CN205559716U - Harmonic lead screw sealing transmission device - Google Patents
Harmonic lead screw sealing transmission device Download PDFInfo
- Publication number
- CN205559716U CN205559716U CN201620140120.6U CN201620140120U CN205559716U CN 205559716 U CN205559716 U CN 205559716U CN 201620140120 U CN201620140120 U CN 201620140120U CN 205559716 U CN205559716 U CN 205559716U
- Authority
- CN
- China
- Prior art keywords
- leading screw
- wave generator
- flexible sleeve
- lead screw
- flexible cylinder
- 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.)
- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title abstract description 17
- 238000007789 sealing Methods 0.000 title abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a harmonic lead screw sealing transmission device, which comprises a lead screw (4), wherein the lead screw (4) is arranged inside a deformation generation driver (1) through thread fit; the deformation generation driver (1) comprises a completely sealed flexible cylinder (13) and an outer wave generator (11) sleeved on the flexible cylinder (13), a cylindrical roller (12) is arranged between the flexible cylinder (13) and the outer wave generator (11), and an annular groove (5) is formed in the part, matched with the outer wave generator (11), of the inner wall of the flexible cylinder (13); the annular groove (5) is meshed with the screw rod (4), and the screw rod (4) is arranged inside the flexible cylinder (13). The utility model discloses can convert rotary motion into the linear motion of lead screw under inclosed condition, have the structure and compact beneficial effect such as transmission precision height.
Description
Technical field
The utility model relates to a kind of transmission device, particularly relates to a kind of harmonic wave leading screw sealed gearing device.
Background technology
Technology of Harmonic Wave Transmission is a kind of Novel transmission technology produced with the development of space technology in later stage the 1950's, and it is to utilize controlled fluctuation deformation produced by flexible member to realize the transmission of motion and power.Relatively conventional transmission mechanism has that kinematic accuracy is high, return difference is little, volume is little, bearing capacity is high, transmission accuracy and the high many unique advantages of transmission efficiency, has been successfully applied in the fields such as space technology, instrument and meter, robot, printing machinery and medicine equipment.But there is the problems such as axial dimension is big, volume is big, quality is big in harmonic gear reducer, suitable for application in vacuum or the occasion that has pollution.
Chinese patent literature (CN203130930U) discloses the Pneumatic wave generator of a kind of harmonic gear transmission device, including chassis, in being installed in chassis along Pneumatic wave generator long axis direction and its two ends are stretched out the auto-telescopic mechanism of chassis edge and are installed in the two ends of this auto-telescopic mechanism and are respectively used to the roller that the inner circle with flexbile gear abuts against, described auto-telescopic mechanism all may extend or retract in described chassis along its two ends of Pneumatic wave generator long axis direction, the roller at its two ends abuts with described flexbile gear inner circle elasticity to force flexbile gear to be become oval from circle and make the flexbile gear gear teeth tightly engage with the just wheel gear teeth of harmonic gear transmission device under the effect of auto-telescopic mechanism.Above-mentioned harmonic gear transmission device is not suitable for using in confined conditions, there is the defect that inner space is excessive.
Utility model content
The purpose of this utility model is to provide a kind of sealed gearing device that gyration can be converted under vacuum or pollution occasion linear motion.
The technical scheme realizing above-mentioned purpose is: a kind of harmonic wave leading screw sealed gearing device, including leading screw, leading screw is contained in deformation generation internal drive by threaded engagement；Deformation generation driver includes the flexible sleeve fully sealed and the external wave generator being sleeved in flexible sleeve, and equipped with cylindrical roller between flexible sleeve and external wave generator, the position that the inwall of flexible sleeve matches with external wave generator has cannelure；Cannelure engages with leading screw, and leading screw is contained in inside flexible sleeve.
The endoporus of external wave generator is oval, and the difference of the oval minor axis diameter of external wave generator and 2 times of roller diameters is less than the outer diameter of flexible sleeve.
The lead angle of cannelure is zero degree, the multiple that head number is 2 of leading screw.
