CN103161811B - Unlockable nut of bending vibration work pattern of surface mount type cantilever beam - Google Patents
Unlockable nut of bending vibration work pattern of surface mount type cantilever beam Download PDFInfo
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- CN103161811B CN103161811B CN201310078047.5A CN201310078047A CN103161811B CN 103161811 B CN103161811 B CN 103161811B CN 201310078047 A CN201310078047 A CN 201310078047A CN 103161811 B CN103161811 B CN 103161811B
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- nut
- cantilever beam
- independent
- stretchable sheet
- basal body
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Abstract
The invention discloses an unlockable nut of a bending vibration work pattern of a surface mount type cantilever beam, belongs to the field of fasteners connected by using thread pairs and transmission pieces, and aims to achieve the transition and the control of two work patterns of self-locking and unlocking between thread pairs conveniently, fast and flexibly. A plurality of planes arranged opposite to each other in pairs are arranged around a peripheral direction on the external circular surface of a nut base body in a cantilever state, one sheet or multiple sheets of other-stimulating type telescopic sheets is/are arranged on each plane, and the telescopic directions of the other-stimulating type telescopic sheets are parallel to the axial line of the nut base body in the cantilever state. The other-stimulating frequencies of the other-stimulating type telescopic sheets are in an ultrasonic wave frequency range. The other-stimulating driving mode of the multiple other-stimulating type telescopic sheets is a traveling wave shock excitation work pattern or a standing wave shock excitation work pattern. The unlockable nut of the bending vibration work pattern of the surface mount type cantilever beam can enable the self-locking work pattern of the nut base body to change into the unlocking work pattern when other-stimulating driving signals are input the other-stimulating type telescopic sheets, namely, a friction coefficient between thread pairs is greatly reduced, and the self-locking work pattern between the nut base body and a screw rod is enabled to disappear.
Description
Technical field
The invention belongs to the securing member and driving member field that utilize screw thread pair to connect.
Background technology
Very extensive based on applying in the securing member of screw thread pair form and the equipment of driving member in current every profession and trade, system, device and mechanism.For screw thread pair auxiliary connection, main exist two kinds of operating states, 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 operating state of screw thread pair, the screw thread pair adopted generally should meet screw thread self-locking condition, namely lead angle is less than the equivalent friction angle between screw thread pair, and main application scenario is fastening, the aspect such as drive rail of sliding and the jack carrying out power transmission of parts; For the unblock operating state of screw thread pair, namely meet lead angle and be greater than equivalent friction angle between screw thread pair, mainly utilize the motion screwing transmission system between nut and screw rod and Power output, be embodied in following three aspects, one is the conversion realized between rotary motion and rectilinear motion, two be for parts each in adjustment System between mutual alignment, three is obtain larger thrust output etc. with less input torque.At present, for self-locking between screw thread pair and the switch and control unlocking two kinds of operating states, often need to adopt the self-locking nut with auto-lock function and corresponding release mechanism associated working to realize simultaneously, there is the problems such as complex structure, complex operation, cost of manufacture height in this kind of mechanism by adding self-locking and released state translation function that unlocking structure mode realizes screw thread pair, limits the application scenario of screw thread pair securing member and driving member.
Summary of the invention
Realize self-locking between screw thread pair and the switch and control unlocking two kinds of operating states conveniently, fast, neatly, what the present invention proposes a kind of SMD cantilever beam bending vibration mode of operation can Unlockable nut.
