CN202361996U - Connection reliability detecting system for laser gyro frequency stabilizing component - Google Patents
Connection reliability detecting system for laser gyro frequency stabilizing component Download PDFInfo
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- CN202361996U CN202361996U CN2011203556726U CN201120355672U CN202361996U CN 202361996 U CN202361996 U CN 202361996U CN 2011203556726 U CN2011203556726 U CN 2011203556726U CN 201120355672 U CN201120355672 U CN 201120355672U CN 202361996 U CN202361996 U CN 202361996U
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- laser gyro
- frequency stabilization
- connection reliability
- stabilization assembly
- piezoelectric ceramic
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Abstract
The utility model belongs to detecting techniques, in particular relates to a connection reliability detecting system for a laser gyro frequency stabilizing component. The connection reliability detecting system for a laser gyro frequency stabilizing component comprises of a piezoelectric ceramic sheet, a low expansion alloy, an ultrasonic probe and an ultrasonic emission reception system data acquisition system, a motion scanning system, wherein the piezoelectric ceramic sheet and the low expansion alloy are connected by a metal solder to become the frequency stabilizing component. The metal solder is obtained through processing of heating treatment from 20 DEG C to 100 DEG C for 3 minutes, then high temperature processing of 100 DEG C for 1 minute, next heating treatment from 100DEG C to 160 DEG C for 3 minutes, and then high temperature processing of 160 DEG C for 1 minute and temperature treatment with cooling of a heating equipment. The utility model uses the ultrasonic scanning of the connection status of the connecting surface between the piezoelectric ceramic sheet and the low expansion alloy, which can carry out defect location and qualitative analysis. The detection of defects is accurate and reliable without any damage to the frequency stabilizing component, and has convenient operation and high efficiency.
Description
Technical field
The utility model belongs to detection technique, especially about a kind of detection system of laser gyro frequency stabilization assembly connection reliability.
Background technology
Laser gyro is a kind of optical measurement device of precision, and in order to guarantee measuring accuracy, it requires in work total temperature scope, to keep resonance frequency stable.Laser gyro frequency stabilization assembly is to be used for a kind of desirable micrometric displacement device of stable resonator mode of operation frequency in the laser gyro; It is attached on the cavity mirror; Requirement according to control circuit is carried out the micrometric displacement push-and-pull to catoptron; The real-Time Compensation that realization is long to the resonator cavity chamber, and then accomplish control circuit stable to laser gyro resonator cavity mode of operation frequency, because laser gyro is a high precision angle displacement measurement sensor; It is very high that resonator cavity mode of operation frequency stability requires, and laser gyro life-span and reliability also have very high requirement.Therefore frequency stabilization assembly connection reliability has significant effects to laser gyro precision and reliability performance.The frequency stabilization assembly generally is made up of piezo ceramic element and low-expansion alloy parts; Being connected the size of area, the height of strength of joint etc. between piezo ceramic element and the low-expansion alloy is the determinative that influences frequency stabilization assembly connection reliability, and frequency stabilization assembly connection reliability has significant effects to laser gyro precision and reliability performance.In order to guarantee laser gyro precision and reliability, must the connection reliability of frequency stabilization assembly be detected.
In the actual production, for the detection of large batch of frequency stabilization assembly quality of connection, take certain proportion sampling destructiveness to peel off detection, the consequence that causes generally: on the one hand, the frequency stabilization assembly to be caused irreversible destruction, caused the frequency stabilization assembly function to lose efficacy; On the other hand, can not detect one by one, possibly have the hidden danger of inherent vice whole frequency stabilization assemblies.When laser gyro under various harsh environmental conditions during long-term work; If inner certain defective that exists in junction; Strength of joint can significantly descend under vibration environment between frequency stabilization assembly and the devitrified glass; Thereby have a strong impact on the frequency stabilization assembly compensation ability long, cause the laser gyro can't operate as normal the laser gyro chamber.
Summary of the invention
The purpose of the utility model is: provide a kind of easy to operate, the laser gyro frequency stabilization assembly connection reliability detection system that detection efficiency is high, safe and reliable.
