CN104931311B - A kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample - Google Patents

A kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample Download PDF

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Publication number
CN104931311B
CN104931311B CN201510273936.6A CN201510273936A CN104931311B CN 104931311 B CN104931311 B CN 104931311B CN 201510273936 A CN201510273936 A CN 201510273936A CN 104931311 B CN104931311 B CN 104931311B
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sample
fixed block
panel
grip slipper
plate
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CN104931311A (en
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李创
方友震
肖勇
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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Abstract

The present invention relates to a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample, comprise the following steps:1), design grip slipper, the upper surface that the grip slipper has hollow inner space, grip slipper is provided with pad localization hole;2), fixed block, side fixed block in making;3)Upper fixed block, side fixed block are loaded the inner space of grip slipper;4)Test plate (panel) and addition plate clamping are entered into fixture;5)Tightening side fixed block puller bolt makes test plate (panel) keep concordant, and tightening fixed block puller bolt makes solder joint sample test plate (panel) and addition plate be compacted gapless with fixed block;6)The fixture of clamping test plate (panel) is positioned under suspension electrode holders and starts welding in the pressurization of simply supported beam state alignment pad localization hole, the addition plate at sample two ends is welded successively;7)The sample that will be welded is placed 13 minutes and gets product sample after clamper for disassembling after sample cooling.This method makes as a result of the multidirectional rigid constraint of special fixture will not be because external force produces extra irregular deformation before and after sample welding;Simultaneously sample be cooled in complete in the constraint of fixture, it is to avoid irregular thermal stress deformation.

