CN203144489U - Ultrasonic impact stress relieving system - Google Patents
Ultrasonic impact stress relieving system Download PDFInfo
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- CN203144489U CN203144489U CN 201320083478 CN201320083478U CN203144489U CN 203144489 U CN203144489 U CN 203144489U CN 201320083478 CN201320083478 CN 201320083478 CN 201320083478 U CN201320083478 U CN 201320083478U CN 203144489 U CN203144489 U CN 203144489U
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Abstract
The utility model relates to the technical field of ultrasonic impact, and particularly discloses an ultrasonic impact stress relieving system which comprises a control box and an impact gun, wherein a transducer connected with the impact gun is arranged in the control box; a rectifying inversion module, a matching network connected with the rectifying inversion module and the transducer as well as a single chip and a data acquisition card in mutual electrical connection are arranged in the control box; one end of the single chip is connected between the rectifying inversion module and the matching network, and the other end of the single chip is electrically connected with the rectifying inversion module; and one end of the data acquisition card is electrically connected with a computer system. The ultrasonic impact stress relieving system provided by the utility model overcomes the shortcomings of unstable frequency, difficult power tracking, complicated adjustment and the like of the existing ultrasonic power supplies, guarantees the ultrasonic aging treatment effect and improves the quality of welded products.
Description
Technical field
The utility model relates to the ultrasonic impact technical field, relates in particular to a kind of system that utilizes the ultrasonic wave high-frequency percussion to eliminate stress.
Background technology
The ultrasonic impact technology is a kind of method of eliminating the harmful residual tension of parts surface or weld metal zone efficiently, introducing useful stress.Ultrasonic impact is to utilize powerful ultrasonic wave to promote percussion tool to impact metal object surface with the frequency of per second more than 20,000 times, because hyperacoustic high frequency, efficient and focus on macro-energy down makes metal surface produce bigger compactibility and is out of shape; Supersonic shock wave has changed original stress field simultaneously, produces the stress of certain numerical value, and the ultrasonic impact position is strengthened.The ultrasonic wave driving power is connected with the ultrasonic transducer that arranges in the enclosure by cable, and the vibration output end of transverter is connected with horn, and striker pin is equipped with in the horn end.The ultrasonic wave driving power converts civil power to the high-frequency high-voltage alternating current, is defeated by ultrasonic transducer.The ultrasonic transducer reversed piezoelcetric effect of utilizing piezoelectric ceramics converts the electric energy of input to mechanical energy then, i.e. ultrasonic wave, and it takes the form of transverter and is vertically making reciprocal stretching motion; The frequency of stretching motion is equal to the AC current frequency of driving power, and flexible displacement is about tens microns.The effect one of horn is that the output amplitude of transverter is amplified, and reaches more than 100 microns, and the firing pin that liquidates on the other hand applies surging force, promotes the preshoot of striker pin high speed.Behind the impact head impact workpiece, speed is decreased to 0 meter per second by being not less than 1.5 meter per seconds in a short period of time, and energy is to the weld seam transmission, to reach the effect of eliminating internal stress.Impact head is subjected to resilience after the retroaction of workpiece, run into the horn of high-frequency vibration after, excited again, hit again weld seam at a high speed, so repeated multiple times is finished the impact operation.
Present traditional ultrasonic impact timeliness equipment, exist following problem: when (1) changes when the voltage of ultrasonic power, the output rating of ultrasonic power also can change, and at this moment being reflected on the ultrasonic transducer is exactly that mechanical vibration are suddenly big or suddenly small, causes the impact effect instability.Therefore need to stablize output rating, generally by the corresponding adjustment power amplifier of power feedback signal, make power magnification stable.(2) provide the frequency-tracking signal, it is most effective when ultrasonic transducer is operated in resonant frequency point, it is the most stable to work, and the resonant frequency point of ultrasonic transducer can change owing to the aging back of assembling reason and work, the frequency of certain this change is drift just, and it is not very big changing, and the frequency-tracking signal can be controlled the ultrasonic power signal, make the frequency of signal ultrasonic power follow the tracks of the resonant frequency point of ultrasonic transducer within the specific limits, allow ultrasonic power be operated in optimum regime.(3) can't show the current-time curvel of ag(e)ing process, how its timeliness treatment effect to judge, and the effect of ageing treatment can't determine then and there, need special-purpose stress test equipment to detect after, could determine effect.
