CN103785747B - There is hot forming tool and the process for stamping thereof of trimming function - Google Patents
There is hot forming tool and the process for stamping thereof of trimming function Download PDFInfo
- Publication number
- CN103785747B CN103785747B CN201210419131.4A CN201210419131A CN103785747B CN 103785747 B CN103785747 B CN 103785747B CN 201210419131 A CN201210419131 A CN 201210419131A CN 103785747 B CN103785747 B CN 103785747B
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- China
- Prior art keywords
- blank holder
- thermoforming
- module
- upper bolster
- described upper
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- 238000009966 trimming Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 16
- 238000003856 thermoforming Methods 0.000 claims abstract description 55
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 description 14
- 238000005728 strengthening Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000008859 change Effects 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
- 238000005520 cutting process Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000000465 moulding 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
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
Abstract
The invention provides a kind of hot forming tool with trimming function, upper module minimum point is L1 apart from the distance of thermoforming plate, the thermoforming sheet-metal press working degree of depth is d1, the first nitrogen spring is provided with between described die holder and described upper blank holder, be provided with the second nitrogen spring between upper bolster and described upper module, between die shoe and described lower blank holder, be provided with a retractable push rod; Distance L2 between blank holder and thermoforming plate is less than L1, when thermoforming punching press completes, the decrement of the second nitrogen spring is d2, minimum range L3 between upper bolster lower surface and described upper blank holder upper surface is more than or equal to L1-L2+d1+d2, and the minimum range L4 between upper bolster lower surface and described upper module upper surface is greater than L2+L3-L1-d1.This hot forming tool in use, can complete trimming simultaneously, increase work efficiency in stamping forming process, reduces the manufacturing cost of thermoforming part.
Description
Technical field
The present invention relates to metal fever forming field, particularly relate to and a kind ofly in thermoforming process, the hot forming tool of trimming and the using method of this hot forming tool can be carried out to workpiece.
Background technology
Along with the development of auto industry, countries in the world to the safe, energy-conservation of automobile and discharge requirement more and more harsher, adopt unimach can alleviate automobile weight, realize energy-conservation and reduce discharging, the security of automobile can be improved again.Unimach can take 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).The mouldability of usual steel improves along with intensity and declines, generally by being divided into two steps to solve the contradiction of intensity and formability shaping and strengthening.Thermoforming is a kind of new technology shaping and strengthening being divided into two step production superhigh intensity auto parts and components, and these auto parts and components utilize phase transformation strengthening to form martensite.The advantage of thermoforming part is to have the intensity, accurately shaping of superelevation, also can avoid the resilience problem of high strength steel cold forming.The part crossing thermoforming process manufacture has superhigh intensity, good dimensional accuracy, effectively can alleviate tare simultaneously, for the fuel economy improving automobile, promotion energy-saving and emission-reduction are significant, and therefore thermoforming part is more and more extensive as the application of important safety member in body in white structural member.
According to the difference of process, thermoforming process is divided into direct thermoforming and the shaping two kinds of techniques of indirect thermal.In direct thermoforming, sheet material directly by flat heater austenitizing, then puts into mould high speed shaping without preformed, once press depth arrives predetermined value, part will 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 heat parts austenitizing and thermoforming and quench hardening.In indirect thermal moulding process, the preformed of part can reduce the relative displacement between material and mould, thus reduces die surface wearing and tearing at high temperature.
After part carries out thermoforming, usually need to carry out trimming process, the manufacturing process of the thermoforming part of current application is separately carried out shaping and trimming usually, namely molding procedure completes the shaping of part and cooling, then by having cut the trimming of part, because the part tensile strength after shaping is too high, the general laser that adopts carries out trimming process.Adopt laser generally to need when carrying out trimming to be equipped with special cutting positioning fixture, technique is comparatively complicated, and adopting laser to carry out, 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 simultaneously can 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, the first nitrogen spring is provided with between described upper bolster and described upper blank holder, the second nitrogen spring is provided with between described upper bolster and described upper module, a retractable push rod is provided with between described die shoe and described lower blank holder, distance L2 between described upper blank holder and thermoforming plate is less than L1, when thermoforming punching press completes, the decrement of described 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 module upper surface is greater than L2+L3-L1-d1, and the maximum elastic force of described 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 invention also discloses a kind of using method of above-mentioned hot forming tool, it comprises the steps:
1) be placed on counterdie by thermoforming flitch and position, upper bolster is descending with press table, makes blank holder contact with lower blank holder the edge compressing thermoforming flitch;
2) upper bolster continues descending with press table, and under push rod thrust, blank holder maintains static, and upper module continues descending to coordinate with die shoe with upper bolster and carries out punch forming to thermoforming flitch;
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, in step 3) in when carrying out trimming, described thermoforming flitch temperature is more than 600 degree.
Preferably, in step 3) complete after, pressurize cooling is carried out to forming part.
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, trimming can be completed in stamping forming process simultaneously, like this part punching is shaping complete after just without the need to re-using laser, trimming process is carried out to part, thus effectively can 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 when carrying out trimming state.
