CN106405130A - Automatic rigidity test system and test method - Google Patents
Automatic rigidity test system and test method Download PDFInfo
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- CN106405130A CN106405130A CN201611039449.4A CN201611039449A CN106405130A CN 106405130 A CN106405130 A CN 106405130A CN 201611039449 A CN201611039449 A CN 201611039449A CN 106405130 A CN106405130 A CN 106405130A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
- G01N35/00613—Quality control
- G01N35/00623—Quality control of instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
- G01N35/00693—Calibration
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Abstract
The invention discloses an automatic rigidity test system and a measurement method. The automatic rigidity test system comprises a moving workbench, a force applying device, a stationary fixture and a controller, wherein the force applying device and the stationary fixture are both arranged on the moving workbench; the stationary fixture is arranged on one side of the force applying device; a force sensor and a displacement sensor are arranged on the force applying device and connected with the controller respectively; and in a test, a to-be-tested workpiece is fixed on the stationary fixture, and the force applying device applies pressure to the to-be-tested workpiece. The displacement values at a measurement point in different force values are recorded and acquired in real time, the compensation of the equipment deformation is realized, and the average value of multiple groups of data can be measured automatically, so that the measurement result is more accurate.
Description
Technical field
The present invention relates to test equipment technical field is and in particular to a kind of automate rigid test system and method for testing.
Background technology
Existing scheme is that force value, shift value separately measure.Object space when recording afterburning 0 N first is it is simply that record applies
To the object space setting during force value；There is error in existing measuring method object space when recording afterburning 0 N, because 0 N of position
Put and be not easy to catch；Besides because the process being applied to setting force value is not easily controlled it is easy to exceed setting force value, survey
Obtain data error also than larger.
Content of the invention
The technical problem to be solved in the present invention is, in view of the foregoing defects the prior art has, there is provided a kind of automation
Rigid test system and method for testing, real time record and the shift value of measurement point when gathering different force value, realize compensation equipment
Itself deforms, and can measure multi-group data and automatically calculate mean value, make measurement result more accurate.
The present invention be employed technical scheme comprise that by solving above-mentioned technical problem：
A kind of automation rigidity test system, including mobile work platform, force application apparatus, stationary fixture and controller, exerts a force
Device and stationary fixture may be contained within mobile work platform, and stationary fixture is arranged at force application apparatus side, and force application apparatus are provided with
Force snesor and displacement transducer, force snesor and displacement transducer are connected with controller respectively, and during test, workpiece for measurement is fixed
On stationary fixture, force application apparatus apply pressure to workpiece for measurement.
By technique scheme, described mobile work platform includes frame, horizontal moving gear, horizontal longitudinal-moving device and vertically
Mobile device, horizontal moving gear and horizontal longitudinal-moving device may be contained within frame, and vertical shift device is arranged at horizontal shifting
On device, force application apparatus are arranged at vertical shift device, and stationary fixture is arranged on horizontal longitudinal-moving device.
By technique scheme, horizontal moving gear includes first level guide rail, first level slide unit and first level silk
Bar, first level guide rail is horizontally set in frame, and first level slide unit is arranged on first level guide rail, first level screw mandrel
It is connected with first level slide unit, rotation first level screw mandrel drives first level slide unit to move along first level guide rail transverse horizontal
Dynamic, vertical shift device is arranged on first level slide unit.
By technique scheme, the number of first level guide rail is 2, horizontally-parallel is side by side arranged in frame.
By technique scheme, vertical shift device includes upright guide rail, vertical slide unit and vertical screw mandrel, upright guide rail
Lower end is connected with horizontal moving gear, and vertical slide unit is arranged on upright guide rail, and vertical screw mandrel is connected with vertical slide unit, rotary vertically
Raw silk rings bar drives vertical slide unit along upright guide rail vertical shift.
By technique scheme, force application apparatus include trapezoidal screw, fixed block and pressure block, and fixed block is arranged at vertical shifting
On dynamic device, trapezoidal screw is connected with fixed block by screw thread, and trapezoidal screw passes through fixed block, and pressure block is arranged at trapezoidal screw
One end, pressure block is provided with spherical indenter, and the other end of trapezoidal screw is provided with rotary handle, fixed block is additionally provided with Guiding machine
Structure, is provided with guide rod in guiding mechanism, one end of guide rod is connected with fixed block, and displacement transducer is arranged on fixed block, and displacement passes
One end of sensor is connected with fixed block, and force snesor is arranged between spherical indenter and pressure block.
By technique scheme, between fixed block and vertical shift device, it is provided with rotating disk, be can adjust by rotating disk solid
Determine the angle of block.
By technique scheme, horizontal longitudinal-moving device includes the second horizontal guide rail, the second horizontal sliding table and the second level silk
Bar, the second horizontal guide rail is longitudinally disposed in frame, and the second horizontal sliding table is arranged on the second horizontal guide rail, the second horizontal lead screw
It is connected with the second horizontal sliding table, rotation second horizontal lead screw drives the second horizontal sliding table to move along the second horizontal guide rail vertical equity
Dynamic, stationary fixture is arranged on the second horizontal sliding table.
By technique scheme, the number of the second horizontal guide rail is 2, is longitudinally disposed at side by side in frame.
By technique scheme, described control system includes PLC.
The measuring method implemented using the rigid test system of above-described automation, is comprised the following steps：
1) pass through controller and one setting value is set to force value；
2) select on stationary fixture from measuring point, operate force application apparatus a little to exert a force to testing oneself, repeatedly tested oneself, often
The secondary power being applied when testing oneself all exceedes setting value；
3) controller passes through displacement transducer, and collection is when the value that force snesor detects reaches setting value from the position of measuring point
Shifting value, the mean value of shift value of repeatedly testing oneself sought automatically by controller, and the rigidity obtaining the rigid test system of described automation becomes
Shape amount, that is, compensate deflection, be first group of data；
4) workpiece for measurement is fixed on stationary fixture, workpiece for measurement selectes measurement point, adjust force application apparatus and consolidate
The relative position of clamp tool；
5) take multiple measurements in measurement point, the power being applied when measuring every time all exceedes setting value；
6) controller passes through displacement transducer, the position of collection measurement point when the value that force snesor detects reaches setting value
Shifting value, the multiple mean value measuring shift value sought automatically by controller, obtains measurement point deflection, is second group of data；
7) measurement point deflection is made the difference the practical distortion amount trying to achieve measurement point, i.e. conclusion with compensating deflection by controller
Value.
The invention has the advantages that：
1st, controller passes through the position of measurement point when force snesor and displacement transducer, real time record and collection different force value
Shifting value, in measurement, sets setting value by controller to the power applying, when operating personnel are applied by force application apparatus
Power exceedes setting value, and controller will gather transient data when reaching setting value, automatically be compared and analyze, it is to avoid need
Want manual operation to reach corresponding setting value, reduce error, also can achieve compensation equipment deformation itself, multi-group data can be measured
Automatically calculate mean value, make measurement result more accurate.
2nd, pass through horizontal moving gear, horizontal longitudinal-moving device and vertical shift device up and down, three directions around
Motor adjustment measurement module and the relative position of measurement point, because trapezoidal screw has auto-lock function, after handwheel is adjusted in place
Need not be locked.
Brief description
Fig. 1 is the structural representation automating rigid test system in the embodiment of the present invention；
Fig. 2 is the structural representation of force application apparatus in the embodiment of the present invention；
Fig. 3 is the structural representation that in the embodiment of the present invention, force application apparatus are arranged on vertical shift device；
Fig. 4 is the display image of the Real-time Collection value of displacement and power during measurement in the embodiment of the present invention；
In figure, 1- frame, 2- first level guide rail, 3- first level slide unit, 4- first level screw mandrel, 5- upright guide rail,
The vertical slide unit of 6-, the vertical screw mandrel of 7-, 8- trapezoidal screw, 9- fixed block, 10- pressure block, 11- spherical indenter, 12- displacement sensing
Device, 13- force snesor, 14- guide rod, 15- guiding mechanism, 16- rotating disk, 17- second horizontal guide rail, 18- second horizontal sliding table,
19- second horizontal lead screw, 20- rotary handle, 21- stationary fixture.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
With reference to shown in Fig. 1～Fig. 4, the rigid test system of the automation in the embodiment that the present invention provides, including shifting
Start building station, force application apparatus, stationary fixture and controller, force application apparatus and stationary fixture may be contained within mobile work platform, Gu
Clamp tool is arranged at force application apparatus side, and force application apparatus are provided with force snesor and displacement transducer, and force snesor and displacement pass
Sensor is connected with controller respectively, and during test, workpiece for measurement is fixed on stationary fixture, and force application apparatus apply pressure to workpiece for measurement
Power；Controller passes through the shift value of measurement point when force snesor and displacement transducer, real time record and collection different force value,
During measurement, a setting value is set to the power applying by controller, when operating personnel are exceeded by the power that force application apparatus apply
Setting value, controller will gather transient data when reaching setting value, automatically be compared and analyze, it is to avoid needs artificial
Operation reaches corresponding setting value, reduces error, also can achieve compensation equipment deformation itself, can measure multi-group data and automatically count
Calculate mean value, make measurement result more accurate.
Further, described mobile work platform includes frame, horizontal moving gear, horizontal longitudinal-moving device and vertical shift dress
Put, horizontal moving gear and horizontal longitudinal-moving device may be contained within frame, and vertical shift device is arranged on horizontal moving gear,
Force application apparatus are arranged at vertical shift device, and stationary fixture is arranged on horizontal longitudinal-moving device.
Further, horizontal moving gear includes first level guide rail, first level slide unit and first level screw mandrel, and first
Horizontal guide rail is horizontally set in frame, and first level slide unit is arranged on first level guide rail, first level screw mandrel and first
Horizontal sliding table connects, and rotation first level screw mandrel drives first level slide unit to move along first level guide rail transverse horizontal, vertically
Mobile device is arranged on first level slide unit.
Further, the number of first level guide rail is 2, and horizontal Tile is horizontally-parallel to be arranged in frame.
Further, vertical shift device includes upright guide rail, vertical slide unit and vertical screw mandrel, the lower end of upright guide rail with
Horizontal moving gear connects, and vertical slide unit is arranged on upright guide rail, and vertical screw mandrel is connected with vertical slide unit, rotates vertical thread bar
Drive vertical slide unit along upright guide rail vertical shift.
Further, force application apparatus include trapezoidal screw, fixed block and pressure block, and fixed block is arranged at vertical shift device
On, trapezoidal screw is connected with fixed block by screw thread, and trapezoidal screw passes through fixed block, and pressure block is arranged at the one of trapezoidal screw
End, pressure block is provided with spherical indenter, and the other end of trapezoidal screw is provided with rotary handle, fixed block is additionally provided with guiding mechanism,
It is provided with guide rod, one end of guide rod is connected with fixed block, and displacement transducer is arranged on fixed block, displacement transducer in guiding mechanism
One end be connected with fixed block, force snesor is arranged between spherical indenter and pressure block.
Further, it is provided with rotating disk between fixed block and vertical shift device, fixed block be can adjust by rotating disk
Angle.
Further, rotating disk is provided with regulation handle, can adjust the swing offset of rotating disk by regulation handle.
Further, horizontal longitudinal-moving device includes the second horizontal guide rail, the second horizontal sliding table and the second horizontal lead screw, and second
Horizontal guide rail is longitudinally disposed in frame, and the second horizontal sliding table is arranged on the second horizontal guide rail, the second horizontal lead screw and second
Horizontal sliding table connects, and rotation second horizontal lead screw drives the second horizontal sliding table to move along the second horizontal guide rail vertical equity, fixing
Fixture is arranged on the second horizontal sliding table.
Further, the number of the second horizontal guide rail is 2, and horizontal Tile is longitudinally disposed in frame, fitment
Number is 2, and 2 fitments are respectively arranged on the second horizontal guide rail.
Further, described control system includes PLC.
Further, the end of first level screw mandrel, the second horizontal lead screw and vertical screw mandrel is equipped with rotary handle.
Further, the bottom of mobile work platform is provided with roller.
Further, guiding mechanism is fixing bearing.
Further, controller also includes display, and measurement result is shown by controller by display, display
For touch screen.
The measuring method implemented using the rigid test system of above-described automation, is comprised the following steps：
1) pass through controller and one setting value is set to force value；
2) select on stationary fixture from measuring point, operate force application apparatus a little to exert a force to testing oneself, (this of repeatedly being tested oneself
Repeatedly generally three to five times of place), the power being applied when testing oneself every time all exceedes setting value；
3) controller passes through displacement transducer, and collection is when the value that force snesor detects reaches setting value from the position of measuring point
Shifting value, the mean value of shift value of repeatedly testing oneself sought automatically by controller, and the rigidity obtaining the rigid test system of described automation becomes
Shape amount, that is, compensate deflection, be first group of data；
4) workpiece for measurement is fixed on stationary fixture, workpiece for measurement selectes measurement point, adjust force application apparatus and consolidate
The relative position of clamp tool；
5) (herein repeatedly generally three to five times) are taken multiple measurements on measurement point, is applied when measuring every time
Power all exceedes setting value；
6) controller passes through displacement transducer, the position of collection measurement point when the value that force snesor detects reaches setting value
Shifting value, the multiple mean value measuring shift value sought automatically by controller, obtains measurement point deflection, is second group of data；
7) measurement point deflection is made the difference the practical distortion amount trying to achieve measurement point, i.e. conclusion with compensating deflection by controller
Value.
Further, if first group of data and second group of data all itself measure in equipment, conclusion value is then regarded as
System error.
In one embodiment of the present of invention, the operation principle of the present invention：
Since PLC was come out from 1969, health care, food processing, manufacture are had been widely used for
The various fields such as industry, building industry, public transport, show business, with industrial robot, CAD and auxiliary manufacture one
Act the three big pillars forming industrial automation.Traffic lights, elevator, bank ATM, automatically-controlled door, manipulator, music fountain,
Stage Equipment Control, automatic vending machine etc. are all that the PLC being frequently seen at one's side controls case.PLC technology is automatic
Change the critical elements of industry, automation equipment obtains universal use.
For the shortcoming of prior art, force value and displacement Value Data monitor in real time set after applying force value, arrive in 0N
Reach and apply real time record displacement transducer numerical value when force value reaches, two groups of data make the difference and obtain shift value；More importantly originally
Measuring system can compensate for equipment deformation itself, can measure multi-group data and automatically calculate mean value, measurement result is more accurate.
Equipment structure chart is introduced：Equipment can up and down, three direction motor adjustment measurement modules and measurement point around
Relative position, because trapezoidal screw has auto-lock function, handwheel need not be locked after being adjusted in place.
Testing touch screen picture is as shown below, looks for some measurement three times above first equipment near measurement point during measurement,
System is automatically averaged and is obtained the rigid deformation amount of equipment itself, that is, compensate deflection, be first group of data；Then in measurement
Point measurement three times, system is automatically averaging and obtains measurement point deflection, is second group of data；System is by measurement point deflection and benefit
Repay deflection and make the difference the practical distortion amount trying to achieve measurement point, i.e. conclusion value.
If first group of data and second group of data all itself measure in equipment, conclusion value is then regarded as systematic error
Value.
Key point：(1) automatic measurement (2) rigidly measures；
To be protected point：Automation rigid deformation measuring system
Because force value and shift value are the variable needing to measure, traditional measurement method is a variate-value (force value)
Remove to measure another variate-value (shift value) again when reaching setting value, the continuous mode of first variable (force value) is not easy to
Collection is it is easy to bigger than setting value, so measurement data has larger error.
Programmable Logic Controller：It is a kind of electronic system of the electronics of digital operation, specially apply in industrial settings
And design.It using the memory that can program, for execution storage logical operation and sequential control, regularly, count
With the instruction of the operations such as arithmetical operation, and by numeral or simulation input (I) and output (O) interface, control various types of
Plant equipment or production process.
Touch-screen：It is also called " touch screen ", " contact panel ", be a kind of induction type liquid receiving the input signals such as contact
Crystal device, when contacting the graphic button on screen, the haptic feedback system on screen can be according to the journey of preprogramming
Formula drives various hookup mechanisms, is substituted for mechanical push button panel, and produces by liquid crystal display picture lively
Visual and sound effects.
The present invention by the accurate control to first variable (force value), the numerical value of second variable of instantaneous acquiring, that is,
First variable is made to be applied more than setting numerical value, the data acquisition of second variable has completed, and does not affect measurement result.
Above be only presently preferred embodiments of the present invention, certainly the interest field of the present invention can not be limited with this,
The equivalence changes therefore made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (10)
1. a kind of automation rigidity test system is it is characterised in that include mobile work platform, force application apparatus, stationary fixture and control
Device processed, force application apparatus and stationary fixture may be contained within mobile work platform, and stationary fixture is arranged at force application apparatus side, force dress
Put and be provided with force snesor and displacement transducer, force snesor and displacement transducer are connected with controller respectively, to be measured during test
Workpiece is fixed on stationary fixture, and force application apparatus apply pressure to workpiece for measurement.
2. automation rigidity test system according to claim 1 is it is characterised in that described mobile work platform includes machine
Frame, horizontal moving gear, horizontal longitudinal-moving device and vertical shift device, horizontal moving gear and horizontal longitudinal-moving device may be contained within
In frame, vertical shift device is arranged on horizontal moving gear, and force application apparatus are arranged at vertical shift device, and stationary fixture sets
It is placed on horizontal longitudinal-moving device.
3. automation rigidity test system according to claim 2 is it is characterised in that horizontal moving gear includes the first water
Level gauge, first level slide unit and first level screw mandrel, first level guide rail is horizontally set in frame, and first level slide unit sets
It is placed on first level guide rail, first level screw mandrel is connected with first level slide unit, rotation first level screw mandrel drives the first water
Somoothing board moves along first level guide rail transverse horizontal, and vertical shift device is arranged on first level slide unit.
4. automation rigidity test system according to claim 3 is it is characterised in that the number of first level guide rail is 2
Individual, horizontally-parallel side by side it is arranged in frame.
5. automation rigidity test system according to claim 2 is it is characterised in that vertical shift device includes vertically leading
Rail, vertical slide unit and vertical screw mandrel, the lower end of upright guide rail is connected with horizontal moving gear, and vertical slide unit is arranged at upright guide rail
On, vertical screw mandrel is connected with vertical slide unit, and rotation vertical thread bar drives vertical slide unit along upright guide rail vertical shift.
6. the rigid test system of automation according to claim 1 it is characterised in that force application apparatus include trapezoidal screw,
Fixed block and pressure block, fixed block is arranged on vertical shift device, and trapezoidal screw is connected with fixed block by screw thread, trapezoidal spiral shell
Bar passes through fixed block, and pressure block is arranged at one end of trapezoidal screw, and pressure block is provided with spherical indenter, the other end of trapezoidal screw
It is provided with rotary handle, fixed block is additionally provided with guiding mechanism, in guiding mechanism, be provided with guide rod, one end of guide rod is with fixed block even
Connect, displacement transducer is arranged on fixed block, one end of displacement transducer is connected with fixed block, force snesor is arranged at spherical pressure
Between head and pressure block.
7. automation rigidity test system according to claim 2 is it is characterised in that horizontal longitudinal-moving device includes the second water
Level gauge, the second horizontal sliding table and the second horizontal lead screw, the second horizontal guide rail is longitudinally disposed in frame, and the second horizontal sliding table sets
It is placed on the second horizontal guide rail, the second horizontal lead screw is connected with the second horizontal sliding table, rotation second horizontal lead screw drives the second water
Somoothing board moves along the second horizontal guide rail vertical equity, and stationary fixture is arranged on the second horizontal sliding table.
8. automation rigidity test system according to claim 7 is it is characterised in that the number of the second horizontal guide rail is 2
Individual, it is longitudinally disposed at side by side in frame.
9. automation rigidity test system according to claim 1 is it is characterised in that described control system includes PLC.
10. adopt the measuring method that the rigid test system of automation described in claim 1 implemented it is characterised in that include with
Lower step：
1) pass through controller and one setting value is set to force value；
2) select on stationary fixture from measuring point, operate force application apparatus a little to exert a force to testing oneself, repeatedly tested oneself, every time certainly
The power being applied during survey all exceedes setting value；
3) controller passes through displacement transducer, and collection is when the value that force snesor detects reaches setting value from the displacement of measuring point
Value, the mean value of shift value of repeatedly testing oneself sought automatically by controller, obtains the rigid deformation of the rigid test system of described automation
Amount, that is, compensate deflection, be first group of data；
4) workpiece for measurement is fixed on stationary fixture, measurement point, adjustment force application apparatus and geometrical clamp are selected on workpiece for measurement
The relative position of tool；
5) take multiple measurements in measurement point, the power being applied when measuring every time all exceedes setting value；
6) controller passes through displacement transducer, the displacement of collection measurement point when the value that force snesor detects reaches setting value
Value, the multiple mean value measuring shift value sought automatically by controller, obtains measurement point deflection, is second group of data；
7) measurement point deflection is made the difference the practical distortion amount trying to achieve measurement point, i.e. conclusion value with compensating deflection by controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039449.4A CN106405130B (en) | 2016-11-21 | 2016-11-21 | A kind of rigid test macro of automation and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039449.4A CN106405130B (en) | 2016-11-21 | 2016-11-21 | A kind of rigid test macro of automation and test method |
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| Publication Number | Publication Date |
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| CN106405130A true CN106405130A (en) | 2017-02-15 |
| CN106405130B CN106405130B (en) | 2019-07-12 |
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ID=58082766
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611039449.4A Active CN106405130B (en) | 2016-11-21 | 2016-11-21 | A kind of rigid test macro of automation and test method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107041120A (en) * | 2017-05-12 | 2017-08-11 | 广州中国科学院先进技术研究所 | A kind of slow-wave component shell cold extrusion device |
| CN109060378A (en) * | 2018-09-14 | 2018-12-21 | 通标标准技术服务(上海)有限公司 | A kind of automatization test system rigidly tested for auto parts and components and its test method |
| CN110031352A (en) * | 2019-05-15 | 2019-07-19 | 河南省计量科学研究院 | Rockwell apparatus Standard Machine and hardness calibration method |
| CN115356102A (en) * | 2022-08-11 | 2022-11-18 | 东风电驱动系统有限公司 | Method and device for rapidly detecting meshing performance of starter |
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| CN101101248A (en) * | 2007-07-20 | 2008-01-09 | 上海应用技术学院 | Adjustable clamping device of minisize torsional rod rigidity test |
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| CN102095637A (en) * | 2010-11-12 | 2011-06-15 | 中国建筑材料检验认证中心有限公司 | Method for assessing elastic modulus and strength of circular or circular-tube brittle material |
| CN103278378A (en) * | 2013-06-21 | 2013-09-04 | 中国皮革和制鞋工业研究院 | Detection instrument for automatically detecting longitudinal rigidity |
| CN105699075A (en) * | 2016-04-11 | 2016-06-22 | 四川志方科技有限公司 | Moment rigidity testing device for RV reducer |
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| CN101101248A (en) * | 2007-07-20 | 2008-01-09 | 上海应用技术学院 | Adjustable clamping device of minisize torsional rod rigidity test |
| JP2009128196A (en) * | 2007-11-23 | 2009-06-11 | Fuso Koki Kk | Device for measuring working reference position of workpiece, and working-measuring system |
| CN102095637A (en) * | 2010-11-12 | 2011-06-15 | 中国建筑材料检验认证中心有限公司 | Method for assessing elastic modulus and strength of circular or circular-tube brittle material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107041120A (en) * | 2017-05-12 | 2017-08-11 | 广州中国科学院先进技术研究所 | A kind of slow-wave component shell cold extrusion device |
| CN109060378A (en) * | 2018-09-14 | 2018-12-21 | 通标标准技术服务(上海)有限公司 | A kind of automatization test system rigidly tested for auto parts and components and its test method |
| CN110031352A (en) * | 2019-05-15 | 2019-07-19 | 河南省计量科学研究院 | Rockwell apparatus Standard Machine and hardness calibration method |
| CN115356102A (en) * | 2022-08-11 | 2022-11-18 | 东风电驱动系统有限公司 | Method and device for rapidly detecting meshing performance of starter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106405130B (en) | 2019-07-12 |
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