10, the side surface of the worm wheel 13 is provided with the fine tuning knob 14, the worm structure below the fine tuning knob 14 is meshed with the worm wheel 13, rotating the fine tuning knob 14 turns the worm gear 13. The upper bearing pedestal 15 and the lower bearing pedestal 16 are respectively arranged on the uppermost journal and the lowermost journal of the transmission shaft 1, and the transmission shaft 1 can rotate relative to the upper bearing pedestal 15 and the lower bearing pedestal 16. When the driving target member 5 moves, the friction ring 10 rotates together with the driving shaft 1, and since the worm wheel 13 cannot rotate under the limit of the worm structure below the fine adjustment knob 14, the contact surface between the friction ring 10 and the worm wheel 13 will relatively rotate to generate a kinetic friction force, thereby generating a damping force for the movement of the target member 5.
The spring seat 7 can be moved 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, and the dynamic friction force generated when the contact surface between the friction ring 10 and the worm wheel 13 rotates relatively is changed, so that the function of continuously adjusting the damping force applied to the target part 5 during movement is realized. The friction force between the friction ring 10 and the worm wheel 13 can enable the worm wheel 13 to drive the friction ring 10 to rotate and not to rotate relatively through adjusting the lock nut 6, when the fine adjustment knob 14 is rotated, the worm wheel 13 rotates to drive the friction ring 10 to rotate to drive the transmission shaft 1 to rotate, so that the target part 5 moves, and as a certain reduction ratio is arranged between the worm structure below the fine adjustment knob 14 and the worm wheel 13, the pitch circle diameter of the synchronous pulley 2 is smaller than that of the worm wheel 13, and the movement generated by the target part 5 is fine due to the reduction of speed through rotating the fine adjustment knob 14, so that the function of linear fine adjustment is realized.
The synchronous pulley 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 pulley 2, the target part 5 is fixedly arranged on the synchronous toothed belt 4, the worm structure is arranged below the fine tuning 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 tuning knob 14, and therefore the target part 5 moves, and the function of linear fine tuning is achieved.
The worm wheel 13 contacts with the lower end face of the friction ring 10, the spring 9, the spring seat 7 and the lock nut 6 are sequentially arranged above the friction ring 10, the lock nut 6 is matched and arranged on the external thread of the transmission shaft 1, the friction ring 10 and the spring seat 7 are matched and arranged on the shaft neck of the transmission shaft 1, the friction ring 10 and the spring seat 7 are prevented from rotating relative to the transmission shaft 1 through the connecting key 8, the dynamic friction force generated when the contact surface between the friction ring 10 and the worm wheel 13 rotates relatively can be changed by rotating the lock nut 6, and therefore the function of continuously adjusting the damping force is achieved.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (7)
1. The damping-adjustable linear fine adjustment mechanism is characterized by comprising a transmission shaft (1), wherein a synchronous pulley (2) is arranged 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 connected with a synchronous toothed belt (4) in a meshed mode, a target part (5) is fixedly arranged on the synchronous toothed belt (4), a spring seat (7) and a friction ring (10) are arranged 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 wheel sleeve (11) is arranged on the shaft neck at the lower part of the transmission shaft (1), the worm wheel sleeve (11) is positioned below the friction ring (10), a worm wheel (13) is arranged outside the worm wheel sleeve (11) Zhou Peige, and a fine tuning knob (14) for driving the worm wheel (13) to rotate is arranged on the side surface of the worm wheel (13).
2. The damping-adjustable linear fine adjustment mechanism according to claim 1, characterized in that an external thread is arranged on a shaft neck of the transmission shaft (1), a lock nut (6) is installed at the external thread of the transmission shaft (1) in a threaded manner, a spring seat (7) is installed below the lock nut (6), and the lock nut (6) is used for adjusting the height position of the spring seat (7) on the transmission shaft (1).
3. The damping-adjustable linear fine adjustment mechanism according to claim 1, characterized in that a connecting key groove is formed in a shaft neck below an external thread of the transmission shaft (1), a connecting key (8) is arranged in the connecting key groove, and the connecting key (8) is matched with the spring seat (7) and the friction ring (10).
4. A damping-adjustable linear fine adjustment mechanism according to claim 1, characterized in that an upper bearing seat (15) is mounted at the upper journal of the drive shaft (1), and a lower bearing seat (16) is mounted at the lower journal of the drive shaft (1).
5. The damping-adjustable linear fine adjustment mechanism according to claim 1, wherein a flat key groove is formed in the lower shaft neck of the transmission shaft (1), a flat key (12) is arranged in the flat key groove, and an inner hole of the worm wheel sleeve (11) is matched with the lower shaft neck of the transmission shaft (1) and the flat key (12).
6. The damping-adjustable 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 surface of the friction ring (10), and the worm wheel (13) and the friction ring (10) rotate relatively.
7. A damping adjustable linear fine adjustment mechanism according to claim 1, 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 rotation of the fine adjustment knob (14) controls 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 CN114321304A (en) | 2022-04-12 |
| CN114321304B true CN114321304B (en) | 2023-11-14 |
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Family Applications (1)
| 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 |
|---|---|
| CN114321304A (en) | 2022-04-12 |
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