CN103148078B - Unlockable nut in paster-type free beam longitudinal torsion state switching working mode - Google Patents
Unlockable nut in paster-type free beam longitudinal torsion state switching working mode Download PDFInfo
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- CN103148078B CN103148078B CN201310078011.7A CN201310078011A CN103148078B CN 103148078 B CN103148078 B CN 103148078B CN 201310078011 A CN201310078011 A CN 201310078011A CN 103148078 B CN103148078 B CN 103148078B
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Abstract
The invention discloses an unlockable nut in a paster-type free beam longitudinal torsion state switching working mode, and belongs to the field of fasteners and transmission members connected by screw thread pairs. The unlockable nut achieves switching and controlling of a self-locking working state and an unlocking working state of screw thread pairs conveniently, quickly and flexibly. One or more separate-excitation extension pieces are arranged on each plane on the circumference of a nut matrix in a free beam state of the unlockable nut; a plurality of deep grooves or a plurality of columns of small holes are formed in the planes on the circumference of the nut matrix; all the separate-excitation extension pieces on the same circumference can be driven independently or in groups; drive phase differences of the adjacent separate-excitation extension pieces on each plane are 180 degrees; the quantities of the separate-excitation extension pieces on the two sides of a flange plate are equal; relative positions of the separate-excitation extension pieces on the two sides of the flange plate are symmetrical; and drive phases of the separate-excitation extension pieces on the two sides of the flange plate are symmetrical and identical. According to the unlockable nut, the self-locking working state of the nut matrix can be changed to the unblocking working state when the separate-excitation extension pieces input separate-excitation drive signals, that is a friction coefficient between the screw thread pairs is reduced greatly, so that the self-locking working state between the nut matrix and a screw rod disappears.
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 paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A mode of operation can Unlockable nut.
Described paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A 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, and the lead angle of internal thread is less than the equivalent friction angle between internal thread and screw rod connecting thread pair; On the periphery of the basal body of nut of free beam state, circumferentially direction is provided with multiple plane; 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 all planes 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 all planes 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; 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 free beam state; The axis being parallel of the telescopic direction of described independent-excited stretchable sheet and the basal body of nut of free beam state; Its sharp frequency of described independent-excited stretchable sheet is in supersonic band; Same all independent-excited stretchable sheets circumferentially can drive separately or in groups, when driving in groups, it drives phase place identical, the driving phase difference 180 degree of the adjacent independent-excited stretchable sheet in each plane, the number of described flange plate both sides driving independent-excited stretchable sheet is equal, relative position is symmetrical all symmetrical identical with driving phase place.
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 paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A 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 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;
Fig. 6 is the structural representation on each plane 1-1 of the present invention when being provided with multiple independent-excited stretchable sheet 2;
Fig. 7 be in Fig. 6 C-C to sectional structure schematic diagram;
Fig. 8 be in Fig. 6 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 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; 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 all plane 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 all plane 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; 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 free 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 free beam 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, 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, the number of described flange plate 1-4 both sides driving independent-excited stretchable sheet 2 is equal, relative position is symmetrical all symmetrical identical with driving phase place.
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 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 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 1-2 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: paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A mode of operation Unlockable nut mainly Unlockable nut can be in the micro breadth oscillation state of high frequency (frequency is generally greater than 1000 Hz) 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 13 kHz) 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.
Paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A mode of operation can Unlockable nut mainly utilize independent-excited stretchable sheet 2 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.
Claims (3)
1. paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A 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); 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 all planes (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 all planes (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; 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 free 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 free beam state; Its sharp frequency of described independent-excited stretchable sheet (2) is in supersonic band; The number of described flange plate (1-4) both sides driving independent-excited stretchable sheet (2) is equal, relative position is symmetrical all symmetrical identical with driving phase place; 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; 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) in each plane (1-1); 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. paster-type free beam longitudinal torsion state MODAL TRANSFORMATION OF A 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. paster-type free beam longitudinal torsion state 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 or nonstandard screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078011.7A CN103148078B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut in paster-type free beam longitudinal torsion state switching working mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078011.7A CN103148078B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut in paster-type free beam longitudinal torsion state switching working mode |
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| Publication Number | Publication Date |
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| CN103148078A CN103148078A (en) | 2013-06-12 |
| CN103148078B true CN103148078B (en) | 2015-04-08 |
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| CN201310078011.7A Expired - Fee Related CN103148078B (en) | 2013-03-12 | 2013-03-12 | Unlockable nut in paster-type free beam longitudinal torsion state switching working 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 |
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| CN101777853A (en) * | 2010-01-12 | 2010-07-14 | 南京航空航天大学 | d31-effect based unidirectional chip longitudinal-torsional compound ultrasonic motor |
| CN102177648A (en) * | 2008-08-18 | 2011-09-07 | 新阶科技股份有限公司 | Reduced-voltage, linear motor systems and methods thereof |
| 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 |
| 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 |
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2013
- 2013-03-12 CN CN201310078011.7A patent/CN103148078B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| CN102177648A (en) * | 2008-08-18 | 2011-09-07 | 新阶科技股份有限公司 | Reduced-voltage, linear motor systems and methods thereof |
| CN101777853A (en) * | 2010-01-12 | 2010-07-14 | 南京航空航天大学 | d31-effect based unidirectional chip longitudinal-torsional compound ultrasonic motor |
| 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 |
| 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 |
Non-Patent Citations (2)
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| 行波型超声波电机摩擦特性的实验研究;王文浩等;《摩擦学学报》;20100331;第30卷(第2期);第322-325页 * |
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Granted publication date: 20150408 Termination date: 20200312 |