CN103115056B - Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode - Google Patents
Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode Download PDFInfo
- Publication number
- CN103115056B CN103115056B CN201310078007.0A CN201310078007A CN103115056B CN 103115056 B CN103115056 B CN 103115056B CN 201310078007 A CN201310078007 A CN 201310078007A CN 103115056 B CN103115056 B CN 103115056B
- Authority
- CN
- China
- Prior art keywords
- nut
- free beam
- basal body
- beam state
- piezoelectricity
- 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
Links
Landscapes
- Transmission Devices (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention provides a sandwich type nut which can be unlocked for changing an operating mode of a free beam longitudinal-torsional mode, belongs to the field of fastening pieces and transmission pieces which are connected through screw thread pairs, and aims to achieve switch and control between working conditions of self-locking and unlocking of the screw thread pairs conveniently, quickly and flexibly. Each piezoelectric extension ring is composed of a plurality of piezoelectric extension sheets, the extension direction of the piezoelectric extension sheets is the same with the thickness direction of the piezoelectric extension sheets, and one piezoelectric extension ring is embedded in each annular groove. A plurality of deep grooves or a plurality of small hole rows are further arranged in the excircle face of a nut base body in a free beam state, all the piezoelectric extension sheets are capable of driving alone or in groups, and the driving phases are the same when the piezoelectric extension sheets drive in groups. By means of the sandwich type nut which can be unlocked for changing the operating mode of the free beam longitudinal-torsional mode, when piezoelectric extension sheets input driving signals, a self-locking working state of the nut base body is enabled to be changed to an unlocking working state, the friction coefficient between the screw thread pairs is greatly reduced, and the self-locking working state between the nut base body and a threaded rod is enabled to disappear.
Description
Technical field
The invention belongs to the fastening piece and driving component field that utilize screw pair to connect.
Background technique
Very extensive based on applying in the fastening piece of screw pair form and the equipment of driving component in current every profession and trade, system, device and mechanism.For screw pair auxiliary connection, main exist two kinds of working staties, and be respectively screw thread self-locking state and non-self-lock-ing state, wherein the latter also can be described as released state.For the self-locking working state of screw pair, the screw pair adopted generally should meet screw thread self-locking condition, namely lead angle is less than the equivalent friction angle between screw pair, and main application is fastening, the aspect such as drive rail of sliding and the jack carrying out power transmission of component; For the unblock working state of screw pair, namely meet lead angle and be greater than equivalent friction angle between screw pair, mainly utilize the motion screwing delivery system between nut and screw rod and Power output, be embodied in following three aspects, one is the conversion realized between rotary motion and straight line motion, two be for component each in adjust system between mutual alignment, three is obtain larger thrust output etc. with less input torque.At present, for self-locking between screw pair and the switch and control unlocking two kinds of working staties, often need to adopt the self-locking nut with auto-lock function and corresponding release mechanism joint work to realize simultaneously, there is the problems such as complex structure, complex operation, fabricating cost height in this kind of mechanism by adding self-locking and released state conversion function that unlocking structure mode realizes screw pair, limits the application of screw pair fastening piece and driving component.
Summary of the invention
Realize self-locking between screw pair and the switch and control unlocking two kinds of working staties conveniently, fast, neatly, what the present invention proposes a kind of sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation can Unlockable nut.
