CN102744328A - Method for manufacturing high strength steel plate hot stamping die - Google Patents
Method for manufacturing high strength steel plate hot stamping die Download PDFInfo
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- CN102744328A CN102744328A CN2012102430804A CN201210243080A CN102744328A CN 102744328 A CN102744328 A CN 102744328A CN 2012102430804 A CN2012102430804 A CN 2012102430804A CN 201210243080 A CN201210243080 A CN 201210243080A CN 102744328 A CN102744328 A CN 102744328A
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Abstract
The invention discloses a method for manufacturing a high strength steel plate hot stamping die and belongs to the technical field of hot stamping forming. Aims at the manufacturing problem that shape follow-up cooling water channels are arranged in bent molded surfaces of male and female dies of the hot stamping die, the method is disclosed. The method comprises the following steps of: firstly, according to the shapes of the molded surfaces of the male and female dies of the die, bending the cooling water channels and connecting the cooling water channels into a pipeline system; then dividing the male and female dies into processing blocks according to the shape follow-up cooling water channels and processing grooves for placing the shape follow-up cooling water channels; and placing the shape follow-up cooling water channels into the grooves; and correspondingly combining and fixing the processing blocks to form a male and female die structure in which the shape follow-up cooling water channels are arranged. The method adopts the process scheme of manufacturing the cooling water channels, cutting the male and female dies, processing the grooves of the cooling water channels, placing the cooling water channels into the grooves and combining and fixing the male and female die processing blocks. According to the process scheme, the hot stamping die of which the cooling water channels follow up the shapes of the molded surfaces of the male and female dies and are at the equal distances with the molded surfaces of the male and female dies of the die can be manufactured; and a high strength steel plate hot stamping part with a uniform cooling effect can be processed by the die.
Description
Technical field:
The present invention proposes a kind of high strength steel plate hot stamping die manufacturing approach, belongs to technical field of hot stamping and forming.
Background technology:
Energy-saving and environmental protection, safety, comfortable be the general trend of current automobile industry development, reduce oil consumption, energy-saving and emission-reduction are hot issues that the current whole world is paid close attention to.The effective way that the lightweight technology of automobile addresses this problem beyond doubt.Yet, realize the lightweight of automobile, except can the optimal design vehicle structure, can also adopt lightweight made car body member.High strength and ultrahigh-strength steel plates become one of light-weighted main means of automobile as typical case's representative of lightweight material with its light weight, high-intensity characteristics.High-strength steel sheet is compared with general steel plate; Have higher yield stress and tensile strength, hardenability value and thick anisotropy coefficient are lower, and percentage elongation is also lower; Drawing ability under normal temperature condition; Be prone to defectives such as cracking, wrinkling, resilience, die wear simultaneously is comparatively serious, greatly reduces die life.Therefore, traditional cold punching forming process can not satisfy the needs of technology and production development fully, so the limitation that a kind of new hot press-formed technology has solved the above-mentioned forming property of high-strength steel sheet occurred.The drop stamping technology is that high strength steel plate is heated to a certain temperature under the high temperature in special heater; And the insulation a period of time, make its abundant austenitizing after, transfer to quick shaping in the hot stamping die rapidly; Simultaneously; Utilize the cooling device that is provided with in the hot stamping die that product is carried out quench cooled, thereby obtain to have even martensitic structure, the unimach member of intensity more than 1500MPa.Quench when this technological core is sheet forming, promptly hot stamping die also should possess good cooling capacity when possessing the part forming of satisfying.The cooling system of hot stamping die is that design is protruding at mould, the cooling water channel at the following certain thickness of die profile place; This cooling water channel can process through the method for machining; In cooling water channel, feed recirculated cooling water and come that cooling die is protruding, the die profile; Thereby cooling forming spare is realized the quenching to drip molding.
Usually the cooling water channel of hot stamping die all is to be designed to straight line circular hole formula, and processes through drilling machine.When cooling water channel with bending protruding, when the die profile is designed to conformal, drilling machine can't be accomplished conformal processing, will cause the cooling water channel inner surface unequal to distance protruding, the die profile, will inevitably influence the cooling effect of product, influence the structure property of product.
The present invention proposes a kind of novel high strength steel plate hot stamping die manufacturing approach, this kind method has solved the problem that traditional diamond-making technique is protruding for bending, the conformal cooling water channel of die profile can't be processed.
Summary of the invention:
The conformal cooling water channel has advantages such as cooling effectiveness height, cooling good evenness, but because there is the three-D space structure characteristic of conformal in it, has brought challenge for the conventional molds manufacturing technology.
The present invention proposes a kind of high strength steel plate hot stamping die manufacturing approach, mainly solve the problem that traditional diamond-making technique is protruding for bending, the conformal cooling water channel of die profile can't be processed.
A kind of high strength steel plate hot stamping die manufacturing approach may further comprise the steps in conjunction with accompanying drawing:
A) cooling water channel manufacturing: the space cooling water channel 3 that produces conformal according to mould punch 2, the combination of die 1 profile curved shape;
B) cut apart protruding, die: with cooling water channel center 4 is the branch tangent plane, and protruding, die are divided into processing block 5,6,7,8;
C) cooling water channel groove processing: divide machining on the tangent plane 4 to go out to be used to place the groove 9,10,11,12 of cooling water channel at protruding, die;
D) cooling water channel is inserted: cooling water channel is positioned over protruding, die divides in the groove 9,10,11,12 that tangent plane 4 processes, accurately locate with protruding, die profile curved shape;
F) combination fixed convex, die processing block: protruding, the pairing processing block of die are fixed through 13 combinations, obtained punch, the die structure of built-in conformal cooling water channel.
Described cooling water channel manufacturing is the combined type conformal space cooling water channel of processing through cutting, bending, welding and thread connection 3.
Describedly cut apart punch 2, die 1 is to utilize methods such as Wire EDM or cut, serves as the branch tangent plane with cooling water channel center 4, and protruding, die are divided into two processing blocks 5,6,7,8 respectively.
The processing of described cooling water channel groove is to utilize the method for machining on the branch tangent plane 4 of protruding, die piecemeal, to process the groove 9,10,11,12 that is used to place cooling water channel.
Described combination fixed convex, die processing block are after cooling water channel is accurately located and be positioned in the manufactured groove with protruding, die profile curved shape, utilize thread connection 13 to make up two processing blocks of fixed convex, die respectively.
Compare with traditional hot diel manufacturing approach, have the following advantages:
Utilize the present invention can produce hot stamping die with conformal three-D space structure cooling water channel.The cooling water channel of traditional hot stamping die all is to be designed to straight line circular hole formula, and processes through drilling machine.When cooling water channel with bending protruding, when the die profile is designed to conformal, drilling machine then can't be accomplished conformal processing, causes the cooling water channel inner surface unequal to distance protruding, the die profile, will inevitably influence the cooling effect of product, influences the structure property of product.The present invention is protruding according to mould, die profile shape bends cooling water channel, and connects into pipe-line system, then protruding, die is divided into processing block according to the conformal cooling water channel; And process the groove of placing the conformal cooling water channel; The conformal cooling water channel is inserted in the groove, and corresponding combination fixedly processing block forms protruding, the die structure of built-in conformal cooling water channel, has guaranteed the cooling water channel conformal; And, die profile protruding apart from mould equates everywhere, also can prevent cooling water seepage infringement mould simultaneously.Utilize this mould can process the uniform high strength steel plate heat-punch member of cooling effect.
Description of drawings:
Fig. 1 is protruding, the die structural perspective.
Fig. 2 mould manufacturing method sketch map, wherein:
The manufacturing of Fig. 2 (a) cooling water channel;
Fig. 2 (b) cooling water channel center is for dividing tangent plane;
Fig. 2 (c) die processing block;
Fig. 2 (d) punch processing block;
Fig. 2 (e) die divides processing cooling water channel groove on the tangent plane;
Fig. 2 (f) punch divides processing cooling water channel groove on the tangent plane;
Fig. 2 (g) makes up fixedly die processing block after inserting cooling water channel;
Fig. 2 (h) makes up the solid punch processing block after inserting cooling water channel.
Fig. 3 mould manufacturing method FB(flow block).
Among the figure: 1. 4. fens tangent plane 5. die processing blocks of die structure 2. punch structures 3. cooling water channels, 6. die processing blocks, 7. punch processing blocks, 8. punch processing blocks, 9. cooling water channel grooves, 10. cooling water channel grooves, 11. cooling water channel grooves, 12. cooling water channel grooves, 13. thread connectors
The specific embodiment:
Below in conjunction with further specifying the content of the present invention and the specific embodiment shown in the accompanying drawing.
Fig. 1 is that hot stamping die is protruding, the die structure chart.At first, metal tube is processed combined type conformal three dimensions cooling water channel 3, consult Fig. 2 (a) through modes such as cutting, bending, welding and thread connection according to the profile curved shape of mould punch 2, die 1.For the conformal three dimensions cooling water channel that will bend is presented to protruding; In the die, and, die profile protruding apart from mould equate everywhere, serves as the branch tangent plane with cooling water channel center 4; Consult Fig. 2 (b); Utilize methods such as Wire EDM or cut, protruding, die are divided into two processing blocks 5,6,7,8 respectively, consult Fig. 2 (c) and Fig. 2 (d).Divide at protruding, die and to utilize machining process such as milling, grinding to process the groove 9,10,11,12 that is used to place cooling water channel on the tangent plane 4, consult Fig. 2 (e) and Fig. 2 (f).The cooling water channel 3 of conformal is positioned over protruding, die to be divided in the groove 9,10,11,12 that processes on the tangent plane 4; Accurately locate with protruding, die profile curved shape; Assurance is protruding apart from mould, the die profile equates everywhere; Utilize thread connection 13 to make up two processing blocks of fixed convex, die respectively then, consult Fig. 2 (g) and Fig. 2 (h), obtain punch, the die structure of built-in conformal cooling water channel.
A kind of high strength steel plate hot stamping die manufacturing approach proposed by the invention has solved the problem that traditional diamond-making technique is protruding for bending, the conformal cooling water channel of die profile can't be processed, and actual production is had important directive significance.
Claims (5)
1. high strength steel plate hot stamping die manufacturing approach is characterized in that manufacture technology scheme is following:
A) cooling water channel manufacturing: the space cooling water channel (3) that produces conformal according to mould punch (2), the combination of die (1) profile curved shape;
B) cut apart protruding, die: with cooling water channel center (4) is the branch tangent plane, and protruding, die are divided into processing block (5), (6), (7), (8);
C) cooling water channel groove processing: divide tangent plane (4) to go up groove (9), (10), (11), (12) that machining goes out to be used to place cooling water channel at protruding, die;
D) cooling water channel is inserted: cooling water channel is positioned in groove (9) that protruding, die divides tangent plane 4 to process, (10), (11), (12), accurately locatees with protruding, die profile curved shape;
F) combination fixed convex, die processing block: protruding, the pairing processing block of die are fixed through (13) combination, obtained punch, the die structure of built-in conformal cooling water channel.
2. a kind of high strength steel plate hot stamping die manufacturing approach according to claim 1 is characterized in that, described cooling water channel manufacturing is the combined type conformal space cooling water channel of processing through cutting, bending, welding and thread connection (3).
3. a kind of high strength steel plate hot stamping die manufacturing approach according to claim 1; It is characterized in that; Describedly cut apart punch (2), die (1) is to utilize methods such as Wire EDM or cut; With cooling water channel center (4) is the branch tangent plane, and protruding, die are divided into two processing blocks (5), (6), (7), (8) respectively.
4. a kind of high strength steel plate hot stamping die manufacturing approach according to claim 1; It is characterized in that the processing of described cooling water channel groove is to utilize the method for machining on the branch tangent plane (4) of protruding, die piecemeal, to process groove (9), (10), (11), (12) that are used to place cooling water channel.
5. a kind of high strength steel plate hot stamping die manufacturing approach according to claim 1; It is characterized in that; Described combination fixed convex, die processing block are after cooling water channel is accurately located and be positioned in the manufactured groove with protruding, die profile curved shape, utilize thread connection (13) to make up two processing blocks of fixed convex, die respectively.
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| CN2012102430804A CN102744328A (en) | 2012-07-16 | 2012-07-16 | Method for manufacturing high strength steel plate hot stamping die |
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| CN2012102430804A CN102744328A (en) | 2012-07-16 | 2012-07-16 | Method for manufacturing high strength steel plate hot stamping die |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658395A (en) * | 2013-11-29 | 2014-03-26 | 大连鑫永工业制造有限公司 | Water-cooling bending die for auto part machining |
| CN104139116A (en) * | 2014-06-29 | 2014-11-12 | 柳州美纳机械有限公司 | Stamping surface machining method of curved plate stamping die |
| CN104657565A (en) * | 2015-03-20 | 2015-05-27 | 大连理工大学 | Method for designing hot-working die of close-profile water channel |
| CN104923673A (en) * | 2015-07-15 | 2015-09-23 | 柳州伟祺数控机械有限公司 | Water-cooling bending mould for automobile accessory machining |
| CN106944550A (en) * | 2017-04-24 | 2017-07-14 | 姚富江 | A kind of metal stamping die of high-efficient atomizing cooling |
| CN108326144A (en) * | 2018-01-10 | 2018-07-27 | 东风商用车有限公司 | A kind of drive axle end cap hot stamping forming die and its manufacturing method |
| CN108435919A (en) * | 2018-05-22 | 2018-08-24 | 东风汽车集团有限公司 | A kind of method and cooling system obtaining a variety of intensity drop stamping parts |
| CN108746375A (en) * | 2018-07-20 | 2018-11-06 | 重庆大学 | A method of material is increased based on electric arc and prepares hot stamping die insert with laser melting coating |
| CN108942105A (en) * | 2018-08-07 | 2018-12-07 | 重庆大学 | A kind of preparation method of hot stamping forming die insert |
| CN111085833A (en) * | 2019-11-26 | 2020-05-01 | 重庆大学 | Method for controlling volume plastic forming distortion of bent hole by using local temperature difference |
| CN113182440A (en) * | 2021-04-30 | 2021-07-30 | 合肥合锻智能制造股份有限公司 | Laminated water cooling mold for indirect thermal forming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103658395A (en) * | 2013-11-29 | 2014-03-26 | 大连鑫永工业制造有限公司 | Water-cooling bending die for auto part machining |
| CN104139116A (en) * | 2014-06-29 | 2014-11-12 | 柳州美纳机械有限公司 | Stamping surface machining method of curved plate stamping die |
| CN104657565A (en) * | 2015-03-20 | 2015-05-27 | 大连理工大学 | Method for designing hot-working die of close-profile water channel |
| CN104657565B (en) * | 2015-03-20 | 2017-07-21 | 大连理工大学 | The hot-work die design method of plesiotype face water channel |
| CN104923673A (en) * | 2015-07-15 | 2015-09-23 | 柳州伟祺数控机械有限公司 | Water-cooling bending mould for automobile accessory machining |
| CN106944550A (en) * | 2017-04-24 | 2017-07-14 | 姚富江 | A kind of metal stamping die of high-efficient atomizing cooling |
| CN108326144A (en) * | 2018-01-10 | 2018-07-27 | 东风商用车有限公司 | A kind of drive axle end cap hot stamping forming die and its manufacturing method |
| CN108435919B (en) * | 2018-05-22 | 2023-10-24 | 东风汽车集团有限公司 | Method for obtaining hot stamping parts with various strengths and cooling system |
| CN108435919A (en) * | 2018-05-22 | 2018-08-24 | 东风汽车集团有限公司 | A kind of method and cooling system obtaining a variety of intensity drop stamping parts |
| CN108746375A (en) * | 2018-07-20 | 2018-11-06 | 重庆大学 | A method of material is increased based on electric arc and prepares hot stamping die insert with laser melting coating |
| CN108746375B (en) * | 2018-07-20 | 2020-04-14 | 重庆大学 | Method for preparing hot stamping die insert based on electric arc additive and laser cladding |
| CN108942105A (en) * | 2018-08-07 | 2018-12-07 | 重庆大学 | A kind of preparation method of hot stamping forming die insert |
| CN111085833A (en) * | 2019-11-26 | 2020-05-01 | 重庆大学 | Method for controlling volume plastic forming distortion of bent hole by using local temperature difference |
| CN111085833B (en) * | 2019-11-26 | 2022-04-29 | 重庆大学 | Method for controlling volume plastic forming distortion of bent hole by using local temperature difference |
| CN113182440A (en) * | 2021-04-30 | 2021-07-30 | 合肥合锻智能制造股份有限公司 | Laminated water cooling mold for indirect thermal forming |
| CN113182440B (en) * | 2021-04-30 | 2023-09-19 | 合肥合锻智能制造股份有限公司 | Laminated water-cooling die for indirect thermoforming |
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Application publication date: 20121024 |