CN202555724U - Variable-strength thermal stamping workpice shaping die - Google Patents
Variable-strength thermal stamping workpice shaping die Download PDFInfo
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- CN202555724U CN202555724U CN 201120393429 CN201120393429U CN202555724U CN 202555724 U CN202555724 U CN 202555724U CN 201120393429 CN201120393429 CN 201120393429 CN 201120393429 U CN201120393429 U CN 201120393429U CN 202555724 U CN202555724 U CN 202555724U
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Abstract
An automobile structural member, on one hand, needs high strength to guarantee bumping safety and on the other hand needs relatively low strength and relatively high tenacity to achieve high comprehensive performances so as to absorb energy in order to achieve relatively good comprehensive protecting functions. Some conventional structural members have consistent integral performances which can not satisfy the actual-use requirements while some are formed in a spliced way to achieve performance diversity but the process is complex and the bonding parts have performances hazards. According to the different requirements on local performances of parts, the utility model designs a thermal stamping die having different cooling efficiency modules and applied for manufacturing automobile body protecting structural members characterized by high performances, lightness and low cost. The die related in the utility model and applied for shaping variable-strength thermal stamping workpieces only has cooling pipelines in certain die insert blocks or has the position, the size and the arrangement of each branch block cooling pipeline designed in a distinguished way according to performance requirements. Thermal stamping structural members produced by the die, for example, B-column reinforcing plates make the overall weight of original parts reduced, enhance the automobile capability of resisting side bumping and deformation and meanwhile relatively greatly absorb the bumping energy.
Description
Technical field
The present invention relates to the drop stamping field, the hot stamping die that is specifically related to can be made and a kind ofly can guarantee vehicle safety, can improve the structural strength and the effective part of energy-absorbing again.
Background technology
Automobile lightweight and security become the forward position and the focus of 21 century automotive engineering.Research shows that if vehicle complete vehicle weight reduces by 10%, fuel efficiency can improve 6%～8%.Since the oil shock of 1973 crisis, the automobile lightweight progressively comes into one's own, but safe, comfortable, intelligent needs cause especially passenger car deadweight fluctuation up and down of automobile, and along with material and improvement of Manufacturing Technology, the automobile loss of weight just is able to continuous realization.The automobile lightweight for energy savings, reduce toxic emission, realize that the Domestic Automotive Industry sustainable development is very important.
Automobile structure need have high strength to guarantee collision safety, needs relatively low intensity and high relatively toughness to realize that high combination property to reach energy-absorbing function, realizes integrated protection function preferably simultaneously at specific position.For complex structural member, like automobile B-column, A post etc., its mechanical property especially intensity is influence its effect basic; Because automobile side does not have air bag, when side impact took place, the B post need have concurrently crashproof and double effects energy-absorbing; Be the intensity difference to some extent of the each several part of B column reinforcement plate, and the B column reinforcement plate that tradition is made is the overall structure that is formed by the same uniform punching of the steel plate of thickness, this structure fabrication is simple; Can guarantee the whole planarization and the dimensional accuracy of part preferably; But steel plate thickness is by the required maximum thickness design of intensity, therefore be unfavorable for the lightweight of vehicle body, and the energy-absorbing effect of B post is relatively poor.
Existing automobile grow degree B column reinforcement plate mainly comprises following three kinds of forms:
The one, section adopts the steel plate of different-thickness to be formed separately before and after the B column reinforcement plate; Fraction block structure through being made of welded connection then; This structure makes moderate progress aspect body lightening; But increased the quantity and the processing capacity of part, and the flatness of piece surface can't guarantee that parts size precision also can reduce.
The 2nd, B column reinforcement plate blank adopts the mode of butt joint welding and laser spot welding to connect by the steel plate of different-thickness, and drawing B post can be realized lightweight then; Can guarantee the structural entity planarization, but complex process, poor processability; Manufacturing cost is high, and the welding position structure property is relatively poor.
The 3rd, a kind of variable cross-section B column reinforcement plate that patent ZL201020574844.4 mentions, this structure needs in advance plate to be rolled to become to need thickness, through hot press-formed, processes the variable cross-section part.This method needs a kind of special rolling mill, has increased the drip molding cost of manufacture.
