CN104607378A - Magnetorheological fluid vibration excitation device for vibration machining - Google Patents
Magnetorheological fluid vibration excitation device for vibration machining Download PDFInfo
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- CN104607378A CN104607378A CN201410709227.3A CN201410709227A CN104607378A CN 104607378 A CN104607378 A CN 104607378A CN 201410709227 A CN201410709227 A CN 201410709227A CN 104607378 A CN104607378 A CN 104607378A
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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 magnetic flow liquid exciting device and method.
Technical background:
Vibrator is attached in order to produce the device of exciting force in some plant equipment, is the vitals producing mechanical oscillation.Vibrator can make by the vibration swashing object acquisition certain forms and intensity, be widely used in automobile, Aero-Space, earthquake vibration simulation, Mechatronic Systems and parts performance thereof and fatigue life test, and utilize vibration to realize mechanical packing, broken rock, pressure road, boring and exploration etc.Existing all kinds of vibration exciting device, is divided into mechanical type, electrodynamic type, fluid pressure type, the electroluminescent or form such as magnetostrictive effect formula and pneumatic type according to the difference of exciting form.All kinds of exciting device differs from one another, and meets the demand of different plant equipment.
Mechanical type vibrator is mainly divided into centrifugal and direct acting type two class.The frequency range of centrifugal vibrator is generally 5 ~ 100Hz, and load is 50 ~ 10000N, and the frequency range of direct acting type vibrator is 1 ~ 200Hz, can obtain very large thrust and larger vibration amplitude.This kind of vibrating device structure is simple, cost is low, but upper limiting frequency is lower, is widely used in various low-frequency vibration occasion.And for example, the patent No. is that CN200710098800.1 (Authorization Notice No. CN101043172A, authorized announcement date on September 26th, 2007) discloses a kind of electromagnetic exciter.This invention mainly comprises upper cover, permanent magnet, magnetic core, solenoid, cover plate, rubber cushion, base, oscillating drive link.When solenoid no power, permanent magnet attracts oscillating drive link, in time passing through alternating current in solenoid, will change the attraction size of permanent magnet to oscillating drive link, thus vibration vibration of bar is caused under magneticaction, vibration frequency is along with the change of frequency of alternating current.This invention structure is simple, but is subject to intrinsic magnetically saturated restriction, not easily obtain large exciting force and vibration frequency, and amplitude shift is limited.The patent No. 200910100830.0 (Authorization Notice No. CN101608965B, authorized announcement date on February 9th, 2011) discloses a kind of single-screw hydraulic cylinder electrohydraulic vibration exciter.This invention comprises 2D electrohydraulic excitation valve, asymmetric servo cylinder and loading object, adopts Spool rotating and axial two-degree-of-freedom to form.In control valve, spool is rotated by driven by servomotor, the valve port area size that the groove evenly offered along spool land circumference is matched with the window on valve pocket becomes cyclically-varying, thus the uninterrupted of the cavity volume that liquid in-out pressure cylinder piston face area is larger and the change of direction generating period is made, drive hydraulic actuator list rod hydraulic stem to do periodic reciprocating motion, and then drive the loading object be connected with single rod hydraulic stem piston rod to do to vibrate back and forth.This invention can increase substantially electrohydraulic excitation frequency, but structure is comparatively complicated.
Magnetic flow liquid is an important branch of current intellectual material research, is also a kind of brand-new material with development prospect and engineer applied value.Magnetic flow liquid is primarily of magnetic particle, carrier fluid and additive three part composition.Magnetic flow liquid can produce obvious magnetic rheology effect under the influence of a magnetic field, namely liquid and solid-state between carry out the conversion of Rapid reversible, this conversion completes within the time of millisecond magnitude.In this process, the viscosity of magnetic flow liquid keeps continuously, and stepless change, whole conversion process is exceedingly fast, and controlled energy consumption is minimum, can realize real-time ACTIVE CONTROL.Along with the raising of magnetorheological fluid performance and the development of research, magnetic converting technique starts to be applied to the fields such as Aero-Space, mechanical engineering, automobile engineering, Precision Machining engineering, Control Engineering.In the decades in future, magnetic flow liquid and magnetorheological device have very large market prospects.Therefore, work out a kind of magnetic flow liquid vibrator and have important meaning.
Summary of the invention:
The present invention is based on the technical barrier that existing hydraulic vibration exciter excited frequency is lower, provide a kind of vibration machining magnetic flow liquid exciting device.This invention is a kind of energy-changing method vibration of high-frequency alternating electromagnetic field being converted into mechanical oscillation; That in the closed cavity volume of a kind of utilization, magnetic flow liquid produces solid-liquid Volume Changes under action of alternating magnetic field, thus the method for excited vibrational; Be that one utilizes solid-liquid phase change to cause the vibration of volume dilation, and carry out the method for oscillating of luffing amplification; It is a kind of device with exciting cylinder, jib lubbing mechanism and magnetic flow liquid liquid-supplying system; It is the device that one has vibrator operating mode (exciting amplitude and frequency adjustment etc.) and monitors.