Described SMD cantilever beam bending vibration mode of operation can Unlockable nut, be made up of the basal body of nut of cantilever beam state, multi-disc independent-excited stretchable sheet;
The basal body of nut of cantilever beam state is cantilever beam the way of restraint, and the basal body of nut of cantilever beam state is T-shaped project organization, and its T-shaped larger diameter end adopts cantilever beam the way of restraint and is processed with several for installing fixing location hole; On the periphery of the basal body of nut of cantilever beam state, circumferentially direction is provided with multiple plane facing each other, total number of plane is≤4, each plane is provided with one or more pieces independent-excited stretchable sheets, and a plane of every sheet independent-excited stretchable sheet is all connected with plane, in each plane when being provided with multiple independent-excited stretchable sheet, all independent-excited stretchable sheets on this face all arrange along the axis direction of the basal body of nut of cantilever beam state; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet and the basal body of nut of cantilever beam state; Its sharp frequency of described independent-excited stretchable sheet is in supersonic band; Its sharp type of drive of multi-disc independent-excited stretchable sheet is row wave excitation mode of operation or standing wave exciting mode of operation; Described row wave excitation mode of operation is the driving phase difference 180 degree of the independent-excited stretchable sheet 2 in every two opposite planar, the driving phase difference 180 degree of the adjacent independent-excited stretchable sheet in each plane, independent-excited stretchable sheet in every two opposite planar drives successively so that circumference is adjacent, the driving phase difference of the independent-excited stretchable sheet on circumference adjacent plane 90 degree; Described independent-excited stretchable sheet is piezoelectricity stretchable sheet, and the driving electric signal waveform of piezoelectricity stretchable sheet can be sinusoidal waveform ac signal, square waveform ac signal, triangular waveform ac signal or zigzag ac signal; The inner headed face of the basal body of nut of cantilever beam state is provided with internal thread, and be rotatably connected in the internal thread of the basal body of nut of cantilever beam state screw rod, and the lead angle of internal thread is less than the equivalent friction angle between internal thread and screw rod connecting thread pair; Described standing wave exciting mode of operation is that each or several independent-excited stretchable sheet can drive separately or in groups, and driving phase difference that is each or often group independent-excited stretchable sheet can be 0 degree; The resonance frequency of the driving frequency of piezoelectricity stretchable sheet and the basal body of nut of cantilever beam state matches or close, excites the basal body of nut of cantilever beam state to be in ultrasonic vibration state with this.
The present invention can when its sharp drive singal of independent-excited stretchable sheet input, and make the self-locking operating state of basal body of nut change into unblock operating state, the coefficient of friction namely between screw thread pair significantly reduces, and the self-locking operating state between basal body of nut and screw rod is disappeared.The present invention also has that structure is simple, cost of manufacture 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 thread pair securing member and driving member.
Accompanying drawing explanation
Fig. 1 is the structural representation after the screw rod 1-4 that can be rotatably connected in Unlockable nut of SMD cantilever beam bending vibration mode of operation of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram;
Fig. 3 is the structural representation on each plane 1-1 of the present invention when being provided with multiple independent-excited stretchable sheet 2;
Fig. 4 be in Fig. 3 B-B to sectional structure schematic diagram;
Fig. 5 be in Fig. 3 C-C to sectional structure schematic diagram;
Fig. 6 be in Fig. 3 D-D to sectional structure schematic diagram.
Embodiment
Embodiment one: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, this embodiment is made up of the basal body of nut 1 of cantilever beam state, multi-disc independent-excited stretchable sheet 2;
The basal body of nut 1 of cantilever beam state is cantilever beam the way of restraint, and the basal body of nut 1 of cantilever beam state is T-shaped project organization, and its T-shaped larger diameter end adopts cantilever beam the way of restraint and is processed with several for installing fixing location hole 1-2; The inner headed face of the basal body of nut 1 of cantilever beam state is provided with internal thread 1-3, the lead angle of screw rod 1-4, internal thread 1-3 of being rotatably connected in the internal thread 1-3 of the basal body of nut 1 of cantilever beam state is less than the equivalent friction angle between internal thread 1-3 and screw rod 1-4 connecting thread pair; On the periphery of the basal body of nut 1 of cantilever beam state, circumferentially direction is provided with multiple plane 1-1 facing each other, total number of plane 1-1 is≤4, each plane 1-1 is provided with one or more pieces independent-excited stretchable sheets 2, and a plane of every sheet independent-excited stretchable sheet 2 is all connected with plane 1-1, on each plane 1-1 when being provided with multiple independent-excited stretchable sheet 2, all independent-excited stretchable sheets 2 on this face all arrange along the axis direction of the basal body of nut 1 of cantilever beam state; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet 2 and the basal body of nut 1 of cantilever beam state; Its sharp frequency of described independent-excited stretchable sheet 2 is in supersonic band; Its sharp type of drive of multi-disc independent-excited stretchable sheet 2 is row wave excitation mode of operation or standing wave exciting mode of operation; Described row wave excitation mode of operation is the driving phase difference 180 degree of the independent-excited stretchable sheet 2 on every two opposite planar 1-1, the driving phase difference 180 degree of the adjacent independent-excited stretchable sheet 2 on each plane 1-1, independent-excited stretchable sheet 2 on every two opposite planar 1-1 drives successively so that circumference is adjacent, the driving phase difference of the independent-excited stretchable sheet 2 on circumference adjacent plane 1-1 90 degree; Described standing wave exciting mode of operation is that each or several independent-excited stretchable sheet 2 can drive separately or in groups, and driving phase difference that is each or often group independent-excited stretchable sheet 2 can be 0 degree.
Embodiment two: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the difference of present embodiment and embodiment one is that described independent-excited stretchable sheet 2 is piezoelectricity stretchable sheet, the resonance frequency of the basal body of nut 1 of its driving frequency and cantilever beam state matches or close, excites the basal body of nut 1 of cantilever beam state to be in ultrasonic vibration state with this; The driving electric signal waveform of piezoelectricity stretchable sheet can be sinusoidal waveform ac signal, square waveform ac signal, triangular waveform ac signal or zigzag ac signal.Other composition is identical with embodiment one with annexation.
Embodiment three: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the difference of present embodiment and embodiment one is that described independent-excited stretchable sheet 2 is magnetostriction sheet, photo-induced telescopic sheet or thermic stretchable sheet.Other composition is identical with embodiment one with annexation.
Embodiment four: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, the difference of present embodiment and embodiment one is that the internal thread 1-3 of the basal body of nut 1 of described cantilever beam state and the external screw thread of screw rod 1-4 can be trapezoidal thread, triangle thread, rectangular thread, saw-tooth thread, gas thread or nonstandard screw thread.Other composition is identical with embodiment one with annexation.
Operation principle: SMD cantilever beam bending vibration mode of operation Unlockable nut mainly Unlockable nut can be in the micro breadth oscillation state of high-frequency (frequency is generally greater than 1000Hz) by the excitation of independent-excited stretchable sheet, the antifriction effect that utilizes dither to produce reduces can coefficient of friction between Unlockable nut and screw rod, destroy the condition of self-locking between screw thread pair, make Unlockable nut to be in unblock operating state.The ultrasonic antifriction effect caused by the micro breadth oscillation of (frequency is generally greater than 13kHz) in supersonic frequency is the one in the antifriction effect of dither, mainly refer to when two kinematic pairs 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 contact-making surface, coefficient of friction reduces, at present this phenomenon confirm by a large amount of experimental studies, this principle of antifriction effect that the present invention mainly utilizes dither to produce carries out work.Generation motion row ripple can superposed in screw thread pair surface between Unlockable nut with screw rod by the mode of vibration coupling simultaneously, this motion row ripple may further be Unlockable nut and screw rod can provide relative motion or movement tendency, and therefore can better realize can the self-locking of Unlockable nut and the switch and control unlocking two kinds of operating states.
SMD cantilever beam bending vibration mode of operation can Unlockable nut mainly utilize can m rank (m is positive integer) the flexural vibration mode B in the axial direction of Unlockable nut
mcarry out work.Unlockable nut can be in B
mduring flexural vibration mode, it shows as vertically for the flexural vibrations on m rank are out of shape.
Claims (3)
1. SMD cantilever beam bending vibration mode of operation can Unlockable nut, it is made up of the basal body of nut (1) of cantilever beam state, multi-disc independent-excited stretchable sheet (2);
The basal body of nut (1) of cantilever beam state is cantilever beam the way of restraint, and the basal body of nut (1) of cantilever beam state is T-shaped project organization, and its T-shaped larger diameter end adopts cantilever beam the way of restraint and is processed with several for installing fixing location hole (1-2); On the periphery of the basal body of nut (1) of cantilever beam state, circumferentially direction is provided with four planes facing each other (1-1), each plane (1-1) is provided with one or more pieces independent-excited stretchable sheets (2), and a plane of every sheet independent-excited stretchable sheet (2) is all connected with plane (1-1), in each plane (1-1) when being provided with multiple independent-excited stretchable sheet (2), all independent-excited stretchable sheets (2) on this face all arrange along the axis direction of the basal body of nut (1) of cantilever beam state; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet (2) and the basal body of nut (1) of cantilever beam state; Its sharp frequency of described independent-excited stretchable sheet (2) is in supersonic band; Its sharp type of drive of multi-disc independent-excited stretchable sheet (2) is row wave excitation mode of operation or standing wave exciting mode of operation; Described row wave excitation mode of operation is the driving phase difference 180 degree of the independent-excited stretchable sheet (2) on every two opposite planar (1-1), the driving phase difference 180 degree of the adjacent independent-excited stretchable sheet (2) in each plane (1-1), independent-excited stretchable sheet (2) on every two opposite planar (1-1) drives successively so that circumference is adjacent, the driving phase difference 90 degree of the independent-excited stretchable sheet (2) on circumference adjacent plane (1-1); Described independent-excited stretchable sheet (2) is piezoelectricity stretchable sheet, and the driving electric signal waveform of piezoelectricity stretchable sheet can be sinusoidal waveform ac signal, square waveform ac signal, triangular waveform ac signal or zigzag ac signal; The inner headed face that it is characterized in that the basal body of nut (1) of cantilever beam state is provided with internal thread (1-3), be rotatably connected in the internal thread (1-3) of the basal body of nut (1) of cantilever beam state screw rod (1-4), and the lead angle of internal thread (1-3) is less than the equivalent friction angle between internal thread (1-3) and screw rod (1-4) connecting thread pair; Described standing wave exciting mode of operation is that each or several independent-excited stretchable sheet (2) can drive separately or in groups, and driving phase difference that is each or often group independent-excited stretchable sheet (2) is 0 degree; The resonance frequency of the driving frequency of piezoelectricity stretchable sheet and the basal body of nut (1) of cantilever beam state matches or close, excites the basal body of nut of cantilever beam state (1) to be in ultrasonic vibration state with this.
2. SMD cantilever beam bending vibration mode of operation according to claim 1 can Unlockable nut, it is characterized in that described independent-excited stretchable sheet (2) is magnetostriction sheet, photo-induced telescopic sheet or thermic stretchable sheet.
3. SMD cantilever beam bending vibration mode of operation according to claim 1 can Unlockable nut, it is characterized in that the internal thread (1-3) of the basal body of nut (1) of described cantilever beam state and the external screw thread of screw rod (1-4) are trapezoidal thread, triangle thread, rectangular thread, saw-tooth thread or nonstandard screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078047.5A CN103161811B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of bending vibration work pattern of surface mount type cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078047.5A CN103161811B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of bending vibration work pattern of surface mount type cantilever beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161811A CN103161811A (en) | 2013-06-19 |
| CN103161811B true CN103161811B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310078047.5A Expired - Fee Related CN103161811B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of bending vibration work pattern of surface mount type cantilever beam |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201518456U (en) * | 2009-09-14 | 2010-06-30 | 缪云灼 | Mini-size rod type thread ultrasonic motor |
| CN102355157A (en) * | 2011-10-10 | 2012-02-15 | 哈尔滨工业大学 | Piezoelectric plate-sandwiched rotary linear ultrasonic motor stator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100704990B1 (en) * | 2005-08-08 | 2007-04-10 | 삼성전기주식회사 | A stator and ceramic tube type ultrasonic motor using the same |
| CN201075845Y (en) * | 2007-09-05 | 2008-06-18 | 清华大学 | Screwed cap type ultrasound electric machine |
| CN101626203B (en) * | 2009-08-19 | 2011-07-20 | 哈尔滨工业大学 | Vibrator of beam type linear ultrasonic motor using bending vibration modes |
-
2013
- 2013-03-12 CN CN201310078047.5A patent/CN103161811B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201518456U (en) * | 2009-09-14 | 2010-06-30 | 缪云灼 | Mini-size rod type thread ultrasonic motor |
| CN102355157A (en) * | 2011-10-10 | 2012-02-15 | 哈尔滨工业大学 | Piezoelectric plate-sandwiched rotary linear ultrasonic motor stator |
Non-Patent Citations (1)
| Title |
|---|
| 基于贴片式弯振模态超声电机驱动电气比例阀的研究;郭向东;《哈尔滨工业大学》;20121225;第11-35页 * |
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| CN103161811A (en) | 2013-06-19 |
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Granted publication date: 20150401 Termination date: 20200312 |