CN105195623A - Temperature control type stamping die for high-strength steel plate and method - Google Patents
Temperature control type stamping die for high-strength steel plate and method Download PDFInfo
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- CN105195623A CN105195623A CN201510702749.5A CN201510702749A CN105195623A CN 105195623 A CN105195623 A CN 105195623A CN 201510702749 A CN201510702749 A CN 201510702749A CN 105195623 A CN105195623 A CN 105195623A
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Abstract
Provided are a temperature control type stamping die for a high-strength steel plate and a method. The temperature control type stamping die for the high-strength steel plate comprises the high-strength steel plate, a cooling system, a temperature measurement system, an upper die module and a lower die module, wherein the upper die module and the lower die module are horizontally arranged and closed to conduct stamping forming on the high-strength steel plate, an infrared thermal imager collects temperature data of the rounded corner of the end of a concave die of the upper die module after completing each stamping and displays through a computer, and the cooling system adopts vent holes formed in air delivery pipes on the peripheries of parting positions to conduct cooling on the upper die module, the lower die module and a forming part of the high-strength steel plate through air cooling according to the temperature variation data. According to the temperature control type stamping die for the high-strength steel plate and the method, modification on the stamping die is not necessary, temperature measurement and temperature control are both completed outside the stamping die, the stamping die can be used repeatedly, and the loss of the stamping die in the continuous batched stamping process of the high-strength steel plate is avoided.
Description
Technical field
What the present invention relates to is the technology that a kind of high-strength steel sheet punching press forms field, a kind of specifically Temperature Control Type diel and method being not less than 270MPa high-strength steel sheet for tensile strength.
Background technology
Along with automobile improves constantly intensity and lightweight requirements, high-strength steel sheet becomes the preferred material in Hyundai Motor manufacture process gradually.And Sheet Metal Forming Technology has plurality of advantages such as production efficiency is high, stock utilization is high, parts quality is excellent, Technological adaptability is good, be widely used in during auto industry produces.Plate stamping part occupies very large proportion in automotive body structure, and wherein great majority adopt cold punching technology to be shaped.In high-strength steel sheet cold stamping forming process, between mould and plate, frictional heat can be produced.Compare low carbon steel plate, required stamping power enlarges markedly, and rubbing action is compared stronger, and the sheet material plastic deformation work caused by external force is converted to heat, causes mould temperature rise more obvious.In producing in enormous quantities continuously, along with the increase of punching press number of times, the heat that mould absorbs gets more and more, mold temperature raises gradually, and mold temperature rising can affect the friction condition in high-strength steel plate stamping and forming process, and due to thermal expansion deformation, cause die face to be out of shape, directly affect the forming quality of high strength steel cold-stamped part.In order to reduce mold temperature in actual production, needing to interrupt punching operation, having a strong impact on production efficiency.This problem becomes the study hotspot of current engineering academia just gradually.
High-strength steel plate stamping and forming process is complicated Thermal-mechanical Coupling process, relates generally to the Plastic Forming of sheet material, the contact friction of mould and sheet material, mould and the heat exchange of sheet material and surrounding environment, the heat trnasfer etc. between mould and sheet material.The thermo parameters method of mould at the end of single stamping period is very uneven, and variations in temperature mainly concentrates on the upper surface that the fillet position of punch and matrix and die bead coordinate with blank holder.Along with plate is constantly drawn into die, the contact area between plate and mould constantly increases, and the region, temperature field on mould is also in continuous expansion, and temperature also obviously raises.
By finding for the Temperature Control Type diel of high-strength steel sheet and the retrieval of method: Ohio State Univ-Columbus USA's precision form manufactures national engineering center (EngineeringResearchCenterforNetShapeManufacturing, ERC/NSM) T.Altan etc. are at evaluation mold materials, mould coating and lubricant are in the affecting laws of high strength steel cold stamping quality, employing business finite element software simulates the Temperature Distribution in high strength steel Cup drawing, maximum temperature appears at die entrance place, but do not relate to actual thermometric heat sink and the method for mould.Darmstadt, Germany university product engineering and forming machine research institute (InstituteforProductionEngineeringandFormingMachines, PtU) M.Christiany etc. are in the abrasional behavior of research high-strength steel cold forming die, adopt sensor measurement mold temperature, the temperature of thermal infrared imager record plate, show the increase along with shaping number of times, plate temperature raises continuously, but the cooling means of not mentioned mould.
The domestic thermometric to high-strength steel sheet diel, temperature regulating device, separate design and researchp mostly at present.If the pipe will equality of Jilin University is by ABAQUS finite element analysis software, set up the thermal influence zone in single punching cycle, the temperature field of different initial temperature mould is simulated based on thermal analyses, set up continuous batch working condition bed die temperature with the variation relation of punching press number of times by Mathematical physical analysis, do not relate to the research of temperature regulating device and method.
Through finding the retrieval of prior art, Chinese patent literature CN104722651A, publication date 2015.6.24, disclose a kind of diel with cooling device, comprise patrix, counterdie and cooling device, patrix is punch, patrix bottom center place is provided with protruding die head, lower die tip center is provided with die, upper die tip is provided with upper padding plate, upper padding plate top is provided with upper mould cover, counterdie bottom is provided with lower bolster, lower bolster bottom is provided with lower die cap, the both sides place of upper mould cover bottom is provided with guide, the both sides place of counterdie caping end is provided with guide rod, cooling device comprises cold air shower nozzle, refrigerator pipe, head cartridge and refrigerator pipe support, cold air shower nozzle is connected with refrigerator pipe.But this technology cannot realize the Real-Time Monitoring to diel die head temperature, and being only arranged at the ambilateral cold air shower nozzle of mould easily makes cooling effect uneven, cold air shower nozzle distance mold center distance is shorter easily makes the motion of cold air shower nozzle and mould and the loading and unloading of workpiece cause interference.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of Temperature Control Type diel for high-strength steel sheet and method are proposed, air is adopted to lower the temperature to the diel after punching press completes, the variations in temperature of diel is observed by thermal infrared imager, the measuring and controlling temp of multiple kinds of molds can be recycled and reused for, enhance productivity.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of Temperature Control Type diel for high-strength steel sheet, comprise: cooling system, temp measuring system, the patrix module be arranged in parallel and counterdie module, wherein: patrix module and counterdie module matched moulds carry out stamping to described high-strength steel sheet, temperature variation data after temp measuring system collection patrix module punching completes, cooling system carries out air cooling cooling to the drip molding of patrix module, counterdie module and described high-strength steel sheet respectively according to temperature variation data.
Described patrix module comprises: upper bolster and the die be arranged at below upper bolster.
Be right angle outside the end of described die, inner side is fillet.
Described counterdie module comprises: the blank holder, punch and the die shoe that are connected successively from top to down.
Described upper bolster is connected by guide pillar with die shoe.
Described cooling system comprises: source of the gas, air inlet pipe and appendix, wherein: air is discharged by appendix and carried out cooling operations by source of the gas.
Described appendix is evenly distributed on the parting position surrounding of patrix module and counterdie module.
Described appendix is provided with venthole, and aims at punch, die, drip molding and blank holder.
Described temp measuring system is thermal infrared imager.
The present invention relates to the process for stamping of above-mentioned Temperature Control Type diel, comprise the following steps:
S1: patrix module and counterdie module are installed on press respectively.
S2: at the position installation infrared thermal imaging system of distance patrix module one spacer segment, the lens axis of thermal infrared imager is aimed at the fillet of die end, calibrates temperature measurement accuracy according to the relevant temperature measuring parameter of thermometric condition setting thermal infrared imager.
Described temperature measuring parameter comprises: thermal infrared imager camera lens is to the thermal emissivity rate of the distance at thermometric place, diel and ambient humidity.
S3: be placed in by high-strength steel sheet on blank holder, die is descending carries out flanging with blank holder is closed, and after flanging completes, die continues descending, until close with punch, completes punching press.
S4: open thermal infrared imager, lifts die, the temperature variations at die entrance place after being completed by the punching press of infrared heat image instrument measuring high-strength steel sheet.
S5: open source of the gas, lift with in the process of descending matched moulds at die, air blows to diel and drip molding by the venthole on appendix, lowers the temperature.
Technique effect
Compared with prior art, the present invention has the following advantages:
1) without the need to carrying out structural modification to diel, measuring and controlling temp is all complete outside diel, thermometric and heat sink only need simply to adjust position just can in different mould Reusability;
2) variations in temperature at fillet place of die end is gathered by thermal infrared imager, can the change of accurate Quick Catch diel temperature;
3) appendix is fixed by the surrounding outside the parting position of diel, by the venthole on appendix, cooling is blown to die, punch, blank holder and drip molding, structure is simple, the operating temperature of diel can be controlled, ensure that the quality stability that high-strength steel sheet continuous batch is stamping and production efficiency, improve the service life of diel.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is cooling system schematic diagram;
Fig. 3 is control method flow chart;
In figure: 1 is upper bolster, 2 is die shoe, and 3 is die, and 4 is punch, and 5 is blank holder, and 6 is high-strength steel sheet, 7 is drip molding, and 8 is guide pillar, and 9 is guide pin bushing, and 10 is thermal infrared imager, and 11 is data wire, 12 is computer, and 13 is source of the gas, and 14 is air inlet pipe, and 15 is appendix, and 16 is venthole.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: guide pillar 8, high-strength steel sheet 6, cooling system, temp measuring system, the patrix module be arranged in parallel and counterdie module, wherein: patrix module is connected by guide pillar 8 with counterdie module, and matched moulds carries out punching press to high-strength steel sheet 6, temp measuring system carries out thermometric to patrix module, and cooling system cools the drip molding 7 of patrix module, counterdie module and high-strength steel sheet 6 respectively.
Described guide pillar 8 slides and is provided with guide pin bushing 9.
Described patrix module comprises: upper bolster 1 and the die 3 be arranged at below upper bolster 1.
Described counterdie module comprises: the blank holder 5, punch 4 and the die shoe 2 that are connected successively from top to down.
Be right angle outside the end of described die 3, inner side is fillet.
Described cooling system comprises: the source of the gas 13, air inlet pipe 14 and the appendix 15 that are connected successively.
Described appendix 15 is 4, and is evenly distributed on the parting position surrounding of punch 4 and die 3.
Described appendix 15 is provided with two to venthole 16 arranged side by side, aims at die 3 a pair, and another is to aligning punch 4, blank holder 5 and drip molding 7.
Described temp measuring system comprises: thermal infrared imager 10, data wire 11 and computer 12, wherein: thermal infrared imager 10 is connected by data wire 11 with computer 12.
As shown in Figure 3, the present embodiment realizes measuring and controlling temp by following steps:
S1: patrix module and counterdie module are installed on press respectively.
S2: at the position installation infrared thermal imaging system 10 of distance patrix module one spacer segment, the lens axis of thermal infrared imager 10 is aimed at the fillet of die 3 end, calibrates temperature measurement accuracy according to the relevant temperature measuring parameter of thermometric condition setting thermal infrared imager 10.
Described temperature measuring parameter comprises: the camera lens of thermal infrared imager 10 is to the thermal emissivity rate of the distance at thermometric place, diel and ambient humidity.
S3: be placed in by high-strength steel sheet 6 on blank holder 5, die 3 is descending carries out flanging with blank holder 5 is closed, and after flanging completes, die 3 continues descending, until close with punch 4, completes punching press.
S4: open thermal infrared imager 10, lifts die 3, by thermal infrared imager 10 measure high-strength steel sheet 6 punching press complete after the temperature variations at fillet place of die 3 end.
S5: open source of the gas 13, lift with in the process of descending matched moulds at die 3, air blows to diel and drip molding 7 by the venthole 16 on appendix 15, lowers the temperature.
The temperature at the fillet place of described thermal infrared imager 10 real time record die 3 end, and the temperature data of record is shown by computer 12.
Described venthole 16 aim at the die 3 of diel, punch 4, blank holder 5 and high-strength steel sheet 6 complete punching press after stamping parts 7 blow heat radiation, reach cooling object.
Described temp measuring system is placed on patrix module and counterdie module, does not affect punching die structure, only need adjust the position of thermal infrared imager 10, just can be used for the temperature survey of multiple diel, and can Reusability.
Described cooling system adopts air cooling, is placed on patrix module and counterdie module, does not affect the structure complexity of diel and rigidity, and can repeatedly for the cooling of multiple diel.
The present embodiment is integrated with thermometric and temperature controlling function, can regulate the size of air-flow, ensure the desired operating temperatures of diel according to the change of measuring tempeature.
Claims (6)
1. the Temperature Control Type diel for high-strength steel sheet, it is characterized in that, comprise: cooling system, temp measuring system, the patrix module be arranged in parallel and counterdie module, wherein: patrix module and counterdie module matched moulds carry out stamping to described high-strength steel sheet, temperature variation data after temp measuring system collection patrix module punching completes, cooling system carries out air cooling cooling to the drip molding of patrix module, counterdie module and described high-strength steel sheet respectively according to temperature variation data; Described patrix module comprises: upper bolster and the die be arranged at below upper bolster; Described counterdie module comprises: the blank holder, punch and the die shoe that are connected successively from top to down; Described cooling system comprises: source of the gas, air inlet pipe and appendix, wherein: air is discharged by appendix and carried out cooling operations by source of the gas.
2. Temperature Control Type diel according to claim 1, is characterized in that, is right angle outside the end of described die, and inner side is fillet.
3. Temperature Control Type diel according to claim 1, is characterized in that, described upper bolster is connected by guide pillar with die shoe.
4. Temperature Control Type diel according to claim 1, is characterized in that, described appendix is evenly distributed on the parting position surrounding of patrix module and counterdie module.
5. Temperature Control Type diel according to claim 1, is characterized in that, described venthole aims at die, described drip molding, punch and blank holder respectively.
6. a process for stamping for Temperature Control Type diel according to above-mentioned arbitrary claim, is characterized in that, comprise the following steps:
S1: patrix module and counterdie module are installed on press respectively;
S2: at the position installation infrared thermal imaging system of distance patrix module one spacer segment, the lens axis of thermal infrared imager is aimed at the fillet of die end, calibrates temperature measurement accuracy according to the relevant temperature measuring parameter of thermometric condition setting thermal infrared imager;
S3: high-strength steel sheet is placed on blank holder, die is descending carries out flanging with blank holder is closed, and after flanging completes, die continues descending, until close with punch, completes punching press;
S4: open thermal infrared imager, lifts die, the temperature variations at die entrance place after being completed by the punching press of infrared heat image instrument measuring high-strength steel sheet;
S5: open source of the gas, lift with in the process of descending matched moulds at die, air blows to diel and drip molding by the venthole on appendix, lowers the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702749.5A CN105195623A (en) | 2015-10-26 | 2015-10-26 | Temperature control type stamping die for high-strength steel plate and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510702749.5A CN105195623A (en) | 2015-10-26 | 2015-10-26 | Temperature control type stamping die for high-strength steel plate and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213155A (en) * | 2017-11-29 | 2018-06-29 | 昆山邦泰汽车零部件制造有限公司 | A kind of intellectual monitoring stamping system |
| CN108526309A (en) * | 2017-03-06 | 2018-09-14 | 上海强精金属制品有限公司 | Progressive die for the processing of micro-wave oven connection sheet |
| CN108856528A (en) * | 2018-06-05 | 2018-11-23 | 海盐博友五金制造有限责任公司 | A kind of stamping equipment with refrigerating function |
| CN109530519A (en) * | 2018-12-29 | 2019-03-29 | 东莞市豪斯特热冲压技术有限公司 | A kind of mold and method for the production of deep drawn part |
| CN110238279A (en) * | 2019-05-31 | 2019-09-17 | 重庆大学 | A kind of quality intelligent monitoring stamping die |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526309A (en) * | 2017-03-06 | 2018-09-14 | 上海强精金属制品有限公司 | Progressive die for the processing of micro-wave oven connection sheet |
| CN108213155A (en) * | 2017-11-29 | 2018-06-29 | 昆山邦泰汽车零部件制造有限公司 | A kind of intellectual monitoring stamping system |
| CN108856528A (en) * | 2018-06-05 | 2018-11-23 | 海盐博友五金制造有限责任公司 | A kind of stamping equipment with refrigerating function |
| CN109530519A (en) * | 2018-12-29 | 2019-03-29 | 东莞市豪斯特热冲压技术有限公司 | A kind of mold and method for the production of deep drawn part |
| CN110238279A (en) * | 2019-05-31 | 2019-09-17 | 重庆大学 | A kind of quality intelligent monitoring stamping die |
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