CN1680798A - Impacting tester with double pendulum and testing method thereof - Google Patents
Impacting tester with double pendulum and testing method thereof Download PDFInfo
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- CN1680798A CN1680798A CN 200410021245 CN200410021245A CN1680798A CN 1680798 A CN1680798 A CN 1680798A CN 200410021245 CN200410021245 CN 200410021245 CN 200410021245 A CN200410021245 A CN 200410021245A CN 1680798 A CN1680798 A CN 1680798A
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- pendulum
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- angle
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- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 230000003116 impacting effect Effects 0.000 title 1
- 238000010998 test method Methods 0.000 claims abstract description 8
- 238000009863 impact test Methods 0.000 claims description 22
- 230000005484 gravity Effects 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- CJRQAPHWCGEATR-UHFFFAOYSA-N n-methyl-n-prop-2-ynylbutan-2-amine Chemical compound CCC(C)N(C)CC#C CJRQAPHWCGEATR-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
An impact tester with double pendulum consists of driven pendulum formed by the first link lever and bob, driving pendulum formed by the second link lever and bob as well as sample base. Its test method includes lifting the driving pendulum up to preset angle, fixing it temporarily, fixing test sample in 'Z' shape on base and driven bob through packing device, resetting two pointers on scale, releasing the driving pendulum to shock driven pendulum for breaking test sample, recording frontlash angle of driving pendulum and calculating out consumed impact work.
Description
Technical field
The present invention relates to the impulse test technology, be specially a kind of double pendulum impact testing machine and test method thereof.
Background technology
The typical impact test has two kinds: pendulum impact test and falling weight impact test.Wherein pendulum impact test method is simple, and device therefor comprises several sections such as pendulum, specimen holder, index dial and pointer, and sample is the block sample of notched 10 * 10 * 55mm, is fit to the shock resistance of the material of evaluation thickness 〉=10mm generally speaking.The falling weight impact test system complex costs an arm and a leg, and generally need not in daily detection.
Development along with auto industry and Aeronautics and Astronautics cause, the application of lighting material (aluminium alloy, magnesium alloy, titanium alloy, high-strength steel, engineering plastics, compound substance etc.) thin plate is more and more, the thin plate interconnection technique is also varied, as spot welding, bonding, riveted joint, Laser Welding (LBW), various arc-welding.When the application new material substitutes traditional material in important thin plate unitized construction, one of performance that shock resistance is concerned about often most.In existing impulse test technology, a blank is arranged, lack impact test method and equipment exactly at thin plate and jointing thereof.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can detect thin plate and jointing is anti-shearing, the double pendulum impact testing machine and the test method thereof of tension impact performance.
Technical scheme of the present invention is:
A kind of double pendulum impact testing machine, has framework, impact part, sample base, the impact portion branch comprises slave pendulum and initiatively puts, slave pendulum is with initiatively to put sense of rotation corresponding, by first connecting rod, the pendulum of band hold down gag is formed by connecting, initiatively pendulum is by second connecting rod, pendulum is formed by connecting, the upper surface of sample base is relative with the lower surface of slave pendulum pendulum, gap between the two and sample base one side, the another side of slave pendulum pendulum is formed for placing horizontal " Z " font structure of " Z " font impact specimen, and the side of sample base and slave pendulum pendulum is equipped with hold down gag respectively.
The side angle of the upper surface of sample base of the present invention and its clamping sample can be 0～90 °, and the side angle of the lower surface of slave pendulum pendulum and its clamping sample can be 0～90 °.
The upper surface of sample base of the present invention can have 0～90 ° angle of inclination, and the lower surface of slave pendulum pendulum can have 0～90 ° angle of inclination, and the lower surface vergence direction of the upper surface of sample base and slave pendulum pendulum is identical.
The pendulum that the present invention initiatively puts can be hung the structure of balancing weight for flute profile pendulum symmetria bilateralis.
The structure that hold down gag of the present invention can adopt the bolt front end that compact heap is installed holds out against.
The present invention initiatively puts with slave pendulum can be respectively equipped with the index dial that is used to indicate the two pendulum anglecs of rotation.
The present invention can also comprise the brake system that constitutes by hydraulic system, the brake lining that links to each other with hydraulic system, with the brake flange of two swing shaft one.
The test method of above-mentioned double pendulum impact testing machine, concrete steps are as follows:
1) initiatively pendulum lifts default angle, and temporary transient fixing;
2) by hold down gag " Z " font impact specimen is fixed on the pendulum of pedestal and slave pendulum;
3) two pointers with index dial reset;
4) discharge initiatively pendulum, impact slave pendulum, and then moment is broken sample;
5) angle of clashing into the back preshoot with slave pendulum initiatively put in record;
6), be calculated as follows the ballistic work W that sample consumes according to conservation of energy principle:
W＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)-W
E
Wherein, M
A, M
BBe respectively the quality of initiatively putting, θ with slave pendulum
A, θ
BBe respectively the angle of preshoot after initiatively pendulum clashes into slave pendulum, θ
0For initiatively putting the angle of initially lifting, L
A, L
BThe distance of centre of gravity that is respectively initiatively pendulum and slave pendulum is the distance of rotating shaft core separately, W
EBe the system loss energy, by not putting sample, by abovementioned steps 1), 3), 4), 5) test, be calculated as follows W then
E:
W
E＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)。
After the described step 5), slave pendulum continues preshoot with pendulum initiatively, reach the extreme higher position after beginning to backswing, at this moment start brake system, two pendulum are slowly put down.
Advantage of the present invention and beneficial effect are as follows:
1, testing machine of the present invention is pure mechanical hook-up, does not have complicated control system, and the parts that need high-precision processing seldom utilize it can make things convenient for, finish at an easy rate the detection to thin plate and jointing shock resistance thereof that other testing machine can not be finished.
2, test method of the present invention is simple, and test findings is accurate.
Description of drawings
Fig. 1 is a double pendulum impact testing machine structural representation of the present invention (not comprising brake system).
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the sample base partial schematic diagram.
Fig. 4 is the A-A cut-open view of Fig. 3.
Fig. 5 is the side view of Fig. 3.
Fig. 6 is the slave pendulum partial schematic diagram.
Fig. 7 is the B-B cut-open view of Fig. 6.
Fig. 8 is an impulse test synoptic diagram of the present invention.
Embodiment
Shown in Fig. 1～8, the present invention by framework, sample base 1, slave pendulum 2, initiatively put 3, six most of compositions of index dial 4, brake system.
1, has a pair by the column more than 4 or 45, base plate 6, pedestal 7, initiatively put the framework that lifting angle initialization and releasing mechanism 8 are formed, see accompanying drawing 1;
2, the sample base 1 that has a side band hold down gag 11, this hold down gag 11 play fixedly impact specimen one side; The upper surface of sample base 1 (one side adjacent with the slave pendulum pendulum) has 0～90 ° angle of inclination (present embodiment is 5 °), guarantees after thrusting sample not the phenomenon that friction takes place even choke with pendulum that continues preshoot and sample, sees accompanying drawing 1 and Fig. 2;
3, has a slave pendulum of forming by the pendulum 23 of first connecting rod 21 and side band hold down gag 22, this hold down gag plays fixedly impact specimen another side, pendulum 23 another sides are provided with the scope of attack 24, the lower surface of pendulum 23 (one side adjacent with sample base 1) has 0～90 ° angle of inclination (present embodiment is 5 °), the upper surface vergence direction of the lower surface of slave pendulum pendulum 23 and sample base 1 is identical, be similarly and guarantee in the swing process that thrusts sample and continue subsequently not the phenomenon that friction takes place even choke with sample, see accompanying drawing 1 and Fig. 3;
4, have one and initiatively put 3 by what second connecting rod 31 and flute profile pendulum 32 were formed, the symmetria bilateralis that the weight of pendulum 32 leans against the flute profile pendulum is hung balancing weight 33 and is regulated.The pendulum of bathtub construction and the mode of hanging balancing weight can guarantee that the whole centre of gravity place of initiatively putting weight adjusting front and back is consistent, and overlap with percussive action point;
5, have index dial 4, two cover scales and pointer corresponding respectively initiatively a pendulum and a slave pendulum of forming by two cover scales 41 and pointer 42, can indicate the anglec of rotation of two pendulum;
6, have a cover brake system, by hydraulic system, the brake lining that links to each other with hydraulic system, constitute, drive brake lining and the brake flange friction energy stops two rotations of putting at any time by hydraulic system with the brake flange of two swing shaft one.
This testing machine belongs to metal construction, can pass through machining, welding is connected manufacturing with bolt, combination, the upper surface of sample base 1 is relative with the lower surface of slave pendulum pendulum 23, gap between the two and sample base 1 one sides, the another side of slave pendulum pendulum 23 is formed for placing horizontal " Z " font structure of " Z " font impact specimen, the side angle of the upper surface of sample base 1 and its clamping sample can be 0～90 ° (present embodiment is 60 °), the side angle of the lower surface of slave pendulum pendulum 23 and its clamping sample can be 0～90 °, (present embodiment is 60 °), the structure that hold down gag adopts the bolt front end that compact heap is installed holds out against sample.
The process of the test of this impact testing machine is as follows:
1, by initiatively putting lifting angle initialization and releasing mechanism 8, lift default angle with initiatively putting 3, and temporary transient fixing;
2, by hold down gag " Z " font impact specimen 9 is fixed on the pendulum of pedestal and slave pendulum;
3, two pointers with index dial reset;
4, release initiatively puts 3, impacts slave pendulum 2, and then moment is broken sample;
5, slave pendulum 2 with initiatively put 3 and continue preshoots, reach the extreme higher position after beginning to backswing, at this moment start brake system, put two and slowly put down;
6, record initiatively put 3 with the angle of slave pendulum 2 bump preshoots afterwards.
Then, according to conservation of energy principle, be calculated as follows the ballistic work W that sample consumes:
W＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)W
E
Wherein, M
A, M
BBe respectively the quality of initiatively putting, θ with slave pendulum
A, θ
BBe respectively the angle of preshoot after initiatively pendulum clashes into slave pendulum, θ
0For initiatively putting the angle of initially lifting, L
A, L
BThe distance of centre of gravity that is respectively initiatively pendulum and slave pendulum is the distance of rotating shaft core separately, sees Fig. 4.W
EBe the system loss energy, can test by aforementioned 1,3,4,5,6 steps, press following formula (symbolic significance is the same) then and calculate W by not putting sample
E:
W
E＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)
The ballistic work W that sample consumed is big more, and is anti-shearing, the tension impact performance is good more.
Claims (9)
1, a kind of double pendulum impact testing machine, has framework, impact part, sample base, it is characterized in that: the impact portion branch comprises slave pendulum (2) and initiatively puts (3), slave pendulum (2) is with initiatively pendulum (3) sense of rotation is corresponding, by first connecting rod (21), the pendulum of band hold down gag is formed by connecting, initiatively pendulum (3) is by second connecting rod (31), pendulum (32) is formed by connecting, the upper surface of sample base (1) is relative with the lower surface of slave pendulum pendulum (23), gap between the two and sample base (1) one side, the another side of slave pendulum pendulum (23) is formed for placing horizontal " Z " font structure of " Z " font impact specimen (9), and the side of sample base (1) and slave pendulum pendulum (23) is equipped with hold down gag respectively.
2, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: the upper surface of sample base (1) and the side angle of its clamping sample are 0～90 °, and the lower surface of slave pendulum pendulum (23) and the side angle of its clamping sample are 0～90 °.
3, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: the upper surface of sample base (1) has 0～90 ° angle of inclination, the lower surface of slave pendulum pendulum (23) has 0～90 ° angle of inclination, and the upper surface of sample base (1) is identical with the lower surface vergence direction of slave pendulum pendulum (23).
4, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: initiatively the pendulum (32) of pendulum (3) is hung the structure of balancing weight (33) for flute profile pendulum symmetria bilateralis.
5, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: the structure that hold down gag adopts the bolt front end that compact heap is installed holds out against.
6, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: initiatively pendulum (2) and slave pendulum (3) are respectively equipped with the index dial (4) that is used to indicate the two pendulum anglecs of rotation.
7, according to the described double pendulum impact testing machine of claim 1, it is characterized in that: also comprise the brake system that constitutes by hydraulic system, the brake lining that links to each other with hydraulic system, with the brake flange of two swing shaft one.
8, a kind of test method of double pendulum impact testing machine is characterized in that concrete steps are as follows:
1) initiatively pendulum lifts default angle, and temporary transient fixing;
2) by hold down gag " Z " font impact specimen is fixed on the pendulum of pedestal and slave pendulum;
3) two pointers with index dial reset;
4) discharge initiatively pendulum, impact slave pendulum, and then moment is broken sample;
5) angle of clashing into the back preshoot with slave pendulum initiatively put in record;
6), be calculated as follows the ballistic work W that sample consumes according to conservation of energy principle:
W＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)-W
E
Wherein, M
A, M
BBe respectively the quality of initiatively putting, θ with slave pendulum
A, θ
BBe respectively the angle of preshoot after initiatively pendulum clashes into slave pendulum, θ
0For initiatively putting the angle of initially lifting, L
A, L
BThe distance of centre of gravity that is respectively initiatively pendulum and slave pendulum is the distance of rotating shaft core separately, W
EBe the system loss energy, by not putting sample, by abovementioned steps 1), 3), 4), 5) test, be calculated as follows W then
E:
W
E＝M
AgL
A(cosθ
A-cosθ
0)-M
BgL
B(1-cosθ
B)。
9, according to the test method of the described double pendulum impact testing machine of claim 8, it is characterized in that: after the step 5), slave pendulum continues preshoot with pendulum initiatively, reach the extreme higher position after beginning to backswing, at this moment start brake system, two pendulum are slowly put down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100212459A CN1332194C (en) | 2004-04-07 | 2004-04-07 | Impacting tester with double pendulum and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100212459A CN1332194C (en) | 2004-04-07 | 2004-04-07 | Impacting tester with double pendulum and testing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680798A true CN1680798A (en) | 2005-10-12 |
| CN1332194C CN1332194C (en) | 2007-08-15 |
Family
ID=35067466
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100212459A Expired - Fee Related CN1332194C (en) | 2004-04-07 | 2004-04-07 | Impacting tester with double pendulum and testing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1332194C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278302A (en) * | 2013-05-17 | 2013-09-04 | 青岛科技大学 | Two-oscillating-bar angle keeping and instantaneous release device |
| CN103411841A (en) * | 2013-07-23 | 2013-11-27 | 青岛科技大学 | Shearing pin type double-pendulum rod impact testing machine |
| CN104345005A (en) * | 2013-08-04 | 2015-02-11 | 青岛博研达工业技术研究所(普通合伙) | Movable damping-adjustable double-swing rod impact tester |
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN107144411A (en) * | 2017-06-26 | 2017-09-08 | 歌尔股份有限公司 | Percussion device |
| WO2017206329A1 (en) * | 2016-06-02 | 2017-12-07 | 深圳朝伟达科技有限公司 | Combined pendulum test bench |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI60313C (en) * | 1979-10-10 | 1981-12-10 | Valtion Teknillinen | OMVAEND SLAGGEOMETRI VID SLAGPROV |
| JP2953415B2 (en) * | 1996-12-13 | 1999-09-27 | 日本電気株式会社 | Impact test equipment |
| CN2562180Y (en) * | 2002-08-15 | 2003-07-23 | 鞍山钢铁集团公司 | Metal material impact toughness numberical measuring instrument |
-
2004
- 2004-04-07 CN CNB2004100212459A patent/CN1332194C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278302A (en) * | 2013-05-17 | 2013-09-04 | 青岛科技大学 | Two-oscillating-bar angle keeping and instantaneous release device |
| CN103278302B (en) * | 2013-05-17 | 2015-07-01 | 青岛科技大学 | Two-oscillating-bar angle keeping and instantaneous release device |
| CN103411841A (en) * | 2013-07-23 | 2013-11-27 | 青岛科技大学 | Shearing pin type double-pendulum rod impact testing machine |
| CN103411841B (en) * | 2013-07-23 | 2016-04-06 | 青岛科技大学 | A kind of shearing pin double swing-bar impact testing machine |
| CN104345005A (en) * | 2013-08-04 | 2015-02-11 | 青岛博研达工业技术研究所(普通合伙) | Movable damping-adjustable double-swing rod impact tester |
| CN104345005B (en) * | 2013-08-04 | 2017-11-28 | 青岛科技大学 | A kind of moveable damp adjustable double swing-bar shock machine |
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN104897357B (en) * | 2015-04-08 | 2017-07-07 | 东北大学 | A kind of sheet metal tack-weld impact property test device and method |
| WO2017206329A1 (en) * | 2016-06-02 | 2017-12-07 | 深圳朝伟达科技有限公司 | Combined pendulum test bench |
| CN107144411A (en) * | 2017-06-26 | 2017-09-08 | 歌尔股份有限公司 | Percussion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1332194C (en) | 2007-08-15 |
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