CN103133495A - 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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- CN103133495A CN103133495A CN2013100780530A CN201310078053A CN103133495A CN 103133495 A CN103133495 A CN 103133495A CN 2013100780530 A CN2013100780530 A CN 2013100780530A CN 201310078053 A CN201310078053 A CN 201310078053A CN 103133495 A CN103133495 A CN 103133495A
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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 fastening piece that screw pair connects and the driving component field of utilizing.
Background technique
Use very extensive in equipment, system, device and mechanism in current every profession and trade based on the fastening piece of screw pair form and driving component.For the screw pair auxiliary connection, mainly there are two kinds of working staties, be respectively screw thread self-locking state and non-self-locking state, wherein the latter also can be described as released state.Self-locking working state for screw pair, the screw pair that adopts generally should satisfy the screw thread self-locking condition, be lead angle less than the equivalent friction angle between screw pair, main application is fastening, the drive rail of sliding of component and carries out the aspects such as jack that power is transmitted; Release working state for screw pair, namely satisfy lead angle greater than the equivalent friction angle between screw pair, mainly the motion that screws delivery system and the power output that utilizes between nut and screw rod, be embodied in following three aspects, the one, realize rotatablely moving and straight line motion between conversion, the 2nd, for the mutual alignment between each component of adjust system, the 3rd, obtain larger thrust output etc. with less input torque.At present, conversion and control for self-locking between screw pair and two kinds of working staties of release, often need to adopt simultaneously self-locking nut and corresponding release mechanism joint work with auto-lock function to realize, this class realizes that by additional unlocking structure mode the self-locking of screw pair and the mechanism of released state conversion function exist the problems such as complex structure, complex operation, fabricating cost height, the application of having limited screw pair fastening piece and driving component.
Summary of the invention
For easily and fast, realize neatly conversion and the control of self-locking and two kinds of working staties of release between screw pair, the present invention proposes a kind of split nut separated of SMD free beam extensional vibration mode of operation.
The split nut separated of described SMD free beam extensional vibration mode of operation is comprised of basal body of nut, the multi-disc independent-excited stretchable sheet of free beam state;
The basal body of nut of free beam state is the 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, is processed with several on the plane of flange plate and is used for installing the fixedly positioning hole of use; Be provided with internal thread on the inner headed face of the basal body of nut of free beam state, the screw rod that has been rotatably connected in the internal thread of the basal body of nut of free beam state, 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, be provided with a plurality of planes around circumferencial direction, be provided with one or more pieces independent-excited stretchable sheets on each plane, and a plane of every independent-excited stretchable sheet all is connected with the plane, on each plane, when being provided with a plurality of independent-excited stretchable sheet, all the independent-excited stretchable sheets on this face are all arranged along the axial direction of the basal body of nut of free beam state; The flexible direction of described independent-excited stretchable sheet is parallel with the axis of the basal body of nut of free beam state; Its sharp frequency of described independent-excited stretchable sheet is in supersonic band; All independent-excited stretchable sheets on same circumference can drive separately or in groups, its driving phase place is identical when driving in groups, driving phase difference 180 degree of the adjacent independent-excited stretchable sheet on each plane, the number of described flange plate two side drive independent-excited stretchable sheets equates, relative position is symmetrical and it is all symmetrical identical to drive phase place.
The present invention can it swash when driving signal in the input of independent-excited stretchable sheet, makes the self-locking working state of basal body of nut change into the release working state, and namely the friction factor between screw pair significantly reduces, and the self-locking working state between basal body of nut and screw rod is disappeared.That the present invention also has advantages of is simple in structure, fabricating cost is low, applied range, can be used for the aspects such as break-make, location and speed control in machine driven system, has expanded the application of screw pair fastening piece and driving component.
Description of drawings
Fig. 1 is the structural representation after screw rod 1-5 of being rotatably connected in the split nut separated of SMD free beam extensional vibration mode of operation of the present invention;
Fig. 2 be in Fig. 1 A-A to the sectional structure schematic diagram;
Fig. 3 be in Fig. 1 B-B to the sectional structure schematic diagram;
Fig. 4 is the upper structural representation when being provided with a plurality of independent-excited stretchable sheet 2 of each plane 1-1 of the present invention;
Fig. 5 be in Fig. 4 C-C to the sectional structure schematic diagram;
Fig. 6 be in Fig. 4 D-D to the sectional structure schematic diagram.
Embodiment
Embodiment one:Describe referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, this embodiment is comprised of basal body of nut 1, the multi-disc independent-excited stretchable sheet 2 of free beam state;
The basal body of nut 1 of free beam state is the free beam the way of restraint, and basal body of nut 1 middle part of free beam state is provided with a flange plate 1-4, is processed with several on the plane of flange plate 1-4 and is used for installing the fixedly positioning hole 1-3 of use; Be provided with internal thread 1-2 on the inner headed face of the basal body of nut 1 of free beam state, the screw rod 1-5 that has been rotatably connected in the internal thread 1-2 of the basal body of nut 1 of free beam state, the lead angle of internal thread 1-2 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, be provided with a plurality of plane 1-1 around circumferencial direction, be provided with one or more pieces independent-excited stretchable sheets 2 on each plane 1-1, and a plane of every independent-excited stretchable sheet 2 all is connected with plane 1-1, each plane 1-1 is upper when being provided with a plurality of independent-excited stretchable sheet 2, and all the independent-excited stretchable sheets 2 on this face are all arranged along the axial direction of the basal body of nut 1 of free beam state; The flexible direction of described independent-excited stretchable sheet 2 is parallel with the axis 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; All independent-excited stretchable sheets 2 on same circumference can drive separately or in groups, its driving phase place is identical when driving in groups, 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 two side drive independent-excited stretchable sheets 2 equates, relative position is symmetrical and it is all symmetrical identical to drive phase place.
Embodiment two:Describe referring to 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 the piezoelectricity stretchable sheet, the resonant frequency of the basal body of nut 1 of its driver frequency and free beam state matches or is close, excites the basal body of nut 1 of free beam state to be in the 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 and annexation are identical with embodiment one.
Embodiment three:Describe referring to 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 and annexation are identical with embodiment one.
Embodiment four:Describe referring to 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 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 and annexation are identical with embodiment one.
Working principle: the split nut separated of SMD free beam extensional vibration mode of operation is mainly can separate by the excitation of independent-excited stretchable sheet the micro breadth oscillation state that split nut is in high frequency (frequency is generally greater than 1000 Hz), utilize the antifriction effect that dither produces to reduce the friction factor that to separate between split nut and screw rod, destroy the condition of self-locking between screw pair, make and to separate split nut and be in the release working state.A kind of in the antifriction effect that the ultrasonic antifriction effect that is caused by the micro breadth oscillation of (frequency is generally greater than 13 kHz) in ultrasonic frequency is dither, mainly refer to when two kinematic pair are in Frotteurism, make wherein one or two contact surface be in the ultrasonic vibration state by applying of ultrasonic vibration and cause the phenomenon that between surface of contact, friction factor reduces, this phenomenon is confirmed by a large amount of experimental researcies at present, and this principle of antifriction effect that the present invention mainly utilizes dither to produce is carried out work.
The split nut separated of SMD free beam extensional vibration mode of operation mainly utilizes the m rank along axial direction (m is positive integer) the extensional vibration mode Lm that can separate split nut to carry out work.In the time of can separating split nut and be in Lm extensional vibration mode, it shows as in axial direction the extensional vibration distortion for the m rank.
Claims (4)
1. the split nut separated of SMD free beam extensional vibration mode of operation, is characterized in that it is comprised of basal body of nut (1), the multi-disc independent-excited stretchable sheet (2) of free beam state;
The basal body of nut of free beam state (1) is the free beam the way of restraint, is provided with a flange plate (1-4) in the middle part of the basal body of nut of free beam state (1), is processed with several on the plane of flange plate (1-4) and is used for installing the fixedly positioning hole of use (1-3); Be provided with internal thread (1-2) on the inner headed face of the basal body of nut of free beam state (1), the screw rod (1-5) that has been rotatably connected in the internal thread (1-2) of the basal body of nut of free beam state (1), the lead angle of internal thread (1-2) 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 of free beam state (1), be provided with a plurality of planes (1-1) around circumferencial direction, be provided with one or more pieces independent-excited stretchable sheets (2) on each plane (1-1), and a plane of every independent-excited stretchable sheet (2) all is connected with plane (1-1), each plane (1-1) is upper when being provided with a plurality of independent-excited stretchable sheets (2), and all the independent-excited stretchable sheets (2) on this face are all arranged along the axial direction of the basal body of nut (1) of free beam state; The flexible direction of described independent-excited stretchable sheet (2) is parallel with the axis 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; All independent-excited stretchable sheets (2) on same circumference can drive separately or in groups, its driving phase place is identical when driving in groups, 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) two side drive independent-excited stretchable sheets (2) equates, relative position is symmetrical and it is all symmetrical identical to drive phase place.
2. the split nut separated of SMD free beam extensional vibration mode of operation according to claim 1, it is characterized in that described independent-excited stretchable sheet (2) is the piezoelectricity stretchable sheet, the resonant frequency of the basal body of nut of its driver frequency and free beam state (1) matches or is close, excites the basal body of nut (1) of free beam state to be in the 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.
3. the split nut separated of SMD free beam extensional vibration mode of operation according to claim 1, is characterized in that described independent-excited stretchable sheet (2) is magnetostriction sheet, photo-induced telescopic sheet or thermic stretchable sheet.
4. the split nut separated of SMD free beam extensional vibration mode of operation according to claim 1 is characterized in that the internal thread (1-2) of 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 |
|---|---|---|---|
| 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 true CN103133495A (en) | 2013-06-05 |
| CN103133495B 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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| CN (1) | CN103133495B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116690627A (en) * | 2023-07-31 | 2023-09-05 | 季华实验室 | Mechanical clamping jaw and excitation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060049720A1 (en) * | 2003-09-08 | 2006-03-09 | David Henderson | Mechanism comprised of ultrasonic lead screw motor |
| 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 |
-
2013
- 2013-03-12 CN CN201310078053.0A patent/CN103133495B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060049720A1 (en) * | 2003-09-08 | 2006-03-09 | David Henderson | Mechanism comprised of ultrasonic lead screw motor |
| 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 |
|---|
| 白东哲等: "超声波直线电机的研究", 《精密制造与自动化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116690627A (en) * | 2023-07-31 | 2023-09-05 | 季华实验室 | Mechanical clamping jaw and excitation method thereof |
| CN116690627B (en) * | 2023-07-31 | 2023-11-07 | 季华实验室 | Mechanical clamping jaw and excitation method thereof |
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| Publication number | Publication date |
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| CN103133495B (en) | 2015-04-01 |
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Granted publication date: 20150401 Termination date: 20200312 |