CN100511957C - Rotary piezoelectric electric machine using clutch coupled driving - Google Patents
Rotary piezoelectric electric machine using clutch coupled driving Download PDFInfo
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- CN100511957C CN100511957C CNB2004100138215A CN200410013821A CN100511957C CN 100511957 C CN100511957 C CN 100511957C CN B2004100138215 A CNB2004100138215 A CN B2004100138215A CN 200410013821 A CN200410013821 A CN 200410013821A CN 100511957 C CN100511957 C CN 100511957C
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- clutch
- clamping cylinder
- piezoelectric ceramic
- screw thread
- electric motor
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- 239000000919 ceramic Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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Abstract
The invention relates to a rotary piezoelectric electric motor driven by clutch couple gearing which belongs to piezoelectric electric motor field. The structure can be divided into three parts: stator, rotor and clutch. The stator is made of fixing bolt, four pieces of piezoelectric ceramic plates, pressing barrel, screw pressing barrel and assembling plate. The rotor is made up of output shaft and left and right gearing covers, the left clutch is arranged in the left end part of the screw pressing barrel and between the left gearing cover, the right clutch is fixed between the end part of the pressing barrel and the gearing cover. The electric motor overcomes the friction energy consumption of the rotary supersonic electric motor which is driven by friction and the deficiency that the maximal torque and lifespan are restrained by the friction. It has merits of low speed and large torque of longwise torsion compound supersonic electric motor, and the structure is simple, long period work is stable, the lifespan is long, the rotating angle can be control accurately.
Description
Technical field:
The rotating piezoelectric motor of employing Clutch Coupling of the present invention transmission belongs to the piezoelectric motor field.
Background technology:
Piezoelectric motor is to utilize the inverse piezoelectric effect of piezoelectric ceramic and the New-type electric machine of micro breadth oscillation.Lean on frictional drive between rotary-type ultrasound electric machine stator and rotor.This frictional drive has limited motor properties, and the energy loss that causes as friction has reduced efficiency of motor; The restriction that maximum moment and life-span are rubbed.The rotating piezoelectric motor of employing Clutch Coupling of the present invention transmission, adopt the Clutch Coupling transmission between stator, rotating shaft, except the advantage that can have longitrorse type ultrasound electric machine low speed, high pulling torque, simple in structure in addition, the advantage that stable, life-span is long, corner can accurately be controlled works long hours.
Summary of the invention:
The objective of the invention is to develop and adopt clutch to come the piezoelectric motor of transmission between a kind of stator, the rotating shaft.It can provide bigger moment of torsion, and higher efficient in the long life-span, has broad application prospects.
Realize that above-mentioned purpose adopts the rotating piezoelectric motor of Clutch Coupling transmission to be made up of stator, rotating shaft and clutch three parts.Stator adopts the Langevin-type transducer form of twist mode Piezoelectric Ceramic, concrete formation is, described stator comprises screw thread clamping cylinder, piezoelectric ceramic piece, mounting disc, fastening bolt, clamping cylinder, wherein mounting disc is clamped in the middle of the piezoelectric ceramic piece, piezoelectric ceramic piece places between screw thread clamping cylinder and the clamping cylinder, fastening bolt and screw thread clamping cylinder are by being threaded, and by fastening bolt with screw thread clamping cylinder, piezoelectric ceramic piece, mounting disc and clamping cylinder connection are tightened to one, holding electrode between piezoelectric ceramic piece and the piezoelectric ceramic piece; Described rotor comprises the output revolving shaft that passes above-mentioned fastening bolt central through hole, Left Drive cover and right drive sleeve, and wherein the Left Drive cover is sleeved on the left end of output revolving shaft, and right drive sleeve is sleeved on the right-hand member of output revolving shaft; Described clutch comprises left clutch and right clutch, and wherein left clutch is fixed between above-mentioned screw thread clamping cylinder left part inner tube wall and the above-mentioned Left Drive cover, and right clutch is fixed between above-mentioned clamping cylinder right part inner tube wall and the above-mentioned right drive sleeve.
The present invention compares with existing ultrasound electric machine technology, and is simple in structure, is easy to control, not only is fit to the application scenario of low speed, high pulling torque, and working stability, life-span are long, and running is accurate.
Description of drawings:
Fig. 1 is the rotating piezoelectric electric machine structure schematic diagram that adopts the Clutch Coupling transmission.
Serial number name among Fig. 1 is: 1 output revolving shaft; 2 screw thread clamping cylinders; 3 piezoelectric ceramic pieces; 4 mounting discs; 5 copper electrodes; 6 fastening bolts; 7 right clutches; 8 clamping cylinders; 9 right drive sleeve; 10 shaft end rings; 11 Left Drive covers; 12 Left Drive covers; 13 outer hubs; 14 springs; Hub in 15; 16 rotors, 17 rollers.
Fig. 2 is that the single order of motor stator reverses vibration shape schematic diagram.
Fig. 3 is a Clutch Coupling transmission mechanism schematic diagram.
Fig. 4 (a) is the polarization and the assembly form schematic diagram of piezoelectric ceramic piece.
Fig. 4 (b) is the mounting means schematic diagram of piezoelectric ceramic piece.
Embodiment
As shown in Figure 1, the present invention is made up of stator, rotating shaft and clutch three parts.The formation of stator is, the piezoelectric ceramic piece 3 that the centre accompanies mounting disc 4 places between screw thread clamping cylinder 2 and the clamping cylinder 8, by the fastening bolt with through hole 6 that links to each other with screw thread clamping cylinder 2 piezoelectric ceramic piece 3, mounting disc 4, screw thread clamping cylinder 2 and clamping cylinder 8 is connected to be tightened to one.Left clutch 11 is fixed in screw thread clamping cylinder 2 left parts and Left Drive is overlapped between 12, right clutch 7 places in clamping cylinder 8 ends and between the right drive sleeve 9, rotor by about two drive sleeve 12 and 9 be installed in the two ends, output revolving shaft 1 left and right sides of passing fastening bolt 6 central through holes respectively and constituted.
Machine operation is when the single order torsional resonance frequency, and the single order of motor stator reverses the vibration shape as shown in Figure 2.Apply a sinusoidal drive voltage for piezoelectric ceramic 3, stator will be along circumferentially doing twisting vibration.In a twisting vibration cycle, preceding half period, left clutch 11 locking rotors make rotating shaft 1 follow screw thread clamping cylinder 2 and rotate together, and right clutch 7 is thrown off with rotor; Half drive cycle in back, stator is done twisting vibration toward rightabout, left clutch 11 and rotating shaft 1 disengagement, right clutch 7 locking rotating shafts continue to drive rotor and follow right clutch 7 toward same direction rotation.In each cycle motor about two sections each once drive.Clutch locking rotating shaft transmission, the energy loss of having avoided friction to cause improves efficiency of motor.
The present invention has utilized the twist mode piezoelectric ceramic piece to swash the single order twisting vibration that Langevin-type transducer, utilizes two clutches that the twisting vibration of stator is converted into rotatablely moving of rotating shaft.Fig. 3 illustrates the structure of clutch and the mechanism of Clutch Coupling transmission.Clutch adopts existing mature technology, has used the commodity-type roller clutch.The outer hub of clutch is fixed on the stator of doing circumferential twisting vibration, follows stator and does circumferential twisting vibration together.When the displacement of outer hub twisting vibration was counter clockwise direction, by hub in the key groove locking of clutch, the driving rotating shaft was done and is rotated counterclockwise.When the torsional displacement of outer hub was clockwise direction, key groove and roller were thrown off, and allowed the internal mutually axle of outer hub to do and turned clockwise.Like this, axle being rotated counterclockwise in the circumferential twisting vibration of outer hub just was converted into.From the above mentioned as can be known, the effect of Clutch Coupling transmission mechanism is similar to the rectification circuit in the electricity, and rectification circuit utilizes the unilateral conduction of diode that alternating current is transformed into direct current; The effect of clutch is the micron-sized twisting vibration with stator, is converted into unidirectional the rotatablely moving of rotating shaft.
Fig. 4 (a) has provided the polarization of piezoelectric ceramic piece and the schematic diagram of assembly form.As can be seen from the figure, the piezoelectric ceramic circle is pasted by 8 fan-shaped fritters and is formed.Provided the polarization situation of each fritter among the figure.Symbol a, b, c represent three translation freedoms, and d, e, f represent three rotary freedoms.Behind the c direction polarization, apply alternating electric field in a direction, will obtain along the twisting vibration of e direction.The little secter pat of each piezoelectric ceramic is along the circumferential direction sticked into a piezoelectric ceramic ring by identical polarised direction, then upper and lower surface is polished, guarantee the depth of parallelism, silver-plated in upper and lower surface again, form electrode.Fig. 4 (b) has provided the mounting means of piezoelectric ceramic ring.Because the distortion that the inverse piezoelectric effect of piezoelectric ceramic ring produces has directivity, therefore the mounting means to piezoelectric ceramic ring has proposed requirement.Apply after the electric field, the torsional deflection direction of 4 piezoelectric ceramic ring generations is identical, promptly or simultaneously produces clockwise torsional deflection, or produces anticlockwise torsional deflection simultaneously.The scheme that Fig. 4 (b) proposes has satisfied this requirement.The next door of each piezoelectric ceramic ring all uses "+" number to mark its front in the drawings, number has marked reverse side with "-".With the front that all should be piezoelectric ceramic as the contacted surface of the copper sheet of positive electrode, the reverse side that all should be piezoelectric ceramic that joins with ground.Motor stator ground connection.
Claims (1)
1, a kind of rotating piezoelectric motor that adopts the Clutch Coupling transmission, comprise stator, rotor and clutch, it is characterized in that, described stator comprises screw thread clamping cylinder (2), piezoelectric ceramic piece (3), mounting disc (4), fastening bolt (6), clamping cylinder (8), wherein mounting disc (4) is clamped in the middle of the piezoelectric ceramic piece (3), piezoelectric ceramic piece (3) places between screw thread clamping cylinder (2) and the clamping cylinder (8), fastening bolt (6) and screw thread clamping cylinder (2) are by being threaded, and pass through fastening bolt (6) with screw thread clamping cylinder (2), piezoelectric ceramic piece (3), mounting disc (4) and clamping cylinder (8) connection are tightened to one, holding electrode between the piezoelectric ceramic piece (5); Described rotor comprises the output revolving shaft (1) that passes above-mentioned fastening bolt (6) central through hole, Left Drive cover (12) and right drive sleeve (9), wherein Left Drive cover (12) is sleeved on the left end of output revolving shaft (1), and right drive sleeve (9) is sleeved on the right-hand member of output revolving shaft (1); Described clutch comprises left clutch (11) and right clutch (7), wherein left clutch (11) is fixed between above-mentioned screw thread clamping cylinder (2) left part inner tube wall and the above-mentioned Left Drive cover (12), and right clutch (7) is fixed between clamping cylinder (8) right part inner tube wall and the above-mentioned right drive sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100138215A CN100511957C (en) | 2004-01-06 | 2004-01-06 | Rotary piezoelectric electric machine using clutch coupled driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100138215A CN100511957C (en) | 2004-01-06 | 2004-01-06 | Rotary piezoelectric electric machine using clutch coupled driving |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556583A CN1556583A (en) | 2004-12-22 |
| CN100511957C true CN100511957C (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100138215A Expired - Fee Related CN100511957C (en) | 2004-01-06 | 2004-01-06 | Rotary piezoelectric electric machine using clutch coupled driving |
Country Status (1)
| Country | Link |
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| CN (1) | CN100511957C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350576B (en) * | 2008-09-05 | 2011-06-29 | 清华大学 | Piezoelectric rotary driver |
| CN103066882B (en) * | 2011-10-21 | 2015-07-15 | 郑州航空工业管理学院 | Piezoelectric ceramic driver driving in unsymmetrical voltage mode |
| CN105587793B (en) * | 2015-01-06 | 2017-12-19 | 长春工业大学 | Sandwich complex excitation, which increases, turns round speed-adjustable clutch and its control method |
| CN105587794B (en) * | 2015-01-06 | 2017-12-01 | 长春工业大学 | SMD increase turns round speed-adjustable clutch and its control method |
| CN107863900B (en) * | 2017-12-04 | 2019-06-21 | 合肥工业大学 | A kind of coupling device of miniature impact type Piezoelectric Driving |
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2004
- 2004-01-06 CN CNB2004100138215A patent/CN100511957C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1556583A (en) | 2004-12-22 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20140106 |