CN203683616U - High-frequency vibration aging system for removing residual stress of small-size member - Google Patents
High-frequency vibration aging system for removing residual stress of small-size member Download PDFInfo
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- CN203683616U CN203683616U CN201420049305.7U CN201420049305U CN203683616U CN 203683616 U CN203683616 U CN 203683616U CN 201420049305 U CN201420049305 U CN 201420049305U CN 203683616 U CN203683616 U CN 203683616U
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- 230000035882 stress Effects 0.000 title claims abstract description 42
- 230000032683 aging Effects 0.000 title claims abstract description 21
- 230000001133 acceleration Effects 0.000 claims abstract description 31
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses a high-frequency vibration aging system for removing the residual stress of a small-size member. The system comprises a signal generator, a power amplifier, a vibration table, a vibration level amplification device, a charge amplifier, an oscilloscope and a processor, wherein the processor is used for controlling the signal generator to output a sine excitation signal; the vibration level amplification device is fixed on an excitation table surface; an acceleration sensor is connected with input channels of the charge amplifier respectively; output channels of the charge amplifier are respectively connected with the oscilloscope; and the oscilloscope is connected with the processor. The system has the advantage of being capable of removing the residual stress of the small-size member through vibration.
Description
Technical field
The utility model relates to high-frequency vibration aging system and the method for eliminating small size component unrelieved stress, is particularly suitable for the small size components such as MEMS.
Technical background
Vibration aging technology is the method for removing residual stress that mechanical engineering field is conventional, by member being applied to mechanical vibration load, when the unrelieved stress of component inside and additional vibratory stress and when exceeding the local yielding limit of material, make material that local viscous deformation occur, thereby make the unrelieved stress of material internal be relaxed and reduce.
Tradition low-frequency vibration timeliness adopts adjustable motor as exciting device, is that the dynamic stress of member effect large amplitude is eliminated to unrelieved stress, and the macroscopic deformation amount of member is large, easily causes the fatigue damage of member.The member of having announced oscillating aging processing in the document " unrelieved stress of vibration aging on eliminating welding stainless steel plate " of the people such as Rao Delin on << vibration and impact >> magazine is the base plate of a large-scale experimental device, material is Ultralow Carbon Stainless Steel 304L, whole circular bottom plate diameter is 7.6m, adopt union-melt weld welding to form by five stainless steel plates, plate thickness is 75 mm.In the superfine people document " large longitudinal welded pipe thermal life and the comparison of oscillating aging stress-removal technique " on << welding journal >> magazine, having announced test steels tube material is Q345 steel, it is of a size of length 12m, external diameter 800mm, wall thickness 40mm.Can find that by the Research Literature of traditional low-frequency vibration timeliness traditional low-frequency vibration timeliness is suitable for eliminating the unrelieved stress of large-size components, and adopt the low-frequency vibration ageing device of traditional buncher exciting to be difficult to clamping small size component.Therefore, traditional low-frequency vibration timeliness cannot be used for eliminating the unrelieved stress of small size component.
Utility model content
Cannot realize in order to overcome prior art the shortcoming of small size component being eliminated to unrelieved stress by vibration; the utility model provides a kind of high-frequency vibration aging system and the method that can eliminate by vibration small size component unrelieved stress; this system and method is that the little amplitude dynamic stress of member effect is eliminated to unrelieved stress; belong to exciting timeliness a little; member macroscopic deformation amount is little; can protect member not to be subject to the danger of fatigue damage, be particularly useful for eliminating the unrelieved stress of the small size components such as MEMS.
For eliminating the high-frequency vibration aging system of small size component unrelieved stress, comprise signal generator, power amplifier, shaking table, a grade multiplying arrangement, charge amplifier, oscilloscope and treater shake; The sinusoidal excitation signal that treater control signal producer output amplitude and frequency all can independently and continuously regulate; Sinusoidal excitation signal is through power amplifier inputted vibration platform;
Grade multiplying arrangement that shakes is fixed on the exciting table top of shaking table moving parts, and grade multiplying arrangement that shakes comprises saddle, is fixed on low bottom-disc and the connecting rod that is connected saddle and low bottom-disc on exciting table top; The section area of connecting rod is less than the section area of saddle, and the section area of connecting rod is less than the section area of low bottom-disc;
The first acceleration transducer is installed on low bottom-disc, the second acceleration transducer is installed on saddle, the first acceleration transducer is connected with the first input channel of charge amplifier, the second acceleration transducer is connected with the second input channel of charge amplifier, two output channels of charge amplifier are connected with oscilloscope respectively, and oscilloscope is connected with treater.
