CN205096348U - A punching press subassembly for shape of a saddle stamping workpiece - Google Patents
A punching press subassembly for shape of a saddle stamping workpiece Download PDFInfo
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- CN205096348U CN205096348U CN201520686696.8U CN201520686696U CN205096348U CN 205096348 U CN205096348 U CN 205096348U CN 201520686696 U CN201520686696 U CN 201520686696U CN 205096348 U CN205096348 U CN 205096348U
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- 238000004080 punching Methods 0.000 title claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims description 122
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 238000000465 moulding Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000037303 wrinkles Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 244000309464 bull Species 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- HCOLPNRPCMFHOH-UHFFFAOYSA-N Prodigiosin Natural products CCCCCC1C=C(C=C/2N=C(C=C2OC)c3ccc[nH]3)N=C1C HCOLPNRPCMFHOH-UHFFFAOYSA-N 0.000 description 1
- 230000001195 anabolic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWFGRJUTAULJPZ-USZBIXTISA-N prodigiosin Chemical compound N1=C(C)C(CCCCC)=C\C1=C/C1=NC(C=2[N]C=CC=2)=C[C]1OC TWFGRJUTAULJPZ-USZBIXTISA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model relates to a punching press subassembly for shape of a saddle stamping workpiece, a serial communication port, including forming die and plastic mould, forming die carry out one -off impact briquetting to the tablet, form and treat plastic shape of a saddle stamping workpiece, plastic mould right treat that plastic shape of a saddle stamping workpiece carries out secondary punching press plastic, reduce two lateral wall subtended angles, bear the compensation of kick -backing. One shot forming becomes to treat the shape of a saddle stamping workpiece of plastic with the tablet punching press, and lateral wall subtended angle and the bullnose punching press plastic of the shape of a saddle stamping workpiece of plastic then will be treated in the secondary plastic, utilizes kick -back formation meet the standard's shape of a saddle stamping workpiece of product lateral wall burden. Compared with the prior art, the utility model discloses the product that obtains is out of shape less, wrinkles lowly, especially divides well by nature at the fillet part, and the product yield improves greatly, need not draw processing and subsequent repair work to reduce the cost of labor.
Description
Technical field
The utility model relates to a kind of diel, especially relates to a kind of punch assembly for shape of a saddle stamping parts.
Background technology
As shown in accompanying drawing Fig. 7, the similar saddle of shape of a saddle stamping parts product design, end face is S shape curved surface, in a certain angle between two shape of a saddle stamping parts sidewalls and end face, and shape of a saddle stamping parts lateral wall and end face junction are circle product external angle.
Shape of a saddle stamping parts complex forming technology is not independent swaging and drawing process usually.Plate is in stamping process, and the stress distribution situation on plate is very complicated, from mode of texturing, and the anabolic process of the formability drawing often of plate, flange, the various deformation mode such as bending.Saddle type middle part usually exists larger compression makes material wrinkling, and the darker part of concave shape exists larger tension at saddle type two ends and side, makes material cracks.
Traditional processing mode is divided into two kinds: one first plane tablet is converted into U-shaped, rear swaging tablet top, forms the shape of a saddle; Another kind is first swaging top, rear swaging side.In peace bending is analyzed, all can there is folded material and serious cracking phenomena, cannot the end be formed in two kinds of modes; If adopt the process of drawing mode, then to increase binder, easier drawing crack time shaping, and follow-uply want side trimming to increase operation, increase cost.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and the punch assembly for shape of a saddle stamping parts that a kind of good forming effect, cost are low, bedding-in amount is low is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of punch assembly for shape of a saddle stamping parts, it is characterized in that, comprise mould and shaping mould, described mould comprises forming convax mould and molding concave die, carries out one time punching molded to tablet, is formed and treats shaping shape of a saddle stamping parts, described shaping mould comprises integer punch and integer die, treat that shaping shape of a saddle stamping parts carries out two times punch shaping to described, two sidewall subtended angles are reduced, make the inwardly negative resilience of two sidewalls.
