CN109443909A - A kind of experiment shear test block weld clip - Google Patents
A kind of experiment shear test block weld clip Download PDFInfo
- Publication number
- CN109443909A CN109443909A CN201811232880.XA CN201811232880A CN109443909A CN 109443909 A CN109443909 A CN 109443909A CN 201811232880 A CN201811232880 A CN 201811232880A CN 109443909 A CN109443909 A CN 109443909A
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- CN
- China
- Prior art keywords
- test specimen
- test
- fixture block
- welded
- specimen
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
Abstract
The invention discloses a kind of experiment shear test block weld clips, including jig platform, the fixture block for clamping test specimen is fixedly connected with by clamping screw on the jig platform, fixture block size is targetedly designed according to Specimen Shape, the fixture block of each shape corresponds to a kind of test specimen, and the slot of several test specimens to be welded is respectively provided on each fixture block；The test specimen two ends to be welded are equipped with boss, so that test specimen two ends clip position to be welded is parallel to each other, to eliminate the moment of flexure being subject at solder joint.Present invention eliminates test specimen fixed mechanisms common on plain clamp, while eliminating the unusual fluctuation mechanism for changing test specimen position, greatly simplify clamp structure, the precision of fixture is greatly improved.According to measurement, when test specimen welds, two test specimen accuracy of alignments can achieve 0.05mm, and specimen thickness control precision can reach 0.01mm, fully meet the requirement tested to test specimen.
Description
Technical field
The present invention relates to fixture design fields, and in particular to a kind of experiment shear test block weld clip.
Background technique
With the development of electronic industry, electronic product performance increasingly improves, and proposes higher want to Electronic Encapsulating Technology
It asks.In electron package structure, solder joint has obtained always more concern as weaker link.Related test method
Just come into being.Existing solder joint test test specimen is divided into two major classes, tests the direct stress and shearing stress of solder joint respectively.But it is existing
Test solder joint cutting performance test specimen have the defects that it is certain.As shown in Figure 1, black portions are solder joints to be tested, pass through
Stretching-machine applies pulling force butt welding point and carries out shearing force testing.But test specimen two ends retaining part is not on the same line, is drawing
During stretching, may butt welding point generate certain moment of flexure, to influence experimental result.Simultaneously as test specimen is by metal before
It cuts, surface is poor to certain solder affinities, and test specimen is caused to be broken from weld interface, loses so as to cause experiment
It loses.
Existing welding fixture is widely used, and has certain requirements that weld occasion very common to precision various.Such as it welds
Connect the welding fixture of steel-tube construction, auto welding jig etc..It is all in a stable platform according to quilt that basic structure is most of
Several support arms are built in the requirement of welding object, and welded parts is fixed on support arm, by adjust support arm position and
Angle changes the geometry site between component, and fixed support arm, then carries out after the completion of part position relations are adjusted
Welding operation.Part welding fixture has used the advanced methods such as laser measurement to improve welding precision.But for shape spy
Very, size is smaller, and the testpieces of welding procedure complexity, existing grip size is excessive, can not be put into welding process equipment, fits
It is poor with property, cause the test specimen of welding that cannot consolidate accurate clamping and fix, and is at high price.
Summary of the invention
To solve the above problems, the present invention provides a kind of experiment shear test block weld clip, with improve welding precision and
Fixture adaptability reduces grip size in order to be put among welding equipment, to reach reduction experimental cost, improves testpieces essence
The purpose of degree.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of test uses shear test block weld clip, including jig platform, is connected firmly on the jig platform by clamping screw
There is the fixture block for clamping test specimen, fixture block size is targetedly designed according to Specimen Shape, the fixture block pair of each shape
A kind of test specimen is answered, and is respectively provided with the slot of several test specimens to be welded on each fixture block；The test specimen two ends to be welded are equipped with convex
Platform, so that test specimen two ends clip position to be welded is parallel to each other, to eliminate the moment of flexure being subject at solder joint.