Specifically, small size component is clamped in the upper surface of saddle, small size component is carried out the processing of high-frequency vibration elimination unrelieved stress under the resonant frequency of grade multiplying arrangement that shakes.The output that the output signal of the first acceleration transducer the characterizes shaking table level of shaking
a 1, the output that the output signal of the second acceleration transducer characterizes grade multiplying arrangement that the shakes level of shaking
a 2, the output of grade multiplying arrangement that the shakes level of shaking
a 2be the level of shaking acting on small size component.Treater shows the output of the shaking table level of shaking in real time
a 1with the output of grade multiplying arrangement that the shakes level of shaking
a 2.Under the resonant frequency of grade multiplying arrangement that shakes when exciting, the output of grade multiplying arrangement that the shakes level of shaking
a 2the output that the is greater than shaking table level of shaking
a 1thereby, the eradicating efficacy of raising unrelieved stress.
Shaking table is greater than the high-frequency vibration of 1 kHz for generation of frequency, more than its highest excited frequency can reach 10 kHz.
Further, the size of small size component is less than the diameter of saddle, to guarantee that surface that small size component contacts with upper saddle is all positioned at the upper surface of upper saddle.
Further, small size component is clamped in the upper saddle of grade multiplying arrangement that shakes by briquetting, and briquetting middle part is provided with U-lag, and small size component is pressed between U-lag and upper saddle, briquetting by screw in compression in upper saddle.
The degree of depth of U-lag is less than the thickness of small size component, guarantees that small size component can be pressed in U-lag.
Further, briquetting is U-shaped piece, and the pressing table of briquetting both sides is connected with upper saddle by screw.
Further, the first acceleration transducer and the second acceleration transducer are piezoelectric acceleration transducer.
Technical conceive of the present utility model is: form high-frequency vibration aging system by signal generator, power amplifier, shaking table, shake a grade multiplying arrangement, acceleration transducer, charge amplifier, oscilloscope and treater; Grade multiplying arrangement that shakes comprises upper saddle and the low bottom-disc for acceleration transducer is installed, and for connecting the connecting rod of upper saddle and low bottom-disc, low bottom-disc is fixed on the exciting table top of shaking table; Small size component is the upper surface at upper saddle by briquetting clamping; Treater control signal producer output sinusoidal excitation signal; Power amplifier amplifies sinusoidal excitation signal rear drive shaking table and carries out high-frequency vibration; Shaking table drives grade multiplying arrangement that shakes small size component to be carried out to the processing of high-frequency vibration elimination unrelieved stress.
The beneficial effects of the utility model are as follows:
1, by small size component being carried out the processing of high-frequency vibration elimination unrelieved stress under the resonant frequency of grade multiplying arrangement that shakes, the output that can the amplify shaking table level of shaking, improved the level of shaking acting on small size component, there is the unrelieved stress that can both eliminate significantly small size component, simultaneously the little advantage of macroscopic deformation amount of small size component.
2, small size component is clamped in the upper saddle of grade multiplying arrangement that shakes, grade multiplying arrangement that shakes is fixed on the exciting table top of shaking table, be difficult to directly be clamped in the shortcoming on shaking table exciting table top thereby overcome small size component, have advantages of that the small size component of reduction is difficult to clamping.
Accompanying drawing explanation
Fig. 1 is the high-frequency vibration aging system schematic diagram for eliminating small size component unrelieved stress.
Fig. 2 is grade multiplying arrangement schematic diagram that shakes.
Fig. 3 is briquetting schematic diagram.
Fig. 4 a is the front view of Cr12MoV quenching small size component.
Fig. 4 b is the vertical view of Cr12MoV quenching small size component.
Fig. 5 a is
xaxial unrelieved stress and the schematic diagram that is related to shaking between level.
Fig. 5 b is
yaxial unrelieved stress and the schematic diagram that is related to shaking between level.
Fig. 5 c is
xwith
yaxial residual stress relief ratio and the schematic diagram that is related to shaking between level.
Embodiment
Embodiment mono-
With reference to accompanying drawing, further illustrate the utility model:
For eliminating the high-frequency vibration aging system of small size component unrelieved stress, comprise signal generator, power amplifier, shaking table, grade multiplying arrangement 1, charge amplifier, oscilloscope and treater shake; The sinusoidal excitation signal that treater control signal producer output amplitude and frequency all can independently and continuously regulate; Sinusoidal excitation signal is through power amplifier inputted vibration platform;
Grade multiplying arrangement 1 that shakes is fixed on the exciting table top 6 of shaking table moving parts 7, and grade multiplying arrangement 1 that shakes comprises saddle 11, is fixed on low bottom-disc 12 and the connecting rod 13 that is connected saddle 11 and low bottom-disc 12 on exciting table top 6; The section area of connecting rod 13 is less than the section area of saddle 11, and the section area of connecting rod 13 is less than the section area of low bottom-disc 12;
The first acceleration transducer 4 is installed on the upper surface of low bottom-disc 12, the second acceleration transducer 5 is installed on the upper surface of saddle 11, the first acceleration transducer 4 is connected with the first input channel of charge amplifier, the second acceleration transducer 5 is connected with the second input channel of charge amplifier, two output channels of charge amplifier are connected with oscilloscope respectively, and oscilloscope is connected with treater;
Specifically, small size component 3 is clamped in the upper surface of saddle 11, small size component 3 is carried out the processing of high-frequency vibration elimination unrelieved stress under the resonant frequency of grade multiplying arrangement 1 that shakes.The output that the output signal of the first acceleration transducer 4 the characterizes shaking table level of shaking
a 1, the output that the output signal of the second acceleration transducer 5 characterizes grade multiplying arrangement 1 that the shakes level of shaking
a 2, the output of grade multiplying arrangement 1 that the shakes level of shaking
a 2be the level of shaking acting on small size component 3.Treater shows the output of the shaking table level of shaking in real time
a 1with the output of grade multiplying arrangement 1 that the shakes level of shaking
a 2.Under the resonant frequency of grade multiplying arrangement 1 that shakes when exciting, the output of grade multiplying arrangement that the shakes level of shaking
a 2the output that the is greater than shaking table level of shaking
a 1thereby, the eradicating efficacy of raising unrelieved stress.
Shaking table is greater than the high-frequency vibration of 1 kHz for generation of frequency, more than its highest excited frequency can reach 10 kHz.
The size of small size component 3 is less than the diameter D of saddle 11, to guarantee that surface that small size component 3 contacts with upper saddle 11 is all positioned at the upper surface of upper saddle 11.
The degree of depth of U-lag 21 is less than the thickness of small size component 3, guarantees that small size component 3 can be pressed in U-lag 21.
Briquetting 2 is U-shaped piece, and the pressing table 22 of briquetting 2 both sides is connected with upper saddle 11 by screw.
The first acceleration transducer 4 and the second acceleration transducer 5 are piezoelectric acceleration transducer.
The method that uses high-frequency vibration aging system to eliminate small size component unrelieved stress comprises the following steps:
(1), manufacture grade multiplying arrangement 1 that shakes, grade multiplying arrangement 1 that shakes comprises saddle 11, be fixed on low bottom-disc 12 and the connecting rod 13 that is connected saddle 11 and low bottom-disc 12 on exciting table top 6, the section area of connecting rod 13 is less than the section area of saddle 11, and the section area of connecting rod 13 is less than the section area of low bottom-disc 12;
(2), manufacture U-shaped briquetting 2, briquetting 2 comprises that U-lag 21 and the pressing table 22 of both sides form, between the degree of depth h (mm) of U-lag 21 and the thickness d (mm) of small size component 3, meet h<d, on pressing table 22, have open holes 23, U-shaped groove 21 is for installing small size component 3, and pressing table 22 is pressed in upper saddle 11 by screw by small size component 3;
(3), by small size component 3 clampings at upper saddle 11; The second acceleration transducer 5 is arranged on to upper saddle 11, the first acceleration transducers 4 and is arranged on low bottom-disc 12; Low bottom-disc 12 is fixed on the exciting table top 6 of shaking table, and low bottom-disc 12 is connected by connecting rod 13 with upper saddle 11; Connect the signal link between treater and signal generator and oscilloscope; Signal link between connection signal producer and power amplifier; Connect the signal link between acceleration transducer and charge amplifier; Connect the signal link between charge amplifier and oscilloscope; Connect the power supply of treater, power amplifier, signal generator, charge amplifier, oscilloscope, shaking table;
(4), determine the excited frequency of the high-frequency vibration timeliness of signal generator output
f;
(5), slowly the gain knob of regulating power amplifier makes power amplifier export constant electric current I, drives shaking table to carry out high-frequency vibration ageing treatment to small size component 3, until the amplitude stability of the voltage waveform showing on oscilloscope.
In step (4), determine the high-frequency vibration timeliness excited frequency of signal generator output
fcomprise the following steps:
(4.1) the initial excitation frequency of signal generator
f 0be set to 1000 Hz, then progressively increase the output frequency of signal generator take 100 Hz as step-length; Slowly the gain knob of regulating power amplifier makes power amplifier export constant electric current I; The output of the shaking table level of shaking when treater is recorded respectively each excitation frequency
a 1with the output of grade multiplying arrangement 1 that the shakes level of shaking
a 2; Treater calculates grade ratio that shakes of each excitation frequency
, a grade ratio obtains shaking
frequency when maximum; This frequency under processor for recording, and be designated as
f 1;
(4.2) the initial excitation set of frequency of signal generator be (
f 1-100) Hz, progressively increases the output frequency of signal generator take 10 Hz as step-length, the then process of repeating step (4.1), and a grade ratio obtains shaking
frequency when maximum; This frequency under processor for recording, and be designated as
f 2;
(4.3) the initial excitation set of frequency of signal generator be (
f 2-10) Hz, progressively increases the output frequency of signal generator take 1 Hz as step-length, the then process of repeating step (4.1), and a grade ratio obtains shaking
frequency when maximum; This frequency under processor for recording, and be designated as
f 3, be the excited frequency of high-frequency vibration timeliness
f.
To Fig. 4 a, the Cr12MoV quenching small size component 3 in 4b carries out the processing of high-frequency vibration elimination unrelieved stress.The length of this small size component 3 is 60mm, and width is 20mm, and thickness is 6mm.The excited frequency that obtains high-frequency vibration timeliness according to the determining step of high-frequency vibration timeliness excitation frequency is 2060 Hz,
xaxially unrelieved stress before and after high-frequency vibration,
yaxially unrelieved stress before and after high-frequency vibration, and
xwith
yaxially before and after high-frequency vibration, residual stress relief ratio is shown in respectively Fig. 5 a, Fig. 5 b and Fig. 5 c.
Content described in this specification sheets embodiment is only enumerating of way of realization to utility model design; protection domain of the present utility model should not be regarded as only limiting to the specific form that embodiment states, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (5)
1. for eliminating the high-frequency vibration aging system of small size component unrelieved stress, it is characterized in that: comprise signal generator, power amplifier, shaking table, a grade multiplying arrangement, charge amplifier, oscilloscope and treater shake; The sinusoidal excitation signal that treater control signal producer output amplitude and frequency all can independently and continuously regulate; Sinusoidal excitation signal is through power amplifier inputted vibration platform;
Grade multiplying arrangement that shakes is fixed on the exciting table top of shaking table moving parts, and grade multiplying arrangement that shakes comprises saddle, is fixed on low bottom-disc and the connecting rod that is connected saddle and low bottom-disc on exciting table top; The section area of connecting rod is less than the section area of saddle, and the section area of connecting rod is less than the section area of low bottom-disc;
The first acceleration transducer is installed on low bottom-disc, the second acceleration transducer is installed on saddle, the first acceleration transducer is connected with the first input channel of charge amplifier, the second acceleration transducer is connected with the second input channel of charge amplifier, two output channels of charge amplifier are connected with oscilloscope respectively, and oscilloscope is connected with treater.
2. as claimed in claim 1 for eliminating the high-frequency vibration aging system of small size component unrelieved stress, it is characterized in that: the size of small size component is less than the diameter of saddle.
3. as claimed in claim 2 for eliminating the high-frequency vibration aging system of small size component unrelieved stress, it is characterized in that: small size component is clamped in the upper saddle of grade multiplying arrangement that shakes by briquetting, briquetting middle part is provided with U-lag, small size component is pressed between U-lag and upper saddle, briquetting by screw in compression in upper saddle.
4. as claimed in claim 3 for eliminating the high-frequency vibration aging system of small size component unrelieved stress, it is characterized in that: briquetting is U-shaped piece, the pressing table of briquetting both sides is connected with upper saddle by screw.
5. as claimed in claim 4 for eliminating the high-frequency vibration aging system of small size component unrelieved stress, it is characterized in that: the first acceleration transducer and the second acceleration transducer are piezoelectric acceleration transducer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049305.7U CN203683616U (en) | 2014-01-25 | 2014-01-25 | High-frequency vibration aging system for removing residual stress of small-size member |
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| CN201420049305.7U CN203683616U (en) | 2014-01-25 | 2014-01-25 | High-frequency vibration aging system for removing residual stress of small-size member |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757197A (en) * | 2014-01-25 | 2014-04-30 | 浙江大学 | High-frequency vibration aging system and method for eliminating residual stress of small-size component |
| CN105861811A (en) * | 2016-04-28 | 2016-08-17 | 上海海事大学 | Online quantitative evaluation system and method for vibration aging effect |
-
2014
- 2014-01-25 CN CN201420049305.7U patent/CN203683616U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757197A (en) * | 2014-01-25 | 2014-04-30 | 浙江大学 | High-frequency vibration aging system and method for eliminating residual stress of small-size component |
| 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 |
| CN105861811A (en) * | 2016-04-28 | 2016-08-17 | 上海海事大学 | Online quantitative evaluation system and method for vibration aging effect |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20160125 |
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| EXPY | Termination of patent right or utility model |