Described molding concave die is provided with shaping groove, and this shaping groove sidewall and bottom land angle are 95 ° ~ 105 °.
Described mould comprises the first upper mould fixed plate, cope match-plate pattern, counterdie fixed head, counterdie insert and counterdie stripper plate, described cope match-plate pattern is fixed on the first upper mould fixed plate, cope match-plate pattern forms forming convax mould, described counterdie insert is arranged on counterdie fixed head, counterdie insert forms molding concave die, described counterdie stripper plate floats on molding concave die die orifice, and forming convax mould coordinates with counterdie stripper plate tablet end face die mould, and forming convax mould and molding concave die close and tablet is struck out the shape of a saddle.
Described shaping groove sidewall and bottom land junction are shaping fillet, and this shaping fillet radius of curvature is 1.8 ~ 2.2 times of circle product external angle radius of curvature.
Described mould also comprises the counterdie Lifting Device for upwards being ejected by tablet.
Described counterdie Lifting Device is nitrogen spring, and fixing bottom described nitrogen spring, top is not less than molding concave die die orifice, and time one time punching molded, nitrogen spring is compressed, and after one time punching molded, cope match-plate pattern upwards returns, and tablet upwards ejects by nitrogen spring.
Described mould also comprises the buoyant pin assemblies be arranged on cope match-plate pattern.
Described shaping mould comprises the second upper mould fixed plate, patrix insert, lower bolster and the second counterdie fixed head, described patrix insert is arranged on the second upper mould fixed plate, form shaping terrace die, described lower bolster is fixed on the second counterdie fixed head, lower bolster is provided with shaping groove, this shaping recess sidewall and shaping groove floor angle are 90 ° ~ 95 °, and the gap of described shaping terrace die and shaping groove fit is 0.9 ~ 0.98 times that treats shaping shape of a saddle stamping parts thickness.
Described shaping recess sidewall and bottom land junction are shaping fillet, and this shaping fillet radius of curvature is 1 ~ 1.2 times of circle product external angle radius of curvature.
Described shaping mould also comprises the upper die ejector device for being ejected by tablet downwards, described upper die ejector device comprises patrix de-material block and Rectangular Spring, described patrix de-material block is arranged on place concordant with shaping terrace die die orifice, described Rectangular Spring top is fixed, bottom is stretched out bottom shaping terrace die, before two times punch shaping, treat that shaping shape of a saddle stamping parts is placed on shaping terrace die, during two times punch shaping, Rectangular Spring is compressed, shaping terrace die upwards backhaul time, Rectangular Spring bottom is ejected bottom shaping terrace die, ejects patrix de-material block and tablet.
Compared with prior art, the utility model has the following advantages:
(1) traditional impact style is changed, one-shot forming and secondary reshaping are combined, tablet is shapingly struck out the shape of a saddle stamping parts treating shaping by first time, secondary reshaping then will treat sidewall subtended angle and the punching press shaping of circle product external angle of the shape of a saddle stamping parts of shaping, utilize product sidewall to bear resilience and form standard compliant shape of a saddle stamping parts, the deformation of products that obtains of method is few, wrinkling low thus, especially dividing at fillet part becomes second nature well, product yield improves greatly, do not need to carry out stretch processing and follow-up repair work, reduce cost of labor.
(2) in mould, shaping groove sidewall and bottom land angle are 95 ° ~ 105 °, are conducive to reducing the phenomenons such as product cracking, fold; In shaping mould, shaping recess sidewall and shaping groove floor angle are 90 ° ~ 95 °, this angle is larger than the angle between standard component sidewall and end face, play springback compensation effect, angular dimension is selected based on software analysis result and actual process condition composite factor, is conducive to reaching best product molding effect.
(3) the molding concave die radius of corner of mould is designed to 1.8 ~ 2.2 times of final products bull nose, is conducive to secondary reshaping, prevent part ftracture and wrinkling.
(4) use nitrogen spring during one-shot forming, pressure uniform, improve Forming Quality.
(5) during secondary reshaping, by by two of shape of a saddle stamping parts sides to adduction, the stress of generation makes side inwardly negative resilience, and according to bounce-back curved design correcting die, the shape of product that shaping obtains is better, reduces the bedding-in amount of pincers worker.
(6) only need two procedures, without the need to carrying out drawing process, cost is low.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the utility model mould;
Fig. 2 is the utility model embodiment mould plan structure schematic diagram;
Fig. 3 is the main TV structure schematic diagram of the utility model embodiment shaping mould;
Fig. 4 is the utility model embodiment shaping mould plan structure schematic diagram;
When Fig. 5 is one-shot forming, molding concave die and tablet schematic shapes;
Fig. 6 is before and after secondary reshaping, stamping parts change in shape schematic diagram;
Fig. 7 is for using the utility model embodiment rammed shape of a saddle stamping parts schematic diagram;
Fig. 8 is the CAE industrial analysis result figure using the present embodiment mould parameter;
Reference numeral: 11, the first upper mould fixed plate; 12, cope match-plate pattern; 13, counterdie fixed head; 14, counterdie insert; 15, nitrogen spring; 16, buoyant pin assemblies; 17, counterdie stripper plate; 21, the second upper mould fixed plate; 22, patrix insert; 23, lower bolster; 24, the second counterdie fixed head; 25, patrix de-material block; 26, Rectangular Spring; 3, circle product external angle; 4, shape of a saddle stamping parts sidewall.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.The present embodiment is implemented premised on technical solutions of the utility model, give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1
As shown in figures 1-4, a kind of punch assembly for shape of a saddle stamping parts, comprise mould and shaping mould, mould carries out one time punching molded to tablet, shaping shape of a saddle stamping parts is treated in formation, to described, shaping mould treats that shaping shape of a saddle stamping parts carries out two times punch shaping, reduced by two sidewall subtended angles, carry out negative springback compensation.The shape of a saddle stamping parts of final formation as shown in Figure 7.
Mould comprises the first upper mould fixed plate 11, cope match-plate pattern 12, counterdie fixed head 13, counterdie insert 14 and counterdie stripper plate 17, cope match-plate pattern 12 is fixed on the first upper mould fixed plate 11, cope match-plate pattern 12 forms forming convax mould, counterdie insert 14 is arranged on counterdie fixed head 13, counterdie insert 14 forms molding concave die, this molding concave die is provided with shaping groove, this shaping groove sidewall and bottom land angle are 105 °, shaping groove sidewall and bottom land junction are shaping fillet, this shaping fillet radius of curvature is the twice of circle product external angle 3 radius of curvature, to reduce product cracking, be beneficial to secondary reshaping.Before one time punching molded, counterdie stripper plate 17 floats on molding concave die die orifice, tablet is placed on counterdie stripper plate 17, and time one time punching molded, cope match-plate pattern 12 moves downward, tablet is pressed between forming convax mould and counterdie stripper plate 17, to tablet end face die mould, be namely pressed into the S shape of shape of a saddle stamping parts end face, cope match-plate pattern 12 continues to move downward, forming convax mould and molding concave die close, and tablet is struck out the shape of a saddle.
Mould also comprises the counterdie Lifting Device for upwards being ejected by tablet, this counterdie Lifting Device is nitrogen spring 15, fixing bottom nitrogen spring 15, top is not less than molding concave die die orifice, time one time punching molded, nitrogen spring 15 is compressed, after one time punching molded, cope match-plate pattern 12 upwards returns, and tablet upwards ejects by nitrogen spring 15.For preventing tablet from sticking on forming convax mould, cope match-plate pattern 12 is provided with buoyant pin assemblies 16, for being ejected from forming convax mould by tablet.
Shaping mould comprises the second upper mould fixed plate 21, patrix insert 22, lower bolster 23 and the second counterdie fixed head 24, and patrix insert 22 is arranged on the second upper mould fixed plate 21, and form shaping terrace die, lower bolster 23 is fixed on the second counterdie fixed head 24.Lower bolster 23 is provided with shaping groove, this shaping recess sidewall and shaping groove floor angle are 95 °, shaping recess sidewall and bottom land junction are shaping fillet, this shaping fillet radius of curvature is equal with circle product external angle 3 radius of curvature, so that circle product external angle 3 is shaped to standard compliant size, the gap of described shaping terrace die and shaping groove fit is 0.95 times that treats shaping shape of a saddle stamping parts thickness, thus produce negative resilience, make two sidewall subtended angles continue to reduce, make shape of a saddle stamping parts sidewall 4 and end face angle reach standard.During two times punch shaping, patrix insert 22 moves downward, shaping terrace die coordinates with correcting die and is reduced by two of shape of a saddle stamping parts sidewall subtended angles, now two shape of a saddle stamping parts sidewalls 4 inwardly will bear resilience under the effect of internal stress, form the shape of a saddle stamping parts meeting 90 ° of standards after the inside resilience of sidewall.
Shaping mould also comprises the upper die ejector device for being ejected by tablet downwards, upper die ejector device comprises patrix de-material block 25 and Rectangular Spring 26, patrix de-material block 25 is arranged on place concordant with shaping terrace die die orifice, Rectangular Spring 26 top is fixed, bottom is stretched out bottom shaping terrace die, before two times punch shaping, treat that shaping shape of a saddle stamping parts is placed on shaping terrace die, during two times punch shaping, Rectangular Spring 26 is compressed, shaping terrace die upwards backhaul time, Rectangular Spring 26 bottom is ejected bottom shaping terrace die, ejects patrix de-material block 25 and tablet.
Counterdie stripper plate original state flushes with correcting die mouth under the effect of nitrogen spring to be convenient to set level tablet, and during mold work, tightly push down tablet with counterdie stripper plate makes it into S shape to shaping terrace die downwards.Continue lower swage set piece to be shaped in correcting die chamber, now mould is in closure state.During forcing press backhaul, nitrogen spring pops up counterdie stripper plate, ejects workpiece.In order to prevent workpiece from adhering to, shaping terrace die is installed buoyant pin assemblies, workpiece can be ejected from shaping terrace die.
When Fig. 5 is one-shot forming, molding concave die and tablet schematic diagram; Fig. 6 is before and after secondary reshaping, stamping parts change in shape schematic diagram.As can be seen from Figure during secondary reshaping, reduced at circle product external angle 3, the subtended angle of shape of a saddle stamping parts sidewall 4 reduces.
When one-shot forming, part is easy to crack and wrinkling, in order to make product shaping smoothly, about two times that bull nose are made circle product external angle 3, the subtended angle of two sidewalls is first struck out the angle being greater than standardized product; When secondary reshaping, bull nose is shaped to standard value, the subtended angle of two sidewalls is reduced simultaneously.Influence factor is a lot of in this process, comprise the lubricating condition, process conditions (as pressure-pad-force, stamping press, punching press frequency, drawing velocity) etc. of the forming property of material, plate original shape and size, mould geometry, mould and plate, these factors intercouple, mutual restriction, affects sheet metal forming quality to some extent.So molding concave die fillet design becomes R10 and requires fineness more than 0.4 when the structural design of mould, during one-shot forming, material will carry out under uniform pressure-plate-force, therefore adopts nitrogen spring to provide stable pressure-plate-force.During secondary reshaping, Rectangular Spring pressure-plate-force is larger, and negative resilience is less.
The resilience of common product is all to external expansion, and in the present embodiment, due to the particularity of the ess-strain of this series products, product is inside resilience, and this is consistent with cae analysis.As shown in the cae analysis result of Fig. 8, in figure, a-quadrant represents well shaping, the non-deformation state of B Regional Representative, and C Regional Representative material has slight wrinkling state, and all the other are transitional region.To be rebounded preferably curved surface according to cae analysis result ThinkDesign software.Greatly reduce the bedding-in amount of pincers worker master worker according to the sizing die prodigiosin of bounce-back curved design, even do not use repair.
Embodiment 2
In described mould, shaping groove sidewall and bottom land angle are 100 °, in described shaping mould, shaping recess sidewall and shaping groove floor angle are 95 °, the gap of shaping terrace die and shaping groove fit is 0.9 times that treats shaping shape of a saddle stamping parts thickness, and all the other are identical with embodiment 1.For the lubricating condition, process conditions (as pressure-pad-force, stamping press, punching press frequency, drawing velocity) etc. of the forming property of different materials, plate original shape and size, mould geometry, mould and plate, design different springback compensation angles and circle product external angle 3, to reach optimum efficiency.
Embodiment 3
In described mould, shaping groove sidewall and bottom land angle are 95 °, in described shaping mould, shaping recess sidewall and shaping groove floor angle are 90 °, the gap of shaping terrace die and shaping groove fit is 0.98 times that treats shaping shape of a saddle stamping parts thickness, and all the other are identical with embodiment 1.
Except the structure described in above embodiment 1 ~ 3, the utility model also completes the process of one-shot forming and secondary reshaping by similar mould structure and Lifting Device.
Claims (10)
1. the punch assembly for shape of a saddle stamping parts, it is characterized in that, comprise mould and shaping mould, described mould comprises forming convax mould and molding concave die, carries out one time punching molded to tablet, is formed and treats shaping shape of a saddle stamping parts, described shaping mould comprises integer punch and integer die, treat that shaping shape of a saddle stamping parts carries out two times punch shaping to described, two sidewall subtended angles are reduced, make the inwardly negative resilience of two sidewalls.
2. a kind of punch assembly for shape of a saddle stamping parts according to claim 1, it is characterized in that, described molding concave die is provided with shaping groove, and this shaping groove sidewall and bottom land angle are 95 ° ~ 105 °.
3. a kind of punch assembly for shape of a saddle stamping parts according to claim 2, it is characterized in that, described mould comprises the first upper mould fixed plate (11), cope match-plate pattern (12), counterdie fixed head (13), counterdie insert (14) and counterdie stripper plate (17), described cope match-plate pattern (12) is fixed on the first upper mould fixed plate (11), cope match-plate pattern (12) forms forming convax mould, described counterdie insert (14) is arranged on counterdie fixed head (13), counterdie insert (14) forms molding concave die, described counterdie stripper plate (17) floats on molding concave die die orifice, forming convax mould coordinates with counterdie stripper plate tablet end face die mould, forming convax mould and molding concave die close and tablet are struck out the shape of a saddle.
4. a kind of punch assembly for shape of a saddle stamping parts according to Claims 2 or 3, it is characterized in that, described shaping groove sidewall and bottom land junction are shaping fillet, and this shaping fillet radius of curvature is 1.8 ~ 2.2 times of circle product external angle (3) radius of curvature.
5. a kind of punch assembly for shape of a saddle stamping parts according to claim 3, is characterized in that, described mould also comprises the counterdie Lifting Device for upwards being ejected by tablet.
6. a kind of punch assembly for shape of a saddle stamping parts according to claim 5, it is characterized in that, described counterdie Lifting Device is nitrogen spring (15), described nitrogen spring (15) bottom is fixing, and top is not less than molding concave die die orifice, time one time punching molded, nitrogen spring (15) is compressed, after one time punching molded, cope match-plate pattern (12) upwards returns, and tablet upwards ejects by nitrogen spring (15).
7. a kind of punch assembly for shape of a saddle stamping parts according to claim 3, is characterized in that, described mould also comprises the buoyant pin assemblies (16) be arranged on cope match-plate pattern (12).
8. a kind of punch assembly for shape of a saddle stamping parts according to claim 1, it is characterized in that, described shaping mould comprises the second upper mould fixed plate (21), patrix insert (22), lower bolster (23) and the second counterdie fixed head (24), described patrix insert (22) is arranged on the second upper mould fixed plate (21), form shaping terrace die, described lower bolster (23) is fixed on the second counterdie fixed head (24), lower bolster (23) is provided with shaping groove, this shaping recess sidewall and shaping groove floor angle are 90 ° ~ 95 °, the gap of described shaping terrace die and shaping groove fit is 0.9 ~ 0.98 times that treats shaping shape of a saddle stamping parts thickness.
9. a kind of punch assembly for shape of a saddle stamping parts according to claim 8, it is characterized in that, described shaping recess sidewall and bottom land junction are shaping fillet, and this shaping fillet radius of curvature is 1 ~ 1.2 times of circle product external angle (3) radius of curvature.
10. a kind of punch assembly for shape of a saddle stamping parts according to claim 8, it is characterized in that, described shaping mould also comprises the upper die ejector device for being ejected by tablet downwards, described upper die ejector device comprises patrix de-material block (25) and Rectangular Spring (26), described patrix de-material block (25) is arranged on place concordant with shaping terrace die die orifice, described Rectangular Spring (26) top is fixed, bottom is stretched out bottom shaping terrace die, before two times punch shaping, treat that shaping shape of a saddle stamping parts is placed on shaping terrace die, during two times punch shaping, Rectangular Spring (26) is compressed, shaping terrace die upwards backhaul time, Rectangular Spring (26) bottom is ejected bottom shaping terrace die, eject patrix de-material block (25) and tablet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686696.8U CN205096348U (en) | 2015-09-07 | 2015-09-07 | A punching press subassembly for shape of a saddle stamping workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686696.8U CN205096348U (en) | 2015-09-07 | 2015-09-07 | A punching press subassembly for shape of a saddle stamping workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205096348U true CN205096348U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686696.8U Withdrawn - After Issue CN205096348U (en) | 2015-09-07 | 2015-09-07 | A punching press subassembly for shape of a saddle stamping workpiece |
Country Status (1)
| Country | Link |
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| CN (1) | CN205096348U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107950A (en) * | 2015-09-07 | 2015-12-02 | 上海奥林汽车配件有限公司 | Punching assembly used in saddle-shaped punching part |
| CN112453201A (en) * | 2020-10-30 | 2021-03-09 | 重庆至信实业集团有限公司 | Processing technology based on taillight flume assembly |
| CN113312700A (en) * | 2021-04-06 | 2021-08-27 | 中国第一汽车股份有限公司 | Method for calculating springback compensation value of high-strength plate stamping part |
-
2015
- 2015-09-07 CN CN201520686696.8U patent/CN205096348U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107950A (en) * | 2015-09-07 | 2015-12-02 | 上海奥林汽车配件有限公司 | Punching assembly used in saddle-shaped punching part |
| CN105107950B (en) * | 2015-09-07 | 2017-06-23 | 上海奥林汽车配件有限公司 | A kind of punch assembly for shape of a saddle stamping parts |
| CN112453201A (en) * | 2020-10-30 | 2021-03-09 | 重庆至信实业集团有限公司 | Processing technology based on taillight flume assembly |
| CN113312700A (en) * | 2021-04-06 | 2021-08-27 | 中国第一汽车股份有限公司 | Method for calculating springback compensation value of high-strength plate stamping part |
| CN113312700B (en) * | 2021-04-06 | 2023-06-13 | 中国第一汽车股份有限公司 | Calculation method for rebound compensation value of high-strength plate stamping part |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160323 Effective date of abandoning: 20170623 |
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| AV01 | Patent right actively abandoned |