CN100497669C - Frequency self-adaptive oscillation time-effect method and device - Google Patents
Frequency self-adaptive oscillation time-effect method and device Download PDFInfo
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- CN100497669C CN100497669C CNB2007100359688A CN200710035968A CN100497669C CN 100497669 C CN100497669 C CN 100497669C CN B2007100359688 A CNB2007100359688 A CN B2007100359688A CN 200710035968 A CN200710035968 A CN 200710035968A CN 100497669 C CN100497669 C CN 100497669C
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Abstract
The invention provides a vibratory stress relief (VSR) method and device with adaptive frequency, wherein, an acceleration sensor collects information on acceleration change and inputs that into a controller, which outputs controlling signals so that the vibratory frequency of a vibration exciter changes, till the optimal resonance frequency is obtained. The invention comprises an acceleration sensor, an electric charge converting circuit, an amplifying circuit, a low-pass filter circuit, a voltage amplifying circuit, a detection circuit, a controller, a speed-regulating circuit and a vibration exciter. The invention is of a simple process method, is easy to operate, with simple and reasonable structure, can efficiently improve the VSR efficiency, track just in time the change in resonance frequency, improve effectively VSR effect, can substitute prior VSR method, and is especially suitable for relieving inner stress of thick sheets, and is suitable for industrialized application.
Description
Technical field
The present invention relates to a kind of method and device of oscillating aging, be meant a kind of oscillation time-effect method and device of frequency self-adaption especially.
Background technology
Oscillating aging is that workpiece mode with forced vibration under its natural frequency is applied additional stress, carry out several minutes to tens of minutes exciting, when the stack of additional dynamic stress and unrelieved stress meets or exceeds the yield strength of material, workpiece generation microcosmic or macroscopical viscous deformation, thereby the unrelieved stress of reduction and homogenizing workpiece, and make its dimensional precision reach stable.
In existing oscillating aging equipment, generally adopt a kind of traditional oscillating aging treatment process: determine the resonant frequency of workpiece by omnidistance or local frequency sweep, under the subresonance frequency, reached the purpose of timeliness then in exciting 10-45 minute.
Traditional method generally has following shortcoming:
1. workpiece is carried out whole process or local frequency sweep, the time is long, and efficient is low.
2. workpiece its resonant frequency in the process of timeliness can change, even less value of the skew of resonant frequency all may make workpiece not reach resonance, the timeliness efficient that this will reduce workpiece causes energy dissipation.
3. mechanical type vibrating bin and motor directly are rigidly connected, can have a strong impact on electric machine operation state and work-ing life together with the workpiece high vibration in the ag(e)ing process.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and provide a kind of processing method simple, easy to operate, simple and reasonable, can effectively improve oscillating aging efficient, follow the tracks of the oscillation time-effect method and the device of the frequency self-adaption of variation of resonant frequency in good time.
The oscillation time-effect method of a kind of frequency self-adaption of the present invention comprises the steps:
A, original frequency of given vibrator;
B, utilize acceleration transducer to gather acceleration change information and import controller, after controller compares analysis to this information, output control signals to speed regulation device, the vibrational frequency of vibrator is changed to the bigger direction of acceleration, until acceleration flex point from large to small, the frequency of this flex point correspondence is the optimum resonance frequency;
C, acceleration transducer are in resonance process, the variation of real-time follow-up acceleration, and input controller, after controller compares analysis to this information, output control signals to speed regulation device, the vibrational frequency that makes vibrator realizes the purpose of high-level efficiency oscillating aging all the time with consistent by the natural frequency of exciting thing;
The vibration ageing device of a kind of frequency self-adaption of the present invention is to adopt following proposal to realize: it comprises acceleration transducer, the charge conversion circuit, amplifying circuit, low-pass filter circuit, voltage amplifier circuit, detecting circuit, controller, alignment circuit, vibrator, described acceleration transducer, the charge conversion circuit, amplifying circuit, low-pass filter circuit, voltage amplifier circuit, detecting circuit, controller, alignment circuit is connected in series successively, described acceleration transducer detects the low current signal that is produced by the vibration of exciting thing, become voltage signal through the charge conversion circuit conversion, pass through voltage amplifier circuit again, low-pass filter circuit is to obtain big vibration acceleration signal, by detecting circuit the interchange vibration acceleration signal being become the DC vibrating acceleration signal at last is input in the controller, after controller compares analysis to this signal, export one and control signal to alignment circuit, so the vibrational frequency of adjusting vibrator with by exciting thing natural frequency-cause.
Among the present invention, vibrator is connected and composed by flexible shaft by direct-current machine and vibrating bin.
Among the present invention, the direct-current machine of vibrator bottom is provided with anti-vibration pad.
The present invention is owing to adopt aforesaid method and device, utilize acceleration transducer to detect the low current signal that is produced by the vibration of exciting thing, become voltage signal through the charge conversion circuit conversion, pass through voltage amplifier circuit, low-pass filter circuit again to obtain big vibration acceleration signal, by detecting circuit the interchange vibration acceleration signal being become the DC vibrating acceleration signal at last is input in the controller, after controller compares analysis to this signal, export one and control signal to alignment circuit, and then the vibrational frequency of adjustment vibrator is with consistent by exciting thing natural frequency.Can realize the self-adaptation of vibrational frequency, effectively improve the effect and the efficient of oscillating aging; In addition, the present invention owing to adopt is provided with the structure that anti-vibration pad and direct-current machine and vibrating bin are connected by flexible shaft in the direct-current machine bottom, can effectively reduce the vibration of direct-current machine in ag(e)ing process, avoid direct-current machine the early stage phenomenon of damaging to occur and take place, reach the purpose of high-level efficiency oscillating aging.In sum, processing method of the present invention is simple, easy to operate, simple and reasonable, can effectively improve oscillating aging efficient, follow the tracks of variation of resonant frequency in good time, effectively improve effect of vibration stress relief, can substitute existing oscillation time-effect method, the internal stress that is particularly suitable for slab class object is eliminated, and is suitable for industrial applications.
Description of drawings
Accompanying drawing 1 is the structural representation of the vibration ageing device of a kind of frequency self-adaption of the present invention;
Accompanying drawing 3 is the electric functional block diagram of the vibration ageing device of a kind of frequency self-adaption of the present invention.
Referring to accompanying drawing 1,2,1-workpiece among the figure, 1-direct-current machine, 3-flexible shaft, 4-vibrating bin, 7--Controlling System, 9--transmitter, 10-mass, 11-resilient support block, 13--anti-vibration pad, 14-support.
Embodiment
The oscillation time-effect method of a kind of frequency self-adaption of the present invention is by the accurate natural frequency of given original frequency search workpiece 1 (thick matter aluminium sheet), be feedback quantity with the acceleration according to the principle of accekeration maximum under natural frequency then, implement the adaptive tracing of frequency.
Describe in detail below in conjunction with accompanying drawing:
Referring to accompanying drawing 1,2,3, workpiece 1 supports 11 by elastic component and is supported on the ground, for making workpiece 1 suffered dynamic stress more even, is equipped with mass 10 at workpiece 1 two ends, and flexible of mass 10 underlays.Vibrating bin 4 bottoms are rigidly connected on the workpiece 1 by support 14; one end is connected with motor 2 by flexible shaft 3; motor 2 bottoms are provided with anti-vibration pad 13 and place on the support 14; can avoid result in violent vibration of motor effectively like this; reach the purpose of protection motor; make the oscillating aging process can on natural frequency, carry out exciting, improve timeliness efficient.The vibration acceleration value of acceleration transducer H measuring workpieces 1, its signal metering-in control system 7, the data signal of 7 pairs of inputs of Controlling System carries out computing behind the digital filtering, analysis, processing and draws real-time excited frequency, thus control motor 2 accurately turns round; Among the present invention, Controlling System 7 comprises charge conversion circuit A, amplifying circuit B, low-pass filter circuit C, voltage amplifier circuit D, detecting circuit E, controller F, alignment circuit G, described charge conversion circuit A, amplifying circuit B, low-pass filter circuit C, voltage amplifier circuit D, detecting circuit E, controller F, alignment circuit G are connected in series successively, the input of charge conversion circuit A connects the output of acceleration transducer H, and the output of alignment circuit G connects motor 2; The present invention utilizes acceleration transducer to detect the low current signal that is produced by the vibration of exciting thing, become voltage signal through the charge conversion circuit conversion, pass through voltage amplifier circuit, low-pass filter circuit again to obtain big vibration acceleration signal, by detecting circuit the interchange vibration acceleration signal being become the DC vibrating acceleration signal at last is input in the controller, after controller compares analysis to this signal, export one and control signal to alignment circuit, and then the vibrational frequency of adjustment vibrator is with consistent by exciting thing natural frequency.The self-adaptation of vibrational frequency can be realized, the effect and the efficient of oscillating aging can be effectively improved.
Claims (1)
1, a kind of oscillation time-effect method of frequency self-adaption comprises the steps:
A, original frequency of given vibrator;
B, utilize acceleration transducer to gather acceleration change information and import controller, after controller compares analysis to this information, output control signals to speed regulation device, the vibrational frequency of vibrator is changed to the bigger direction of acceleration, until acceleration flex point from large to small, the frequency of this flex point correspondence is the optimum resonance frequency;
C, acceleration transducer are in resonance process, the variation of real-time follow-up acceleration, and input controller are after controller compares analysis to this information, output control signals to speed regulation device, the vibrational frequency that makes vibrator is all the time with consistent by the natural frequency of exciting thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100359688A CN100497669C (en) | 2007-10-26 | 2007-10-26 | Frequency self-adaptive oscillation time-effect method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100359688A CN100497669C (en) | 2007-10-26 | 2007-10-26 | Frequency self-adaptive oscillation time-effect method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101139653A CN101139653A (en) | 2008-03-12 |
| CN100497669C true CN100497669C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100359688A Expired - Fee Related CN100497669C (en) | 2007-10-26 | 2007-10-26 | Frequency self-adaptive oscillation time-effect method and device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI418636B (en) * | 2008-12-05 | 2013-12-11 | Univ Nat Chunghsing | Resonance Elimination Residual Stress System and Its Method |
| CN102321793B (en) * | 2011-10-08 | 2013-05-08 | 广西大学 | Vibratory stress relief apparatus for medium frequency and low frequency shaft type parts, and use method thereof |
| CN102493321B (en) * | 2011-11-24 | 2014-01-15 | 三一重工股份有限公司 | Vibration roller and control method and control system thereof |
| CN103757197B (en) * | 2014-01-25 | 2015-09-30 | 浙江大学 | For eliminating high-frequency vibration aging system and the method for small size component unrelieved stress |
| CN105463180B (en) * | 2015-12-29 | 2017-11-28 | 共享铸钢有限公司 | A kind of casting vibration stress-removal system and its vibration stress-removal method |
| CN107937843A (en) * | 2017-12-21 | 2018-04-20 | 重庆市铜梁区华亿来铝材加工厂 | A kind of aluminium alloy residual stress cancellation element |
| CN109632020A (en) * | 2019-01-30 | 2019-04-16 | 天津大学 | It can exclude the vortex-shedding meter measurement method of resonance interference |
| CN112981293B (en) * | 2021-05-12 | 2021-08-06 | 中国航发北京航空材料研究院 | Vibration aging device and forming vibration aging method for structural wall plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381673A (en) * | 1980-12-03 | 1983-05-03 | Martin Engineering Company | Vibrational stress relief |
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2007
- 2007-10-26 CN CNB2007100359688A patent/CN100497669C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381673A (en) * | 1980-12-03 | 1983-05-03 | Martin Engineering Company | Vibrational stress relief |
Non-Patent Citations (2)
| Title |
|---|
| 微机控制振动时效设备测控系统的研究. 马振宇，贾叔仕.组合机床与自动化加工技术，第2002年第12期. 2002 |
| 微机控制振动时效设备测控系统的研究. 马振宇，贾叔仕.组合机床与自动化加工技术，第2002年第12期. 2002 * |
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| CN101139653A (en) | 2008-03-12 |
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