CN106546397A - Spring mechanical performance evaluation instrument - Google Patents
Spring mechanical performance evaluation instrument Download PDFInfo
- Publication number
- CN106546397A CN106546397A CN201710016008.0A CN201710016008A CN106546397A CN 106546397 A CN106546397 A CN 106546397A CN 201710016008 A CN201710016008 A CN 201710016008A CN 106546397 A CN106546397 A CN 106546397A
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- China
- Prior art keywords
- spring
- drag hook
- extension spring
- pressure head
- control box
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of spring mechanical performance evaluation instrument, including electronic-control box；SR and testing button Metal snap are provided with before electronic-control box；KK precision linears module is vertically located above electronic-control box, stage clip pressure head is fixedly connected with drag hook under extension spring and is arranged on KK precision linear modules, in extension spring, drag hook is located at the surface of drag hook under extension spring, and rotatable spring fixed seat is arranged on position corresponding with stage clip pressure head on electronic-control box；Touch screen above electronic-control box is by drag hook control connection under servo-driver, servomotor, shaft coupling, drag chain and stage clip pressure head and extension spring；Laser distance sensor is arranged on the bottom of KK precision linear modules, and tension-compression sensor is arranged under stage clip pressure head and extension spring on drag hook.The test of the spring of the suitable multiple diameter of the present invention and length, convenient mounting and clamping, can auto-manual switch test, and can effective torsional deformation of the long spring of correcting in compression process, there is measuring accuracy height, be active in one's movements.
Description
Technical field
The present invention relates to mechanical equipment technical field, specifically a kind of spring mechanical performance evaluation instrument.
Background technology
At present in machinery industry especially non-standard automatic equipment aspect, the extension spring and compression bullet of various models can be used
Spring, while people are more and more extensive to the demand of spring, also gradually pays close attention to the characteristic and quality of spring.It is existing at present
Test equipment have two kinds：
1st, type hand, though it is cheap, people's manual operation is leaned on completely, error is larger, is unsuitable for multi items and high-volume is tested；
2nd, automatic type, is moved with PLC circuit controlled motor.Though this equipment automaticity is higher, but to multi items spring
Clamping not enough facilitate, it is difficult to avoid the torsional deformation during long spring-compressed, and industrial computer to be connected by port, into
This height and wasting space.
The content of the invention
It is an object of the invention to provide a kind of convenient mounting and clamping, can auto-manual switch test, measuring accuracy be high, action spirit
Quick spring mechanical performance evaluation instrument, can effective torsional deformation of the long spring of correcting in compression process.
For achieving the above object, the present invention provides following technical scheme：
Spring mechanical performance evaluation instrument, including servomotor, shaft coupling, drag chain, KK precision linear modules, laser distance sensing
Device, rotatable spring fixed seat, electronic-control box, Metal snap, servo-driver, tension-compression sensor, stage clip pressure head, extension spring are drop-down
Drag hook and touch screen on hook, extension spring；Two Metal snaps, respectively SR and survey are provided with before described electronic-control box
Examination button；Described KK precision linear modules are vertically arranged in the top of electronic-control box, and described stage clip pressure head and extension spring are drop-down
Hook is fixedly connected and is arranged on KK precision linear modules, and described stage clip pressure head is located at the underface of drag hook under extension spring, described
Extension spring on drag hook be located at the surface of drag hook under extension spring, described rotatable spring fixed seat is arranged on electronic-control box upper surface
At the position corresponding with stage clip pressure head；The outfan of described servomotor is connected with one end of shaft coupling, described shaft coupling
The other end of device is connected with drag chain, described drag chain and stage clip pressure head and the drop-down hook connects of extension spring, for drag stage clip pressure head with
Under extension spring, drag hook is slided up and down along KK precision linear modules, the input of described servomotor and the outfan of servo-driver
Connection, the input of described servo-driver are connected with touch screen control, and described touch screen is located at the top of electronic-control box；
Described laser distance sensor is fixedly mounted on the bottom of KK precision linear modules, drop-down for measuring stage clip pressure head, extension spring
The distance of hook movement；Described tension-compression sensor is fixedly mounted under stage clip pressure head and extension spring on drag hook, for measuring stage clip pressure
Pulling force under pressure, extension spring on head on drag hook.
As further scheme of the invention：Described rotatable spring fixed seat include rotating disk, base, check pin,
Hand pressure shell fragment, described rotating disk and check pin are arranged on base, and described hand pressure shell fragment is arranged on the close locking of base
On one side of pin, described hand pressure shell fragment is connected to control the rotatory of rotating disk with check pin；Described rotating disk
Upper surface offers various sizes of spring putting hole, for placing various sizes of spring, described disk lower surface correspondence
Magnet installing hole is offered at each spring putting hole, the spring being put into for absorption in spring putting hole, described rotating disk
Axle center be rotatably connected with base by thrust ball bearing and deep groove ball bearing.