Further, effect technique during existing ultrasonic impact, it adopts the method for hardware to carry out constant current regulation and frequency-tracking, and the ageing treatment effect is undesirable.Performance is: (1) its system keeps track frequency is ± 3.0kHz that frequency jitter is big; (2) its current stability is poor, needs the resistance knob to finely tune; Images such as (3) its timeliness treatment effect instability, and dead time curve show.
The utility model content
The purpose of this utility model is, propose a kind of ultrasonic impact system that eliminates stress, it has solved present ultrasonic power frequency instability, power tracking difficulty and adjust shortcoming such as complexity, ensure the supersonic aging treatment effect, improved quality of welded.
For achieving the above object, the utility model provides a kind of ultrasonic impact system that eliminates stress, it comprises: controlling box and impact gun, be provided with the transverter that is connected setting with impact gun in this controlling box, be provided with the matching network of commutation inversion module, connection commutation inversion module and transverter in the described controlling box, and the micro-chip and the data collecting card that electrically connect mutually; Described micro-chip one end is connected between commutation inversion module and the matching network, and this micro-chip the other end and commutation inversion module electrically connect; Described data collecting card one end also electrically connects with a computer system.
Wherein, be connected by cable between described transverter and the impact gun, be provided with horn between this transverter and the impact gun.
In the utility model, include the rectifier bridge, DC/DC transmodulator, invertor and the transformer that electrically connect successively in the described commutation inversion module, this rectifier bridge one end is connected with civil power, and transformer one end is connected with matching network.
Moreover, including a current rectifying and wave filtering circuit in the described rectifier bridge, this current rectifying and wave filtering circuit can be the uncontrollable rectifying circuit of a diode; Described invertor adopts full-bridge inverter; Described transformer adopting high-frequency transformer.
Concrete, electrically connect by a signal acquisition circuit and micro-chip between described transformer and the matching network, be provided with Hall element and the A/D change-over circuit of mutual electric connection in this signal acquisition circuit, this A/D change-over circuit one end and micro-chip electrically connect.
Further, include the power tracking circuit, power control circuit, D/A change-over circuit and the voltage-controlled oscillator that electrically connect successively in the described micro-chip, this A/D change-over circuit and power tracking circuit electrically connect.
In addition, described micro-chip electrically connects by one first driving circuit and DC/DC transmodulator, and this micro-chip also electrically connects by one second driving circuit and invertor.
Concrete, it is the 32 channel analog signal capture cards of PCI7901 that described data collecting card can adopt model.
In the utility model, comprise at least one PC in the described computer system, this PC adopts intel double-core E2210 CPU, and this computer system also is provided with one 15 cun touch screen; In addition, described computer system also is connected with a printer.
The ultrasonic impact of the present utility model system that eliminates stress, it adopts computer systems technology, the method that combines with hardware by software, realized the intellectuality of ultrasonic power, solved present ultrasonic power frequency instability, shortcomings such as power tracking difficulty and adjustment complexity have ensured the supersonic aging treatment effect, have improved the welding product quality; In addition, it has solved the problem that prior art can't be differentiated the stress relieving effect of ultrasonic impact timeliness immediately, can be welding product provides the foundation of product timeliness check, namely under the stable situation of resonant frequency f, if (i-t) flatten then can think to reach the ultrasonic impact timeliness effect of ageing treatment section for current i and time t curve.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the eliminate stress modular structure synoptic diagram of a kind of specific embodiment of system of the utility model ultrasonic impact;
Fig. 2 be in the utility model controlled frequency from the schema of motion tracking;
Fig. 3 is the eliminate stress timeliness design sketch of system of ultrasonic impact of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of ultrasonic impact system that eliminates stress, it comprises: controlling box and impact gun (not shown), be provided with the transverter 10 that is connected setting with impact gun in this controlling box, be provided with commutation inversion module 20 in the described controlling box, connect the matching network 30 of commutation inversion module 20 and transverter 10, and the micro-chip 40 and data collecting card 50 that electrically connect mutually; Described micro-chip 40 1 ends are connected between commutation inversion module 20 and the matching network 30, and these micro-chip 40 the other ends and commutation inversion module 20 electrically connect; Described data collecting card 50 1 ends also electrically connect with a computer system 60.The utility model adopts computer systems technology, has realized the intellectuality of ultrasonic power, and it can make the interior residual-tensile stress of upper layer of metal welding seam become stress, thereby significantly improves the fatigue lifetime of metal construction.
