CN201229281Y - Sheet metal impacting and stretching device - Google Patents
Sheet metal impacting and stretching device Download PDFInfo
- Publication number
- CN201229281Y CN201229281Y CNU2008201511610U CN200820151161U CN201229281Y CN 201229281 Y CN201229281 Y CN 201229281Y CN U2008201511610 U CNU2008201511610 U CN U2008201511610U CN 200820151161 U CN200820151161 U CN 200820151161U CN 201229281 Y CN201229281 Y CN 201229281Y
- Authority
- CN
- China
- Prior art keywords
- sample
- hold
- location division
- down support
- top board
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a sheet metal impacting and stretching device, which comprises a sample holding component and samples, wherein the sample holding component comprises a fixed support which comprises a positioning part and a free end, the samples are arranged on the fixed support, the positioning part is fixed with the first end portion of the samples, the sample holding component also comprises a movable impact baffle block which is arranged on the free end of the fixed support and comprises a positioning part, a lateral wing is extended from the positioning part laterally, the positioning part is fixed with the second end portion of the samples, the sample holding component also comprises a pair of upper clamp plates, one upper clamp plate is fixedly connected with the first end portion of the samples and the positioning part of the fixed support, and the other upper clamp plate is fixedly connected with the second end portion of the samples and the positioning part of the movable impact baffle block. The utility model has the advantages that the device has the characteristic of stable clamping, the defects of easy sliding or deformed pin holes of an original holding system are avoided, a foil gauge which is pasted on an elastic deformation zone guarantees the magnitude reliability of testing results, and a dynamic loading system is more flexible.
Description
Technical field
The utility model relates to a kind of metal material mechanics performance testing device, particularly a kind of sheet metal tensile impact device.
Background technology
In the prior art, tension test is intensity and the plastic property that is used for obtaining material, thereby instructs the research and development and the use of new material, new technology.Yet the tension test of carrying out based on standards such as GB/T228 " metal material tensile test at room temperature method " IS0, the DIN equivalent with it, ASTM both at home and abroad belongs to the loading strain rate and is lower than 10
-1The quasi-static test method of/s is not enough to exosyndrome material at high strain rate, as the material response characteristic of impacting, colliding or exploding instantaneous.
On the other hand, be that the AHSS plate (AHSS) and the process for machining and manufacturing thereof of representative occupied critical role in vehicle body design with dual phase steel, TRIP steel, become the selection trend of passenger car lightweight development.Because this type of steel grade constitutes the main body of skeleton structure, therefore in the actual environment for use, particularly the material response under the driving conditions has directly determined the security performance of passenger car.High strain rate loads even impact load testing machine and method so set up, and is most important with use for the research and development of high added value AHSS steel plate.
At present, at material dynamic performance evaluation and relevant dynamic loading test technology thereof, there is no standard prevailing for the time being in force both at home and abroad.Hydraulic High-speed cupping machine and elastic pressure bar method become the comparatively popular testing program of two classes, and the elastic pressure bar method produces according to stress wave that to be divided into " piece-bar " again with the mechanism of transmitting be to be two branches with " bar-bar ".
Hydraulic High-speed cupping machine complex structure is purchased the operating cost costliness, still can't carry out test in improved strain speed level because machinery cooperates with the restriction of oil sources compensation, as 10
3More than/s level reaches.In addition, testing machine still is the bottleneck of its technology popularization to the synchronous acquisition of load, displacement signal under the high speed loading environment.The depression bar testing program is by transmitting the dynamic response characteristic that " incident wave ", " reflection wave " and " transmitted wave " Spectrum Analysis of being produced obtain material between the bar bar to elastic wave.This method test condition is succinct and can obtain higher loading speed, yet the spectrum unscrambling algorithm of very complicated and magnitude tracing have restricted industrialized popularizing.
In conjunction with the advantage of testing machine method and depression bar method, the testing program of a series of modified forms is open in succession.
Chinese patent publication number 02252726.5 " a kind of tensile shock tester " discloses a kind of test unit that utilizes Charpy impact machine tester soft ductile materials such as plastics to be carried out tensile impact.Can directly obtain the disrumpent feelings energy of stretching of sample by the pivot angle of hammerhead jib before and after the determination test, and measure the sample fracture length growth rate.This utility model adopts an end regular jaw clamping sample when disclosing the enforcement tensile impact simultaneously, other end moving jaw connect sample and can knock by testing machine U-shaped pendulum after fly out, sample is applied tensile impact load.Because its method of clamping that adopts is mechanical engagement formula static friction contact clamping, and is effective to soft ductility low-intensity material.At high tensile metal sheet materials such as AHSS, when the deficiency of the jaw mechanical engagement amount of being pressed into obviously can increase tensile impact, the phenomenon that clamping is skidded.What is more important to the measurement of sample load signal, is not enough to the response characteristic of quantitative evaluation sheet metal dynamic load when this technology relates to impact tension test.
" bar-bar " that Chinese patent publication number 01232902.9 " a kind of high rate of strain impact tensile test apparatus " discloses a kind of separate type is the dynamic loading test method, as " sacrifice and import bar " the incident elastic wave is carried out waveform modulated by a metal quarter butt is set before incident bar, overcome the limitation that traditional depression bar technology elastic wave mechanism is difficult for adjusting.Yet on know-why, this technology still belongs to typical depression bar test method, exists inevitably by foil gauge to measure elastic wave and rely on Spectrum Analysis to obtain the needed magnitude tracing expense of this measurement approach of test findings.
Summary of the invention
The purpose of this utility model provides a kind of sheet metal tensile impact device, has clamping characteristics stably, has fundamentally eliminated employing mechanical engagement formula method of clamping and has been easy to skid, and adopted the phenomenon of drawing pin formula method of clamping to be easy to take place the pin-and-hole distortion.In addition, paste the record that foil gauge can be realized elastic stress wave in the impact stretching loading procedure, guaranteed the value reliability of test findings by the zone of the elastic deformation between a two stage steps.By the initial elevation angle that changes hammerhead jib and the length that designs the parallel position of sample, can obtain to load strain rate accordingly, make dynamic loading system have stronger dirigibility.
The technical solution of the utility model: a kind of sheet metal tensile impact device, comprise sample holder assembly and sample, described sample holder assembly comprises:
One hold-down support comprises a location division and a free end, and described sample places on this hold-down support, and the first end of location division and sample is fixed;
The one movable block that impacts places on the free end of hold-down support, and it comprises a location division, and the location division lateral spread goes out flank, and the second end of location division and sample is fixed;
A pair of top board, wherein a top board is fixedlyed connected with the first end of sample and the location division of hold-down support, and another top board is fixedlyed connected with the second end and the movable location division of impacting block of sample.
Preferably, described sample two ends are loading portion, and central authorities are measurement section for test portion between loading portion and the test portion; The other lateral spread of described loading section is corresponding with the movable flank that impacts block, and and measurement section between form the both shoulders platform;
The other lateral spread of described loading section matches with hold-down support, and and measurement section between form the both shoulders platform;
Be a strip guide table between the location division of described hold-down support and the free end, the guide table position corresponding with the both shoulders platform of sample is provided with a bilateral power transmission wall that upwards extends; The measurement section of sample one end is embedded between the bilateral power transmission wall, and the both shoulders platform of this end matches with bilateral power transmission wall;
The position corresponding with the both shoulders platform of sample is provided with a bilateral power transmission wall that upwards extends on the described movable impact block, and the measurement section of the sample other end is embedded between the bilateral power transmission wall, and the both shoulders platform of this end matches with bilateral power transmission wall; The movable stop bottom of impacting also has a slide-and-guide groove, and it cooperates slip with guide table.
