CN101262185A - Bending layer energy converter round disk stator and ultrasonic electromotor using this stator - Google Patents
Bending layer energy converter round disk stator and ultrasonic electromotor using this stator Download PDFInfo
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- CN101262185A CN101262185A CNA2008100644111A CN200810064411A CN101262185A CN 101262185 A CN101262185 A CN 101262185A CN A2008100644111 A CNA2008100644111 A CN A2008100644111A CN 200810064411 A CN200810064411 A CN 200810064411A CN 101262185 A CN101262185 A CN 101262185A
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Abstract
The invention discloses a flexural vibration sandwiched energy converter-typed round disc stator and an ultrasonic motor to which the stator is applied, and relates to the ultrasonic motor field. The invention solves the problem in the existing ultrasonic motor, that mechanical output capacity is restrained due to the adoption of elastic metal body stuck on piezoelectric ceramic pieces for excitation. Even flexural vibration sandwiched energy converters of the stator are symmetrically arrayed and fixed between a round disc at the upper end and a round disc at the lower end; both the front end cover and the back end cover of the sandwiched energy converter are a quadrangular with a rectangle cross section narrowing down gradually, the small end faces of the front end cover and the back end cover are fixedly connected with the upper round disc and the lower round disc; two pairs of piezoelectric ceramic pieces are respectively and fixed between the front end cover, the back end cover and the flange. A rotor with a shaft and a rotor without a shaft in the ultrasonic motor both take the shape of a round disc and are embedded respectively from the top and the bottom of a stator cylinder, a wearable cushion is fixed at the end face, contacting the round disc, of the rotor and the stator is fixed to a base through the flange on the energy converter. The flexural vibration sandwiched energy converter-typed round disc stator and the ultrasonic motor of the invention are applicable to the manufacturing field of the ultrasonic motors.
Description
Technical field
The present invention relates to a kind of bent-shaking sandwich energy converter type collar plate stator and use the ultrasound electric machine of this stator, belong to the piezoelectric ultrasonic motor technical field.
Background technology
Piezoelectric ultrasonic motor is a kind of inverse piezoelectric effect of utilizing piezoelectric ceramic, in elastomer, motivate the vibration in the supersonic range, form particle movement at surface of elastomer specified point or specific region with particular track, and then the microscopic motion of particle is converted to the macroscopic motion of rotor by the friction between stator, rotor coupling, have low speed high torque, need not gear, no electromagnetic interference, advantage such as response speed is fast and cut off self-lock, have very as a kind of piezoelectric actuator and to use widely.For the simplicity of exiting principle and the simplicity of theoretical analysis method, piezoelectric ultrasonic motor adopts the mode of metallic elastic body stickup piezoelectric ceramic thin sheet to encourage mostly at present, owing to be subjected to the d of piezoelectric ceramic
31Pattern mechanical-electric coupling efficient and ceramic material tensile strength are low, and the restriction of the intensity of glue-line and fatigue life etc., and such energisation mode makes the mechanical fan-out capability of ultrasound electric machine be subjected to serious restriction.
Summary of the invention
, to the invention provides a kind of bent-shaking sandwich energy converter type collar plate stator and use the ultrasound electric machine of this stator because the problem that the mechanical fan-out capability that adopts the mode of metallic elastic body stickup piezoelectric ceramic thin sheet to encourage to cause is restricted in order solving that existing ultrasound electric machine exists.
Bent-shaking sandwich energy converter type collar plate stator of the present invention is made up of last end disc, following end disc and even number bending vibration sandwich energy converter; Described even number bending vibration sandwich energy converter symmetry is fixed between end disc and the following end disc, and each bending vibration sandwich energy converter is made up of front end housing, rear end cap, insulating case, two pairs of piezoelectric ceramic pieces, flange, pre-mandrel and scale copper electrodes; Front end housing and rear end cap are that the cross section is rectangle and tapered four prisms cylinder, and the small end face of front end housing is fixedlyed connected with the lower surface of last end disc, and the small end face of rear end cap is fixedlyed connected with the upper surface of following end disc; Described longitudinal vibration transducer comprises four piezoelectric ceramic pieces, every piezoelectric ceramic piece symmetry is cut into left half sheet piezoelectric ceramic and right half sheet piezoelectric ceramic piece, each piezoelectric ceramic piece polarizes along thickness direction, left side half sheet piezoelectric ceramic piece in the every pair of piezoelectric ceramic piece is opposite with the polarised direction of right half sheet piezoelectric ceramic piece, the polarised direction of adjacent two left side half sheet piezoelectric ceramic pieces is opposite, and the polarised direction of adjacent two right side half sheet piezoelectric ceramic pieces is opposite; Between two piezoelectric ceramic pieces in described every pair of piezoelectric ceramic piece, between upper end piezoelectric ceramic piece and the flange and all be fixed with the scale copper electrode between lower end piezoelectric ceramic piece and the big end of rear end cap; Two pairs of piezoelectric ceramic pieces lay respectively at the both sides of flange, and the center of described flange is processed with square opening; Described pre-mandrel two ends are processed with first double-screw bolt and second double-screw bolt respectively, and the hand of spiral of first double-screw bolt and second double-screw bolt is opposite, and the middle shaft part cross section of pre-mandrel is square; Pre-mandrel is installed in the inside center of bending vibration sandwich energy converter.Two pairs of piezoelectric ceramic pieces, flange and scale copper electrodes first double-screw bolt and the big end of the big end of second double-screw bolt and front end housing and rear end cap by pre-mandrel and pre-mandrel two ends is fastenedly connected and is one, and pre-mandrel is connected the employing matched in clearance with flange; Between every piezoelectric ceramic piece, scale copper electrode and first double-screw bolt, second double-screw bolt, be fixed with insulating case.
Use the ultrasound electric machine of bent-shaking sandwich energy converter type collar plate stator, it is made up of stator, rotor assembly and terminal outer cover, middle outer cover, front end pedestal, first set screws, second set screws, the 3rd set screws, bearing, pretension packing ring, the 4th set screws and end cap; Stator module and rotor assembly are rotationally connected by bearing and the front end pedestal that is installed on the front end pedestal; Stator module is fixed on the front end pedestal by the lower surface flange and first set screws, the two ends of middle outer cover are fixed on lower surface flange and the upper surface flange by first set screws and second set screws respectively, and terminal outer cover is fixed on the flange of upper surface by the 3rd set screws; Bearing is realized pretension by pretension packing ring, end cap and the 4th set screws; Described rotor assembly is made up of tape spool rotor, a nothing axle rotor, linking bond, wear-resisting lining ring, rubber blanket, disk spring and locking nut; Described nothing axle rotor is fixed on the moment output shaft of tape spool rotor by linking bond; Tape spool rotor and do not have the upper surface of end disc on axle rotor and the bent-shaking sandwich energy converter type collar plate stator and the contacted end face in lower surface of play end disc is fixed with wear-resisting lining ring respectively, employing rubber blanket, disk spring and locking nut realization tape spool rotor and do not have the pretension of a rotor below not having a rotor.
Bent-shaking sandwich energy converter type collar plate stator provided by the invention, when disk is operated in n rank bending vibration modes (wherein n is a natural number), the contained bending vibration transducer number of bent-shaking sandwich energy converter type collar plate stator provided by the invention mostly is 4n most, the angle theta between any two bending vibration transducer distributing positions
1Satisfy: θ
1=90 ° * m/n, wherein m ∈ 1,2 ..., 4n-1}, all bending vibration transducers are divided into two groups and encourage, the angle theta between any on the same group two bending vibration transducer distributing positions
2Satisfy: θ
2=180 ° * m/n, wherein m ∈ 1 ..., 2n-1}, output torque that can be according to actual needs and size restrictions be the exponent number and the transducer number of selector disc stator bending vibration modes flexibly.Utilize the extensional vibration of piezoelectric ceramic piece in sandwich converter, to motivate flexural vibrations, by the control input signal, realize that two groups of transducers are motivating the bending vibration modes response that two amplitudes are equal, all differ pi/2 on time and space on the last end disc, two bending vibration modes responses are superimposed upon and form the row ripple on the end disc; Be implemented in down simultaneously and motivate two amplitudes equate, all differ pi/2 on time and space bending vibration modes response on the end disc, two bending vibration modes responses are superimposed upon down and also form the row ripple on the end disc; Capable ripple on the last end disc is identical with capable ripple direction on the following end disc; Behind excitation trip ripple, stator driving gear surface particle produces elliptical trajectory, and then realizes the macroscopic motion output of rotor by the coupling of the friction between stator driving gear and the rotor.The present invention realizes curved natural frequency and the curved degeneracy that shakes between the natural frequency of disk of shaking of transducer by area ratio, both sides, front/rear end cap square-section ratio, front/rear end cap length, disk internal diameter size and the disk outside dimension of adjusting two end faces of front/rear end cap.Piezo ceramic element adopts sandwich structure, adopts the d of the high mechanical-electric coupling efficient of piezoelectric ceramic
33Pattern work solves the problem of pasting low, the mechanical fan-out capability difference of piezoelectric ceramic chip piezoelectric ultrasonic motor mechanical-electric coupling efficient.The transducer front end housing links to each other with last end disc, and the transducer rear end cap links to each other with following end disc, has made full use of the flexural vibrations that transducer produces, and has improved stator efficient.Integrated configuration by front end housing and last end disc and rear end cap and following end disc, simplify the structure, improved the controllability of disk surface of elastomer particle vibration track, eliminated and adopt alternate manner connection transducer and disk stator vibration waveform adverse effect.Front end housing and rear end cap adopt the variable cross-section design to play the effect of amassing wealth by heavy taxation of vibrational energy, can improve the amplitude and the vibration velocity of driving gear surface particle, make motor performance be improved.
