CN103133494B - Unlockable nut of patch type free beam torsional vibration operating mode - Google Patents
Unlockable nut of patch type free beam torsional vibration operating mode Download PDFInfo
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- CN103133494B CN103133494B CN201310078051.1A CN201310078051A CN103133494B CN 103133494 B CN103133494 B CN 103133494B CN 201310078051 A CN201310078051 A CN 201310078051A CN 103133494 B CN103133494 B CN 103133494B
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Abstract
The invention provides an unlockable nut of a patch type free beam torsional vibration operating mode, and belongs to the fields of fasters and driving parts, wherein the fasters and driving parts are connected by threaded pairs. The unlockable nut of the patch type free beam torsional vibration operating mode is used for conveniently, rapidly and flexibly achieving switching and control between a self-locking working state and an unlocking working state of a threaded pair. According to the unlockable nut of the patch type free beam torsional vibration operating mode, a plurality of planes are arranged on an excircle surface of a nut base body which is in a free beam state along the peripheral direction, each plane is provided with one more than one external stimulation type extensible piece, an inclined angle a is formed between the extensible direction of all the external stimulation type extensible pieces and the axis of the nut base body in the free beam state, and external stimulation frequency of the external stimulation type extensible pieces is in an ultra-sound frequency range. All external stimulation type extensible pieces on the same circumference can be driven in a single mode or a group mode, when the external stimulation type extensible pieces are driven in the group mode, drive phases of the external stimulation type extensible pieces are the same. The unlockable nut of the patch type free beam torsional vibration operating mode is capable of enabling the self-locking working state of the nut base body to be changed into the unlocking working state when external stimulation drive signals are input into the external stimulation type extensible pieces, namely a friction factor between threaded 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 SMD free beam torsional vibration mode of operation can Unlockable nut.
Described SMD free beam torsional vibration mode of operation can Unlockable nut, be made up of the basal body of nut of free beam state, multi-disc independent-excited stretchable sheet;
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, and be rotatably connected in the internal thread of the basal body of nut of free beam state screw rod; On the periphery of the basal body of nut of free beam 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, all independent-excited stretchable sheets all arrange along the axial direction of the basal body of nut of free beam state; Its sharp frequency of described independent-excited stretchable sheet is in supersonic band; 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 fashion ac signal; 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; Angle a is had between the axis of the telescopic direction of all independent-excited stretchable sheets and the basal body of nut of free beam state, and same line up in adjacent independent-excited stretchable sheet with angle a be positive-angle, the orientation pattern of negative angle is spaced, and make its positive-angle equal with the absolute value of negative angle and be less than 90 degree, the number of the independent-excited stretchable sheet that flange plate both sides also will be made jointly to drive is equal, relative position inversion symmetry is all symmetrical identical with driving phase place; Same all independent-excited stretchable sheets circumferentially can drive separately or in groups, and when driving in groups, it drives phase place all identical, and the driving phase place of the adjacent independent-excited stretchable sheet in each plane is 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 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 1-5 that can be rotatably connected in Unlockable nut of SMD free beam torsional vibration mode of operation of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram;
Fig. 3 be in Fig. 1 B-B to sectional structure schematic diagram;
Fig. 4 be in Fig. 1 SMD free beam torsional vibration mode of operation can the plan structure schematic diagram of Unlockable nut;
Fig. 5 is the structural representation of screw rod 1-5 that each plane 1-1 of the present invention is rotatably connected after being provided with multiple independent-excited stretchable sheet 2;
Fig. 6 be in Fig. 5 SMD free beam torsional vibration mode of operation can the plan structure schematic diagram of Unlockable nut;
Fig. 7 be in Fig. 5 C-C to sectional structure schematic diagram;
Fig. 8 be in Fig. 5 D-D to sectional structure schematic diagram;
Fig. 9 is the structural representation of embodiment two.
Embodiment
Embodiment one: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, this embodiment is made up of the basal body of nut 1 of free beam state, multi-disc independent-excited stretchable sheet 2;
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, on the periphery of the basal body of nut 1 of free beam 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, all independent-excited stretchable sheets 2 all arrange along the axial direction of the basal body of nut 1 of free beam state, angle a is had between the axis of the telescopic direction of all independent-excited stretchable sheets 2 and the basal body of nut 1 of free beam state, and same line up in adjacent independent-excited stretchable sheet 2 with angle a for positive-angle, the orientation pattern of negative angle is spaced, and make its positive-angle equal with the absolute value of negative angle and be less than 90 degree, the number of the independent-excited stretchable sheet 2 that flange plate 1-4 both sides also will be made jointly to drive is equal, relative position inversion symmetry is all symmetrical identical with driving phase place, 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 all identical, and the driving phase place of the adjacent independent-excited stretchable sheet 2 on each plane 1-1 is identical.
Embodiment two: be described see Fig. 9, the difference of present embodiment and embodiment one is that the multiple plane 1-1 in the basal body of nut 1 of described free beam state are square, described independent-excited stretchable sheet 2 is square, when square planar 1-1 being only provided with a square independent-excited stretchable sheet 2, any of square independent-excited stretchable sheet 2 is made to be parallel to any of square planar 1-1.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, Fig. 7, Fig. 8, 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 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 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 four: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, 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 five: be described see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, 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: SMD free beam torsional 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 the m rank around axial direction (m is positive integer) the torsion modes Tm of Unlockable nut can carry out work of SMD free beam torsional vibration mode of operation.Can Unlockable nut when being in Tm torsion modes, it shows as around axial direction is the torsional vibration distortion on m rank.
Claims (4)
1. SMD free beam torsional vibration mode of operation can Unlockable nut, it is made up of the basal body of nut (1) of free beam state, multi-disc independent-excited stretchable sheet (2);
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), on the periphery of the basal body of nut (1) of free beam 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), all independent-excited stretchable sheets (2) all arrange along the axial direction of the basal body of nut (1) of free beam 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, 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 fashion ac signal, 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, angle a is had between the axis of the telescopic direction of all independent-excited stretchable sheets (2) and the basal body of nut (1) of free beam state, and same line up in adjacent independent-excited stretchable sheet (2) with angle a be positive-angle, the orientation pattern of negative angle is spaced, and make its positive-angle equal with the absolute value of negative angle and be less than 90 degree, the number of the independent-excited stretchable sheet (2) that flange plate (1-4) both sides also will be made jointly to drive is equal, relative position inversion symmetry is all symmetrical identical with driving phase place, same all independent-excited stretchable sheets (2) circumferentially can drive separately or in groups, and when driving in groups, it drives phase place all identical, and the driving phase place of the adjacent independent-excited stretchable sheet (2) in each plane (1-1) is identical, the resonant frequency of the driver frequency of piezoelectricity stretchable sheet 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.
2. SMD free beam torsional vibration mode of operation according to claim 1 can Unlockable nut, it is characterized in that the multiple planes (1-1) in the basal body of nut (1) of described free beam state are all square, described independent-excited stretchable sheet (2) is for square, when square planar (1-1) being only provided with one square independent-excited stretchable sheet (2), any of square independent-excited stretchable sheet (2) is made to be parallel to any of square planar (1-1).
3. SMD free beam torsional 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.
4. SMD free beam torsional vibration 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 |
|---|---|---|---|
| CN201310078051.1A CN103133494B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of patch type free beam torsional vibration operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078051.1A CN103133494B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of patch type free beam torsional vibration operating mode |
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| Publication Number | Publication Date |
|---|---|
| CN103133494A CN103133494A (en) | 2013-06-05 |
| CN103133494B true CN103133494B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310078051.1A Expired - Fee Related CN103133494B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut of patch type free beam torsional vibration operating mode |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109281999B (en) * | 2018-11-07 | 2023-09-01 | 段沧桑 | Comprehensive self-locking mechanism |
Citations (3)
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| CN101026343A (en) * | 2007-03-28 | 2007-08-29 | 哈尔滨工业大学 | Multi travelling wave bending-rotation ultrasonic motor stator and ultrasonic motor using same |
| CN102843063A (en) * | 2012-09-05 | 2012-12-26 | 哈尔滨工业大学 | Screw-thread-driven rotary-linear ultrasonic motor using columnar stator high-order bending vibration mode |
| CN102843064A (en) * | 2012-09-29 | 2012-12-26 | 哈尔滨工业大学 | Flexible replaceable screw thread pair driving ultrasonic motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4841432B2 (en) * | 2003-09-08 | 2011-12-21 | ニュー スケール テクノロジーズ インク | Ultrasonic motor for lead screw |
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2013
- 2013-03-12 CN CN201310078051.1A patent/CN103133494B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026343A (en) * | 2007-03-28 | 2007-08-29 | 哈尔滨工业大学 | Multi travelling wave bending-rotation ultrasonic motor stator and ultrasonic motor using same |
| CN102843063A (en) * | 2012-09-05 | 2012-12-26 | 哈尔滨工业大学 | Screw-thread-driven rotary-linear ultrasonic motor using columnar stator high-order bending vibration mode |
| CN102843064A (en) * | 2012-09-29 | 2012-12-26 | 哈尔滨工业大学 | Flexible replaceable screw thread pair driving ultrasonic motor |
Non-Patent Citations (2)
| Title |
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| 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 * |
| 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 * |
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