CN101267169A - Single driving foot circle arc curve ultrasonic electromotor - Google Patents
Single driving foot circle arc curve ultrasonic electromotor Download PDFInfo
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- CN101267169A CN101267169A CNA2008100370963A CN200810037096A CN101267169A CN 101267169 A CN101267169 A CN 101267169A CN A2008100370963 A CNA2008100370963 A CN A2008100370963A CN 200810037096 A CN200810037096 A CN 200810037096A CN 101267169 A CN101267169 A CN 101267169A
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Abstract
The present invention relates to a single driving foot arc curve ultrasonic electric motor in the technique field of the field of the mechanical and electronic technique. The electric motor is composed of a stator component and a rotor component. The stator component comprises a stator fixing support, an arc metal elastic body, an arc piezoelectric ceramic piece, a driving foot and a pretightening force adjusting screw. The upper and lower surfaces of the arc piezoelectric ceramic piece are coated with an electrode which is evenly distributed along the direction of the circumference. The rotor component comprises an arc slip belt, a supporting wheel and a guiding wheel. The arc slip belt is clamped between the supporting wheel and the driving foot. The pretightening force regulating screw belt is adjusted thereby adjusting the prepressure required between the arc slip belt and the single driving foot. Through controlling the excitation mode of the piezoelectric ceramic piece of the single driving foot arc curve ultrasonic electric motor, the invention can realize the bidirectional curvilinear motion of the arc rotor slip belt without the mechanical steering mechanism. The invention has the advantages of simple structure, large output force, higher velocity and higher efficiency.
Description
Technical field
What the present invention relates to is a kind of ultrasound electric machine of technical field of motors, is specifically related to a kind of single driving foot circle arc curve ultrasonic electromotor.
Background technology
Supersonic motor is a kind of inverse piezoelectric effect and ultrasonic vibration that utilizes piezoelectric ceramic, the microdeformation of material is converted to the next-generation drive of rotor (mover) macroscopic motion, its basic functional principle is to utilize the inverse piezoelectric effect of piezoelectric ceramic to excite elastomer generation ultrasonic vibration to realize the conversion of electric energy to mechanical energy, and convert vibration rotation (straight line) motion of rotor (mover) to, thereby drive load by the rubbing action between the stator and rotor (mover).Compare with traditional electromagnetic motor, ultrasound electric machine can directly be exported the big moment of the slow-speed of revolution, and transient response is fast, positioning accuracy is high, and power density is big, control characteristic is good, not affected by magnetic fields, advantage such as it is accurate to move is in Aero-Space, robot, medicine equipment, precision instrument, fields such as auto industry have a wide range of applications.
Find through literature search prior art, " based on the research of the linear type ultrasound motor of rectangular thin plate in plane vibration " that Liu Jian etc. deliver in " acoustic journal " (2003 28 volume the 1st phase 86-90 page or leaf), a kind of single-driving foot linear type ultrasound motor based on the rectangular thin plate in plane vibration has been proposed in this article, vertical and second order flexural vibration mode is realized rectilinear motion by the single order that utilizes rectangular piezoelectric ceramic plate.Its deficiency is: it can only drive the mover moving linearly, can not do the circular curve motion.Pure piezoelectric ceramic structure usually needs surperficial subregion excitation, and material is more crisp, uses in the big occasion inconvenience of distortion, and its output torque has been subjected to restriction.Simultaneously, also be difficult for being made into complex-shaped structure.Also find in the retrieval, high mountain equality " finite element analysis of supersonic motor mode of oscillation " delivered in " Proceedings of the CSEE " (2002 22 volume o. 11th 92-96 page or leaf) not, having proposed a kind of diameter in this article is the circular ultrasound electric machine of circular row wave mode of 100mm.By the motor oscillating finite Element Analysis of Modes, determined the electric machine structure size, and passed through experimental verification.Its deficiency is: this motor disk structure can only be done the circular order motion of whole circle, can't drive the sliding band of mover and do the reciprocal circular curve motion of short distance.
Summary of the invention
The present invention is directed to the needs of the deficiencies in the prior art and circular arc motion device, propose a kind of single driving foot circle arc curve ultrasonic electromotor.The present invention makes it satisfy the ultrasound electric machine job requirement by the structural design to the circular arc stator, drives the sliding band of mover by stator and do the circular curve motion under driving frequency drives.Satisfy and to be suitable for the environment that workbench or other mechanisms directly do the two-way circular motion of short distance.
The present invention is achieved through the following technical solutions.The present invention is made of stator module and mover assembly.
Stator module comprises that stator fixed mount, circular arc metallic elastic body, the first arc piezoelectric ceramic piece, the second arc piezoelectric ceramic piece, one drive foot and the pretightning force adjustment screw is formed, and wherein two piezoelectric ceramic piece upper and lower surfaces are coated with along the circumferential direction equally distributed electrode;
Mover assembly comprises the sliding band of circular arc, support wheel, first directive wheel, second directive wheel, the 3rd directive wheel and the 4th directive wheel, one drives the middle part that foot is bonded in circular arc metallic elastic body intrados, the first arc piezoelectric ceramic piece and the second arc piezoelectric ceramic piece stick on the external arc surface of circular arc metallic elastic respectively, and the complex that this three part is formed is built in the stator fixed mount.The pretightning force adjustment screw is threaded with the stator fixed mount, and with metallic elastic body middle part directly over contact.The sliding band of circular arc is clamped in the middle of support wheel and the stator module, and the single-driving foot of sliding band of circular arc and stator contacts; Support wheel be positioned at stator drive foot under.First directive wheel and second directive wheel are staggered relatively in the right side of stator module, the 3rd directive wheel and the 4th directive wheel are staggered relatively in the left side of stator module, the sliding band of circular arc places between first directive wheel and second directive wheel, between the 3rd directive wheel and the 4th directive wheel, and can horizontally slip.
The described first arc piezoelectric ceramic piece and the second arc piezoelectric ceramic piece stick on the exterior arc surface of circular arc metallic elastic body respectively by the place, both sides.
When the first arc piezoelectric ceramic piece is applied in driving frequency, inspire the corresponding resonance mode and the vibration shape of metallic elastic body, the driving foot end that is positioned at the middle part of circular arc metallic elastic body intrados produces elliptic motion.Be held on the sliding band of the circular arc that drives between foot and support wheel by frictional force drives and slide, and along by first directive wheel and second directive wheel, the direction of motion that the 3rd directive wheel and the 4th directive wheel are determined is to a direction motion.When the second arc piezoelectric ceramic piece is applied in driving frequency, drive sufficient end generation elliptic motion in opposite directions.Be held on the sliding band of the arc that drives between foot and support wheel by frictional force drives and slide, and along by first directive wheel and second directive wheel, another direction motion of the direction of motion that the 3rd directive wheel and the 4th directive wheel are determined.Thereby adjust the pretightning force adjusting screw(rod) and regulate the sliding precompression of being with and driving between the foot of circular arc, make ultrasound electric machine be operated in optimum state.
Compared with prior art, the present invention is by the energisation mode of the piezoelectric ceramic piece of control circular arc type curve ultrasonic electromotor, corresponding intrinsic vibration at inverse piezoelectric effect lower piezoelectric pottery vibrational excitation stator metallic elastic body, be with by frictional force drives circular arc mover is sliding by single-driving foot, along the reciprocal curvilinear motion of circumference; This ultrasound electric machine can realize the two-way curvilinear motion of circular arc mover band and need not mechanical steering gear, simple in structure, power output is big, speed is higher, efficient is higher.Be suitable for the occasion that workbench or other mechanisms directly do the two-way circular motion of short distance.
Description of drawings
Fig. 1 is an embodiment of the invention structural representation
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: 1 stator fixed mount, 2 first arc piezoelectric ceramic pieces, 3 pretightning force adjustment screw, 4 second arc piezoelectric ceramic pieces, 5 first directive wheels, 6 second directive wheels, the sliding band of 7 circular arcs, 8 support wheels, 9 drive foot, 10 metallic elastic bodies, 11 the 3rd directive wheels, 12 the 4th directive wheels.
Wherein said stator fixed mount 1, circular arc metallic elastic body 10, the first arc piezoelectric ceramic piece 2, the second arc piezoelectric ceramic piece 4, driving foot 9 and pretightning force adjustment screw 3 are formed stator modules, and wherein the upper and lower surface of the first arc piezoelectric ceramic piece 2, the second arc piezoelectric ceramic piece 4 is coated with along the circumferential direction equally distributed electrode;
Described circular arc cunning is with 7, support wheel 8, first directive wheel 5, second directive wheel 6, the 3rd directive wheel 11 and the 4th directive wheel 12 constitute mover assemblies.
The annexation of above-mentioned building block is: drive the middle part that foot 9 is bonded in metallic elastic body 10 intrados, the first arc piezoelectric ceramic piece 2 and the second arc piezoelectric ceramic piece 4 stick on the exterior arc surface of circular arc metallic elastic body 10 respectively by the place, both sides, and the complex that three parts are formed is built in the stator fixed mount 1.Pretightning force adjustment screw 3 is threaded with stator fixed mount 1, and with metallic elastic body 10 middle parts directly over contact.The circular arc cunning is with 7 to be clamped in support wheel 8 and to drive in the middle of the foot 9, and the circular arc cunning with 7 and the driving foot 9 of stator contact; Support wheel 8 be positioned at stator drive foot 9 under.First directive wheel 5 and second directive wheel 6 are staggered relatively in the right side of stator fixed mount 1, the 3rd directive wheel 11 and the 4th directive wheel 12 are staggered relatively in the left side of stator fixed mount 1, the circular arc cunning is with 7 to place 6 of first directive wheel 5 and second directive wheels, 12 of the 3rd directive wheel 11 and the 4th directive wheels, and can horizontally slip.
Described circular arc cunning is with 7, is the metal tape of circular arc or the arcuate zone that other similar nonmetallic materials are made.
The realization of the concrete work of present embodiment comprises following process:
When the first arc piezoelectric ceramic piece 2 is applied in driving frequency, inspire the corresponding resonance mode and the vibration shape of metallic elastic body 10, driving foot 9 ends that are positioned at the middle part of metallic elastic body 10 intrados produce elliptic motion.Be held on the circular arc cunning that drives 8 of foot 9 and support wheels by frictional force drives and be with 7 to slide, and move to a direction along the directions of motion of determining by first directive wheel 5 and second directive wheel, 6, the three directive wheels 11 and the 4th directive wheel 12.When the second arc piezoelectric ceramic piece 4 is applied in driving frequency, drive foot 9 ends generation elliptic motion in opposite directions.Be held on the circular arc cunning that drives 8 of foot 9 and support wheels by frictional force drives and be with 7 to slide, and along the directions of motion of determining by first directive wheel 5 and second directive wheel, 6, the three directive wheels 11 and the 4th directive wheel 12 to another direction motion.Thereby adjustment pretightning force adjusting screw(rod) 3 adjusting circular arc cunnings are with 7 and drive the precompression between 9 enough, make ultrasound electric machine be operated in optimum state.
As can be seen from the above-described embodiment, the energisation mode of the piezoelectric ceramic piece by control circular arc type curve ultrasonic electromotor, in the corresponding intrinsic vibration of inverse piezoelectric effect lower piezoelectric pottery vibrational excitation stator metallic elastic body, by drive foot by frictional force drives circular arc mover slide block along the reciprocal curvilinear motion of circumference; This ultrasound electric machine can be realized the two-way curvilinear motion of circular arc mover slide block and need not that mechanical steering gear, simple in structure, power output are big, speed can reach 200 mm/second.Be suitable for the occasion that workbench or other mechanisms directly do the two-way circular motion of short distance.
Claims (3)
1, a kind of single driving foot circle arc curve ultrasonic electromotor, constitute by stator module and mover assembly, it is characterized in that, described stator module comprises that stator fixed mount, circular arc metallic elastic body, the first arc piezoelectric ceramic piece, the second arc piezoelectric ceramic piece, one drive foot and pretightning force adjustment screw, and wherein two piezoelectric ceramic piece upper and lower surfaces are coated with along the circumferential direction equally distributed electrode; Described mover assembly comprises the sliding band of circular arc, support wheel, first directive wheel, second directive wheel, the 3rd directive wheel and the 4th directive wheel;
The annexation of above-mentioned parts is: one drives the middle part that foot is bonded in circular arc metallic elastic body intrados, the first arc piezoelectric ceramic piece and the second arc piezoelectric ceramic piece stick on the external arc surface of circular arc metallic elastic respectively, the complex that this three part is formed is built in the stator fixed mount, the pretightning force adjustment screw is threaded with the stator fixed mount, and with metallic elastic body middle part directly over contact, the sliding band of circular arc is clamped in the middle of support wheel and the stator module, and the single-driving foot of sliding band of circular arc and stator contacts, support wheel be positioned at drive foot under, first directive wheel and second directive wheel are staggered relatively in the right side of stator module, the 3rd directive wheel and the 4th directive wheel are staggered relatively in the left side of stator module, the sliding band of circular arc places between first directive wheel and second directive wheel, between the 3rd directive wheel and the 4th directive wheel, and can horizontally slip.
2, single driving foot circle arc curve ultrasonic electromotor according to claim 1 is characterized in that, the described first arc piezoelectric ceramic piece and the second arc piezoelectric ceramic piece stick on the exterior arc surface of circular arc metallic elastic body respectively by the place, both sides.
3, single driving foot circle arc curve ultrasonic electromotor according to claim 1, it is characterized in that, when the described first arc piezoelectric ceramic piece is applied in driving frequency, inspire the corresponding resonance mode and the vibration shape of metallic elastic body, the driving foot end that is positioned at the middle part of circular arc metallic elastic body intrados produces elliptic motion, when the second arc piezoelectric ceramic piece is applied in driving frequency, drive sufficient end generation elliptic motion in opposite directions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100370963A CN101267169B (en) | 2008-05-08 | 2008-05-08 | Single driving foot circle arc curve ultrasonic motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100370963A CN101267169B (en) | 2008-05-08 | 2008-05-08 | Single driving foot circle arc curve ultrasonic motor |
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| CN101267169A true CN101267169A (en) | 2008-09-17 |
| CN101267169B CN101267169B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100370963A Expired - Fee Related CN101267169B (en) | 2008-05-08 | 2008-05-08 | Single driving foot circle arc curve ultrasonic motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181071A (en) * | 2010-08-20 | 2013-06-26 | 阿斯普雷股份公司 | Piezo motor |
| CN109217718A (en) * | 2018-10-31 | 2019-01-15 | 大连交通大学 | Piezoelectric fabric drives micro- moving in rotation platform |
-
2008
- 2008-05-08 CN CN2008100370963A patent/CN101267169B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181071A (en) * | 2010-08-20 | 2013-06-26 | 阿斯普雷股份公司 | Piezo motor |
| US9118263B2 (en) | 2010-08-20 | 2015-08-25 | Aspre Ag | Piezo motor |
| CN103181071B (en) * | 2010-08-20 | 2016-08-03 | 阿斯普雷股份公司 | Piezo-electric motor |
| CN109217718A (en) * | 2018-10-31 | 2019-01-15 | 大连交通大学 | Piezoelectric fabric drives micro- moving in rotation platform |
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| Publication number | Publication date |
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| CN101267169B (en) | 2011-08-31 |
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