CN105241752A - Sheet material forming limit diagram test device and method thereof - Google Patents
Sheet material forming limit diagram test device and method thereof Download PDFInfo
- Publication number
- CN105241752A CN105241752A CN201410504759.3A CN201410504759A CN105241752A CN 105241752 A CN105241752 A CN 105241752A CN 201410504759 A CN201410504759 A CN 201410504759A CN 105241752 A CN105241752 A CN 105241752A
- Authority
- CN
- China
- Prior art keywords
- wedged template
- template
- wedged
- vee gutter
- iii
- 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.)
- Granted
Links
Abstract
The invention relates to a sheet material forming limit diagram test device and a method thereof and belongs to the technical field of sheet forming test. The sheet material forming limit diagram test device and the method thereof can be used in a common tensile test machine to achieve test of the right half part of a sheet material forming limit diagram. The sheet material forming limit diagram test device is composed of a plurality groups of wedge-shaped dies having different wedge-shaped angles, wherein each group includes four wedge-shaped dies: an upper wedge-shaped die is disposed opposite to a lower wedge-shaped die up-and-down and a left wedge-shaped die is disposed opposite to a right wedge-shaped die left-and-right, wherein the upper wedge-shaped die and the lower wedge-shaped die are both matched with the left upper wedge-shaped die and the right upper wedge-shaped die in a mutually sliding manner. A test sample is cross-shaped, wherein four ends of the test sample are respectively fixed on the four wedge-shaped dies. During test, vertical relative movement of the upper wedge-shaped die and the lower wedge-shaped die drives left-and-right relative movement of the left wedge-shaped die and the right wedge-shaped die, thereby achieving deformation of bidirectional stress state of the test sample.
Description
Technical field
The present invention relates to and belong to plate shaping technical field of measurement and test.
Background technology
Sheet forming is ingredient important in material forming field, occupies very consequence in national economy.Plate is often in plane stress state in plate forming process, therefore generally adopts forming limit diagram to weigh stamping formability, and forming limit diagram is also the important evidence that plate forming technology is formulated and tool and mould of being correlated with designs.The forming limit diagram how obtaining plate is accurately an important research direction in plate molding field.
At present, For The Forming Limit of Sheet Metals figure mainly adopts the method for punching block bulging to obtain, as described in national standard " GB/T15825.8-2008 ".When adopting punching block expanding method test forming limit diagram, first the rectangular specimen processing the different length breadth ratio of preparation one group is needed, then certain method is adopted to etch grid at specimen surface, then ready sample is fixed between blank holder and die, and adopting semisphere punch to carry out bulging until specimen broke, the major and minor axis size finally measuring different sample Critical Cracking grid also converts and obtains forming limit diagram.
For punching block expanding method, the sheet material after experiment terminates becomes spherical, and this causes difficulty to the accurate test of subsequent meshes size, is unfavorable for obtaining forming limit diagram accurately.
Summary of the invention
The object of the invention is to solve in existing forming limit diagram right half part measuring technique, accurately cannot test the problem of Critical Cracking strain because sheet deformation is curved surface.
The technical scheme adopted for realizing the object of the invention is such, comprises the upper wedged template for installing test specimen to be measured, lower wedged template, left wedged template and right wedged template.
Described upper wedged template, lower wedged template, left wedged template and right wedged template are combined.
The lower surface of upper wedged template is plane, the upper surface of lower wedged template is plane.
Described upper wedged template each side have a working face, the angle of the lower surface of these two working faces and upper wedged template is α.
Described lower wedged template each side have a working face, the angle of the upper surface of these two working faces and lower wedged template is α.
Its right end face of described left wedged template has two triangular grooves.In these two triangular grooves, the trough wall surface of triangular groove above coordinates with a working face of upper wedged template, and the trough wall surface of triangular groove below coordinates with a working face of lower wedged template.
The left end face of described right wedged template has two triangular grooves.In these two triangular grooves, the trough wall surface of triangular groove above coordinates with a working face of upper wedged template, and the trough wall surface of triangular groove below coordinates with a working face of lower wedged template.
Described test specimen to be measured is " cross " shape, and its each branch is fixed on wedged template, lower wedged template, left wedged template and right wedged template respectively.
Described upper wedged template is connected stretching device with lower wedged template.