A kind of vibration machining magnetic flow liquid exciting device, comprises exciting cylinder, magnetic flow liquid hydraulic system, vibrator work condition inspection system;
Described exciting cylinder comprises exciting cylinder body, mounting base, solenoid, exciting end cap; Solenoid is surrounded on exciting cylinder body lateral surface, and exciting end cap and exciting cylinder body are bolted, and exciting cylinder body is bolted and is installed on mounting base;
Described magnetic flow liquid hydraulic system comprises magnetic flow liquid case, filter, oil pump, motor, check valve, overflow valve, oil pressure gauge, manual ball valve, unloader, thermometer; Magnetic flow liquid case is connected with filter inlet by pipeline, and filter outlet is connected with the import of oil pump by pipeline, and driven by motor oil pump operates; Fuel pump outlet is connected with check valve inlet by oil pipe, the import of one-way valved outlet and overflow valve, the import of manual ball valve, the import of unloader communicate, the outlet of overflow valve, the outlet of unloader are connected with magnetic flow liquid case by pipeline, manual ball valve outlet is connected by the import of pipeline with exciting cylinder body, oil pressure gauge is arranged on the import of overflow valve, and thermometer is arranged in magnetic flow liquid case;
Described vibrator work condition inspection system comprises ultrasonic power, laser displacement sensor, sensor stand, preamplifier, change-over panel, data collecting card and industrial computer; Ultrasonic power is connected with solenoid, and laser displacement sensor bolt is installed on sensor stand platform, and is aimed at test side outside exciting end cap, and sensor stand and mounting base are bolted fixing; Laser displacement sensor is connected with the signal input port of preamplifier, the output port of preamplifier is connected with the analog input Wiring port of change-over panel, change-over panel is connected with data collecting card by cable, and data collecting card is connected with industrial computer by PCI slot.
Beneficial effect:
1, the present invention utilizes magnetic flow liquid in closed cavity volume under action of alternating magnetic field, produce solid-liquid phase change initiation volume dilation, thus excited vibrational;
2, the present invention significantly can not only improve excited frequency, and device structure is comparatively simple;
3, the present invention has operation situation monitoring device, can monitor in real time exciting amplitude and frequency, and can adjust exciting amplitude and frequency quickly and 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 accompanying drawing, 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, comprises exciting cylinder, magnetic flow liquid hydraulic system, vibrator work condition inspection system.
Described exciting cylinder comprises exciting cylinder body 9, mounting base 10, solenoid 13, exciting end cap 14.Solenoid 13 is surrounded on exciting cylinder body 9 lateral surface, and exciting end cap 14 and exciting cylinder body 9 are bolted, and exciting cylinder body 9 is bolted and is installed on mounting base 10;
Described magnetic flow liquid hydraulic system comprises magnetic flow liquid case 1, filter 2, oil pump 3, motor 4, check valve 5, overflow valve 6, oil pressure gauge 7, manual ball valve 8, unloader 20, thermometer 21.Magnetic flow liquid case 1 is connected with filter 2 entrance by pipeline, and 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 pump 3 is exported and is connected with check valve 5 import by oil pipe, check valve 5 exports and communicates with the import of overflow valve 6, the import of manual ball valve 8, the import of unloader 20, the outlet of overflow valve 6, the outlet of unloader 20 are connected with magnetic flow liquid case 1 by pipeline, manual ball valve 8 is exported and is connected by the import of pipeline with exciting cylinder body 9, oil pressure gauge 7 is arranged on the import of overflow valve 6, and thermometer 21 is arranged in magnetic flow liquid case 1.
Described vibrator work condition inspection system comprises 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, and laser displacement sensor 12 bolt is installed on sensor stand 11 platform, and is aimed at test side outside exciting end cap 14, and sensor stand 11 and mounting base 10 are bolted fixing.Laser displacement sensor 12 is connected with the signal input port of preamplifier 15, the output port of preamplifier 15 is connected with the analog input Wiring port of change-over panel 17, change-over panel 17 is connected with data collecting card 18 by cable, and data collecting card 18 is connected with industrial computer 19 by PCI slot.