Described sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation can Unlockable nut, be made up of the basal body of nut of free beam state, the multiple piezoelectricity annulus that stretches;
The basal body of nut of free beam state is free beam the way of restraint, is provided with a flange plate in the middle part of the basal body of nut of free beam state, the plane of flange plate is processed with several for installing fixing positioning hole; The inner headed face of the basal body of nut of free beam state is provided with internal thread, be rotatably connected in the internal thread of the basal body of nut of free beam state screw rod, the periphery of the basal body of nut of free beam state circumferentially has multiple annular groove, and be distributed in the both sides of flange plate, and the number of flange plate both sides annular groove is equal; On the periphery of the basal body of nut of free beam state, circumferentially direction is also provided with many deep trouths or multiple row aperture; Wherein many deep trouths of half quantity or multiple row aperture are arranged between its right end face of the basal body of nut of annular groove on the right side of flange plate and free beam state; Wherein many deep trouths of second half quantity or multiple row aperture are arranged between the left end face of the basal body of nut of annular groove on the left of flange plate and free beam state; Described many deep trouths or multiple row aperture are all arranged along the periphery helix of the basal body of nut of free beam state, the direction of its helix or left and right inversion symmetry symmetrical relative to left and right centered by flange plate; The piezoelectricity annulus that stretches is made up of multi-disc piezoelectricity stretchable sheet; All piezoelectricity stretchable sheets are annulus pad shape, and the telescopic direction of piezoelectricity stretchable sheet is identical with the thickness direction of piezoelectricity stretchable sheet, and multi-disc piezoelectricity stretchable sheet superposes connection successively; It is characterized in that the lead angle of the internal thread of the basal body of nut of free beam state is less than the equivalent friction angle between internal thread and screw rod connecting thread pair; Be inlaid with a piezoelectricity in each annular groove of the basal body of nut of free beam state to stretch annulus, the stretch both sides end face of annulus of piezoelectricity is connected with the both sides end face in annular groove respectively; All piezoelectricity stretchable sheets drive in groups, and when driving in groups, it drives phase place identical; The resonant frequency of the driver frequency of piezoelectricity stretchable sheet and the basal body of nut of free beam state matches or close, excites the basal body of nut of free beam state to be in ultrasonic vibration state with this; The driving electric signal waveform of piezoelectricity stretchable sheet is sinusoidal waveform ac signal, square waveform ac signal or triangular waveform ac signal.
The present invention can when piezoelectricity stretchable sheet input drive signal, and make the self-locking working state of basal body of nut change into unblock working state, the friction factor namely between screw pair significantly reduces, and the self-locking working state between basal body of nut and screw rod is disappeared.The present invention also has that structure is simple, fabricating cost is low, the advantage of applied range, can be used for the aspects such as the break-make in machine driven system, location and speeds control, extends the application of screw pair fastening piece and driving component.
Accompanying drawing explanation
Fig. 1 is the structural representation after the screw rod 1-5 that can be rotatably connected in Unlockable nut of sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation of the present invention;
Fig. 2 be in Fig. 1 piezoelectricity stretch annulus 2 launch decompose after structural representation;
Fig. 3 is piezoelectricity stretchable sheet 2-1 structural representation in Fig. 2;
Fig. 4 be the basal body of nut 1 of free beam state in Fig. 1 periphery on be provided with the structural representation after many deep trouths 3;
Fig. 5 be the basal body of nut 1 of free beam state in Fig. 1 periphery on be provided with the structural representation after multiple row aperture 4.
Embodiment
Embodiment one: be described see Fig. 1, Fig. 2, Fig. 3, this embodiment is made up of the basal body of nut 1 of free beam state, the multiple piezoelectricity annulus 2 that stretches;
The basal body of nut 1 of free beam state is free beam the way of restraint, is provided with a flange plate 1-4 in the middle part of the basal body of nut 1 of free beam state, the plane of flange plate 1-4 is processed with several for installing fixing positioning hole 1-3; The inner headed face of the basal body of nut 1 of free beam state is provided with internal thread 1-2, the lead angle of screw rod 1-5, internal thread 1-2 of being rotatably connected in the internal thread 1-2 of the basal body of nut 1 of free beam state is less than the equivalent friction angle between internal thread 1-2 and screw rod 1-5 connecting thread pair; The periphery of the basal body of nut 1 of free beam state circumferentially has multiple annular groove 1-1, and is distributed in the both sides of flange plate 1-4, and the number of flange plate 1-4 both sides annular groove 1-1 is equal; On the periphery of the basal body of nut 1 of free beam state, circumferentially direction is also provided with many deep trouths 3 or multiple row aperture 4; Wherein many deep trouths 3 of half quantity or multiple row aperture 4 are arranged between its right end face of the basal body of nut 1 of annular groove 1-1 on the right side of flange plate 1-4 and free beam state; Wherein many deep trouths 3 of second half quantity or multiple row aperture 4 are arranged between the left end face of the basal body of nut 1 of annular groove 1-1 on the left of flange plate 1-4 and free beam state; Described many deep trouths 3 or multiple row aperture 4 are all arranged along the periphery helix of the basal body of nut 1 of free beam state, the direction of its helix or left and right inversion symmetry symmetrical relative to left and right centered by flange plate 1-4; The piezoelectricity annulus 2 that stretches is made up of multi-disc piezoelectricity stretchable sheet 2-1; All piezoelectricity stretchable sheet 2-1 are annulus pad shape, and the telescopic direction of piezoelectricity stretchable sheet 2-1 is identical with the thickness direction of piezoelectricity stretchable sheet 2-1, and multi-disc piezoelectricity stretchable sheet 2-1 superposes connection successively; Be inlaid with a piezoelectricity in each annular groove 1-1 to stretch annulus 2, the stretch both sides end face of annulus 2 of piezoelectricity is connected with the both sides end face in annular groove 1-1 respectively; All piezoelectricity stretchable sheet 2-1 can drive separately or in groups, and when driving in groups, it drives phase place identical.
Embodiment two: be described see Fig. 1, Fig. 2, Fig. 3, the difference of present embodiment and embodiment one is that the resonant frequency of the described driver frequency of piezoelectricity stretchable sheet 2-1 and the basal body of nut 1 of free beam state matches or close, excites the basal body of nut 1 of free beam state to be in ultrasonic vibration state with this; The driving electric signal waveform of piezoelectricity stretchable sheet 2-1 can be sinusoidal waveform ac signal, square waveform ac signal, triangular waveform ac signal or zigzag fashion ac signal.Other composition is identical with embodiment one with annexation.
Embodiment three: be described see Fig. 1, Fig. 2, Fig. 3, the difference of present embodiment and embodiment one is that the internal thread 1-2 of the basal body of nut 1 of described free beam state and the outside thread of screw rod 1-5 can be trapezoidal thread, V thread screw, square threaded form, buttress thread form, pipe thread or nonstandard screw thread.Other composition is identical with embodiment one with annexation.
Working principle: Unlockable nut mainly can encouraging Unlockable nut can be in the micro breadth oscillation state of high frequency (frequency is generally greater than 1000Hz) by piezoelectricity stretchable sheet 2-1 of sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation, the antifriction effect that utilizes dither to produce reduces can friction factor between Unlockable nut and screw rod, destroy the condition of self-locking between screw pair, make Unlockable nut to be in unblock working state.The ultrasonic antifriction effect caused by the micro breadth oscillation of (frequency is generally greater than 13kHz) in ultrasonic frequency is the one in the antifriction effect of dither, mainly refer to when two kinematic pair are in Frotteurism, make wherein one or two contact surface be in ultrasonic vibration state by the applying of ultrasonic vibration and cause the phenomenon that between surface of contact, friction factor reduces, at present this phenomenon confirm by a large amount of experimental researcies, this principle of antifriction effect that the present invention mainly utilizes dither to produce carries out work.
Sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation can Unlockable nut mainly utilize piezoelectricity stretchable sheet 2-1 to excite the basal body of nut 1 of free beam state to be produced as extensional vibration in axial direction, to be coupled the torsional deflection produced around axial direction by many deep trouths 3 that arrange in the basal body of nut 1 of free beam state or multiple row aperture 4.Described piezoelectricity stretchable sheet 2-1 replaceable one-tenth magnetostriction sheet, photo-induced telescopic sheet or thermic stretchable sheet.
