CN100567945C - Portable vehicle exterior cladding element deformation stiffness tester - Google Patents

Portable vehicle exterior cladding element deformation stiffness tester Download PDF

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Publication number
CN100567945C
CN100567945C CNB2006100270792A CN200610027079A CN100567945C CN 100567945 C CN100567945 C CN 100567945C CN B2006100270792 A CNB2006100270792 A CN B2006100270792A CN 200610027079 A CN200610027079 A CN 200610027079A CN 100567945 C CN100567945 C CN 100567945C
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China
Prior art keywords
vehicle exterior
cladding element
slide block
exterior cladding
portable vehicle
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CNB2006100270792A
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CN101082556A (en
Inventor
徐伟力
俞宁峰
谢建平
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CNB2006100270792A priority Critical patent/CN100567945C/en
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Abstract

Portable vehicle exterior cladding element deformation stiffness tester comprises longeron and is fixed in crossbeam on first slide block on the sheathed longeron, drives first slide block by first screw rod and moves up and down, and then drive crossbeam and move up and down; Second slide block set is located on the crossbeam, and drives the second slide block side-to-side movement by second screw rod; Load measuring mechanism and be connected on second slide block by the transmission adjusting mechanism, it comprise body and be arranged at motor in it, cogwheel gearing, screw component, loading polished rod and on displacement transducer, pressure transducer.Tester of the present invention adopts composite frame structure, can adjust arbitrarily the testing site of difformity covering at three dimensions, by the testing site is applied normal load, measure the rigidity of covering, and provide the load-displacement curve of testing site, judge the reasonable material of vehicle exterior cladding element deformation stiffness ability, stability and vehicle exterior cladding element with this.