Open manual ball valve, start oil pump and motor, magnetic flow liquid hydraulic system starts to supply magnetic flow liquid in exciting cylinder.Observe the registration of oil pressure gauge, regulation relief valve, after Pressure gauge is indicated to some appointment numerical value, closes oil pump and motor and manual ball valve, now will maintain constant pressure in exciting cylinder.Open ultrasonic power, be provided with pulse current to solenoid, the magnetic flow liquid in exciting cylinder is in alternating magnetic field.Under the effect of magnetic rheology effect, will there is the conversion of Rapid reversible in magnetic flow liquid between solid-state and liquid state, and meanwhile, the solid-liquid phase change of magnetic flow liquid can cause the vibration of volume dilation, thus causes the exciting of exciting end cap.The laser beam that laser displacement sensor is launched reflexes on the detector of self through exciting end cap outer surface, by the difference of light-beam position sensed, accurately can measure amplitude and the frequency of exciting end cap.The vibration signal that laser displacement sensor collects is after preamplifier amplifies, and with analog input change-over panel, the analog signal of input is carried out high-speed a/d conversion by change-over panel and data collecting card, is finally input to industrial computer.Change the electric current that ultrasonic power exports, the magnetic field that solenoid produces also can change thereupon, thus change exciting end cap amplitude and frequency.After closing ultrasonic power, exciting end cap stops vibration, opens the pressure that unloader sheds exciting cylinder interior.
Claims (1)
1. a vibration machining magnetic flow liquid exciting device, comprises exciting cylinder, magnetic flow liquid hydraulic system, vibrator work condition inspection system;
It is characterized in that: described exciting cylinder comprises exciting cylinder body, mounting base, solenoid, exciting end cap; Solenoid is surrounded on exciting cylinder body lateral surface, and exciting end cap and exciting cylinder body are bolted, and exciting cylinder body is bolted and is installed on mounting base;
Described magnetic flow liquid hydraulic system comprises magnetic flow liquid case, filter, oil pump, motor, check valve, overflow valve, oil pressure gauge, manual ball valve, unloader, thermometer; Magnetic flow liquid case is connected with filter inlet by pipeline, and filter outlet is connected with the import of oil pump by pipeline, and driven by motor oil pump operates; Fuel pump outlet is connected with check valve inlet by oil pipe, the import of one-way valved outlet and overflow valve, the import of manual ball valve, the import of unloader communicate, the outlet of overflow valve, the outlet of unloader are connected with magnetic flow liquid case by pipeline, manual ball valve outlet is connected by the import of pipeline with exciting cylinder body, oil pressure gauge is arranged on the import of overflow valve, and thermometer is arranged in magnetic flow liquid case;
Described vibrator work condition inspection system comprises ultrasonic power, laser displacement sensor, sensor stand, preamplifier, change-over panel, data collecting card and industrial computer; Ultrasonic power is connected with solenoid, and laser displacement sensor bolt is installed on sensor stand platform, and is aimed at test side outside exciting end cap, and sensor stand and mounting base are bolted fixing; Laser displacement sensor is connected with the signal input port of preamplifier, the output port of preamplifier is connected with the analog input Wiring port of change-over panel, change-over panel is connected with data collecting card by cable, and data collecting card is connected with industrial computer by PCI slot.
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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 CN104607378B (en) | 2017-01-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828439A (en) * | 2020-06-16 | 2020-10-27 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
| CN112213391A (en) * | 2020-10-15 | 2021-01-12 | 山东省交通科学研究院 | Nondestructive excitation inspection device for anchor rod |
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| JPH06312158A (en) * | 1993-04-30 | 1994-11-08 | Matsui Mfg Co | Method and device for generating air vibration wave |
| CN101086288A (en) * | 2006-06-06 | 2007-12-12 | 杜彦亭 | Controllable gas-liquid vibration damper |
| US20110056780A1 (en) * | 2006-05-01 | 2011-03-10 | St Clair Kenneth Alan | Controllable vehicle suspension system with a controllable magnetorheological fluid strut |
| 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 |
| US20140152066A1 (en) * | 2012-06-12 | 2014-06-05 | Gregory J. Hiemenz | Failsafe magnetorheological (mr) energy absorber |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06312158A (en) * | 1993-04-30 | 1994-11-08 | Matsui Mfg Co | Method and device for generating air vibration wave |
| US20110056780A1 (en) * | 2006-05-01 | 2011-03-10 | St Clair Kenneth Alan | Controllable vehicle suspension system with a controllable magnetorheological fluid strut |
| CN101086288A (en) * | 2006-06-06 | 2007-12-12 | 杜彦亭 | Controllable gas-liquid vibration damper |
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| US20140152066A1 (en) * | 2012-06-12 | 2014-06-05 | Gregory J. Hiemenz | Failsafe magnetorheological (mr) energy absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111828439A (en) * | 2020-06-16 | 2020-10-27 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
| CN111828439B (en) * | 2020-06-16 | 2022-08-09 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
| CN112213391A (en) * | 2020-10-15 | 2021-01-12 | 山东省交通科学研究院 | Nondestructive excitation inspection device for anchor rod |
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| CN104607378B (en) | 2017-01-11 |
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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 |