Further, other metal coatings are electroplated in the surface of test piece to be welded, increase the intensity of welding point interface
Further, according to different test specimen requirements on the jig platform, in different location aperture.
Further, the jig platform is made using 7075 aluminium alloys through Cutting Process.
Further, the fixture block and slot are process using low-speed WEDM technique, and machining accuracy can reach
0.01 millimeter.
Further, including a pressurization fixture block, setting are used to pressurize to test specimen above fixture block, to cope with test specimen welding
When weld interface need the occasion pressurizeed.
The invention has the following advantages:
1) it is directed to required precision, design is optimized to the structure of fixture, has used the processing sides such as low-speed WEDM
Formula effectively increases the cooperation precision of test specimen and fixture, simultaneously as the specificity of fixture, present invention eliminates it is some need not
The design wanted eliminates test specimen fixed mechanism common on plain clamp, while eliminating the unusual fluctuation mechanism for changing test specimen position,
Greatly simplify clamp structure.Since structure simplifies, moving parts greatly reduces (entire fixture is substantially without moving parts), presss from both sides
The precision of tool is greatly improved.According to measurement, when test specimen welds, two test specimen accuracy of alignments can achieve 0.05mm, test specimen
Thickness control accuracy can reach 0.01mm, fully meet the requirement tested to test specimen.Simultaneously because structure is simple, grip size is tight
It gathers, can easily be put among welding equipment, it might even be possible to while multiple sets of fixtures are put into, while being welded, it mentions significantly
High welding efficiency.Meanwhile the fixture cost of manufacture that the present invention designs also has very big decline compared with conventional brace, it is very high in precision
In the case where, every set processing cost is only hundreds of members.
2) by increasing boss in test specimen two ends, so that test specimen two ends clip position is parallel to each other, to eliminate solder joint
The moment of flexure that place is subject to.By the way that other metal coatings are electroplated in surface of test piece, the intensity of welding point interface is increased.
Detailed description of the invention
Fig. 1 is schematic diagram when two test specimens to be welded weld in the prior art.
Fig. 2 is the structural schematic diagram of test specimen to be welded in a specific embodiment of the invention.
Fig. 3 is the structural schematic diagram of fixture in a specific embodiment of the invention.
Fig. 4 is the top view of Fig. 3.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Embodiment
Test specimen to be welded 5 in the present embodiment is as shown in Fig. 2, for test resisting under different bonding areas welding filler metal
Other metal materials (gold, silver) are electroplated to enhance boundary strength in cutting performance, surface of test piece, and the length of one of test specimen is
27.5mm, with a thickness of 2.73mm, both ends are equipped with boss 6, land length 10.00mm, with a thickness of 2.77mm, width 5mm；
The length of another test specimen is 26.00mm, and with a thickness of 2.73mm, both ends are equipped with boss 6, land length 10.00mm, thickness
For 2.77mm.
A kind of experiment shear test block weld clip of the embodiment of the present invention, as shown in Figure 3 and Figure 4, including jig platform 1,
It is made using 7075 aluminium alloys through Cutting Process, long 89mm, wide 68mm；It is solid by clamping screw 2 on the jig platform 1
It is associated with the fixture block 3 for clamping test specimen, fixture block 3 is in rectangular parallelepiped structure, and the slot of several test specimens to be welded is uniformly arranged on 3
4, the width of slot 4 is 2mm；Fixture block and jig platform are made using same material；The fixture block and slot use are careful silk thread
Cutting technique is process, and machining accuracy can reach 0.01 millimeter.
When test, in slot that the boss end of two test specimens is inserted into respectively, so that two test specimens overlap joints, are placed in lap-joint
Whole device is then put in installation for welding by welding filler metal, and welding can be completed in control temperature curve.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (6)
1. a kind of experiment shear test block weld clip, including jig platform, which is characterized in that pass through locking on the jig platform
Bolt is fixedly connected with the fixture block for clamping test specimen, and fixture block size is targetedly designed according to Specimen Shape, each shape
Fixture block correspond to a kind of test specimen, and the slot of several test specimens to be welded is respectively provided on each fixture block；The test specimen to be welded two
End is equipped with boss, so that test specimen two ends clip position to be welded is parallel to each other, to eliminate the moment of flexure being subject at solder joint.
2. a kind of experiment shear test block weld clip as described in claim 1, it is characterised in that: the surface of test piece to be welded
Other metal coatings are electroplated, increase the intensity of welding point interface.
3. a kind of experiment shear test block weld clip as described in claim 1, it is characterised in that: basis on the jig platform
Different test specimen requirement, in different location aperture.
4. a kind of experiment shear test block weld clip as described in claim 1, it is characterised in that: the jig platform uses
7075 aluminium alloys are made through Cutting Process.
5. a kind of experiment shear test block weld clip as described in claim 1, it is characterised in that: the fixture block and slot use
Low-speed WEDM technique is process, and machining accuracy can reach 0.01 millimeter.
6. a kind of experiment shear test block weld clip as described in claim 1, it is characterised in that: it further include a pressurization fixture block,
It is arranged above fixture block, for pressurizeing to test specimen, to cope with the occasion that weld interface needs to pressurize when test specimen welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811232880.XA CN109443909A (en) | 2018-10-15 | 2018-10-15 | A kind of experiment shear test block weld clip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811232880.XA CN109443909A (en) | 2018-10-15 | 2018-10-15 | A kind of experiment shear test block weld clip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443909A true CN109443909A (en) | 2019-03-08 |
Family
ID=65548151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811232880.XA Pending CN109443909A (en) | 2018-10-15 | 2018-10-15 | A kind of experiment shear test block weld clip |
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| CN (1) | CN109443909A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954910A (en) * | 2011-08-26 | 2013-03-06 | 航天科工防御技术研究试验中心 | Heat-resistant coating tensile shear strength test model and production method thereof |
| CN204397174U (en) * | 2014-09-26 | 2015-06-17 | 武汉钢铁(集团)公司 | The laser lap welding clamp of galvanized steel plain sheet |
| CN204954217U (en) * | 2015-08-07 | 2016-01-13 | 长兴天宏锂电科技有限公司 | Welding jig of battery equipment usefulness |
| CN105606464A (en) * | 2016-02-25 | 2016-05-25 | 哈尔滨飞机工业集团有限责任公司 | Test sheet making method for adhesive overlap joint shear test |
| CN207007595U (en) * | 2017-08-09 | 2018-02-13 | 广州市白云化工实业有限公司 | A kind of specimen preparation fixture of lap shear test |
-
2018
- 2018-10-15 CN CN201811232880.XA patent/CN109443909A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954910A (en) * | 2011-08-26 | 2013-03-06 | 航天科工防御技术研究试验中心 | Heat-resistant coating tensile shear strength test model and production method thereof |
| CN204397174U (en) * | 2014-09-26 | 2015-06-17 | 武汉钢铁(集团)公司 | The laser lap welding clamp of galvanized steel plain sheet |
| CN204954217U (en) * | 2015-08-07 | 2016-01-13 | 长兴天宏锂电科技有限公司 | Welding jig of battery equipment usefulness |
| CN105606464A (en) * | 2016-02-25 | 2016-05-25 | 哈尔滨飞机工业集团有限责任公司 | Test sheet making method for adhesive overlap joint shear test |
| CN207007595U (en) * | 2017-08-09 | 2018-02-13 | 广州市白云化工实业有限公司 | A kind of specimen preparation fixture of lap shear test |
Non-Patent Citations (1)
| Title |
|---|
| 李欣: "纳米银焊膏搭接接头力学性能研究", 《中国博士学位论文全文数据库 工程科技I辑（月刊）》 * |
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