CN1836796A - Excitation device - Google Patents

Excitation device Download PDF

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Publication number
CN1836796A
CN1836796A CN 200610050402 CN200610050402A CN1836796A CN 1836796 A CN1836796 A CN 1836796A CN 200610050402 CN200610050402 CN 200610050402 CN 200610050402 A CN200610050402 A CN 200610050402A CN 1836796 A CN1836796 A CN 1836796A
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CN
China
Prior art keywords
coil
inner sleeve
base
coil rack
outer sleeve
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.)
Granted
Application number
CN 200610050402
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Chinese (zh)
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CN100548511C (en
Inventor
任耀新
何闻
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Zhejiang University ZJU
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Zhejiang University ZJU
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Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CNB2006100504028A priority Critical patent/CN100548511C/en
Publication of CN1836796A publication Critical patent/CN1836796A/en
Application granted granted Critical
Publication of CN100548511C publication Critical patent/CN100548511C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The exciter includes a pedestal, a coaxial coil skeleton, an AC coil, a DC coil, an inner sleeve, spring and an outer sleeve. The coil skeleton is fixed onto the pedestal via its central hole, and inside the central, there are one super magnetostrictive rod and one locating block, which has one end contacting to the super magnetostrictive rod and the other end set inside the central locating notch of the inner sleeve. When the exciter is used, the workpiece is fixed onto the pedestal or the inner sleeve bottom of the exciter, and the super magnetostrictive rod in the mixed magnetic field of the AC coil and the DC coil will produce axial strictive deformation with the changing AC current to drive the locating block and the inner sleeve to vibration axially in high frequency reciprocally. The exciter has simple structure, good heat dissipating performance, changeable vibration frequency in 1000-3000 Hz and less fatigue damage of the workpiece.

Description

A kind of exciting device
Technical field
The present invention relates to a kind of exciting device, especially in vibration ageing device, be used to produce the exciting device of dither.
Background technology
Elimination tool member residual stress is an important topic in the machine building industry technology.Oscillating aging (VSR) is eliminated the residual stress technology and is had characteristics such as equipment is simple, small investment, energy-conserving and environment-protective, processing time weak point.
Existing and ripe typical vibration ageing device is made of vibrator, vibration parameters controller and vibration-measuring sensor both at home and abroad at present.Wherein exciting device generally is made up of eccentric casing, high speed direct current generator and high-precision revolution speed control system, and swept frequency range is 2000-10000r/min (33.3-166.7Hz), and vibration frequency is relatively low, and amplitude is bigger, makes the workpiece fatigue damage easily.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, the exciting device of a kind of vibration frequency higher (1000-3000Hz) is provided.
The exciting device of invention comprises base, the coil rack of outside coaxial line device from the lining, AC coil, dc coil, inner sleeve, spring and outer sleeve, coil rack has centre bore and several axial holes that are used to cool off, both ends of the surface at coil rack have the evagination annulus respectively, be provided with the circular passage in the evagination annulus, the circular passage is connected with axial hole, circumferentially respectively be fastened with the copper hoop at two evagination annulus, have the water inlet that is connected with the circular passage on the copper hoop, have the delivery port that is connected with the circular passage on another copper hoop, the centre bore of coil rack places on the positioning boss of base, and it is fastening with base, inner sleeve is the inversion cup-shaped, be enclosed within outside the coil rack that is wound with AC coil and dc coil, openend at inner sleeve has the evagination ring surface, wall has and water inlet or the corresponding hole of delivery port, one end of said outer sleeve is fixed on the base, the other end has the convex ring surface, the both ends of the surface that are enclosed within the spring on the inner sleeve offset with the evagination ring surface of inner sleeve and the convex ring surface of outer sleeve respectively, the wall of outer sleeve has and delivery port or the corresponding hole of water inlet, centre bore at coil rack is built-in with giant magnetostrictive rod and cylindrical locating piece, one end of locating piece contacts with giant magnetostrictive rod, and the other end places in the centralized positioning shrinkage pool of inner sleeve bottom surface.
Its operation principle is as follows:
Workpiece is fixed on the bottom surface of the base or the inner sleeve of exciting device, and AC coil and dc coil are connected AC power and dc source respectively, feed cooling water in the cooling duct of coil rack.Giant magnetostrictive rod is in the mixed magnetic field of AC coil and dc coil generation, the magnetic field that AC power produces makes giant magnetostrictive rod carry out the axial stretching distortion in the range of linearity, and the magnetic field that dc source produces guarantees that magnetostrictive rod is operated in the range of linearity.Along with the variation that feeds the alternating current size, giant magnetostrictive rod produces dilatation vertically, promote locating piece and inner sleeve reciprocal vertically dither in outer sleeve,, the power output of exciting device is affacted on the workpiece according to inertia and active force and reaction force principle.And the closed magnetic circuit that locating piece, base, outer sleeve, giant magnetostrictive rod and breath constitute has prevented leakage field, also can not interact with outside workpiece and equipment.
Beneficial effect of the present invention is:
Exciting device of the present invention is simple in structure, thermal diffusivity is good, can realize dither easily by the frequency that changes AC power, vibration frequency can reach 1000-3000Hz, this device is used for oscillating aging, can make the macroscopic deformation amount of test specimen very little, effectively prevent the generation and the development of workpiece fatigue crack, be difficult for making workpiece to produce fatigue damage.
Description of drawings
Fig. 1 is the structural representation of exciting device of the present invention;
Fig. 2 is the coil rack enlarged drawing.
The specific embodiment
Describe the present invention in conjunction with the accompanying drawings respectively below.
With reference to Fig. 1, Fig. 2, the exciting device of invention comprises base 1, the coil rack 5 of outside coaxial line device from the lining, AC coil 10, dc coil 9, inner sleeve 4, spring 2 and outer sleeve 3, coil rack 5 has centre bore and several axially extending bores that are used to cool off 8, in the diagram instantiation, have the axially extending bore of 8 Φ 3, the two ends of 8 axially extending bores seal with rubber nut 13 respectively, both ends of the surface at coil rack 5 have evagination annulus 5-1 respectively, be provided with circular passage 14 in the evagination annulus, circular passage 14 is connected with axially extending bore 8, circumferentially respectively be fastened with copper hoop 11 at two evagination annulus 5-1, in the legend, have the water inlet 12 that is connected with circular passage 14 on the superincumbent copper hoop 11, have the delivery port 15 that is connected with circular passage 14 on the copper hoop 11 below, constituted a closed chilled(cooling) water return (CWR), this type of cooling can directly sponge heat internally, is beneficial to the job stability and the service life of improving device.The centre bore of coil rack 5 places on the positioning boss of base 1, and fastening with base 1, and inner sleeve 4 is the inversion cup-shaped, is enclosed within outside the coil rack 5 that is wound with AC coil 10 and dc coil 9, and 10 of dc coil 9 and AC coils have insulating barrier to separate.Openend at inner sleeve 4 has evagination ring surface 4-1, wall has and water inlet 12 corresponding hole 4-2, one end of said outer sleeve 3 is fixed on the base 1, the other end has convex ring surface 3-1, the both ends of the surface that are enclosed within the spring 2 on the inner sleeve 4 offset with the evagination ring surface 4-1 of inner sleeve 4 and the convex ring surface 3-1 of outer sleeve 3 respectively, and the wall of outer sleeve 3 has and delivery port 15 corresponding hole 3-2.Centre bore at coil rack 5 is built-in with giant magnetostrictive rod 7 and cylindrical locating piece 6, and an end of locating piece 6 contacts with giant magnetostrictive rod 7, and the other end places in the centralized positioning shrinkage pool of inner sleeve 4 bottom surfaces.
Usually, outer sleeve 3 is tightened by screw thread be fixed on the base 1, so that regulate the precompression of giant magnetostrictive rod 7.

Claims (2)

1. exciting device, it is characterized in that comprising base (1), the coil rack of outside coaxial line device (5) from the lining, AC coil (10), dc coil (9), inner sleeve (4), spring (2) and outer sleeve (3), coil rack (5) has centre bore and several axial holes that are used to cool off (8), both ends of the surface at coil rack (5) have evagination annulus (5-1) respectively, be provided with circular passage (14) in the evagination annulus, circular passage (14) is connected with axial hole (8), circumferentially respectively be fastened with copper hoop (11) at two evagination annulus (5-1), have the water inlet (12) that is connected with circular passage (14) on the copper hoop (11), have the delivery port (15) that is connected with circular passage (14) on another copper hoop (11), the centre bore of coil rack (5) places on the positioning boss of base (1), and it is fastening with base (1), inner sleeve (4) is the inversion cup-shaped, be enclosed within outside the coil rack (5) that is wound with AC coil (10) and dc coil (9), openend at inner sleeve (4) has evagination ring surface (4-1), wall has and water inlet (12) or the corresponding hole of delivery port (15) (4-2), one end of said outer sleeve (3) is fixed on the base (1), the other end has convex ring surface (3-1), the both ends of the surface that are enclosed within the spring (2) on the inner sleeve (4) offset with the evagination ring surface (4-1) of inner sleeve (4) and the convex ring surface (3-1) of outer sleeve (3) respectively, the wall of outer sleeve (3) has and delivery port (15) or the corresponding hole of water inlet (12) (3-2), centre bore at coil rack (5) is built-in with giant magnetostrictive rod (7) and cylindrical locating piece (6), one end of locating piece (6) contacts with giant magnetostrictive rod (7), and the other end places in the centralized positioning shrinkage pool of inner sleeve (4) bottom surface.
2. exciting device according to claim 1, an end that it is characterized in that outer sleeve (3) is tightened by screw thread and is fixed on the base (1).
CNB2006100504028A 2006-04-18 2006-04-18 A kind of exciting device Expired - Fee Related CN100548511C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100504028A CN100548511C (en) 2006-04-18 2006-04-18 A kind of exciting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100504028A CN100548511C (en) 2006-04-18 2006-04-18 A kind of exciting device

Publications (2)

Publication Number Publication Date
CN1836796A true CN1836796A (en) 2006-09-27
CN100548511C CN100548511C (en) 2009-10-14

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CNB2006100504028A Expired - Fee Related CN100548511C (en) 2006-04-18 2006-04-18 A kind of exciting device

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CN (1) CN100548511C (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865755A (en) * 2010-06-09 2010-10-20 苏州东菱振动试验仪器有限公司 Vibrating table short circuit ring cooling structure and preparation method thereof
CN104180843A (en) * 2014-09-02 2014-12-03 浙江大学 Moving coil of angular vibration table
CN104180842A (en) * 2014-09-02 2014-12-03 浙江大学 Broadband large-displacement angular vibration table
CN104180844A (en) * 2014-09-02 2014-12-03 浙江大学 Solenoid drive type angular vibration table
CN105352692A (en) * 2015-12-17 2016-02-24 苏州东菱振动试验仪器有限公司 Water cooling short circuit ring structure used for electric vibrating table
CN107790714A (en) * 2017-10-12 2018-03-13 浙江大学 A kind of assisting demolding device in powder pressing technique
CN109549458A (en) * 2017-09-25 2019-04-02 佛山市顺德区美的电热电器制造有限公司 Cooking apparatus and its mangneto driving source
CN111013997A (en) * 2019-11-05 2020-04-17 河南开炜公路工程试验检测有限公司 Excitation source device for monitoring resonance frequency of box girder of viaduct and driving method
CN111850877A (en) * 2018-03-14 2020-10-30 南通全技纺织涂层有限公司 Working method of coating and scraping mechanism combining piezomagnetic effect and magnetostriction principle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865755A (en) * 2010-06-09 2010-10-20 苏州东菱振动试验仪器有限公司 Vibrating table short circuit ring cooling structure and preparation method thereof
CN104180843A (en) * 2014-09-02 2014-12-03 浙江大学 Moving coil of angular vibration table
CN104180842A (en) * 2014-09-02 2014-12-03 浙江大学 Broadband large-displacement angular vibration table
CN104180844A (en) * 2014-09-02 2014-12-03 浙江大学 Solenoid drive type angular vibration table
CN104180844B (en) * 2014-09-02 2017-04-12 浙江大学 Solenoid drive type angular vibration table
CN105352692A (en) * 2015-12-17 2016-02-24 苏州东菱振动试验仪器有限公司 Water cooling short circuit ring structure used for electric vibrating table
CN105352692B (en) * 2015-12-17 2018-07-31 苏州东菱振动试验仪器有限公司 A kind of water cooling short-circuit ring structure for electric vibration table
CN109549458B (en) * 2017-09-25 2021-05-25 佛山市顺德区美的电热电器制造有限公司 Cooking utensil and magnetic excitation source thereof
CN109549458A (en) * 2017-09-25 2019-04-02 佛山市顺德区美的电热电器制造有限公司 Cooking apparatus and its mangneto driving source
CN107790714A (en) * 2017-10-12 2018-03-13 浙江大学 A kind of assisting demolding device in powder pressing technique
CN111850877A (en) * 2018-03-14 2020-10-30 南通全技纺织涂层有限公司 Working method of coating and scraping mechanism combining piezomagnetic effect and magnetostriction principle
CN111850877B (en) * 2018-03-14 2021-08-24 南通全技纺织涂层有限公司 Working method of coating and scraping mechanism combining piezomagnetic effect and magnetostriction principle
CN111013997A (en) * 2019-11-05 2020-04-17 河南开炜公路工程试验检测有限公司 Excitation source device for monitoring resonance frequency of box girder of viaduct and driving method
CN111013997B (en) * 2019-11-05 2021-10-12 河南开炜公路工程试验检测有限公司 Excitation source device for monitoring resonance frequency of box girder of viaduct and driving method

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