More than three kinds of B posts can't possess higher crashworthiness, energy-absorbing effect, lightweight and characteristic cheaply simultaneously; This paper proposes a kind of manufacturing process and mould of grow degree heat-punch member; Be used to make localized heat shaping B post; This B post each several part intensity is difference to some extent, can play good crashworthiness and energy-absorbing effect, guarantees light-weightedly to have reduced manufacturing cost than variable cross-section B post simultaneously.
Summary of the invention
Existing structural member or overall performance are consistent, can't reach actual instructions for use, or realize performance difference with connecting method, complex procedures, and there is the performance secret worry in the junction.The invention provides a kind of shaping dies of grow degree heat-punch member; Can make high-performance drop stamping part; It is high to have solved existing part manufacturing cost, and problems such as complex process have realized the integrated of lightweight, security, economy and higher energy-absorbing effect that part is used.
The shaping dies of a kind of grow degree heat-punch member that the present invention relates to has only specific mould piecemeal to contain cooling pipe; Perhaps each piecemeal cooling pipe position, size, arrange and distinguish design according to performance requirement; Hot forming structural member of producing such as B column reinforcement plate have alleviated the overall weight of former part; Promoted automobile and resisted the side impact deformation ability, the while is the absorbing impact energy better.
Above-mentioned purpose implementation method of the present invention is an example with car door B post, and accompanying drawings is following, and mould is example with the die in the accompanying drawing.
Consider the main effect of automobile B-column---effective anti-bending strength and energy-absorbing effect, according to numerical simulation result and practical experience, the automobile B-column of a kind of local cooling that the present invention proposes; Raw material use the super-high strength steel plate, adopt hot press-formed technology, and drip molding each several part mechanical property is difference to some extent; Be divided into four ranks, B post upper end mechanical property is best, like 1 part among the figure; Tensile strength is more than 1500MPa, and the lower end mechanical property is the poorest, like 3,4 parts among the figure; More than the about 600 ~ 800MPa of tensile strength, mechanical property is between the two taken second place, like 2 parts among the figure; Tensile strength is between 1000 ~ 1200MPa, and the tensile strength between the different parts belongs to the gradual change form, helps the whole serviceability of B post.
The hot stamping forming die that the present invention relates to is that local improvement is carried out on the basis with the traditional hot diel; The traditional hot press forming die generally is all to be furnished with cooling pipe under the whole part profile; The automobile B-column each several part mechanical property that the present invention relates to differs, and corresponding hot stamping die only needs local cooling, is a kind of shaping dies of grow degree heat-punch member; Hot stamping die piecemeal process and assemble specifically; Contain punch piecemeal and die piecemeal, it is characterized in that, said mould piecemeal comprises to be arranged cooling pipe mould piecemeal and not to arrange cooling pipe mould piecemeal; Pipe arrangement mode in the mould piecemeal is set according to the drip molding mechanical property requirements; The shaping dies of a kind of grow degree heat-punch member that the present invention relates to, its characteristic also are the first die piecemeal (5) layout cooling pipe, and the first corresponding with it punch piecemeal is also arranged cooling pipe; The second die piecemeal (6) is arranged cooling pipe, and the second corresponding with it punch piecemeal is not arranged cooling pipe; The 3rd die piecemeal (7) is not arranged cooling pipe with the 4th die piecemeal (8), and corresponding with it the 3rd punch piecemeal and the 4th punch piecemeal are not also arranged cooling pipe.Cooling pipe of the present invention (9) is consistent with traditional hot punching press cooling pipe.
The hot forming part that the hot stamping die that the present invention proposes is produced can significantly alleviate the overall weight of automobile B-column stiffener, reaches the purpose of body lightening, has good energy-absorbing effect simultaneously, and has promoted automotive side face collision safety property.
Description of drawings
Fig. 1 is the different B-pillar structure figure of a kind of each several part mechanical property;
Fig. 2 is the front view of the drop stamping B post mold die of local cooling;
Fig. 3 is the drop stamping B post mold die normal axomometric drawing of local cooling;
Fig. 4 is die piecemeal 7 sketch mapes.
Among Fig. 1: 1 is B post mechanical property highest point, and 3,4 is B post mechanical property highest point, the B post mechanical property at 2 places between 1 (4) locate and 3 places between;
Fig. 2 (3) comprises the first die piecemeal 5, the second die piecemeal 6, the 3rd die piecemeal 7 and the 4th die piecemeal 8;
9 is cooling pipe among Fig. 4.
The specific embodiment
According to accompanying drawing the utility model is further done explanation below.
The requirement of B post different piece mechanical property difference is divided into four ranks among Fig. 1, and B post upper end mechanical property is best; Like 1 part among the figure, tensile strength is more than 1500MPa, and the lower end mechanical property is the poorest; Like 3,4 parts among the figure, more than the about 650 ~ 750MPa of tensile strength, mechanical property is between the two taken second place; Like 2 parts among the figure, tensile strength is between 1100 ~ 1200MPa.According to this requirement, design local heat of cooling diel, its die such as Fig. 2 and shown in Figure 3, in the hot stamping die, the first die piecemeal (5) is arranged cooling pipe, the first corresponding with it punch piecemeal is also arranged cooling pipe; The second die piecemeal (6) is arranged cooling pipe, and the second corresponding with it punch piecemeal is not arranged cooling pipe, and the cooling pipe (9) in the second die piecemeal (6) does not have the cooling pipe (9) in the first die piecemeal 5 to arrange intensive; The 3rd die piecemeal (7) is not arranged cooling pipe with the 4th die piecemeal (8), and corresponding with it the 3rd punch piecemeal and the 4th punch piecemeal are not also arranged cooling pipe.Mold cools down pipe arrangement mode is as shown in Figure 4, adopts the straight-through cooling pipe of circular hole, is convenient to processing, practices thrift cost, also can contain the independent water circulation of mould piecemeal of cooling pipe preferably with type simultaneously.
The B post drip molding that utilizes this mould to make satisfies energy-absorbing and requires and crashproof requirement; Tensile strength is changed to gradual change type between the adjacent regions; Be the tensile strength gradual change between 1200MPa ~ 1500MPa between B post 1 part and 2 parts, the tensile strength gradual change between 750MPa ~ 1100MPa between B post 2 parts and 3 parts.
Claims (2)
1. the shaping dies of a grow degree heat-punch member, mould piecemeal process and assemble contains punch piecemeal and die piecemeal, it is characterized in that, and said mould piecemeal comprises to be arranged cooling pipe mould piecemeal and not to arrange cooling pipe mould piecemeal.
2. the shaping dies of a kind of grow degree heat-punch member according to claim 1 is characterized in that the first die piecemeal (5) layout cooling pipe, and the first corresponding with it punch piecemeal is also arranged cooling pipe; The second die piecemeal (6) is arranged cooling pipe, and the second corresponding with it punch piecemeal is not arranged cooling pipe; The 3rd die piecemeal (7) is not arranged cooling pipe with the 4th die piecemeal (8), and corresponding with it the 3rd punch piecemeal and the 4th punch piecemeal are not also arranged cooling pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120393429 CN202555724U (en) | 2011-10-17 | 2011-10-17 | Variable-strength thermal stamping workpice shaping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120393429 CN202555724U (en) | 2011-10-17 | 2011-10-17 | Variable-strength thermal stamping workpice shaping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202555724U true CN202555724U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120393429 Expired - Fee Related CN202555724U (en) | 2011-10-17 | 2011-10-17 | Variable-strength thermal stamping workpice shaping die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202555724U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232255A (en) * | 2014-07-18 | 2016-12-14 | 宝马股份公司 | For manufacturing the mould of hot formed member |
| CN111589920A (en) * | 2020-05-11 | 2020-08-28 | 首钢集团有限公司 | Hot stamping method |
| CN111940585A (en) * | 2020-07-15 | 2020-11-17 | 大连理工大学 | Performance regulation and control method for high-strength aluminum alloy thin shell ultralow-temperature forming process |
-
2011
- 2011-10-17 CN CN 201120393429 patent/CN202555724U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232255A (en) * | 2014-07-18 | 2016-12-14 | 宝马股份公司 | For manufacturing the mould of hot formed member |
| CN111589920A (en) * | 2020-05-11 | 2020-08-28 | 首钢集团有限公司 | Hot stamping method |
| CN111940585A (en) * | 2020-07-15 | 2020-11-17 | 大连理工大学 | Performance regulation and control method for high-strength aluminum alloy thin shell ultralow-temperature forming process |
| CN111940585B (en) * | 2020-07-15 | 2021-09-28 | 大连理工大学 | Performance regulation and control method for high-strength aluminum alloy thin shell ultralow-temperature forming process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20191017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |