CN204556212U - A kind of sheet metal tack-weld impact property proving installation - Google Patents
A kind of sheet metal tack-weld impact property proving installation Download PDFInfo
- Publication number
- CN204556212U CN204556212U CN201520212997.7U CN201520212997U CN204556212U CN 204556212 U CN204556212 U CN 204556212U CN 201520212997 U CN201520212997 U CN 201520212997U CN 204556212 U CN204556212 U CN 204556212U
- Authority
- CN
- China
- Prior art keywords
- pendulum
- impact
- weld
- tack
- jaw
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of by impact testing machine, slam fixture, control system, the sheet metal tack-weld impact property proving installation of Data collection and precessing system composition, during by its test point soldered joint impact property, on the moving jaw that sample two ends are separately fixed at slam fixture and regular jaws, pendulum is utilized to apply shock load to tack-weld, tack-weld is ruptured, impulsive force suffered by the tack-weld that data acquisition system is measured by the force cell be located between regular jaw and regular jaw bearing, the sample free end travel of being measured by the laser displacement sensor of moving jaw side and pendulum angle, data handling system provides the ultimate load characterizing tack-weld impact property, ultimate load displacement, ultimate load impact absorbing energy, total impact absorbing energy, impact force-time curve, displacement-time curve, speed-time curve, force-displacement curve, impact absorbing energy-time curve, in order to evaluate and to study the impact property of tack-weld.
Description
Technical field
The utility model relates to solder technology, particularly a kind of sheet metal tack-weld impact property proving installation.
Background technology
The spot welding Joining Technology of sheet metal is widely used in automobile manufacturing field, and the strength of joint of tack-weld directly affects safety and the serviceable life of body of a motor car, is the important indicator evaluating vehicle safety performance.Past, mainly static method is adopted to the test of tack-weld intensity, namely for spot-welding samples such as various tensile shear, cross stretching or stretch releases, apply quasistatic pulling force, obtain the maximum load-carrying capacity (ultimate load) when tack-weld destroys, corresponding ultimate load moment sample deflection (displacement) and absorb the parameter such as failure mode (nugget is extracted, interfacial separation) of merit, solder joint.But during automobile generation traffic hazard normally in running at high speed, now bodywork component and the tack-weld being connected these components are subject to the effect of High Loading Rate.Under shock load condition, the load-bearing capacity, distortion, absorption merit etc. of tack-weld are very large with quiescent conditions difference, therefore, there is significant limitation in the strength of joint carrying out evaluation point soldered joint by the result of static test, can not reflect the dynamic property of tack-weld.For this reason, the research carrying out tack-weld dynamic performance testing and evaluation is needed.
The impact property of sheet metal tack-weld is evaluated and studied, needs to measure ultimate load that tack-weld can bear under impact condition, ultimate load displacement, ultimate load impact absorbing energy, always absorb the parameters such as merit.For this reason, need to measure or calculate that impulsive force changes in time, displacement changes in time, speed changes in time, impact absorbing energy changes in time, impulsive force is with curves such as change in displacement.
Because spot-welding sample structurally exists unevenness, namely the microstructure of spot area material is different from virgin metal sheet with mechanical property, suffered by tack-weld there is diversity in the form of shock load, as tensile shear, just stretch, stretch release and combined load etc., solder joint adjacent material generation plastic yield in test loading procedure, and require the speed of shock load and the reason such as energy variation scope is large, the impact property of Measurement accuracy and thoroughly evaluating tack-weld is caused to become very difficult, testing efficiency is low, and cost is high.In addition, due to the existence of various spot defects, and the reason such as size, site error existed in the making and installation process of spot-welding sample, further cause accuracy and the poor repeatability of test result, the problems such as data scatter is larger.These unfavorable factors seriously hinder development and the application of spot welding shock-testing technology.
At present for the standard Charpy impact machine tester of Impact Properties of Materials detection, generally by base, sample bearing, pendulum, energy index plate and pointer and get swinging mechanism, safety pin etc. and form, adopt the standard sample of band V-notch, be of a size of 10 × 10 × 55mm.The ballistic work of measured parameter mainly material.Due to the structural particularity of tack-weld sample and the particular/special requirement to parameter measurements such as impulsive force, displacement and ultimate load impact absorbing energies, the standard Charpy impact machine tester of making cannot be used for the test of tack-weld impact property.
No. ZL02252726.5 patent document discloses a kind of tensile shock tester, comprises testing machine body, measurement mechanism, pendulum and test sample clamping mechanism.During measurement, on the regular jaw that the two ends of sample are separately fixed at clamping mechanism and moving jaws, swung by the one way of pendulum and energy is provided, " U " shape pendulum primary drying hits moving jaw, sample is destroyed under higher stretcher strain speed, moving jaw is dished out together with a part for sample, measures the gauge length before and after pendulum consumed energy and sample destruction, calibrated, to calculate sample tensile yield strength and permanent breaking elongation.Because this tensile shock tester designs for the test tensile yield strength of plastics and permanent breaking elongation, measure sheet metal tack-weld with it, the parameter such as impulsive force and displacement in impact process can not be measured.
In order to the impact property of test point soldered joint, No. 200410021245.9, ZL patent document discloses a kind of double pendulum type impact testing machine and test method.The impact part of this testing machine is made up of active pendulum, driven pendulum, sample base and hold down gag etc., and test sample is " Z " font sample.During test, one end of sample is firmly connected by hold down gag with driven pendulum, and the other end is connected by hold down gag with sample base.Initiatively pendulum falls from initial position, clashes into driven pendulum, is thrust by sample point soldered joint, calculates impact absorbing energy according to dump energy after active pendulum zero energy and active pendulum and slave pendulum hammering blow.Document " Study of Dynamic Performance of Advanced High Strength Steel (AHSS) Resistance SpotWelds " (Dissertation by Amir Ali Rahim Pour Shayan, The University of Toledo, 2006) method that this testing machine measures impulsive force and displacement is described, wherein impulsive force adopts four strain-type force unit to measure, these four load cell are arranged on strong point place below sample base, in impact process, impulsive force applies tilting moment to sample base, support reaction is produced at four load cell places, utilize the statical equilibrium relation of above-mentioned support reaction and sample base can calculate impulsive force suffered by tack-weld.This testing machine adopts reflective optical fiber displacement sensor to measure the displacement of spot-welding sample in impact process, concrete grammar installs a reflective mirror on the tup of driven pendulum, utilizes the distance between fiber sensor measuring sensor end and reflective mirror to measure the displacement of sample.Above-mentioned testing machine adopts the benefit of double pendulum hammer to be to utilize driven pendulum to be thrust the energy of part to measure sample, and then improves the accuracy that impact absorbing energy measures.This patent documentation only gives the measuring method of this testing machine to total impact absorbing energy, does not provide the measuring method that ultimate load absorbs merit.This testing machine does not directly measure impulsive force, but the support reaction utilizing four load cell to measure obtains impulsive force by conversion, and because dynamometry loop structure is complicated, intermediate conversion links is many, affects the accuracy of impact force measurements result.In addition, adopt double pendulum hammer scheme, testing machine structure is complicated, and there is specimen size error and alignment error, easily cause the shock contact site of initiatively pendulum and driven pendulum to occur in top or the bottom of driven pendulum, affect the transmission of impact energy, also affect the accuracy of measurement.Further, make " Z " font sample to need special former.
Utility model content
For above-mentioned prior art Problems existing and defect, the purpose of this utility model is to provide a kind of measurement result accurately and reliably and the sheet metal tack-weld impact property proving installation that can obtain for evaluating and study whole parameter and curve needed for sheet metal tack-weld impact property and the method using this device to test sheet metal tack-weld impact property.
