CN203119790U - Piezoelectric drive linear moving device - Google Patents
Piezoelectric drive linear moving device Download PDFInfo
- Publication number
- CN203119790U CN203119790U CN 201320144585 CN201320144585U CN203119790U CN 203119790 U CN203119790 U CN 203119790U CN 201320144585 CN201320144585 CN 201320144585 CN 201320144585 U CN201320144585 U CN 201320144585U CN 203119790 U CN203119790 U CN 203119790U
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- CN
- China
- Prior art keywords
- support frame
- upper support
- line slideway
- cover
- fairlead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a piezoelectric drive moving device and discloses a piezoelectric drive linear moving device to solve the problems that an existing single combined vibrator is adopted as a linear driving device of a stator and the linear driving device adopts a bearing as a supporting structure and thereby is small in driving force and complex in structure. The piezoelectric drive linear moving device comprises an upper supporting frame, a lower supporting frame, a linear guide rail, a guide sleeve, two sets of pretightening mechanisms and two sets of stators, the stators are respectively arranged on the upper supporting frame and the lower supporting frame, one end of the lower supporting frame is rotatably connected with one end of the lower supporting frame while the other end of the same is connected with the other of of the same through the pretightening mechanisms, the guide sleeve is rotatably connected with one side of the upper supporting frame, one end of the linear guide rail penetrates through the guide sleeve, the other end of the linear guide rail penetrates between and contacts with the pretightening mechanisms, and two driving feet are arranged on the guide rail between the guide sleeve and the pretightening mechanisms oppositely and clamp the linear guide rails respectively. The piezoelectric drive linear moving device is used in the high-thrust precise driving field.
Description
Technical field
The utility model relates to a kind of Piezoelectric Driving telecontrol equipment, is specifically related to a kind of combined elements as the Piezoelectric Driving linear motion device of stator.
Background technology
The Piezoelectric Driving linear motion device is particularly suitable for accurate driving, optical instrument, application such as field such as Machine-Tool Control.This device is mainly by stator (or oscillator), mover (or guide rail), compositions such as supporting construction and compression system.Utilize the inverse piezoelectric effect of piezoelectric ceramic in the work, produce oblique or elliptic motion at the stator drive part, drive the unidirectional straight line of mover or linear reciprocating motion by means of contact friction force.
At present, realize that straight-line oscillator structure has various ways, wherein combined elements is oscillator commonly used, it comprises two kinds of structures, by literature search, Chinese patent application number is the oscillator that 200810124426.2 utility application proposes a kind of one combination, China Patent No. is that 03132540.8 utility model patent proposes a kind of separation combined elements, the combined elements structure often adopts the kind of drive of oscillator fixed guide motion, number is the K shape structure of the linear motion actuator that 200810124426.2 utility application proposes as Chinese patent application; Also adopt fixedly oscillator move mode of guide rail in some occasion, the mode for oscillator moves can realize that oscillator is along the rectilinear motion of guide rail after the energising.
But, at present with the linear drive apparatus complex structure of this combined elements as stator, be that the support section that 201010018343.2 utility model patent proposes adopts bearing arrangement as China Patent No., influenced the reliability of drive unit; Another common feature is all to adopt single combined elements structure, and actuating force is little.Because the support of piezo-electric device and clamping have material impact to service behaviour, temporarily there is not a kind of special supporting mechanism at this combined elements, make this linear drive apparatus produce bigger actuating force.
The utility model content
The purpose of this utility model is to adopt bearing as supporting construction for solving existing single combined elements as the linear drive apparatus of stator, the less and baroque problem of actuating force, and then a kind of Piezoelectric Driving linear motion device is provided.
The utility model is to address the above problem the technical scheme of taking to be: a kind of Piezoelectric Driving linear motion device of the present utility model comprises upper support frame, the lower support frame, line slideway, fairlead, two cover pre-tightening mechanisms and two cover stators, every cover stator comprises two oscillators, each oscillator comprises front end housing, rear end cap, electrode slice and piezoelectric ceramic, being provided with electrode slice and piezoelectric ceramic and four between front end housing and the rear end cap connects as one, the front end housing of two oscillators of every cover stator is connected as a single entity, and the angle between the center line of two oscillators is 30 °～90 °, the junction of two oscillators is for driving foot, upper support frame and lower support frame are separately positioned on the both sides up and down of line slideway, two cover stators are separately positioned on upper support frame and the lower support frame, one end of upper support frame and an end of lower support frame are rotationally connected, the other end of the other end of upper support frame and lower support frame is connected by two cover pre-tightening mechanisms, pre-tightening mechanism is used for regulating two stators to the pretightning force of line slideway, two cover pre-tightening mechanisms are over against setting, one side of fairlead and described upper support frame is rotationally connected, one end of line slideway passes fairlead, the other end of line slideway passes between two pre-tightening mechanisms and contacts with two pre-tightening mechanisms, and two drive foot over against being arranged on the line slideway between fairlead and two pre-tightening mechanisms and clamping line slideway respectively.
The beneficial effects of the utility model are: the utility model adopts two cover stators, every cover stator is connected by two oscillators and forms single combined elements together, the other end of upper support frame is connected by two cover pre-tightening mechanisms with the other end of lower support frame, two drive foot and clamp line slideway, regulate two stators of control to the pretension of line slideway by pre-tightening mechanism, and then guaranteed that the oscillator of two cover stators is to the consistency of the pretightning force of line slideway, the adjustment of this conforming pretightning force can not be affected because oscillator drives the wearing and tearing of foot, can not hinder the operation of guide rail, simultaneously, pre-tightening mechanism is realized the auxiliary guide effect to guide rail, during use, reasonably power up mode by two oscillators employings to every cover stator and encourage the piezoelectric ceramic vibration, motivate the mode of oscillation that voltage phase difference is pi/2 on two oscillators of every cover stator, guarantee that two cover stators produce consistent driving, and then realize that two stators are to the driving effect of guide rail, guarantee namely that also line slideway moves to a direction, thereby it is big as supporting rail frictional force to have solved the use bearing, the driving thrust problem of smaller that oscillator produces guide rail.
In order to prevent that line slideway from producing swing in motion process, fluctuation of service, the utility model is provided with fairlead, line slideway is located on the fairlead, by fairlead-two a driving foot line slideway is led, one end of upper support frame and an end of lower support frame are rotationally connected, therefore, when driving foot, oscillator weares and teares with guide rail, because the existence of pretightning force, upper support frame and lower support frame can rotate a low-angle towards the other side, at this moment, relative motion also takes place in guide rail, fairlead also can rotate relative to upper support frame, fairlead can the self adaptation guide rail rotatablely move, make and do not have normal pressure between guide rail and the fairlead, at this moment, have only to drive foot and have friction to guide rail, this frictional force is the power that drives the guide rail operation, and the utility model drops to the resistance of guide rail and is approximately zero, reduced the loss of actuating force effectively, improved the ability that drives load, the utility model adopts two cover stators, and every cover stator is connected by two oscillators and forms single combined elements together, two oscillator center line angles are 30 °～90 °, and existing apparatus actuating force 15 newton that compare single combined elements have improved 80%～100%.The utility model reasonable in design, volume is little, wearing and tearing to contact surface have adaptive ability, adopt the structure of two combined elements can produce bigger thrust, simultaneously can realize rectilinear motion stably, motion stabilization, suitable application area is wide, and the actuating force that can be provided by static friction is provided load capacity of the present utility model all the time.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model, and Fig. 2 is the right view of Fig. 1, and Fig. 3 is the left view of Fig. 1, and Fig. 4 is the vertical view of Fig. 1, and Fig. 5 is main sectional structure schematic diagram of the present utility model.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1～Fig. 5, a kind of Piezoelectric Driving linear motion device of present embodiment comprises upper support frame 1, lower support frame 8, line slideway 7, fairlead 12, two cover pre-tightening mechanisms 17 and two cover stators, every cover stator comprises two oscillators 18, each oscillator 18 comprises front end housing 10, rear end cap 2, electrode slice 3 and piezoelectric ceramic 4, be provided with electrode slice 3 between front end housing 10 and the rear end cap 2 and piezoelectric ceramic 4 and four connects as one, the front end housing 10 of two oscillators 18 of every cover stator is connected as a single entity, and the angle β between the center line of two oscillators 18 is 30 °～90 °, the junction of two oscillators 18 is for driving sufficient 10-1, upper support frame 1 and lower support frame 8 are separately positioned on the both sides up and down of line slideway 7, two cover stators are separately positioned on upper support frame 1 and the lower support frame 8, one end of upper support frame 1 and an end of lower support frame 8 are rotationally connected, the other end of the other end of upper support frame 1 and lower support frame 8 is connected by two cover pre-tightening mechanisms 17, pre-tightening mechanism 17 is used for regulating two stators to the pretightning force of line slideway 7, two cover pre-tightening mechanisms 17 are over against setting, fairlead 12 is rotationally connected with a side of described upper support frame 1, one end of line slideway 7 passes fairlead 12, the other end of line slideway 7 passes between two pre-tightening mechanisms 17 and contacts with two pre-tightening mechanisms 17, and two drive sufficient 10-1 over against being arranged on the line slideway 7 between fairlead 12 and two pre-tightening mechanisms 17 and clamping line slideway 7 respectively.