Description

A kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample
Technical field
The present invention relates to a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample, for carrying out vehicle body steel plate point The production scene sample preparation of Welding fatigue behaviour data test.
Background technology
Spot-welding technology as important connecting mode, almost whole vehicle body is joined using spot-welding technology in vehicle production Connect and form, in vehicle CAE analysis, in particularly analyzing body structure, the fatigue behaviour of vehicle body steel plate solder joint is necessary Input data, therefore it is most important to CAE analysis to obtain accurate solder joint fatigue performance data.Fatigue test is irregular to sample Deformation is more sensitive, so whether the standard of sample preparation plays a crucial role to carrying out vehicle body steel plate solder joint fatigue performance test.Sample is not Standard, uniformity difference can directly affect follow-up fatigue test and interpretation of result, and experimental facilities sample preparation tends not to reflection in fact The fluctuation of border production technology.In order to more agree with the technique of actual welding, using actual production welding equipment and identical is used Welding procedure obtains solder joint fatigue sample and is tested the actual performance parameter that more can truly reflect vehicle solder joint.Current workshop life Product spot-welding equipment is generally movable hanging mash welder, and this equipment can produce initial pressure and the work due to itself in welding Dynamic property is big so as to cause certain vibrations, easily the irregular fever stress deformation near the positioning of influence sample, and follow-up solder joint Also it is uncontrollable, cause sample nonstandard and uniformity is poor, influence is produced on follow-up experiment and interpretation of result.Due to production Effective control of the scene without effective measures to sample uniformity and thermal stress deformation, at present temporarily weldering of the needleless to welding production scene The method for making sample of point fatigue testing specimen.
The content of the invention
Present invention aim at a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample is provided, by method system The sample for obtaining, solves because production scene hitch point welder initial press and the big impact to sample of own activity become Shape and due to the irregular warpage of thermal stress near solder joint after welding cause sample produce irregular deformation the problems such as.
In order to achieve the above object, technical scheme is as follows:
A kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample, it is characterised in that comprise the following steps:
1)According to the grip slipper of fatigue testing specimen specifications design dimension, the grip slipper has hollow inner space, folder The upper surface for holding seat is provided with pad localization hole;
2)Upper fixed block, side fixed block are made according to grip slipper and test plate (panel) specification;
3)Upper fixed block, side fixed block are loaded the inner space of grip slipper, the upper surface of grip slipper is set and upper fixation The corresponding upper fixed block puller bolt of block, the side of grip slipper sets side fixed block puller bolt corresponding with side fixed block;
4)Test plate (panel) and addition plate clamping are entered into fixture, by upper and lower test plate (panel) and up and down addition plate and grip slipper end part aligning, Gu Block is determined positioned at test plate (panel) and the upper surface of addition plate, and side fixed block is located at the side of test plate (panel) and addition plate;
5)Tightening side fixed block puller bolt makes test plate (panel) keep concordant, and tightening fixed block puller bolt tries solder joint sample Plate and addition plate are compacted gapless with fixed block;
6)The fixture of clamping test plate (panel) is positioned under suspension electrode holders and is pressurizeed in simply supported beam state alignment pad localization hole Start welding, the addition plate at sample two ends is welded successively;
7)The sample that will be welded is placed 1-3 minutes and gets product sample after clamper for disassembling after sample cooling.
The grip slipper also includes limited block, and the limited block is bolted on side fixed block two ends, for clamping Side fixed block.
The width of the grip slipper hollow space is more than solder joint sample test plate (panel) width and side fixed block width sum, with this just In follow-up test plate (panel) mounting and adjusting.
Upper surface on fixed piece is provided with the U-shaped adjustment tank of bolt, is easy to long according to addition Board position and sample Spend arbitrarily to adjust the placement location of upper fixed block to reach fixation.
The side fixation tile height is easy to follow-up adjustment position less than grip slipper internal height.
The good effect that the present invention has:
1st, tested with production equipment welded specimen by using actual production scene, examination is ensure that to greatest extent Sample is consistent with the welded condition and technological parameter of actual production part, with this specimen test acquired results carry out CAE analysis due to It is high with the actual spot-welding technology goodness of fit to improve precision of analysis;
2nd, test plate (panel) carries out clamping using the rigid clamping device, can avoid because caused by equipment vibrations and other external force Sample position relation changes, it is ensured that the stabilization of sample from start to finish position relationship, it is ensured that the uniformity of sample, is easy to Follow-up test clamping and interpretation of result;
3rd, sample carries out dismounting and ensure that sample will not be answered because of heat near solder joint again after the completion of welding after it is cooled down Power release causes sample that irregular deformation occurs, and can choose whether that making multiple such fixture carries out clamping according to sample quantities Welding, can effectively improve sample preparation efficiency, and sample preparation qualification rate has guarantee.
Brief description of the drawings
Fig. 1 is spot welding fatigue specimen clamping fixture schematic diagram;
Fig. 2 is fixture sectional view along its length shown in Fig. 1;
Fig. 3 is the top view of grip slipper;
Fig. 4 is the A-A sectional views in Fig. 3;
Fig. 5 is the end direction view of grip slipper shown in Fig. 3;
Fig. 6 is the schematic diagram of upper fixed block;
Fig. 7 is the U-shaped adjustment tank schematic diagram of bolt on upper fixed block;
Fig. 8 is side fixed-block-architecture (FBA) schematic diagram;
Fig. 9 is solder joint fatigue sample test plate (panel) clamping schematic diagram.
Specific embodiment
The invention will be further described with embodiment for explanation below in conjunction with the accompanying drawings:
As Figure 1-5, for making the fixture of vehicle body steel plate spot welding fatigue sample, including grip slipper 1, grip slipper 1 by The ducted body that upper plate 11, lower plate 12 and two side plates 13 are surrounded is constituted, hollow space therein 14 as sample installation region, Test pad localization hole 3, fixed pad localization hole 2 and puller bolt mounting hole 15 are provided with the upper plate of grip slipper 1, spiral shell is held out against Fixed block puller bolt 4 is provided with bolt mounting hole 15, one of side plate 13 of grip slipper 1 is also equipped with puller bolt peace Dress hole 15, is provided with side fixed block puller bolt 5 on the puller bolt mounting hole 15 of side plate.
Sample 9 is shelved in hollow space 14, and the upper surface of sample 9 is shelved with fixed block 8, and longitudinal side is shelved with side Fixed block, upper fixed block 8 and upper fixed block puller bolt 4 are corresponding, and side fixed block and side fixed block puller bolt 5 are corresponding, After tightening fixed block puller bolt 4 and side fixed block puller bolt 5, sample 9 is clamped in by upper fixed block and side fixed block Hold in seat 1.
As shown in fig. 6-7, the upper surface of upper fixed block 8 has a U-shaped adjustment tank 21 of bolt, upper fixed block 8 be mainly used in from The top of grip slipper 1 applies pressure and is fixed by the extruding of puller bolt 4 to sample 9, and the U-shaped adjustment tank 21 of bolt of setting can To be adjusted premised on not interferenceing with movable hanging pliers spot welding head welding electrode according to size of sample.
Fig. 8 gives the structural representation of side fixed block, and side fixed block is mainly used in from the side of grip slipper 1 by holding out against spiral shell The extruding of bolt 5 applies pressure to sample 9 makes sample 9 align all the time and fixed, due to being fixed using bolt, so that will not be due to one As vibrations cause the deformation of specimen clamping.
The end of side fixed block is provided with limited block mounting hole 22, and the end of side fixed block passes through limited block 6 and bolt quilt Limited block 6 is fixed, the fixation of the offside fixed block of limited block 6, it is therefore prevented that side fixed block deviates grip slipper because of external force.By spiral shell Nail fix, so as to remain the integrality of fixture, not because fall or other vibrations cause clamping deflection.
Fig. 9 is the structural representation of sample, including two test plate (panel)s 91 and two addition plates 92, and whole sample is divided into two-layer, Upper strata is a test plate (panel) 91 and an addition plate 92, and lower floor is addition plate 92 and a test plate (panel) 91, bilevel addition Plate 92 and the position of test plate (panel) 91 interlock.
Specific sample method for making sample:
1st, according to the fatigue testing specimen specification and suspension mash welder specifications design grip slipper 1 that will be made, grip slipper is two about 1 Test pad localization hole 3 and fixed pad localization hole 2 have been preset in face for suspension spot welding electrode, test pad localization hole 3 and solid Determine pad localization hole 2 corresponding with the fixed position of solder joint 94 with the test solder joint 93 of sample respectively, the top surface of grip slipper 1 is provided with solid Surely the puller bolt mounting hole 15 of the upper fixed block 8 of plate 92 is added, side is provided with the puller bolt mounting hole 15 of side fixed block, The width of the hollow space 14 of grip slipper 1 is more than the width of solder joint sample test plate (panel) 91 and side fixed block width sum, after being easy to this Continuous test plate (panel) mounting and adjusting.
2nd, according to fixed block 8 in the fatigue testing specimen specifications design that will be made, fixed block is provided with 2 on this, to reach The addition plate 92 at butt welding point sample two ends is fixed, and fixed block 8 is engaged with the puller bolt 4 above grip slipper 1 on this, should The U-shaped adjustment tank 21 of bolt is provided with upper fixed block 8, is easy to arbitrarily adjust upper fixation according to addition Board position and specimen length The placement location of block and not because vibrations and external force glance off sample, and makes sample protect all the time to reach fixation Maintain an equal level neat;It is not more than test plate (panel) width at upper fixed block maximum gauge, it is to avoid interfere with side fixed block.
3rd, according to the fatigue testing specimen specifications design side fixed block that will be made, the side fixed block end is provided with limited block peace Dress hole 22, the effect of the side fixed block is, to solder joint fatigue sample test plate (panel) is extruded in grip slipper, to make examination by bolt pressure Plate is mutually extruded with the opposite side of grip slipper 1 and reaches longitudinally-aligned purpose, and not because vibrations and external force make sample occur partially Tiltedly, sample is made to remain concordant in pinpoint welding procedure.Side fixation tile height is slightly less than grip slipper internal height and is easy to subsequently Adjustment position.
4th, according to grip slipper specification and side fixed block specifications design limited block, the limited block 6 is provided with installation screwed hole, should Limited block 6 is mainly used in offside fixed block and plays position-limiting action, is unlikely to because frequently clamping and vibrations make side fixed block inclined From the integrality of grip slipper and holding jig, it is to avoid fixture is imperfect and need to re-assembly to lose time;Spacing tile height is not More than grip slipper highly, avoiding clamping sample rear clamping device from rocking.
5th, the restrictive cooling of sample, enters fixture, by the folder after clamping test plate (panel) by test plate (panel) according to sample morpheme relation clamping Tool is positioned over production scene suspension mash welder scene, and fixture is positioned into simply supported beam state, starts to be welded using mash welder, welding electrode The pressurization welding of welding electrode location hole 10 is put in, the welding of test plate (panel) and addition plate solder joint is carried out successively, after the completion of whole sample welding first Do not dismantled, wait dismantled again after after sample cooling within 1-3 minutes, then other test plate (panel)s are installed with fixture and welded, such as needed weldering Connect sample more, can be put using multiple test plate (panel)s clampings carries out sample erecting and welding, it is to avoid the cooling stand-by period, improve sample preparation Efficiency.
Above example has been shown and described general principle of the invention and principal character and advantages of the present invention.The industry Technical staff it should be appreciated that the present invention is not limited to the above embodiments, described in above-described embodiment and specification simply Principle of the invention is illustrated, rather than the scope of the present invention is limited by any way, without departing from the scope of the invention, Various changes and modifications of the present invention are possible, and these changes and improvements are both fallen within claimed scope.

Claims (5)

1. a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample, it is characterised in that comprise the following steps:
1)According to the grip slipper of fatigue testing specimen specifications design dimension, the grip slipper has hollow inner space, grip slipper Upper surface be provided with pad localization hole;
2)Upper fixed block, side fixed block are made according to grip slipper and test plate (panel) specification;
3)Upper fixed block, side fixed block are loaded the inner space of grip slipper, the upper surface of grip slipper is set and upper fixed block pair The upper fixed block puller bolt answered, the side of grip slipper sets side fixed block puller bolt corresponding with side fixed block;
4)Test plate (panel) and addition plate clamping are entered into fixture, by upper and lower test plate (panel) and up and down addition plate and grip slipper end part aligning, upper fixation Block is located at the upper surface of test plate (panel) and addition plate, and side fixed block is located at the side of test plate (panel) and addition plate;
5)Tightening side fixed block puller bolt makes test plate (panel) keep concordant, tighten fixed block puller bolt make solder joint sample test plate (panel) and Addition plate is compacted gapless with fixed block;
6)The fixture of clamping test plate (panel) is positioned under suspension electrode holders and is started in the pressurization of simply supported beam state alignment pad localization hole Welding, is welded the addition plate at sample two ends successively;
7)The sample that will be welded is placed 1-3 minutes and gets product sample after clamper for disassembling after sample cooling.
2. a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample as claimed in claim 1, it is characterised in that institute Stating grip slipper also includes limited block, and the limited block is bolted on side fixed block two ends, for clamping side fixed block.
3. a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample as claimed in claim 1, it is characterised in that institute The width of grip slipper hollow space is stated more than solder joint sample test plate (panel) width and side fixed block width sum, follow-up test plate (panel) is easy to this Mounting and adjusting.
4. a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample as claimed in claim 1, it is characterised in that institute State the upper surface on fixed block and be provided with the U-shaped adjustment tank of bolt, be easy to arbitrarily be adjusted according to addition Board position and specimen length The placement location of whole upper fixed block is reaching fixation.
5. a kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample as claimed in claim 1, it is characterised in that institute State side fixation tile height and be easy to follow-up adjustment position less than grip slipper internal height.
CN201510273936.6A 2015-05-26 2015-05-26 A kind of vehicle body steel plate spot welding fatigue sample production scene method for making sample Active CN104931311B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203636192U (en) * 2013-12-06 2014-06-11 上汽通用五菱汽车股份有限公司 Vehicle body surface auto-welding mechanism
CN104228721A (en) * 2014-09-30 2014-12-24 北京长安汽车工程技术研究有限责任公司 White vehicle body, storage battery fixing support of white vehicle body and welding method
CN104249211A (en) * 2013-06-26 2014-12-31 北汽福田汽车股份有限公司 Carbon-dioxide gas shielded welding method for automotive outer parts
CN104493403A (en) * 2014-11-21 2015-04-08 芜湖普威技研有限公司 Improved device of automobile gutter channel fixture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11200075A (en) * 1998-01-16 1999-07-27 Ishikawajima Harima Heavy Ind Co Ltd Stress corrosion cracking introduction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104249211A (en) * 2013-06-26 2014-12-31 北汽福田汽车股份有限公司 Carbon-dioxide gas shielded welding method for automotive outer parts
CN203636192U (en) * 2013-12-06 2014-06-11 上汽通用五菱汽车股份有限公司 Vehicle body surface auto-welding mechanism
CN104228721A (en) * 2014-09-30 2014-12-24 北京长安汽车工程技术研究有限责任公司 White vehicle body, storage battery fixing support of white vehicle body and welding method
CN104493403A (en) * 2014-11-21 2015-04-08 芜湖普威技研有限公司 Improved device of automobile gutter channel fixture

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