Use bent-shaking sandwich energy converter type collar plate stator ultrasound electric machine provided by the invention is by motivating the identical capable ripple of direction on last end disc and following end disc, stator driving gear surface particle produces elliptical trajectory, by tape spool rotor and last end disc driving gear and do not have a rotor and following end disc driving gear between friction coupling realize the macroscopic motion output of rotor assembly, because having two disks participates in can increasing exponentially the motor output torque to moving simultaneously; Rotor surface is bonding wear-resisting lining ring, wear-resisting lining ring adopts the conical surface to contact with stator tooth, has increased contact area, can improve the motor output torque, increases the service life, and effectively eliminates noise; By two location that the stator tooth conical surface has been realized rotor assembly up and down; By the location that the bearing that is installed on the pedestal is realized stator module and rotor assembly, reduce the influence of radial load to the motor output characteristic.
But that stator provided by the invention and ultrasound electric machine have is simple in structure, flexible design, mechanical-electric coupling efficient height, can realize big moment output, stable performance, be easy to control the advantage of producing in serial form.
Description of drawings
Longitudinal section when the ultrasound electric machine of the use bent-shaking sandwich energy converter type collar plate stator that Fig. 1 proposes for the present invention comprises 4 bending vibration transducers; Fig. 2 is the A-A cutaway view of Fig. 1; Front view when the bent-shaking sandwich energy converter type collar plate stator that Fig. 3 proposes for the present invention comprises 4 bending vibration transducers; Front view when the ultrasound electric machine of the use bent-shaking sandwich energy converter type collar plate stator that Fig. 4 proposes for the present invention comprises 4 bending vibration transducers; Fig. 5 is the piezoelectric ceramic piece polarised direction schematic diagram in four bending vibration sandwich energy converters among Fig. 1; Fig. 6～Fig. 9 is that bent-shaking sandwich energy converter type collar plate stator shown in Figure 3 adopts at two groups of sandwich converters that amplitudes equate, frequency is the curved resonance frequency of shaking of transducer self when comprising 4 bending vibration transducers, phase difference changes schematic diagram (that is: V for the vibration shape in+90 ° next complete vibration period of ac voltage signal excitation situation
1=Acos (2 π t/T), V
2=Asin (2 π t/T), V
0=0, V
1Be the voltage excitation signals of first group of sandwich converter, V
2Be the voltage excitation signals of second group of sandwich converter, A is the driving voltage signal amplitude, and T is the driving voltage signal period, and t is the time), this figure is stator circumferentially deploying figure, is the vibration shape variation schematic diagram of stator nine rank bending vibration modes; Fig. 6 is t=nT (n=0,1,2...) Shi Ke a stator vibration shape schematic diagram; Fig. 7 is t=(n+1/4) T (n=0,1,2...) Shi Ke a stator vibration shape schematic diagram; Fig. 8 is t=(n+1/2) T (n=0,1,2...) Shi Ke a stator vibration shape schematic diagram; Fig. 9 is t=(n+3/4) T (n=0,1,2...) Shi Ke a stator vibration shape schematic diagram.
Embodiment
Embodiment one: present embodiment bent-shaking sandwich energy converter type collar plate stator, form by last end disc 1-1-1, following end disc 1-7-1 and even number bending vibration sandwich energy converter 1-8; Described even number bending vibration sandwich energy converter 1-8 symmetry is fixed between end disc 1-1-1 and the following end disc 1-7-1, and each bending vibration sandwich energy converter 1-8 is made up of front end housing 1-1-4, rear end cap 1-7-4, insulating case 1-2, two couples of piezoelectric ceramic piece 1-3, flange 1-4, pre-mandrel 1-5 and scale copper electrode 1-6; Front end housing 1-1-4 and rear end cap 1-7-4 are that the cross section is rectangle and tapered four prisms cylinder, the small end face of front end housing 1-1-4 is fixedlyed connected with the lower surface of last end disc 1-1-1, and the small end face of rear end cap 1-7-4 is fixedlyed connected with the upper surface of following end disc 1-7-1; Described longitudinal vibration transducer 1-8 comprises four piezoelectric ceramic piece 1-3, every piezoelectric ceramic piece 1-3 symmetry is cut into left half sheet piezoelectric ceramic piece 1-3-1 and right half sheet piezoelectric ceramic piece 1-3-2, each piezoelectric ceramic piece 1-3 polarizes along thickness direction, left side half sheet piezoelectric ceramic piece 1-3-1 among the every couple of piezoelectric ceramic piece 1-3 is opposite with the polarised direction of right half sheet piezoelectric ceramic piece 1-3-2, the polarised direction of adjacent two left sides, half sheet piezoelectric ceramic piece 1-3-1 is opposite, and the polarised direction of adjacent two right sides, half sheet piezoelectric ceramic piece 1-3-2 is opposite; Between two piezoelectric ceramic piece 1-3 among described every couple of piezoelectric ceramic piece 1-3, between upper end piezoelectric ceramic piece 1-3 and the flange 1-4 and all be fixed with scale copper electrode 1-6 between lower end piezoelectric ceramic piece 1-3 and the big end of rear end cap 1-7-4; Two couples of piezoelectric ceramic piece 1-3 lay respectively at the both sides of flange 1-4, and the center of described flange 1-4 is processed with square opening; Described pre-mandrel 1-5 two ends are processed with the first double-screw bolt 1-5-1 and the second double-screw bolt 1-5-2 respectively, and the hand of spiral of the first double-screw bolt 1-5-1 and the second double-screw bolt 1-5-2 is opposite, and the middle shaft part cross section of pre-mandrel 1-5 is square; Pre-mandrel 1-5 is installed in the inside center of bending vibration sandwich energy converter 1-8.Two couples of piezoelectric ceramic piece 1-3, flange 1-4 and the scale copper electrode 1-6 first double-screw bolt 1-5-1 and the big end of the big end of the second double-screw bolt 1-5-2 and front end housing 1-1-4 and rear end cap 1-7-4 by pre-mandrel 1-5 and pre-mandrel 1-5 two ends is fastenedly connected and is one, and pre-mandrel 1-5 is connected the employing matched in clearance with flange 1-4; Between every piezoelectric ceramic piece 1-3, scale copper electrode 1-6 and the first double-screw bolt 1-5-1, the second double-screw bolt 1-5-2, be fixed with insulating case 1-2.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, be the structural representation that has the bent-shaking sandwich energy converter type collar plate stator of four transducers.
The operation principle of the described bent-shaking sandwich energy converter type collar plate stator of present embodiment is: bent-shaking sandwich energy converter type collar plate stator provided by the invention adopts the flexural vibrations that realize bending vibration sandwich energy converter along the piezoelectric ceramic piece of thickness direction polarization.Realize curved natural frequency and the curved degeneracy that shakes between the natural frequency of disk of shaking of bending vibration sandwich energy converter by area ratio, both sides, front/rear end cap square-section ratio, front/rear end cap length, disk internal diameter size and the disk outside dimension of adjusting two end faces of front/rear end cap.Front end housing and rear end cap adopt the variable cross-section design to play the effect of amassing wealth by heavy taxation of vibrational energy, can improve the amplitude and the vibration velocity of driving gear surface particle, make motor performance be improved.Bending vibration sandwich energy converter adopts with the alternating voltage of self bending the resonance frequency same frequency that shakes and encourages, all bending vibration sandwich energy converters are divided into two groups and encourage, as Fig. 6～shown in Figure 9, two groups of bending vibration sandwich energy converters adopt that amplitude equates, frequency is the curved resonance frequency of shaking of transducer self, phase difference is during for+90 ° ac voltage signal excitation, utilize the extensional vibration of piezoelectric ceramic piece to motivate flexural vibrations in sandwich converter; And then be implemented in and motivate two amplitudes equate, all differ pi/2 on time and space bending vibration modes response on the end disc, two bending vibration modes responses are superimposed upon to form on the end disc goes ripple; Be implemented in down simultaneously and motivate two amplitudes equate, all differ pi/2 on time and space bending vibration modes response on the end disc, two bending vibration modes responses are superimposed upon down and also form the row ripple on the end disc; Capable ripple on the last end disc is identical with capable ripple direction on the following end disc; Behind excitation trip ripple, stator driving gear surface particle produces elliptical trajectory, and then realizes the macroscopic motion output of rotor by the coupling of the friction between stator driving gear and the rotor; If adjusting the phase difference of excitation signals is-90 °, can change capable wave line of propagation, finally realize the rotor counter motion.Use bent-shaking sandwich energy converter type collar plate stator ultrasound electric machine provided by the invention participates in actuating simultaneously owing to have two disks, can increase exponentially the motor output torque; Rotor surface is bonding wear-resisting lining ring, wear-resisting lining ring adopts the conical surface to contact with stator tooth, has increased contact area, can improve the motor output torque, increases the service life, and effectively eliminates noise.
Embodiment two: in conjunction with Fig. 2, Fig. 3 present embodiment is described, present embodiment is that with embodiment one difference described front end housing 1-1-4 adopts a block of metal materials processing to become end cap/disk integral piece respectively with last end disc 1-1-1, rear end cap 1-7-4 and following end disc 1-7-1.Other composition is identical with embodiment one with connected mode.This processing mode can play the purpose that reduces energy loss, helps improving the controllability of driving gear surface particle vibration track.
Embodiment three: present embodiment is described in conjunction with Fig. 3, present embodiment and embodiment one difference are that the upper surface of the described end disc 1-1-1 of going up and the lower surface of following end disc 1-7-1 are processed with continuous pectination driving gear respectively, on the continuous pectination driving gear of last end disc 1-1-1 upper surface, be processed with upper end conical surface 1-1-5, be processed with upper surface thin-walled ring 1-1-2 and upper surface flange 1-1-3 in the outside of last end disc 1-1-1 respectively; On the continuous pectination driving gear of following end disc 1-7-1 lower surface, be processed with lower end conical surface 1-7-5, be processed with lower surface thin-walled ring 1-7-2 and lower surface flange 1-7-3 respectively in the outside of following end disc 1-7-1.Other composition is identical with embodiment one with connected mode.The continuous pectination driving gear that present embodiment increases helps amplifying stator surface particle vibration trajectory amplitudes, and upper end conical surface 1-1-5 and lower end conical surface 1-7-5 help increasing the contact area between stator and the rotor, improves output torque.Upper surface thin-walled ring 1-1-2 and lower surface thin-walled ring 1-7-2 can realize that resiliency supported and vibration isolate, and drop to the influence degree that is connected the flexural vibration mode of last end disc 1-1-1 and following end disc 1-7-1 between stator module and the external member minimum.
Embodiment four: in conjunction with Fig. 1, Fig. 2 and Fig. 4 present embodiment is described, present embodiment and embodiment one difference are that the cross section of described piezoelectric ceramic piece 1-3 and flange 1-4 is rectangle.Other composition is identical with embodiment one with connected mode.Flange 1-4 in the present embodiment, the shape of piezoelectric ceramic piece 1-3 can simplified processing process.