The piezoelectric ceramic of present embodiment is the combination piezoelectric ceramic.
Embodiment two: present embodiment is described in conjunction with Fig. 2 and Fig. 3, the described every cover pre-tightening mechanism 17 of present embodiment comprises connecting rod 6, first nut 16 and elastomeric element 14, connecting rod 6 passes upper support frame 1 and lower support frame 8, be positioned on the connecting rod 6 of lower support frame 8 lower ends and be equipped with an elastomeric element 14, the lower end of connecting rod 6 is threaded with first nut 16, and the upper end of connecting rod 6 and upper support frame 1 removably connect.The elastomeric element of present embodiment is preferably with the little elastomeric element of rigidity, present embodiment is adjusted the decrement of elastomeric element by tightening first nut, be tightened to the driving foot (two oscillators in each stator) of two stators up and down on the line slideway in advance, and the adjustment of realization pretightning force size, simple in structure, reasonable in design, it is reliable and stable to regulate control.Other is with specifically enforcement one is identical.
Embodiment three: in conjunction with Fig. 2 and Fig. 3 present embodiment is described, described two elastomeric elements 14 of present embodiment are helical spring.Present embodiment is preferably with the little helical spring of rigidity, the nut of present embodiment can be hex nut, adjust helical spring decrement by tightening first nut, be tightened to the driving foot (two oscillators in each stator) of two stators up and down on the line slideway in advance, because spring rate is little, decrement by quantitative adjustment spring, can quantitatively calculate pretightning force, thereby apply pretightning force quantitatively, because wear extent is very little, the pretightning force variable quantity that wearing and tearing cause can be ignored, and can realize pretightning force size adjustment better effects if.Other is identical with embodiment two.
Embodiment four: present embodiment is described in conjunction with Fig. 2 and Fig. 3, the described every cover pre-tightening mechanism 17 of present embodiment also comprises lead 5, described lead 5 is staged hollow guiding post, lead 5 is located on the connecting rod 6 between upper support frame 1 and the lower support frame 8, and the smaller diameter end of lead 5 is plugged on the lower surface of upper support frame 1, the other end of line slideway 7 passes between the larger diameter end of two leads 5, and with the contacts side surfaces of the larger diameter end of two leads 5.So arrange, be convenient to the auxiliary guide effect to line slideway.Other is identical with embodiment two or three.
Embodiment five: in conjunction with Fig. 1 and Fig. 5 present embodiment is described, the described device of present embodiment also comprises first straight pin 11, and an end of upper support frame 1 and an end of lower support frame 8 are rotationally connected by first straight pin 11.So arrange, easy to connect reliable, rotating effect is good.Other is identical with embodiment one.
Embodiment six: in conjunction with Fig. 1～Fig. 3 present embodiment is described, the described line slideway 7 of present embodiment is square rail, and described fairlead 12 is ' returning ' font fairlead.So arrange, satisfy actual needs, can effectively realize the guide effect of line slideway.Other is identical with embodiment one or five.
Embodiment seven: in conjunction with Fig. 1 and Fig. 3 present embodiment is described, the described device of present embodiment also comprises two second straight pins 13, and fairlead 12 is rotationally connected by two second straight pins 13 respectively with upper support frame 1.So arrange, satisfy actual needs, the rotation of upper support frame and lower support frame makes not have normal pressure between guide rail and the fairlead to the influence of fairlead in the time of effectively satisfying the driving foot to the line slideway pretension.Other is identical with embodiment one or five.
Embodiment eight: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the described every cover pre-tightening mechanism 17 of present embodiment also comprises second nut 9, and the upper end of connecting rod 6 removably connects with upper support frame 1 by second nut 9.So arrange, connect reliable, easy to use.Other is identical with embodiment one.
Embodiment nine: in conjunction with Fig. 2-Fig. 5 present embodiment is described, the described device of present embodiment also comprises four screws 15, and the electrode slice 3 on each oscillator 18 and piezoelectric ceramic 4 removably connect by four screws 15 and front end housing 10 and rear end cap 2.So arrange, connect reliable, easy to use.Other is identical with embodiment one.
Claims (9)
1. Piezoelectric Driving linear motion device, it is characterized in that: described device comprises upper support frame (1), lower support frame (8), line slideway (7), fairlead (12), two cover pre-tightening mechanisms (17) and two cover stators, every cover stator comprises two oscillators (18), each oscillator (18) comprises front end housing (10), rear end cap (2), electrode slice (3) and piezoelectric ceramic (4), be provided with electrode slice (3) between front end housing (10) and the rear end cap (2) and piezoelectric ceramic (4) and four connects as one, the front end housing (10) of two oscillators (18) of every cover stator is connected as a single entity, and the angle (β) between the center line of two oscillators (18) is 30 °～90 °, the junction of two oscillators (18) is for driving foot (10-1), upper support frame (1) and lower support frame (8) are separately positioned on the both sides up and down of line slideway (7), two cover stators are separately positioned on upper support frame (1) and the lower support frame (8), one end of one end of upper support frame (1) and lower support frame (8) is rotationally connected, the other end of the other end of upper support frame (1) and lower support frame (8) is connected by two cover pre-tightening mechanisms (17), pre-tightening mechanism (17) is used for regulating two stators to the pretightning force of line slideway (7), two cover pre-tightening mechanisms (17) are over against setting, fairlead (12) is rotationally connected with a side of described upper support frame (1), one end of line slideway (7) passes fairlead (12), the other end of line slideway (7) passes between two pre-tightening mechanisms (17) and contacts with two pre-tightening mechanisms (17), and two drive foot (10-1) and go up and clamp respectively line slideway (7) over against being arranged on the line slideway (7) that is positioned between fairlead (12) and two pre-tightening mechanisms (17).
2. a kind of Piezoelectric Driving linear motion device according to claim 1, it is characterized in that: described every cover pre-tightening mechanism (17) comprises connecting rod (6), first nut (16) and elastomeric element (14), connecting rod (6) passes upper support frame (1) and lower support frame (8), be positioned on the connecting rod (6) of lower support frame (8) lower end and be equipped with an elastomeric element (14), the lower end of connecting rod (6) is threaded with first nut (16), and the upper end of connecting rod (6) and upper support frame (1) removably connect.
3. a kind of Piezoelectric Driving linear motion device according to claim 2, it is characterized in that: described two elastomeric elements (14) are helical spring.
4. according to claim 2 or 3 described a kind of Piezoelectric Driving linear motion devices, it is characterized in that: described every cover pre-tightening mechanism (17) also comprises lead (5), described lead (5) is staged hollow guiding post, lead (5) is located on the connecting rod (6) that is positioned between upper support frame (1) and the lower support frame (8), and the smaller diameter end of lead (5) is plugged on the lower surface of upper support frame (1), the other end of line slideway (7) passes between the larger diameter end of two leads (5), and with the contacts side surfaces of the larger diameter end of two leads (5).
5. a kind of Piezoelectric Driving linear motion device according to claim 1, it is characterized in that: described device also comprises first straight pin (11), an end of an end of upper support frame (1) and lower support frame (8) is rotationally connected by first straight pin (11).
6. a kind of Piezoelectric Driving linear motion device according to claim 1 or 5, it is characterized in that: described line slideway (7) is square rail, and described fairlead (12) is ' returning ' font fairlead.
7. a kind of Piezoelectric Driving linear motion device according to claim 1 or 5, it is characterized in that: described device also comprises two second straight pins (13), fairlead (12) is rotationally connected by two second straight pins (13) respectively with upper support frame (1).
8. a kind of Piezoelectric Driving linear motion device according to claim 1, it is characterized in that: described every cover pre-tightening mechanism (17) also comprises second nut (9), the upper end of connecting rod (6) removably connects by second nut (9) and upper support frame (1).
9. a kind of Piezoelectric Driving linear motion device according to claim 1, it is characterized in that: described device also comprises four screws (15), and the electrode slice (3) on each oscillator (18) and piezoelectric ceramic (4) removably connect by four screws (15) and front end housing (10) and rear end cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144585 CN203119790U (en) | 2013-03-27 | 2013-03-27 | Piezoelectric drive linear moving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144585 CN203119790U (en) | 2013-03-27 | 2013-03-27 | Piezoelectric drive linear moving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119790U true CN203119790U (en) | 2013-08-07 |
Family
ID=48900103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320144585 Withdrawn - After Issue CN203119790U (en) | 2013-03-27 | 2013-03-27 | Piezoelectric drive linear moving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151959A (en) * | 2013-03-27 | 2013-06-12 | 哈尔滨工业大学 | Piezoelectric driven linear motion device |
-
2013
- 2013-03-27 CN CN 201320144585 patent/CN203119790U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151959A (en) * | 2013-03-27 | 2013-06-12 | 哈尔滨工业大学 | Piezoelectric driven linear motion device |
| CN103151959B (en) * | 2013-03-27 | 2015-02-11 | 哈尔滨工业大学 | Piezoelectric driven linear motion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130807 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |