CN106270219B - A kind of commercial car longitudinal beam die face design technique - Google Patents
A kind of commercial car longitudinal beam die face design technique Download PDFInfo
- Publication number
- CN106270219B CN106270219B CN201611003801.9A CN201611003801A CN106270219B CN 106270219 B CN106270219 B CN 106270219B CN 201611003801 A CN201611003801 A CN 201611003801A CN 106270219 B CN106270219 B CN 106270219B
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- mould
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- upper mould
- product piece
- longitudinal beam
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 210000001015 abdomen Anatomy 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Abstract
The present invention relates to a kind of commercial car longitudinal beam die face design technique, including the modified technique to the modified technique of upper mould, the modified technique of retainer template and lower mould.The technical program technology key point is that upper die and lower die design step in the outside of belly, realizes key position pier extremely and suppresses, backseat empty avoiding, and reduction mould is ground and rate requirement, while aerofoil resilience is implemented to compensate；Residual stress of the upper mould after variable cross-section Position Design water droplet moulding, balance both sides shaping；Upper mould and holding pad Contrary compensation at variable cross-section, reduce outside of belly distortion；Many places guide plate is designed, ensures mould guiding accuracy.In the case where product design determines, the optimization of quality and cost is obtained.
Description
Background technology
The invention belongs to mold design field, particularly relates to a kind of commercial car longitudinal beam mould machine design technology.
Background technology
The fuel price to rise steadily, user is forced increasingly to focus on the fuel economy of commercial car, current medium and heavy business
Yield strength is used as 510Mpa, 590Mpa, 610Mpa or the high-strength steel material of greater degree with underbody disc portion is more and more,
And the larger resilience problem of high-strength steel is limited by, unimach vehicle frame is present than more serious resilience, distortion at present, causes to hang
There are the serious quality problems such as sideslip in extension system.
As shown in Figure 1 to Figure 3, by taking certain commercial car longeron as an example, including the outside of belly 02 and aerofoil 04, longeron size are
6700mm*184mm*154mm, moulding are complicated, exist many places variable cross-section 01, two-stage step 003, and the material rate used compared with
Height, for 6mm B510L hot rolled plates, yield strength 510Mpa.
Detected by batch production, the product has serious resilience and distortion, and numerical fluctuations are big, uniformity extreme difference.
It is less than the passenger car stamping parts within 3mm and part length 3000mm, generally three processes or more for thickness,
Wherein for may resilience position increase side trimming, and require that mould is ground and rate more than 85%.
Commercial vehicle carriage length is larger, and die cost is very high, and general procedure is all controlled in two-step, such as increases side shaping work
Sequence, its increased die cost are higher.
Commercial car forcing press limited amount, is limited by its production capacity, and longeron process is typically required within two-step, is such as increased
Side trimming, then production capacity can not meet throughput requirements, and production cost increase is more.
For commercial vehicle carriage mould in more than 9000mm, the current country possesses the numerical control device of its processing and the mould of debugging lathe
It is considerably less to have factory's resource, and mould is ground and difficulty is ground and required, it is necessary to reduce mould as far as possible.
The content of the invention
It is an object of the invention to provide a kind of commercial car longitudinal beam die face design technique, to solve prior art to reach
The problem of quality of product needs to increase side trimming.
It is another object of the present invention to reduce mould is ground and rate requirement, reduce the requirement to equipments machining die.
Third object of the present invention is that solve longitudinal beam stamping parts outside of belly warpage, the distortion of the longitudinal beam stamping parts outside of belly
And longitudinal beam stamping parts aerofoil resilience problem.
The present invention is achieved by the following technical solutions：
A kind of commercial car longitudinal beam die face design technique, including modified technique, the improvement work of retainer template to upper mould
The modified technique of skill and lower mould；
The modified technique of the upper mould includes：
1) side relative at the variable cross-section of upper mould sets two droplet-shaped bulge-structures；
2) the bottom surface center section of the upper mould sets local empty avoiding, the non-empty avoiding part in bottom surface and the retainer mould of the upper mould
Plate contacts；
3) pier is done at the R angles of mould longitudinal cross-section on described extremely to handle；
4) product piece is relatively shorter than at the R angles of the upper mould cross section, to provide the rebound compensation amount of the product piece；
5) moding section does Contrary compensation design on described, to mitigate product piece distortion problem；
The modified technique of the retainer template includes：
A) step design is done in the cross section of the retainer template, is compensated with being formed to aerofoil R angles, mitigates aerofoil resilience；
B) Contrary compensation design is done in the retainer template variable cross-section part, to mitigate the product piece distortion problem；
C it is the product piece that) upper mould, which corresponds to step lateral separation, described in step distance described in the retainer template cross section
Thick twice of material, and angle benefit is carried out to aerofoil resilience in the aerofoil of the product piece with the step collective effect of the upper mould
Repay；
D) the retainer template longitudinal cross-section is consistent with the product piece；
The lower mould modified technique includes：
10) be provided with the relative side of the variable cross-section of the lower mould with it is described on droplet-shaped bulge-structure on mould one by one
Corresponding droplet-shaped bulge-structure；
20) the lower mould mo(u)ld top half face longitudinal direction section and the bottom surface of the product piece are consistent；
30) the lower mould transverse direction section sets 45 degree of slopes.
The highest point of the droplet-shaped bulge-structure is 7mm.
Two side corner sections of the upper mould do chamfered.
The extremely processing of pier at the R angles of the upper mould longitudinal cross-section be by the empty avoiding at the R angles be step it is poly- 2) in it is local
The half of empty avoiding amount.
Also include to the guiding between the upper mould and the lower mould, the retainer template and the lower mould and positioning, increase
Add retainer template in the anti-flipper guide of longitudinal direction.
The beneficial effects of the invention are as follows：
The technical program technology key point is that upper die and lower die design step in the outside of belly, realizes that key position pier is extremely and strong
Pressure, backseat empty avoiding, reduction mould is ground and rate requirement, while aerofoil resilience is implemented to compensate；Upper mould is set in variable cross-section position
Count water droplet moulding, the residual stress after the shaping of balance both sides；Upper mould and holding pad Contrary compensation at variable cross-section, reduce the outside of belly and turn round
It is bent；Many places guide plate is designed, ensures mould guiding accuracy.In the case where product design determines, the optimal of quality and cost is obtained
Change.
Brief description of the drawings
Fig. 1 is the top view of longitudinal beam；
Fig. 2 is the side view of longitudinal beam；
Fig. 3 is the axonometric drawing of longitudinal beam；
Fig. 4 is mould structure schematic diagram；
Fig. 5 is that upper mould is designed with droplet-shaped bulge-structure and enlarged drawing；
Fig. 6 is upper mould cross section step enlarged drawing；
Fig. 7 is upper mould longitudinal cross-section R angles enlarged drawing；
Fig. 8 is upper mould cross section step enlarged drawing；
Fig. 9 is binder template cross section step enlarged drawing；
Figure 10 is lower mould and droplet-shaped bulge-structure enlarged drawing；
Figure 11 is lower mould longitudinal direction sectional drawing；
Figure 12 is lower mould cross-sectional view.
Description of reference numerals
01 variable cross-section, 02 outside of belly, 03 step, 04 aerofoil, mould on 1,2 times moulds, 3 retainer templates.
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
Analyzed according to prior art, commercial car longitudinal beam is because die size is big, and mould is ground and difficult, longeron product
Fillet (i.e. R angles), at this for the step of longeron at, include two R angles at each step, the resilience shadow at the R angles to longeron
Maximum is rung, it is necessary to being suppressed at R angles；In addition, longeron both sides Stress non-homogeneity at all variable cross-sections of longeron, is molded floor side member
It is distorted under interior stress.
The application provides a kind of commercial car longitudinal beam die face design technique, including modified technique to upper mould, retainer mould
The modified technique of the modified technique of plate and lower mould.
The modified technique of the upper mould includes：
1) side relative at the variable cross-section of upper mould 1 sets two droplet-shaped bulge-structures；The variable cross-section of upper mould herein
Refer to mould in converted products part, product piece longeron includes the outside of belly and the aerofoil of outside of belly both sides, refers to the outside of belly at variable cross-section
Width changes, meanwhile, cause a flank face therein to change, and the aerofoil of the side relative with the aerofoil of the change
Two droplet-shaped bulge-structures are set on upper mould corresponding to described, in the present embodiment, longeron is shared at two at variable cross-section, each
One droplet-shaped bulge-structure is set at variable cross-section, certainly, if longeron includes variable cross-section at three, three water are set on upper mould
Droplet-shaped bulge-structure.
In the present embodiment, droplet-shaped bulge-structure play solve longeron both sides because residual stress differs greatly and caused by torsion
Qu Wenti, in this application, the highest point of droplet-shaped bulge-structure is about 7mm.
2) the bottom surface center section of the upper mould sets local empty avoiding, the non-empty avoiding part in bottom surface and the retainer mould of the upper mould
Plate contacts；In this application, empty avoiding is that the part does not contact with plate or lower mould, but has certain gap, in the present embodiment
In, the local empty avoiding of upper mould bottom surface is highly 1mm, and face width 18mm is suppressed in non-empty avoiding part with retainer template, in addition upper mould bottom
Two side corner sections in face do chamfering to mitigate impression.
3) pier is done at the R angles of mould longitudinal cross-section on described extremely to handle；Pier at the R angles of the upper mould longitudinal cross-section is extremely located
Manage for by the empty avoiding at the R angles be step it is poly- 2) in local empty avoiding amount half.So when carrying out punching press, because being kept away at R angles
Ullage is from the 1mm empty avoidings less than upper mould bottom surface, i.e. empty avoiding at the R angles is 0.5mm, and in forming process, R angles are protected with retainer plate
It is dead to hold pier, is ground and rate requirement so as to reduce mould, while plate is by three-dimensional compressive stress at this, and warpage is smaller and uniformity is preferable.
4) being relatively shorter than product piece at the R angles of the upper mould cross section is, to provide the rebound compensation amount of the product piece；
In this application, it is smaller 0.5nn than product piece at the R angles of upper mould cross section, i.e., R angles rebound compensation amount at this.
5) moding section is local Contrary compensation design, offset 5mm, to mitigate product piece distortion on described
Problem.
The modified technique of the retainer template 3 includes：
A) step design is done in the cross section of the retainer template, shoulder height 0.5mm, is compensated with being formed to aerofoil R angles,
Mitigate aerofoil resilience.
B) Contrary compensation design is done in the retainer template variable cross-section part, offset 5mm, is turned round with mitigating the product piece
Qu Wenti；
C it is the product piece that) upper mould, which corresponds to step lateral separation, described in step distance described in the retainer template cross section
Thick twice of material, and angle benefit is carried out to aerofoil resilience in the aerofoil of the product piece with the step collective effect of the upper mould
Repay；In the present embodiment, mould corresponds to step transverse direction 12mm in the step distance of retainer template cross section, i.e. twice of material is thick, with 0.5mm
High step collective effect carries out angle compensation in longitudinal beam aerofoil to aerofoil resilience.
D) the retainer template longitudinal cross-section is consistent with the product piece；
The modified technique of lower mould 2 includes：
10) be provided with the relative side of the variable cross-section of the lower mould with it is described on droplet-shaped bulge-structure on mould one by one
Corresponding droplet-shaped bulge-structure；With the droplet-shaped bulge-structure for closing mould, produced with solving both sides because residual stress differs greatly
Raw distortion problem, water droplet highest point about 7mm.
20) the lower mould mo(u)ld top half face longitudinal direction section and the bottom surface of the product piece are consistent；Mitigate longeron stamping parts
Wrinkle and be thinned
30) the lower mould transverse direction section sets 45 degree of slopes, so as to mitigate plate plucking, while mitigates aerofoil warpage.
Also include to the guiding between the upper mould and the lower mould, the retainer template and the lower mould and positioning, increase
Add retainer template in the anti-flipper guide of longitudinal direction.
The equipments machining die and production equipment limitation of current commercial car longitudinal beam are taken into full account, is reduced to mould
Digit Control Machine Tool demand needed for processing, reduces the demand to production equipment such as forcing press, and ensure that the quality of longitudinal beam
And required precision.
It the above is only the description of the preferred embodiment of the present invention, it is noted that due to the finiteness of literal expression, and
Unlimited concrete structure objectively be present, for those skilled in the art, do not departing from the principle of the invention
On the premise of, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
- A kind of 1. commercial car longitudinal beam die face design technique, it is characterised in that：Including the modified technique to upper mould, retainer template Modified technique and lower mould modified technique；The modified technique of the upper mould includes：1) side relative at the variable cross-section of upper mould sets two droplet-shaped bulge-structures；2) the bottom surface center section of the upper mould sets local empty avoiding, and the non-empty avoiding part in bottom surface of the upper mould connects with retainer template Touch；3) pier is done at the R angles of mould longitudinal cross-section on described extremely to handle；4) product piece is relatively shorter than at the R angles of the upper mould cross section, to provide the rebound compensation amount of the product piece；5) moding section does Contrary compensation design on described, to mitigate product piece distortion problem；The modified technique of the retainer template includes：A) step design is done in the cross section of the retainer template, is compensated with being formed to aerofoil R angles, mitigates aerofoil resilience；B) Contrary compensation design is done in the retainer template variable cross-section part, to mitigate the product piece distortion problem；C) it is thick for the product piece material to correspond to step lateral separation for upper mould described in step distance described in the retainer template cross section Twice, and angle compensation is carried out to aerofoil resilience in the aerofoil of the product piece with the step collective effect of the upper mould；D) the retainer template longitudinal cross-section is consistent with the product piece；The lower mould modified technique includes：10) be provided with the relative side of the variable cross-section of the lower mould with it is described on droplet-shaped bulge-structure on mould correspond Droplet-shaped bulge-structure；20) the lower mould mo(u)ld top half face longitudinal direction section and the bottom surface of the product piece are consistent；30) the lower mould transverse direction section sets 45 degree of slopes.
- 2. commercial car longitudinal beam die face design technique according to claim 1, it is characterised in that：The droplet-shaped is raised The highest point of structure is 7mm.
- 3. commercial car longitudinal beam die face design technique according to claim 1, it is characterised in that：The both sides of the upper mould Do chamfered in corner.
- 4. commercial car longitudinal beam die face design technique according to claim 1, it is characterised in that：The upper mould is longitudinally cut The extremely processing of pier at the R angles in face be by the empty avoiding at the R angles be step it is poly- 2) in local empty avoiding amount half.
- 5. commercial car longitudinal beam die face design technique according to claim 1, it is characterised in that：Also include on described Guiding and positioning between mould and the lower mould, the retainer template and the lower mould, increase retainer template is in the anti-side of longitudinal direction Guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611003801.9A CN106270219B (en) | 2016-11-15 | 2016-11-15 | A kind of commercial car longitudinal beam die face design technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611003801.9A CN106270219B (en) | 2016-11-15 | 2016-11-15 | A kind of commercial car longitudinal beam die face design technique |
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| CN106270219A CN106270219A (en) | 2017-01-04 |
| CN106270219B true CN106270219B (en) | 2018-02-13 |
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| CN110155175B (en) * | 2019-05-24 | 2020-08-28 | 安徽江淮汽车集团股份有限公司 | Frame and vehicle |
| CN112157174B (en) * | 2020-09-14 | 2023-02-17 | 一汽解放汽车有限公司 | Variable cross-section longitudinal beam pre-bending die and variable cross-section longitudinal beam pre-bending device |
| CN113198941B (en) * | 2021-04-29 | 2022-02-25 | 安徽江淮汽车集团股份有限公司 | Solebar forming die and forming process |
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| KR100804962B1 (en) * | 2006-12-19 | 2008-02-20 | 주식회사 포스코 | Equipment for measuring of twisting spring-back |
| JP4879812B2 (en) * | 2007-04-24 | 2012-02-22 | 新日本製鐵株式会社 | Press molding method with excellent shape freezing |
| CN102172733B (en) * | 2010-12-21 | 2013-06-05 | 江铃汽车股份有限公司 | Process for removing torsion springback in formation of longitudinal beam by using local deformation |
| CN102974688B (en) * | 2011-09-05 | 2014-12-03 | 北汽福田汽车股份有限公司 | Longitudinal member female die and longitudinal member manufacturing method |
| CN104226853B (en) * | 2013-06-08 | 2017-08-04 | 北汽福田汽车股份有限公司 | Automobile longitudinal girder shaping and punching process |
| US10239105B2 (en) * | 2013-11-28 | 2019-03-26 | Nippon Steel & Sumitomo Metal Corporation | Blank steel plate, production method and production device therefor, and production method for press-formed product using blank steel plate |
| JP6083418B2 (en) * | 2014-06-19 | 2017-02-22 | Ｊｆｅスチール株式会社 | Press forming method |
| CN204799799U (en) * | 2015-07-16 | 2015-11-25 | 周亚琪 | Light -duty solebar variable cross section forming die |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: ANHUI JIANGHUAI AUTOMOBILE Co.,Ltd. |
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Granted publication date: 20180213 |