As further scheme of the invention：Described stage clip pressure head includes movable guide pillar and auxiliary platen, described
Movable guide pillar is arranged on inside auxiliary platen and moves up and down along auxiliary platen, prevents spring distortion when pushing.
As further scheme of the invention：Under described extension spring, in drag hook and extension spring, drag hook includes that drag hook and auxiliary are drawn
Hook, is provided with groove along drag hook wrap direction at the top of drag hook, arranges alignment pin along groove vertical direction, and alignment pin is fixed on through groove
On drag hook, described groove, alignment pin constitute auxiliary drag hook.
As further scheme of the invention：Model MSMD012G1D of described servomotor, described shaft coupling
Model CPOC20-6-8, model KK6010C-200A1-F0 of described KK precision linear modules, described laser away from
From model MLD33-120N-422 of sensor, model MADKT1505E of described servo-driver, described tension and compression
Model XJC-S09-A-OP of sensor.
As further scheme of the invention：The left side of described electronic-control box is provided with draw ring and louvre, and the right side is provided with
Scram button, draw ring and louvre, behind be provided with GND grounding ports, USB interface, on and off switch and supply socket.
As further scheme of the invention：Described scram button is Metal snap.
As further scheme of the invention：Also there is outer housing, for by servomotor, shaft coupling on described electronic-control box
Device, drag chain, KK precision linear modules, laser distance sensor, servo-driver, tension-compression sensor are covered, and are only exposed rotatable
Spring fixed seat, electronic-control box, Metal snap, stage clip pressure head, drag hook under extension spring, drag hook in extension spring；Described touch screen is very little
Touch screen, installed in shroud surface, for arrange parameter and display test result.
As further scheme of the invention：Buzzer is additionally provided with described electronic-control box, is connected with touch screen control
Connect.
As further scheme of the invention：The panel beating material that described outer housing and electronic-control box are adopted.
Compared with prior art, the invention has the beneficial effects as follows：
The test of the spring of the suitable multiple diameter of the present invention and length, convenient mounting and clamping, can auto-manual switch test, and can be effective
Torsional deformation of the long spring of correcting in compression process, has the advantages that measuring accuracy is high, is active in one's movements.The present invention is without the need for industry control
Test data by automatic-touch screen with regard to the real-time power output of energy to displacement curve chart, and can be stored and be read by machine.
Present invention is especially suited for the large batch of spring performance detection of multi items, and the life test of spring, and data
It is rather easy to read and store.The present invention greatly improves the automaticity of equipment, reduces error hand-manipulated, improves
The precision and concordance of product, substantially increases production efficiency, reduces cost.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of rotatable spring fixed seat；
Fig. 3 is the side cross sectional views of rotating disk；
Fig. 4 is the structural representation one of stage clip pressure head；
Fig. 5 is the structural representation two of stage clip pressure head；
Fig. 6 is the structural representation of drag hook under extension spring；
Fig. 7 is the mplifying structure schematic diagram that Fig. 6 encloses part；
Fig. 8 is the workflow schematic diagram one of the present invention；
Fig. 9 is the workflow schematic diagram two of the present invention；
In figure：1- servomotors, 2- shaft couplings, 3- drag chains, 4-KK precision linear modules, 5- laser distance sensors, 6- can revolve
Turn spring fixed seat, 7- electronic-control boxs, 8- Metal snaps, 9- servo-drivers, 10- tension-compression sensors, 11- stage clip pressure heads, 12-
On drag hook under extension spring, 13- extension springs, drag hook, 14- rotating disks, 15- bases, 16- check pins, 17- hand pressure shell fragments, 18- springs are placed
Hole, 19- Magnet installing holes, 20- thrust ball bearings, 21- deep groove ball bearings, the movable guide pillars of 22-, 23- auxiliary platens, 24- draw
Hook, 25- auxiliary drag hooks.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based in the present invention
Embodiment, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art, all
Belong to the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1, in the embodiment of the present invention, spring mechanical performance evaluation instrument, including servomotor 1, shaft coupling 2, drag chain 3,
KK precision linears module 4, laser distance sensor 5, rotatable spring fixed seat 6, electronic-control box 7, Metal snap 8, servo drive
Drag hook 13 and touch screen on drag hook 12, extension spring under dynamic device 9, tension-compression sensor 10, stage clip pressure head 11, extension spring；Before electronic-control box 7