The utility model has the advantages that
(1) under conditions of airtight, gyration can be converted into the linear motion of leading screw；
(2) owing to have employed the flexible sleeve of sealing, inner space is conserved, and structure is compacter, can transmit motion under vacuum or the occasion having pollution；
(3) it is oval due to the endoporus of external wave generator, the difference of the oval minor axis diameter of external wave generator and 2 times of roller diameters is slightly less than the outer diameter of flexible sleeve, reducing the alternate stress of flexible sleeve, be improved service life, transmission accuracy is improved；
(4) be zero degree due to the lead angle of cannelure, screw-driven pair will not deadlock, improve transmission efficiency, reduce processing cost.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model；
Fig. 2 is left view of the present utility model；
In figure: 1. deformation generation driver；11. external wave generators；12. cylindrical rollers；13. flexible sleeve；4. leading screw；5. cannelure.
Detailed description of the invention
With embodiment, the utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1～2: a kind of harmonic wave leading screw sealed gearing device, including leading screw 4, it is internal that leading screw 4 is contained in deformation generation driver 1 by threaded engagement；For saving inner space of the present utility model, deformation generation driver 1 includes the flexible sleeve 13 fully sealed and the external wave generator 11 being sleeved in flexible sleeve 13, equipped with cylindrical roller 12 between flexible sleeve 13 and external wave generator 11, the position that the inwall of flexible sleeve 13 matches with external wave generator 11 has cannelure 5；Cannelure 5 engages with leading screw 4, and it is internal that leading screw 4 is contained in flexible sleeve 13.
Further, reducing the alternate stress of flexible sleeve 13, improve life-span and transmission accuracy, the endoporus of external wave generator 11 is oval, and the difference of the oval minor axis diameter of external wave generator 11 and 2 times of roller 12 diameters is less than the outer diameter of flexible sleeve 13.
Further, for improving transmission efficiency, the lead angle of cannelure 5 is zero degree, the multiple that head number is 2 of leading screw 4.
Operation principle of the present utility model: cannelure 5 engages with leading screw 4, leading screw 4 is contained in hermetic flexible cylinder 13, when rotating external wave generator 11, the short axle position of the oval endoporus of external wave generator 11 forces flexible sleeve 13 to deform, and periodically change with the revolution of external wave generator 11, at this moment the cannelure 5 on flexible sleeve 13 inwall is also changing with the site of engagement of leading screw 4, also periodically change is formed with the revolution of external wave generator 11, owing to leading screw 4 can not rotate, cannelure 5 just forces leading screw 4 to move axially, its moving direction changes with the change that turns to of external wave generator 11.
Claims (3)
1. a harmonic wave leading screw sealed gearing device, including leading screw (4), it is characterised in that: it is internal that leading screw (4) is contained in deformation generation driver (1) by threaded engagement；Deformation generation driver (1) includes the flexible sleeve (13) fully sealed and the external wave generator (11) being sleeved in flexible sleeve (13), equipped with cylindrical roller (12) between flexible sleeve (13) and external wave generator (11), the position that the inwall of flexible sleeve (13) matches with external wave generator (11) has cannelure (5)；Cannelure (5) engages with leading screw (4), and it is internal that leading screw (4) is contained in flexible sleeve (13).
A kind of harmonic wave leading screw sealed gearing device the most according to claim 1, it is characterized in that: the endoporus of external wave generator (11) is less than the outer diameter of flexible sleeve (13) for ellipse, the oval minor axis diameter of external wave generator (11) and the difference of 2 times of roller (12) diameters.
A kind of harmonic wave leading screw sealed gearing device the most according to claim 2, it is characterised in that: the lead angle of cannelure (5) is zero degree, the multiple that head number is 2 of leading screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140120.6U CN205559716U (en) | 2016-02-24 | 2016-02-24 | Harmonic lead screw sealing transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140120.6U CN205559716U (en) | 2016-02-24 | 2016-02-24 | Harmonic lead screw sealing transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559716U true CN205559716U (en) | 2016-09-07 |
Family
ID=56818507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620140120.6U Expired - Fee Related CN205559716U (en) | 2016-02-24 | 2016-02-24 | Harmonic lead screw sealing transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626808A (en) * | 2016-02-24 | 2016-06-01 | 常州机电职业技术学院 | Harmonic lead screw sealing transmission device |
-
2016
- 2016-02-24 CN CN201620140120.6U patent/CN205559716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626808A (en) * | 2016-02-24 | 2016-06-01 | 常州机电职业技术学院 | Harmonic lead screw sealing transmission device |
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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: 20160907 Termination date: 20210224 |