CN105067455A - Test device for acquiring plate thermoforming limit diagram - Google Patents
Test device for acquiring plate thermoforming limit diagram Download PDFInfo
- Publication number
- CN105067455A CN105067455A CN201510479130.2A CN201510479130A CN105067455A CN 105067455 A CN105067455 A CN 105067455A CN 201510479130 A CN201510479130 A CN 201510479130A CN 105067455 A CN105067455 A CN 105067455A
- Authority
- CN
- China
- Prior art keywords
- sheet material
- punch
- mould
- die base
- limiting
- 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.)
- Pending
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a test device for acquiring a plate thermoforming limit diagram. The device includes a universal tester, a mould, a strain measurement analysis apparatus, a heating control apparatus and a heat insulation apparatus. The universal tester includes a middle beam and a force sensor connected to the middle beam. The heating control apparatus consists of a temperature control unit and a heating component and a temperature sensing component that are respectively connected to the temperature control unit. The mould comprises a female die base, a blank-holding die and a male die. The female die base and the blank-holding die are assembled through a blank holding force control apparatus to form a plate clamping part for clamping plates. The strain measurement analysis apparatus consists of a controller, a metal corrosion marking unit and a CCD image sensor. The test device provided by the invention has a simplified overall structure, through combination of the universal tester, the mould, the strain measurement analysis apparatus, the heating control apparatus and the heat insulation apparatus, realizes precise control of the plate blank holding process and stamping forming process, and accurately acquires the plate thermoforming limit diagram.
Description
Technical field
The present invention relates to metal sheet hot press molding equipment technical field, especially, relate to a kind of proving installation obtaining sheet material thermoforming limiting figure.
Background technology
Metal sheet hot process for stamping and forming, on the basis of mechanical property of guaranteeing material excellence, effectively can reduce energy consumption and reduce environmental pollution, realizing lightweight and produce.But because the requirement of modern society to production efficiency is more and more higher, Optimize the forming scheme technique, it is very important for determining that can material be shaped as qualified part.In forming technology, forming limit represents the maximum crystallized ability that metal blank can reach when carrying out Plastic Forming, therefore the forming limit of Measurement accuracy metal, to the performance making full use of material, reduce production cost, enhance productivity significant.
The accurate acquisition more complicated of plate thermoforming limiting figure, influence factor is numerous, and the research for FLD still exists a lot of problem, the strained speed of FLD, pressure-pad-force, and the research of the influence factors such as the judgement of ultimate limit state and loading temperature is still not mature enough.The thermoforming limit of today experiment, major part stops experiment by directly observing specimen broke or tightening, and determines forming limit, thisly may cause larger human error, even causes this test defective, need again test.
For the problem of above-mentioned each Study on influencing factors, the patent of application number 201310337979.7 refer to a kind of method and the proving installation thereof that obtain metallic high temperature warm forming Limit Surface figure, but the failure behavior of the testing method used to plate judges the standard that neither one is unified, and be, after test, shooting monitor strain is carried out to the sample tightened or break.And the patent of application number 201410076641.5 mentions a kind of method for building up of high strength steel plate thermoforming limiting figure, by in high-speed camera head on-line measurement experimentation any time surface of test piece stress become, and stop experiment by Real Time Observation specimen broke or deflation, cannot ensure that the instability status of each sample is all the same.
