CN103115058B - Paster type unlockable nut of longitudinal vibration working mode of cantilever beam - Google Patents
Paster type unlockable nut of longitudinal vibration working mode of cantilever beam Download PDFInfo
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- CN103115058B CN103115058B CN201310078045.6A CN201310078045A CN103115058B CN 103115058 B CN103115058 B CN 103115058B CN 201310078045 A CN201310078045 A CN 201310078045A CN 103115058 B CN103115058 B CN 103115058B
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Abstract
The invention discloses a paster type unlockable nut of a longitudinal vibration working mode of a cantilever beam, belongs to the field of fasteners and transmission pieces connected through screw thread pairs, and aims to achieve the changing over and control of the self-locking working mode and the unlocking working mode of the screw thread pairs conveniently, fast and flexibly. A plurality of planes are arranged on the excircle surface of a nut base body of a cantilever beam status of the paster type unlockable nut around a peripheral direction. One other-stimulating type flexible sheet or a plurality of other-stimulating type flexible sheets are arranged on each plane, one plane of each other-stimulating type flexible sheet is connected with the plane, and all the other-stimulating type flexible sheets on an identical periphery can be driven separately or in groups. When the other-stimulating type flexible sheets are driven in groups, the driving phases of the other-stimulating type flexible sheets are identical, and the driving phase difference of adjacent other-stimulating type flexible sheets of each plane is 180 degrees. The paster type unlockable nut of the longitudinal vibration working mode of the cantilever beam enables the self-locking working mode of the nut base body to change to the unlocking working mode when other-stimulating signals are input into the other-stimulating type flexible sheets, and the friction coefficient between the screw thread pairs is greatly reduced, and the self-locking working mode between the nut base body and a screw rod is eliminated.
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 SMD overhang extensional vibration mode of operation can Unlockable nut.
Described SMD overhang extensional vibration mode of operation can Unlockable nut, be made up of the basal body of nut of overhang state, multi-disc independent-excited stretchable sheet;
The basal body of nut of overhang state is overhang the way of restraint, and the basal body of nut of overhang state is T-shaped project organization, and its T-shaped larger diameter end adopts overhang the way of restraint and is processed with several for installing fixing positioning hole; On the periphery of the basal body of nut of overhang state, circumferentially direction is provided with multiple plane, 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 axial direction of the basal body of nut of overhang state; The driving phase difference 180 degree of the adjacent independent-excited stretchable sheet in each plane; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet and the basal body of nut of overhang state; Its sharp frequency of described independent-excited stretchable sheet is in supersonic band; Described independent-excited stretchable sheet is piezoelectricity stretchable sheet; 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 fashion ac signal; The inner headed face of the basal body of nut of overhang state is provided with internal thread, and be rotatably connected in the internal thread of the basal body of nut of overhang 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; Same all independent-excited stretchable sheets circumferentially can drive separately or 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 overhang state matches or close, excites the basal body of nut of overhang 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 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 1-4 that can be rotatably connected in Unlockable nut of SMD overhang extensional 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 overhang state, multi-disc independent-excited stretchable sheet 2;
The basal body of nut 1 of overhang state is overhang the way of restraint, and the basal body of nut 1 of overhang state is T-shaped project organization, and its T-shaped larger diameter end adopts overhang the way of restraint and is processed with several for installing fixing positioning hole 1-2; The inner headed face of the basal body of nut 1 of overhang 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 overhang 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 overhang state, circumferentially direction is provided with multiple plane 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, 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 axial direction of the basal body of nut 1 of overhang state; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet 2 and the basal body of nut 1 of overhang state; Its sharp frequency of described independent-excited stretchable sheet 2 is in supersonic band; Same all independent-excited stretchable sheets 2 circumferentially can drive separately or in groups, and when driving in groups, it drives phase place identical, the driving phase difference 180 degree of the adjacent independent-excited stretchable sheet 2 on each plane 1-1.
