CN107367430B - Plug bends fixing tool and bend test method - Google Patents
Plug bends fixing tool and bend test method Download PDFInfo
- Publication number
- CN107367430B CN107367430B CN201710537258.9A CN201710537258A CN107367430B CN 107367430 B CN107367430 B CN 107367430B CN 201710537258 A CN201710537258 A CN 201710537258A CN 107367430 B CN107367430 B CN 107367430B
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- China
- Prior art keywords
- plug
- tested
- fixing tool
- flexible glue
- fixed block
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- 238000010998 test method Methods 0.000 title claims abstract description 16
- 238000005452 bending Methods 0.000 claims abstract description 59
- 239000003292 glue Substances 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 229920001875 Ebonite Polymers 0.000 claims description 12
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000010835 comparative analysis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0435—Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
Abstract
The present invention provides a kind of plug bending fixing tool and bend test method, and tooling therein includes tooling board, the fixed block being arranged on tooling board, the positioning column and leading part being correspondingly arranged with fixed block；In fixed block, the data line of plug to be tested extends to leading part for plug limit to be tested；Projecting slot, vertical jack and lateral jack are provided on fixed block；When plug to be tested is hung in projecting slot, the bending angle in the flexible glue portion of plug to be tested is 0 degree；When plug to be tested is inserted into vertical jack, the bending angle in flexible glue portion is 180 degree；When plug to be tested is inserted into lateral jack, the bending angle in flexible glue portion is 90 degree；When plug to be tested is inserted into lateral jack, and the data line of plug to be tested bypasses positioning column, the bending angle in flexible glue portion is 45 degree.Multi-angle bending positioning and test can be carried out to multiple products simultaneously using foregoing invention, good product consistency, testing efficiency are high.
Description
Technical field
The present invention relates to product test technical fields, more specifically, are related to a kind of plug bending fixing tool and bending
Test method.
Background technique
After product machine-shaping or before factory, needs to carry out dependence test to the performance of product, have ensured that product
Reliable in quality, performance are stablized.Currently, carrying out bend test to the plug constructions such as Type-C plug or Lighting plug
When, it needs to carry out it bending of multiple angles and the plug after bending is fixed to take pictures, to analyze its internal core
The state that fractures.
Existing plug bend test is usually that plug is fixed as special angle using plasticine to assist shooting,
It is bad to will lead to homogeneity of product in this way, and shooting will can be only achieved desired effect by repeatedly adjustment every time；
In addition, can only shoot every time to the product of a bending angle, testing efficiency is low, heavy workload, and test effect is by people
For being affected for factor.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of plugs to bend fixing tool and bend test method, with
Solving current plug, to bend fixed consistency poor, product test efficiency and the problems such as precision is low, heavy workload.
Plug provided by the invention bends fixing tool, including tooling board, the fixed block being arranged on tooling board, with
The positioning column and leading part that fixed block is correspondingly arranged；In fixed block, the data line of plug to be tested prolongs for plug limit to be tested
Extend to leading part；Wherein, projecting slot, vertical jack and lateral jack are provided on fixed block；When plug to be tested is hung over down
When in hanging groove, the bending angle in the flexible glue portion of plug to be tested is 0 degree；It is to be measured when plug to be tested is inserted into vertical jack
The bending angle for trying the flexible glue portion of plug is 180 degree；When plug to be tested is inserted into lateral jack, the flexible glue of plug to be tested
The bending angle in portion is 90 degree；In the lateral jack of plug to be tested insertion, and the data line of plug to be tested bypasses positioning column
When, the bending angle in the flexible glue portion of plug to be tested is 45 degree.
Furthermore it is preferred that scheme be that plug to be tested further includes contact pin, the ebonite portion being wrapped on the outside of contact pin, Yi Jiyu
The data line of ebonite portion connection；The junction of ebonite portion and data line is arranged in flexible glue portion.
Furthermore it is preferred that scheme be that the upper surface of fixed block is arranged in projecting slot, hang upside down slot be step-like notch,
Contact pin and the limit of ebonite portion are in projecting slot.
Furthermore it is preferred that scheme be that idler wheel is provided on leading part, data line extends at idler wheel.
Furthermore it is preferred that scheme be to be hung in data line far from one end of plug to be tested and apply pouring weight, apply pouring weight for pair
Data line is stretched.
Furthermore it is preferred that scheme be that symmetrical clump weight is provided on tooling board, tooling board support fix
On clump weight.
Furthermore it is preferred that scheme be that tooling board, fixed block and positioning column are nonmetal parts.
Furthermore it is preferred that scheme be that at least four pieces of fixed blocks are provided on tooling board, fixed block by limited post or
Person's limited screw is fixed on tooling board.
According to another aspect of the present invention, a kind of plug bend test method is provided, bends regular worker using above-mentioned plug
Dress treats test plug and carries out bending fixation, this method comprises: it is curved that plug to be tested by predetermined angle limit is fixed on plug
It rolls in fixing tool；The plug for being fixed with plug to be tested bending fixing tool is placed in and is taken pictures in tooling, tooling of taking pictures is passed through
Obtain the wire rod state in the flexible glue portion of plug to be tested.
Furthermore it is preferred that scheme be tooling of taking pictures be that X-ray is taken pictures tooling.
Fixing tool and bend test method are bent using above-mentioned plug, it is polygonal to treat test plug progress using fixed block
Degree limit is fixed, and can carry out test of taking pictures to multiple products simultaneously, and the consistency of product is good, testing efficiency is high, is convenient for product
The comparative analysis of the bad item of same position, is advantageously implemented the automation development of plug bend test.
To the accomplishment of the foregoing and related purposes, one or more aspects of the present invention includes the spy being particularly described below
Sign.Certain illustrative aspects of the invention is described in detail in the following description and the annexed drawings.However, these aspect instructions are only
It is that some of the various ways in the principles of the present invention can be used.In addition, the present invention is intended to include all such aspects with
And their equivalent.
Detailed description of the invention
By reference to the explanation below in conjunction with attached drawing, and with a more complete understanding of the present invention, of the invention is other
Purpose and result will be more clearly understood and understood.In the accompanying drawings:
Fig. 1 is to bend fixing tool structural schematic diagram according to the plug of the embodiment of the present invention；
Fig. 2 is the plug bend test method flow diagram according to the embodiment of the present invention.
Appended drawing reference therein includes: tooling board 1, clump weight 2, fixed block 3, leading part 4, screw 5, idler wheel 6, positioning
Column 7, limited post 8, projecting slot 9, vertical jack 10, lateral jack 11, flexible glue portion 12, data line 13.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific embodiment
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
In other examples, one or more embodiments for ease of description, well known structure and equipment are shown in block form an.
In the description of the present invention, it is to be understood that, term " transverse direction ", " vertical ", "upper", "lower", "left", "right" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
Fixing tool and bend test method are bent for detailed description of the present invention plug, below with reference to attached drawing to this hair
Bright specific embodiment is described in detail.
Fig. 1 shows the structure of plug bending fixing tool according to an embodiment of the present invention.
As shown in Figure 1, the plug of the embodiment of the present invention bends fixing tool, including tooling board 1, setting in tooling board
The positioning column 7 and leading part 4 that fixed block 3 and fixed block 3 on 1 are correspondingly arranged；Plug to be tested limits in fixed block 3, to
The data line 13 of test plug extends to leading part 4；Wherein, projecting slot 9, vertical jack 10 and cross are provided on fixed block 3
To jack 11；When plug to be tested is hung in projecting slot 9, the bending angle in the flexible glue portion 12 of plug to be tested is 0 degree, i.e., to
There is no bending, the two is located on the same line for test plug and data line 13；When plug to be tested is inserted into vertical jack 10
When interior, the bending angle in the flexible glue portion 12 of plug to be tested is 180 degree；When plug to be tested is inserted into lateral jack 11, to
The bending angle in the flexible glue portion 12 of test plug is 90 degree；In the lateral jack 11 of plug to be tested insertion, and plug to be tested
Data line 13 when bypassing positioning column 7, the bending angle in the flexible glue portion 12 of plug to be tested is 45 degree.
Wherein, plug to be tested includes contact pin, the ebonite portion being wrapped on the outside of contact pin, and the number being connected with ebonite portion
According to line 13；The junction in ebonite portion Yu data line 13 is arranged in flexible glue portion 12, and the bending of different angle, energy are carried out to flexible glue portion 12
Enough bending states that 12 internal core wire of flexible glue portion or wire rod are obtained by shooting, observe its situation that fractures, so as to product soft
The bad item in glue portion 12 is compared analysis.
Specifically, fixed block 3 is rectangular parallelepiped structure, and the upper surface of fixed block 3 is provided with falling for step-like notch
Hanging groove 9, the contact pin of plug to be tested and ebonite portion are stuck in corresponding projecting slot 9, are between plug and data line 13 to be tested
Bending angle is not present in nature.In addition, being additionally provided with the vertical jack 10 for being mutually perpendicular to distribution in the inside of fixed block 3
With lateral jack 11, when plug to be tested is inserted into different jacks (including vertical jack 10 and lateral jack 11), and data
When line 13 extends to leading part 4, the bending angle in the flexible glue portion 12 of plug to be tested is different.
Wherein, the jack end of vertical jack 10 is arranged in side of the fixed block 3 far from leading part 4, vertical jack 10 it is interior
Portion's structure is adapted with the structure of plug to be tested, and correspondence can be specifically carried out according to the structure and size of plug to be tested and is set
It sets, after plug to be tested is inserted into vertical jack 10, the data line 13 connecting with plug to be tested extends from the top of fixed block 3
To leading part 4, contact pin and the data line 13 of plug to be tested are parallel to each other, and the bending angle in flexible glue portion 12 is 180 degree at this time.
Similarly, the right side (or left side) of fixed block 3 is arranged in the jack end of lateral jack 11, when plug to be tested is inserted into
Lateral jack 11 and the data line 13 connecting with plug to be tested extend to leading part 4 from the right side (or left side) of fixed block 3
When, it is mutually perpendicular between the contact pin and data line 13 of plug to be tested, the bending angle in flexible glue portion 12 is 90 degree at this time.
For 45 degree of bendings for realizing flexible glue portion 12, on the basis of existing lateral jack 11, it is fixed to be arranged on tooling board 1
Position column 7, positioning column 7 are located at the lower right corner (or lower left corner) side of fixed block 3, after plug to be tested is inserted into lateral jack 11,
Make the data line connecting with plug to be tested 13 around re-extending after positioning column 7 to leading part 4, enables to the curved of flexible glue portion 12
Dog-ear degree is in 45 degree of distributions.
It should be noted that change can be passed through when needing to treat the bend test of test plug progress other angles
The setting position of positioning column 7, so that data line 13 is around after positioning column 7, the bending of different angle can be presented in flexible glue portion 12；
In addition it is also possible to set the jack being arranged in fixed block 3 to except laterally and vertical multiple angles, by plug to be tested
After being inserted into jack, enable to flexible glue portion 12 that bending corresponding with angle of plug jack etc. is presented.
In the specific embodiment of the present invention, idler wheel 6 is provided on leading part 4, data line 13 extends to rolling
It takes turns at 6, in 13 drawing process of data line, the direct friction between data line 13 and tooling board is prevented by idler wheel 6；Work as number
The own wt of the component (for example, earphone or line traffic control etc.) of one end according to line 13 far from plug to be tested makes data line enough
13 when being presented tensional state, can not have to apply additional pulling force, and when the one end of data line 13 far from test plug is lighter,
When own wt is in tensional state insufficient for data line 13, it can be arranged at the end and apply pouring weight etc., by applying pouring weight logarithm
It is stretched according to line 13, the bending angle to ensure flexible glue portion 12 is accurate, prevents its loosening.
In addition, symmetrical match can also be arranged on tooling board 1 for the overall stability for ensuring tooling board 1
Pouring weight 2, tooling board 1 are supported and fixed on clump weight 2, and then are that tooling board 1 provides support and with recast by clump weight 2
With.Wherein, clump weight 2 can be fixed on the left and right sides of tooling board 1 by connection components such as screw 5 or bolts.
In another embodiment of the present invention, tooling board 1, fixed block 3 and positioning column 7 are disposed as non-
Metalwork, the i.e. material of tooling board 1, fixed block 3 and positioning column 7 are nonmetallic.To be fixed in fixed block 3 to
When test plug carries out cripping test, need to shoot the state of the core wire in flexible glue portion 12 by special tooling of taking pictures,
To prevent metalwork in shooting process from impacting to core wire, it has not been convenient to tester distinguishes core wire position, therefore by tooling board
1, fixed block 3 and positioning column 7 are set as nonmetal structure, to clearly obtain flexible glue during the bend test in later period
The connection of core wire in portion 12.
It should be noted that the size of tooling board 1 can be configured according to the size for tooling of taking pictures, and fixed block 3
Number be then correspondingly arranged according to the size of tooling board 1.In contact pin bending fixing tool of the invention, in tooling board 1
On be provided at least four pieces of fixed blocks 3, fixed block 3 and be fixed on tooling board 1 by limited post 8 or limited screw, can
Plugs different to four plugs or four kinds of bending angles simultaneously carry out bending fixation.
It is corresponding with above-mentioned contact pin bending fixing tool, the present invention also provides a kind of plug bend test method, in utilization
It states contact pin bending fixing tool and treats test plug progress pre-bend, bend test is then carried out in corresponding test fixture.
Specifically, Fig. 2 shows the processes of plug bend test method according to an embodiment of the present invention.
As shown in Fig. 2, the plug bend test method of the embodiment of the present invention, comprising the following steps:
S210: plug to be tested is fixed in plug bending fixing tool by predetermined angle limit；
S220: the plug for being fixed with plug to be tested bending fixing tool is placed in and is taken pictures in tooling, tooling of taking pictures is passed through
Obtain the wire rod state in the flexible glue portion of plug to be tested.
In step S210, the bending angle in the flexible glue portion of plug to be tested can be inserted into fixed block according to plug to be tested
Interior position is adjusted.When plug to be tested is hung in projecting slot, the bending angle in the flexible glue portion of plug to be tested is 0
Degree, when plug to be tested is inserted into vertical jack, the bending angle in the flexible glue portion of plug to be tested is 180 degree；When to be tested
When plug is inserted into lateral jack, the bending angle in the flexible glue portion of plug to be tested is 90 degree；When plug to be tested is inserted into laterally
In jack, and when the data line of plug to be tested bypasses positioning column, the bending angle in the flexible glue portion of plug to be tested is 45 degree.
It specifically, can be according to working as after the wire rod state in the flexible glue portion for obtaining plug to be tested by tooling of taking pictures
The situation that fractures of preceding wire rod is compared analysis to the performance of product, and correlation analysis can carry out under the auxiliary of test software.
In the specific embodiment of the present invention, tooling of taking pictures using X-ray take pictures tooling or it is similar have wear
Take pictures tooling etc. of the saturating flexible glue portion to obtain its internal core state.
The embodiment of plug bend test method of the present invention is similar with the plug bending embodiment of fixing tool, correlation
Place can refer to the description in tooling embodiment, not repeat one by one herein.
It, will be to by above embodiment it is found that plug provided by the invention bending fixing tool and bend test method
Test plug is inserted into fixed block with different angle, can when the data line connecting with plug to be tested is extended to leading part
Make the flexible glue portion of plug to be tested that the bending of different angle be presented, when being able to solve product bend test, shooting angle is inconsistent
The problem of, and can disposably multiple products be carried out with the bend test of multi-angle, the fixed consistency of product is good, testing efficiency
Height, convenient for the comparative analysis of the bad item of product same position.
Plug bending fixing tool according to the present invention and bend test side are described in an illustrative manner above with reference to attached drawing
Method.It will be understood by those skilled in the art, however, that the plug proposed for aforementioned present invention bends fixing tool and bending is surveyed
Method for testing can also make various improvement on the basis of not departing from the content of present invention.Therefore, protection scope of the present invention should
It is determined by the content of appended claims.
Claims (10)
1. a kind of plug bends fixing tool, which is characterized in that including tooling board, the fixation being arranged on the tooling board
Block, the positioning column and leading part being correspondingly arranged with the fixed block；Plug limit to be tested is described to be measured in the fixed block
The data line of examination plug extends to the leading part；Wherein,
Projecting slot, vertical jack and lateral jack are provided on the fixed block；
When the plug to be tested is hung in the projecting slot, the bending angle in the flexible glue portion of the plug to be tested is 0 degree；
When the plug to be tested is inserted into the vertical jack, the bending angle in the flexible glue portion of the plug to be tested is
180 degree；
When in the plug insertion lateral jack to be tested, the bending angle in the flexible glue portion of the plug to be tested is 90
Degree；
When plug to be tested is inserted into the lateral jack, and the data line of the plug to be tested bypasses the positioning column,
The bending angle in the flexible glue portion of the plug to be tested is 45 degree；
Test plug flexible glue is treated by changing the setting position of positioning column or changing the setting angle realization of fixed block internal plug seat
The setting of other bending angles of portion.
2. plug as described in claim 1 bends fixing tool, which is characterized in that
The plug to be tested further includes contact pin, the ebonite portion being wrapped on the outside of the contact pin, and is connect with the ebonite portion
Data line；
The junction in the ebonite portion and the data line is arranged in the flexible glue portion.
3. plug as claimed in claim 2 bends fixing tool, which is characterized in that
The projecting slot is arranged in the upper surface of the fixed block, and the projecting slot is step-like notch, the contact pin and
The ebonite portion limit is in the projecting slot.
4. plug as described in claim 1 bends fixing tool, which is characterized in that
Idler wheel is provided on the leading part, the data line extends at the idler wheel.
5. plug as described in claim 1 bends fixing tool, which is characterized in that
It is hung in the data line far from one end of the plug to be tested and applies pouring weight, the pouring weight of applying is for the data line
It is stretched.
6. plug as described in claim 1 bends fixing tool, which is characterized in that
Symmetrical clump weight is provided on the tooling board, the tooling board is supported and fixed on the clump weight
On.
7. plug as described in claim 1 bends fixing tool, which is characterized in that
The tooling board, the fixed block and the positioning column are nonmetal parts.
8. plug as described in claim 1 bends fixing tool, which is characterized in that
At least four pieces of fixed blocks, the fixed block is provided on the tooling board to fix by limited post or limited screw
On the tooling board.
9. a kind of plug bend test method is treated using plug as claimed in any one of claims 1 to 8 bending fixing tool
Test plug carries out bending fixation, which comprises
The plug to be tested is fixed in the plug bending fixing tool by predetermined angle limit；
The plug for being fixed with plug to be tested bending fixing tool is placed in and is taken pictures in tooling, institute is obtained by the tooling of taking pictures
State the wire rod state in the flexible glue portion of plug to be tested.
10. plug bend test method as claimed in claim 9, which is characterized in that
The tooling of taking pictures is that X-ray is taken pictures tooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537258.9A CN107367430B (en) | 2017-07-04 | 2017-07-04 | Plug bends fixing tool and bend test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537258.9A CN107367430B (en) | 2017-07-04 | 2017-07-04 | Plug bends fixing tool and bend test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107367430A CN107367430A (en) | 2017-11-21 |
| CN107367430B true CN107367430B (en) | 2019-09-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537258.9A Active CN107367430B (en) | 2017-07-04 | 2017-07-04 | Plug bends fixing tool and bend test method |
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| Country | Link |
|---|---|
| CN (1) | CN107367430B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031204B (en) * | 2019-05-16 | 2024-03-08 | 昆山丘钛微电子科技有限公司 | Anti-fatigue test fixture |
| CN112229615B (en) * | 2020-10-16 | 2022-05-31 | 合肥维晶电器有限公司 | Multifunctional tester for socket durability |
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| CN107367430A (en) | 2017-11-21 |
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