CN101604929A - Small-sized piezoelectric linear motor - Google Patents
Small-sized piezoelectric linear motor Download PDFInfo
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- CN101604929A CN101604929A CNA2009101814720A CN200910181472A CN101604929A CN 101604929 A CN101604929 A CN 101604929A CN A2009101814720 A CNA2009101814720 A CN A2009101814720A CN 200910181472 A CN200910181472 A CN 200910181472A CN 101604929 A CN101604929 A CN 101604929A
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- linear motor
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- vibrating head
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Abstract
The present invention relates to a kind of small-sized piezoelectric linear motor, only need single-phase supersonic frequency AC sine wave power drives, change the frequency of drive signal, can change the piezoelectric linear motor of the moving direction of moving body, belong to the electrical micro-machine technical field, the present invention is a kind of new construction piezoelectric linear motor, it is improvement to existing piezoelectric linear motor, by vibrating head, moving body, piezoelectric element and base constitute, the present invention is simple in structure, utilizes single-phase sine wave signal to drive, and vibrating head one end is cylindrical, the other end is bolt arrangement, moving body is the telescoping structure that contacts with the vibrating head face of cylinder, and the present invention realizes miniaturization easily, and the thrust of face of cylinder contact having increased motor, make this motor be easier to practicability, the present invention is suitable for the object precision positioning, meticulous mass transport or vibration cutting tool.
Description
Technical field
The present invention relates to a kind of small-sized piezoelectric linear motor, only need single-phase supersonic frequency AC sine wave power drives, change the frequency of drive signal, can change the piezoelectric linear motor of the moving direction of moving body, belong to the electrical micro-machine technical field.
Background technology
Piezoelectric ultrasonic motor be the ultrasonic vibration that excites of a kind of inverse piezoelectric effect of utilizing piezoelectric ceramic as actuating force, coupling converts the rotation or the straight-line novel direct driving electrical micro-machine of moving body to by the frictional force between oscillating component and the movable part.
Existing piezoelectricity straight line driver generally needs two-phase supersonic frequency sine wave alternating current to drive, as π shape piezoelectricity straight line driver, it drives foot can make the bar shaped moving body move left and right that is in contact with it, change the phase sequence of two-phase supersonic frequency sine wave alternating current, can change the moving direction of moving body.Be that a kind of vertical point contacts or the line contact between the driving foot of this class piezoelectricity straight line driver and the moving body, the transmission efficiency of this contact is low, wearing and tearing greatly, easily produce noise.
It is investigated and still do not have the piezoelectric linear motor that the frequency that adopts face of cylinder contact, utilizes the change drive signal changes the moving direction of moving body at present in domestic and international journal data storehouse.
Summary of the invention
The purpose of this invention is to provide a kind of small-sized piezoelectric linear motor, solving existing piezoelectric linear motor is that vertical point contact or there is low, the deficiencies such as greatly, easily producing noise of wearing and tearing of transmission efficiency in the Contact Transmission mode of line contact because of its vibrating body and moving body, and the present invention realizes miniaturization easily, is suitable for the object precision positioning, meticulous mass transport or vibrate cutting tool.
The objective of the invention is to be achieved through the following technical solutions, a kind of small-sized piezoelectric linear motor is characterized in that, described motor is made of vibrating head, moving body, piezoelectric element and base; A cylindrical end of vibrating head is nested with moving body, and the other end of vibrating head is bolt arrangement, and bolt part is screwed on the base after being nested with piezoelectric element, the piezoelectric element external power supply.
Described vibrating head adopts stainless steel, aluminium alloy or copper material.
Described moving body is a telescoping structure, and telescopic moving body is that the face of cylinder contacts with cylindrical vibrating head.
Described piezoelectric element is hollow cyclic structure, by several layers positive polarity positive polarity, negative polarity anticathode is overrided to form, and places corresponding copper electrode sheet.
The present invention is a kind of new construction piezoelectric linear motor, is to the improvement of existing piezoelectric linear motor, is made of vibrating head, moving body, piezoelectric element and base.The present invention is simple in structure, utilizes single-phase sine wave signal to drive, and vibrating head one end is cylindrical, and the other end is bolt arrangement, and moving body is the telescoping structure that contacts with the vibrating head face of cylinder.The present invention realizes miniaturization easily, and the thrust of face of cylinder contact having increased motor makes this motor be easier to practicability.The present invention is suitable for object precision positioning, meticulous mass transport or vibration cutting tool.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure, 1 vibrating head, 2 moving bodys, 3 piezoelectric elements, 4 bases.
Embodiment
Further specify the present invention in conjunction with the accompanying drawings and embodiments, as shown in Figure 1, the present invention is made of with vibrating head 1 base 4, piezoelectric element 3, moving body 2; Vibrating head 1 a columniform end is nested with moving body 2, and other end bolt arrangement portion is screwed on the base 4 after being nested with piezoelectric element 3.Vibrating head 1 adopts metal material to make, and is specially stainless steel or aluminium alloy or copper material; Moving body 2 is a telescoping structure, and telescopic moving body 2 is that the face of cylinder contacts with cylindrical vibrating head 1 cylindrical portion; Piezoelectric element 3 is hollow loop configuration, by several layers positive polarity positive polarity, negative polarity anticathode is overrided to form, and places corresponding copper electrode sheet; Piezoelectric element 3 external power supplys during use, base 4 are fixed on and use corresponding position of the present invention.When piezoelectric element 3 stretching vibration under single-phase supersonic frequency sine wave signal excitation, and when driving vibrating head 1 and doing the axial stretching vibration, telescopic moving body 2 is under the effect of frictional force and inertia force, move forward and backward along vibrating head 1, the frequency that changes drive signal can change the moving direction of telescopic moving body 2.The axial stretching of vibrating head 1 is because the axial stretching vibration of piezoelectric element 3 causes, is a kind of mechanical deformation.
Claims (4)
1, a kind of small-sized piezoelectric linear motor is characterized in that, described motor is made of vibrating head, moving body, piezoelectric element and base; A cylindrical end of vibrating head is nested with moving body, and the other end of vibrating head is bolt arrangement, and bolt part is screwed on the base after being nested with piezoelectric element, the piezoelectric element external power supply.
2, small-sized piezoelectric linear motor according to claim 1 is characterized in that, vibrating head adopts stainless steel, aluminium alloy or copper material.
3, small-sized piezoelectric linear motor according to claim 1 is characterized in that, moving body is a telescoping structure, and telescopic moving body is that the face of cylinder contacts with cylindrical vibrating head.
4, small-sized piezoelectric linear motor according to claim 1 is characterized in that, piezoelectric element is hollow loop configuration, by several layers positive polarity positive polarity, negative polarity anticathode is overrided to form, and places corresponding copper electrode sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101814720A CN101604929A (en) | 2009-06-29 | 2009-06-29 | Small-sized piezoelectric linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101814720A CN101604929A (en) | 2009-06-29 | 2009-06-29 | Small-sized piezoelectric linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101604929A true CN101604929A (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101814720A Pending CN101604929A (en) | 2009-06-29 | 2009-06-29 | Small-sized piezoelectric linear motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN101604929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296194A (en) * | 2012-03-05 | 2013-09-11 | 中央研究院 | piezoelectric actuator |
-
2009
- 2009-06-29 CN CNA2009101814720A patent/CN101604929A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296194A (en) * | 2012-03-05 | 2013-09-11 | 中央研究院 | piezoelectric actuator |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091216 |