CN101913316A - Door panel part and secondary drawing and punching method of door panel - Google Patents
Door panel part and secondary drawing and punching method of door panel Download PDFInfo
- Publication number
- CN101913316A CN101913316A CN 201010246420 CN201010246420A CN101913316A CN 101913316 A CN101913316 A CN 101913316A CN 201010246420 CN201010246420 CN 201010246420 CN 201010246420 A CN201010246420 A CN 201010246420A CN 101913316 A CN101913316 A CN 101913316A
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- inner panel
- binder surface
- draws
- door inner
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004080 punching Methods 0.000 title abstract 2
- 239000011230 binding agent Substances 0.000 claims description 65
- 239000011324 bead Substances 0.000 claims description 28
- 238000003825 pressing Methods 0.000 abstract description 9
- 238000009966 trimming Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Abstract
The invention relates to a door panel part and a secondary drawing and punching method of a door panel. The door panel part comprises a primary-drawing pressing surface, a secondary-drawing pressing surface and an edge covering flange area, wherein a step is formed on the outer side of the edge covering flange area; a drawing rib for use in primary drawing is arranged on the inner side of the secondary-drawing pressing surface; and the secondary-drawing pressing surface is positioned below the primary-drawing pressing surface.
Description
Technical field
The present invention relates to the automobile body-in-white part and make the field, particularly relate to the automobile body-in-white panel beating and become type analysis and stamped, be specifically related to a kind of inner panel part and door inner panel secondary drawing process for stamping.
Background technology
Along with the continuous progress of auto trade, people require more and more to automobile function, and more and more higher to the surface quality of workpieces requirement, this just requires the designer to improve constantly the design and processes level.The overall drawing depth of door inner panel part is bigger, and in the forming process, the part bottom can exist wrinkling simultaneously and cracking phenomena (part shape is seen shown in Fig. 1 dashed region).For fear of above-mentioned defective, when mould-manufacturing, need to adopt the Sheet Metal Forming Technology of secondary drawing, reduce the part forming difficulty, guarantee part quality.The stamping process design of drawing for the second time can directly have influence on the part final condition.Stamping process design is unreasonable, can prolong the debugging amount of mould, increases the cost that generates, and reduces the face product quality of part, has a strong impact on the outward appearance of car load.Below the secondary drawing stamping process design of the door inner panel part of some vehicle is simply described.
1, be example with the AXX vehicle, the section line of part correspondence position A-A as shown in Figure 2: for the first time during drawing work, bead position (D) is arranged on the binder surface that draws for the second time (Y2) in design.When plate is shaped for the first time, because that the position (D) of bead separates loft is far away, the control difficulty that bead flows to plate, part quality be cannot say for sure card.Plate is when drawing for the second time, because bead position (D) is on the binder surface (Y2) that draws for the second time, the plate resistance to flow is bigger during shaping, and the part cracking is quite serious.Because the position (D) of bead is far away, the stock utilization of plate is relatively poor.
2, be example with the BXX vehicle, the section line of part correspondence position A-A is as shown in Figure 3: design is for the first time during drawing work, bead position (D) is apart from part trimming line (B) hypotelorism, part is after being drawn into the end for the second time, the shape of bead is retained in the bound edge flange region (S) of part, causes part bound edge flange uneven, and the face product are of poor quality, distortion is serious, influences the quality of outside plate after the pressing.
3, be example with the SXX vehicle, the section line of part correspondence position A-A is as shown in Figure 4: design is for the second time during drawing work, the bound edge flange (S) of part is not provided with step, the operation part is when drawing for the second time, because bound edge flange region (S) is shaped at last, plate does not produce sufficient plastic deformation, and regional area has the compression wrinkling.After the deburring of operation part, bound edge flange (S) can produce bigger resilience.Influence the quality of outside plate after the pressing.
4, be example with the MXX vehicle, the section line of part correspondence position A-A as shown in Figure 5: design is during Sheet Metal Forming Technology, and binder surface (Y1) position that the binder surface (Y2) that draws for the second time and the first time draw overlaps fully.Plate is when being shaped for the first time, because the flowing of material, thickness appears in the material part of binder surface zone (Y1) to be increased, simultaneously because the resilience of binder surface, and other factors such as manual operation, the distortion of operation part is difficult to control.Binder surface (Y2) that draws for the second time and binder surface (Y1) position of drawing for the first time overlap fully, and before drawing for the second time, the operation part can be because the distortion in binder surface zone by jack-up, can't precisely be located, and part quality can't guarantee.
In sum, have following technical matters in the prior art: the door inner panel causes the wrinkling resilience of bound edge flange region serious because the secondary drawing technological design is unreasonable; The operation part can't accurately be located, and it is serious to cause the whole part distortion to be pulled, and has a strong impact on the car load outward appearance; The bead Position Design is unreasonable, causes the stock utilization height, the die debugging excessive cycle, and cost increases.
Summary of the invention
The objective of the invention is to improve the quality of whole door inner panel part; Solve the wrinkling resilience of door inner panel bound edge flange region, improve the outward appearance of car load; Improve stock utilization, reduce the debugging of mould, reduce manufacturing cost.
Specifically, the object of the present invention is to provide a kind of inner panel part and door inner panel secondary drawing process for stamping, at step of door inner panel bound edge flange region arranged outside; Bead is arranged on the binder surface inboard of drawing for the second time, by dimensional control bead position; Binder surface when drawn the first time generates the binder surface that draws for the second time toward below-center offset 3mm.
Concrete technical scheme is as follows:
A kind of inner panel part comprises the binder surface that draws for the first time, the binder surface and the bound edge flange region of drawing for the second time; Wherein, the outside of described bound edge flange region is provided with a step, and the inboard of the binder surface of described secondary drawing is provided for the bead that draws for the first time, and the binder surface that draws the described second time is positioned at the binder surface below of drawing for the first time.
Further, the outside of described step is binder surface that draws for the first time and the binder surface that draws for the second time.
Further, the position of described step is positioned at the bound edge flange region of an inner panel and extends the 5-15mm place outward, and its degree of depth is that 3-5mm, width are 10-40mm.
Further, the binder surface that draws the described second time is generated by the binder surface biased downward 3mm that draws for the first time.
Further, bead is positioned at binder surface inboard of secondary drawing and by formula L1＞L2+3mm control, wherein, L1 be the size that door inner panel part launches, and the plate when L2 drew for the first time is long.
The door inner panel secondary drawing process for stamping of above-mentioned door inner panel part, at step of door inner panel bound edge flange region arranged outside, design and be provided with the bead that draws for the first time in the binder surface inboard of drawing for the second time, the binder surface biased downward certain distance that draws is for the first time generated the binder surface that draws the second time.
Further, the binder surface that draws the described second time is generated by the binder surface biased downward 3mm that draws for the first time.
Further, the bound edge flange region of door inner panel is extended 10mm outward, generating the degree of depth downwards is that 3mm, width are the described step of 15mm, and the draft angle of described step is greater than 10 °.
Further, the position of bead is by formula L1＞L2+3mm control, and wherein, L1 is the size that door inner panel part launches, and the plate when L2 drew for the first time is long.
Compare with present prior art, the appropriate design of bead of the present invention position can improve the formability of whole part, reduces the cracking wrinkling; Reasonable clearance between the binder surface of secondary drawing can guarantee the accurate location of operation part, improves the total quality of part; The increase of step can be controlled wrinkling rebound phenomenon, guarantees the quality of bound edge flange.
Description of drawings
Fig. 1: door inner panel scheme drawing;
Fig. 2: existing bead position scheme drawing on the binder surface that draws for the second time;
Fig. 3: existing bead position is apart from part trimming line hypotelorism scheme drawing;
Fig. 4: the step scheme drawing was not designed on the pressing limit when existing part drew for the second time;
Fig. 5: the binder surface that existing part draws for the second time and once draws overlaps scheme drawing;
Fig. 6: the secondary drawing stamping process design Parameter Map that the present invention recommends;
Among the figure:
Fig. 2:
B: bound edge flange region trimming line
E: binder surface parting line when drawing for the second time
D: bead line of centers
P: door inner panel part
Y1: the binder surface that draws for the first time
Y2: the binder surface that draws for the second time
Fig. 3:
A: the reference position in shaping zone
S: bound edge flange region
B: bound edge flange region trimming line
C: bead fillet root
D: bead line of centers
P: door inner panel part
Y1: the binder surface that draws for the first time
Y2: the binder surface that draws for the second time
21: plate length of run when drawing for the first time
22: the part length of run
Fig. 4:
S: bound edge flange region
B: bound edge flange region trimming line
P: door inner panel part
Y1: the binder surface that draws for the first time
Y2: the binder surface that draws for the second time
Fig. 5:
B: bound edge flange region trimming line
E: binder surface parting line when drawing for the second time
P: door inner panel part
Y1: the binder surface that draws for the first time
Y2: the binder surface that draws for the second time
Fig. 6:
A: the reference position in shaping zone
B: bound edge flange region trimming line
C: bead fillet root
D: bead line of centers
E: binder surface parting line when drawing for the second time
P: door inner panel part
Y1: the binder surface that draws for the first time
Y2: the binder surface that draws for the second time
11: the bound edge flange region is extended 5-15mm outward, preferred 10mm
12: step width: 10-40mm
13: the step degree of depth: 3-5mm, preferred 3mm
14: step outside draft angle: greater than 10 °
21: plate length of run when drawing for the first time
22: part length of run 31: binder surface and binder surface distance: 3mm for the first time for the second time
The specific embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
As shown in Figure 6, the object of the present invention is to provide a kind of inner panel secondary drawing stamping process design, at downward step of door inner panel bound edge flange region (S) arranged outside, being designed to of step: at first door inner panel bound edge flange region (S) is extended 5-15mm outward, preferred 10mm, mould strength when guaranteeing deburring.Generate a step downwards, the step depth control is at 3-5mm, preferred 3mm, and part forming in order to guarantee to draw for the second time, the width of step is controlled at 10-40mm, and concrete numerical value is determined by the shaping degree of depth.For the ease of flowing of material, the draft angle of step is greater than 10 °, and above parameter reaches the most rational stock utilization under the prerequisite that guarantees part quality;
The position of bead (D), on the horizontal position, at first to be arranged on binder surface (Y2) inboard when drawing for the second time, the long L2 decision in plate cross section when the sectional dimension L1 that is launched by part drew with the first time simultaneously, the plate of L2 except providing L1 to be shaped also needs to get 3mm usually to certain surplus, in order to guarantee pressing flange region (S) precision, bead position (D) is by formula L1＞L2+3mm control; This parameter can ensure the part forming quality safely;
The binder surface (Y2) that draws for the second time, binder surface (Y1) when being drawn by the first time generates toward below-center offset (31), biasing numerical value (31) is too small, and plate is when drawing for the second time, and the operation part is easily by jack-up, can't accurately locate, cause part deformation serious, biasing numerical value (31) is bigger than normal, and binder surface is when closure, can cause sheet metal deformation, the part quality behind the secondary drawing also is difficult to control.By field adjustable and experience accumulation, the numerical value of binder surface (Y1) biased downward that suggestion is drawn is for the first time got 3mm, this numerical value is accurately located when drawing for the second time except guaranteeing part, can control that material flows when drawing for the second time simultaneously, guarantees part quality.
Improvement by to mould in die debugging and the production sums up most of inner panel part qualities and is difficult to control, the reason that the parts scrap rate is high, and except the design of part design was unreasonable, also having greatly, reason was that technological design is unreasonable.Use for reference the design technology of domestic external door inner panel part, present situation in conjunction with our company's production, now recommended above door inner panel secondary drawing stamping process design, this design is guaranteeing under the part function prerequisite, improve the quality of part, optimized process program, reduced productive costs, improve the degree of utilization of material, shortened the cycle of car load exploitation.
Adopt method proposed by the invention, not only can solve above-described defective, and, save great amount of cost guaranteeing to shorten the car load development time under the product quality premise.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (9)
1. a door inner panel part is characterized in that, comprises the binder surface that draws for the first time, the binder surface and the bound edge flange region of drawing for the second time; Wherein, the outside of described bound edge flange region is provided with a step, and the inboard of the binder surface of described secondary drawing is provided for the bead that draws for the first time, and the binder surface that draws the described second time is positioned at the binder surface below of drawing for the first time.
2. door inner panel part as claimed in claim 1 is characterized in that, the outside of described step is binder surface that draws for the first time and the binder surface that draws for the second time.
3. door inner panel part as claimed in claim 1 or 2 is characterized in that the position of described step is positioned at the bound edge flange region of an inner panel and extends the 5-15mm place outward, and its degree of depth is that 3-5mm, width are 10-40mm.
4. as each described door inner panel part among the claim 1-3, it is characterized in that the binder surface that draws the described second time is generated by the binder surface biased downward 3mm that draws for the first time.
5. as each described door inner panel part among the claim 1-4, it is characterized in that bead is positioned at binder surface inboard of secondary drawing and by formula L1＞L2+3mm control, wherein, L1 is the size that door inner panel part launches, and the plate when L2 drew for the first time is long.
6. door inner panel secondary drawing process for stamping as door inner panel part as described in the claim 1-5, it is characterized in that, at step of door inner panel bound edge flange region arranged outside, design and be provided with the bead that draws for the first time in the binder surface inboard of drawing for the second time, the binder surface biased downward certain distance that draws is for the first time generated the binder surface that draws the second time.
7. door inner panel secondary drawing process for stamping as claimed in claim 6 is characterized in that the binder surface that draws the described second time is generated by the binder surface biased downward 3mm that draws for the first time.
8. door inner panel secondary drawing process for stamping as claimed in claim 7 is characterized in that the bound edge flange region of door inner panel is extended 10mm outward, and generating the degree of depth downwards is that 3mm, width are the described step of 15mm, and the draft angle of described step is greater than 10 °.
9. as claimed in claim 8 inner panel secondary drawing process for stamping is characterized in that, the position of bead is by formula L1＞L2+3mm control, and wherein, L1 is the size that door inner panel part launches, and the plate when L2 drew for the first time is long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010246420 CN101913316B (en) | 2010-07-30 | 2010-07-30 | Door panel part and secondary drawing and punching method of door panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010246420 CN101913316B (en) | 2010-07-30 | 2010-07-30 | Door panel part and secondary drawing and punching method of door panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101913316A true CN101913316A (en) | 2010-12-15 |
| CN101913316B CN101913316B (en) | 2013-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010246420 Active CN101913316B (en) | 2010-07-30 | 2010-07-30 | Door panel part and secondary drawing and punching method of door panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101913316B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801624A (en) * | 2014-03-10 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Outside door panel die |
| CN107159770A (en) * | 2016-12-21 | 2017-09-15 | 泊头市兴达汽车模具制造有限公司 | A kind of drawing method for aluminium sheet product |
| CN108025344A (en) * | 2015-09-18 | 2018-05-11 | 新日铁住金株式会社 | Tabular products formed and its manufacture method |
| CN108971340A (en) * | 2018-07-23 | 2018-12-11 | 泊头市兴达汽车模具制造有限公司 | A kind of process solving the sliding of cover outside plate crest line |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190532A (en) * | 1988-01-27 | 1989-07-31 | Toyota Motor Corp | Manufacture of pressed door panel for automobile |
| JPH10277683A (en) * | 1997-04-01 | 1998-10-20 | Toyota Motor Corp | Press forming method, forming method for automobile body and its construction |
| CN1342532A (en) * | 2001-10-09 | 2002-04-03 | 湖南大学 | Drawing die for forming metallic sheet by punching |
| US20090272171A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Method of designing and forming a sheet metal part |
-
2010
- 2010-07-30 CN CN 201010246420 patent/CN101913316B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190532A (en) * | 1988-01-27 | 1989-07-31 | Toyota Motor Corp | Manufacture of pressed door panel for automobile |
| JPH10277683A (en) * | 1997-04-01 | 1998-10-20 | Toyota Motor Corp | Press forming method, forming method for automobile body and its construction |
| CN1342532A (en) * | 2001-10-09 | 2002-04-03 | 湖南大学 | Drawing die for forming metallic sheet by punching |
| US20090272171A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Method of designing and forming a sheet metal part |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801624A (en) * | 2014-03-10 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Outside door panel die |
| CN103801624B (en) * | 2014-03-10 | 2016-03-16 | 安徽江淮汽车股份有限公司 | A kind of door skin mould |
| CN108025344A (en) * | 2015-09-18 | 2018-05-11 | 新日铁住金株式会社 | Tabular products formed and its manufacture method |
| CN107159770A (en) * | 2016-12-21 | 2017-09-15 | 泊头市兴达汽车模具制造有限公司 | A kind of drawing method for aluminium sheet product |
| CN108971340A (en) * | 2018-07-23 | 2018-12-11 | 泊头市兴达汽车模具制造有限公司 | A kind of process solving the sliding of cover outside plate crest line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101913316B (en) | 2013-08-07 |
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