If it is acute angle that angle is α, respectively to upper and lower pull upper wedged template and lower wedged template time, left wedged template and right wedged template move respectively to the right and left.
If it is right angle that angle is α, respectively to upper and lower pull upper wedged template and lower wedged template time, left wedged template and right wedged template do not move.
More specifically, a kind of For The Forming Limit of Sheet Metals figure proving installation, comprises the upper wedged template for installing test specimen to be measured, lower wedged template, left wedged template and right wedged template.
Described upper wedged template is identical with lower wedge shape shape of template.Described left wedged template is identical with right wedged template shape.
The upper end of described upper wedged template is connection handle I, lower end is equicrural ladder plate I.Dip plane on the left of described equicrural ladder plate I is workplace I-I, the dip plane on right side is workplace I-II.Described connection handle I is connected with the stretching device I be positioned at above upper wedged template.
The lower end of described lower wedged template is connection handle II, upper end is equicrural ladder plate II.Dip plane on the left of described equicrural ladder plate II is workplace II-II, the dip plane on right side is workplace II-I.Described connection handle II is connected with the stretching device II be positioned at above lower wedged template.
The right side of described left wedged template has vee gutter III-I and vee gutter III-II.Entity part between described vee gutter III-I and vee gutter III-II is rectangular slab III.The dip plane of described vee gutter III-I upper end is workplace III-I.The dip plane of described vee gutter III-II lower end is workplace III-II.
The left side of described right wedged template has vee gutter IV-II and vee gutter IV-I.Entity part between described vee gutter IV-I and vee gutter IV-II is rectangular slab IV.The dip plane of described vee gutter IV-II upper end is workplace IV-II.The dip plane of described vee gutter IV-I lower end is workplace IV-I.
The below of described upper wedged template is lower wedged template.Described left wedged template is positioned at the left side of wedged template and lower wedged template.Described right wedged template is positioned at the right side of wedged template and lower wedged template.
The both sides of described equicrural ladder plate I embed in vee gutter III-I and vee gutter IV-II respectively, such that described slipping plane I-I contacts with slipping plane III-I, described slipping plane I-II contacts with slipping plane IV-II.
The both sides of described equicrural ladder plate II embed in vee gutter III-II and vee gutter IV-I respectively, such that described slipping plane II-II contacts with slipping plane III-II, described slipping plane II-I contacts with slipping plane IV-I.
Described test specimen to be measured is cruciform.Each branch of described test specimen to be measured is connected on wedged template, lower wedged template, left wedged template and right wedged template.
Further, the base angle of described equicrural ladder plate I and equicrural ladder plate II is α.The groove angle of described vee gutter III-I, vee gutter III-II, vee gutter IV-I and vee gutter IV-II is α.
Further, described upper wedged template, lower wedged template, left wedged template and right wedged template have connecting pin I, connecting pin II, connecting pin III and connecting pin IV respectively.
The present invention is claimed a kind of For The Forming Limit of Sheet Metals figure method of testing adopting said apparatus also.
Advantage of the present invention is:
1, realize being slidably matched respectively by lozenges (workplace) between each wedged template contacted.In experimentation, the relative motion up and down of upper wedge-shaped die and lower wedge-shaped die can impel the left and right relative motion of left wedge-shaped die and right wedge-shaped die, thus realize the distortion of " ten " shape sample under two-dimensional state of stress, and ensure that sample is always flat shape in experimentation, avoid traditional expanding method and cause the inaccurate problem of strain measurement because sample is curving.
2, configuration and principle of the present invention is relatively simple, can be applicable on common tensile testing machine, thus test obtains the right half part forming limit diagram of sheet material.
3, the present invention is not by the impact of sheet metal thickness change, can not change different moulds, be specially adapted to the test that thickness is 0.5mm ~ 3mm For The Forming Limit of Sheet Metals figure because of the sheet material of different-thickness.
4, the present invention can prepare the wedged template that many groups have different angles lozenges, completes the test of right half part forming limit diagram.
Accompanying drawing explanation
Fig. 1 is proving installation wedge-shaped die of the present invention assembling schematic diagram;
Fig. 2 is wedge-shaped die schematic diagram on proving installation of the present invention;
Fig. 3 is wedge-shaped die schematic diagram under proving installation of the present invention;
Fig. 4 is the left wedge-shaped die schematic diagram of proving installation of the present invention;
Fig. 5 is the right wedge-shaped die schematic diagram of proving installation of the present invention;
The sample schematic diagram that Fig. 6 adopts for proving installation test forming limit diagram of the present invention.
In figure:
Upper wedged template (1), connection handle I (101), equicrural ladder plate I (102), connecting pin I (103), workplace I-I (1021), workplace I-II (1022),
Lower wedged template (2), connection handle II (201), equicrural ladder plate II (202), connecting pin II (203), workplace II-I (2021), workplace II-II (2022),
Left wedged template (3), vee gutter III-I (301), vee gutter III-II (302), rectangular slab III (303), connecting pin III (304), workplace III-I (3021), workplace III-II (3022),
Right wedged template (4), vee gutter IV-I (401), vee gutter IV-II (402), rectangular slab IV (403), connecting pin IV (404), workplace IV-I (4021), workplace IV-II (4022),
Test specimen to be measured (5), connecting hole I (501), connecting hole II (502), connecting hole III (503), connecting hole IV (504).
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention and be only limitted to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacement and change, all should be included in protection scope of the present invention.
Embodiment 1:
A kind of For The Forming Limit of Sheet Metals figure proving installation, comprises the upper wedged template 1 for installing test specimen 5 to be measured, lower wedged template 2, left wedged template 3 and right wedged template 4.
See Fig. 1, described upper wedged template 1, lower wedged template 2, left wedged template 3 and right wedged template 4 are combined.
The lower surface of upper wedged template 1 is plane, the upper surface of lower wedged template 2 is plane.
Described upper wedged template 1 each side have a working face, the angle of the lower surface of these two working faces and upper wedged template 1 is α.
Described lower wedged template 2 each side have a working face, the angle of the upper surface of these two working faces and lower wedged template 2 is α.
Its right end face of described left wedged template 3 has two triangular grooves.These two triangular grooves (" V " shape groove) include two trough wall surfaces.In triangular groove, the trough wall surface of top coordinates with a working face of upper wedged template 1, and the trough wall surface of below coordinates with a working face of lower wedged template 2 (after each plank combines, face contacts).
The left end face of described right wedged template 4 has two triangular grooves.In these two triangular grooves, the trough wall surface of triangular groove above coordinates with a working face of upper wedged template 1, and the trough wall surface of triangular groove below coordinates with a working face of lower wedged template 2.
Described test specimen to be measured 5 is " cross " shape (just having four branches), and its each branch is fixed on wedged template 1, lower wedged template 2, left wedged template 3 and right wedged template 4 respectively.
Described upper wedged template 1 is connected stretching device with lower wedged template 2.When starting stretching device, upper wedged template 1 and lower wedged template 2 respectively to upper, move down, stretch described test specimen to be measured 5.
If it is acute angle that angle is α, respectively to upper and lower pull upper wedged template 1 and lower wedged template 2 time, left wedged template 3 and right wedged template 4 move respectively to the right and left.
If it is right angle that angle is α, respectively to upper and lower pull upper wedged template 1 and lower wedged template 2 time, left wedged template 3 and right wedged template 4 do not move.
Embodiment 2:
A kind of For The Forming Limit of Sheet Metals figure proving installation, comprises the upper wedged template 1 for installing test specimen 5 to be measured, lower wedged template 2, left wedged template 3 and right wedged template 4.
Described upper wedged template 1 is identical with lower wedged template 2 shape.Described left wedged template 3 is identical with right wedged template 4 shape.
Described upper wedged template 1, lower wedged template 2, left wedged template 3 are together with the split of right wedged template 4.
The both sides of described upper wedged template 1 coordinate with left wedged template 3 and right wedged template 4 respectively.The both sides of described lower wedged template 2 coordinate with left wedged template 3 and right wedged template 4 respectively.
Described test specimen to be measured 5 is " cross " shape, and its each branch is fixed on wedged template 1, lower wedged template 2, left wedged template 3 and right wedged template 4 respectively.
Described upper wedged template 1 is connected stretching device with lower wedged template 2.Namely go up wedged template 1 to be connected with the upper lower chuck of stretching device respectively with lower wedged template 2, when starting stretching device, upper wedged template 1 moves up, lower wedged template 2 moves down.
If the both sides of described upper wedged template 1 and left wedged template 3 and right wedged template 4 cooperation place are acute angle (the both sides wedge angle of upper wedged template 1 embeds in left wedged template 3 and right wedged template 4 respectively), and described lower wedged template 2 is acute angle (the both sides wedge angle of lower wedged template 2 embeds in left wedged template 3 and right wedged template 4 respectively) with left wedged template 3 and right wedged template 4 cooperation place.Respectively to upper and lower pull upper wedged template 1 and lower wedged template 2 time, left wedged template 3 and right wedged template 4 move respectively to the right and left.At this moment, four direction stretching test specimen 5 vertically and horizontally.
If the both sides of described upper wedged template 1 and left wedged template 3 and right wedged template 4 cooperation place are right angle, and described lower wedged template 2 is right angle with left wedged template 3 and right wedged template 4 cooperation place.Respectively to upper and lower pull upper wedged template 1 and lower wedged template 2 time, left wedged template 3 and right wedged template 4 do not move.At this moment, the test specimen of direction stretching up and down 5.
Embodiment 3:
A kind of For The Forming Limit of Sheet Metals figure proving installation, comprises the upper wedged template 1 for installing test specimen 5 to be measured, lower wedged template 2, left wedged template 3 and right wedged template 4.These masterplates are all the sheet metals with same thickness.Namely the shape of template alleged by the present embodiment is the shape in each piece of sheet metal plate face.
See Fig. 1, described upper wedged template 1 is identical with the size of lower wedged template 2 shape, each several part, and the two is put up and down symmetrically.Described left wedged template 3 is identical with the size of right wedged template 4 shape, each several part, and the two is symmetrically put.
The upper end of described upper wedged template 1 is connection handle I 101, lower end is equicrural ladder plate I 102, namely makes the shape of wedged template 1 be similar to " mountain " word of Chinese character.See Fig. 2, because isosceles trapezoid has two equal base angles waist equal with two, so described equicrural ladder plate I 102 left and right sides has the equal wedge angle of angle (namely corresponding to the base angle of isosceles trapezoid); Described equicrural ladder plate I 102 both sides have the equal workplace of length (namely corresponding to two waists of isosceles trapezoid).Workplace I-I 1021 on the left of described equicrural ladder plate I 102, the workplace I-II 1022 on right side.Described connection handle I 101 is connected with the stretching device I be positioned at above upper wedged template 1.In embodiment, stretching device I and stretching device II are the upper lower chucks of same drawing machine.
The lower end of described lower wedged template 2 is connection handles II 201, upper end is equicrural ladder plate II 202, namely makes the shape of hyposphene shape template 2 be similar to turn around " mountain " word of the Chinese character write.See Fig. 3, because isosceles trapezoid has two equal base angles waist equal with two, so described equicrural ladder plate II 202 left and right sides has the equal wedge angle of angle (namely corresponding to the base angle of isosceles trapezoid); Described equicrural ladder plate II 202 both sides have the equal workplace of length (namely corresponding to two waists of isosceles trapezoid).Workplace II-II 2022 on the left of described equicrural ladder plate II 202, the workplace II-I 2021 on right side.Described connection handle II 201 is connected with the stretching device II be positioned at above lower wedged template 2.
What deserves to be explained is, described connection handle I 101, equicrural ladder plate I 102, connecting pin I 103, workplace I-I 1021 and workplace I-II 1022 are all identical with the shape of connection handle II 201, equicrural ladder plate II 202, connecting pin II 203, workplace II-I 2021 and workplace II-II 2022, size respectively.
Described left wedged template 3 is the sheet metal of one piece of rectangle at first, and after processing, the right side of described left wedged template 3 has vee gutter III-I 301 and the vee gutter III-II 302 in two plate face through.Entity part between described vee gutter III-I 301 and vee gutter III-II 302 is rectangular slab III 303.So just the shape of left wedged template 3 is made to be similar to letter e.Vee gutter III-I 301 is positioned at above vee gutter III-II 302.The notch of vee gutter III-I 301 and vee gutter III-II 302 is all at the right flank of left wedged template 3, and bottom land angle is α.The surface of the lower end of vee gutter III-I 301 is surface level, the surface of upper end is dip plane, and this makes (cross section) shape of vee gutter III-I 301 be right-angle triangle.The dip plane of described vee gutter III-I 301 upper end is slipping plane III-I 3021.Similar, the surface of the lower end of described vee gutter III-II 302 is dip plane, the surface of upper end is surface level, and this makes (cross section) shape of vee gutter III-II 302 be right-angle triangle.The dip plane of described vee gutter III-II 302 lower end is slipping plane III-II 3022.
Described right wedged template 4 is the sheet metal of one piece of rectangle at first, and after processing, the left side of described right wedged template 4 has vee gutter IV-II 402 and the vee gutter IV-I 401 in two plate face through.Entity part between described vee gutter IV-I 401 and vee gutter IV-II 402 is rectangular slab IV 403.So just the shape of right wedged template 4 is made to be similar to letter e.Vee gutter IV-II 401 is positioned at below vee gutter IV-I 402.The notch of vee gutter IV-II 402 and vee gutter IV-I 401 is all at the left surface of right wedged template 4, and bottom land angle is α.
The surface of the lower end of vee gutter IV-II 402 is surface level, the surface of upper end is dip plane, and this makes (cross section) shape of vee gutter IV-II 402 be right-angle triangle.The dip plane of described vee gutter IV-II 402 upper end is slipping plane IV-II 4022.Similar, the surface of the lower end of described vee gutter IV-I 401 is dip plane, the surface of upper end is surface level, and this makes (cross section) shape of vee gutter IV-I 401 be right-angle triangle.The dip plane of described vee gutter IV-I 401 lower end is slipping plane IV-I 4021.
The below of described upper wedged template 1 is lower wedged template 2.Described left wedged template 3 is positioned at the left side of wedged template 1 and lower wedged template 2.Described right wedged template 4 is positioned at the right side of wedged template 1 and lower wedged template 2.
The both sides (wedge angle) of described equicrural ladder plate I 102 embed in vee gutter III-I 301 and vee gutter IV-II 402 respectively, such that described workplace I-I 1021 and workplace III-I 3021 are slidably matched, described workplace I-II 1022 is slidably matched with workplace IV-II 4022.Upwards stretching equicrural ladder plate I 102 time, left wedged template 3 and right wedged template 4 separate respectively to the left and right sides.
The both sides (wedge angle) of described equicrural ladder plate II 202 embed in vee gutter III-II 302 and vee gutter IV-I 401 respectively, such that described workplace II-II 2022 and workplace III-II 3022 are slidably matched, described workplace II-I 2021 is slidably matched with workplace IV-I 4021.During downward stretching equicrural ladder plate II 202, left wedged template 3 and right wedged template 4 separate respectively to the left and right sides.
Described test specimen to be measured 5 is cruciform.Four branches of described test specimen to be measured 5 are connected on wedged template 1, lower wedged template 2, left wedged template 3 and right wedged template 4.
Embodiment 4:
The present embodiment primary structure is with embodiment 1, conveniently fix test specimen 5, described upper wedged template 1, lower wedged template 2, left wedged template 3 and right wedged template 4 have connecting pin I 103, connecting pin II 203, connecting pin III 304 and connecting pin IV 404 respectively.Accordingly, four branches of described test specimen 5 to be measured are equipped with connecting hole I 501, connecting hole II 502, connecting hole III 503 and connecting hole IV 504 respectively, and connecting pin can embed in this some holes.
Embodiment 5:
In the present embodiment, have employed device disclosed in many cover embodiments 1,2 or 3, wherein, the base angle of described equicrural ladder plate I 102 and equicrural ladder plate II 202 is α.The groove angle of described vee gutter III-I 301, vee gutter III-II 302, vee gutter IV-I 401 and vee gutter IV-II 402 is α.α span is [20 °, 90 °].If when α span is less than 90 °, then this device is the device described in embodiment 2 or 3.
The present embodiment discloses a kind of For The Forming Limit of Sheet Metals figure method of testing based on embodiment 1 device, mainly comprises the following steps:
1) sheet material to be measured is processed as " ten " font sample as shown in Figure 6, and goes out pilot hole four end machining;
2) adopt chemical corrosion or additive method on sample, engrave the roundness mess of appropriate size so that experiment terminates rear monitor strain, or in experimentation real-time monitor strain;
3) select a set of proving installation, the angle parameter α of this device is known, such as 45 °.By step 1) with 2) institute's processing sample and one group of wedge-shaped die adopt the assembling mode shown in Fig. 1 to assemble, and be connected with cupping machine respectively with lower wedged template 2 by upper wedged template 1;
4) after experiment starts, upper wedged template 1 and lower wedged template 2 are driven by cupping machine, produce upper and lower relative motion, and impel left wedged template 3 and right wedged template 4 that the relative motion of left and right directions occurs, thus realize the distortion of sample 5 under two-dimensional state of stress.(or upper wedged template 1 produces upper and lower relative motion with lower wedged template 2, and left wedged template 3 is relative motionless with right wedged template 4, realizes the plane strain tension distortion of sample.) when sample cracking, stop experiment; Due to, all there is relative motion in each wedged template, curving distortion can not occur sample in same plane.
5) take off sample, measure the strain of Critical Cracking position, obtain a bit on forming limit diagram;
In embodiment, can step 3 be repeated)-5), in step 3) in select the proving installation of different angles parameter alpha, until draw the forming limit diagram of a complete right half part.
Embodiment result shows, proving installation of the present invention can ensure to realize under sample is the prerequisite of flat shape the distortion under two-dimensional state of stress, thus avoids the problem that traditional expanding method causes sample curving and the strain measurement that causes is inaccurate.Forming limit diagram proving installation structure of the present invention is simple, manufactures processing cost low and be simply easy to processing.Forming limit diagram proving installation applied range of the present invention, not by the restriction of sheet metal thickness, application result shows, for the sample of sheet metal thickness within 0.5mm ~ 3mm, result is best.
Claims (5)
1. a For The Forming Limit of Sheet Metals figure proving installation, is characterized in that: comprise for installing the upper wedged template (1) of test specimen to be measured (5), lower wedged template (2), left wedged template (3) and right wedged template (4);
Described upper wedged template (1), lower wedged template (2), left wedged template (3) and right wedged template (4) are combined;
The lower surface of upper wedged template (1) is plane, the upper surface of lower wedged template (2) is plane;
Described upper wedged template (1) each side have a working face, the angle of the lower surface of these two working faces and upper wedged template (1) is α;
Described lower wedged template (2) each side have a working face, the angle of the upper surface of these two working faces and lower wedged template (2) is α;
Its right end face of described left wedged template (3) has two triangular grooves; In these two triangular grooves, the trough wall surface of triangular groove above coordinates with a working face of upper wedged template (1), and the trough wall surface of triangular groove below coordinates with a working face of lower wedged template (2);
The left end face of described right wedged template (4) has two triangular grooves; In these two triangular grooves, the trough wall surface of triangular groove above coordinates with a working face of upper wedged template (1), and the trough wall surface of triangular groove below coordinates with a working face of lower wedged template (2);
Described test specimen to be measured (5) is " cross " shape, and its each branch is fixed on wedged template (1), lower wedged template (2), left wedged template (3) and right wedged template (4) respectively;
Described upper wedged template (1) is connected stretching device with lower wedged template (2);
If it is acute angle that angle is α, respectively to upper and lower pull upper wedged template (1) and lower wedged template (2) time, left wedged template (3) and right wedged template (4) move respectively to the right and left;
If it is right angle that angle is α, respectively to upper and lower pull upper wedged template (1) and lower wedged template (2) time, left wedged template (3) and right wedged template (4) do not move.
2. a For The Forming Limit of Sheet Metals figure proving installation, is characterized in that: comprise for installing the upper wedged template (1) of test specimen to be measured (5), lower wedged template (2), left wedged template (3) and right wedged template (4);
Described upper wedged template (1) is identical with lower wedged template (2) shape; Described left wedged template (3) is identical with right wedged template (4) shape;
The upper end of described upper wedged template (1) is connection handle I (101), lower end is equicrural ladder plate I (102); The dip plane in described equicrural ladder plate I (102) left side is workplace I-I (1021), the dip plane on right side is workplace I-II (1022); Described connection handle I (101) is connected with the stretching device I being positioned at upper wedged template (1) top;
The lower end of described lower wedged template (2) is connection handle II (201), upper end is equicrural ladder plate II (202); The dip plane in described equicrural ladder plate II (202) left side is workplace II-II (2022), the dip plane on right side is workplace II-I (2021); Described connection handle II (201) is connected with the stretching device II being positioned at lower wedged template (2) top;
The right side of described left wedged template (3) has vee gutter III-I (301) and vee gutter III-II (302); Entity part between described vee gutter III-I (301) and vee gutter III-II (302) is rectangular slab III (303); The dip plane of described vee gutter III-I (301) upper end is workplace III-I (3021); The dip plane of described vee gutter III-II (302) lower end is workplace III-II (3022);
The left side of described right wedged template (4) has vee gutter IV-II (402) and vee gutter IV-I (401); Entity part between described vee gutter IV-I (401) and vee gutter IV-II (402) is rectangular slab IV (403); The dip plane of described vee gutter IV-II (402) upper end is workplace IV-II (4022); The dip plane of described vee gutter IV-I (401) lower end is workplace IV-I (4021);
The below of described upper wedged template (1) is lower wedged template (2); Described left wedged template (3) is positioned at the left side of wedged template (1) and lower wedged template (2); Described right wedged template (4) is positioned at the right side of wedged template (1) and lower wedged template (2);
The both sides of described equicrural ladder plate I (102) embed in vee gutter III-I (301) and vee gutter IV-II (402) respectively, such that described slipping plane I-I (1021) contacts with slipping plane III-I (3021), described slipping plane I-II (1022) contacts with slipping plane IV-II (4022);
The both sides of described equicrural ladder plate II (202) embed in vee gutter III-II (302) and vee gutter IV-I (401) respectively, such that described slipping plane II-II (2022) contacts with slipping plane III-II (3022), described slipping plane II-I (2021) contacts with slipping plane IV-I (4021);
Described test specimen to be measured (5) is cruciform; Each branch of described test specimen to be measured (5) is connected on wedged template (1), lower wedged template (2), left wedged template (3) and right wedged template (4).
3. a kind of For The Forming Limit of Sheet Metals figure proving installation according to claim 1, is characterized in that: the base angle of described equicrural ladder plate I (102) and equicrural ladder plate II (202) is α; The groove angle of described vee gutter III-I (301), vee gutter III-II (302), vee gutter IV-I (401) and vee gutter IV-II (402) is α.
4. a kind of For The Forming Limit of Sheet Metals figure proving installation according to claim 1, is characterized in that: described upper wedged template (1), lower wedged template (2), left wedged template (3) and right wedged template (4) have respectively connecting pin I (103), connecting pin II (203), connecting pin III (304) and connecting pin IV (404).
5. one kind adopts the For The Forming Limit of Sheet Metals figure method of testing of device described in 1 ~ 3 arbitrary claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504759.3A CN105241752B (en) | 2014-09-26 | 2014-09-26 | A kind of Forming Limit of Sheet Metals figure test device and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504759.3A CN105241752B (en) | 2014-09-26 | 2014-09-26 | A kind of Forming Limit of Sheet Metals figure test device and its method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105241752A true CN105241752A (en) | 2016-01-13 |
| CN105241752B CN105241752B (en) | 2017-09-22 |
Family
ID=55039475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410504759.3A Active CN105241752B (en) | 2014-09-26 | 2014-09-26 | A kind of Forming Limit of Sheet Metals figure test device and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105241752B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758722A (en) * | 2016-02-26 | 2016-07-13 | 重庆大学 | Simple and stretching ratio adjustable type double-shaft synchronous stretching device and method |