For achieving the above object, the sheet metal tack-weld impact property proving installation that the utility model provides, comprises impact testing machine, slam fixture, control system, data acquisition system (DAS) and data handling system; Described impact testing machine by base, column, balance staff, pendulum, pivot angle index dial, get swinging mechanism and safety pin forms; Described column is fixedly mounted on base, described pivot angle index dial and get the upper end that swinging mechanism is arranged on column, and safety pin is arranged on the middle part of column; Wherein get swinging mechanism to be made up of servomotor and clutch coupling; Described pendulum is become with the pendulum head group being arranged on fork lower end by fork, and the upper end of fork is arranged on by turning set on the balance staff of column upper end, and described pendulum head is " U " shape, its biside plate respectively has a balancing weight; The biside plate of described pendulum head has horn opening respectively, the bottom surface of opening respectively has a front end be the impact cap of spherical crown surface, and the central point of spherical crown surface is the center of percussion of pendulum;
Described slam fixture comprises clamp bottom board, moving jaw, moving jaw bearing, regular jaw and regular jaw bearing; Wherein clamp bottom board is fixedly mounted on the base of described impact testing machine; Described moving jaw bearing and regular jaw bearing are fixedly mounted on clamp bottom board; The top of moving jaw bearing is plane, and boss is arranged at the top of regular jaw bearing; Pressing plate and the hold-down bolt of fixed installation spot-welding sample are arranged respectively at the top of described moving jaw and regular jaw; Moving jaw is seated in the plane of described moving jaw holder top, can along this planar slide, the lateral length of moving jaw is greater than the spacing of described two impact cap, two sides of moving jaw are inclined-plane, correspondingly with inclined-plane be provided with laser displacement sensor, the laser beam that laser displacement sensor sends is perpendicular to this inclined-plane of direction of motion directive of described pendulum; The width of regular jaw is less than the width between described pendulum head both arms, regular jaw offers rectangular opening, the boss of described regular jaw holder top and force cell mutually recline and are placed in this rectangular opening, and are tightened together by the boss of pretension bolt by regular jaw, force cell and regular jaw holder top;
What described control system controlled impact testing machine gets swinging mechanism and safety pin, to getting pendulum, put pendulum, release safety pin, release pendulum and secondary get pendulum and control, and also controls described data acquisition system (DAS) and data handling system carries out data acquisition and data processing simultaneously; Data acquisition system (DAS) is connected with laser displacement sensor with the force cell of described impact testing machine.
Use above-mentioned sheet metal tack-weld impact property proving installation to test the method for sheet metal tack-weld impact property, carry out according to the following steps:
1) get swinging mechanism and described pendulum is given rise to pendulum latched position, utilize safety pin to pin pendulum;
2) sheet metal spot-welding sample is arranged on slam fixture;
3) discharge safety pin, get the initial elevation position that pendulum is given rise to setting by swinging mechanism;
4) pendulum is discharged, when vertical position put by pendulum and the moving jaw of slam fixture collide, butt welding point joint applies tension impact load, solder joint is destroyed, after solder joint destroys fracture, moving jaw, the rear portion of spot-welding sample be connected with moving jaw, pressing plate and hold-down bolt are dished out;
In impact process, the impulsive force that data acquisition system (DAS) is subject to by force cell collection sample point soldered joint; The displacement of sample free end is gathered by laser displacement sensor; The angle (comprising pendulum initial elevation and maximum residual pivot angle) of pendulum is gathered by pivot angle index dial; Calculated by data handling system and provide characterize tack-weld impact property ultimate load, ultimate load displacement, ultimate load impact absorbing energy, always absorb merit, impact force-time curve, displacement-time curve, speed-time curve, force-displacement curve, impact absorbing energy-time curve, in order to evaluate the impact property of sheet metal tack-weld;
5) to be got swinging mechanism second lift after pendulum backswing to certain angle to pendulum latched position and locked, waited for lower Secondary Shocks.
More than test the method for sheet metal tack-weld impact property, its step 2) in sheet metal spot-welding sample be by two rectangular metal sheet " one " font overlap joint and the tensile shear sample made in the spot welding of overlapping regions central point; Or for being converted into the sheet metal of " L " shape, its minor face by two panels by the stretch release sample made spot-welded together.
Compared with prior art, advantage of the present utility model and beneficial effect are:
1, whole relevant parameters for evaluating and study sheet metal tack-weld impact property and curve can be obtained by the utility model apparatus and method.
2, the center of percussion of spherical crown surface central point as pendulum of impact cap on pendulum head is used, can ensure that Contact-impact is point cantact, greatly reduce the change at the Contact-impact position because of specimen size error or alignment error band, reduce the dispersiveness of test result, improve the accuracy of impact force measurements.
3, slam fixture structure is simple, and sample is easy for installation, and inertia force influence is little; Impact force measurements loop intermediate conversion and transmission link few, be conducive to improving the measuring accuracy of impulsive force.
4, laser displacement sensor adopts inclined-plane conversion method to measure sample impact displacement, and structure is simple, and displacement measurement is accurate, reliable.
Accompanying drawing explanation
Fig. 1 is the utility model apparatus structure functional block diagram;
Fig. 2 is the structural representation (not containing getting swinging mechanism) of the utility model device;
Fig. 3 is the structural upright schematic diagram of pendulum in Fig. 2;
Fig. 4 is the dimensional parameters schematic diagram of pendulum in Fig. 3;
Fig. 5 is the pivot angle parameter schematic diagram of pendulum in Fig. 3;
Fig. 6 is the structural upright schematic diagram of slam fixture in Fig. 2;
Fig. 7 is the exploded view of regular jaw and regular jaw bearing part in Fig. 6;
Fig. 8 (a) is tensile shear sample schematic diagram, and Fig. 8 (b) is stretch release sample schematic diagram;
Fig. 9 is the principle schematic measuring spot-welding sample free end travel;
Figure 10 is spot-welding sample strain measurement schematic diagram;
The various curves that Figure 11 obtains for utilizing the utility model device to test sheet metal spot-welding sample, wherein Figure 11 (a) is shock load-time curve, Figure 11 (b) is speed-time curve, Figure 11 (c) is displacement-time curve, Figure 11 (d) is shock load-displacement curve, and Figure 11 (e) is for absorbing merit-time curve;
Figure 12 is the shock load-time curve comparison diagram adopting force cell and strainmeter to record.
In figure: 1-base, 2-column, 3-pivot angle index dial, 4-safety pin, 5-pendulum, 51-turning set, 52-fork, 53-pendulum head, 54-impact cap, 55-balancing weight, 56-side plate, 6-slam fixture, 61-regular jaw, 62-moving jaw, 63-pressing plate, 64-hold-down bolt, 65-regular jaw bearing, 66-moving jaw bearing, 67-clamp bottom board, 68-pretension bolt, 601-boss, 602-rectangular opening, 603-laser beam, the direction of motion of 604-pendulum, 7-spot-welding sample, 71-sheet metal, 72-tack-weld, 73-mounting hole, 8-balance staff, 9-laser displacement sensor, 10-force cell, 11-foil gauge.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Composition graphs 1 and Fig. 2, the utility model sheet metal tack-weld impact property proving installation comprises impact testing machine, slam fixture 6, control system, data acquisition system (DAS) and data handling system.Wherein impact testing machine by base 1, column 2, balance staff 8, pendulum 5, pivot angle index dial 3, get swinging mechanism and safety pin 4 forms.Described column 2 is fixedly mounted on base 1, and pivot angle index dial 3 is arranged on the upper end of column 2, and the swinging mechanism (not shown) of getting be made up of servomotor and clutch coupling is arranged on column top, and the safety pin 4 of locking pendulum is arranged on the middle part of column.As Fig. 3, shown in Fig. 4 and Fig. 5, pendulum 5 is made up of fork 52 and the pendulum head 53 being arranged on fork lower end, the upper end of fork is socketed (pendulum can rotate centered by balance staff) by turning set 51 and the balance staff 8 being arranged on column 2 upper end, described pendulum head 53 is " U " shape, balancing weight 55 is arranged respectively at the bottom forming the biside plate 56 of " U " shape, biside plate has horn opening, the Shang You front end, bottom surface of opening is the impact cap 54 of spherical crown surface, the central point O2 of spherical crown surface is the center of percussion of pendulum, be lp with the distance of balance staff 8, the barycenter O1 of pendulum is positioned at the lower end of fork center line, be l with the distance of balance staff 8
c.
The slam fixture 6 installing spot-welding sample as shown in Figure 6 and Figure 7, is made up of clamp bottom board 67, moving jaw 62, moving jaw bearing 66, regular jaw 61 and regular jaw bearing 65.Wherein clamp bottom board 67 is fixedly mounted on the base 1 of impact testing machine; Moving jaw bearing 66 and regular jaw bearing 65 are fixedly mounted on clamp bottom board 67; The top of moving jaw bearing 66 is plane, and boss 601 is arranged at the top of regular jaw bearing 65; Pressing plate 63 and the hold-down bolt 64 of fixed installation spot-welding sample 7 are arranged respectively at the top of described moving jaw 62 and regular jaw 61; Moving jaw 62 is seated in the plane at moving jaw bearing 66 top, can along this planar slide, and the lateral length of moving jaw 62 is greater than the spacing of described two impact cap 54,
Two sides of moving jaw are inclined-plane, and side and bob motion angular separation α are 45 °, at the sidepiece on inclined-plane, are provided with laser displacement sensor 9, and the laser beam 603 that laser displacement sensor sends is perpendicular to this inclined-plane of direction of motion 604 directive of described pendulum.Regular jaw 61 offers rectangular opening 602, boss 601 and the force cell 10 of described regular jaw holder top mutually recline, are placed in rectangular opening, and regular jaw 61, force cell 10 and boss 601 are tightened together by pretension bolt 68.
As shown in Figure 1, the control system of device controls to get swinging mechanism and safety pin (genus routine techniques), pendulum is got to impact testing machine, puts pendulum, release safety pin, release pendulum and automatic secondary get the functions such as pendulum and control, go back control data acquisition system and data handling system simultaneously, wherein data acquisition system (DAS) is connected with laser displacement sensor 9 with the force cell 10 of described impact testing machine respectively, and the data gathered by it calculate through data handling system and provide the various parameter and curve that characterize tack-weld impact property.
The tack-weld sample utilizing above-mentioned impact testing machine and slam fixture to carry out the test of sheet metal tack-weld impact property can be tensile shear sample, also can be stretch release sample.Tensile shear sample is as shown in Fig. 8 (a), overlapped by two rectangular metal sheet 71 " " fonts and form, tack-weld 72 is formed by resistance spot welding process in overlapping regions central spot, two metal sheets is connected and makes spot-welding sample, get out at the two ends of sample for its mounting hole 73 be fixedly connected with regular jaw with the moving jaw of slam fixture.Stretch release sample, as shown in Fig. 8 (b), the sheet metal being converted into " L " shape by two forms, and in the minor face central spot spot welding of " L " shape sheet metal, forms tack-weld, is linked together by two metal sheets.
The present embodiment is the impact property using above-mentioned sheet metal tack-weld impact property proving installation test tensile shear sample point soldered joint as Suo Shi Fig. 8 (a), the steps include:
First, by control system, get swinging mechanism and pendulum is given rise to pendulum latched position, utilize safety pin to pin pendulum.
Then, the pressing plate on slam fixture moving jaw and regular jaw and hold-down bolt is utilized to be arranged on slam fixture by spot-welding sample.
Then, release safety pin, gets the initial elevation θ that pendulum is given rise to setting by swinging mechanism
1position, record initial elevation θ
1.
Then pendulum is discharged, when vertical position put by pendulum and the moving jaw of slam fixture collide, butt welding point joint applies tension impact load, solder joint is destroyed, after solder joint destroys fracture, moving jaw, the rear portion of spot-welding sample be connected with moving jaw, pressing plate and hold-down bolt are dished out, and pendulum continues pendulum to maximum residual pivot angle θ simultaneously
2, record maximum residual pivot angle θ
2.
After pendulum backswing to certain angle, locking by getting swinging mechanism second lift to pendulum latched position, waiting for lower Secondary Shocks.
In impact process, the impulsive force F that data acquisition system (DAS) is subject to by force cell automatic collection point soldered joint, gathers the displacement x of spot-welding sample free end automatically by laser displacement sensor; The angle of the pendulum of pivot angle index dial record (is comprised pendulum initial elevation θ
1with maximum residual pivot angle θ
2) artificial input data's acquisition system; Calculated by data handling system and provide the parameter and curve that characterize tack-weld impact property, comprise ultimate load, ultimate load displacement, ultimate load absorption merit, always absorb merit, impact force-time curve, speed-time curve, displacement-time curve, force-displacement curve, impact absorbing energy-time curve, in order to evaluate the impact property of sheet metal tack-weld.
Composition graphs 9, data acquisition system (DAS) measures the displacement x of spot-welding sample free end by the following method by laser displacement sensor 9:
If when in impact process, moving jaw and spot-welding sample free end are x (moving jaw moves to Fig. 9 dotted line position) along bob motion direction 604 displacement, laser beam 603 length variations between the inclined-plane of laser displacement sensor 9 and moving jaw 62 is y, then meet between x, y and α:
y＝x×tanα(1)
Be 45 ° by the present embodiment α, then x and y is equal.Therefore, according to the y value that laser sensor is measured, the displacement x value of spot-welding sample free end can be obtained.
Tack-weld destroys the pendulum initial elevation θ always absorbing merit (total impact energy) and can measure according to pivot angle index dial
1with the maximum residual pivot angle θ after impact
2, and the quality m of pendulum, barycenter O1 distance l
c, calculate by formula (2):
W＝mgl
c(cosθ
2-cosθ
1)-W
s(2)
Wherein, W
sfor the energy because of friction, windage equal loss.
The angular velocity omega of the impact start time that the impulsive force F measured according to force cell and pendulum initial elevation calculate
0, the linear velocity v of sample free end in impact process is calculated by formula (3)
t(this speed is also the speed of moving jaw and center of percussion),
Wherein, I
0for pendulum is relative to the moment of inertia of balance staff, l
pfor center of percussion O2 is apart from the distance of balance staff;
Tack-weld destroys the impulsive force F always absorbing merit (total impact energy) and also can measure according to force cell, calculates by formula (4)
The displacement x of the impulsive force F that tack-weld destruction total absorption merit can also be measured according to force cell and displacement sensor, is combined into force-displacement curve, calculates by formula (5):
Total absorption merit that above-mentioned three kinds of methods calculate can contrast mutually, the accuracy of checking, assessment test result (impulsive force, free end travel, impact absorbing energy) and reliability.
Figure 11 shows that the various curves obtained through data processing.The wherein impact force-time curve measured for force cell of Figure 11 (a); Figure 11 (b) is the impulsive force utilizing force cell to measure, according to the speed-time curve that formula (2) calculates; Figure 11 (c) utilizes the speed-time curve calculated, according to the displacement-time curve that formula (6) calculates; Figure 11 (d) is the force-displacement curve by impacting force-time curve and displacement-time curve merging formation; Figure 11 (e) is absorption merit-time curve force-displacement curve being carried out to integral and calculating by formula (5).
For assessing accuracy and the reliability of the impulsive force that the measurement of the utility model force cell obtains, as shown in Figure 10, the present embodiment adopts foil gauge 11 to measure the elastic strain ε of the spot-welding sample sheet metal linked together with regular jaw.The sectional area S of elastic strain ε, sheet metal, the elastic modulus E of sheet material and suffered impulsive force F meet formula (7)
F＝E×ε×S(7)
Namely elastic strain measured by utilization can calculate the impulsive force suffered by tack-weld, the impulsive force that this impulsive force and force cell record contrasted, curve relatively can find out that the impulsive force adopting the utility model force cell to record is accurately and reliably as shown in Figure 12.
Utilize proving installation of the present utility model to test with the spot-welding sample of method to the different electric current welding of 8-13kA, table 1 gives the contrast of test result.Wherein, total impact absorbing energy utilizes the impulsive force of actual measurement and the pivot angle of actual measurement to calculate respectively, meanwhile, utilizes the pendulum maximum residual pivot angle of actual measurement impact force's calculation also to contrast with actual measurement pivot angle.As follows according to the method for impact force's calculation pendulum maximum residual pivot angle: to utilize formula (3) to calculate the linear velocity v of tack-weld fracture moment pendulum center of percussion
d, right back-pushed-type (8) calculates maximum residual pivot angle.
Table 1: tack-weld impact property test result contrasts
As can be seen from Table 1, total no matter be impact absorbing energy, or pendulum maximum pendulum angle, its variation tendency with spot welding current is realistic rule, and result of calculation and measured result meet better, and error is within 10%.Above-mentioned test result contrast shows, the utility model method of testing is rational, and data processing method is correct, and proving installation is reliable, and test result meets tack-weld impact property test request.
Claims (1)
1. a sheet metal tack-weld impact property proving installation, comprises impact testing machine, slam fixture (6), control system, data acquisition system (DAS) and data handling system; Described impact testing machine by base (1), column (2), balance staff (8), pendulum (5), pivot angle index dial (3), get swinging mechanism and safety pin (4) forms; Described column (2) is fixedly mounted on base (1), described pivot angle index dial (3) and get the upper end that swinging mechanism is arranged on column (2), and safety pin (4) is arranged on the middle part of column; Wherein get swinging mechanism to be made up of servomotor and clutch coupling; Described pendulum (5) is made up of fork (52) and the pendulum head (53) that is arranged on fork lower end, the upper end of fork is arranged on the balance staff (8) of column (2) upper end by turning set (51), described pendulum head (53) is " U " shape, its biside plate (56) respectively has a balancing weight (55); It is characterized in that:
The biside plate of described pendulum head has horn opening respectively, and the bottom surface of opening respectively has a front end be the impact cap of spherical crown surface (54), the central point of spherical crown surface is the center of percussion of pendulum;
Described slam fixture (6) comprises clamp bottom board (67), moving jaw (62), moving jaw bearing (66), regular jaw (61) and regular jaw bearing (65); Wherein clamp bottom board (67) is fixedly mounted on the base (1) of described impact testing machine; Described moving jaw bearing (66) and regular jaw bearing (65) are fixedly mounted on clamp bottom board (67); The top of moving jaw bearing (66) is plane, and boss (601) is arranged at the top of regular jaw bearing (65); Pressing plate (63) and the hold-down bolt (64) of fixed installation spot-welding sample (7) are arranged respectively at the top of described moving jaw (62) and regular jaw (61); Moving jaw (62) is seated in the plane at described moving jaw bearing (66) top, can along this planar slide, the lateral length of moving jaw (62) is greater than the spacing of described two impact cap (54), two sides of moving jaw are inclined-plane, correspondingly with inclined-plane be provided with laser displacement sensor (9), the laser beam (603) that laser displacement sensor sends is perpendicular to this inclined-plane of direction of motion (604) directive of described pendulum; The width of regular jaw (61) is less than the width between described pendulum head both arms, regular jaw (61) offers rectangular opening (602), boss (601) and the force cell (10) of described regular jaw holder top mutually recline and are placed in this rectangular opening (602), and are tightened together by the boss (601) of pretension bolt (68) by regular jaw (61), force cell (10) and regular jaw holder top;
What described control system controlled impact testing machine gets swinging mechanism and safety pin, to getting pendulum, put pendulum, release safety pin, release pendulum and secondary get pendulum and control, and also controls described data acquisition system (DAS) and data handling system carries out data acquisition and data processing simultaneously; Data acquisition system (DAS) is connected with laser displacement sensor (9) with the force cell (10) of described impact testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212997.7U CN204556212U (en) | 2015-04-08 | 2015-04-08 | A kind of sheet metal tack-weld impact property proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212997.7U CN204556212U (en) | 2015-04-08 | 2015-04-08 | A kind of sheet metal tack-weld impact property proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204556212U true CN204556212U (en) | 2015-08-12 |
Family
ID=53831307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520212997.7U Withdrawn - After Issue CN204556212U (en) | 2015-04-08 | 2015-04-08 | A kind of sheet metal tack-weld impact property proving installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204556212U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN105571935A (en) * | 2016-02-05 | 2016-05-11 | 清华大学 | Pendulum bob type water-rock coupling test power loading equipment and method |
| CN106370530A (en) * | 2016-10-14 | 2017-02-01 | 内蒙古农业大学 | Straw crushing property testing device and testing method thereof |
| CN107655821A (en) * | 2017-11-14 | 2018-02-02 | 苏州市职业大学 | Change the frequency modulation bascule of free damping frequency in a kind of low frequency mechanical spectrometer |
| CN108037000A (en) * | 2017-12-19 | 2018-05-15 | 何德学 | A kind of mechanical strength testing device |
| CN108051287A (en) * | 2017-12-18 | 2018-05-18 | 东北大学 | The high frequency gas of fiber-reinforced composite thin-wall member swashs and high speed impact experimental rig |
| CN108204927A (en) * | 2018-02-28 | 2018-06-26 | 华南理工大学 | A kind of pendulum-type impact instrument and test method for being used to test road cementitious matter cohesive force |
| CN109490098A (en) * | 2018-12-14 | 2019-03-19 | 中国航空工业集团公司西安飞机设计研究所 | A kind of method that wing body connector test improves test accuracy |
| CN110567824A (en) * | 2019-09-16 | 2019-12-13 | 温州跨界环保科技有限公司 | Device capable of fixedly measuring impact toughness of iron hammer |
| US10746641B2 (en) | 2017-03-24 | 2020-08-18 | Honda Motor Co., Ltd. | Peel bending moment calculation |
| CN112986025A (en) * | 2021-02-07 | 2021-06-18 | 深圳市港嘉工程检测有限公司 | Pendulum impact test equipment |
| CN113008703A (en) * | 2021-04-26 | 2021-06-22 | 重庆派斯克刀具制造股份有限公司 | Blade welding strength detection device |
-
2015
- 2015-04-08 CN CN201520212997.7U patent/CN204556212U/en not_active Withdrawn - After Issue
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN105571935A (en) * | 2016-02-05 | 2016-05-11 | 清华大学 | Pendulum bob type water-rock coupling test power loading equipment and method |
| CN106370530A (en) * | 2016-10-14 | 2017-02-01 | 内蒙古农业大学 | Straw crushing property testing device and testing method thereof |
| CN106370530B (en) * | 2016-10-14 | 2020-04-17 | 内蒙古农业大学 | Straw crushing characteristic test device and method thereof |
| US10746641B2 (en) | 2017-03-24 | 2020-08-18 | Honda Motor Co., Ltd. | Peel bending moment calculation |
| CN107655821A (en) * | 2017-11-14 | 2018-02-02 | 苏州市职业大学 | Change the frequency modulation bascule of free damping frequency in a kind of low frequency mechanical spectrometer |
| CN107655821B (en) * | 2017-11-14 | 2024-06-04 | 苏州市职业大学 | Frequency modulation balancing device for changing free attenuation frequency on low-frequency mechanical spectrometer |
| CN108051287A (en) * | 2017-12-18 | 2018-05-18 | 东北大学 | The high frequency gas of fiber-reinforced composite thin-wall member swashs and high speed impact experimental rig |
| CN108037000A (en) * | 2017-12-19 | 2018-05-15 | 何德学 | A kind of mechanical strength testing device |
| CN108204927B (en) * | 2018-02-28 | 2024-02-20 | 华南理工大学 | Pendulum type impact instrument for testing binding force of cementing material for road and testing method |
| CN108204927A (en) * | 2018-02-28 | 2018-06-26 | 华南理工大学 | A kind of pendulum-type impact instrument and test method for being used to test road cementitious matter cohesive force |
| CN109490098A (en) * | 2018-12-14 | 2019-03-19 | 中国航空工业集团公司西安飞机设计研究所 | A kind of method that wing body connector test improves test accuracy |
| CN110567824B (en) * | 2019-09-16 | 2021-12-14 | 浙江柏盛包装科技有限公司 | Device capable of fixedly measuring impact toughness of iron hammer |
| CN110567824A (en) * | 2019-09-16 | 2019-12-13 | 温州跨界环保科技有限公司 | Device capable of fixedly measuring impact toughness of iron hammer |
| CN112986025A (en) * | 2021-02-07 | 2021-06-18 | 深圳市港嘉工程检测有限公司 | Pendulum impact test equipment |
| CN113008703A (en) * | 2021-04-26 | 2021-06-22 | 重庆派斯克刀具制造股份有限公司 | Blade welding strength detection device |
| CN113008703B (en) * | 2021-04-26 | 2024-01-16 | 重庆派斯克刀具制造股份有限公司 | Blade welding strength detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204556212U (en) | A kind of sheet metal tack-weld impact property proving installation | |
| CN104897357A (en) | Metal sheet spot-welding joint impact performance test device and method | |
| CN109752242B (en) | Compression shear test device | |
| KR20120110532A (en) | Jig apparatus for tensile test of spot welding sample | |
| CN104390601B (en) | Car body deformation detector based on laser transmission | |
| CN116242722A (en) | Hydro-cylinder impact load simulation test platform | |
| CN106404534B (en) | Existing structure concrete fatigue overstrain test method based on deformation modulus | |
| CN111965049A (en) | Device and method for testing shearing performance of honeycomb structure in tensile loading mode | |
| Barkey et al. | Testing of spot welded coupons in combined tension and shear | |
| CN107609279A (en) | A kind of T-shaped welding point impact strength design criteria acquisition methods | |
| CN109104908B (en) | Guided missile buffer static pressure test apparatus | |
| KR101337954B1 (en) | Method and apparatus for measuring extensity of metallic meterial | |
| Nilsson et al. | Fatigue-strength assessment of laser welds in corrugated core steel sandwich panels | |
| Xu et al. | Application of split Hopkinson tension bar technique to the study of dynamic fracture properties of materials | |
| CN201311343Y (en) | Adjustable concentrated force loading device for vehicle body-in-white performance test | |
| CN206945430U (en) | A kind of universal hydraulic testing machine | |
| CN206496740U (en) | A kind of civil engineering pavement flatness checking device | |
| CN102200501A (en) | On-site measuring apparatus for local mechanical properties of materials | |
| CN102507341B (en) | Shearing strength test device of sheet metal convex platforms | |
| Korgesaar et al. | Influence of material non-linearity on load carrying mechanism and strain path in stiffened panel | |
| CN205066720U (en) | Bead -on -plate weld thickness detection device | |
| CN212989066U (en) | Detection apparatus for fastener for building engineering | |
| CN217786144U (en) | Tool for detecting coaxiality degree of steel bar welding part | |
| CN217901440U (en) | Shearing tool for parts with lattice structure melted in selective laser areas | |
| CN205138702U (en) | Car selects force transducer that shifts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20170707 |