Wherein, be connected by cable between described transverter 10 and the impact gun, be provided with horn (not shown) between this transverter 10 and the impact gun.This transverter 10 be used for will input electric energy convert mechanical energy to, i.e. ultrasonic wave, it takes the form of transverter 10 and is vertically making reciprocal stretching motion.The frequency of this stretching motion is equal to the AC current frequency of driving power, and flexible displacement is about tens microns.The effect one of horn is that the output amplitude of transverter 10 is amplified, and reaches more than 100 microns, and the impact rifle applies surging force on the other hand, promotes the preshoot of impact gun high speed.After impact gun impacted workpiece, energy was to the weld seam transmission, to reach the effect of eliminating internal stress.The ultrasonic wave high-frequency percussion that the utility model adopts utilizes powerful ultrasonic wave exactly, promote percussion tool, the impact rifle applies surging force, and along the toe of weld position of bead direction high speed impact weld seam, impact gun is subjected to resilience after the retroaction of workpiece, after running into the horn of high-frequency vibration, excited again, hit again weld seam at a high speed, so repeated multiple times, promote impact gun with the frequency of per second more than 20,000 times, finish the operation of impacting metal object surface.After impact gun impacts workpiece, energy is to the weld seam transmission, make it to produce bigger compressive plastic deformation, make welding toe produce how much slick and sly transition, thereby greatly reduce the stress concentration that welding toe reinforcement and pit cause, eliminate fine crack and the slag defective on welding toe top layer, suppressed the germinating in advance of crackle; Adjusted the welding residual stress field simultaneously, eliminated its welding tensile stress, near toe of weld, produced the residual compressive stress of certain numerical value, and the toe of weld part material is strengthened, to reach the effect of eliminating internal stress.
In the utility model, include the rectifier bridge 21, DC/DC transmodulator 22, invertor 23 and the transformer 24 that electrically connect successively in the described commutation inversion module 20, these rectifier bridge 21 1 ends are connected with civil power, and transformer 24 1 ends are connected with matching network 30.Wherein, include a current rectifying and wave filtering circuit in the described rectifier bridge 21, this current rectifying and wave filtering circuit can be the uncontrollable rectifying circuit of a diode, and the single phase alternating current of 220V obtains volts DS through the uncontrollable rectifying circuit of this diode.Described invertor 23 can be preferably high-frequency transformer, and it becomes 40Hz for the a-c cycle with 50Hz makes it be in the ultrasonic wave frequency-domain segment.Concrete, this invertor 23 can adopt full-bridge inverter as the power transfer main power circuit of ultrasonic vibration system, has solved the drift that produces resonant frequency owing to reasons such as load temperature variations, guarantees the high-level efficiency of system.
Moreover, electrically connect by a signal acquisition circuit 32 and micro-chip 40 between described transformer 24 and the matching network 30.In the utility model specific embodiment, be provided with Hall element and the A/D change-over circuit (not shown) of mutual electric connection in the described signal acquisition circuit 32, this A/D change-over circuit one end and micro-chip 40 electrically connect.Further, include the power tracking circuit 41, power control circuit 42, D/A change-over circuit and the voltage-controlled oscillator (not shown) that electrically connect successively in the described micro-chip 40, this A/D change-over circuit and power tracking circuit 41 electrically connect.Described micro-chip 40 electrically connects by one first driving circuit 43 and DC/DC transmodulator 22, and this micro-chip 40 also electrically connects by one second driving circuit 44 and invertor 23.During work, signal acquisition circuit 32 sampling high-frequency current signals, it utilizes Hall element to obtain the current effective value signal, be converted to numerary signal through A/D fast and send into micro-chip 40, micro-chip 40 is analyzed the virtual value signal of electric current, oscillation frequency by D/A conversion output voltage control voltage-controlled oscillator, by the driving circuit isolation drive, the operating frequency that makes invertor 23 changes with the resonant frequency of load, thereby realize the process from motion tracking, make transverter 10 work in optimum regime.Especially, first driving circuit 43 in the utility model and second driving circuit 44 all can adopt igbt (IGBT) driver module; Power tracking circuit 41 and power control circuit 42 can adopt existing frequency-tracking pilot circuit, realize frequency-tracking control by phase locking technique, when frequency-tracking partly phase differential occurs, compose big step-length (m=100) to frequency earlier, reducing along with phase differential then, reducing step-length gradually, is zero up to phase differential.Utilize the control of this IGBT driver module and intelligentized frequency-tracking, not only strengthened the stability of equipment, increased the output rating Controlling System, and it is more reasonable that system of the present utility model is used at the material to unlike material.
As shown in Figure 2, be the schema of controlled frequency in the utility model from motion tracking, in the utility model, described automatic frequency tracking is based on the variable step frequency-tracking, and this variable step frequency-tracking is the step pitch that changes search in the process of frequency-tracking as the case may be at any time.At first given phase sample signal is established two reference value L, K (L〉K).Interruption is opened in elder generation's initialize, through the phase signal P after the A/D conversion〉L, during or P＜K, illustrate that the frequency of ultrasonic-frequency power supply away from the resonant frequency of oscillator, adopts the regulative mode of big step pitch, can be rapidly near the resonant frequency of oscillator; If L〉P〉K, illustrate that the frequency of ultrasonic-frequency power supply is operated near the resonant frequency of oscillator, adopt the regulative mode of small step distance, can improve the precision of frequency-tracking, its step pitch can be little of 4kHz, can satisfy the ultrasonic wave requirement.
Concrete, it is the 32 passages high speed of PCI7901, high-precision collection of simulant signal card that data collecting card 50 described in the utility model can adopt model, and it can make the test current data more accurate, and the stress precision of calculating improves greatly.
Moreover, comprise at least one PC in the computer system 60 in the utility model, this PC can adopt intel double-core E2210CPU to improve analysis precision and the data processing speed of frequency, and its dominant frequency is 2.2GHz, Jin Shidun memory bar with 1G, the jumbo hard disk of 500G.These computer system 60 inner LabWindows/CVI software development techniques that adopt American National instrument (NI:National Instruments) company, the mode that combines with software and hardware, automatic frequency tracking function and control function of power have been realized, ensured the stability of frequency in the ageing treatment process, make in its timeliness treating processes working current steady, improve the frequency control precision, ensured the consistence of ageing treatment effect.Computer system 60 in the utility model can also adopt 15 cun touch screen 62 as the running software interface, and current-time curvel and frequency are shown, can clearly show curve, chart and data.In addition, this computer system 60 can also connect a printer 64, and this printer can adopt ink-jet printer, and the printable parametric line that goes out in the ageing treatment process is as the judging basis of timeliness check.As selectivity embodiment of the present utility model, described computer system 60 can also adopt the virtual meter panel technique of display, is used for parameter and ageing treatment curves such as dynamic pointer and digital display frequency, electric current.
As shown in Figure 3, be the eliminate stress timeliness design sketch of system of the utility model ultrasonic impact.In the utility model, as long as meet following condition, then can think greatly ultrasonic impact timeliness effect, namely under the stable situation of resonant frequency f, if (i-t) flatten then can think to reach the ultrasonic impact timeliness effect of ageing treatment section for current i and time t curve.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. ultrasonic impact system that eliminates stress, comprise controlling box and impact gun, be provided with the transverter that is connected setting with impact gun in this controlling box, it is characterized in that, be provided with the matching network of commutation inversion module, connection commutation inversion module and transverter in the described controlling box, and the micro-chip and the data collecting card that electrically connect mutually; Described micro-chip one end is connected between commutation inversion module and the matching network, and this micro-chip the other end and commutation inversion module electrically connect; Described data collecting card one end also electrically connects with a computer system.
2. the ultrasonic impact as claimed in claim 1 system that eliminates stress is characterized in that, is connected by cable between described transverter and the impact gun, is provided with horn between this transverter and the impact gun.
3. the ultrasonic impact as claimed in claim 2 system that eliminates stress, it is characterized in that, include the rectifier bridge, DC/DC transmodulator, invertor and the transformer that electrically connect successively in the described commutation inversion module, this rectifier bridge one end is connected with civil power, and transformer one end is connected with matching network.
4. the ultrasonic impact as claimed in claim 3 system that eliminates stress is characterized in that include a current rectifying and wave filtering circuit in the described rectifier bridge, this current rectifying and wave filtering circuit is the uncontrollable rectifying circuit of a diode; Described invertor adopts full-bridge inverter; Described transformer adopting high-frequency transformer.
5. the ultrasonic impact as claimed in claim 4 system that eliminates stress, it is characterized in that, electrically connect by a signal acquisition circuit and micro-chip between described transformer and the matching network, be provided with Hall element and the A/D change-over circuit of mutual electric connection in this signal acquisition circuit, this A/D change-over circuit one end and micro-chip electrically connect.
6. the ultrasonic impact as claimed in claim 5 system that eliminates stress, it is characterized in that, include the power tracking circuit, power control circuit, D/A change-over circuit and the voltage-controlled oscillator that electrically connect successively in the described micro-chip, this A/D change-over circuit and power tracking circuit electrically connect.
7. the ultrasonic impact as claimed in claim 6 system that eliminates stress is characterized in that, described micro-chip electrically connects by one first driving circuit and DC/DC transmodulator, and this micro-chip is also by one second driving circuit and invertor electric connection.
8. the ultrasonic impact as claimed in claim 1 system that eliminates stress is characterized in that, it is the 32 channel analog signal capture cards of PCI7901 that described data collecting card adopts model.
9. the ultrasonic impact as claimed in claim 1 system that eliminates stress is characterized in that, comprises at least one PC in the described computer system, and this PC adopts intel double-core E2210CPU, and this computer system also is provided with one 15 cun touch screen.
10. the ultrasonic impact as claimed in claim 9 system that eliminates stress is characterized in that described computer system also is connected with a printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083478 CN203144489U (en) | 2013-02-23 | 2013-02-23 | Ultrasonic impact stress relieving system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083478 CN203144489U (en) | 2013-02-23 | 2013-02-23 | Ultrasonic impact stress relieving system |
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| CN203144489U true CN203144489U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320083478 Expired - Fee Related CN203144489U (en) | 2013-02-23 | 2013-02-23 | Ultrasonic impact stress relieving system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340050A (en) * | 2019-06-28 | 2019-10-18 | 中广核工程有限公司 | It is a kind of for branch pipe weld seam Overlay built-up welding with weldering cleaning and welding bead apparatus for shaping |
| CN115449619A (en) * | 2022-08-22 | 2022-12-09 | 武汉理工大学 | Flexible control method of ultrasonic impact device |
-
2013
- 2013-02-23 CN CN 201320083478 patent/CN203144489U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340050A (en) * | 2019-06-28 | 2019-10-18 | 中广核工程有限公司 | It is a kind of for branch pipe weld seam Overlay built-up welding with weldering cleaning and welding bead apparatus for shaping |
| CN115449619A (en) * | 2022-08-22 | 2022-12-09 | 武汉理工大学 | Flexible control method of ultrasonic impact device |
| CN115449619B (en) * | 2022-08-22 | 2024-04-30 | 武汉理工大学 | Flexible control method of ultrasonic impact device |
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Denomination of utility model: Ultrasonic impact stress relieving system Effective date of registration: 20151112 Granted publication date: 20130821 Pledgee: Agricultural Bank of China Limited by Share Ltd Chengdu Jinniu branch Pledgor: Chengdu Hai Xun Scientific and Technical Industry Co., Ltd Registration number: 2015990000993 |
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Effective date of registration: 20180918 Granted publication date: 20130821 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20210223 |