Embodiment five: present embodiment is described in conjunction with Fig. 1, Fig. 4, present embodiment is used the ultrasound electric machine of bent-shaking sandwich energy converter type collar plate stator, and it is made up of stator, rotor assembly and terminal outer cover 3, middle outer cover 4, front end pedestal 5, first set screws 6, second set screws 7, the 3rd set screws 8, bearing 9, pretension packing ring 10, the 4th set screws 11 and end cap 12; Stator module and rotor assembly are rotationally connected with front end pedestal 5 by the bearing 9 that is installed on the front end pedestal 5; Stator module is fixed on the front end pedestal 5 by the lower surface flange 1-7-3 and first set screws 6, the two ends of middle outer cover 4 are fixed on lower surface flange 1-7-3 and the upper surface flange 1-1-3 by first set screws 6 and second set screws 7 respectively, and terminal outer cover 3 is fixed on the flange 1-1-3 of upper surface by the 3rd set screws 8; Bearing 9 is realized pretension by pretension packing ring 10, end cap 12 and the 4th set screws 11; Described rotor assembly is made up of tape spool rotor 2-1, nothing axle rotor 2-2, a linking bond 2-3, wear-resisting lining ring 2-4, rubber blanket 2-5, disk spring 2-6 and locking nut 2-7; Described nothing axle rotor 2-2 is fixed on the moment output shaft 2-1-3 of tape spool rotor 2-1 by linking bond 2-3; Tape spool rotor 2-1 is fixed with wear-resisting lining ring 2-4 respectively with the contacted end face in lower surface of the upper surface of not having end disc 1-1-1 on axle rotor 2-2 and the bent-shaking sandwich energy converter type collar plate stator and following end disc 1-7-1, and employing rubber blanket 2-5, disk spring 2-6 and locking nut 2-7 do not realize tape spool rotor 2-1 and do not have the pretension of rotor 2-2 below having a rotor 2-2.
Embodiment six: present embodiment is described in conjunction with Fig. 1, present embodiment and embodiment five differences are that described wear-resisting lining ring 2-4 adopts Polymer Friction Materials, and are separately fixed at the lower surface of tape spool rotor 2-1 and do not have on the upper surface of axle rotor 2-2 by the mode of pasting.Other composition is identical with embodiment five with connected mode.
Embodiment seven: in conjunction with Fig. 1 present embodiment is described, the upper surface that present embodiment and embodiment five differences are the lower surface of described tape spool rotor 2-1 and do not have the axle rotor 2-2 tapering with upper end conical surface 1-1-5, the lower end conical surface 1-7-5 of the upper and lower end disk pectination driving gear of bent-shaking sandwich energy converter type collar plate stator respectively is identical.Other composition is identical with embodiment five with connected mode.Realize the location of rotor assembly and increased contact area by cone match.
Embodiment eight: in conjunction with Fig. 1, Fig. 4 present embodiment is described, present embodiment and embodiment five differences are that described tape spool rotor 2-1 is processed with upper end keyway 2-1-1 and lower end keyway 2-1-2 respectively in two ends up and down.Other composition is identical with embodiment five with connected mode.Upper end keyway 2-1-1 is used to connect detecting element; Lower end keyway 2-1-2 is used to realize power output.
Embodiment nine: in conjunction with Fig. 1 present embodiment is described, present embodiment and embodiment five differences are that the outside of described front end pedestal 5 lower surfaces is processed with screwed hole 5-1.Other composition is identical with embodiment five with connected mode.Screwed hole 5-1 is used for realizing the installation of motor in mechanical system.
Claims (9)
1, bent-shaking sandwich energy converter type collar plate stator, it is made up of last end disc (1-1-1), following end disc (1-7-1) and even number bending vibration sandwich energy converter (1-8); Described even number bending vibration sandwich energy converter (1-8) symmetry is fixed between end disc (1-1-1) and the following end disc (1-7-1), it is characterized in that each bending vibration sandwich energy converter (1-8) is made up of front end housing (1-1-4), rear end cap (1-7-4), insulating case (1-2), two pairs of piezoelectric ceramic pieces (1-3), flange (1-4), pre-mandrel (1-5) and scale copper electrode (1-6); Front end housing (1-1-4) and rear end cap (1-7-4) are that the cross section is rectangle and tapered four prisms cylinder, the small end face of front end housing (1-1-4) is fixedlyed connected with the lower surface of last end disc (1-1-1), and the small end face of rear end cap (1-7-4) is fixedlyed connected with the upper surface of following end disc (1-7-1); Described bending vibration sandwich energy converter (1-8) comprises four piezoelectric ceramic pieces (1-3), every piezoelectric ceramic piece (1-3) symmetry is cut into left half sheet piezoelectric ceramic piece (1-3-1) and right half sheet piezoelectric ceramic piece (1-3-2), each piezoelectric ceramic piece (1-3) polarizes along thickness direction, left side half sheet piezoelectric ceramic piece (1-3-1) in every pair of piezoelectric ceramic piece (1-3) is opposite with the polarised direction of right half sheet piezoelectric ceramic piece (1-3-2), the polarised direction of adjacent two left sides half sheet piezoelectric ceramic piece (1-3-1) is opposite, and the polarised direction of adjacent two right sides half sheet piezoelectric ceramic piece (1-3-2) is opposite; All be fixed with scale copper electrode (1-6) between two piezoelectric ceramic pieces (1-3) in described every pair of piezoelectric ceramic piece (1-3), between upper end piezoelectric ceramic piece (1-3) and the flange (1-4) and between lower end piezoelectric ceramic piece (1-3) and the big end of rear end cap (1-7-4); Two pairs of piezoelectric ceramic pieces (1-3) lay respectively at the both sides of flange (1-4), and the center of described flange (1-4) is processed with square opening; Described pre-mandrel (1-5) two ends are processed with first double-screw bolt (1-5-1) and second double-screw bolt (1-5-2) respectively, and the hand of spiral of first double-screw bolt (1-5-1) and second double-screw bolt (1-5-2) is opposite, and the middle shaft part cross section of pre-mandrel (1-5) is square; Pre-mandrel (1-5) is installed in the inside center of bending vibration sandwich energy converter (1-8); Two pairs of piezoelectric ceramic pieces (1-3), flange (1-4) and scale copper electrode (1-6) first double-screw bolt (1-5-1) and the big end of the big end of second double-screw bolt (1-5-2) and front end housing (1-1-4) and rear end cap (1-7-4) by pre-mandrel (1-5) and pre-mandrel (1-5) two ends is fastenedly connected and is one, and pre-mandrel (1-5) is connected the employing matched in clearance with flange (1-4); Between every piezoelectric ceramic piece (1-3), scale copper electrode (1-6) and first double-screw bolt (1-5-1), second double-screw bolt (1-5-2), be fixed with insulating case (1-2).
2, bent-shaking sandwich energy converter type collar plate stator according to claim 1 is characterized in that described front end housing (1-1-4) adopts a block of metal materials processing to become end cap/disk integral piece respectively with last end disc (1-1-1), rear end cap (1-7-4) and following end disc (1-7-1).
3, bent-shaking sandwich energy converter type collar plate stator according to claim 1, it is characterized in that the upper surface of described upward end disc (1-1-1) and the lower surface of following end disc (1-7-1) are processed with continuous pectination driving gear respectively, on the continuous pectination driving gear of last end disc (1-1-1) upper surface, be processed with the upper end conical surface (1-1-5), be processed with upper surface thin-walled ring (1-1-2) and upper surface flange (1-1-3) in the outside of last end disc (1-1-1) respectively; On the continuous pectination driving gear of following end disc (1-7-1) lower surface, be processed with the lower end conical surface (1-7-5), be processed with lower surface thin-walled ring (1-7-2) and lower surface flange (1-7-3) respectively in the outside of following end disc (1-7-1).
4, bent-shaking sandwich energy converter type collar plate stator according to claim 1 is characterized in that the described piezoelectric ceramic piece (1-3) and the cross section of flange (1-4) are rectangle.
5, use the ultrasound electric machine of bent-shaking sandwich energy converter type collar plate stator, it is made up of stator, rotor assembly and terminal outer cover (3), middle outer cover (4), front end pedestal (5), first set screws (6), second set screws (7), the 3rd set screws (8), bearing (9), pretension packing ring (10), the 4th set screws (11) and end cap (12); Stator module and rotor assembly are rotationally connected with front end pedestal (5) by the bearing (9) that is installed on the front end pedestal (5); Stator module is fixed on the front end pedestal (5) by lower surface flange (1-7-3) and first set screws (6), the two ends of middle outer cover (4) are fixed on lower surface flange (1-7-3) and the upper surface flange (1-1-3) by first set screws (6) and second set screws (7) respectively, and terminal outer cover (3) is fixed on the upper surface flange (1-1-3) by the 3rd set screws (8); Bearing (9) is realized pretension by pretension packing ring (10), end cap (12) and the 4th set screws (11); It is characterized in that described rotor assembly by tape spool rotor (2-1), do not have an axle rotor (2-2), linking bond (2-3), wear-resisting lining ring (2-4), rubber blanket (2-5), disk spring (2-6) and locking nut (2-7) and form; Described nothing axle rotor (2-2) is fixed on the moment output shaft (2-1-3) of tape spool rotor (2-1) by linking bond (2-3); The upper surface of end disc (1-1-1) and the contacted end face in lower surface of following end disc (1-7-1) are fixed with wear-resisting lining ring (2-4) respectively on tape spool rotor (2-1) and nothing axle rotor (2-2) and the bent-shaking sandwich energy converter type collar plate stator, and employing rubber blanket (2-5), disk spring (2-6) and locking nut (2-7) are not realized the pretension of tape spool rotor (2-1) and nothing axle rotor (2-2) below having a rotor (2-2).
6, the ultrasound electric machine of use bent-shaking sandwich energy converter type collar plate stator according to claim 5, it is characterized in that described wear-resisting lining ring (2-4) adopts Polymer Friction Materials, and be separately fixed at the lower surface of tape spool rotor (2-1) and do not have on the upper surface of axle rotor (2-2) by the mode of pasting.
7, the ultrasound electric machine of use bent-shaking sandwich energy converter type collar plate stator according to claim 5, the upper surface that it is characterized in that the lower surface of described tape spool rotor (2-1) and do not have an axle rotor (2-2) tapering with the upper end conical surface (1-1-5) of the upper and lower end disk pectination driving gear of bent-shaking sandwich energy converter type collar plate stator, the lower end conical surface (1-7-5) respectively are identical.
8, the ultrasound electric machine of use bent-shaking sandwich energy converter type collar plate stator according to claim 5 is characterized in that described tape spool rotor (2-1) is processed with upper end keyway (2-1-1) and lower end keyway (2-1-2) respectively in two ends up and down.
9, the ultrasound electric machine of use bent-shaking sandwich energy converter type collar plate stator according to claim 5 is characterized in that the outside of described front end pedestal (5) lower surface is processed with screwed hole (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100644111A CN101262185B (en) | 2008-04-29 | 2008-04-29 | Bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
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| CN2008100644111A CN101262185B (en) | 2008-04-29 | 2008-04-29 | Bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
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| CN101262185B CN101262185B (en) | 2010-11-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751905A (en) * | 2012-06-25 | 2012-10-24 | 南京航空航天大学 | Novel double-tooth-surface rotary ultrasonic motor stator and excitation way thereof |
| CN106338548A (en) * | 2016-11-11 | 2017-01-18 | 福建工程学院 | Ultrasonic motor stator piezoelectric ceramic pasting detection device and method |
| CN107070295A (en) * | 2017-04-14 | 2017-08-18 | 哈尔滨工业大学 | U-shaped accurate linear piezoelectric actuator and its motivational techniques |
| CN108880319A (en) * | 2018-04-28 | 2018-11-23 | 淮海工学院 | Indulge curved composite vibrational mode increasing material manufacturing ultrasonic vibrator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2874762B2 (en) * | 1989-06-05 | 1999-03-24 | キヤノン株式会社 | Motor drive |
| CN100514833C (en) * | 2007-03-20 | 2009-07-15 | 哈尔滨工业大学 | Sandwich transducer type longitudinal and bending linear ultrasound motor with frequency-modulating variable-amplitude rod |
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2008
- 2008-04-29 CN CN2008100644111A patent/CN101262185B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751905A (en) * | 2012-06-25 | 2012-10-24 | 南京航空航天大学 | Novel double-tooth-surface rotary ultrasonic motor stator and excitation way thereof |
| CN102751905B (en) * | 2012-06-25 | 2015-05-20 | 南京航空航天大学 | Novel double-tooth-surface rotary ultrasonic motor stator and excitation way thereof |
| CN106338548A (en) * | 2016-11-11 | 2017-01-18 | 福建工程学院 | Ultrasonic motor stator piezoelectric ceramic pasting detection device and method |
| CN106338548B (en) * | 2016-11-11 | 2023-05-12 | 福建工程学院 | Ultrasonic motor stator piezoelectric ceramic paste detection device and detection method thereof |
| CN107070295A (en) * | 2017-04-14 | 2017-08-18 | 哈尔滨工业大学 | U-shaped accurate linear piezoelectric actuator and its motivational techniques |
| CN107070295B (en) * | 2017-04-14 | 2018-11-02 | 哈尔滨工业大学 | U-shaped precision linear piezoelectric actuator and its motivational techniques |
| CN108880319A (en) * | 2018-04-28 | 2018-11-23 | 淮海工学院 | Indulge curved composite vibrational mode increasing material manufacturing ultrasonic vibrator |
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| CN101262185B (en) | 2010-11-17 |
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