Description

Portable vehicle exterior cladding element deformation stiffness tester
Technical field
The present invention relates to a kind of mechanical property tester, particularly the testing apparatus of vehicle exterior cladding element deformation stiffness.
Background technology
Along with the car industrial development, the user requires more and more higher to the manufacturing of coachbuilt body, usability after part punching is shaped receives publicity day by day, one of them is the rigidity of car covering, the deformation rigidity test is the special test method of specially auto parts (vehicle body outer covering piece) after being shaped being carried out the rigidity assessment, test findings can reflect that bodywork parts is subjected to extraneous load (or external energy) to do the time spent resistance to deformation, the ability that keeps dimensionally stable, a kind of abroad new model is in the Development and Trial process, often need through a large amount of tests, the covering rigidity is assessed, requiring the whole anti-recessed rigidity of covering as: design department of French Renault is that to be no more than 1.0mm in the displacement of 10kg loading lower recess be qualified, and U.S. Ke Lesilai and Ford Motor Company are 6kg to the design load of covering critical load.At present, the deformation rigidity test does not also have unified test standard and evaluation index at home and abroad.
At present, the certain methods and the device of the test of the existing both at home and abroad deformation rigidity that is used for vehicle exterior cladding element, the hand that adopts as some automobile factory be by method, the rigidity of feeling to pass judgment on part of covering being exerted pressure by hand.The rigidity of part is passed judgment on by some automobile factory to the covering pressurized by counterweight, also some automobile factory is by being equipped with the hand held pressurizer of force transducer, covering is pressurizeed, though said method can have certain understanding to the rigidity of covering, but owing to be manually to carry out, the precision of its repeatability and test findings is very poor, only can provide data qualitatively.
Referring to Fig. 1, it is depicted as auto parts dent resistance testing machine, comprise test base 1a and fix door-shaped frame 7a on it, crossbeam 6a is arranged on the door-shaped frame 7a, loading system 5a and press sub-4a to be arranged on the crossbeam 6a, test platform 2a is positioned on test base 1 a, and test specimen 3a to be measured is positioned on the test platform 2a.The sub-4a of loading system 5a drive pressure treats the test that test block 3a does deformation rigidity.
Though this testing machine also can carry out the test of automobile panel deformation rigidity, its restriction is a lot, must carry out, tests that as accessory size, test the back part is scrapped in the laboratory etc.Domestic and international advanced automobile factory is for to automotive safety, and the needs of the energy-conservation and environmental protection of loss of weight adopt the outer covering piece of high-strength plate as automobile one after another, and proposed corresponding deformation rigidity requirement.The vehicle exterior cladding element deformation stiffness test is the special test method of specially auto parts (vehicle body outer covering piece) after being shaped being carried out the rigidity assessment, test findings can reflect that bodywork parts is subjected to extraneous load (or external energy) to do the time spent resistance to deformation, keeps the ability of dimensionally stable.
Summary of the invention
Defective at above-mentioned prior art, the object of the present invention is to provide a kind of dismountable portable vehicle exterior cladding element deformation stiffness tester, can carry out rigidity to vehicle exterior cladding element at the scene detects, by real-time detection, abundant warranty test result's the repeatability and the precision of test findings, quantitatively provide the long run test data of testing site, can instruct the optimization of mould, reach the requirement of design outer covering piece rigidity.
For achieving the above object, technical scheme of the present invention is,
Portable vehicle exterior cladding element deformation stiffness tester comprises, longeron, and a pivot is fixed in its upper end; First brace summer, the one end connects the pivot of longeron upper end; First screw rod, one end connect the first brace summer other end, and a spanner is also established in this end; First slide block, the one end is sheathed on the longeron, and the other end cooperates with first screw flight; Crossbeam, one end are fixed on first slide block, and a pivot is fixed in the other end; Second brace summer, the one end connects the pivot of crossbeam upper end; Second screw rod, one end connect the second brace summer other end, and a spanner is also established in this end, and the other end is fixed on the crossbeam by a fixed mount; Second slide block, the one end is sheathed on the crossbeam, and the other end cooperates with second screw flight; The transmission adjusting mechanism is connected on second slide block, comprises, and connected body, its upper surface is provided with the outer, and this outer is movably set under second slide block by fixture block, and it also has a cavity body structure, this cavity body structure lower openings; Scroll bar, an end are inserted in the connected body cavity body structure, and the other end is established a spanner; Turbine is arranged in the connected body cavity body structure, cooperates with scroll bar; Load measuring mechanism, comprise, body, its upper end is connected in the turbine of transmission adjusting mechanism, and it is a shell structure, and the lower end is provided with a through hole; Motor is arranged in the body casing body structure; Cogwheel gearing, an end connects motor output shaft; Screw component is connected in the other end of cogwheel gearing; Load polished rod, cooperate with screw component, the one end stretches in body lower end through hole; Pressure head is arranged at and loads the polished rod bottom; Displacement transducer is arranged at and loads the polished rod bottom; Pressure transducer is arranged at and loads the polished rod bottom.
Establish soft liner between the described longeron and first slide block, crossbeam and second slide block, this soft liner can be the nylon liner, makes when mobile and the flexibility of beam surface of contact, reduces the influence to moving of weight and center of gravity.
Also comprise magnetic bases, described longeron is fixed on the magnetic bases.
The tester of going back of the present invention is provided with locking device, and it comprises locking member and spanner, and this locking member passes first slide block against soft liner, and the locking member and the first slide block threaded engagement connect spanner on it.
The locking member of described locking device is the tight project organization of twin-lock, has eliminated the influence to the equipment rigidity of crossbeam, the weight that loads measuring mechanism and position.
Described turbine center is provided with the tuning drive gear that can indicate pendulum angle.
Described turbine is a fan type turbine.
Described motor is a stepper motor.
Pivot with second brace summer and crossbeam upper end between the pivot of described first brace summer and longeron upper end also is provided with bearing.
Also be provided with bearing between described first screw rod and first brace summer and between second screw rod and second brace summer.
Described displacement transducer is grating displacement sensor very.
The transmission adjusting mechanism of tester of the present invention also comprises a positioning block, and this locating piece is connected in second slide block by bolt, and described connected body cavity body structure top is limited in this locating piece.
Described transmission adjusting mechanism also comprises locking member, and this locking member passes the outer of fixture block against connected body.
Because characteristics such as many curved surfaces of tested automobile panel, non-level, not contour and testing apparatus need be easy to carry, work at the scene, for this reason, when design, based on following some consideration:
1. be designed to detachable beam type, to satisfy field demand and easy to carry.
2. the testing site adopts in length and breadth that beam moves coarse positioning, and load maintainer is accurately located, to satisfy the many curved surfaces of part, non-level, not contour characteristics.
3. load maintainer can be realized the vertical loading of any part curved surface, to improve the comparability and the accuracy of data.
Beneficial effect of the present invention
Portable vehicle exterior cladding element deformation stiffness tester of the present invention adopts composite frame structure, can adjust arbitrarily the testing site of difformity covering at three dimensions, by the testing site is applied normal load, measure the rigidity of covering, and provide the load-displacement curve of testing site.Be the quantizating index of evaluation vehicle exterior cladding element deformation stiffness, for the reasonable material of judging vehicle exterior cladding element deformation stiffness ability, stability and vehicle exterior cladding element provides foundation.
Description of drawings
Fig. 1 is the structural representation of existing vehicle exterior cladding element deformation stiffness test board;
Fig. 2 is the structural representation of portable vehicle exterior cladding element deformation stiffness tester of the present invention.
Embodiment
Referring to Fig. 2, portable vehicle exterior cladding element deformation stiffness tester of the present invention comprises, longeron 1, and a pivot 11 is fixed in its upper end; First brace summer 2, the one end connects the pivot 11 of longeron 1 upper end; First screw rod 3, one end connect first brace summer, 2 other ends, and a spanner 12 is also established in this end; First slide block 4, one end are sheathed on the longeron 1, the other end and first screw rod, 3 threaded engagement; Crossbeam 5, one end are fixed on first slide block 4, and a pivot 13 is fixed in the other end; Second brace summer 6, the one end connects the pivot 13 of crossbeam 5 upper ends; Second screw rod 7, one end connect second brace summer, 6 other ends, and a spanner 14 is also established in this end, and the other end is fixed on the crossbeam 5 by a fixed mount 23; Second slide block 8, one end are sheathed on the crossbeam 5, the other end and second screw rod, 7 threaded engagement; One magnetic bases 21, described longeron 1 is fixed on the magnetic bases 21; First screw rod, 3 bottoms are provided with a locating part 22.
