CN104998967B - The thermoforming of a kind of complete formation of martensite controls mould and control method - Google Patents
The thermoforming of a kind of complete formation of martensite controls mould and control method Download PDFInfo
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- CN104998967B CN104998967B CN201510397503.1A CN201510397503A CN104998967B CN 104998967 B CN104998967 B CN 104998967B CN 201510397503 A CN201510397503 A CN 201510397503A CN 104998967 B CN104998967 B CN 104998967B
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- 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
- B21D37/10—Die sets; Pillar guides
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- 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
- B21D37/16—Heating or cooling
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
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Abstract
The thermoforming that the present invention relates to a kind of complete formation of martensite controls mould, it is characterized in that, described control mould includes upper die component, lower mold assemblies, bullet top system and cooling system, described upper die component includes upper die plate, upper bolster, splicing die, described lower mold assemblies includes lower mold backing plate, die shoe and forming convax mould, bullet top system is separately positioned on upper die plate and lower mold backing plate, described upper bolster, splicing die is arranged on upper die plate, described forming convax mould, die shoe is arranged on lower mold backing plate, described cooling system is arranged on upper die component or on lower mold assemblies or be simultaneously located on upper die component and lower mold assemblies.This device overall construction design is ingenious, compact, and cost is relatively low, and precision is high, improves quenching efficiency, extends the mold use life-span.
Description
Technical field
The present invention relates to a kind of control mould, the thermoforming being specifically related to a kind of complete formation of martensite controls mould and control method, belongs to thermoforming stamping technology field.
Background technology
Hot press-formed technology, is to be heated to by boron steel steel plateAusteniteChange state, is quickly transferred to mould high speed stamping, and in the case of ensureing certain pressure, product is carried out with the cooling velocity more than 27 DEG C/s in die ontologyQuenchingProcessing, pressurize quenches a period of time, has uniformly to obtainMartensiteThe forming mode of the super-high strength steel part of tissue.Thermoforming auto parts and components stamping technology, its objective is after quenching, austenite steel plate is changed into martensite ultrahigh-strength steel plates profiled member, but the difficult point of this technology is how to control the complete martensitic transformation of sheet material, the steel plate forming part of formation of martensite only completely is only ultrahigh-strength steel plates profiled member, in order to solve this technical problem, those skilled in the art is also constantly attempting new method, such as control the speed of mould, increase cooling device etc., these measures alleviate prior art to a certain extent, but solve the problems referred to above on the most fundamentally.
Summary of the invention
The present invention is just for technical problem present in prior art, it is provided that the drop stamping of a kind of complete formation of martensite controls device, and this device overall construction design is ingenious, compact, cost is relatively low, and precision is high, improves quenching efficiency, extends the mold use life-span.
To achieve these goals, technical scheme is as follows, the thermoforming of formation of martensite completely controls mould, it is characterized in that, described control mould includes upper die component, lower mold assemblies, bullet top system and cooling system, described upper die component includes upper die plate, upper bolster, splicing die, described lower mold assemblies includes lower mold backing plate, die shoe and forming convax mould, bullet top system is separately positioned on upper die plate and lower mold backing plate, described upper bolster, splicing die is arranged on upper die plate, described forming convax mould, die shoe is arranged on lower mold backing plate, described cooling system is arranged on upper die component or on lower mold assemblies or be simultaneously located on upper die component and lower mold assemblies.Whole technical scheme compact conformation, reasonable in design, this technical scheme is provided with cooling system on upper die component or lower mold assemblies, substantially increases quenching efficiency, it is ensured that the uniformity of formed product, improve product quality.
As a modification of the present invention, described splicing die includes die plate insert and movable material pressing core, and described movable material pressing core is arranged in the middle of two die plate inserts, and wherein die plate insert is arranged on upper bolster with movable material pressing core, is fixed by fastening bolt.In this technical scheme, die plate insert and movable material pressing core are provided separately, in forming process, first movable material pressing core first contacts hot plate material, play binder effect, two die plate inserts contact with hot plate and press with under upper mold simultaneously so that material is product-centered in forming process to flow to both sides uniformly, it is ensured that the material Uniform Flow of forming convax mould boss both sides；Secondly, movable material pressing core in punching course by the opposition of nitrogen cylinder, this active force is more than the elastic force of nitrogen cylinder, less than stamping press, after punching press terminates, nitrogen cylinder gives movable one downforce of binder block so that movable material pressing core with upper bolster up time can give one pressing force of stamping parts, the forming stability of holding thermoforming part.
As a modification of the present invention, described bullet top system is set to nitrogen cylinder or spring, described movable material pressing core is provided above nitrogen cylinder or spring, described nitrogen cylinder or spring are provided above upper mold cushion block, described nitrogen cylinder or spring are bolted on upper mold cushion block, wherein the formation of nitrogen cylinder is more than or equal to formed product height, it is simple to formed product.
As a modification of the present invention, described upper bolster being provided with wearing plate, described cushion block is fixed on wearing plate, and described cushion block, wearing plate are disposed as rectangle.
As a modification of the present invention, described movable material pressing core is provided with hanging platform mechanism.Prevent movable material pressing core from coming off in the punching course of high frequency time, while guarantee activity material pressing core installation strength, improve die life and safe operation.
As a modification of the present invention, described lower mold assemblies also includes that lower mold push rod, lower mold cushion block, described lower mold push rod are arranged on above nitrogen cylinder or spring, and nitrogen cylinder or spring are arranged on die shoe by lower mold cushion block.
As a modification of the present invention, described cooling system is set to cooling water channel, and described forming convax mould is provided with cooling water channel.
As a modification of the present invention, described movable material pressing core being provided with cooling water channel, this cooling water channel is that profiling array is arranged, wherein the gap between cooling water channel is 50mm；Being provided with cooling water channel on described die plate insert, wherein the gap between cooling water channel is 50mm.The cooling water flow velocity of the cooling water channel on movable material pressing core is less than the cooling water flow velocity of two die plate inserts, movable material pressing core is in hot plate forming process, by its cooling system, hot plate is quenched, due to different cooling flow velocitys, making thermoforming part difference shaping position there is quenching speed difference, this quenching speed difference is easy to improve quenching efficiency, improves the accuracy of quenching technical Intervention Timing, shorten the cool time of thermoforming part so that quenching efficiency is greatly improved.
The thermoforming of formation of martensite completely controls the control method of mould, it is characterized in that, said method comprising the steps of, 1) punch press drives upper die component descending, first movable material pressing core contacts the steel plate of heat under the effect of nitrogen cylinder, and is compressed in forming convax mould projection profile by the steel plate of heat, and the cooling system on movable material pressing core is started working, cool time is 3s, and profiled member convex surface is carried out precompressed, prequenching；
2) punch press continues traveling downwardly, and two die plate inserts contact with hot plate, makes it be molded under pressure, simultaneously enters quenching, packing stage；Quenching is the boron steel that will warm up austenitizing, utilizes the cooling system of this device with the Technology for Heating Processing being as cold as soon under Ms thermoisopleth more than the cooling rate of critical cooling rate；Pressurize is that mould closes under the pressure effect of punch press, and punch press provides the pressure of about about 400T to make thermoforming part keep about the 8-12s time after shaping, in order to the technique being molded, quenching the resilience controlling product simultaneously to mould simultaneously；
3) after quenching, pressurize terminate, punch press is up, and now thermoforming part is under the effect of movable material pressing core, is maintained on punch die cavity；
4) punch press continues up, and movable material pressing core departs from thermoforming part, and lower mold push rod is arranged on above nitrogen cylinder, and nitrogen cylinder is arranged on die shoe by lower mold cushion block, and profiled member, under the effect of nitrogen cylinder, is ejected by lower mold push rod, and product is taken out by manipulator.
Relative to prior art, advantages of the present invention is as follows: 1) overall construction design of the present invention is ingenious, and compact conformation is practical；2) this technical scheme is provided with splicing die, die plate insert and movable material pressing core in splicing die are provided separately, become three independent structure members, in forming process, first movable material pressing core elder generation contact material, play binder effect, make material product-centered uniformly to both sides flowing in forming process, it is ensured that the uniformity of material both sides, secondly, two die plate inserts contact with hot plate simultaneously, improve quenching efficiency；3) this technical scheme is provided with cooling water channel on movable material pressing core, forming convax mould and die plate insert, different owing to cooling down water flow velocity between each cooling water channel, thermoforming part difference shaping position is made to there is quenching speed difference, this quenching speed difference is easy to improve quenching efficiency, improve the accuracy of quenching technical Intervention Timing, shorten the cool time of thermoforming part so that quenching efficiency is greatly improved, it is ensured that thermoforming part is reached the technological transformation purpose of complete formation of martensite；4) this technical scheme cost price is low, saved the mold repair working time, saved the mold repair time, added service life.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention；
Fig. 2 is mould open mode schematic diagram；
Fig. 3 is that Guan Bi schematic diagram opened by mould；
In figure: 1, upper die plate, 2, upper bolster, 3, bullet top system composition, 4, splicing die, 41, die plate insert, 42, movable material pressing core, 5, forming convax mould, 6, die shoe, 7, lower mold backing plate, 8, cooling water channel, 9, cushion block, 10, nitrogen cylinder, 11, steel plate.
Detailed description of the invention
In order to deepen the understanding of the present invention and understanding, the invention will be further described and introduces with detailed description of the invention below in conjunction with the accompanying drawings.
Embodiment 1:
See Fig. 1, the thermoforming of a kind of complete formation of martensite controls mould, described control mould includes upper die component, lower mold assemblies, bullet top system 3 and cooling system, described upper die component includes upper die plate 1, upper bolster 2, splicing die 4, described lower mold assemblies includes lower mold backing plate 7, die shoe 6 and forming convax mould 5, described bullet top system 3 is separately positioned on upper die plate and lower mold backing plate, described upper bolster 2, splicing die 4 is arranged on upper die plate 1, described forming convax mould 5, die shoe 6 is arranged on lower mold backing plate 7, described cooling system is arranged on upper die component or on lower mold assemblies or be simultaneously located on upper die component and lower mold assemblies.See Fig. 2, this technical scheme is provided with cooling system on upper die component and lower mold assemblies, substantially increases quenching efficiency, it is ensured that the uniformity of formed product, improve product quality.
Embodiment 2:
See Fig. 1, Fig. 2, as a modification of the present invention, described splicing die 4 includes die plate insert 41 and movable material pressing core 42, and described movable material pressing core 42 is arranged in the middle of two die plate inserts 41, wherein die plate insert 41 is arranged on upper bolster with movable material pressing core, is fixed by fastening bolt.In this technical scheme, die plate insert 41 and movable material pressing core 42 are provided separately, in forming process, first movable material pressing core 42 first contacts hot plate material, play binder effect, two die plate inserts 41 contact with hot plate and press with under upper mold simultaneously so that material is product-centered in forming process to flow to both sides uniformly, it is ensured that the material Uniform Flow of forming convax mould boss both sides；Secondly, movable material pressing core in punching course by the opposition of nitrogen cylinder, this active force is more than the elastic force of nitrogen cylinder, less than stamping press, after punching press terminates, nitrogen cylinder gives movable one downforce of binder block so that movable material pressing core with upper bolster up time can give one pressing force of stamping parts, the forming stability of holding thermoforming part.Remaining structure is identical with embodiment 1 with advantage.
Embodiment 3:
See Fig. 1, Fig. 2, as a modification of the present invention, described bullet top system 3 is set to nitrogen cylinder or spring, described movable material pressing core is provided above nitrogen cylinder or spring, described nitrogen cylinder or spring are provided above upper mold cushion block, described nitrogen cylinder or spring are bolted on upper mold cushion block, and wherein the formation of nitrogen cylinder is more than or equal to formed product height, it is simple to formed product.Remaining structure is identical with embodiment 1 with advantage.
Embodiment 4:
Seeing Fig. 1, Fig. 2, as a modification of the present invention, described upper bolster is provided with wearing plate, described cushion block is fixed on wearing plate, and described cushion block, wearing plate are disposed as rectangle, and described movable material pressing core is provided with hanging platform mechanism.Prevent movable material pressing core from coming off in the punching course of high frequency time, while guarantee activity material pressing core installation strength, improve die life and safe operation.Remaining structure is identical with embodiment 1 with advantage.
Embodiment 5:
Seeing Fig. 1, Fig. 2, as a modification of the present invention, described lower mold assemblies also includes that lower mold push rod, lower mold cushion block, described lower mold push rod are arranged on above nitrogen cylinder or spring, and nitrogen cylinder or spring are arranged on die shoe 6 by lower mold cushion block.
Embodiment 6:
Seeing Fig. 1, Fig. 2, as a modification of the present invention, described cooling system is set to cooling water channel 8, and described forming convax mould 5 is provided with cooling water channel 8；Being also equipped with cooling water channel 8 on described movable material pressing core 42, this cooling water channel is that profiling array is arranged, wherein the gap between cooling water channel is 50mm；Being also equipped with cooling water channel on described die plate insert 41, wherein the gap between cooling water channel is 50mm.The cooling water flow velocity of the cooling water channel on movable material pressing core 42 is less than the cooling water flow velocity of two die plate inserts 41, movable material pressing core 42 is in hot plate forming process, by its cooling system, hot plate is quenched, due to different cooling flow velocitys, making thermoforming part difference shaping position there is quenching speed difference, this quenching speed difference is easy to improve quenching efficiency, improves the accuracy of quenching technical Intervention Timing, shorten the cool time of thermoforming part so that quenching efficiency is greatly improved.
Embodiment 7:
See Fig. 1, Fig. 2, Fig. 3, the thermoforming of formation of martensite completely controls the control method of mould, said method comprising the steps of, 1) punch press drives upper die component descending, first movable material pressing core contacts the steel plate 11 of heat under the effect of nitrogen cylinder, and is compressed in forming convax mould projection profile by the steel plate 11 of heat, and the cooling system on movable material pressing core is started working, cool time is 20s, and profiled member convex surface is carried out precompressed, prequenching；Precompressed for carry out binder before mould punching action to hot plate, and prequenching is first to quench before other positions quench；
2) punch press continues traveling downwardly, and two die plate inserts 41 contact with hot plate 11, make it be molded under pressure, simultaneously enter quenching, packing stage；Quenching is the boron steel that will warm up austenitizing, utilizes the cooling system of this device with the Technology for Heating Processing being as cold as soon under Ms thermoisopleth more than the cooling rate of critical cooling rate；Pressurize is that mould closes under the pressure effect of punch press, and punch press provides the pressure of about about 200T to make thermoforming part keep about the 20s time after shaping, in order to the technique being molded, quenching the resilience controlling product simultaneously to mould simultaneously；
3) after quenching, pressurize terminate, punch press is up, and now thermoforming part is under the effect of movable material pressing core, is maintained on punch die cavity；
4) punch press continues up, and movable material pressing core departs from thermoforming part, and lower mold push rod is arranged on above nitrogen cylinder, and nitrogen cylinder is arranged on die shoe by lower mold cushion block, and profiled member, under the effect of nitrogen cylinder, is ejected by lower mold push rod, and product is taken out by manipulator.
At least one in technical characteristic described in embodiment 2,3,4,5,6 and embodiment 1 can also be combined and form new embodiment by the present invention.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, equivalents done on the basis of technique scheme or replacement each fall within the scope that the claims in the present invention are protected.
Claims (8)
- null1. the thermoforming of a complete formation of martensite controls mould，It is characterized in that，Described control mould includes upper die component、Lower mold assemblies、Bullet top system and cooling system，Described upper die component includes upper die plate、Upper bolster、Splicing die，Described lower mold assemblies includes lower mold backing plate、Die shoe and forming convax mould，Bullet top system is separately positioned on upper die plate and lower mold backing plate，Described upper bolster、Splicing die is arranged on upper die plate，Described forming convax mould、Die shoe is arranged on lower mold backing plate，Described cooling system is arranged on upper die component or on lower mold assemblies or be simultaneously located on upper die component and lower mold assemblies，Described splicing die includes die plate insert and movable material pressing core，Described movable material pressing core is arranged in the middle of two die plate inserts，Wherein die plate insert is arranged on upper bolster with movable material pressing core，Fixed by fastening bolt，Described bullet top system is set to nitrogen cylinder or spring，Described movable material pressing core is provided above nitrogen cylinder or spring，Described nitrogen cylinder or spring are provided above upper mold cushion block，Described nitrogen cylinder or spring are bolted on upper mold cushion block.
- The thermoforming of complete formation of martensite the most according to claim 1 controls mould, it is characterised in that being provided with wearing plate on described upper bolster, described upper mold cushion block is fixed on wearing plate, and described upper mold cushion block, wearing plate are disposed as rectangle.
- The thermoforming of complete formation of martensite the most according to claim 1 and 2 controls mould, it is characterized in that, described lower mold assemblies also includes that lower mold push rod, lower mold cushion block, described lower mold push rod are arranged on above nitrogen cylinder or spring, and nitrogen cylinder or spring are arranged on die shoe by lower mold cushion block.
- The thermoforming of complete formation of martensite the most according to claim 3 controls mould, it is characterised in that be provided with hanging platform mechanism on described movable material pressing core.
- The thermoforming of complete formation of martensite the most according to claim 4 controls mould, it is characterised in that described cooling system is set to cooling water channel, and described forming convax mould is provided with cooling water channel.
- The thermoforming of complete formation of martensite the most according to claim 5 controls mould, it is characterised in that being provided with cooling water channel on described movable material pressing core, wherein the gap between cooling water channel is 50mm.
- 7. control mould according to the thermoforming of the complete formation of martensite described in claim 5 or 6, it is characterised in that being provided with cooling water channel on described die plate insert, wherein the gap between cooling water channel is 50mm.
- 8. the thermoforming according to formation of martensite complete described in any one of claim 1-7 controls the control method of mould, it is characterised in that said method comprising the steps of:1) punch press drives upper die component descending, first movable material pressing core contacts the steel plate of heat under the effect of nitrogen cylinder, and is compressed in forming convax mould projection profile by the steel plate of heat, and the cooling system on movable material pressing core is started working, cool time is 3s, and profiled member convex surface is carried out precompressed, prequenching；2) punch press continues traveling downwardly, and two die plate inserts contact with hot plate, makes it be molded under pressure, simultaneously enters quenching, packing stage, and this process duration is 8-12s；3) after quenching, pressurize terminate, punch press is up, and now thermoforming part is under the effect of movable material pressing core, is maintained on punch die cavity；4) punch press continues up, and movable material pressing core departs from thermoforming part, and lower mold push rod is arranged on above nitrogen cylinder, and nitrogen cylinder is arranged on die shoe by lower mold cushion block, and profiled member, under the effect of nitrogen cylinder, is ejected by lower mold push rod, and product is taken out by manipulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510397503.1A CN104998967B (en) | 2015-07-09 | 2015-07-09 | The thermoforming of a kind of complete formation of martensite controls mould and control method |
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| CN201510397503.1A CN104998967B (en) | 2015-07-09 | 2015-07-09 | The thermoforming of a kind of complete formation of martensite controls mould and control method |
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| CN107413960A (en) * | 2017-07-31 | 2017-12-01 | 南京星乔威泰克汽车零部件有限公司 | The insert and eccentric swage and hot forming tool of a kind of hot forming tool |
| CN107824678A (en) * | 2017-10-11 | 2018-03-23 | 南京工程学院 | A kind of stamping module method of heating of martensite steel component without transfer |
| CN109821986A (en) * | 2019-04-12 | 2019-05-31 | 佛山华翔汽车金属零部件有限公司 | Hot forming and hot punching die structure |
| DE102019112547A1 (en) * | 2019-05-14 | 2020-11-19 | Felss Systems Gmbh | Processing unit and processing machine for processing a workpiece on a workpiece wall and a method for producing a processing unit of the type mentioned |
| CN111360156A (en) * | 2020-02-25 | 2020-07-03 | 东风天汽模（武汉）金属材料成型有限公司 | Laser tailor-welded blank, laser tailor-welded blank thermoformed part and preparation method thereof |
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| DE102008034996B4 (en) * | 2008-07-25 | 2010-11-18 | Benteler Automobiltechnik Gmbh | Apparatus for thermoforming, press hardening and cutting of a semifinished product of hardenable steel |
| JP2011218436A (en) * | 2010-04-14 | 2011-11-04 | Honda Motor Co Ltd | Hot press-forming method |
| DE102011108912A1 (en) * | 2011-07-28 | 2013-01-31 | Volkswagen Aktiengesellschaft | Segmented press hardening tool |
| DE102011116714B4 (en) * | 2011-10-22 | 2022-12-22 | Volkswagen Aktiengesellschaft | Method and tool for hot forming a sheet material |
| US9132464B2 (en) * | 2012-06-12 | 2015-09-15 | Martinrea Industries, Inc. | Method for hot stamping metal |
| KR101427918B1 (en) * | 2012-10-05 | 2014-08-08 | 현대자동차 주식회사 | Hot stamping forming device and method therefor |
| DE102013004034B4 (en) * | 2013-03-08 | 2021-03-25 | Volkswagen Aktiengesellschaft | Forming tool for hot forming and / or press hardening with at least one cutting punch to create a recess in the sheet material while it is still warm |
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