Element numbers explanation
1 upper bolster
2 first nitrogen springs
Blank holder on 3
4 times blank holders
5 push rods
6 die shoes
7 lower modules
8 thermoforming flitch
9 upper modules
10 second nitrogen springs
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 4.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used 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, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
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 above counterdie, and patrix is relative with counterdie position.Patrix comprises upper bolster 1, upper blank holder 3 and upper module 9, upper blank holder 3 is positioned at the outside of upper module 9, 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 9 is relative with lower module 7 position, and upper blank holder 3 is relative with lower blank holder 4 position.The first nitrogen spring 2 is provided with between upper bolster 1 and upper blank holder 3, the second nitrogen spring 10 is provided with between upper bolster 1 and upper module 9, be provided with a retractable push rod 5 between die shoe 6 and lower blank holder 4, when the pressure that push rod 5 is subject to is greater than its active force, push rod 5 inwardly bounces back.
This hot forming tool is in the original state of thermoforming punching press, i.e. the first nitrogen spring 2, when second nitrogen spring 10 is all in uncompressed state, thermoforming flitch 8 is placed on lower module and lower blank holder and locates, suppose that upper module 9 minimum point is L1 apart from the distance of thermoforming plate, when this part punching is shaping, 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, then go up blank holder 3 and should be less than L1 apart from the distance L2 of thermoforming plate, minimum range L3 between upper bolster 1 lower surface and upper blank holder 3 upper surface should be more than or equal to L1-L2+d1+d2, minimum range L4 between the lower surface of upper bolster 1 and upper module 9 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.
Thermoforming flitch 8 in use, is first placed on counterdie and positions by this hot forming tool, 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.During upper bolster 1 L2 distance descending with press table, upper blank holder 3 contacts with lower blank holder 4 and is compressed (as shown in Figure 2) at the edge of thermoforming flitch 8, can prevent workpiece in punching course from occurring fold like this.
When upper bolster 1 continues to be displaced downwardly to L1 distance with press table, upper module 10 contacts with thermoforming flitch 8, and 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 so shaping (as shown in Figure 3) of part.
Part punching is shaping complete after, known as calculated, upper bolster 1 distance descending relative to upper blank holder 3 is L1-L2+d1+d2, upper bolster 1 is d2 relative to the Bottom Runby of upper module, and the minimum range L3 between upper bolster 1 lower surface and upper blank holder 3 upper surface is more than or equal to L1-L2+d1+d2, therefore upper bolster 1 just or will continue descending will contact with upper blank holder 3, thus make to become between upper bolster 1 and upper blank holder 3 to be rigidly connected, simultaneously because the distance of L4 is greater than L2+L3-L1-d1, space is still had as calculated between known upper bolster and upper module, therefore press can drive upper bolster continuation descending.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 is formed is fixed on, maintain static between lower module, the edge of such thermoforming flitch 8 and part main body generation relative motion, so just can complete the trimming operation (as shown in Figure 4) to part.
When carrying out trimming operation, the temperature of thermoforming flitch 8 should control more than 600 degree, and now the tensile strength of thermoforming flitch 8 is lower than 600 MPas, well below the shaping intensity terminated after quenching, the edge of thermoforming flitch is very easy to depart from from part main body, and not easily produces burr.Press directly can come downwards to that upper bolster 1 is descending to be contacted with upper module 9, namely upper bolster 1 pier after death needs to carry out pressurize cooling immediately, effectively can increase the intensity of part like this, pressurize has cooled carries out Quenching Treatment afterwards to part, and the whole punching course of such part can complete.
This hot forming tool in use, trimming can be completed in stamping forming process simultaneously, like this part punching is shaping complete after just without the need to re-using laser, trimming process is carried out to part, thus effectively can save part process time, increase work efficiency, reduce the manufacturing cost of thermoforming part.In sum, the present invention effectively overcomes 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 without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (4)
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, 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, it is characterized in that: between described upper bolster and described upper blank holder, be provided with the first nitrogen spring, the second nitrogen spring is provided with between described upper bolster and described upper module, a retractable push rod is provided with between described die shoe and described lower blank holder, distance L2 between described upper blank holder and thermoforming plate is less than L1, when thermoforming punching press completes, the decrement of described 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 module upper surface is greater than L2+L3-L1-d1, the maximum elastic force of described first nitrogen spring is less than the active force of described push rod, 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.
2. adopt a process for stamping for hot forming tool described in claim 1, it is characterized in that, it comprises the steps:
1) be placed on counterdie by thermoforming flitch and position, upper bolster is descending with press table, makes blank holder contact with lower blank holder the edge compressing thermoforming flitch;
2) upper bolster continues descending with press table, and under push rod thrust, blank holder maintains static, and upper module continues descending to coordinate with die shoe with upper bolster and carries out punch forming to thermoforming flitch;
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.
3. the process for stamping of hot forming tool according to claim 2, is characterized in that: in step 3) in when carrying out trimming, described thermoforming flitch temperature is more than 600 degree.
4. the process for stamping of hot forming tool according to claim 2, is characterized in that: in step 3) complete after, pressurize cooling is carried out to forming part.
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 CN103785747A (en) | 2014-05-14 |
| CN103785747B true 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7699595B2 (en) * | 2004-07-19 | 2010-04-20 | 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 |
| 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 |
| IT1391769B1 (en) * | 2008-11-13 | 2012-01-27 | Persico Spa | APPARATUS FOR THE FORMING OF PANELS |
| 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 |
| DE102011012499B4 (en) * | 2011-02-25 | 2016-06-16 | Benteler Sgl Gmbh & Co. Kg | Apparatus and method for producing a fiber composite workpiece |
| 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 |
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2012
- 2012-10-26 CN CN201210419131.4A patent/CN103785747B/en not_active Expired - Fee Related
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| CN103785747A (en) | 2014-05-14 |
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