CN104062183B - Sheet material forming rebound performance testing machine - Google Patents
Sheet material forming rebound performance testing machine Download PDFInfo
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- CN104062183B CN104062183B CN201410258267.0A CN201410258267A CN104062183B CN 104062183 B CN104062183 B CN 104062183B CN 201410258267 A CN201410258267 A CN 201410258267A CN 104062183 B CN104062183 B CN 104062183B
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Abstract
A kind of sheet material forming rebound performance testing machine, comprise the first oil cylinder be arranged on frame end face, be slidably mounted in frame and the crossbeam be connected with the first oil cylinder telescopic end, pre-bending mechanism, the worktable be arranged on frame bottom surface, round roller mechanism, the drawing mechanism being arranged in worktable both sides, the second oil cylinder be arranged on frame end face, the drift being arranged on the second oil cylinder telescopic end, blank holder and die, pre-bending mechanism is arranged on crossbeam by switchover frame, switchover frame is provided with through hole, and blank holder is arranged on switchover frame bottom surface; During binding draw rebound test, round roller mechanism installs on the table; During stretch bending rebound test, die is installed on the table.By adding the second oil cylinder of band drift on existing binding draw rebound test machine, and by switchover frame, pre-bending mechanism and blank holder are integrated, like this when doing two kinds of tests, only need alternately round roller mechanism and die be changed on the table, achieve dual-use, floor area is little and cost is low.
Description
Technical field
The present invention relates to plate property test field, refer to a kind of sheet material forming rebound performance testing machine particularly.
Background technology
Resilience refers in Sheet Metal Forming, after external applied load removal, due to the elastic recovery of elastic properties of materials crushed element in the elastic recovery of elastic deformation area's material and plastically deforming area, its net shape, size is made all to differ from the shape of design, the phenomenon of size.Resilience is the universal phenomenon existed in metal sheet forming process, has directly had influence on forming accuracy (dimensional accuracy and form accuracy) and the quality of part.
In recent years, in order to meet the requirements such as Modern Automobile Body lightweight, energy-efficient, high security, there is the high-strength steel sheet of the features such as high strength, high impact absorption energy and high fatigue resistance, be widely applied in the automotive industry.But high-strength steel sheet is high due to its yield strength, make in forming process, rebound phenomenon is more obvious, and resilience is problem the most serious during current high Strength Steel for Motor Vehicles is shaped, and has become the bottleneck problem of restriction high-strength steel development and application.Therefore, the rebound phenomenon of research automotive sheet particularly high-strength steel, sums up its producing cause and rule, and to the forming accuracy improving high-strength steel, and then it is significant to promote its application.
At present, general Form springback performance of being tested sheet material by binding draw rebound test and stretch bending rebound test, these two tests generally complete respectively on binding draw rebound test machine and stretch bending rebound test machine.Like this, there is following problem when reality uses:
Because binding draw rebound test and stretch bending rebound test must complete respectively on two testing machines, so the floor area of testing machine is large and cost is high.
Summary of the invention
The object of the invention is the deficiency existed to solve above-mentioned background technology, proposing the little and sheet material forming rebound performance testing machine that cost is low of a kind of floor area.
For achieving the above object, a kind of sheet material forming rebound performance testing machine designed by the present invention, comprise frame, be arranged on the first oil cylinder on described frame end face, be slidably mounted on the crossbeam be connected in described frame and with the telescopic end of described first oil cylinder, pre-bending mechanism, be arranged on the worktable on described frame bottom surface, round roller mechanism, be arranged in the drawing mechanism of described worktable both sides, be arranged on supercentral second oil cylinder of described frame end face, be arranged on the drift of the telescopic end of described second oil cylinder, the blank holder cooperatively interacted and die, described pre-bending mechanism is arranged on described crossbeam by switchover frame, described switchover frame is provided with the through hole that described drift can be allowed to pass, described blank holder is arranged on the position of the corresponding described drift in described switchover frame bottom surface, during binding draw rebound test, described round roller mechanism is arranged on the position of corresponding described drawing mechanism bare terminal end on described worktable, during stretch bending rebound test, described die is arranged on the position of corresponding described drift on described worktable.By adding the second oil cylinder of band drift on existing binding draw rebound test machine, and by switchover frame, pre-bending mechanism and blank holder are integrated, like this when doing binding draw rebound test and stretch bending rebound test, only alternately need change the round roller mechanism on worktable and die, achieve the object of dual-use, floor area is little and cost is low.
In such scheme, described switchover frame is arranged on the place of bottom center of described crossbeam, and described through hole to be vertically arranged in described switchover frame in the heart, and described pre-bending mechanism is fixedly mounted on the sidewall of described switchover frame.
In such scheme, described blank holder comprises two pieces of flanging blocks and one piece of flanging block backing plate, described two pieces of flanging blocks are arranged on described switchover frame bottom surface respectively by described flanging block backing plate, and the spacing between described two pieces of flanging blocks is greater than the lateral length of described round roller mechanism.By described blank holder is designed to split-type structural, avoid blank holder and round roller mechanism interferes, thus ensure that all need not dismantle described blank holder in two processs of the test, improve test efficiency.
In such scheme, in described first oil cylinder, described second oil cylinder and described drawing mechanism, be respectively equipped with measuring sensor.
In such scheme, described measuring sensor is force snesor.
In such scheme, the quantity of described first oil cylinder is 2, and 2 described first oil cylinders are arranged in described second oil cylinder both sides.
In such scheme, described round roller mechanism comprises bearing, round roller, insert and baffle plate, described insert is longitudinally inserted on described bearing, described round roller two ends are inserted in described insert, described baffle plate one end is fixedly mounted on described seat end surface, and the described baffle plate other end is fitted on the end face of described round roller.
In such scheme, between described insert bottom surface and described bearing, be provided with height adjusting blocks.By adding height adjusting blocks between described insert and bearing, the height of round roller can be adjusted according to actual needs.
In such scheme, be provided with compact heap between described insert side and described bearing, on described bearing, the position of corresponding described compact heap side is provided with trip bolt.By adding compact heap between described insert and bearing, the lateral attitude of round roller can be adjusted according to actual needs, simultaneously also can fastening described insert further.
The invention has the advantages that:
1, by adding the second oil cylinder of band drift on existing binding draw rebound test machine, and by switchover frame, pre-bending mechanism and blank holder are integrated, like this when doing binding draw rebound test and stretch bending rebound test, only alternately need change the round roller mechanism on worktable and die, achieve the object of dual-use, floor area is little and cost is low;
2, by described blank holder is designed to split-type structural, avoid blank holder and round roller mechanism interferes, thus ensure that all need not dismantle described blank holder in two processs of the test, improve test efficiency;
3, by adding height adjusting blocks and compact heap between described insert and bearing, the working position of round roller can be adjusted according to actual needs; Simultaneously also can fastening described insert further.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side-looking structural representation of Fig. 1;
Fig. 3 is the cross-sectional view of Fig. 1;
Fig. 4 is the structural representation of the present invention when doing binding draw rebound test;
Fig. 5 is the structural representation of the present invention when doing stretch bending rebound test;
Fig. 6 is the structural representation of round roller mechanism;
Fig. 7 is the cross-sectional view along A-A line in Fig. 6;
Fig. 8 is drift, position relationship structural representation between blank holder and die three;
Fig. 9 is the side-looking structural representation of Fig. 8.
In figure: frame 1, the first oil cylinder 2, crossbeam 3, pre-bending mechanism 4, worktable 5, round roller mechanism 6, bearing 6a, round roller 6b, insert 6c, baffle plate 6d, height adjusting blocks 6e, compact heap 6f, trip bolt 6g, drawing mechanism 7, the second oil cylinder 8, drift 9, blank holder 10, flanging block 10a, flanging block backing plate 10b, die 11, switchover frame 12, measuring sensor 13.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Embodiment: sheet material forming rebound performance testing machine as shown in Figure 1, comprise frame 1, be arranged on the first oil cylinder 2 on frame 1 end face, be slidably mounted on the crossbeam 3 be connected in frame 1 and with the telescopic end of the first oil cylinder 2, pre-bending mechanism 4, be arranged on the worktable 5 on frame 1 bottom surface, round roller mechanism 6, be arranged in the drawing mechanism 7 of worktable 5 both sides, be arranged on supercentral second oil cylinder 8 of frame 1 end face, be arranged on the drift 9 of the telescopic end of the second oil cylinder 8, the blank holder 10 cooperatively interacted and die 11, pre-bending mechanism 4 is arranged on crossbeam 3 by switchover frame 12, switchover frame 12 is provided with the through hole that drift 9 can be allowed to pass, blank holder 10 is arranged on the position of the corresponding drift 9 in switchover frame 12 bottom surface, during binding draw rebound test, round roller mechanism 6 is arranged on the position of corresponding drawing mechanism 7 bare terminal end on worktable 5, during stretch bending rebound test, die 11 is arranged on the position of corresponding drift 9 on worktable 5.By adding the second oil cylinder 8 of band drift 9 on existing binding draw rebound test machine, and by switchover frame 12, pre-bending mechanism 4 and blank holder 10 are integrated, like this when doing binding draw rebound test and stretch bending rebound test, only alternately need change the round roller mechanism 6 on worktable 5 and die 11, achieve the object of dual-use, floor area is little and cost is low.
Above-mentioned switchover frame 12 is arranged on the place of bottom center of crossbeam 3, and through hole to be vertically arranged in switchover frame 12 in the heart, and pre-bending mechanism 4 is fixedly mounted on the sidewall of switchover frame 12.
Above-mentioned blank holder 10 comprises two pieces of flanging block 10a and pieces of flanging block backing plate 10b, and two pieces of flanging block 10a are arranged on switchover frame 12 bottom surface respectively by flanging block backing plate 10b, and the spacing between two pieces of flanging block 10a is greater than the lateral length of round roller mechanism 6.By blank holder 10 is designed to split-type structural, avoids blank holder 10 and interfere with round roller mechanism 6, thus ensure that all need not dismantle blank holder 10 in two processs of the test, improve test efficiency.
Measuring sensor 13 is respectively equipped with in above-mentioned first oil cylinder 2, second oil cylinder 8 and drawing mechanism 7.Measuring sensor 13 is force snesor.The quantity of the first oil cylinder 2 is 2, and 2 the first oil cylinders 2 are arranged in the second oil cylinder 8 both sides.
Above-mentioned round roller mechanism 6 comprises bearing 6a, round roller 6b, insert 6c and baffle plate 6d, insert 6c is longitudinally inserted on bearing 6a, round roller 6b two ends are inserted in insert 6c, and baffle plate 6d one end is fixedly mounted on bearing 6a end face, and the baffle plate 6d other end is fitted on the end face of round roller 6b.Height adjusting blocks 6e is provided with between insert 6c bottom surface and bearing 6a.By adding height adjusting blocks 6e between insert 6c and bearing 6a, the height of round roller 6b can be adjusted according to actual needs.Be provided with compact heap 6f between insert 6c side and bearing 6a, on bearing 6a, the position of corresponding compact heap 6f side is provided with trip bolt 6g.By adding compact heap 6f between insert 6c and bearing 6a, the lateral attitude of round roller 6b can be adjusted according to actual needs, simultaneously also can fastening insert 6c further.
Round roller mechanism 6, when doing binding draw rebound test, only need to be arranged on worktable 5 and according to the state of actual condition adjustment round roller mechanism 6 by this testing machine; Now process of the test is (see Fig. 3): first, and the left end of sheet material clamps by the drawing mechanism 7 in left side; Then, the first oil cylinder 2 action, drive crossbeam 3 descending, thus drive switchover frame 12 and pre-bending mechanism 4 descending, until pre-bending mechanism 4 makes sheet deformation; After sheet deformation, the right-hand member of the sheet material after distortion clamps by the drawing mechanism 7 on right side; Meanwhile, the first oil cylinder 2 drives switchover frame 12 and pre-bending mechanism 4 to reset again; Then, test is completed after drawing mechanism 7 action movement certain displacement; Finally, unclamp two drawing mechanisms 7 respectively and take out the sheet material after testing.
When stretch bending rebound test need be done, first round roller mechanism 6 is pulled down from worktable 5, and die 11 is arranged on worktable 5; Now experimentation is (see Fig. 5): first, the first oil cylinder 2 action, drive crossbeam 3 descending, thus drive switchover frame 12 and blank holder 10 descending, until by plate compact on die 11; Then, the second oil cylinder 8 action, drives drift 9 descending with certain speed, thus makes plate stretch bend test; Finally, control the second oil cylinder 8 respectively and the first oil cylinder 2 resets, and take out bending after sheet material.
The present invention by adding the second oil cylinder 8 of band drift 9 on existing binding draw rebound test machine, and by switchover frame 12, pre-bending mechanism 4 and blank holder 10 are integrated, like this when doing binding draw rebound test and stretch bending rebound test, only alternately need change the round roller mechanism 6 on worktable 5 and die 11, achieve the object of dual-use, floor area is little and cost is low; By blank holder 10 is designed to split-type structural, avoids blank holder 10 and interfere with round roller mechanism 6, thus ensure that all need not dismantle blank holder 10 in two processs of the test, improve test efficiency; By adding height adjusting blocks 6e and compact heap 6f between insert 6c and bearing 6a, the working position of round roller 6b can be adjusted according to actual needs; Simultaneously also can fastening insert 6c further.
Claims (9)
1. a sheet material forming rebound performance testing machine, comprise frame (1), be arranged on the first oil cylinder (2) on described frame (1) end face, be slidably mounted on described frame (1) to go up and the crossbeam (3) be connected with the telescopic end of described first oil cylinder (2), pre-bending mechanism (4), be arranged on the worktable (5) on described frame (1) bottom surface, round roller mechanism (6), be arranged in the drawing mechanism (7) of described worktable (5) both sides, be arranged on supercentral second oil cylinder (8) of described frame (1) end face, be arranged on the drift (9) of the telescopic end of described second oil cylinder (8), the blank holder (10) cooperatively interacted and die (11), it is characterized in that: described pre-bending mechanism (4) is arranged on described crossbeam (3) by switchover frame (12), described switchover frame (12) is provided with the through hole that described drift (9) can be allowed to pass, described blank holder (10) is arranged on the position of the corresponding described drift (9) in described switchover frame (12) bottom surface, during binding draw rebound test, described round roller mechanism (6) is arranged on the position of upper corresponding described drawing mechanism (7) bare terminal end of described worktable (5), during stretch bending rebound test, described die (11) is arranged on the position of the upper corresponding described drift (9) of described worktable (5).
2. sheet material forming rebound performance testing machine according to claim 1, it is characterized in that: described switchover frame (12) is arranged on the place of bottom center of described crossbeam (3), described through hole to be vertically arranged in described switchover frame (12) in the heart, and described pre-bending mechanism (4) is fixedly mounted on the sidewall of described switchover frame (12).
3. sheet material forming rebound performance testing machine according to claim 1, it is characterized in that: described blank holder (10) comprises two pieces of flanging blocks (10a) and one piece of flanging block backing plate (10b), described two pieces of flanging blocks (10a) are arranged on described switchover frame (12) bottom surface respectively by described flanging block backing plate (10b), and the spacing between described two pieces of flanging blocks (10a) is greater than the lateral length of described round roller mechanism (6).
4. sheet material forming rebound performance testing machine according to claim 1, is characterized in that: be respectively equipped with measuring sensor (13) in described first oil cylinder (2), described second oil cylinder (8) and described drawing mechanism (7).
5. sheet material forming rebound performance testing machine according to claim 4, is characterized in that: described measuring sensor (13) is force snesor.
6. sheet material forming rebound performance testing machine according to claim 1, is characterized in that: the quantity of described first oil cylinder (2) is 2, and 2 described first oil cylinders (2) are arranged in described second oil cylinder (8) both sides.
7. sheet material forming rebound performance testing machine according to claim 1, it is characterized in that: described round roller mechanism (6) comprises bearing (6a), round roller (6b), insert (6c) and baffle plate (6d), described insert (6c) is longitudinally inserted on described bearing (6a), described round roller (6b) two ends are inserted in described insert (6c), described baffle plate (6d) one end is fixedly mounted on described bearing (6a) end face, and described baffle plate (6d) other end is fitted on the end face of described round roller (6b).
8. sheet material forming rebound performance testing machine according to claim 7, is characterized in that: be provided with height adjusting blocks (6e) between described insert (6c) bottom surface and described bearing (6a).
9. sheet material forming rebound performance testing machine according to claim 7, it is characterized in that: be provided with compact heap (6f) between described insert (6c) side and described bearing (6a), the position of upper corresponding described compact heap (6f) side of described bearing (6a) is provided with trip bolt (6g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258267.0A CN104062183B (en) | 2014-06-12 | 2014-06-12 | Sheet material forming rebound performance testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258267.0A CN104062183B (en) | 2014-06-12 | 2014-06-12 | Sheet material forming rebound performance testing machine |
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| CN104062183A CN104062183A (en) | 2014-09-24 |
| CN104062183B true CN104062183B (en) | 2016-04-27 |
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| CN201410258267.0A Active CN104062183B (en) | 2014-06-12 | 2014-06-12 | Sheet material forming rebound performance testing machine |
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| CN110567809B (en) * | 2019-09-15 | 2021-09-14 | 史丹 | Stress detection equipment for PTFE (Polytetrafluoroethylene) plates |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503255U (en) * | 2009-09-22 | 2010-06-09 | 宝山钢铁股份有限公司 | Torsion and resilience measuring device for stamped steel plate |
| CN102033013B (en) * | 2009-09-28 | 2012-04-25 | 宝山钢铁股份有限公司 | Method for measuring torsional resilience characteristics of plates |
| CN201548449U (en) * | 2009-10-28 | 2010-08-11 | 宝山钢铁股份有限公司 | Die for distortional springback characteristic experiment of stamped steel plate |
| CN201607362U (en) * | 2010-01-14 | 2010-10-13 | 宝山钢铁股份有限公司 | Die for bending test of metal sheet |
| CN201897552U (en) * | 2010-11-24 | 2011-07-13 | 浙江吉利汽车研究院有限公司 | Novel torsion rebound property experimental die for high-strength steel plate after punching and forming |
| CN102141491A (en) * | 2011-01-11 | 2011-08-03 | 重庆大学 | Universal test device of bending resilience of U-shaped and V-shaped plates |
| CN202963201U (en) * | 2012-10-31 | 2013-06-05 | 长城汽车股份有限公司 | Blank drawing die |
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Effective date of registration: 20170728 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 15 Wuchang, Wuhan Friendship Avenue, No. 999, block A, layer (Wuhan Iron and steel science and technology innovation department), No. 430080, Patentee before: Wuhan Iron & Steel (Group) Corp. |
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