CN102801354A - Integrated micro-step rotating device using flexible hinge - Google Patents
Integrated micro-step rotating device using flexible hinge Download PDFInfo
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- CN102801354A CN102801354A CN2012102744159A CN201210274415A CN102801354A CN 102801354 A CN102801354 A CN 102801354A CN 2012102744159 A CN2012102744159 A CN 2012102744159A CN 201210274415 A CN201210274415 A CN 201210274415A CN 102801354 A CN102801354 A CN 102801354A
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Abstract
The invention provides an integrated micro-step rotating device using a flexible hinge, belonging to the technical field of micro-displacement. The integrated micro-step rotating device comprises a set screw, a core mechanism, and an electrostriction device; the core mechanism is formed by connecting an output ring, a gasless axial movement structure, two micro-step rotating components, six flexible hinge rods, and a C-shaped ring. The integrated micro-step rotating device can be entirely used as a part by using a linear cutting process, so that no welding exists. The integrated micro-step rotating device provided by the invention uses the electrostriction device as a driving element to input axial micro-displacement, so that the micro-corner output can be realized. The integrated micro-step rotating device has the advantages of simple and economical structure and high precision, and is applicable to a precise machine and precise instrument industry.
Description
Technical field
The present invention relates to a kind of rotating driving device, in particular, relate to a kind of integral type micro-stepping that is used for the employing flexible hinge of precision optical machinery and precision instrument industry and advance whirligig, belong to the mechanical & electrical technology field.
Background technology
The micrometric displacement technology is one of key technology of precision optical machinery and precision instrument, in recent years along with subject development such as microelectric technique, aerospace, bioengineering and develop by leaps and bounds.The micrometric displacement Mechatronic Systems is widely used in fields such as microelectronic engineering, measuring science and technology, precision engineering, scanning probe microscope, ultraprecise processing, optical element manufacturing, biomedical engineering, nanometer science and technologies.It is one of critical component of micrometric displacement Mechatronic Systems that rotating driver is advanced in micro-stepping, about the level of its drive principle and location technology the characteristic and the performance of whole micrometric displacement Mechatronic Systems, therefore directly have influence on the development of high precision technology such as microelectric technique.The research of micro-displacement driver and implementation thereof has become the emphasis problem that micromachine field, the world is competitively studied.
Piezoelectricity, electrostretch device have compact conformation, volume is little, resolution is high and control advantages such as simple, and it does not have heating problem simultaneously, so in precision optical machinery, obtained extensive use.Thereby utilizing piezoelectricity, electrostretch device and high-precision mechanism to constitute next-generation drive is current miniature, the accurate research emphasis that drives.
At present the technology of output straight line micrometric displacement is very ripe, and the micro-displacement mechanism of exporting little corner but seldom.In recent years, domestic and international colleges and universities and scientific research institution develop the micrometric displacement driving mechanism of function admirable one after another; Although relevant theoretical and imagination is arranged, can realize big stroke, little rotating mechanism of high-precision rotation is very few; The present little rotating driver complex structure of existing big stroke, expensive precision simultaneously are difficult to guarantee.
The micro-displacement mechanism output and the core institution of traditional little corner of output have radial clearance, can cause little corner accuracy of output not high, even output do not rotate.
Summary of the invention
The objective of the invention is to deficiency, provide a kind of integral type micro-stepping of employing flexible hinge of economy simple in structure to advance whirligig, convert the axial micrometric displacement of importing to little corner output, realize that the two-way rotation of little corner drives to prior art.
The technical problem that the present invention solved can adopt following technical scheme to realize:
Adopt the integral type micro-stepping of flexible hinge to advance whirligig, its design feature is: this whirligig comprises holding screw, core institution, electrostretch device;
Said core institution moves axially structure, two tapped micro-steppings of annular in two output rings, two no gaps and advances rotating parts, six flexible hinge bars and C and encircle and be formed by connecting; Said output ring and micro-stepping advance between the rotating parts to move axially structure through no gap and be connected and have end play, and said no gap moves axially structure and is made up of two groups of parallel flexible hinge bars; Said two groups of parallel flexible hinge bars are perpendicular to exporting annulate shaft to setting, and the one of which end is connected on the output ring, and the other end is connected micro-stepping and advances on the rotating parts boss; Rotating parts is connected the C ring through the flexible hinge bar axial two ends are entered in described two micro-steppings; Described six flexible hinge pole pairs claim to be distributed in C ring both sides;
Wherein said output ring, C ring all can radially be pinned, and the output ring is axially fixed; Said electrostretch device two ends are advanced rotating parts with the micro-stepping that is arranged on C ring two ends respectively through holding screw and are fixedly connected, and said electrostretch device does not contact with the C ring.
Design feature of the present invention also is: said core institution is to be formed by a whole line cutting processing that adopts, and said core institution material is a spring steel.
Compared with present technology, beneficial effect of the present invention is embodied in:
1, the present invention adopt volume little, do not have machinery friction, highly sensitive flexible hinge core institution structural design, can realize that driver is microminiaturized, have the high characteristics of output sensitivity simultaneously.
2, the whole employing of the present invention symmetrical structure design, electrostretch device is concentric with output shaft simultaneously, thereby can realize high-precision dual output.
3, the present invention can be as required through axial micrometric displacement conversion, the output clockwise perhaps counterclockwise little corner of core institution with electrostretch device.
4, the present invention's economy simple in structure, error is little, output is accurate.
5, the no gap of the present invention's employing moves axially structure and has solved radial clearance problem before effectively, thereby has improved the precision of little corner of output greatly.
Description of drawings
Fig. 1 is apparatus of the present invention structure three-dimensional cutaway view.
Fig. 2 is the three-dimensional cutaway view of core institution of the present invention.
Fig. 3 advances the whirligig outline drawing for the integral type micro-stepping of adopting flexible hinge.
Fig. 4 advances the rotating parts structure chart for micro-stepping.
Fig. 5 is the A-A cutaway view of Fig. 4.
Shown in accompanying drawing, mechanism of the present invention mainly comprises: holding screw 1, core texture 2, electrostretch device 3, output ring 4, no gap move axially structure 5, two micro-steppings and advance rotating parts 6, six flexible hinge bars 7 and C and encircle 8.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is done and to be further described.
Structure of the present invention mainly is made up of holding screw 1, core institution 2, electrostretch device 3 shown in accompanying drawing.Wherein core institution 2 adopts the line cutting processing to form by a Monolithic spring steel; Comprise that output ring 4, no gap move axially structure 5, two micro-steppings and advance rotating parts 6, six flexible hinge bars 7 and C and encircle 8; Output ring 4 and micro-stepping advance between the rotating parts 6 to move axially structure 5 through no gap and be connected and have end play, and no gap moves axially structure 5 and is made up of two groups of parallel flexible hinge bars; The flexible hinge bar is perpendicular to exporting annulate shaft to setting, and the one of which end is connected on the output ring, and the other end is connected micro-stepping and advances on the rotating parts boss; Rotating parts 6 is connected C ring 8 through the flexible hinge bar axial two ends are entered in two micro-steppings; About this flexible hinge bar each three, circumferentially evenly distribute along C ring.During practical implementation, each hinge-rod all has angle with the bus that C encircles.
Wherein said output ring 4, C ring 8 all can radially be pinned, and output ring 4 is axially fixed; Electrostretch device 3 two ends are advanced rotating parts 4 with the micro-stepping that is arranged on C ring two ends respectively through holding screw 1 and are fixedly connected (holding screw 1 is connected with electrostretch device 3 end internal threads, is connected with output ring external screw thread), relative motion; Electrostretch device 3 does not contact with C ring 8.
If pin output ring 4, micro-stepping is advanced rotating parts 6 and is radially pinned; Because output ring 4 and micro-stepping advance between the rotating parts 6 to have end play, rotating parts 6 minute movement is vertically advanced in micro-stepping.Electrostretch device 3 is a driving element, and electrostretch device 3 power shafts are when micrometric displacement, and the orientation rotation of rotating parts 6, C ring 8 is advanced in the flexural deformation of the hinge through flexible hinge bar 7 and micro-stepping, can be through little corner of output ring 4 output line sexual intercourse.
The present invention can export clockwise or counterclockwise little corner through output shaft through the lock sequence of change C ring 8 and output ring 4.The concrete course of work is following:
When needing the clockwise little corner of output: (1) system is in initial condition, and output ring 4 is axially fixed; (2) pin C ring 8; Electrostretch device 3 energising back elongations; Because axial tension effect; Micro-stepping is advanced rotating parts 6 and is produced displacement to axial, and micro-stepping is simultaneously advanced the twisting resistance effect that rotating parts 6 receives flexible hinge bar 7 and turned over an angle clockwise, and 4 outputs synchronously of two ends output ring are (like Fig. 2 direction of rotation) little corners clockwise; (3) pin output ring 4; Then micro-stepping is advanced rotating parts 6 and is radially pinned, and this moment, rotating parts 4 is advanced in micro-stepping can move axially structure minute movement vertically through no gap because output ring 4 and micro-stepping advance between the rotating parts 6 to have end play; Unclamp C ring 8; Electrostretch device 3 outage is returned to raw footage, and the reduced distances between the rotating parts 6 is advanced in two micro-steppings, and C ring 8 rotates under the driving of flexible hinge bar 7 with micro-stepping and advances the original relative position of rotating parts 6; (4) control procedure of repetition (2)～(3), micro-stepping are advanced rotating parts 6 and are driven the continuous clockwise rotation of output ring 4, realize little corner output.
When needing the counterclockwise little corner of output: (1) system is in initial condition, and output ring 4 is axially fixed; (2) pin output ring 4; Then micro-stepping is advanced rotating parts 6 and is radially pinned, electrostretch device 5 energising back elongations, and exist end play because 6 of rotating partss are advanced in output ring 4 and micro-stepping this moment; Rotating parts 6 is advanced in micro-stepping can move axially structure minute movement vertically through no gap; Because the axial tension effect, micro-stepping is advanced rotating parts 6 and is produced displacement to axial, and C ring 8 turns over an angle counterclockwise simultaneously; (3) pin C ring 8; Unclamp output ring 4; Electrostretch device 3 outages are returned to raw footage; The reduced distances between the rotating parts 6 is advanced in micro-stepping, and micro-stepping is simultaneously advanced rotating parts 6 and under the driving of flexible hinge bar 7, turned over an angle counterclockwise and get back to C and encircle 8 original relative positions, thereby realizes the 4 counterclockwise little corners outputs of output ring; (4) control procedure of repetition (2)～(3), micro-stepping are advanced rotating parts 4 and are driven the continuous counterclockwise rotation of output ring 4, realize little corner output.
Claims (2)
1. adopt the integral type micro-stepping of flexible hinge to advance whirligig, it is characterized in that: this whirligig comprises holding screw (1), core institution (2), electrostretch device (3);
Said core institution (2) moves axially structure (5), two tapped micro-steppings of annular in two output rings (4), two no gaps and advances rotating parts (6), six flexible hinge bars (7) and C and encircle (8) and be formed by connecting; Said output ring (4) and micro-stepping advance between the rotating parts (6) to move axially structure (5) through no gap and be connected and have end play, and said no gap moves axially structure (5) and is made up of two groups of parallel flexible hinge bars; Said two groups of parallel flexible hinge bars are perpendicular to exporting annulate shaft to setting, and the one of which end is connected on the output ring, and the other end is connected micro-stepping and advances on the rotating parts boss; Rotating parts (6) is connected C ring (8) through the flexible hinge bar axial two ends are entered in described two micro-steppings; Described six flexible hinge pole pairs claim to be distributed in C ring both sides;
Wherein said output ring (4), C ring (8) all can radially be pinned, and output ring (4) is axially fixed; Said electrostretch device (3) two ends are advanced rotating parts (4) with the micro-stepping that is arranged on C ring two ends respectively through holding screw (1) and are fixedly connected, and said electrostretch device (3) does not contact with C ring (8).
2. whirligig is advanced in the integral type micro-stepping of employing flexible hinge according to claim 1, it is characterized in that: said core institution is to be formed by a whole line cutting processing that adopts, and said core institution material is a spring steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102744159A CN102801354A (en) | 2012-08-01 | 2012-08-01 | Integrated micro-step rotating device using flexible hinge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102744159A CN102801354A (en) | 2012-08-01 | 2012-08-01 | Integrated micro-step rotating device using flexible hinge |
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| CN102801354A true CN102801354A (en) | 2012-11-28 |
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| CN2012102744159A Pending CN102801354A (en) | 2012-08-01 | 2012-08-01 | Integrated micro-step rotating device using flexible hinge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035839A1 (en) * | 2013-09-10 | 2015-03-19 | 中兴通讯股份有限公司 | Camera and mobile terminal |
| CN112290824A (en) * | 2020-09-14 | 2021-01-29 | 南京航空航天大学 | Threaded piezoelectric linear actuator with high thrust and working method thereof |
| CN117175970A (en) * | 2023-11-03 | 2023-12-05 | 吉林大学 | Seal motion-imitating piezoelectric stepping linear actuator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319257A (en) * | 1992-07-13 | 1994-06-07 | Martin Marietta Energy Systems, Inc. | Unitaxial constant velocity microactuator |
| CN2412689Y (en) * | 2000-03-22 | 2001-01-03 | 哈尔滨工业大学 | Integrated bionic creeping microdriving device |
-
2012
- 2012-08-01 CN CN2012102744159A patent/CN102801354A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319257A (en) * | 1992-07-13 | 1994-06-07 | Martin Marietta Energy Systems, Inc. | Unitaxial constant velocity microactuator |
| CN2412689Y (en) * | 2000-03-22 | 2001-01-03 | 哈尔滨工业大学 | Integrated bionic creeping microdriving device |
Non-Patent Citations (2)
| Title |
|---|
| 尹大亮: "压电微步进旋转驱动器的研究", 《万方数据知识服务平台》 * |
| 沈健、俞涛、张海岩: "新型二自由度微动工作台的设计和有限元分析", 《机械工程师》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035839A1 (en) * | 2013-09-10 | 2015-03-19 | 中兴通讯股份有限公司 | Camera and mobile terminal |
| CN112290824A (en) * | 2020-09-14 | 2021-01-29 | 南京航空航天大学 | Threaded piezoelectric linear actuator with high thrust and working method thereof |
| CN117175970A (en) * | 2023-11-03 | 2023-12-05 | 吉林大学 | Seal motion-imitating piezoelectric stepping linear actuator |
| CN117175970B (en) * | 2023-11-03 | 2024-01-23 | 吉林大学 | Seal motion-imitating piezoelectric stepping linear actuator |
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Application publication date: 20121128 |