Summary of the invention
The object of the invention is to provide a kind of one-piece construction to simplify, control convenient and accurately can obtain the device of plate thermoforming limiting figure, specific as follows:
For achieving the above object, the invention provides a kind of proving installation obtaining sheet material thermoforming limiting figure, comprise universal testing machine, be arranged on described universal testing machine and for the mould, the strain measurement analytical equipment recording and calculate the parameter before and after sheet deformation that sheet material are carried out to flanging and drawing and carry out temperature controlled heating control apparatus and heat insulating device to described mould and sheet material;
Described universal testing machine comprises horizontally disposed work top, to be horizontally placed on directly over described work top and the central sill that can vertically move up and down and the force snesor be connected to below described central sill;
Described heating control apparatus comprises attemperating unit and the heater block be connected with described attemperating unit respectively and temperature sensing component;
Described mould comprise be arranged on described work top and have with upper end the container cavity of opening die base, to be arranged in directly over described die base and to be connected with described central sill with the edge mould of the through hole of setting corresponding with the opening part of described container cavity and upper end and the sheet material retaining part formed for clamping sheet material at described container cavity and the freely up and down movable punch of described through hole, can be carried out assembling in its lower end by kiss gating-feeder device between described die base and described edge mould; Described punch is vertically arranged and its lower surface is plane; Described die base, edge mould and punch are equipped with described heater block and described temperature sensing component;
Described heat insulating device comprises the insulation body of the U-shaped structural cavity body with an opening upwards and is arranged on the opening part of described U-shaped structural cavity body and the horizontally disposed thermal insulation board matched with its size, described thermal insulation board is provided with and matches in the middle part of described punch and the second through hole of the corresponding setting with described through hole, and the lower end of described die base, edge mould, punch, heater block and temperature sensing component are all located in U-shaped structural cavity body;
Described strain measurement analytical equipment comprises controller, for sheet material being carried out the metal erosion marking device of mark and being arranged on the ccd image sensor be connected in described container cavity and with described controller.
Preferred in above technical scheme, described punch comprises cylindrical body and cylindrical major axis from the bottom to top, described die base is I-shape construction, described through hole is a cylindrical hole vertically arranged, and the central axis deviation of described die base, edge mould and punch three is not more than 0.15mm.
Preferred in above technical scheme, described heater block is heating rod or fire-bar, and described temperature sensing component is thermopair; Described heating rod and described thermopair is respectively equipped with in the blind hole of described cylindrical body; All around described fire-bar on the outer wall of described die base and on the outer wall of described edge mould, and be equipped with described thermopair in the blind hole of both sidewalls.
Preferred in above technical scheme, described attemperating unit is temperature controller, and described heating rod, fire-bar and thermopair are all connected with described temperature controller by cable.
Preferred in above technical scheme, the nut that described kiss gating-feeder device is bolt and matches with described bolt.
Preferred in above technical scheme, the flanging pretightning force computing formula that described kiss gating-feeder device adopts is as follows:
Wherein K is pretightning force coefficient; The screw thread nominal diameter that D is, its unit is millimeter; F is flanging pretightning force, and its unit is thousand newton, and its scope is adjustable in 10-100 thousand newton; M is moment, and its unit is ox × rice.
In order to reach better technique effect, together with described punch is fixed by a pin to described central sill, and the position that both contact is provided with heat insulating member.
Preferred in above technical scheme, described heat insulating member is heat insulating mattress; The material of described insulation body is asbestos.
Preferred in above technical scheme, the parameter before and after described sheet deformation is the length of the initial diameter of grid circle and the major axis of grid circle and the length of minor axis on plate;
Described controller inside is provided with following adaptability to changes computing formula:
First principal strain power:
second principal strain power:
Wherein, e
1be the first principal strain power, e
2be the second principal strain power, d
1for being out of shape the long axis length of critical grid circle in rear measured sheet material, d
2for being out of shape the minor axis length of critical grid circle in rear measured sheet material, d
0for being out of shape the initial diameter of grid circle in front measured sheet material, wherein d
1, d
2, d
0unit be millimeter.
Preferred in above technical scheme, the material of described die base, edge mould and punch is the hot die steel that hardness is not less than 60HRC.
Apply technical scheme of the present invention, there is following beneficial effect:
(1) proving installation that the present invention obtains sheet material thermoforming limiting figure comprises universal testing machine, mould, strain measurement analytical equipment, heating control apparatus and heat insulating device, and one-piece construction is simplified, and takes up room little; The design of heating control apparatus and heat insulating device can realize carrying out temperature accurately to mould and sheet material and control; Vertically moved up and down by the punch in the central sill driven mold of force sensor and realize the drawing of sheet material, die base and edge mould is controlled by kiss gating-feeder device, realize the flanging of sheet material, can not cause breaking of sheet material, degree of accuracy is high; By the design of strain measurement analytical equipment, the parameter before and after sheet deformation is recorded and calculated.Namely the present invention is by several most combination of universal testing machine, mould, strain measurement analytical equipment, heating control apparatus and heat insulating device, realize controlling accurately sheet material flanging process and stamping process, thus overcome that the error that exists in prior art is large, the not first-class defect of sheet material forming result, accurately obtain plate thermoforming limiting figure.
(2) structure choice of convex mould of the present invention, die base, through hole is easy to process; Heater block adopts heating rod or fire-bar, and temperature sensing component adopts thermopair, and attemperating unit adopts temperature controller, and parts easily obtain and degree of accuracy is high; Set-up mode in punch, edge mould and die base of heater block and temperature sensing component and being connected with the mode of temperature controller by cable, install, dismounting and maintenance convenient, and temperature control is effective.
(3) nut that in the present invention, kiss gating-feeder device adopts bolt and matches with it, parts easily obtain, and during flanging, dynamics controls precisely; It adopts specific computing formula to calculate, and result consistance is high.
(4) together with convex mould of the present invention is fixed by a pin to central sill, easy installation and removal, and good stability; The position that punch contacts with central sill is provided with heat insulating member, and heat insulating member adopts heat insulating mattress, and parts easily obtain and good heat-insulation effect, can prevent from burning out because punch is overheated the force snesor that universal testing machine carries well, the serviceable life of extension fixture.
(5) parameter in the present invention before and after sheet deformation is the length of the initial diameter of grid circle and the major axis of grid circle and the length of minor axis on plate, by the adaptability to changes computing formula that controller inside is provided with, accurately automatically can calculate the size of corresponding adaptability to changes, thus obtain plate thermoforming limiting figure more accurately.
(6) in the present invention, the material of die base, edge mould and punch is the hot die steel that hardness is not less than 60HRC, long service life.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the one-piece construction schematic diagram of the proving installation of the acquisition sheet material thermoforming limiting figure of the preferred embodiment of the present invention 1;
Fig. 2 is broken section enlarged drawing in Fig. 1;
Fig. 3 is the one group of For The Forming Limit of Sheet Metals figure adopting the proving installation of embodiment 1 to obtain;
Wherein, 1, universal testing machine, 1.1, work top, 1.2, central sill, 1.3, force snesor, 2, mould, 2.1, die base, 2.11, container cavity, 2.2, edge mould, 2.21, through hole, 2.3, punch, 2.31, cylindrical body, 2.32, cylindrical major axis, 3, strain measurement analytical equipment, 3.1, controller, 3.2, metal erosion marking device, 3.3, ccd image sensor, 4, heating control apparatus, 4.1, attemperating unit, 4.2, heater block, 4.3, temperature sensing component, 5, heat insulating device, 5.1, insulation body, 5.11, U-shaped structural cavity body, 5.2, thermal insulation board, 6, kiss gating-feeder device, 6.1, bolt, 6.2, nut, 7, heat insulating member, 8, sheet material.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can limit according to claim and cover is implemented.
Embodiment 1:
See Fig. 1 to Fig. 2, a kind of proving installation obtaining sheet material thermoforming limiting figure, comprises universal testing machine 1, mould 2, strain measurement analytical equipment 3, heating control apparatus 4 and heat insulating device 5.
Described universal testing machine 1 comprises horizontally disposed work top 1.1, to be horizontally placed on directly over described work top 1.1 and the central sill 1.2 that can vertically move up and down and the force snesor 1.3 be connected to below described central sill 1.2.
Described heating control apparatus 4 comprises attemperating unit 4.1 and the heater block 4.2 be connected with described attemperating unit 4.1 respectively and temperature sensing component 4.3, described heater block 4.2 adopts heating rod or fire-bar, described temperature sensing component 4.3 adopts thermopair, described attemperating unit 4.1 adopts temperature controller, and described heating rod, fire-bar and thermopair are all connected with described temperature controller by cable.
Described mould 2 comprises the die base 2.1 be arranged on described work top 1.1, be positioned at edge mould 2.2 directly over described die base 2.1 and upper end to be connected with described central sill 1.2 by pin and the punch 2.3 vertically arranged (position that described punch 2.3 contacts with described central sill 1.2 is provided with heat insulating member 7, described heat insulating member 7 adopts heat insulating mattress, heat insulating mattress can prevent from burning out because punch is overheated the force snesor that universal testing machine carries well, the serviceable life of extension fixture), described die base 2.1 is provided with the container cavity 2.11 that upper end has opening, described edge mould 2.2 is provided with the through hole 2.21 with the corresponding setting of opening part of described container cavity 2.11, the size of punch 2.3 can be as the criterion with its lower end in described container cavity 2.11 and described through hole 2.21 in freely up and down activity, and described punch 2.3 comprises cylindrical body 2.31 and cylindrical major axis 2.32 from the bottom to top.The monnolithic case structure of described die base 2.1 is I-shape construction.The central axis deviation of described die base 2.1, edge mould 2.2 and punch 2.3 three is not more than 0.15mm, and the material of three is the hot die steel that hardness is not less than 60HRC.The lower surface of described punch 2.3 is plane.Described heating rod and described thermopair is respectively equipped with in the blind hole of described cylindrical body 2.31; All around described fire-bar on the outer wall of described die base 2.1 and on the outer wall of described edge mould 2.2, and be equipped with described thermopair in the blind hole of both sidewalls.Prevent sheet material cracking in process of the test, the side that described die base 2.1 contacts with edge mould 2.2 is provided with groove, is provided with bead in groove.
Carry out assembling the sheet material retaining part formed for clamping sheet material 8 between described die base 2.1 and described edge mould 2.2 by kiss gating-feeder device 6, the nut 6.2 that described kiss gating-feeder device 6 adopts bolt 6.1 and matches with described bolt 6.1, operates the pressure-pad-force controlled by torque spanner.The flanging pretightning force computing formula that described kiss gating-feeder device 6 adopts is as follows:
Wherein K is pretightning force coefficient; The screw thread nominal diameter that D is, its unit is millimeter; F is flanging pretightning force, and its unit is thousand newton, and its scope is adjustable in 10-100 thousand newton; M is moment, and its unit is ox × rice.
Described heat insulating device 5 comprises the U-shaped structural cavity body 5.11 with an opening upwards and material is the insulation body 5.1 of asbestos and is arranged on the opening part of described U-shaped structural cavity body 5.11 and the horizontally disposed thermal insulation board 5.2 matched with its size, described thermal insulation board 5.2 with the assembling mode of described punch 2.2 is: the middle part of described punch 2.2 is provided with the groove of annular, described thermal insulation board 5.2 has vertically cylindrical hole is set, described cylindrical hole is embedded in the sealing that described groove realizes between thermal insulation board and punch, described die base 2.1, edge mould 2.2, the lower end of punch 2.3, heater block 4.2 and temperature sensing component 4.3 are all located in U-shaped structural cavity body 5.11.Above-mentioned through hole 2.21 is a cylindrical hole vertically arranged.
Described strain measurement analytical equipment 3 comprises controller 3.1, for sheet material 8 being carried out the metal erosion marking device 3.2 of mark and being arranged in described container cavity 2.11 and the ccd image sensor 3.3 be connected with described controller 3.1, described ccd image sensor 3.3 is provided with resistant to elevated temperatures diaphragm.
Parameter before and after described sheet material 8 is out of shape is the length of the initial diameter of grid circle and the major axis of grid circle and the length of minor axis on plate;
Described controller 3.1 inside is provided with following adaptability to changes computing formula:
First principal strain:
second principal strain power:
Wherein, e
1be the first principal strain power, e
2be the second principal strain power, d
1for being out of shape the long axis length of critical grid circle in rear measured sheet material, d
2for being out of shape the minor axis length of critical grid circle in rear measured sheet material, d
0for being out of shape the initial diameter of grid circle in front measured sheet material, wherein d
1, d
2, d
0unit be millimeter.
The method using apparatus of the present invention to obtain sheet material thermoforming limiting figure specifically comprises the following steps:
The first step: adopt chemical corrosion method to carry out grid printing to the one side of sheet material 8, cylinder lattice are printed with metal erosion marking device 3.2, sheet material 8 is placed on the sheet material clamping position between die base 2.1 and edge mould 2.2, connected by kiss gating-feeder device 6 and fasten sheet material, flanging pretightning force is adjustable between 10-100kN;
Second step: be fixed on by mould 2 on the work top 1.1 of universal testing machine 1, is heated to predetermined temperature by heating control apparatus 4 by mould 2 and sheet material and remains unchanged, predetermined temperature between 25-500 DEG C, insulation 5-10min;
3rd step: then to specify punch speed to start experiment, punch speed is adjustable between 0.1-500mm/min, Real-time Collection punch load, experiment (specifically: drive punch 2.3 vertically to move by the central sill 1.2 of universal testing machine 1, being undertaken detecting the load of central sill 1.2 and the load of indirect detection punch by force snesor 1.3) is stopped when load drops to control load;
4th step: the process repeating the 3rd step, by the different distortion data of strain measurement analytical equipment 3 Real-time Collection sheet material, calculate the first principal strain after sheet deformation and the second principal strain, finally accordingly result carried out matching and obtain metal fever forming limit diagram, concrete fit approach is: with the second principal strain for horizontal ordinate, first principal strain is ordinate, sets up surface strain coordinate system; Grid ultimate strain value is projected in the surface strain coordinate system of foundation, they is connected into suitable curve and can obtain forming limit diagram.
Above-mentioned test by using the sheet material of different in width, thus obtains different strain pathses.Based on GB/T15825.4-2008, the length of sheet material elects 180mm as, width elects 20 respectively as, 40,60,80,100,120,140,160,180mm totally 9 kinds of width, for unilateral stretching strain regime in forming limit diagram to plane strain state, then to the scope of pair stretching strain state of grade.In order to prevent narrow limit rectangular plate being provided with the place cracking of drawbead, suggestion adopts the sheet material of the stairstepping that middle part is slightly narrow, two ends are slightly wide.For the sheet material of width 90-180mm, in order to prevent from fillet fracture, between sheet material and punch, usually add the good material of one deck plasticity as pad, carry out perforate in the middle of pad, the diameter in hole is about 30-40mm.
Adopt the proving installation of above-mentioned acquisition sheet material thermoforming limiting figure to test the 6061-T6 aluminum alloy plate materials that the thickness that southwestern Aluminum company limited provides is 1.5mm, sheet material has medium tenacity, good corrosion resistivity, toughness high.Print roundness mess with galvanic corrosion marking device, the diameter of roundness mess is 2.5mm, and the speed of process of the test convex mould is 3mm/min, and controlling pressure-pad-force by torque spanner is 50KN.The forming limit test under 25 DEG C, 200 DEG C, 300 DEG C forming temperatures has been carried out respectively according to above-mentioned experiment condition, test findings refers to Fig. 3, this test, by controlling the speed of punch and the size of pressure-pad-force, can obtain forming limit diagram accurately when changing the temperature of sheet material.By identical principle, any two parameters in the temperature determining the speed of punch, pressure-pad-force and sheet material, change residue parameter, all can obtain the differing formed limiting figure of sheet material, practical.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind obtains the proving installation of sheet material thermoforming limiting figure, it is characterized in that, comprise universal testing machine (1), to be arranged on described universal testing machine (1) upper and for the mould (2), the strain measurement analytical equipment (3) recording and calculate the parameter before and after sheet deformation that sheet material are carried out to flanging and drawing and carry out temperature controlled heating control apparatus (4) and heat insulating device (5) to described mould (2) and sheet material;
Described universal testing machine (1) comprises horizontally disposed work top (1.1), to be horizontally placed on directly over described work top (1.1) and the central sill (1.2) that can vertically move up and down and be connected to the force snesor (1.3) of described central sill (1.2) below;
Described heating control apparatus (4) comprises attemperating unit (4.1) and the heater block (4.2) be connected with described attemperating unit (4.1) respectively and temperature sensing component (4.3);
Described mould (2) comprises that to be arranged on described work top (1.1) upper and have the die base (2.1) of the container cavity (2.11) of opening with upper end, to be arranged in directly over described die base (2.1) and to be connected with described central sill (1.2) with the edge mould (2.2) of the through hole (2.21) of the corresponding setting of opening part with described container cavity (2.11) and upper end and its lower end can at described container cavity (2.11) and the freely up and down movable punch (2.3) of described through hole (2.21), carry out assembling by kiss gating-feeder device (6) the sheet material retaining part formed for clamping sheet material between described die base (2.1) and described edge mould (2.2), described punch (2.3) vertically arranges and its lower surface is plane, described die base (2.1), edge mould (2.2) and punch (2.3) are equipped with described heater block (4.2) and described temperature sensing component (4.3),
Described heat insulating device (5) comprises the insulation body (5.1) of the U-shaped structural cavity body (5.11) with an opening upwards and is arranged on the opening part of described U-shaped structural cavity body (5.11) and the horizontally disposed thermal insulation board (5.2) matched with its size, and the lower end of described die base (2.1), edge mould (2.2), punch (2.3), heater block (4.2) and temperature sensing component (4.3) are all located in U-shaped structural cavity body (5.11);
Described strain measurement analytical equipment (3) comprises controller (3.1), for sheet material being carried out the metal erosion marking device (3.2) of mark and being arranged in described container cavity (2.11) and the ccd image sensor (3.3) be connected with described controller (3.1).
2. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 1, it is characterized in that, described punch (2.3) comprises cylindrical body (2.31) and cylindrical major axis (2.32) from the bottom to top, described through hole (2.21) is a cylindrical hole vertically arranged, and the central axis deviation of described die base (2.1), edge mould (2.2) and punch (2.3) three is not more than 0.15mm.
3. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 2, is characterized in that, described heater block (4.2) is heating rod or fire-bar, and described temperature sensing component (4.3) is thermopair; Described heating rod and described thermopair is respectively equipped with in the blind hole of described cylindrical body (2.31); All around described fire-bar on the outer wall of described die base (2.1) and on the outer wall of described edge mould (2.2), and be equipped with described thermopair in the blind hole of both sidewalls.
4. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 3, it is characterized in that, described attemperating unit (4.1) is temperature controller, and described heating rod, fire-bar and thermopair are all connected with described temperature controller by cable.
5. the proving installation of the acquisition sheet material thermoforming limiting figure according to claim 1-4 any one, it is characterized in that, described kiss gating-feeder device (6) is bolt (6.1) and the nut (6.2) that matches with described bolt (6.1).
6. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 5, is characterized in that, the flanging pretightning force computing formula that described kiss gating-feeder device (6) adopts is as follows:
Wherein K is pretightning force coefficient; D is screw thread nominal diameter, and its unit is millimeter; F is flanging pretightning force, and its unit is thousand newton, and its scope is adjustable in 10-100 thousand newton; M is moment, and its unit is ox × rice.
7. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 5, it is characterized in that, together with described punch (2.3) is fixed by a pin to described central sill (1.2), and the position that both contact is provided with heat insulating member (7).
8. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 7, it is characterized in that, described heat insulating member (7) is heat insulating mattress; The material of described insulation body (5.1) is asbestos.
9. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 5, is characterized in that, the parameter before and after described sheet deformation is the length of the initial diameter of grid circle and the major axis of grid circle and the length of minor axis on plate;
Described controller (3.1) inside is provided with following adaptability to changes computing formula:
First principal strain power:
second principal strain power:
Wherein, ε
1be the first principal strain power, ε
2be the second principal strain power, d
1for being out of shape the long axis length of critical grid circle in rear measured sheet material, d
2for being out of shape the minor axis length of critical grid circle in rear measured sheet material, d
0for being out of shape the initial diameter of grid circle in front measured sheet material, wherein d
1, d
2, d
0unit be millimeter.
10. the proving installation of acquisition sheet material thermoforming limiting figure according to claim 5, it is characterized in that, the material of described die base (2.1), edge mould (2.2) and punch (2.3) is the hot die steel that hardness is not less than 60HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479130.2A CN105067455A (en) | 2015-08-07 | 2015-08-07 | Test device for acquiring plate thermoforming limit diagram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479130.2A CN105067455A (en) | 2015-08-07 | 2015-08-07 | Test device for acquiring plate thermoforming limit diagram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105067455A true CN105067455A (en) | 2015-11-18 |
Family
ID=54496879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510479130.2A Pending CN105067455A (en) | 2015-08-07 | 2015-08-07 | Test device for acquiring plate thermoforming limit diagram |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105067455A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855351A (en) * | 2016-04-01 | 2016-08-17 | 湖南大学 | Metal plate high-speed forming limit experiment device |
| CN106018129A (en) * | 2016-05-16 | 2016-10-12 | 湖南大学 | Evaluation method for hot stamping fracture property of automobile part |
| CN106198179A (en) * | 2016-08-01 | 2016-12-07 | 湖南大学 | A kind of assay device measuring complex diversion systen lower thin sheet forming limit and method |
| CN106198245A (en) * | 2016-07-06 | 2016-12-07 | 湖南大学 | Test method and the method for building up in hot forming crinkling limit face based on the method |
| CN106769544A (en) * | 2016-11-30 | 2017-05-31 | 湘潭大学 | A kind of sheet metal electromagnetism warm drives forming limit test device and forming limit diagram method for building up |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
| CN109708952A (en) * | 2019-01-14 | 2019-05-03 | 山东建筑大学 | A kind of high speed impact forming limit test equipment and method |
| CN109975105A (en) * | 2019-03-29 | 2019-07-05 | 北京航空航天大学 | A kind of plate thickness detected automatically is to resistance of deformation test mould |
| CN110308048A (en) * | 2019-07-17 | 2019-10-08 | 哈尔滨工业大学 | A kind of the magnetorheological fluid bulging test device and test method of sheet material forming performance |
| CN113619177A (en) * | 2021-07-07 | 2021-11-09 | 浙江明恩新材料科技有限公司 | Production equipment for high-temperature-resistant modified material product |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070070441A (en) * | 2005-12-29 | 2007-07-04 | 주식회사 포스코 | Method for evaluating galling and continous formability of steel sheet |
| CN102156080A (en) * | 2011-04-02 | 2011-08-17 | 山东建筑大学 | Testing device and testing method for establishing high-temperature formed limit diagram of ultrahigh-strength boron steel plate |
| CN103398909A (en) * | 2013-08-05 | 2013-11-20 | 大连理工大学 | Method for acquiring metal temperature forming limit diagram (TFLD) and testing device therefor |
| CN103424315A (en) * | 2013-08-05 | 2013-12-04 | 大连理工大学 | Experimental facility for measurement of hot forming limit of laser tailor-welded blank |
| CN103852388A (en) * | 2014-03-04 | 2014-06-11 | 湖南大学 | Thermal forming limit experimental device for metal sheet and testing method |
| US20140190276A1 (en) * | 2013-01-07 | 2014-07-10 | National Chiao Tung University | Testing system and method of metal sheet |
| CN104729928A (en) * | 2015-03-31 | 2015-06-24 | 吉林大学 | Testing device and testing method for forming limit diagram under high-temperature constant-strain rate condition |
-
2015
- 2015-08-07 CN CN201510479130.2A patent/CN105067455A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070070441A (en) * | 2005-12-29 | 2007-07-04 | 주식회사 포스코 | Method for evaluating galling and continous formability of steel sheet |
| CN102156080A (en) * | 2011-04-02 | 2011-08-17 | 山东建筑大学 | Testing device and testing method for establishing high-temperature formed limit diagram of ultrahigh-strength boron steel plate |
| US20140190276A1 (en) * | 2013-01-07 | 2014-07-10 | National Chiao Tung University | Testing system and method of metal sheet |
| CN103398909A (en) * | 2013-08-05 | 2013-11-20 | 大连理工大学 | Method for acquiring metal temperature forming limit diagram (TFLD) and testing device therefor |
| CN103424315A (en) * | 2013-08-05 | 2013-12-04 | 大连理工大学 | Experimental facility for measurement of hot forming limit of laser tailor-welded blank |
| CN103852388A (en) * | 2014-03-04 | 2014-06-11 | 湖南大学 | Thermal forming limit experimental device for metal sheet and testing method |
| CN104729928A (en) * | 2015-03-31 | 2015-06-24 | 吉林大学 | Testing device and testing method for forming limit diagram under high-temperature constant-strain rate condition |
Non-Patent Citations (1)
| Title |
|---|
| 曹宏深等: "《GB/T 15825.8—2008 金属薄板成形性能与试验方法 第8部分：成形极限图(FLD)测定指南》", 23 December 2008 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855351A (en) * | 2016-04-01 | 2016-08-17 | 湖南大学 | Metal plate high-speed forming limit experiment device |
| CN106018129A (en) * | 2016-05-16 | 2016-10-12 | 湖南大学 | Evaluation method for hot stamping fracture property of automobile part |
| CN106018129B (en) * | 2016-05-16 | 2019-09-17 | 湖南大学 | A kind of evaluation method of auto parts and components drop stamping rupture performance |
| CN106198245A (en) * | 2016-07-06 | 2016-12-07 | 湖南大学 | Test method and the method for building up in hot forming crinkling limit face based on the method |
| CN106198245B (en) * | 2016-07-06 | 2019-05-10 | 湖南大学 | The method for building up in test method and the hot forming crinkling limit face based on this method |
| CN106198179A (en) * | 2016-08-01 | 2016-12-07 | 湖南大学 | A kind of assay device measuring complex diversion systen lower thin sheet forming limit and method |
| CN106769544B (en) * | 2016-11-30 | 2019-04-19 | 湘潭大学 | A kind of sheet metal electromagnetism warm driving forming limit test device and forming limit diagram method for building up |
| CN106769544A (en) * | 2016-11-30 | 2017-05-31 | 湘潭大学 | A kind of sheet metal electromagnetism warm drives forming limit test device and forming limit diagram method for building up |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
| CN109708952A (en) * | 2019-01-14 | 2019-05-03 | 山东建筑大学 | A kind of high speed impact forming limit test equipment and method |
| CN109975105A (en) * | 2019-03-29 | 2019-07-05 | 北京航空航天大学 | A kind of plate thickness detected automatically is to resistance of deformation test mould |
| CN110308048A (en) * | 2019-07-17 | 2019-10-08 | 哈尔滨工业大学 | A kind of the magnetorheological fluid bulging test device and test method of sheet material forming performance |
| CN113619177A (en) * | 2021-07-07 | 2021-11-09 | 浙江明恩新材料科技有限公司 | Production equipment for high-temperature-resistant modified material product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105067455A (en) | Test device for acquiring plate thermoforming limit diagram | |
| CN103900911B (en) | A kind of energising hot tensile test device and stretching test method | |
| CN102156080B (en) | Testing device and testing method for establishing high-temperature formed limit diagram of ultrahigh-strength boron steel plate | |
| JPWO2008140122A1 (en) | Thin plate press forming apparatus and press forming method | |
| CN102513440B (en) | Method and device for forming magnesium alloy formed parts with excellent high-temperature mechanical property | |
| CN109060552B (en) | Thermal environment resilience test equipment and test method | |
| CN105259048A (en) | Real-time detecting device and method applied to sheet three-point bending performance test | |
| CN113976683A (en) | High-strength steel plate warm bending forming device and method for online local contact heating | |
| CN106644700A (en) | Small sample fixture for creepage of plate high-temperature alloy | |
| CN108279177B (en) | High-temperature high-speed sheet metal hot stamping forming limit testing device and testing method | |
| JP2008264849A (en) | Method for detecting abnormality of press die device of thin plate | |
| CN209841571U (en) | Testing device for transient hot forming limit of metal plate | |
| CN108760430B (en) | Method for measuring thermoforming limit curve of titanium alloy plate | |
| US10166588B2 (en) | Apparatus for forming a steel workpiece | |
| CN213447223U (en) | High-rigidity platform for heat treatment of large thin-wall light alloy castings | |
| CN105333844A (en) | Online rapid measurement apparatus and method for detecting rivet point dimension | |
| CN108279175A (en) | A kind of experimental rig and method obtaining the intensity adjustable steel plate temperature-differential forming limit | |
| JP2009095877A (en) | Apparatus and method for press-forming sheet metal | |
| CN211426343U (en) | Testing arrangement of rubber high temperature expansion pressure | |
| CN108801801B (en) | A kind of measuring method of sheet alloy hot forming limit curve | |
| CN207908286U (en) | A kind of experimental rig obtaining the intensity adjustable steel plate temperature-differential forming limit | |
| CN109321721B (en) | Normalizing processing method and hoisting tool for flat-bottom end socket | |
| CN114653783B (en) | Stamping forming method | |
| CN206258308U (en) | Fluid temperature control cupping testing machine | |
| Choi et al. | Evaluation and prediction of the forming limit of AZ31B magnesium alloy sheets in a cross-shaped cup deep drawing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
|
| RJ01 | Rejection of invention patent application after publication |