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 resonant frequency of the basal body of nut 1 of its driver frequency and overhang state matches or close, excites the basal body of nut 1 of overhang 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 fashion 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 overhang state and the outside thread of screw rod 1-4 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: SMD overhang extensional 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 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.
Unlockable nut mainly can utilizing and m rank (m is positive integer) the longitudinal vibration mode Lm in the axial direction of Unlockable nut can carry out work of SMD overhang extensional vibration mode of operation.Can Unlockable nut when being in Lm longitudinal vibration mode, it shows as in axial direction for the extensional vibration on m rank is out of shape.
Claims (2)
1. SMD overhang extensional vibration mode of operation can Unlockable nut, it is made up of the basal body of nut (1) of overhang state, multi-disc independent-excited stretchable sheet (2);
The basal body of nut (1) of overhang state is overhang the way of restraint, and the basal body of nut (1) of overhang state is T-shaped project organization, and its T-shaped larger diameter end adopts overhang the way of restraint and is processed with several for installing fixing positioning hole (1-2); On the periphery of the basal body of nut (1) of overhang state, circumferentially direction is provided with multiple plane (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 axial direction of the basal body of nut (1) of overhang state; The driving phase difference 180 degree of the adjacent independent-excited stretchable sheet (2) in each plane (1-1); The axis being parallel of the telescopic direction of described independent-excited stretchable sheet (2) and the basal body of nut (1) of overhang state; Its sharp frequency of described independent-excited stretchable sheet (2) is in supersonic band; Described independent-excited stretchable sheet (2) is piezoelectricity stretchable sheet; 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 fashion ac signal; The inner headed face that it is characterized in that the basal body of nut (1) of overhang 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 overhang 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; Same all independent-excited stretchable sheets (2) circumferentially can drive separately or 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 (1) of overhang state matches or close, excites the basal body of nut of overhang state (1) to be in ultrasonic vibration state with this.
2. SMD overhang extensional 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 overhang state and the outside thread of screw rod (1-4) 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 |
|---|---|---|---|
| CN201310078045.6A CN103115058B (en) | 2013-03-12 | 2013-03-12 | Paster type unlockable nut of longitudinal vibration working mode of cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078045.6A CN103115058B (en) | 2013-03-12 | 2013-03-12 | Paster type unlockable nut of longitudinal vibration working mode of cantilever beam |
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| Publication Number | Publication Date |
|---|---|
| CN103115058A CN103115058A (en) | 2013-05-22 |
| CN103115058B true CN103115058B (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310078045.6A Expired - Fee Related CN103115058B (en) | 2013-03-12 | 2013-03-12 | Paster type unlockable nut of longitudinal vibration working mode of cantilever beam |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940562B (en) * | 2014-03-07 | 2016-04-06 | 山东建筑大学 | A kind of shock test beam-ends restraint device |
| CN107420394B (en) * | 2017-08-04 | 2019-04-16 | 新昌县羽林街道东商机械厂 | Mechanical arm type sticking piece in pipe device |
| CN109281999B (en) * | 2018-11-07 | 2023-09-01 | 段沧桑 | Comprehensive self-locking mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7309943B2 (en) * | 2003-09-08 | 2007-12-18 | New Scale Technologies, Inc. | Mechanism comprised of ultrasonic lead screw motor |
| JP4472421B2 (en) * | 2004-05-12 | 2010-06-02 | オリンパス株式会社 | Vibration wave motor |
| CN102097971A (en) * | 2009-12-15 | 2011-06-15 | 精拓丽音科技（北京）有限公司 | Piezoelectric ceramic driver for optical focusing and zooming of mobile phone |
| CN102355157B (en) * | 2011-10-10 | 2014-02-12 | 哈尔滨工业大学 | Piezoelectric plate-sandwiched rotary linear ultrasonic motor stator |
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| CN103115058A (en) | 2013-05-22 |
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