CN101728972B - Clamping and positioning device of K-shaped linear ultrasonic motor based on continuous amplitude transformer principle - Google Patents
Clamping and positioning device of K-shaped linear ultrasonic motor based on continuous amplitude transformer principle Download PDFInfo
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- CN101728972B CN101728972B CN2010100183432A CN201010018343A CN101728972B CN 101728972 B CN101728972 B CN 101728972B CN 2010100183432 A CN2010100183432 A CN 2010100183432A CN 201010018343 A CN201010018343 A CN 201010018343A CN 101728972 B CN101728972 B CN 101728972B
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Abstract
The invention relates to a clamping and positioning device of a K-shaped linear ultrasonic motor based on the continuous amplitude transformer principle, belonging to the technical field of ultrasonic motors. The clamping and positioning device comprises an opening outline border (6) and a supporter. On one hand, the device ensures that a stator can not move on the motion direction of a motor guide rail and can not rotate on three directions, thus improving the stability of motor structure, ensuring the stability of stator movement and improving load capacity and operation efficiency; and on the other hand, the device can adjust prestress between the stator and a rotor, which is convenient to measure the prestress and ensures that prestress applied in the installation process satisfies design requirements.
Description
Technical field:
The present invention is a kind of clamping and positioning device of the K shape linear ultrasonic motor based on continuous amplitude transformer principle, belongs to the ultrasound electric machine technical field.
Background technology:
Linear ultrasonic motor is a kind of novel electrical micro-machine that develops rapidly and use the eighties in 20th century; It utilizes the inverse piezoelectric effect and the elastomeric ultrasonic vibration of piezoelectric element; And through the rubbing action between stator and the mover; The macroscopical straight line (rotation) that converts elastomeric micro breadth oscillation to mover moves, and directly promotes load.It has compact conformation, low-speed big, response is fast, positioning accuracy is high and advantage such as Electro Magnetic Compatibility.Have a wide range of applications in Aero-Space, weaponry and accurate driving field.
The research and development of present domestic linear ultrasonic motor is very fast, and colleges and universities such as Tsing-Hua University, Nanjing Aero-Space University, Harbin Institute of Technology have successively launched research to linear ultrasonic motor.Online at Chinese patent, published annular standing wave linear ultrasonic motor [200510046044.9], prism longitudinal bend composite vibrator linear supersonic motor [200610132316.1], triangle bended plate type piezoelectric straight line ultrasound electric motor [200710045921.X], H shape standing wave linear ultrasonic motor oscillator [200820014739.8] etc. successively since 2004.Closely in recent years, Nanjing Aero-Space University succeeded in developing column structure dual-wheel foot driving linear ultrasonic motor and electric excitation method thereof [200710020963.8], based on K shape linear ultrasonic motor [200810124426.2] of continuous amplitude transformer principle etc.But existing ultrasound electric machine still has deficiencies such as power output is little, efficient is low, the life-span is short.Through consulting some linear ultrasonic motor (as: Zhang Tiemin; Liang Li; The national inventing patent of Liang Li's English " double-cylinder vibrator linear ultrasonic motor ", application number: 200610132315.7) though prepressing device is arranged, like preloading spring and pretension screw, the effect of not measuring precompression.And be provided with incorrectly, can produce and unnecessary move and rotate.Linear ultrasonic motor (as: the Zhao Chunsheng that also has; The national inventing patent of Xu Hai " small linear ultrasonic motor ", application number: 200510037644.9) be provided with the device of measuring precompression, but the pretension function is good inadequately, and can rotates, so can cause the precompressed force measurement not accurate enough.
The clamping of ultrasound electric machine, location are to influence the delivery efficiency of linear ultrasonic motor and the key factor of stability.Linear ultrasonic motor mainly applies precompression through structure as shown in Figure 4 at present.This clamping device; Its slide rail that connects base plate and holder is arranged on the line of symmetry of stator; Though guaranteed that stator can not move on the direction of motion of motor slide rails, can't limit the rotation of stator on three directions, can not guarantee the stability of stator movement; And then having reduced load capacity, operational efficiency is not high.
Summary of the invention:
The object of the present invention is to provide a kind of clamping and positioning device of the K shape linear ultrasonic motor based on continuous amplitude transformer principle.It can guarantee that stator not moving on the direction of motion of motor slide rails and on three directions, can not rotating, promptly improves the stability of electric machine structure on the one hand, guarantees the stability of stator movement, improves load capacity and operational efficiency; It can regulate the precompression between stator and mover on the other hand, and is convenient to measure the size of precompression, guarantees that simultaneously the precompression that in installation process, applies meets design requirement.
First kind of clamping and positioning device based on the K shape linear ultrasonic motor of continuous amplitude transformer principle; The clamping location that is used for the V-arrangement stator; This V-arrangement stator has two oscillators; Each oscillator is made up of front end housing, piezoelectric ceramic piece group, rear end cap, is characterised in that: clamping and positioning device comprises opening housing and supporter; Above-mentioned opening housing is successively by first frame, second frame, and the 3rd frame, the 4th frame is formed, and first wherein parallel with the mover guide rail frame is provided with opening; Above-mentioned supporter has two and is installed between the two adjacent piezoelectric ceramic piece groups of corresponding oscillator with vertical each supporting arm of supporting arm of V-arrangement stator two oscillators, and is fixed together through pretension bolt respectively; V-arrangement stator integral body is installed on opening rectangle housing inside through supporter, and the driving of V-arrangement stator foot is positioned at the first frame opening part; Second frame of above-mentioned opening housing and the 4th frame are equipped with the boss parallel with first frame, through between the above-mentioned boss and first frame cylinder rail being installed; Every supporting arm end of above-mentioned supporter all has the arm tail parallel with first frame, and the arm tail has manhole, is installed on the cylinder rail through manhole, and stator can only be moved along stator symmetry axis direction; Between above-mentioned boss and arm tail, also be provided with holddown spring.Through changing the position of opening rectangle housing, realize adjusting to the holddown spring stroke, accomplish control to the motor precompression.
Above-mentioned opening housing also has the dog screw that cooperates with supporter.Dog screw be used to control opening rectangle housing relatively with the position of mover guide rail, realization is to the control of motor precompression.
Second kind of clamping and positioning device based on the K shape linear ultrasonic motor of continuous amplitude transformer principle; The clamping location that is used for the V-arrangement stator; This V-arrangement stator has two oscillators; Each oscillator is made up of front end housing, piezoelectric ceramic piece group, rear end cap, is characterised in that: clamping and positioning device comprises opening housing and supporter; Above-mentioned opening housing is successively by first frame, second frame, and the 3rd frame, the 4th frame is formed, and first wherein parallel with the mover guide rail frame is provided with opening; Above-mentioned supporter have two respectively with the vertical supporting arm of V-arrangement stator two oscillators, each supporting arm is installed between the two adjacent piezoelectric ceramic piece groups of corresponding oscillator, and is fixed together through pretension bolt; V-arrangement stator integral body is installed on opening rectangle housing inside through supporter, and the driving of V-arrangement stator foot is positioned at the first frame opening part; Second frame of above-mentioned opening housing and the 4th frame are provided with and the parallel guide rail of stator symmetry axis direction; Two supporting arm ends of above-mentioned supporter have the slide block that cooperates with above-mentioned guide rail respectively; Also have the hold-down bolt that cooperates with supporter on above-mentioned opening housing the 3rd frame, be provided with holddown spring between the 3rd frame and the supporter.
Clamping and positioning device of the present invention is arranged on the holder both sides with spacing slide rail, has guaranteed that not only stator can not move on the direction of motion of motor slide rails, and the rotation of restriction stator on three directions.Above-mentioned opening housing also has the dog screw that cooperates with supporter.The spring of lower end of the present invention and hold-down bolt play a part to set precompression, and hold-down bolt then plays fixing spring, and work to regulate precompression with dog screw, can set precompression according to different needs like this.
The present invention can also increase the function of measuring precompression.
Clamping, the The Location of ultrasound electric machine report seldom also there is not the patent of this respect at present.The present invention proposes new clamping, localization method.It is designed to stator, mover, hold assembly and positioning element four parts with electric machine structure.Hold assembly comprises opening rectangle housing and supporter, and stator is fixed on opening rectangle housing through holder, and it can not move on the direction of motion of motor slide rails, and with the perpendicular direction of the direction of motion of guide rail on can move.This invention has improved the stability of electric machine structure.In addition, increased bolt, spring members and screw positioning element newly in the lower end of holder, can control the precompression between stator and mover accurately, can guarantee that the precompression that in installation process, applies meets design requirement.
Description of drawings:
Fig. 1 is the structural representation mode 1 that is used for the linear ultrasonic motor clamping and positioning device of the present invention.
Fig. 2, the 3rd, the structural representation mode 2 that is used for the linear ultrasonic motor clamping and positioning device of the present invention.
Fig. 4 is that the motor of national inventing patent " based on the K shape linear ultrasonic motor of continuous amplitude transformer principle " improves organization plan figure.
Label title among the figure: 1. arm tail; 2. holddown spring; 3. boss; 4. supporting arm; 5 dog screws; 6. opening housing; 7. pretension bolt; 8.V shape stator; 9. cylinder rail; 10. mover guide rail; 11. slide block; 12. spacing slide rail; 13. hold-down bolt.
Embodiment:
Embodiment 1: a kind of to be used for the linear ultrasonic motor clamping and positioning device as shown in Figure 1.Be characterized in: 1. be connected with cylinder rail 9 with holddown spring 2 between stator and the supporter 1, hold assembly spare comprises cylinder rail 9, holddown spring 2, opening rectangle housing 6.Be screwed between cylinder rail 9 and the opening rectangle housing 6 and be connected.Holddown spring 2 and cylinder rail about 2 minutes two, the direction of motion of axial direction and guide rail 10 is perpendicular.Arm tail 1 is horizontal rectangular slab, has on the plate and the suitable circular hole of cylinder rail diameter.Holddown spring 2 is contained on the cylinder rail 9, is clipped between arm tail 1 and the boss 2.Two Langevin-type transducers are fixed on the hold assembly, so Langevin-type transducer only can be along cylinder rail 2, cylinder rail 2 axially to moving.This device has limited displacement and the rotation of stator in other directions, thereby can reduce the idle work of stator, raises the efficiency.2. can apply and measure precompression, comprise holddown spring 2, dog screw 5, hold assembly, opening rectangle housing 4.There is through hole opening rectangle housing bottom, the through hole dog screw of packing into.Through changing the position of opening rectangle housing, realize adjusting to holddown spring 2 strokes, accomplish control to the motor precompression.Dog screw 5 be used to control opening rectangle housing 4 relatively with the position of guide rail 10, realization is to the control of motor precompression.Before motor was installed, the length of dog screw 5 was through demarcating.Move opening rectangle housing to the guide rail direction, cause dog screw contact supporting arm, the distortion of holddown spring 2 at this moment makes and produces precompression between stator and the guide rail that this precompression is the precompression value of demarcation, thereby realizes the accurate loading of precompression.
Hold assembly makes electric machine structure stable, and delivery efficiency improves; The accurate loading of the precompression between fixed, the mover helps the stable operation of motor, makes motor that good delivery efficiency and Gao De delivery efficiency arranged.
Embodiment 2: a kind of to be used for the linear ultrasonic motor clamping and positioning device as shown in Figure 2.Be characterized in: 1. be connected with slide rail between stator and the holder, hold assembly comprises slide block 11, spacing slide rail 12 and opening rectangle housing 6.Between spacing slide rail 12 and the opening rectangle housing, all be screwed between supporting arm 4 and the slide block 11 and be connected.About slide rail divides two, the direction of motion of its glide direction and guide rail 10 is perpendicular.Hold assembly is fixed two Langevin-type transducers, so the slide rail that moves through of Langevin-type transducer is realized.This device has limited displacement and the rotation of stator in other directions, thereby can reduce the idle work of stator, raises the efficiency.2. can apply and measure precompression, comprise hold-down bolt 13, holddown spring 2, dog screw 7, supporting arm 4, opening rectangle housing 6.Opening rectangle housing bottom has two through holes, and the intermediate throughholes place hold-down bolt 5 of packing into also has round tube hole in the middle of the bottom of supporting arm 4, and the latter half Circularhole diameter is greater than the first half, and the hold-down bolt head portion gets into this circular hole, and can stretch in the small sircle hole.The holddown spring 2 of on the hold-down bolt round bar, packing into, holddown spring 2 outer wide less than supporting arm 4 the big hole width but greater than the small sircle hole width, promptly the holddown spring top is stuck in big small sircle hole junction.Through changing the distance of supporting arm 4 and opening rectangle housing, realize adjusting to holddown spring 2 strokes, accomplish applying precompression between stator and the mover and the control of motor precompression.Dog screw 5 be used to control opening rectangle housing 6 relatively with the position of guide rail 10, realization is to the control of motor precompression.Before motor was installed, the length of dog screw 5 was through demarcating.Move opening rectangle housing to the guide rail direction, cause dog screw contact supporting arm, the distortion of holddown spring 2 at this moment makes and produces precompression between stator and the guide rail that this precompression is the precompression value of demarcation, thereby realizes the accurate loading of precompression.
Hold assembly makes electric machine structure stable, and delivery efficiency improves; The accurate loading of the precompression between fixed, the mover helps the stable operation of motor, makes motor that good delivery efficiency and Gao De delivery efficiency arranged.
Claims (4)
1. clamping and positioning device based on the K shape linear ultrasonic motor of continuous amplitude transformer principle is used for the clamping location of V-arrangement stator, and this V-arrangement stator has two oscillators, and each oscillator is made up of front end housing, piezoelectric ceramic piece group, rear end cap, is characterised in that:
Clamping and positioning device comprises opening housing (6) and supporter;
Above-mentioned opening housing (6) is successively by first frame, second frame, and the 3rd frame, the 4th frame is formed, and first wherein parallel with mover guide rail (10) frame is provided with opening;
Above-mentioned supporter has two vertical with V-arrangement stator two oscillators respectively supporting arms (4), and each supporting arm (4) is installed between the two adjacent piezoelectric ceramic piece groups of corresponding oscillator, and is fixed together through pretension bolt (7); V-arrangement stator (8) is whole to be installed on said opening housing (6) inside of rectangle through supporter, and the driving of V-arrangement stator foot is positioned at the first frame opening part;
Second frame of above-mentioned opening housing (6) and the 4th frame are equipped with the boss parallel with first frame (3), through cylinder rail (9) is installed between the above-mentioned boss (3) and first frame; Every supporting arm end of above-mentioned supporter all has the arm tail (1) parallel with first frame, and the arm tail has manhole, is installed on the cylinder rail (9) through manhole, and stator can only be moved along stator symmetry axis direction; Between above-mentioned boss and arm tail, also be provided with holddown spring (2).
2. the clamping and positioning device of the K shape linear ultrasonic motor based on continuous amplitude transformer principle according to claim 1, it is characterized in that: above-mentioned opening housing (6) also has the dog screw (5) that cooperates with supporter.
3. clamping and positioning device based on the K shape linear ultrasonic motor of continuous amplitude transformer principle is used for the clamping location of V-arrangement stator, and this V-arrangement stator has two oscillators, and each oscillator is made up of front end housing, piezoelectric ceramic piece group, rear end cap, is characterised in that:
Clamping and positioning device comprises opening housing (6) and supporter;
Above-mentioned opening housing (6) is successively by first frame, second frame, and the 3rd frame, the 4th frame is formed, and first wherein parallel with mover guide rail (10) frame is provided with opening;
Above-mentioned supporter has two vertical with V-arrangement stator two oscillators respectively supporting arms (4), and each supporting arm (4) is installed between the two adjacent piezoelectric ceramic piece groups of corresponding oscillator, and is fixed together through pretension bolt (7); V-arrangement stator (8) is whole to be installed on said opening housing (6) inside of rectangle through supporter, and the driving of V-arrangement stator foot is positioned at the first frame opening part;
Second frame of above-mentioned opening housing and the 4th frame are provided with the guide rail (12) parallel with stator symmetry axis direction; Two supporting arm ends of above-mentioned supporter have the slide block (11) that cooperates with above-mentioned guide rail respectively;
Also have the hold-down bolt (13) that cooperates with supporter on above-mentioned opening housing (6) the 3rd frame, be provided with holddown spring (2) between the 3rd frame and the supporter.
4. the clamping and positioning device of the K shape linear ultrasonic motor based on continuous amplitude transformer principle according to claim 3, it is characterized in that: above-mentioned opening housing (6) also has the dog screw (5) that cooperates with supporter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100183432A CN101728972B (en) | 2010-01-14 | 2010-01-14 | Clamping and positioning device of K-shaped linear ultrasonic motor based on continuous amplitude transformer principle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010100183432A CN101728972B (en) | 2010-01-14 | 2010-01-14 | Clamping and positioning device of K-shaped linear ultrasonic motor based on continuous amplitude transformer principle |
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| CN101728972A CN101728972A (en) | 2010-06-09 |
| CN101728972B true CN101728972B (en) | 2012-02-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984550B (en) * | 2010-11-24 | 2012-07-18 | 南京航空航天大学 | Flexible hinge based clamping and positioning device for linear ultrasonic motor |
| CN101984549B (en) * | 2010-11-24 | 2012-09-26 | 南京航空航天大学 | Clamp positioning device for linear ultrasonic motor |
| CN103259450B (en) * | 2013-04-15 | 2015-08-12 | 南京航空航天大学 | Linear ultrasonic motor stator clamping position and precompression bringing device |
| CN111726030B (en) * | 2020-05-25 | 2021-05-25 | 南京航空航天大学 | Linear ultrasonic motor and constant pre-pressure applying method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404467A (en) * | 2008-07-04 | 2009-04-08 | 南京航空航天大学 | K shaped linear ultrasound motor based on continuous amplitude transforming rod principle |
| CN201656810U (en) * | 2010-01-14 | 2010-11-24 | 南京航空航天大学 | K-shaped linear ultrasonic motor clamping and positioning device based on continuous amplitude transformer principle |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404467A (en) * | 2008-07-04 | 2009-04-08 | 南京航空航天大学 | K shaped linear ultrasound motor based on continuous amplitude transforming rod principle |
| CN201656810U (en) * | 2010-01-14 | 2010-11-24 | 南京航空航天大学 | K-shaped linear ultrasonic motor clamping and positioning device based on continuous amplitude transformer principle |
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