The technical scheme of the utility model is: a kind of laser gyro frequency stabilization assembly connection reliability detection system; It comprises piezoelectric ceramic piece, low-expansion alloy, ultrasonic probe and ultrasound emission receiving system data acquisition system (DAS), motion scanning system; Wherein, Said piezoelectric ceramic piece and low-expansion alloy are the brazing metal frequency stabilization assembly that is formed by connecting; Said ultrasonic probe 5 is placed in the water frequency stabilization assembly top 0.2 to the 0.3mm place, and links to each other with motion scanning system 7 with ultrasound emission receiving system data acquisition system (DAS) 6.
Said brazing metal is the low-temperature metal scolder of 0.49 to 0.51 micron of thickness.
Said brazing metal thickness is 0.5 micron.
Said piezoelectric ceramics is provided with the loading balancing weight.
The utility model has the advantages that: accomplish good connection the between the two through the metal solder fusing of taking distinct temperature to handle between the utility model laser gyro frequency stabilization assembly piezo ceramic element and the low-expansion alloy; Make scolder handle and to be distributed in effectively and uniformly down between piezo ceramic element closes into low bulk, and be difficult for generation at connection procedure and be harmful to stress at specified temp.During detection; Ultrasound wave can be scurried the metal solder easily, the ultrasound information that receives is analyzed, and compared with the ultrasonography of qualified frequency stabilization assembly; Can conveniently pass judgment on the connection reliability of frequency stabilization assembly; It is simple to operate, and precision is high, and can significantly improve detection efficiency.
Description of drawings
Fig. 1 is the principle schematic of the utility model laser gyro frequency stabilization assembly connection reliability detection system one preferred embodiments;
Fig. 2 is the enlarged drawing of measured piece among Fig. 1;
Wherein, 1-piezoelectric ceramic piece, 2-low-expansion alloy, 3-brazing metal, 4-load balancing weight, 5-ultrasonic probe, 6-ultrasound emission receiving system data acquisition system (DAS), 7-motion scanning system, 8-industrial computer.
Embodiment
Explain further details in the face of the utility model down.
Please consult Fig. 1 and Fig. 2 simultaneously, wherein, Fig. 1 is the principle schematic of the utility model laser gyro frequency stabilization assembly connection reliability detection system one preferred embodiments, and Fig. 2 is the enlarged drawing of measured piece among Fig. 1.Wherein, said laser gyro frequency stabilization assembly connection reliability detection system comprises piezoelectric ceramic piece 1, low-expansion alloy 2, brazing metal 3, loads balancing weight 4 and ultrasonic probe 5, ultrasound emission receiving system data acquisition system (DAS) 6, motion scanning system 7 and industrial computer 8.Said piezoelectric ceramic piece 1 and low-expansion alloy 2 are formed by connecting the brazing metal that is arranged between the two, constitute tested frequency stabilization assembly.Said loading balancing weight 4 is arranged on the piezoelectric ceramic piece 1, so that piezoelectric ceramic piece 1 is exerted pressure, thereby increases the effect that is connected between piezoelectric ceramic piece 1 and the low-expansion alloy 2.Said ultrasonic probe 5 is placed in the water frequency stabilization assembly top 0.2 to 0.3mm place, and links to each other with ultrasound emission receiving system data acquisition system (DAS) 6, through the generation ultrasound wave, the connection reliability of the brazing metal in the frequency stabilization assembly is detected.Wherein, Said brazing metal is the low-temperature metal scolder, and thickness is 0.49 to 0.51 micron, preferred 0.5 micron; And said brazing metal is to carry out spending to the hyperthermic treatment of 100 degree from 20 in three minutes earlier; One minute 100 degree pyroprocessing were then spent to 170 degree hyperthermic treatments in three minutes 100 then, were again one minute 170 degree pyroprocessing and the Temperature Treatment of lowering the temperature with firing equipment then.
During the work of the utility model laser gyro frequency stabilization assembly connection reliability detection system, the joint face to piezoelectric ceramic piece 1 and low-expansion alloy 2 cleans earlier; Joint face at low-expansion alloy 2 is placed diameter and piezoelectric ceramic piece 1 corresponding brazing metal 3; Be placed on piezoelectric ceramic piece 1 on the low-expansion alloy 2, make both, on piezoelectric ceramic piece 1, load balancing weight 4 then all near brazing metal 3 (circular eutectic welding tin material); Under hot environment, metal solder 3 is carried out Temperature Treatment; Make fusing connect and connection piezoelectric ceramic piece 1 and low-expansion alloy 2; Wherein, the Temperature Treatment of said brazing metal 3 comprise three minutes from 20 spend to 100 the degree hyperthermic treatment, then one minute 100 the degree pyroprocessing; Then spent in three minutes 100 to 170 degree hyperthermic treatments, be again one minute 170 degree pyroprocessing then and lower the temperature with firing equipment; Then ultrasonic probe 5 is placed in the water frequency stabilization assembly top 0.2 to the 0.3mm place; And link to each other with motion scanning system 7 with ultrasound emission receiving system data acquisition system (DAS) 6; Receive the sound wave that the frequency stabilization assembly is launched and passed to ultrasonic probe 5 by ultrasound emission receiving system data acquisition system (DAS) 6; Ultrasound information to receiving is analyzed, and compares with the ultrasonography of qualified frequency stabilization assembly, can conveniently pass judgment on the connection reliability of frequency stabilization assembly.
In addition, the utility model can also be done certain adjustment, and particularly the thickness of eutectic welding tin material, temperature are not limited to mentioning in this embodiment, can also can in certain thickness, temperature range, adjust according to actual needs.
The utility model laser gyro frequency stabilization assembly piezo ceramic element is accomplished good connection the between the two with the method for attachment that low bulk closes into through taking the fusing of metal solder in sum, is difficult for producing harmful stress, and utilizes the scanning of ultrasound wave to piezo ceramic element and low-expansion alloy joint face connection status; Can realize the location and qualitative the analysing of defective; Detect defective accurately and reliably, peel off to detect with traditional destructiveness and compare, can not cause any damage the frequency stabilization assembly; Reached reliable, economic, safe effect; And reduced manufacturing cost, easy to operate, efficient is high.In addition; Metal is connected good stability under the laser gyro work total temperature; Reliability is high in the long change procedure in chamber due to the frequency stabilization assembly compensation temperature; Can effectively improve the whole reliability that connects, thereby help the resonator cavity chamber variation that effective compensate for ambient temperature is accurately and stably caused, improve the laser gyro performance.
Claims (4)
1. laser gyro frequency stabilization assembly connection reliability detection system; It is characterized in that: comprise piezoelectric ceramic piece [1], low-expansion alloy [2], ultrasonic probe [5] and ultrasound emission receiving system data acquisition system (DAS) [6], motion scanning system [7]; Wherein, Said piezoelectric ceramic piece [1] and low-expansion alloy [2] are the brazing metal frequency stabilization assembly that is formed by connecting; Said ultrasonic probe [5] is placed in the water frequency stabilization assembly top 0.2 to the 0.3mm place, and links to each other with motion scanning system [7] with ultrasound emission receiving system data acquisition system (DAS) [6].
2. laser gyro frequency stabilization assembly connection reliability detection system according to claim 1 is characterized in that: said brazing metal [3] is the low-temperature metal scolder of 0.49 to 0.51 micron of thickness.
3. laser gyro frequency stabilization assembly connection reliability detection system according to claim 2, it is characterized in that: said brazing metal [3] thickness is 0.5 micron.
4. according to each described laser gyro frequency stabilization assembly connection reliability detection system of claim 1 to 3, it is characterized in that: said piezoelectric ceramics is provided with and loads balancing weight [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203556726U CN202361996U (en) | 2011-09-19 | 2011-09-19 | Connection reliability detecting system for laser gyro frequency stabilizing component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203556726U CN202361996U (en) | 2011-09-19 | 2011-09-19 | Connection reliability detecting system for laser gyro frequency stabilizing component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202361996U true CN202361996U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203556726U Expired - Fee Related CN202361996U (en) | 2011-09-19 | 2011-09-19 | Connection reliability detecting system for laser gyro frequency stabilizing component |
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| Country | Link |
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| CN (1) | CN202361996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713537A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Frequency stabilization control method for effectively enlarging temperature-variable frequency stabilization adjusting range of laser gyro |
-
2011
- 2011-09-19 CN CN2011203556726U patent/CN202361996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713537A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Frequency stabilization control method for effectively enlarging temperature-variable frequency stabilization adjusting range of laser gyro |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120801 Termination date: 20180919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |