CN104607378B - Magnetorheological fluid vibration excitation device for vibration machining - Google Patents
Magnetorheological fluid vibration excitation device for vibration machining Download PDFInfo
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- CN104607378B CN104607378B CN201410709227.3A CN201410709227A CN104607378B CN 104607378 B CN104607378 B CN 104607378B CN 201410709227 A CN201410709227 A CN 201410709227A CN 104607378 B CN104607378 B CN 104607378B
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Abstract
The invention discloses a magnetorheological fluid vibration excitation device for vibration machining. The magnetorheological fluid vibration excitation device comprises a vibration excitation cylinder, a magnetorheological fluid hydraulic system and a vibration exciter working condition monitoring system. The vibration excitation cylinder comprises a vibration excitation cylinder body, an installation base plate, an electromagnetic coil and a vibration excitation end cover. The magnetorheological fluid hydraulic system comprises a magnetorheological fluid tank, a filter, an oil pump, a motor, a one-way valve, an overflow valve, an oil pressure gauge, a manual ball valve, an unloading valve and a temperature gauge. The vibration excitation working condition monitoring system comprises an ultrasonic power source, a laser displacement sensor, a sensor support, a pre-amplifier, a converter board, a data collection card and an industrial personal computer. According to the magnetorheological fluid vibration excitation device, the vibration excitation frequency can be greatly improved, and the equipment structure is simple; the working condition monitoring device is arranged, the vibration excitation amplitude and frequency can be monitored in real time, and the vibration excitation amplitude and frequency can be conveniently and rapidly adjusted.
Description
Technical field:
The present invention relates to a kind of magnetic flow liquid high frequency phase transformation exciting device, particularly relate to a kind of vibration machining with magnetorheological
Liquid exciting device and method.
Technical background:
Vibrator is attached in some plant equipment in order to produce the device of exciting force, is the important of generation mechanical vibration
Parts.Vibrator can make to be swashed object and obtain certain forms and the vibration of intensity, be widely used to automobile, Aero-Space,
Shake vibration simulation, Mechatronic Systems and parts performance thereof and fatigue life test, and utilize vibration to realize mechanical packing, to break
Rock, pressure road, hole and exploration etc..Existing all kinds of vibration exciting device, is divided into mechanical type, electronic according to the difference of exciting form
Formula, fluid pressure type, the electroluminescent or form such as magnetostrictive effect formula and pneumatic type.All kinds of exciting devices differ from one another, and meet different machine
The demand of tool equipment.
Mechanical type vibrator is broadly divided into centrifugal and direct acting type two class.The frequency range of centrifugal vibrator is general
Being 5～100Hz, load is 50～10000N, and the frequency range of direct acting type vibrator is 1～200Hz, available the biggest
Thrust and bigger vibration amplitude.This kind of vibrating device simple in construction, low cost, but upper limiting frequency is relatively low, is widely used in each
Plant low-frequency vibration occasion.And for example, Patent No. CN200710098800.1 (Authorization Notice No. CN101043172A, Granted publication
Days 2007 on JIUYUE 26) disclose a kind of electromagnetic exciter.This invention mainly includes upper cover, permanent magnet, magnetic core, solenoid, lid
Plate, rubber cushion, base, oscillating drive link.When solenoid no power, permanent magnet attracts oscillating drive link, when passing through in solenoid
When alternating current, the permanent magnet captivation size to oscillating drive link will be changed, thus cause vibration under magneticaction
Vibration of bar, frequency of vibration changes along with the frequency of alternating current.This inventive structure is simple, but by intrinsic magnetically saturated limit
System, is difficult to obtain big exciting force and frequency of vibration, and amplitude shift is limited.The patent No. 200910100830.0 (Authorization Notice No.
CN101608965B, authorized announcement date on February 9th, 2011) disclose a kind of single-screw hydraulic cylinder electrohydraulic vibration exciter.This invention bag
Include 2D electrohydraulic excitation valve, asymmetric servo cylinder and loading object, use Spool rotating and axial two-degree-of-freedom to form.In control
In valve processed, spool is rotated by driven by servomotor so that the groove uniformly offered along spool land circumference and the window phase on valve pocket
The valve port area size coordinated becomes cyclically-varying, so that the flow of the bigger cavity volume of liquid in-out pressure cylinder piston face area
Size and the change of direction generating period, drive hydraulic actuator list rod hydraulic stem to do periodically reciprocating motion, enter
And drive the loading object being connected with single rod hydraulic stem piston rod to do and vibrate back and forth.This invention can increase substantially electro-hydraulic sharp
Vibration frequency, but structure is complex.