Transmission adjusting mechanism 9, be connected on second slide block 8, comprise, connected body 91, its upper surface is provided with outer 911, and this outer 911 is movably set in second slide block 8 times by fixture block 92, and it also has a cavity body structure 90, and spacing by the locating piece 96 and the bolt 97 that are positioned at this cavity body structure 90, are connected in second slide block 8, this cavity body structure lower openings 901; Scroll bar 93, one ends are inserted in connected body 91 cavity body structures 90, and the other end is established a spanner 95; Turbine 94 is arranged in the connected body cavity body structure 90, is fixed in connected body 91 by coupling shaft 98, and cooperates with scroll bar 93, and this turbine 93 is a fan type turbine, and its center is provided with the tuning drive gear 941 that can indicate pendulum angle; Locking member 99 passes the outer 911 of fixture block 92 against connected body 91, and behind connected body 91 location, locking member 99 can lock connected body 91 and rotate, and then breaks away from connected body 91 outers 911 during adjustment.
Load measuring mechanism 10, comprise, body 101, its upper end is connected in the turbine 93 of transmission adjusting mechanism 9, and it is a shell structure, and the lower end is provided with a through hole 1011; Motor 102 is arranged in the body casing body structure, and this motor is a stepper motor; Cogwheel gearing 103, i.e. gear assembly, an end connects motor 102 output shafts; Screw component 104 is connected in the other end of cogwheel gearing 103; Load polished rod 105, cooperate with screw component 104, the one end stretches in body 101 lower end through holes 1011; Pressure head 108 is arranged at and loads polished rod 105 bottoms; Displacement transducer 106 is arranged at and loads polished rod 105 bottoms, and this displacement transducer is grating displacement sensor very; Pressure transducer 107 is arranged at and loads polished rod 105 bottoms.
See also Fig. 2 again, establish soft liner 15,15 ' between the described longeron 1 and first slide block 4, crossbeam 5 and second slide block 8, this soft liner is the nylon liner.
Tester of the present invention also is provided with locking device 16, it is the tight project organization of twin-lock, comprise locking member 161,162 and spanner 163,164, this locking member 161,162 passes first slide block 4 against soft liner 15, locking member 161,162 and first slide block, 4 threaded engagement connect spanner 163,164 on it.
Referring to Fig. 2, the pivot 13 of between the pivot 11 of described first brace summer 2 of tester of the present invention and longeron 1 upper end and second brace summer 6 and crossbeam 5 upper ends also is provided with between bearing 17,18, the first screw rods 3 and first brace summer 2 and between second screw rod 7 and second brace summer 6 and also is provided with bearing 19,20.The two ends of described first brace summer 2, second brace summer 6 have groove 21,22,61,62, and described bearing 17~20 is embedded at groove 21,22,61,62 respectively.
Tester of the present invention is placed by the sample of having done experiment a mark on the on-the-spot mould trolley of punching press and having fixed, according to the position, testing site of sample, height and and the surface level angle, first brace summer 2, first screw rod 3, crossbeam 5 can longeron 1 upper end pivot 11 be the center rotation, and by first screw rod 3, second screw rod, the 7 preliminary positions of adjusting the transmission adjusting mechanism 9 that is driven by second slide block 8 and then adjusting, load pressure head 108 in the measuring mechanism 10.
Loading measuring mechanism 10 rotates at surface level 360 degree by transmission adjusting mechanism 9, rotating scroll bar 93 by spanner 95 swings connection fan type turbine 94 in vertical plane, turbine 94 center push rod tuning drive gear indications load the angle of measuring mechanism 10 swings, make to load measuring mechanism 10 pressure heads 108 accurate, perpendicular alignmnet testing sites.
Loading measuring mechanism 10 adopts the controlled stepper motor of high precision as mechanism's power, certain reduction gear ratio gear, screw component 104 transmission of power by cogwheel gearing 103 are given loading polished rod 105, drive 108 pairs of samples of pressure head that pressure transducer 107 is housed by loading polished rod 105 (loading grating displacement sensor 106 on it) and load.
Make the testing site pressurized by setting test parameters and automatically testing, show trial curve in real time.By the needed testing site of computed in software rigidity.
Adopt this instrument of deformation stiffness tester of invention that the right front external door panel drawn component of S11 is carried out stiffness measurement in certain automobile factory, the used plate size of this part is 0.8mm * 1300mm * 1320mm, utilizes the geometric properties of part to determine identical test position.Test result is as follows:
This instrument has higher measuring accuracy, is respectively 17.698N/mm and 17.440N/mm to the measurement result with the right front external door panel drawn component deformation rigidity of DC04 and the punching press of B 180H1 material under identical diel and the process conditions thereof; 21.396N/mm and 21.679N/mm, the measurement result of two kinds of steel grade drawn components and correlation analysis result are in full accord;
These apparatus measures data have higher reproducibility, the stack pile under the same process condition, very approaching with the drawn component test data of steel grade, and error is in allowed band.
The invention provides a kind of removable portable equipment and the test method that can carry out the deformation rigidity test in the press workshop of automobile factory to vehicle exterior cladding element, can quantitatively provide the test figure of testing site, thoroughly change the method for testing of feeling judge detail rigidity of past at the press workshop armrest.

Claims (15)

1. portable vehicle exterior cladding element deformation stiffness tester is characterized in that, comprise,
Longeron, a pivot is fixed in its upper end;
First brace summer, the one end connects the pivot of longeron upper end;
First screw rod, one end connect the first brace summer other end, and a spanner is also established in the end of this first screw rod;
First slide block, the one end is sheathed on the longeron, and the other end cooperates with first screw flight;
Crossbeam, one end are fixed on first slide block, and a pivot is fixed in the other end;
Second brace summer, the one end connects the pivot of crossbeam upper end;
Second screw rod, one end connect the second brace summer other end, and a spanner is also established in the end of this second screw rod, and the other end of this second screw rod is fixed on the crossbeam by a fixed mount;
Second slide block, the one end is sheathed on the crossbeam, and the other end cooperates with second screw flight;
The transmission adjusting mechanism is connected on second slide block, comprises,
Connected body, its upper surface is provided with the outer, and this outer is movably set under second slide block by fixture block, and this connected body also has a cavity body structure, this cavity body structure lower openings;
Scroll bar, an end are inserted in the connected body cavity body structure, and the other end is established a spanner;
Turbine is arranged in the connected body cavity body structure, cooperates with scroll bar;
Load measuring mechanism, comprise,
Body, its upper end is connected in the turbine of transmission adjusting mechanism, and this body is a shell structure, and the lower end is provided with a through hole;
Motor is arranged in the body casing body structure;
Cogwheel gearing, an end connects motor output shaft;
Screw component is connected in the other end of cogwheel gearing;
Load polished rod, cooperate with screw component, an end of this loading polished rod stretches in body lower end through hole;
Pressure head is arranged at and loads the polished rod bottom;
Displacement transducer is arranged at and loads the polished rod bottom;
Pressure transducer is arranged at and loads the polished rod bottom.
2. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, also comprises magnetic bases, and described longeron is fixed on the magnetic bases.
3. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, establishes soft liner between the described longeron and first slide block, crossbeam and second slide block.
4. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 3 is characterized in that, described soft liner is the nylon liner.
5. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1, it is characterized in that, also be provided with locking device, it comprises locking member and spanner, this locking member passes first slide block against the soft liner that is arranged between the longeron and first slide block, the locking member and the first slide block threaded engagement connect spanner on this locking member.
6. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 5 is characterized in that, the locking member of described locking device is the tight project organization of twin-lock.
7. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, described turbine center is provided with the tuning drive gear that can indicate pendulum angle.
8. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, described turbine is a fan type turbine.
9. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, described motor is a stepper motor.
10. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, also is provided with bearing between the pivot of described first brace summer and longeron upper end and between the pivot of second brace summer and crossbeam upper end.
11. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, also is provided with bearing between described first screw rod and first brace summer and between second screw rod and second brace summer.
12. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, described displacement transducer is a grating displacement sensor.
13. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1 is characterized in that, the described first screw rod bottom is provided with a locating part.
14. portable vehicle exterior cladding element deformation stiffness tester as claimed in claim 1, it is characterized in that, described transmission adjusting mechanism also comprises a positioning block, and this locating piece is connected in second slide block by bolt, and described connected body cavity body structure top is limited in this locating piece.
15., it is characterized in that described transmission adjusting mechanism also comprises locking member as claim 1 or 14 described portable vehicle exterior cladding element deformation stiffness testers, this locking member passes the outer of fixture block against connected body.
CNB2006100270792A 2006-05-30 2006-05-30 Portable vehicle exterior cladding element deformation stiffness tester Active CN100567945C (en)

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Application Number Priority Date Filing Date Title
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CN100567945C true CN100567945C (en) 2009-12-09

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