Claims (2)
1. sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation can Unlockable nut, it is characterized in that it is made up of the basal body of nut (1) of free beam state, the multiple piezoelectricity annulus (2) that stretches;
The basal body of nut (1) of free beam state is free beam the way of restraint, basal body of nut (1) middle part of free beam state is provided with a flange plate (1-4), the plane of flange plate (1-4) is processed with several for installing fixing positioning hole (1-3); The inner headed face of the basal body of nut (1) of free beam state is provided with internal thread (1-2), be rotatably connected in the internal thread (1-2) of the basal body of nut (1) of free beam state screw rod (1-5), the periphery of the basal body of nut (1) of free beam state circumferentially has multiple annular groove (1-1), and be distributed in the both sides of flange plate (1-4), and the number of flange plate (1-4) both sides annular groove (1-1) is equal; On the periphery of the basal body of nut (1) of free beam state, circumferentially direction is also provided with many deep trouths (3) or multiple row aperture (4); Wherein many deep trouths (3) of half quantity or multiple row aperture (4) are arranged between its right end face of the annular groove (1-1) on flange plate (1-4) right side and the basal body of nut (1) of free beam state; Wherein many deep trouths (3) of second half quantity or multiple row aperture (4) are arranged between the left end face of the annular groove (1-1) in flange plate (1-4) left side and the basal body of nut (1) of free beam state; Described many deep trouths (3) or multiple row aperture (4) are all arranged along the periphery helix of the basal body of nut (1) of free beam state, the direction of its helix or left and right inversion symmetry symmetrical relative to left and right centered by flange plate (1-4); The piezoelectricity annulus (2) that stretches is made up of multi-disc piezoelectricity stretchable sheet (2-1); All piezoelectricity stretchable sheets (2-1) are annulus pad shape, and the telescopic direction of piezoelectricity stretchable sheet (2-1) is identical with the thickness direction of piezoelectricity stretchable sheet (2-1), and multi-disc piezoelectricity stretchable sheet (2-1) superposes connection successively; It is characterized in that the lead angle of the internal thread (1-2) of the basal body of nut (1) of free beam state is less than the equivalent friction angle between internal thread (1-2) and screw rod (1-5) connecting thread pair; Be inlaid with a piezoelectricity in each annular groove (1-1) of the basal body of nut (1) of free beam state to stretch annulus (2), the stretch both sides end face of annulus (2) of piezoelectricity is connected with the both sides end face in annular groove (1-1) respectively; All piezoelectricity stretchable sheets (2-1) drive in groups, and when driving in groups, it drives phase place identical; The resonant frequency of the driver frequency of piezoelectricity stretchable sheet (2-1) and the basal body of nut (1) of free beam state matches or close, excites the basal body of nut of free beam state (1) to be in ultrasonic vibration state with this; The driving electric signal waveform of piezoelectricity stretchable sheet (2-1) is sinusoidal waveform ac signal, square waveform ac signal or triangular waveform ac signal.
2. sandwich type free beam longitrorse MODAL TRANSFORMATION OF A mode of operation according to claim 1 can Unlockable nut, it is characterized in that the internal thread (1-2) of the basal body of nut (1) of described free beam state and the outside thread of screw rod (1-5) can be trapezoidal thread, V thread screw, square threaded form, buttress thread form, pipe thread or nonstandard screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078007.0A CN103115056B (en) | 2013-03-12 | 2013-03-12 | Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078007.0A CN103115056B (en) | 2013-03-12 | 2013-03-12 | Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103115056A CN103115056A (en) | 2013-05-22 |
| CN103115056B true CN103115056B (en) | 2015-03-18 |
Family
ID=48413474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310078007.0A Expired - Fee Related CN103115056B (en) | 2013-03-12 | 2013-03-12 | Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103115056B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207519A (en) * | 2015-01-06 | 2015-12-30 | 程廷海 | High-power precision piezoelectric ultrasonic driving platform and driving method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075845Y (en) * | 2007-09-05 | 2008-06-18 | 清华大学 | Screwed cap type ultrasound electric machine |
| CN101227157A (en) * | 2007-12-28 | 2008-07-23 | 清华大学 | Piezoelectricity thread driver adopting Langevin-type transducer structure |
| CN201398156Y (en) * | 2009-03-20 | 2010-02-03 | 清华大学 | Screw-thread linear ultrasonic motor driven by piezoelectric composite bending beam and having clamped end or middle part |
| CN102185519A (en) * | 2011-05-11 | 2011-09-14 | 南京航空航天大学 | Mode conversion type piezoelectric thread transmission linear ultrasonic motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04355680A (en) * | 1991-06-03 | 1992-12-09 | Nasuka:Kk | Ultrasonic motor applied machine |
| KR100704990B1 (en) * | 2005-08-08 | 2007-04-10 | 삼성전기주식회사 | A stator and ceramic tube type ultrasonic motor using the same |
-
2013
- 2013-03-12 CN CN201310078007.0A patent/CN103115056B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075845Y (en) * | 2007-09-05 | 2008-06-18 | 清华大学 | Screwed cap type ultrasound electric machine |
| CN101227157A (en) * | 2007-12-28 | 2008-07-23 | 清华大学 | Piezoelectricity thread driver adopting Langevin-type transducer structure |
| CN201398156Y (en) * | 2009-03-20 | 2010-02-03 | 清华大学 | Screw-thread linear ultrasonic motor driven by piezoelectric composite bending beam and having clamped end or middle part |
| CN102185519A (en) * | 2011-05-11 | 2011-09-14 | 南京航空航天大学 | Mode conversion type piezoelectric thread transmission linear ultrasonic motor |
Non-Patent Citations (3)
| Title |
|---|
| 斜槽式纵扭模态转换型超声电机在不同摩擦副下的负载特性研究;杨淋 等;《中国机电工程学报》;20100525;第30卷(第15期);第94-98页 * |
| 瓦伦丁 L.波波夫.超声振动影响下的摩擦行为.《接触力学与摩擦学的原理及其应用》.清华大学出版社,2011,第220-230页. * |
| 超声振动减摩现象的研究;程光明 等;《压电与声光》;19981031;第20卷(第5期);第322-325页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103115056A (en) | 2013-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103148079B (en) | Unlockable nut in sandwich cantilever longitrorse mode conversion working mode | |
| CN103115055B (en) | Paster type ultrasonic nut with self-locking and unlocking functions | |
| CN103115057B (en) | Sandwich type ultrasonic wave nut with functions of self-locking and unlocking | |
| CN103115121B (en) | There is the sandwich type ultrasonic wave lead screw of low frictional behavior | |
| CN103133488B (en) | Sandwich type free beam torsional vibration operating mode unlockable nut | |
| CN103115058B (en) | Paster type unlockable nut of longitudinal vibration working mode of cantilever beam | |
| CN103148080B (en) | Unlockable nut in sandwich cantilever longitudinal vibration working mode | |
| CN103115122B (en) | There is the surface mount type ultrasonic wave lead screw of low frictional behavior | |
| CN103174724B (en) | Releasable nut in sandwich type cantilever beam bending vibration working pattern | |
| CN103115056B (en) | Sandwich type nut which can be unlocked for changing operating mode of free beam longitudinal-torsional mode | |
| CN103148078B (en) | Unlockable nut in paster-type free beam longitudinal torsion state switching working mode | |
| CN103148081B (en) | Unlockable nut in paster-type cantilever beam composite bending-vibration working mode | |
| CN103133492B (en) | Unlockable nut of patch type cantilever beam torsional vibration operating mode | |
| CN103133494B (en) | Unlockable nut of patch type free beam torsional vibration operating mode | |
| CN103174725B (en) | Nut allowing unlocking in sandwich type free beam bending vibration working pattern | |
| CN103133495B (en) | Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked | |
| CN103133489B (en) | Sandwich type cantilever beam torsional vibration operating mode unlockable nut | |
| CN103133487B (en) | Unlockable nut for switching operating modes of patch type cantilever beam lengthways torsion mode | |
| CN204392112U (en) | A kind of large stroke and high precision micro-nano drive unit | |
| CN103148082B (en) | Unlockable nut in paster-type free beam composite bending-vibration working mode | |
| CN103133490B (en) | Sandwich type free beam longitudinal vibration operating mode unlockable nut | |
| CN103115059B (en) | Paster type unlockable nut of bending vibration working mode of free beam | |
| CN103133493B (en) | Sandwich type free beam composite bending vibration operating mode unlockable nut | |
| CN103133491B (en) | Sandwich type cantilever beam composite bending vibration operating mode unlockable nut | |
| CN103161811B (en) | Unlockable nut of bending vibration work pattern of surface mount type cantilever beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20200312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |