CN101972814A - Ultra-high strength steel hot-stamping die for car door anticollision beam - Google Patents
Ultra-high strength steel hot-stamping die for car door anticollision beam Download PDFInfo
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- CN101972814A CN101972814A CN 201010517970 CN201010517970A CN101972814A CN 101972814 A CN101972814 A CN 101972814A CN 201010517970 CN201010517970 CN 201010517970 CN 201010517970 A CN201010517970 A CN 201010517970A CN 101972814 A CN101972814 A CN 101972814A
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Abstract
The invention provides a hot-stamping die for an anticollision beam, comprising an upper die and a lower die, wherein the upper and lower dies mainly comprise combined convex/concave dies, cooling systems and a cooling seal ring. The blocks of the combined convex/concave dies avoid the corners and are staggered relatively. The cooling systems adopt drill holes, wherein the diameter of the holes is 8-30mm and the peaks of the holes are 3-10mm distant from the profiles; the two ends of the holes are sealed after hole drilling; runway type water troughs are processed near the places where the block dies are 10-50mm distant from the two end faces; the cooling water enters from one water trough and flows out of the other water trough; and seal grooves are arranged on the cooling water troughs and the cooling water troughs are provided with the seal ring and are externally connected with cooling water pipes.
Description
Technical field:
The present invention relates to a kind of super-high strength steel door anti-collision joist hot stamping die, belong to field of hot stamping forming.
Background technology:
Along with the development of Domestic Automotive Industry and the increase of automobile pollution, traffic accident is ascendant trend significantly, wherein the accident ratio and the casualties of side impact initiation all occupy first, the accident that causes accounts for about 32% of total amount, and the casualties number that causes accounts for 30.1% of total number of casualties.Automotive side face collision safety is one of of paramount importance vehicle performance index of automobile, enough spaces that the side does not have front portion and rear portion to have are out of shape with recurring structure and the absorption collision energy, automobile side is the weak position of intensity in the car body, if the car door distortion can not be opened, occupant's life security will be jeopardized seriously.Optimize the collision prevention girders structure, improve its intensity, improve automotive side face collision safety, will improve occupant's security protection.
At present, the door anti-collision joist form is different, and manufacture method mostly is cold forming, and intensity is not high, and high strength and superhigh intensity are the developing direction of door anti-collision joist.Punching press is ftractureed easily under the high-strength steel sheet normal temperature, and resilience is serious, and can not realize that performance reaches the above requirement of strength of 1500MPa.The unimach heat-punch member can reach high strength, high forming accuracy, can improve automotive side face collision safety greatly, and the consumption in the vehicle manufacturing industry has significantly year by year to be increased.
Summary of the invention:
The car door anti-collision beam strength is not high to be difficult to solve requirements such as the resilience of unimach door anti-collision joist is serious, forming accuracy is not high, be prone to crackle, intensity can not meet the demands with cold punching technology in order to solve, the present invention is according to heat treatment and drawing principle, the stamped steel plate is heated to the above temperature of austenitizing and is incubated appropriate time, carry out drawing then, realize that stamping parts is shaped and quenching integrated metallization processes, make stamping parts intensity reach the above high strength of 1500MPa, the invention provides a kind of super-high strength steel door anti-collision joist hot stamping die.Bottom elaborates to the door anti-collision joist hot stamping die.
Door anti-collision joist of the present invention prepares mould and comprises upper die and lower die.Described patrix chief component has combined heave die, cooling system, sealing ring, guide pillar, punch installing plate, goes up installing rack; Described counterdie chief component has combined die, cooling system, seal groove, guide pin bushing, die installing plate, following installing rack, plate positioner.
Wherein the piecemeal of combined heave die and combined die should be to avoid the turning, and the assurance forming process carries out optimizing simultaneously the cooling effect of cooling system smoothly.
Cooling system adopts cooling hole mode, processing cooling hole water channel, bore dia 8～30mm, hole vertex distance profile 3～10mm; The boring back is sealed at both ends in the hole, processing the racetrack tank apart from both ends of the surface 10～50mm position near the piecemeal mould, in order to be communicated with each cooling pipe; Cooling water enters from a tank, is flowed out by another tank.For further optimizing cooling effect, the cooling water flow that makes combination concave, convex mould is on the contrary, be the entry of die module cooling water, water outlet, the water inlet of the corresponding punch corresponding module cooling water of delivery port difference, further optimize the drip molding cooling effect and improve the drip molding quality.
Combination concave, convex mould mainly plays the shaping effect, makes the steel plate blank become forming quality behind punching course and performance meets the requirements of stamping parts.The concave, convex mold mounting plate mainly plays combination concave, convex mould module to be installed, and each module is connected with the concave, convex mold mounting plate by bolt, forms whole; At bosh opposite position place processing seal groove, built-in sealing ring plays the cooling system sealing; And offer the external hole of cooling water pipe, be used for external cooling water pipe.Upper and lower installing rack also need guarantee the space that is provided with of cooling pipe except that playing being connected the effect of upper and lower mould and hydraulic press.Guide pillars and bushes play in mould motion guide and the mould installation process centering effect.The plate positioner is used for the location of punching press steel plate, makes plate be in correct stamping position in mould.
The invention has the beneficial effects as follows:
(1) drip molding intensity height.Stamping parts tensile strength can reach more than the 1500MPa, can improve the intensity of door anti-collision joist, can alleviate its weight again, has double dominant.
(2) forming accuracy height.Drip molding does not have resilience substantially, and the less springback compensation of design can be eliminated the resilience of drip molding fully in die design process.
(3) save number of molds and cost, shortening single-piece work man-hour.During cold stamping, single stamping parts needs a plurality of or the multistation mould, repeatedly punching press is to finish final shaping, and die cost is higher, and required machining period is longer.The drop stamping door anti-collision joist only needs mould, a single punching press can satisfy forming requirements, has significantly reduced number of molds and cost, has shortened machining period.
(4) the drip molding surface quality is good.Used antioxidizing paint makes steel plate not oxidized in heating and forming process, and the drip molding surface quality is better.
(5) preparation speed is fast.The curring time of each door anti-collision joist only need be cut edge after the shaping and can satisfy instructions for use less than 1min.
(6) applied widely.The method of this preparation door anti-collision joist has extensive applicability by can the be shaped door anti-collision joist of different size and size of mold exchange more.
The advantage of this mould mainly contains following several respects:
(1) this mould adopts piecemeal thought.Can reach the purpose that improves die life, reduces die cost, makes the distance on cooling pipe and mold work surface be consistent as far as possible, make things convenient for mold cooling system to process like this.Mould concave, convex die worker selects the higher mold materials of performance for use as parts, and other structure parts are selected performance, ordinary steel that price is lower for use, can also play the purpose that the local damage parts are changed separately.The mould piecemeal makes that the layout of cooling system is more convenient, easily the distance on assurance cooling pipe and mold work surface is consistent as far as possible, cooling is even, effectively reduces the drip molding residual stress, avoids the generation of low intensity points, assurance is organized, performance is even, improves part quality; And the drilling depth when the piecemeal mould makes the processing cooling system shortens significantly, difficulty of processing reduces significantly.
(2) piecemeal of concave, convex mould is avoided the turning.Corner's steel plate deformed amount is big, and difficulty is shaped.The junction of assembling die is more coarse relatively, be unfavorable for being shaped, and the mould piecemeal is avoided the turning, makes to help carrying out smoothly of forming process in the difficult position of avoiding being shaped, the junction of mould.
(3) adopted the cooling system of special construction.The structure of mold cooling system is: the boring back is sealed at both ends in the hole earlier on the piecemeal mould, processing the racetrack tank apart from both ends of the surface 10～50mm position near the piecemeal mould, in order to be communicated with each cooling pipe; Cooling water enters from a tank, is flowed out by another tank.And corresponding water inlet of the cooling system of concave, convex mould and delivery port stagger mutually, to guarantee the uniformity of cooling.
(4) appropriate design the cooling system of mould.Not only dwindled widely mold temperature in the continuous use fluctuation, improved die life, and the serviceability temperature of strict control mould is lower than 200 ℃, guarantee carrying out smoothly of drip molding phase transition process, and then guaranteed the requirement of car door anti-collision beam strength.
(5) the Mould Machining manufacturing is simple relatively, and concave, convex mould cooling supporting block can adopt non-mould steel, shortening mould manufacturing time, reduction mould manufacturing expense; Mold materials and concave, convex mould cooled supports block of material are carried out antirust processing, improved the conformability to hot-forming die of mold materials.
The invention solves the problem that the shaping of cold stamping door anti-collision joist is difficult, intensity is not high; Avoided the problem that door anti-collision joist diel size is big, be not easy to offer and process cooling system; Reduce number of molds, saved die cost greatly; Shortened production man-hour; Improve the forming accuracy and the intensity of drip molding, greatly improved the performance of door anti-collision joist.
Description of drawings:
The novel collision prevention girders hot stamping die of Fig. 1
Fig. 2 mould explosive view
Fig. 3 die cooling system
Fig. 4 die installing plate
Among the figure: 1-collision prevention girders stamping parts; The 2-patrix; The 3-counterdie; The last installing rack of 4-; 5-punch installing plate; The 6-combined heave die; The 7-combined die; 8-die installing plate; Installing rack under the 9-; The 10-guide pin bushing; 11-plate positioner; The 12-guide pillar; The 13-cooling pipe; The 14-seal groove; The external hole of 15-cooling water pipe
The specific embodiment:
Below in conjunction with the explanation of case shown in accompanying drawing 1～accompanying drawing 4 super-high strength steel door anti-collision joist hot stamping die.
Door anti-collision joist of the present invention prepares mould and comprises patrix 2 and counterdie 3.Described patrix 2 main compositions have combined heave die 6, cooling system, sealing ring, guide pillar 12, punch installing plate 5, go up installing rack 4; Described counterdie is mainly formed combined die 7, cooling system, seal groove 14, guide pin bushing 10, die installing plate 8, installing rack 9, plate positioner 11 down.
In the accompanying drawing 1, carry out smoothly for guaranteeing forming process, make mould piecemeal position forming defects not occur, and for optimizing the cooling effect of cooling system, the piecemeal of combined heave die 6 and combined die 7 is all avoided the position, turning of drip molding, and the relative certain position that staggers with the corresponding sub-block of combined die 7 of combined heave die 6.
Combination concave, convex mould mainly plays the shaping effect, makes the steel plate blank become forming quality behind punching course and performance meets the requirements of stamping parts.The combined die module is identical with the cooling system structure of combined heave die module, is example explanation mold cooling system with the die module below.As shown in Figure 3, cooling system adopts cooling hole mode, processing cooling hole pipeline 18, bore dia 8mm, hole vertex distance profile 5mm; The boring back is sealed at both ends in the hole, processing the racetrack tank apart from both ends of the surface 15mm position near the piecemeal mould, in order to be communicated with each cooling pipe; Cooling water enters from a tank, is flowed out by another tank.And be further to optimize cooling effect, the entry of die module cooling water, water outlet, the water inlet of the corresponding punch corresponding module cooling water of delivery port difference are set.
The structure of concave, convex mold mounting plate is identical with effect, and following is the structure and the effect of example explanation concave, convex mold mounting plate with die installing plate 8.Die installing plate 8 mainly plays the combined die module to be installed, and each combined die module is connected with die installing plate 8 by bolt, forms whole; Process seal groove 14 in the position with racetrack bosh corresponding female mold mounting plate 8, built-in sealing ring is finished the sealing of mould inside cooling system and external refrigeration system.In the corresponding position of racetrack tank, offer the external hole 20 of cooling water pipe, as the interface of external refrigeration system.
Last installing rack 4 is used to install the moved cross beam of patrix 2 to hydraulic press, and following installing rack 9 is used to install the workbench of counterdie 3 to hydraulic press, and enough installing spaces are set on upper and lower installing rack in addition, is used for the installation of cooling pipe.Guide pillar 12 and guide pin bushing 10 are used for the centering that the mould installation process is carried out upper and lower mould, and in punching course, it plays the guide effect of patrix 2 motions.Plate positioner 11 takes angle steel to be fixed by bolts to the form of mould relevant position, is used for the location of punching press high temperature blank, is convenient to be in when plate is put into counterdie 3 correct position.
Preparation mould structure form of the present invention, solve large-scale, complicated die design of Cooling System, processing difficulties and inhomogeneous cooling, mould piecemeal joint and be prone to the be shaped problem of difficulty such as drawing crack, warpage, make the raising that is greatly improved of door anti-collision joist mechanical property, forming accuracy, increased substantially vehicle safety, and can alleviate vehicle weight, have important realistic price.
Claims (4)
1. super-high strength steel door anti-collision joist hot stamping die, this mould comprises upper die and lower die, it is characterized in that:
Described patrix chief component has combined heave die, cooling system, sealing ring, guide pillar, punch installing plate, goes up installing rack; Described counterdie chief component has combined die, cooling system, seal groove, guide pin bushing, die installing plate, following installing rack, plate positioner.
The effect of each parts of mould is as described below.Making up concavo-convex mould is the work parts of mould, plays the shaping effect.The concave, convex mold mounting plate mainly plays combination concave, convex mould to be installed, and makes each module connect into integral body by bolt.The place is provided with seal groove at the bosh opposite position, and built-in sealing ring seals, and is used for external cooling water pipe.Upper and lower installing rack also plays the effect of arranging cooling water pipe except that playing being connected the effect of mould and press.Guide pillars and bushes makes up that its mould leads up and down and the effect of centering.
2. the preparation mould of door anti-collision joist according to claim 1 is characterized in that the piecemeal of combined heave die and combined die should be avoided the turning, so that cooling effect is carried out and optimized to forming process smoothly;
3. the preparation mould of door anti-collision joist according to claim 1 is characterized in that cooling system adopts boring, bore dia 8～30mm, hole vertex distance profile 3～10mm; The boring back is sealed at both ends in the hole, processing the racetrack tank apart from both ends of the surface 10～50mm position near the piecemeal mould, in order to be communicated with each cooling pipe; Cooling water enters from a tank, is flowed out by another tank;
4. the preparation mould of door anti-collision joist according to claim 1, the cooling water flow that it is characterized in that making up the concave, convex mould is on the contrary, be the entry of die module cooling water, water outlet, the water inlet of the corresponding punch corresponding module cooling water of delivery port difference, further optimize the drip molding cooling effect and improve the drip molding quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010517970 CN101972814A (en) | 2010-10-25 | 2010-10-25 | Ultra-high strength steel hot-stamping die for car door anticollision beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010517970 CN101972814A (en) | 2010-10-25 | 2010-10-25 | Ultra-high strength steel hot-stamping die for car door anticollision beam |
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| CN101972814A true CN101972814A (en) | 2011-02-16 |
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| CN 201010517970 Pending CN101972814A (en) | 2010-10-25 | 2010-10-25 | Ultra-high strength steel hot-stamping die for car door anticollision beam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128174A (en) * | 2013-03-07 | 2013-06-05 | 沈阳化工大学 | Assembly die for cold stamping and forming of auto-body panels and design method of assembly die |
| CN107199277A (en) * | 2016-03-18 | 2017-09-26 | 现代自动车株式会社 | The method for carrying out trimming to superhigh intensity drop stamping steel plate using molding |
| CN107966365A (en) * | 2017-12-19 | 2018-04-27 | 宁波精乐汽车部件有限公司 | A kind of collision prevention girders solder joint destroys frock |
| CN110695214A (en) * | 2019-11-26 | 2020-01-17 | 霍修沛 | Double-layer water cooling mold for manufacturing automobile bumper by hot stamping mode |
| CN111468584A (en) * | 2020-03-31 | 2020-07-31 | 爱驰汽车有限公司 | Die for manufacturing anti-collision main beam, manufacturing method of anti-collision main beam and anti-collision beam |
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| CN101773967A (en) * | 2010-02-09 | 2010-07-14 | 机械科学研究总院先进制造技术研究中心 | High-strength steel plate stamping and forming die based on variable blank-holder force control |
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Patent Citations (7)
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| US3782166A (en) * | 1972-06-09 | 1974-01-01 | L Whistler | Die set assembly and magnet means for releasably attaching dies therein |
| DE2711696A1 (en) * | 1977-03-17 | 1978-09-21 | Siemens Ag | PRECISION PUNCHING TOOL |
| US4254999A (en) * | 1979-09-04 | 1981-03-10 | Davidson James D | Die shoes with standard interchangable components and method for interchangability |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128174A (en) * | 2013-03-07 | 2013-06-05 | 沈阳化工大学 | Assembly die for cold stamping and forming of auto-body panels and design method of assembly die |
| CN107199277A (en) * | 2016-03-18 | 2017-09-26 | 现代自动车株式会社 | The method for carrying out trimming to superhigh intensity drop stamping steel plate using molding |
| CN107966365A (en) * | 2017-12-19 | 2018-04-27 | 宁波精乐汽车部件有限公司 | A kind of collision prevention girders solder joint destroys frock |
| CN110695214A (en) * | 2019-11-26 | 2020-01-17 | 霍修沛 | Double-layer water cooling mold for manufacturing automobile bumper by hot stamping mode |
| CN111468584A (en) * | 2020-03-31 | 2020-07-31 | 爱驰汽车有限公司 | Die for manufacturing anti-collision main beam, manufacturing method of anti-collision main beam and anti-collision beam |
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Application publication date: 20110216 |