Face is provided with two Metal snaps 8, respectively SR and testing button；The left side of electronic-control box 7 is provided with draw ring and louvre,
The right side of electronic-control box 7 is provided with scram button, draw ring and louvre, and scram button is also Metal snap；Behind electronic-control box 1
It is provided with GND grounding ports, USB interface, on and off switch and supply socket；KK precision linears module 4 is vertically arranged in electronic-control box 7
Top, stage clip pressure head 11 be fixedly connected with drag hook under extension spring 12 and be arranged on KK precision linears module 4 on, stage clip pressure head 11
The underface of drag hook 12 under extension spring, in extension spring, drag hook 13 is located at the surface of drag hook 12 under extension spring, rotatable spring fixed seat 6
At 7 upper surface of the electronic-control box position corresponding with stage clip pressure head 11；The outfan of servomotor 1 and shaft coupling 2
One end connects, and the other end of shaft coupling 2 is connected with drag chain 3, and drag chain 3 is connected with drag hook 12 under stage clip pressure head 11 and extension spring, is used for
Drag stage clip pressure head 11 to slide up and down along KK precision linears module 4 with drag hook under extension spring 12, the input and servo of servomotor 1
The outfan connection of driver 9, the input of servo-driver 9 are connected with touch screen control, and touch screen is located at electronic-control box 7
Top；Laser distance sensor 5 is fixedly mounted on the bottom of KK precision linears module 4, for measuring under stage clip pressure head 11, extension spring
The distance of the movement of drag hook 12；Tension-compression sensor 10 is fixedly mounted under stage clip pressure head 11 and extension spring on drag hook 12, for measuring pressure
Pulling force under pressure, extension spring on spring pressure head 11 on drag hook 12.
Preferably, model MSMD012G1D of servomotor 1, model CPOC20-6-8 of shaft coupling 2, KK Precision wires
Property module 4 model KK6010C-200A1-F0, model MLD33-120N-422 of laser distance sensor 5, servo drive
Model MADKT1505E of dynamic device 9, model XJC-S09-A-OP of tension-compression sensor 10.Touch screen uses 7 cun and touches
Screen is touched, for arrange parameter and display test result.
Additionally, also there is on electronic-control box 7 outer housing, for by servomotor 1, shaft coupling 2, drag chain 3, KK precision linear moulds
Group 4, laser distance sensor 5, servo-driver 9, tension-compression sensor 10 are covered, and only expose rotatable spring fixed seat 6, automatically controlled
Drag hook 13 on drag hook 12, extension spring under casing 7, Metal snap 8, stage clip pressure head 11, extension spring, specifically, outer housing be divided into test section and
Analysis area on the right of which, touch screen are arranged on the main-vision surface of analysis area, are additionally provided with buzzer, buzzing in the upper right side of touch screen
Device is connected with touch screen control, for alarm.The panel beating material that outer housing and electronic-control box 7 are adopted.
Fig. 2～3 are referred to, rotatable spring fixed seat 6 includes rotating disk 14, base 15, check pin 16, hand pressure shell fragment
17, rotating disk 14 and check pin 16 are arranged on base 15, and hand pressure shell fragment 17 is arranged on the close check pin 16 of base 15
On one side, hand pressure shell fragment 17 is connected to control the rotatory of rotating disk 14 with check pin 16；14 upper surface of rotating disk is opened up
There is various sizes of spring putting hole 18, for placing various sizes of spring（Such as Φ 2, Φ 3, Φ 4, Φ 5, Φ 6, Φ 8,
Φ 10, Φ 12, Φ 16, Φ 20 etc.）, 14 lower surface of rotating disk is corresponding to offering Magnet installing hole at each spring putting hole 18
19, the spring being put into for absorption in spring putting hole 18, the axle center of rotating disk 14 pass through thrust ball bearing 20 and deep groove ball bearing
21 are rotatably connected with base 14.
Fig. 4～5 are referred to, stage clip pressure head 11 includes movable guide pillar 22 and auxiliary platen 23, and movable guide pillar 22 is arranged
Move up and down inside auxiliary platen 23 and along auxiliary platen 23, spring distortion when pushing can be prevented.
Fig. 6～7 are referred to, drag hook 12 includes drag hook 24 and auxiliary drag hook 25 under extension spring, auxiliary drag hook 25 is arranged on drag hook
24 top, is specifically provided with groove along 24 wrap direction of drag hook at the top of drag hook 24, arranges alignment pin along groove vertical direction, fixed
Position pin is fixed on drag hook 24 through groove, and the groove, alignment pin constitute auxiliary drag hook 25, and wherein drag hook 24 is for large scale extension spring
Use, auxiliary drag hook 25 is used for small size extension spring.Similar with drag hook under extension spring 12, in extension spring, drag hook 13 also includes
Drag hook and auxiliary drag hook.
Fig. 8～9 are referred to, operating process of the invention is divided into following two：
The first, when spring used is compression spring, operating process is as follows：
First, operator is placed on rotatable spring fixed seat 6 compression spring in corresponding spring putting hole 18, and left hand is by assistant
Press shell fragment 17 and compression spring is positioned over right hand rotation rotating disk 14 position directly below of stage clip pressure head 11, unclamping left hand will turn
14 position of disk locks；
2nd, turn on the power switch, equipment is powered, by SR, stage clip pressure head 11 returns zero-bit；
3rd, spring parameter is set in touch screen, after being easy to data search with derive；Input distance to be pushed, by test
Button；
If the 4, manual test, then it is interrupted or the continuous lower mobile button touched on touch screen, now without pressing by test
Button, screen output curve diagram calculate stretch parameter automatically；
5th, by SR, move on stage clip pressure head 11, take out compression spring or carry out second test.
Second, when spring used is extension spring, operating process is as follows：If test extension spring, then will basis
The position of drag hook 12 under the length adjustment extension spring of extension spring, with moving up and down button in handss point touching screen；Bullet will be stretched
The upper and lower hook of spring is hung in extension spring under drag hook 13, extension spring on drag hook 12, is then either automatically or manually tested, was tested
Journey is as stage clip test process；Upper movable button in point touching screen, takes out stretching bullet after spring release elastic force to be tensioned
Spring carries out second test.
The test of the spring of the suitable multiple diameter of the present invention and length, convenient mounting and clamping, can auto-manual switch test, and energy
Effectively torsional deformation of the long spring of correcting in compression process, has the advantages that measuring accuracy is high, is active in one's movements.The present invention need not
Test data by automatic-touch screen with regard to the real-time power output of energy to displacement curve chart, and can be stored and be read by industrial computer.
Present invention is especially suited for the large batch of spring performance detection of multi items, and the life test of spring, and data
It is rather easy to read and store.The present invention greatly improves the automaticity of equipment, reduces error hand-manipulated, improves
The precision and concordance of product, substantially increases production efficiency, reduces cost.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (10)
1. spring mechanical performance evaluation instrument, including servomotor（1）, shaft coupling（2）, drag chain（3）, KK precision linear modules（4）、
Laser distance sensor（5）, rotatable spring fixed seat（6）, electronic-control box（7）, Metal snap（8）, servo-driver（9）、
Tension-compression sensor（10）, stage clip pressure head（11）, drag hook under extension spring（12）, drag hook in extension spring（13）And touch screen；Characterized in that,
Described electronic-control box（7）Before be provided with two Metal snaps（8）, respectively SR and testing button；Described KK
Precision linear module（4）It is vertically arranged in electronic-control box（7）Top, described stage clip pressure head（11）With drag hook under extension spring（12）
It is fixedly connected and is arranged on KK precision linear modules（4）On, described stage clip pressure head（11）Positioned at drag hook under extension spring（12）Just
Lower section, drag hook in described extension spring（13）Positioned at drag hook under extension spring（12）Surface, described rotatable spring fixed seat（6）
Installed in electronic-control box（7）Upper surface and stage clip pressure head（11）At corresponding position；Described servomotor（1）Outfan
With shaft coupling（2）One end connection, described shaft coupling（2）The other end and drag chain（3）Connection, described drag chain（3）With pressure
Spring pressure head（11）With drag hook under extension spring（12）Connection, for dragging stage clip pressure head（11）With drag hook under extension spring（12）Along KK Precision wires
Property module（4）Slide up and down, described servomotor（1）Input and servo-driver（9）Outfan connection, it is described
Servo-driver（9）The control of input and touch screen be connected, described touch screen is positioned at electronic-control box（7）Top；It is described
Laser distance sensor（5）It is fixedly mounted on KK precision linear modules（4）Bottom, for measuring stage clip pressure head（11）, draw
Drag hook under spring（12）Mobile distance；Described tension-compression sensor（10）It is fixedly mounted on stage clip pressure head（11）With drag hook under extension spring
（12）On, for measuring stage clip pressure head（11）On pressure, drag hook under extension spring（12）On pulling force.
2. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that described rotatable spring fixed seat
（6）Including rotating disk（14）, base（15）, check pin（16）, hand pressure shell fragment（17）, described rotating disk（14）And check pin
（16）It is arranged on base（15）On, described hand pressure shell fragment（17）It is arranged on base（15）Close check pin（16）One
On side, described hand pressure shell fragment（17）With check pin（16）It is connected to control rotating disk（14）Rotatory；Described turns
Disk（14）Upper surface offers various sizes of spring putting hole（18）, for placing various sizes of spring, described rotating disk
（14）Lower surface corresponds to each spring putting hole（18）Place offers Magnet installing hole（19）, spring placement is put into for absorption
Hole（18）Interior spring, described rotating disk（14）Axle center pass through thrust ball bearing（20）And deep groove ball bearing（21）With base
（14）It is rotatably connected.
3. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that described stage clip pressure head（11）Including
Movable guide pillar（22）With auxiliary platen（23）, described movable guide pillar（22）It is arranged on auxiliary platen（23）It is internal and along
Auxiliary platen（23）Move up and down, prevent spring distortion when pushing.
4. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that drag hook under described extension spring（12）With
Drag hook in extension spring（13）Include drag hook（24）With auxiliary drag hook（25）, in drag hook（24）Top along drag hook（24）Wrap direction
Groove is provided with, alignment pin is set along groove vertical direction, alignment pin is fixed on drag hook through groove（24）On, described groove, alignment pin structure
Into auxiliary drag hook（25）.
5. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that described servomotor（1）Type
Number be MSMD012G1D, described shaft coupling（2）Model CPOC20-6-8, described KK precision linear modules（4）Type
Number be KK6010C-200A1-F0, described laser distance sensor（5）Model MLD33-120N-422, described servo
Driver（9）Model MADKT1505E, described tension-compression sensor（10）Model XJC-S09-A-OP.
6. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that described electronic-control box（7）A left side
Face is provided with draw ring and louvre, and the right side is provided with scram button, draw ring and louvre, behind be provided with GND grounding ports, USB interface,
On and off switch and supply socket.
7. spring mechanical performance evaluation instrument according to claim 6, it is characterised in that described scram button is pressed for metal
Button.
8. spring mechanical performance evaluation instrument according to claim 1, it is characterised in that described electronic-control box（7）It is upper to go back
With outer housing, for by servomotor（1）, shaft coupling（2）, drag chain（3）, KK precision linear modules（4）, laser distance sensor
（5）, servo-driver（9）, tension-compression sensor（10）Cover, only expose rotatable spring fixed seat（6）, electronic-control box（7）, gold
Category button（8）, stage clip pressure head（11）, drag hook under extension spring（12）, drag hook in extension spring（13）；Described touch screen is（7）Very little touch
Screen, installed in shroud surface, for arrange parameter and display test result.
9. spring mechanical performance evaluation instrument according to claim 8, it is characterised in that described electronic-control box（7）It is upper to go back
Buzzer is provided with, is connected with touch screen control.
10. spring mechanical performance evaluation instrument according to claim 8, it is characterised in that described outer housing and electronic-control box
（7）The panel beating material for adopting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016008.0A CN106546397A (en) | 2017-01-10 | 2017-01-10 | Spring mechanical performance evaluation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016008.0A CN106546397A (en) | 2017-01-10 | 2017-01-10 | Spring mechanical performance evaluation instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106546397A true CN106546397A (en) | 2017-03-29 |
Family
ID=58396339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710016008.0A Pending CN106546397A (en) | 2017-01-10 | 2017-01-10 | Spring mechanical performance evaluation instrument |
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| Country | Link |
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| CN (1) | CN106546397A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682521A (en) * | 2019-01-22 | 2019-04-26 | 苏州工业职业技术学院 | A kind of detection device for elasticity |
| CN111351644A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting mechanical property of annular fuel assembly air cavity spring |
| CN111551325A (en) * | 2020-03-31 | 2020-08-18 | 厦门理工学院 | Spring height precision measurement device |
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| CN105509696A (en) * | 2014-09-25 | 2016-04-20 | 环旭电子股份有限公司 | Spherical surface deflection strain test tool for circuit board |
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| US20130276545A1 (en) * | 2012-04-19 | 2013-10-24 | Hon Hai Precision Industry Co., Ltd. | Measurement apparatus for measuring elasticity coefficient of coil spring |
| CN203231881U (en) * | 2013-05-14 | 2013-10-09 | 成都晨晖弹簧制造有限公司 | Digital-display instrument for testing pull or pressure of spring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111351644A (en) * | 2018-12-20 | 2020-06-30 | 中核北方核燃料元件有限公司 | Device and method for detecting mechanical property of annular fuel assembly air cavity spring |
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Application publication date: 20170329 |
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