Magnetic flow liquid is an important branch of current intellectual material research, is also that one has development prospect and engineering should
With the brand-new material being worth.Magnetic flow liquid is mainly made up of magnetic particle, carrier fluid and three parts of additive.Magnetic flow liquid is at magnetic
Effect under can produce obvious magnetic rheology effect, between liquid and solid-state, i.e. carry out the conversion of Rapid reversible, this turn
Change is to complete within the time of millisecond magnitude.In this process, the viscosity of magnetic flow liquid keeps continuously, and stepless change is whole
Conversion process is exceedingly fast, and controlled energy consumption is minimum, can realize the most actively controlling.Along with the raising of magnetorheological fluid performance and research
Development, magnetic converting technique starts to be applied to Aero-Space, mechanical engineering, automobile engineering, Precision Machining engineering, control the necks such as engineering
Territory.In following decades, magnetic flow liquid and magnetorheological device have the biggest market prospect.Therefore, a kind of magnetic is worked out
Rheology liquid vibrator has important meaning.
Summary of the invention:
The present invention is based on the relatively low technical barrier of existing hydraulic vibration exciter excited frequency, it is provided that a kind of vibration machining magnetic
Rheology liquid exciting device.This invention is a kind of energy-changing method that the vibration of high-frequency alternating electromagnetic field is converted into mechanical vibration；It is one
Kind utilize and to close magnetic flow liquid in cavity volume under action of alternating magnetic field, produce solid-liquid change in volume, thus the method for excited vibrational；
It is that one utilizes solid-liquid phase change to cause the vibration of volume dilation, and carries out the method for oscillating of luffing amplification；It is sharp to be that one has
Shake cylinder, jib lubbing mechanism and the device of magnetic flow liquid liquid-supplying system；It is that one has vibrator operating mode (exciting amplitude and frequency adjustment
Deng) device that monitors.
A kind of vibration machining magnetic flow liquid exciting device, including exciting cylinder, magnetic flow liquid hydraulic system, vibrator operating mode
Monitoring system；
Described exciting cylinder includes exciting cylinder body, mounting base, solenoid, exciting end cap；Solenoid is surrounded on sharp
Shake cylinder body lateral surface, and exciting end cap is bolted with exciting cylinder body, and exciting cylinder body is bolted and is installed on the installation end
On plate；
Described magnetic flow liquid hydraulic system include magnetic flow liquid case, filter, oil pump, motor, check valve, overflow valve,
Oil gauge, manual ball valve, unloader, thermometer；Magnetic flow liquid case is connected with filter inlet by pipeline, and filter outlet leads to
Crossing pipeline to be connected with the import of oil pump, driven by motor oil pump operates；Fuel pump outlet is connected with check valve inlet by oil pipe, unidirectional
The import of valve outlet port and overflow valve, the import of manual ball valve, the import of unloader communicate, the outlet of overflow valve, the going out of unloader
Mouth is connected with magnetic flow liquid case by pipeline, and manual ball valve outlet is connected by the import of pipeline with exciting cylinder body, and oil gauge sets
Putting the import at overflow valve, thermometer is arranged in magnetic flow liquid case；
Described vibrator work condition inspection system includes ultrasonic power, laser displacement sensor, sensor stand, preposition
Amplifier, change-over panel, data collecting card and industrial computer；Ultrasonic power is connected with solenoid, laser displacement sensor spiral shell
Bolt is installed on sensor stand platform, and is directed at test side outside exciting end cap, and sensor stand passes through with mounting base
Bolt connects fixing；Laser displacement sensor is connected with the signal input port of preamplifier, the outfan of preamplifier
Mouth is connected with the analog input Wiring port of change-over panel, and change-over panel is connected with data collecting card by cable, data collecting card
It is connected with industrial computer by PCI slot.
