CN103785747A - Thermal forming mold with trimming function and stamping method of thermal forming mold - Google Patents
Thermal forming mold with trimming function and stamping method of thermal forming mold Download PDFInfo
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- CN103785747A CN103785747A CN201210419131.4A CN201210419131A CN103785747A CN 103785747 A CN103785747 A CN 103785747A CN 201210419131 A CN201210419131 A CN 201210419131A CN 103785747 A CN103785747 A CN 103785747A
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- blank holder
- thermoforming
- module
- upper bolster
- bolster
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- 238000009966 trimming Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 238000003856 thermoforming Methods 0.000 claims description 47
- 238000004080 punching Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 18
- 238000005728 strengthening Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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Abstract
The invention provides a thermal forming mold with a trimming function. The distance from the lowest point of an upper mold block to a thermal forming plate is L1, and the stamping depth of the thermal forming plate is d1. A first nitrogen spring is arranged between an upper mold base and an upper blank holder, a second nitrogen spring is arranged between the upper mold base and the upper mold block, and a retractable pressing rod is arranged between a lower mold base and a lower blank holder. The distance L2 between the upper blank holder and the thermal forming plate is smaller than L1. The compression amount of the second nitrogen spring is d2 after thermal forming stamping is completed. The minimum distance L3 between the lower surface of the upper mold base and the upper surface of the upper blank holder is larger than or equal to L1-L2+d1+d2, and the minimum distance L4 between the lower surface of the upper mold base and the upper surface of the upper mold base is larger than L2+L3-L1-d1. During usage, trimming can be completed during stamping forming, so that the work efficiency is improved, and thermal formed part manufacture costs are reduced.
Description
Technical field
The present invention relates to metal fever forming field, particularly relate to a kind of using method that can carry out hot forming tool and this hot forming tool of trimming in thermoforming process to workpiece.
Background technology
Along with the development of auto industry, countries in the world are more and more harsher to the requirement of the safe, energy-conservation of automobile and discharge, adopt unimach can alleviate automobile weight, realize energy-conservation and reduce discharging the security that can improve again automobile.Unimach can be taked following strengthening mechanism: solution strengthening (interstitial atom and displaced atom), precipitation strength (carbide precipitate such as Ti, Nb, V, Mo), crystal grain thinning, dislocation strengthening and phase transformation strengthening (martensite).Conventionally the mouldability of steel, along with intensity improves and declines, generally can solve by moulding and strengthening are divided into two steps the contradiction of intensity and formability.Thermoforming is by moulding and strengthens a kind of new technology that is divided into two step production superhigh intensity auto parts and components, and these auto parts and components utilize phase transformation strengthening to form martensite.It is accurate that the advantage of thermoforming part is to have intensity, the moulding of superelevation, also can avoid the resilience problem of high strength steel cold forming.The part of crossing thermoforming process manufacture has superhigh intensity, good dimensional accuracy, can effectively alleviate tare simultaneously, for the fuel economy that improves automobile, promotion energy-saving and emission-reduction are significant, and therefore the application in body in white structural member is more and more extensive as important safety member for thermoforming part.
According to the difference of operation process, thermoforming process is divided into direct heat moulding and two kinds of techniques of indirect thermal moulding.In direct heat moulding, sheet material directly heats austenitizing by flat board without preformed, then puts into the moulding of mould high speed, once press depth arrives predetermined value, part will be immediately by quench hardening.In indirect forming, first material is molded into the 90%-95% of net shape in conventional cold forming die, then by preformed part heating austenitizing thermoforming and quench hardening.In indirect thermal moulding process, the preformed of part can reduce the relative displacement between material and mould, thereby reduces die surface wearing and tearing at high temperature.
Part carries out after thermoforming, conventionally need to carry out trimming processing, the manufacturing process of the thermoforming part of application is separately carried out moulding and trimming conventionally at present, be that molding procedure completes the moulding of part and cooling, then complete the trimming of part by cutting, because the part tensile strength after moulding is too high, generally adopt laser to carry out trimming processing.While adopting laser to carry out trimming, generally need to be equipped with special cutting positioning fixture, technique is comparatively complicated, and employing laser carries out, and cutting production cost is higher and operating efficiency is lower.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of hot forming tool that can simultaneously carry out trimming in thermoforming process.
For achieving the above object and other relevant objects, the invention provides a kind of hot forming tool with trimming function, comprise patrix, counterdie, described patrix comprises upper bolster, upper blank holder and upper module, described counterdie comprises die shoe, lower blank holder and lower module, described upper module is relative with described lower module position, described upper blank holder is relative with described lower blank holder position, in the original state of thermoforming punching press, described upper module minimum point is L1 apart from the distance of thermoforming plate, the thermoforming sheet-metal press working degree of depth is d1, between described upper bolster and described upper blank holder, be provided with the first nitrogen spring, between described upper bolster and described upper module, be provided with the second nitrogen spring, between described die shoe and described lower blank holder, be provided with a retractable push rod, distance L 2 between described upper blank holder and thermoforming plate is less than L1, when thermoforming punching press completes, the decrement of described the second nitrogen spring is d2, minimum range L3 between described upper bolster lower surface and described upper blank holder upper surface is more than or equal to L1-L2+d1+d2, minimum range L4 between described upper bolster lower surface and described upper bolster upper surface is greater than L2+L3-L1-d1, and the maximum elastic force of described the first nitrogen spring is less than the active force of described push rod.
Preferably, described upper blank holder is positioned at the outside of described upper module, and described lower blank holder is positioned at the outside of described lower module.
The using method that the invention also discloses a kind of above-mentioned hot forming tool, it comprises the steps:
1) thermoforming flitch is placed on counterdie and is positioned, upper bolster is descending with press table, makes blank holder contact the edge that compresses thermoforming flitch with lower blank holder;
2) upper bolster continue with press table descending, under push rod thrust on blank holder maintain static, upper module continues descendingly to coordinate thermoforming flitch is carried out to punch forming with die shoe with upper bolster;
3) upper bolster continues descending with press table, blank holder upper surface is contacted with upper bolster lower surface, under press thrust, upper blank holder overcomes push rod thrust and moves down, until upper bolster lower surface contacts with upper module upper surface, upper blank holder, lower blank holder move down and make that forming part edge is cut completes trimming.
Preferably, carry out trimming in step 3) time, described thermoforming flitch temperature is more than 600 degree.
Preferably, after step 3) completes, forming part is carried out to pressurize cooling.
As mentioned above, hot forming tool and the using method thereof with trimming function of the present invention, there is following beneficial effect: this hot forming tool in use, can in stamping forming process, complete trimming simultaneously, after completing, part punching moulding just without re-using laser, part is carried out to trimming processing like this, thereby can effectively save part process time, increase work efficiency, reduce the manufacturing cost of thermoforming part.
Accompanying drawing explanation
Fig. 1 is the structural representation of hot forming tool original state of the present invention.
Fig. 2 is the structural representation of hot forming tool blank holder stitching state of the present invention.
Fig. 3 is the structural representation of hot forming tool part punching state of the present invention.
Fig. 4 is the structural representation of hot forming tool of the present invention while carrying out trimming state.
Element numbers explanation
The specific embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this description below.
Refer to Fig. 1 to Fig. 4.Notice, appended graphic the illustrated structure of this description, ratio, size etc., all contents in order to coordinate description to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the present invention without essence.
As shown in Figure 1, the invention provides a kind of hot forming tool with trimming function, comprise upper die and lower die, patrix is positioned at counterdie top, and patrix is relative with counterdie position.Patrix comprises upper bolster 1, upper blank holder 3 and upper module 10, upper blank holder 3 is positioned at the outside of upper module 10, counterdie comprises die shoe 6, lower blank holder 4 and lower module 7, lower blank holder 4 is positioned at the outside of lower module 7, upper module 10 is relative with lower module 7 positions, and upper blank holder 3 is relative with lower blank holder 4 positions.Between upper bolster 1 and upper blank holder 3, be provided with the first nitrogen spring 2, between upper bolster 1 and upper module 9, be provided with the second nitrogen spring 10, between die shoe 6 and lower blank holder 4, be provided with a retractable push rod 5, when the pressure being subject to when push rod 5 is greater than its active force, push rod 5 inwardly bounces back.
The original state of this hot forming tool in thermoforming punching press, i.e. the first nitrogen spring 2, the second nitrogen spring 10 is all in the time of uncompressed state, thermoforming flitch 8 is placed on lower module and lower blank holder and is located, suppose that upper module 9 minimum points are L1 apart from the distance of thermoforming plate, when this part punching moulding, the thermoforming sheet-metal press working degree of depth is d1, when punching press completes, the decrement of the second nitrogen spring 10 is d2, go up blank holder 3 and should be less than L1 apart from the distance L 2 of thermoforming plate, minimum range L3 between upper bolster 1 lower surface and upper blank holder 3 upper surfaces should be more than or equal to L1-L2+d1+d2, minimum range L4 between the lower surface of upper bolster 1 and upper bolster upper surface should be greater than L2+L3-L1-d1, and the maximum elastic force of the first nitrogen spring 2 should be less than the active force of push rod 5.
This hot forming tool in use, is first placed on thermoforming flitch 8 on counterdie and positions, and the edge of thermoforming flitch 8 is placed on lower blank holder 4.Upper bolster 1 is connected with press, drives upper bolster 1 to move down by press.Upper bolster 1 with the descending L2 of press table apart from time, upper blank holder 3 contacts with lower blank holder 4 edge of thermoforming flitch 8 is compressed to (as shown in Figure 2), can prevent that like this fold appears in workpiece in punching course.
When upper bolster 1 with press table continue to be displaced downwardly to L1 apart from time, upper module 10 contacts with thermoforming flitch 8, upper bolster 1 continues to move down and can carry out punch forming to part.Descending along with upper bolster 1, upper module 9 makes thermoforming plate 8 produce distortion under the effect of the second nitrogen spring 10, until upper module 9 is completely closed with lower module 7, can make like this moulding (as shown in Figure 3) of part.
After part punching moulding completes, known as calculated, upper bolster 1 distance descending with respect to upper blank holder 3 is L1-L2+d1+d2, upper bolster 1 is d2 with respect to the Bottom Runby of upper module, and minimum range L3 between upper bolster 1 lower surface and upper blank holder 3 upper surfaces is more than or equal to L1-L2+d1+d2, therefore upper bolster 1 will just or continue descending will contact with upper blank holder 3, thereby make to become and be rigidly connected between upper bolster 1 and upper blank holder 3, simultaneously because the distance of L4 is greater than L2+L3-L1-d1, between known upper bolster and upper module, still have space as calculated, therefore it is descending that press can drive upper bolster continuation.Along with the continuation of press is descending, the pressure that upper blank holder 3 is subject to will be greater than the active force of push rod 5, push rod 5 will bounce back, along with the retraction of push rod 5, lower blank holder 4, upper blank holder 3 moves down under press pressure effect, the edge of thermoforming flitch 8 is sandwiched in, between lower blank holder, when upper, when lower blank holder moves down, the edge of thermoforming flitch 8 also moves down thereupon, and the part that thermoforming flitch 8 forms is fixed on, between lower module, maintain static, the edge of thermoforming flitch 8 and part main body generation relative motion like this, so just can complete the trimming operation (as shown in Figure 4) to part.
In the time carrying out trimming operation, more than the temperature of thermoforming flitch 8 should be controlled at 600 degree, now the tensile strength of thermoforming flitch 8, lower than 600 MPas, finishes the intensity after quenching well below moulding, the edge of thermoforming flitch is very easy to depart from from part main body, and is difficult for producing burr.Press can directly come downwards to that upper bolster 1 is descending to be contacted with upper module 9, it is cooling to be that upper bolster 1 pier after death needs to carry out immediately pressurize, can effectively increase like this intensity of part, pressurize is cooling carries out Quenching Treatment to part after completing, and the whole punching course of part can complete like this.
This hot forming tool in use, can in stamping forming process, complete trimming simultaneously, after completing, part punching moulding just without re-using laser, part is carried out to trimming processing like this, thereby can effectively save part process time, increase work efficiency, reduce the manufacturing cost of thermoforming part.In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (5)
1. one kind has the hot forming tool of trimming function, comprise patrix, counterdie, described patrix comprises upper bolster, upper blank holder and upper module, described counterdie comprises die shoe, lower blank holder and lower module, described upper module is relative with described lower module position, described upper blank holder is relative with described lower blank holder position, in the original state of thermoforming punching press, the distance of described upper module apart from minimum point apart from thermoforming plate is L1, the thermoforming sheet-metal press working degree of depth is d1, it is characterized in that: between described upper bolster and described upper blank holder, be provided with the first nitrogen spring, between described upper bolster and described upper module, be provided with the second nitrogen spring, between described die shoe and described lower blank holder, be provided with a retractable push rod, distance L 2 between described upper blank holder and thermoforming plate is less than L1, when thermoforming punching press completes, the decrement of described the second nitrogen spring is d2, minimum range L3 between described upper bolster lower surface and described upper blank holder upper surface is more than or equal to L1-L2+d1+d2, minimum range L4 between described upper bolster lower surface and described upper bolster upper surface is greater than L2+L3-L1-d1, and the maximum elastic force of described the first nitrogen spring is less than the active force of described push rod.
2. the hot forming tool with trimming function according to claim 1, is characterized in that: described upper blank holder is positioned at the outside of described upper module, described lower blank holder is positioned at the outside of described lower module.
3. a process for stamping that adopts hot forming tool described in claim 1, is characterized in that, it comprises the steps:
1) thermoforming flitch is placed on counterdie and is positioned, upper bolster is descending with press table, makes blank holder contact the edge that compresses thermoforming flitch with lower blank holder;
2) upper bolster continue with press table descending, under push rod thrust on blank holder maintain static, upper module continues descendingly to coordinate thermoforming flitch is carried out to punch forming with die shoe with upper bolster;
3) upper bolster continues descending with press table, blank holder upper surface is contacted with upper bolster lower surface, under press thrust, upper blank holder overcomes push rod thrust and moves down, until upper bolster lower surface contacts with upper module upper surface, upper blank holder, lower blank holder move down and make that forming part edge is cut completes trimming.
4. the process for stamping of hot forming tool according to claim 3, is characterized in that: carry out trimming in step 3) time, described thermoforming flitch temperature is more than 600 degree.
5. the process for stamping of hot forming tool according to claim 3, is characterized in that: after step 3) completes, forming part is carried out to pressurize cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419131.4A CN103785747B (en) | 2012-10-26 | 2012-10-26 | There is hot forming tool and the process for stamping thereof of trimming function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419131.4A CN103785747B (en) | 2012-10-26 | 2012-10-26 | There is hot forming tool and the process for stamping thereof of trimming function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103785747A true CN103785747A (en) | 2014-05-14 |
| CN103785747B CN103785747B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210419131.4A Expired - Fee Related CN103785747B (en) | 2012-10-26 | 2012-10-26 | There is hot forming tool and the process for stamping thereof of trimming function |
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| Country | Link |
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| CN (1) | CN103785747B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108372235A (en) * | 2018-02-12 | 2018-08-07 | 南京星乔威泰克汽车零部件有限公司 | A kind of forming trimming full-automatic heat diel of martensite steel and manufacturing process |
| CN108687243A (en) * | 2018-04-27 | 2018-10-23 | 吉利汽车研究院（宁波）有限公司 | A kind of mold for realizing blocking function without locking press |
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| US20060012075A1 (en) * | 2004-07-19 | 2006-01-19 | R + S Technik Gmbh | Method and apparatus for molding a laminated trim component without use of slip frame |
| DE102004063657B4 (en) * | 2004-12-31 | 2009-08-20 | Faurecia Innenraum Systeme Gmbh | Method for producing a component from a decorative layer and a carrier layer |
| US20100018277A1 (en) * | 2008-07-25 | 2010-01-28 | Christian Hielscher | Apparatus for hot-forming, press-quenching, and cutting semifinished hardenable-steel workpiece |
| EP2186620A1 (en) * | 2008-11-13 | 2010-05-19 | Persico S.p.A. | panel forming apparatus |
| CN201659207U (en) * | 2010-04-22 | 2010-12-01 | 李国强 | Forming mold for automobile aluminum work pieces |
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| CN202028688U (en) * | 2011-03-11 | 2011-11-09 | 江苏中伟业通讯设备有限公司 | Feed line window aluminium cylinder punching die |
| CN202398705U (en) * | 2011-12-01 | 2012-08-29 | 成都三士达科技有限公司 | Flip-over type pinch-trim die |
| DE102011012499A1 (en) * | 2011-02-25 | 2012-08-30 | Benteler Sgl Gmbh & Co. Kg | Device for manufacturing fiber composite workpiece i.e. fiber composite web, for manufacturing B-column of motor vehicle, has additional segment supported in base plate in pivotable manner by spring element and projecting into hollow space |
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2012
- 2012-10-26 CN CN201210419131.4A patent/CN103785747B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060012075A1 (en) * | 2004-07-19 | 2006-01-19 | R + S Technik Gmbh | Method and apparatus for molding a laminated trim component without use of slip frame |
| DE102004063657B4 (en) * | 2004-12-31 | 2009-08-20 | Faurecia Innenraum Systeme Gmbh | Method for producing a component from a decorative layer and a carrier layer |
| US20100018277A1 (en) * | 2008-07-25 | 2010-01-28 | Christian Hielscher | Apparatus for hot-forming, press-quenching, and cutting semifinished hardenable-steel workpiece |
| EP2186620A1 (en) * | 2008-11-13 | 2010-05-19 | Persico S.p.A. | panel forming apparatus |
| CN201659207U (en) * | 2010-04-22 | 2010-12-01 | 李国强 | Forming mold for automobile aluminum work pieces |
| CN201791830U (en) * | 2010-09-21 | 2011-04-13 | 南京工程学院 | Drawing, extruding and cutting combined die |
| DE102011012499A1 (en) * | 2011-02-25 | 2012-08-30 | Benteler Sgl Gmbh & Co. Kg | Device for manufacturing fiber composite workpiece i.e. fiber composite web, for manufacturing B-column of motor vehicle, has additional segment supported in base plate in pivotable manner by spring element and projecting into hollow space |
| CN202028688U (en) * | 2011-03-11 | 2011-11-09 | 江苏中伟业通讯设备有限公司 | Feed line window aluminium cylinder punching die |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108372235A (en) * | 2018-02-12 | 2018-08-07 | 南京星乔威泰克汽车零部件有限公司 | A kind of forming trimming full-automatic heat diel of martensite steel and manufacturing process |
| CN108372235B (en) * | 2018-02-12 | 2020-11-13 | 南京星乔威泰克汽车零部件有限公司 | Full-automatic hot stamping die and method for forming edge cutting of martensitic steel |
| CN108687243A (en) * | 2018-04-27 | 2018-10-23 | 吉利汽车研究院（宁波）有限公司 | A kind of mold for realizing blocking function without locking press |
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| Publication number | Publication date |
|---|---|
| CN103785747B (en) | 2015-12-02 |
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Granted publication date: 20151202 |