CN102005964B - Magnetostriction type inertial impact micro linear motor - Google Patents
Magnetostriction type inertial impact micro linear motor Download PDFInfo
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- CN102005964B CN102005964B CN 201010612116 CN201010612116A CN102005964B CN 102005964 B CN102005964 B CN 102005964B CN 201010612116 CN201010612116 CN 201010612116 CN 201010612116 A CN201010612116 A CN 201010612116A CN 102005964 B CN102005964 B CN 102005964B
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- giant magnetostrictive
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- magnetostrictive rod
- cylinder
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Abstract
The invention relates to a magnetostriction type inertial impact micro linear motor. The motor consists of a guide rail, a left driver, a moving block and a right driver, wherein the moving block is arranged on the guide rail; the left driver and the right driver have the same structure; the left driver is fixed at one end of the moving block; the right driver is fixed at the other end of the moving block; a linear bearing is arranged at the closed end of the cavity of a cylindrical shell of the driver; a spring and a mass block which are pressed against each other are arranged in the cavity of the linear bearing; a cylinder which is matched with a coil frame for mounting a coil is arranged at the other end of the cavity of the cylindrical shell; a giant magnetostrictive rod made of a giant magnetostrictive material Terfenol-D is arranged in the center of the coil frame by sliding fit; one end of the giant magnetostrictive rod is pressed against the mass block, and the other end of the giant magnetostrictive rod is pressed against the moving block; and a power supply outputs current to the coil according to a saw-tooth current signal. In the motor, the conversion between electromagnetic energy and mechanical energy is realized by the giant magnetostrictive rod, and the motor has the advantages of high driving capacity, high speed, large travel and precise positioning.
Description
Technical field
The present invention relates to a kind of micromachine, particularly a kind of magnetostriction type inertia impact miniature linear.
Background technology
The inertia impact motor is to utilize inertia impact to realize a kind of micro drives mechanism of accurate displacement, and it has, and range of movement is big, displacement resolution is high, advantage of simple structure, and can when carrying out step motion, realize accurately location.At present, the inertia impact motor has obtained Preliminary Applications in fields such as bioengineering, miniature parts operation and assembling, robot and medicine equipments.
Existing inertia impact miniature linear generally adopts piezoelectric to drive, and just utilizes the piezoceramics crystal inverse piezoelectric effect, and electric energy is converted into mechanical energy.Piezoelectric type inertia impact miniature linear is also referred to as the piezoelectric micromotor motor, is to utilize the quick distortion of piezoelectric when rapid energising to produce inertia impact, forms a kind of micro drives mechanism that driving force realizes accurate displacement then.
But because piezoelectric exists that deflection is little, power density is little, high voltage drive, electrode are prone to the deficiency that punctures; Cause that existing piezoelectric type inertia impact miniature linear exists that movement velocity is slow, load capacity is weak, the problem of high voltage drive, poor reliability, thereby use and be restricted.
Summary of the invention
The purpose of this invention is to provide that a kind of ability that drives load is strong, speed is fast, stroke is big, the location is accurate, the magnetostriction type inertia impact miniature linear of low voltage drive.
Technical scheme of the present invention is: a kind of magnetostriction type inertia impact miniature linear; Form by guide rail, left driver, moving mass and right driver; Said guide rail is that two ends are fixed on two poles arranged side by side on the base; Said moving mass is big, the middle little cylinder combinations in two ends, and moving mass is slidingly matched and is placed on two poles arranged side by side, and the structure of said left driver and right driver is identical; The circular cylindrical shell of left side driver is fixed on an end of moving mass through securing member, and the circular cylindrical shell of right driver is fixed on the other end of moving mass through securing member; Be provided with linear bearing at circular cylindrical shell inner chamber blind end, mutually near spring and mass place the linear bearing inner chamber; The other end at the circular cylindrical shell inner chamber is provided with the cylinder that cooperates with inner chamber, and the blind end of cylinder is near linear bearing, and the open end of cylinder is provided with end cap, and the inner chamber of cylinder is provided with the coil rack that coil is installed; The central slide of coil rack cooperates installs giant magnetostrictive rod, and the bottom outlet that an end of giant magnetostrictive rod passes cylinder withstands mass, and the centre bore that the other end of giant magnetostrictive rod passes end cap withstands moving mass; Said coil is connected with power supply, and power supply is pressed the saw-tooth current signal to the coil output current.Said giant magnetostrictive rod is processed by rare earth ultra-magnetostriction material Terfenol-D.
After the coil of left side driver is switched on by saw-tooth current signal shown in Figure 4; Produce magnetic field; Giant magnetostrictive rod, cylinder, end cap are magnetic conductive material and form closed magnetic circuit, cause giant magnetostrictive rod moment generation elongation strain, thereby promote mass fast to left movement; Because the effect of inertia impact, moving mass is pushed to right motion together with whole inertia impact miniature linear.If after the coil of right driver was switched on by saw-tooth current signal shown in Figure 4, then moving mass was pushed to left movement together with whole inertia impact miniature linear by inertia.
Spring provides certain precompression, can eliminate the gap.Simultaneously, the electric current on coil reduces, and when giant magnetostrictive rod shortened, spring forced the mass return, and mass is closely contacted with giant magnetostrictive rod all the time.The effect of linear bearing is the resistance when reducing the mass motion; Moving mass, circular cylindrical shell, coil rack, mass, guide rail are the non-magnetic material.
The invention has the beneficial effects as follows:
1, rare earth ultra-magnetostriction material is a kind of new function material, can realize the conversion of electromagnetic energy and mechanical energy effectively, has that deflection is big, power output is big, energy density is big, electromechanical coupling factor is big, response speed is fast, the characteristics of low voltage drive;
2, compare with existing piezoelectric type inertia impact miniature linear, the ability that the present invention drives load is strong, speed fast, low voltage drive;
The present invention have that range of movement is big, resolution can reach nanoscale, simple in structure, advantage that parts are Miniaturized, and can when carrying out step motion, realize accurately locating.Can obtain extensive use in fields such as bioengineering, miniature parts operation and assembling, robot and medicine equipments.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the saw-tooth current signal schematic representation of power supply to the coil output current.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment is shown in accompanying drawing 1-4: a kind of magnetostriction type inertia impact miniature linear; Form by guide rail, left driver, moving mass and right driver; Said guide rail is that two ends are fixed on two poles 6 arranged side by side on the base 11; Said moving mass 5 is big, the middle little cylinder combinations in two ends, and moving mass 5 is slidingly matched and is placed on two poles 6 arranged side by side, and the structure of said left driver and right driver is identical; The circular cylindrical shell 1 of left side driver is fixed on an end of moving mass 5 through securing member, and the circular cylindrical shell 1 of right driver is fixed on the other end of moving mass 5 through securing member; Be provided with linear bearing 10 at circular cylindrical shell 1 inner chamber blind end, mutually near spring 12 place linear bearing 10 inner chambers with mass 2; The other end at circular cylindrical shell 1 inner chamber is provided with the cylinder 4 that cooperates with inner chamber, and the blind end of cylinder 4 is near linear bearing 10, and the open end of cylinder 4 is provided with end cap 7, and the inner chamber of cylinder 4 is provided with the coil rack 8 that coil 9 is installed; The central slide of coil rack 8 cooperates installs the giant magnetostrictive rod of being processed by rare earth ultra-magnetostriction material Terfenol-D 3; The bottom outlet that one end of giant magnetostrictive rod 3 passes cylinder 4 withstands mass 2, and the centre bore that the other end of giant magnetostrictive rod 3 passes end cap 7 withstands moving mass 5.Coil 9 is connected with power supply, and power supply is pressed saw-tooth current signal shown in Figure 4 to coil (9) output current.
After the coil of left side driver is switched on by saw-tooth current signal shown in Figure 4; Produce magnetic field; Giant magnetostrictive rod 3, cylinder 4, end cap 7 are magnetic conductive material and form closed magnetic circuit, cause giant magnetostrictive rod 3 moments generation elongation strain, thereby promote mass 2 fast to left movement; Because the effect of inertia impact, moving mass 5 is pushed to right motion together with whole magnetostriction type inertia impact miniature linear.If after the coil of right driver was switched on by saw-tooth current signal shown in Figure 4, then moving mass 5 was pushed to left movement together with whole magnetostriction type inertia impact miniature linear.
Claims (2)
1. magnetostriction type inertia impact miniature linear; It is characterized in that: magnetostriction type inertia impact miniature linear is made up of guide rail, left driver, moving mass and right driver; Said guide rail is that two ends are fixed on upward two poles (6) arranged side by side of base (11); Said moving mass (5) is big, the middle little cylinder combinations in two ends; Moving mass (5) is slidingly matched and is placed on two poles (6) arranged side by side; The structure of said left driver and right driver is identical, and the circular cylindrical shell of left driver (1) is fixed on an end of moving mass (5) through securing member, and the circular cylindrical shell of right driver (1) is fixed on the other end of moving mass (5) through securing member; Be provided with linear bearing (10) at circular cylindrical shell (1) inner chamber blind end, mutually near spring (12) and mass (2) place linear bearing (10) inner chamber; The other end at circular cylindrical shell (1) inner chamber is provided with the cylinder (4) that cooperates with inner chamber; The blind end of cylinder (4) is near linear bearing (10); The open end of cylinder (4) is provided with end cap (7), and the inner chamber of cylinder (4) is provided with the coil rack (8) that coil (9) is installed; The central slide of coil rack (8) cooperates installs giant magnetostrictive rod (3); The bottom outlet that one end of giant magnetostrictive rod (3) passes cylinder (4) withstands mass (2), and the centre bore that the other end of giant magnetostrictive rod (3) passes end cap (7) withstands moving mass (5); Said coil (9) is connected with power supply, and power supply is pressed the saw-tooth current signal to coil (9) output current.
2. a kind of magnetostriction type inertia impact miniature linear according to claim 1, it is characterized in that: said giant magnetostrictive rod (3) is processed by rare earth ultra-magnetostriction material Terfenol-D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010612116 CN102005964B (en) | 2010-12-29 | 2010-12-29 | Magnetostriction type inertial impact micro linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010612116 CN102005964B (en) | 2010-12-29 | 2010-12-29 | Magnetostriction type inertial impact micro linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005964A CN102005964A (en) | 2011-04-06 |
| CN102005964B true CN102005964B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010612116 Expired - Fee Related CN102005964B (en) | 2010-12-29 | 2010-12-29 | Magnetostriction type inertial impact micro linear motor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118119A (en) * | 2011-04-08 | 2011-07-06 | 南昌工程学院 | Precision linear motor with giant magnetostrictive rare earth rod as drive source |
| CN103684040B (en) * | 2013-12-23 | 2016-02-03 | 南昌工程学院 | Magnetostrictive inertial impact rotating driver |
| CN113078844B (en) * | 2021-04-21 | 2022-03-29 | 吉林大学 | Device and method for expanding inertia force to improve performance of piezoelectric actuator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2369489B (en) * | 2000-11-23 | 2004-03-10 | Khaled Karrai | Inertial rotation device |
| JP2002315369A (en) * | 2001-04-13 | 2002-10-25 | Nec Corp | Actuator, optical fiber moving body and optical switch |
| JP2003309984A (en) * | 2002-04-12 | 2003-10-31 | Mitsuba Corp | Rotationally driving actuator |
| CN2886610Y (en) * | 2006-03-30 | 2007-04-04 | 天津三星电机有限公司 | Focusing mechanism for cam of mobile phone |
| CN101753056B (en) * | 2008-12-15 | 2013-01-09 | 财团法人工业技术研究院 | Piezoelectric motor |
| CN201918919U (en) * | 2010-12-29 | 2011-08-03 | 南昌工程学院 | Magnetostrictive inertial-impact micro linear motor |
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| CN102005964A (en) | 2011-04-06 |
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Granted publication date: 20121024 Termination date: 20161229 |