CN102118119A - Precision linear motor with giant magnetostrictive rare earth rod as drive source - Google Patents
Precision linear motor with giant magnetostrictive rare earth rod as drive source Download PDFInfo
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- CN102118119A CN102118119A CN2011100868665A CN201110086866A CN102118119A CN 102118119 A CN102118119 A CN 102118119A CN 2011100868665 A CN2011100868665 A CN 2011100868665A CN 201110086866 A CN201110086866 A CN 201110086866A CN 102118119 A CN102118119 A CN 102118119A
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- hollow slide
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- linear motor
- precision linear
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Abstract
The invention relates to a precision linear motor with a giant magnetostrictive rare earth rod as a drive source. A coil frame provided with an electromagnetic coil is mounted in a cylinder casing with a sealed end, a cylinder end cover is arranged in an open end of the cylinder casing, and the cylinder casing is fixed on a motor table; a hollow slide shaft is mounted in an internal cavity of the coil frame in a sliding fit manner; the giant magnetostrictive rare earth rod, a mass block and a spring are mounted in an internal cavity of the hollow slide shaft; and a power source outputs continuous sawtooth current to the electromagnetic coil and generates a continuous pulse drive force. The precision linear motor converts electromagnetic energy into mechanical energy, and has the advantages of great driving ability, fast speed, long journey and precise positioning. In the precision linear motor, the components including the cylinder casing, the cylinder end cover, the coil, the frame and a power-supply cable are all fixed, so as not to cause energy loss and interference to the hollow slide shaft generating linear motion and parts in the internal cavity of the hollow slide shaft. The motion stability and the efficiency of the precision linear motor are high.
Description
Technical field
The present invention relates to a kind of precision electric motor, particularly a kind of rareearth super magnetostrictive rod is the accurate linear electric motors of drive source.
Background technology
The inertia impact motor is to utilize inertia impact to realize a kind of driving mechanism of accurate displacement, and it has, and range of movement is big, displacement resolution is high, advantage of simple structure, and can realize accurately location when carrying out step motion.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 linear electric motors generally adopt piezoelectric to drive, and are to utilize the quick distortion of piezoelectric when switching on rapidly to produce inertia impact, form a kind of driving mechanism that driving force realizes accurate displacement then.But because the deficiency that piezoelectric exists that deflection is little, power density is little, high voltage drive, electrode easily puncture, cause that existing piezoelectric type inertia impact linear electric motors exist that movement velocity is slow, load capacity is weak, the problem of high voltage drive, poor reliability, thereby use and be restricted.
Application number is that 201010612116.2 patent of invention discloses a kind of magnetostriction type inertia impact miniature linear, it is being with coil to move together, in the moving process, the deadweight of power cable and vibration produce larger interference to the kinematic accuracy of inertia impact linear electric motors, and stability is relatively poor during motion.In addition, parts such as circular cylindrical shell move together, cause energy loss, reduce the efficient of linear electric motors.
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 rareearth super magnetostrictive of low voltage drive rod is the accurate linear electric motors of drive source.
Technical scheme of the present invention is: a kind of rareearth super magnetostrictive rod is the accurate linear electric motors of drive source, comprise in the circular cylindrical shell of the coil rack installation sealing at one end that is provided with solenoid, the open end of circular cylindrical shell is provided with the cylinder end cap, and rare earth ultra-magnetostriction material rod, mass and spring.Described circular cylindrical shell is fixed on the board motionless, and the hollow slide-bar is slidingly installed at the inner chamber of coil rack; Pack into the blind end of hollow slide-bar inner chamber of rare earth ultra-magnetostriction material rod matched in clearance, mass and spring are slidingly installed successively at the open end of hollow slide-bar, are provided with the slide-bar end cap near spring.Described solenoid is connected with power lead, and power supply is pressed the saw-tooth current signal to the solenoid output current.
Solenoid produces magnetic field by saw-tooth current signal energising back shown in Figure 2, the super giant magnetostrictive rod of rare earth, circular cylindrical shell, cylinder end cap are magnetic conductive material, form magnetic circuit, cause rareearth super magnetostrictive rod moment generation elongation strain, thereby promote mass fast to left movement; Because the effect of inertia impact, the hollow slide-bar is pushed to right motion, and continuous sawtooth current produces the consecutive pulses actuating force.Feed and reverse sawtooth current signal shown in Fig. 2, can realize that then the hollow slide-bar is continuously to left movement.
Spring provides certain precompression, can eliminate the gap.Simultaneously, the electric current on solenoid reduces, and during rareearth super magnetostrictive rod retraction, spring forces the mass return, and mass is closely contacted with the rareearth super magnetostrictive rod all the time.Hollow slide-bar, coil rack 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 linear electric motors, 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.
4, be that a kind of magnetostriction type inertia impact of patent of invention miniature linear of 201010612116.2 is compared with application number, circular cylindrical shell of the present invention, coil rack, solenoid and the power cable that is connected with solenoid all are fixed on the board motionless, can not cause energy loss and interference to rare earth ultra-magnetostriction material rod, mass and the spring that produces straight-line hollow slide-bar and be positioned at its inner chamber, stability of the present invention and efficient are higher.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the saw-tooth current signal schematic representation of power supply to the coil output current.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment is shown in accompanying drawing 1-2: a kind of rareearth super magnetostrictive rod is the accurate linear electric motors of drive source, and the coil rack 7 that is provided with solenoid 6 is installed in the circular cylindrical shell 5 of sealing at one end, and the open end of circular cylindrical shell 5 is provided with cylinder end cap 4; Described circular cylindrical shell 5 is fixed on the board 10 motionless, and hollow slide-bar 9 is slidingly installed at the inner chamber of coil rack 7; Pack into the blind end of hollow slide-bar 9 inner chambers of rare earth ultra-magnetostriction material rod 8 matched in clearance, mass 3 and spring 2 are slidingly installed successively at the open end of hollow slide-bar 9, are provided with slide-bar end cap 1 near spring 2.
Solenoid 6 is connected with power supply by cable, and power supply is pressed the saw-tooth current signal to solenoid 6 output currents.After solenoid 6 is switched on by saw-tooth current signal shown in Figure 2, produce magnetic field, the super giant magnetostrictive rod 8 of rare earth, circular cylindrical shell 5, cylinder end cap 4 are magnetic conductive material, form magnetic circuit, cause rareearth super magnetostrictive rod 8 moments generation elongation strain, thereby promote mass 3 fast to left movement; Because the effect of inertia impact, hollow slide-bar 9 is pushed to right motion, produces pulsed drive power.Feed and reverse sawtooth current signal shown in Fig. 2, can realize that then hollow slide-bar 9 is continuously to left movement.
Claims (1)
1. a rareearth super magnetostrictive rod is the accurate linear electric motors of drive source, comprise in the circular cylindrical shell (5) of coil rack (7) the installation sealing at one end that is provided with solenoid (6), the open end of circular cylindrical shell (5) is provided with cylinder end cap (4), and rare earth ultra-magnetostriction material rod (8), mass (3) and spring (2), it is characterized in that: it is upward motionless that described circular cylindrical shell (5) is fixed on board (10), and hollow slide-bar (9) is slidingly installed at the inner chamber of coil rack (7); Pack into the blind end of hollow slide-bar (9) inner chamber of rare earth ultra-magnetostriction material rod (8) matched in clearance, mass (3) and spring (2) are slidingly installed successively at the open end of hollow slide-bar (9), are provided with slide-bar end cap (1) near spring (2); Described solenoid (6) is connected with power lead, and power supply is pressed the saw-tooth current signal to solenoid (6) output current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100868665A CN102118119A (en) | 2011-04-08 | 2011-04-08 | Precision linear motor with giant magnetostrictive rare earth rod as drive source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100868665A CN102118119A (en) | 2011-04-08 | 2011-04-08 | Precision linear motor with giant magnetostrictive rare earth rod as drive source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102118119A true CN102118119A (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100868665A Pending CN102118119A (en) | 2011-04-08 | 2011-04-08 | Precision linear motor with giant magnetostrictive rare earth rod as drive source |
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| CN (1) | CN102118119A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145087A (en) * | 2013-03-14 | 2013-06-12 | 南昌工程学院 | Magnetostrictive composite cantilever beam driven by Terfenol-D sheets |
| CN105119519A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Terfenol-D-slice-based inertial impact linear driver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN101626202A (en) * | 2008-07-11 | 2010-01-13 | 杨锦堂 | Magnetostrictor actuator |
| CN201435693Y (en) * | 2009-07-01 | 2010-03-31 | 青岛佳普智能材料应用有限公司 | Electromagnet-ostriction actuator |
| CN102005964A (en) * | 2010-12-29 | 2011-04-06 | 南昌工程学院 | Magnetostriction type inertial impact micro linear motor |
-
2011
- 2011-04-08 CN CN2011100868665A patent/CN102118119A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101626202A (en) * | 2008-07-11 | 2010-01-13 | 杨锦堂 | Magnetostrictor actuator |
| CN201435693Y (en) * | 2009-07-01 | 2010-03-31 | 青岛佳普智能材料应用有限公司 | Electromagnet-ostriction actuator |
| CN102005964A (en) * | 2010-12-29 | 2011-04-06 | 南昌工程学院 | Magnetostriction type inertial impact micro linear motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145087A (en) * | 2013-03-14 | 2013-06-12 | 南昌工程学院 | Magnetostrictive composite cantilever beam driven by Terfenol-D sheets |
| CN103145087B (en) * | 2013-03-14 | 2015-09-09 | 南昌工程学院 | The magnetostriction type composite cantilever that Terfenol-D thin slice drives |
| CN105119519A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Terfenol-D-slice-based inertial impact linear driver |
| CN105119519B (en) * | 2015-09-02 | 2017-06-16 | 南昌工程学院 | Inertia impact linear actuator based on Terfenol D thin slices |
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Application publication date: 20110706 |