CN103133495B - Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked - Google Patents
Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked Download PDFInfo
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- CN103133495B CN103133495B CN201310078053.0A CN201310078053A CN103133495B CN 103133495 B CN103133495 B CN 103133495B CN 201310078053 A CN201310078053 A CN 201310078053A CN 103133495 B CN103133495 B CN 103133495B
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Abstract
The invention discloses a surface-mounted type nut with a free beam longitudinal working mode and capable of being unlocked, and belongs to the field of fasteners and transmission parts with screw pairs utilized. The surface-mounted type nut with the free beam longitudinal working mode and capable of being unlocked can achieve conversion and control of two working states including self-locking and unlocking among the screw pairs conveniently, rapidly and flexibly. One or a plurality of activated type telescopic pieces are arranged on each plane of the circumference of a nut base body in a free beam state. All activated type telescopic pieces on the same circumference are driven independently or in a group-driving mode. When the group driving is conducted, the driving phase positions are the same. A driving phase difference of adjacent activated type telescopic pieces on each plane is 180 degrees, the numbers of driving activated type telescopic pieces on both sides of a flange plate are the same, and the relative positions are symmetrical and the driving phase positions are the same symmetrically. When activated type driving signals are input into the activated type telescopic pieces (2), the self-locking working state of the nut base body is changed into the unlocking working state, namely a friction coefficient among the screw pairs is reduced greatly, and the self-locking working state between the nut base body and a screw disappears.
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 free beam extensional vibration mode of operation can Unlockable nut.
Described SMD free beam extensional 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 ring flange in the middle part of the basal body of nut of free beam state, the plane of ring flange is processed with several for installing fixing location 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, 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, 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 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; 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, 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 ring flange 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 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 1-5 that can be rotatably connected in Unlockable nut of SMD free beam extensional 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 is the structural representation on each plane 1-1 of the present invention when being provided with multiple independent-excited stretchable sheet 2;
Fig. 5 be in Fig. 4 C-C to sectional structure schematic diagram;
Fig. 6 be in Fig. 4 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 ring flange 1-4 in the middle part of the basal body of nut 1 of free beam state, the plane of ring flange 1-4 is processed with several for installing fixing location 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, 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 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 ring flange 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 resonance frequency of the basal body of nut 1 of its driving 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 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 external screw thread of screw rod 1-5 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 free beam 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 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.
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 free beam 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 (4)
1. SMD free beam extensional 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 ring flange (1-4), the plane of ring flange (1-4) is processed with several for installing fixing location 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), 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 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, 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, 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 number of described ring flange (1-4) both sides driving independent-excited stretchable sheet (2) is equal, relative position is symmetrical all symmetrical identical with driving phase place.
2. SMD free beam extensional vibration mode of operation according to claim 1 can Unlockable nut, it is characterized in 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 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 can be sinusoidal waveform ac signal, square waveform ac signal, triangular waveform ac signal or zigzag ac signal.
3. SMD free beam extensional 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 extensional 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 external screw thread of screw rod (1-5) can be trapezoidal thread, triangle thread, rectangular thread, saw-tooth thread, gas thread or nonstandard screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078053.0A CN103133495B (en) | 2013-03-12 | 2013-03-12 | Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078053.0A CN103133495B (en) | 2013-03-12 | 2013-03-12 | Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133495A CN103133495A (en) | 2013-06-05 |
| CN103133495B true CN103133495B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310078053.0A Expired - Fee Related CN103133495B (en) | 2013-03-12 | 2013-03-12 | Surface-mounted type nut with free beam longitudinal working mode and capable of being unlocked |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116690627B (en) * | 2023-07-31 | 2023-11-07 | 季华实验室 | Mechanical clamping jaw and excitation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767347A (en) * | 2005-11-18 | 2006-05-03 | 清华大学 | Screw thread driven polyhedron ultrasonic motor |
| CN1964175A (en) * | 2006-11-24 | 2007-05-16 | 清华大学 | A screw thread driving polyhedral supersonic micro motor with pre-pressure mechanism |
| 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 (1)
| 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 |
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2013
- 2013-03-12 CN CN201310078053.0A patent/CN103133495B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767347A (en) * | 2005-11-18 | 2006-05-03 | 清华大学 | Screw thread driven polyhedron ultrasonic motor |
| CN1964175A (en) * | 2006-11-24 | 2007-05-16 | 清华大学 | A screw thread driving polyhedral supersonic micro motor with pre-pressure mechanism |
| 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 |
|---|
| 超声波直线电机的研究;白东哲等;《精密制造与自动化》;20040430(第4期);第14-16页及图2 * |
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| CN103133495A (en) | 2013-06-05 |
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Granted publication date: 20150401 Termination date: 20200312 |