Beneficial effect:
1, the present invention utilize closing cavity volume in magnetic flow liquid produces under action of alternating magnetic field solid-liquid phase change initiation volume swollen
Swollen contraction, thus excited vibrational；
2, the present invention can not only be greatly improved excited frequency, and device structure is relatively simple；
3, the present invention has operation situation monitoring device, it is possible to monitor exciting amplitude and frequency in real time, and can be fast
Speed adjusts exciting amplitude and frequency easily.
Accompanying drawing explanation
Fig. 1 is magnetic flow liquid vibrator；
Fig. 2 is exciting cylinder frame for movement top view；
Fig. 3 is exciting cylinder frame for movement sectional view.
Specific embodiments:
Below in conjunction with the accompanying drawings, this patent is further described.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of vibration machining magnetic flow liquid exciting device, including exciting cylinder, magnetic flow liquid
Hydraulic system, vibrator work condition inspection system.
Described exciting cylinder includes exciting cylinder body 9, mounting base 10, solenoid 13, exciting end cap 14.Solenoid 13
Being surrounded on exciting cylinder body 9 lateral surface, exciting end cap 14 is bolted with exciting cylinder body 9, and exciting cylinder body 9 is bolted
It is installed on mounting base 10；
Described magnetic flow liquid hydraulic system includes magnetic flow liquid case 1, filter 2, oil pump 3, motor 4, check valve 5, overflows
Stream valve 6, oil gauge 7, manual ball valve 8, unloader 20, thermometer 21.Magnetic flow liquid case 1 is by pipeline and filter 2 entrance phase
Even, filter 2 is exported and is connected by the import of pipeline with oil pump 3, and motor 4 drives oil pump 3 to operate.Oil pipe is passed through in oil pump 3 outlet
Being connected with check valve 5 import, check valve 5 exports the import with overflow valve 6, the import of manual ball valve 8, the import phase of unloader 20
Logical, the outlet of overflow valve 6, the outlet of unloader 20 are connected with magnetic flow liquid case 1 by pipeline, and manual ball valve 8 exports by pipe
Road is connected with the import of exciting cylinder body 9, and oil gauge 7 is arranged on the import of overflow valve 6, and thermometer 21 is arranged on magnetic flow liquid case 1
In.
Described vibrator work condition inspection system includes ultrasonic power 16, laser displacement sensor 12, sensor stand
11, preamplifier 15, change-over panel 17, data collecting card 18 and industrial computer 19.Ultrasonic power 16 is connected with solenoid 13,
Laser displacement sensor 12 bolt is installed on sensor stand 11 platform, and is directed at test side outside exciting end cap 14,
Sensor stand 11 is bolted fixing with mounting base 10.Laser displacement sensor 12 and the signal of preamplifier 15
Input port connects, and the output port of preamplifier 15 is connected with the analog input Wiring port of change-over panel 17, change-over panel
17 are connected with data collecting card 18 by cable, and data collecting card 18 is connected with industrial computer 19 by PCI slot.
Opening manual ball valve, start oil pump and motor, magnetic flow liquid hydraulic system starts to supply in exciting cylinder magnetorheological
Liquid.Observe the registration of oil gauge, regulation relief valve, after Pressure gauge indicates some to specify numerical value, close oil pump and motor
And manual ball valve, now will maintain constant pressure in exciting cylinder.Open ultrasonic power, be provided with pulse electricity to solenoid
Stream so that the magnetic flow liquid in exciting cylinder is in alternating magnetic field.Under the effect of magnetic rheology effect, magnetic flow liquid will be in solid-state
And the conversion of Rapid reversible occurs between liquid, and meanwhile, the solid-liquid phase change of magnetic flow liquid can cause volume dilation to shake
Dynamic, thus cause the exciting of exciting end cap.The laser beam that laser displacement sensor is launched is anti-through exciting end cap outer surface
Be mapped on the detector of self, the difference of the light-beam position by sensing, can precisely measure out the amplitude of exciting end cap with
Frequency.The vibration signal that laser displacement sensor collects is after preamplifier amplifies, with analog input change-over panel, conversion
The analogue signal of input is carried out high-speed a/d conversion by plate and data collecting card, finally enters industrial computer.Change ultrasonic power
Output electric current, solenoid produce magnetic field also can change therewith, thus change exciting end cap amplitude and frequency.Close
After ultrasonic power, exciting end cap stops vibration, opens unloader and sheds the pressure of exciting cylinder interior.
Claims (1)
1. a vibration machining magnetic flow liquid exciting device, including exciting cylinder, magnetic flow liquid hydraulic system, vibrator operating mode prison
Ore-controlling Role；
It is characterized in that: described exciting cylinder includes exciting cylinder body, mounting base, solenoid, exciting end cap；Electromagnetic wire ring
Being around in exciting cylinder body lateral surface, exciting end cap is bolted with exciting cylinder body, and exciting cylinder body is bolted and is installed on
On mounting base；
Described magnetic flow liquid hydraulic system includes magnetic flow liquid case, filter, oil pump, motor, check valve, overflow valve, oil pressure
Table, manual ball valve, unloader, thermometer；Magnetic flow liquid case is connected with filter inlet by pipeline, and filter outlet is by pipe
Road is connected with the import of oil pump, and driven by motor oil pump operates；Fuel pump outlet is connected with check valve inlet by oil pipe, and check valve goes out
Mouthful communicate with the import of overflow valve, the import of manual ball valve, the import of unloader, the outlet of unloader by pipeline with magnetorheological
Liquid case is connected, and manual ball valve outlet is connected by the import of pipeline with exciting cylinder body, and oil gauge is arranged on the import of overflow valve, temperature
Degree meter is arranged in magnetic flow liquid case；
Described vibrator work condition inspection system includes ultrasonic power, laser displacement sensor, sensor stand, preposition amplification
Device, change-over panel, data collecting card and industrial computer；Ultrasonic power is connected with solenoid, and laser displacement sensor bolt is pacified
Being loaded on sensor stand platform, and be directed at test side outside exciting end cap, sensor stand and mounting base pass through bolt
Connect fixing；Laser displacement sensor is connected with the signal input port of preamplifier, the output port of preamplifier with
The analog input Wiring port of change-over panel connects, and change-over panel is connected with data collecting card by cable, and data collecting card passes through
PCI slot is connected with industrial computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410709227.3A CN104607378B (en) | 2014-11-28 | 2014-11-28 | Magnetorheological fluid vibration excitation device for vibration machining |
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| CN201410709227.3A CN104607378B (en) | 2014-11-28 | 2014-11-28 | Magnetorheological fluid vibration excitation device for vibration machining |
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| CN104607378B true CN104607378B (en) | 2017-01-11 |
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| CN111828439B (en) * | 2020-06-16 | 2022-08-09 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
| CN112213391B (en) * | 2020-10-15 | 2022-05-27 | 山东省交通科学研究院 | Nondestructive excitation inspection device for anchor rod |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086288A (en) * | 2006-06-06 | 2007-12-12 | 杜彦亭 | Controllable gas-liquid vibration damper |
| CN202301705U (en) * | 2011-11-03 | 2012-07-04 | 长春孔辉汽车科技有限公司 | A magnetorheological pump type variable damping vibration damper |
| CN103557264A (en) * | 2013-11-15 | 2014-02-05 | 重庆大学 | Condition monitoring based passive magneto rheological vibration damper |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06312158A (en) * | 1993-04-30 | 1994-11-08 | Matsui Mfg Co | Method and device for generating air vibration wave |
| US7849983B2 (en) * | 2006-05-01 | 2010-12-14 | Lord Corporation | Controllable vehicle suspension system with a controllable magnetorheological fluid strut |
| US9109654B2 (en) * | 2012-06-12 | 2015-08-18 | Inno Vital Systems, Inc. | Failsafe magnetorheological (MR) energy absorber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086288A (en) * | 2006-06-06 | 2007-12-12 | 杜彦亭 | Controllable gas-liquid vibration damper |
| CN202301705U (en) * | 2011-11-03 | 2012-07-04 | 长春孔辉汽车科技有限公司 | A magnetorheological pump type variable damping vibration damper |
| CN103557264A (en) * | 2013-11-15 | 2014-02-05 | 重庆大学 | Condition monitoring based passive magneto rheological vibration damper |
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Application publication date: 20150513 Assignee: Zhejiang Chengfeng Industrial Co.,Ltd. Assignor: HANGZHOU DIANZI University Contract record no.: X2021330000790 Denomination of invention: Magnetorheological fluid exciting device for vibration processing Granted publication date: 20170111 License type: Common License Record date: 20211213 |
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