Preferably, also comprise two foil gauges, be affixed on the upper and lower surface of sample respectively near the measurement section of hold-down support end; Hold-down support is provided with a metallic channel, and also is provided with a metallic channel on the top board that hold-down support cooperates, and the lead of described two foil gauges passes wherein respectively.
Preferably, also comprise a test pedestal, fixed bearing is rigidly connected with it.
Preferably, the width of described each parts of clamp assemblies is smaller or equal to the width of the flank of movable impact block (2).
Preferably free end highly equals the height of location division with movable combining of block of impact.
Preferably, wherein all having four concentric locating hole, threes that are complementary on the loading portion of a top board, sample one end, the hold-down support location division connects successively by clamp nut; The loading portion of another top board, the sample other end, the movable impact on the block location division all have four concentric locating holes that are complementary, and the three connects successively by clamp nut.
The utility model makes it compared with prior art owing to adopted above technical scheme, has the following advantages and good effect: have clamping characteristics stably, avoided original grasping system to skid easily or the defective of pin-and-hole distortion.The foil gauge that paste in the elastic deformation zone has guaranteed the value reliability of test findings.Dynamic loading system is more flexible.
Description of drawings
Fig. 1 is the Charpy impact machine tester loading principle figure that utilizes of the present utility model.
Fig. 2 is a U set hammer cover synoptic diagram of the present utility model.
Fig. 3 is a sample holder assembled synoptic diagram of the present utility model.
Fig. 4 is sample of the present utility model, hold-down support and the movable block assembling synoptic diagram that impacts.
Fig. 5 is a hold-down support front view of the present utility model.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the movable block front view that impacts of the present utility model.
Fig. 8 is the vertical view of Fig. 7.
Fig. 9 is the left view of Fig. 7.
Figure 10 is a top board front view of the present utility model.
Figure 11 is the vertical view of Figure 10.
Figure 12 is a tensile sample synoptic diagram of the present utility model.
Among the figure, 1 hold-down support, 2 movable block, 4 samples, 5 foil gauges of impacting, 6 test pedestals, 7U set hammer cover, 101 guide table, 102 bilateral power transmission walls, 103 pilot holes, 104 metallic channels, 105 location divisions, 201 slide-and-guide grooves, 202 bilateral power transmission walls, 203 pilot holes, 204 flanks, 205 location divisions, 30,31 top boards, 301 pilot holes, 302 metallic channels, 401 loading portions, 402 measurement section, 403 test portions, 404 pilot holes, 405 measurement section, 406 loading portions.
Embodiment
As Fig. 1, shown in 3,4, present embodiment comprises a sample holder assembly.It comprises a hold-down support 1, one movable block 2 and a pair of top board 30,31 of impacting, and is used for fixing sample 4.
As Fig. 5, shown in 6, hold-down support 1 comprises a strip guide table 101 and a location division 105, have four pilot holes 103 on the location division 105, junction between guide table 101 and the location division 105 is provided with a bilateral power transmission wall 102 that stretches upwards, the measurement section 402 of sample 4 one ends embeds wherein, also is provided with a metallic channel 104 on the hold-down support 1.
As Fig. 7, shown in 8,9, the movable block 2 that impacts comprises a bilateral power transmission wall 202 and a location division 205, and flank 204 is extended in its 205 both sides, location division.The measurement section 402 of sample 4 other ends embeds in the bilateral power transmission wall 202, has four pilot holes 203 on the location division 205.Movable block 2 bottoms of impacting also are provided with a slide-and-guide groove 201, movable block 2 is stably placed on the guide table 101 of fixed bearing 1 and can be free to slide when no sample state.
As Figure 10, shown in 11, this also is provided with a metallic channel 302 to respectively having on the top board 30,31 on four pilot holes 301 and the top board 30.
Four pilot holes of the loading portion 401 of top board 30, hold-down support location division 105, sample 4 one ends, all connect by clamp nut.Another top board 31, the movable equal clamp nut of four pilot holes that impacts the loading portion 401 of block location division 205, sample 4 other ends connect.Can realize accurate location like this, the method for clamping that is beneficial to the shoulder form fit carries out loading transfer.
The tabular tensile sample 4 of the double step of present embodiment (both shoulders portion) as shown in figure 12, its first order step is a loading portion 401,406, mode by form fit is impacted bilateral power transmission wall 202 on the link stopper 2 via activity, and the bilateral power transmission wall 102 on the fixed bearing 1 transmits the tensile impact load to specimen test position 403.Respectively be provided with four positioning and fixing holes 404 in the both sides loading portion 401,406 to guarantee the installation site of sample.
Second level step is a measurement section 402,405, under impact loading elastic deformation takes place.Respectively post a foil gauge 5 at sample near the upper and lower surface of the measurement section 402 of hold-down support 1 end, elastic deformation in the record tensile impact loading procedure, when sample 4 is fixed between top board 30 and the fixed bearing 1, the lead that links to each other with foil gauge 5 is drawn via metallic channel on the top board 30 302 and the metallic channel 104 on the fixed bearing 1, is connected with stress wave record analysis device.
The process of the test of present embodiment is as follows:
As Fig. 1,3, shown in 4, the tabular tensile sample 4 of double step (or both shoulders portion) impacts in block 2 and the hold-down support 1 in activity with the mode clamping of shoulder form fit, and sample 4 is fixing respectively with movable impact block 2 and fixed bearing 1 by top board 31,30 by clamp nut, movable impact block 2 places on the fixed bearing 1.Fixed bearing 1 is rigidly connected by the mode of mechanical connection and the test pedestal 6 of Charpy impact machine tester.
During test, the U-shaped of testing machine pendulum end hammer cover 7 (Fig. 2) slip over fixed bearing 1, sample 4 successively, and are stopped by the flank 204 of movable impact block 2.Plastic yield and disrumpent feelings takes place in sample 4 parallel positions under the qualification effect of the traction of block 2 and fixed bearing 1, block 2 flies out in company with the sample movable end, sample 4 posts foil gauge 5 respectively near the both sides up and down of the measuring point of stiff end, can write down the signal of elastic stress wave in the tensile impact process, and be connected with stress wave record analysis device by drawing lead.
Except that the flank 204 of movable impact block 2, the width dimensions of whole grasping system is crossed fixed bearing 1 and sample 4 but make U-shaped hammer cover 7 free skating when discharging into shape, and is stopped by the flank 204 of movable impact block 2 less than the width spacing of U-shaped hammer cover 7.When the testing machine pendulum freely hung, U-shaped hammer cover 7 touched just with the flank 204 of block 2.
Be noted that above enumerate only for a specific embodiment of the present utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art all should belong to protection domain of the present utility model from all distortion that the disclosed content of the utility model directly derives or associates.
Claims (5)
1. a sheet metal tensile impact device comprises sample holder assembly and sample (4), it is characterized in that:
Described sample holder assembly comprises:
One hold-down support (1) comprises a location division (105) and a free end, and described sample (4) places on this hold-down support (1), and location division (105) are fixed with the first end of sample (4);
The one movable block (2) that impacts places on the free end of hold-down support (1), and it comprises a location division (205), and location division (205) lateral spread goes out flank (204), and location division (205) are fixed with the second end of sample (4);
A pair of top board (30,31), top board (30) is fixedlyed connected with the first end of sample (4) and the location division (205) of hold-down support (1), and top board (31) is fixedlyed connected with the second end and the movable location division (205) of impacting block (2) of sample (4).
2. sheet metal tensile impact device as claimed in claim 1 is characterized in that:
Described sample (4) two ends are loading portion (401,406), and central authorities are measurement section (402,405) between loading portion (401,406) and the test portion (403) for test portion (403); Described loading portion (401) respectively lateral spread is corresponding with the movable flank (204) that impacts block (2), and and measurement section (402) between formation both shoulders platform;
Described loading portion (406) respectively lateral spread matches with hold-down support (1), and and measurement section (405) between formation both shoulders platform;
Be a strip guide table (101) between the location division (105) of described hold-down support (1) and the free end, guide table (101) position corresponding with the both shoulders platform of sample (4) is provided with a bilateral power transmission wall (102) that upwards extends; The measurement section (405) of sample (4) one ends is embedded between the bilateral power transmission wall (102), and the both shoulders platform of this end matches with bilateral power transmission wall (102);
The described movable block (2) that impacts upward is provided with a bilateral power transmission wall (202) that upwards extends in the position corresponding with the both shoulders platform of sample (4), the measurement section (402) of sample (4) other end is embedded between the bilateral power transmission wall (202), and the both shoulders platform of this end matches with bilateral power transmission wall (202); Movable block (2) bottom of impacting also has a slide-and-guide groove (201), and it cooperates slip with guide table (101).
3. as any described sheet metal tensile impact device in claim 1 or 2, it is characterized in that: also comprise two foil gauges (5), be affixed on the upper and lower surface of sample (4) respectively near the measurement section (402) of hold-down support (1) end; Hold-down support (1) is provided with a metallic channel (104), and also is provided with a metallic channel (302) on the top board (30) that hold-down support (1) cooperates, and the lead of described two foil gauges (5) passes wherein respectively.
4. sheet metal tensile impact device as claimed in claim 3 is characterized in that: also comprise a test pedestal (6), fixed bearing (1) is rigidly connected with it.
5. sheet metal tensile impact device as claimed in claim 4 is characterized in that: all have four concentric locating holes that are complementary (301,404,103) on the loading portion (406) of described top board (30), sample (4) one ends, hold-down support location division (105), the three connects successively by clamp nut; The loading portion (401) of another top board (31), sample (4) other end, the movable impact on the block location division (205) all have four concentric locating holes that are complementary, and the three connects successively by clamp nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201511610U CN201229281Y (en) | 2008-07-24 | 2008-07-24 | Sheet metal impacting and stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201511610U CN201229281Y (en) | 2008-07-24 | 2008-07-24 | Sheet metal impacting and stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229281Y true CN201229281Y (en) | 2009-04-29 |
Family
ID=40634224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201511610U Expired - Fee Related CN201229281Y (en) | 2008-07-24 | 2008-07-24 | Sheet metal impacting and stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229281Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750251B (en) * | 2009-12-30 | 2011-08-10 | 哈尔滨工业大学 | Method for testing high-temperature performance of metal sheet board |
| CN102507323A (en) * | 2011-11-15 | 2012-06-20 | 青岛云路新能源科技有限公司 | Method for detecting mechanical property of non-crystal strip material |
| TWI480548B (en) * | 2013-05-14 | 2015-04-11 | China Steel Corp | The structure and optimization method of the specimen - holding device, the test piece and the method of high - speed |
| CN109142096A (en) * | 2018-09-26 | 2019-01-04 | 邓根水 | Applied to hydrospace detection shipping steel intensity detecting device near polar loop |
| CN109187236A (en) * | 2018-07-27 | 2019-01-11 | 南京航空航天大学 | It is a kind of to apply the high speed impact experimental rig preloaded and method |
| CN111289321A (en) * | 2020-02-27 | 2020-06-16 | 北京首钢股份有限公司 | Preparation process of sheet metal tensile sample |
| CN111595700A (en) * | 2020-05-29 | 2020-08-28 | 鞍钢股份有限公司 | Impact test method of low-strength cold-rolled sheet material |
| CN112540013A (en) * | 2020-11-24 | 2021-03-23 | 西华大学 | Impact test device for rod-shaped anchoring assembly |
| WO2021120387A1 (en) * | 2019-12-20 | 2021-06-24 | 清华大学 | Material dynamic measurement method and axial vibration measurement system |
-
2008
- 2008-07-24 CN CNU2008201511610U patent/CN201229281Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750251B (en) * | 2009-12-30 | 2011-08-10 | 哈尔滨工业大学 | Method for testing high-temperature performance of metal sheet board |
| CN102507323A (en) * | 2011-11-15 | 2012-06-20 | 青岛云路新能源科技有限公司 | Method for detecting mechanical property of non-crystal strip material |
| TWI480548B (en) * | 2013-05-14 | 2015-04-11 | China Steel Corp | The structure and optimization method of the specimen - holding device, the test piece and the method of high - speed |
| CN109187236A (en) * | 2018-07-27 | 2019-01-11 | 南京航空航天大学 | It is a kind of to apply the high speed impact experimental rig preloaded and method |
| CN109142096A (en) * | 2018-09-26 | 2019-01-04 | 邓根水 | Applied to hydrospace detection shipping steel intensity detecting device near polar loop |
| CN109142096B (en) * | 2018-09-26 | 2021-01-15 | 邓根水 | Be applied to near marine exploration ship steel strength detection device of polar region circle |
| WO2021120387A1 (en) * | 2019-12-20 | 2021-06-24 | 清华大学 | Material dynamic measurement method and axial vibration measurement system |
| CN111289321A (en) * | 2020-02-27 | 2020-06-16 | 北京首钢股份有限公司 | Preparation process of sheet metal tensile sample |
| CN111595700A (en) * | 2020-05-29 | 2020-08-28 | 鞍钢股份有限公司 | Impact test method of low-strength cold-rolled sheet material |
| CN111595700B (en) * | 2020-05-29 | 2023-05-16 | 鞍钢股份有限公司 | Impact test method for low-strength cold-rolled sheet material |
| CN112540013A (en) * | 2020-11-24 | 2021-03-23 | 西华大学 | Impact test device for rod-shaped anchoring assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201229281Y (en) | Sheet metal impacting and stretching device | |
| CN106769546B (en) | A kind of test device and test method for simulating pipe explosion fracture apperance | |
| CN101655432B (en) | uniaxial tension and soil beam bending tester | |
| CN201795963U (en) | System for testing fracture of concrete | |
| CN205157406U (en) | Test material is batch processing anchor clamps and testing machine for adhesive strength | |
| CN101551293A (en) | Simulated collision test device and test method thereof | |
| CN108627388B (en) | Method for measuring instantaneous impact force | |
| CN203658169U (en) | Semicircle bending strength tester for bituminous mixture | |
| CN201331403Y (en) | Moment rigidity tester for hub bearing unit | |
| CN105784524A (en) | Rubber material mechanical property testing device | |
| CN110658056A (en) | Circular pipe fitting low-speed drop hammer impact test detection device and impact test instrument | |
| CN103592216B (en) | The stress-strain test instrument of a kind of sealing strip and spring and method of testing thereof | |
| CN201628619U (en) | Bumper beam local rigidity measuring device | |
| CN205317598U (en) | Case shot bag impact tester | |
| CN100565206C (en) | Determining apparatus for contraction coefficient of two-box road making materials | |
| CN204269475U (en) | Tensile Strength of Frozen Soil proving installation | |
| CN205580905U (en) | Rubber materials mechanical properties testing arrangement | |
| CN105136578B (en) | A kind of achievable drop impact tension test transfer beam device for eliminating inertia force influence | |
| CN205898561U (en) | A need checking sample clamping device for test material separates towards performance | |
| CN116046372A (en) | Mast loading fatigue test bed and method for rotary drilling rig | |
| CN206497657U (en) | A kind of engineering mechanics collision test device | |
| Lai et al. | An experimental method for characterizing friction properties of sheet metal under high contact pressure | |
| CN203287250U (en) | Tensile test device for sock-soil | |
| CN202793937U (en) | Measuring device for bending creep rate of large-deformation bituminous mixture | |
| CN104833580A (en) | Conveyor belt tearing strength testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20160724 |