| CN110658060A (en) * | 2019-09-06 | 2020-01-07 | 扬州大学 | System and method for observing evolution of tensile microscopic morphology of concrete fiber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1415124A1 (en) * | 1986-12-15 | 1988-08-07 | Ленинградский инженерно-строительный институт | Installation for two-axes tension of cross-shaped specimens made of composite materials |
| US5144844A (en) * | 1989-05-03 | 1992-09-08 | Innovationsgesellschaft Fur Fortgeschrittene Produktion-Ssysteme In Der Fahrzeugindustrie Mbh | Cruciform planar specimen for biaxial materials testing |
| CN102507320A (en) * | 2011-10-25 | 2012-06-20 | 华南理工大学 | Single-power two-way stretching method and device |
| CN102645371A (en) * | 2012-04-12 | 2012-08-22 | 北方工业大学 | Biaxial material tensile test device and method applying same |
| CN204255762U (en) * | 2014-09-26 | 2015-04-08 | 重庆大学 | A kind of For The Forming Limit of Sheet Metals figure proving installation |
-
2014
- 2014-09-26 CN CN201410504759.3A patent/CN105241752B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1415124A1 (en) * | 1986-12-15 | 1988-08-07 | Ленинградский инженерно-строительный институт | Installation for two-axes tension of cross-shaped specimens made of composite materials |
| US5144844A (en) * | 1989-05-03 | 1992-09-08 | Innovationsgesellschaft Fur Fortgeschrittene Produktion-Ssysteme In Der Fahrzeugindustrie Mbh | Cruciform planar specimen for biaxial materials testing |
| CN102507320A (en) * | 2011-10-25 | 2012-06-20 | 华南理工大学 | Single-power two-way stretching method and device |
| CN102645371A (en) * | 2012-04-12 | 2012-08-22 | 北方工业大学 | Biaxial material tensile test device and method applying same |
| CN204255762U (en) * | 2014-09-26 | 2015-04-08 | 重庆大学 | A kind of For The Forming Limit of Sheet Metals figure proving installation |
Non-Patent Citations (1)
| Title |
|---|
| 齐振杰: "基于双向拉伸试验的板材成形极限分析", 《CNKI优秀硕士学位论文全文库-工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758722A (en) * | 2016-02-26 | 2016-07-13 | 重庆大学 | Simple and stretching ratio adjustable type double-shaft synchronous stretching device and method |
| CN105758722B (en) * | 2016-02-26 | 2019-05-17 | 重庆大学 | A kind of easy, the adjustable Dual-shaft synchronous stretching device of stretch ratio and method |
| CN110658060A (en) * | 2019-09-06 | 2020-01-07 | 扬州大学 | System and method for observing evolution of tensile microscopic morphology of concrete fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105241752B (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106092778B (en) | The experimental rig and method of forming limit diagram under the conditions of a kind of acquisition complex loading | |
| CN102353598B (en) | Composite strain path forming test device | |
| CN204255762U (en) | A kind of For The Forming Limit of Sheet Metals figure proving installation | |
| CN103278445A (en) | Positive extrusion test method for plastic forming friction coefficient and friction factor | |
| CN105241752A (en) | Sheet material forming limit diagram test device and method thereof | |
| CN202427883U (en) | Riveting device of airplane parts | |
| CN204108579U (en) | Bending sheet metal component clamping tool in a kind of U-shaped | |
| CN205786139U (en) | A kind of obtain the assay device of forming limit diagram under the conditions of complex loading | |
| CN105414436B (en) | A kind of blade forging mold convenient for detection forging offsetting amount | |
| CN208283169U (en) | A kind of sheet coupon centralising device | |
| CN103324779A (en) | Determination method for plate incremental forming limit diagram | |
| CN101905457A (en) | Simple operation method for benchwork scribing of casting valve blank | |
| CN205482655U (en) | A slide caliper for measuring chamfer | |
| CN205279937U (en) | Measure measuring tool of coordinate figure | |
| CN113865954A (en) | Construction method of non-contact forming limit diagram | |
| CN204262139U (en) | A kind of support blanking units | |
| CN204036447U (en) | Line checkout gear | |
| CN203611239U (en) | Cylinder center hole site scribing tool | |
| CN203534899U (en) | Auxiliary device for improving measurement accuracy of Brinell hardness | |
| CN203929533U (en) | Automotive sheet FLC curve determination device based on DIC technology | |
| CN107621358A (en) | A kind of automobile exterior panel assembly crossbeam detects tool | |
| CN202101616U (en) | Checking fixture for crankshaft semicircular hole of cylinder block of internal combustion engine | |
| RU2013157078A (en) | METHOD FOR CONSTRUCTING AN OPTIMAL AERODYNAMIC SURFACE OF A HYPERSONIC AIRCRAFT | |
| CN204694212U (en) | Target ball seat is used in the inspection of a kind of composite material forming frock groove | |
| CN204523942U (en) | Rush slot die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |