CN1611310A - Press working method - Google Patents
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- CN1611310A CN1611310A CN 200410087990 CN200410087990A CN1611310A CN 1611310 A CN1611310 A CN 1611310A CN 200410087990 CN200410087990 CN 200410087990 CN 200410087990 A CN200410087990 A CN 200410087990A CN 1611310 A CN1611310 A CN 1611310A
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Abstract
The present invention provides a press working method, which does not need special heating unit, can be formed by a compact device, can efficiently heat difficult-to-work materials such as magnesium alloy, high-tension steel and the like or steel plates for heat treatment of a press quenching processing method according to materials or shapes, can easily perform press forming, and specifically comprises the following steps: a blank segment is provided on the upstream side in the feeding direction of a predetermined processing segment of a progressive die, and an electrode necessary for energizing a workpiece is arranged in the blank segment, so that press working is performed in the predetermined processing segment after an energizing heating step of heating the workpiece by an energizing action of the electrode is performed in the blank segment.
Description
Technical field
The present invention relates to a kind of processing method for stamping that is suitable for the heat treatment of difficult-to-machine material such as magnesium alloy for example or titanium alloy, stainless steel, high tension steel or die quenching processing method with the punch process of steel plate.
Background technology
Generally, punch process is divided into stamping-out processing, bending machining, deep-draw processing, shaping processing, compression process etc., and, processing method separately is divided into, temperature-hot-working of processing again after being heated to material more than the room temperature before processing and the cold working of rapidoprint at room temperature.
, with the demand of difficult-to-machine materials such as punch process shaping magnesium alloy or titanium alloy, stainless steel, high tension steel, the tendency of increase will be arranged from now on.The punch process of these difficult-to-machine materials is when carrying out with cold working, owing to cracking or chapping, so preferably carry out with hot-working or temperature processing.In addition, in the punch forming of adopting tensile strength above the parts of the high tension steel of 100MPa level, the situation of the die quenching processing method of adopt after the temperature that heat treatment is heated to austenitizing with steel plate, cooling off, quench again in metal pattern with punch forming has simultaneously increased.Therefore, determine processing method for stamping good not on, heating material how importantly.
In the past, in temperature processing or hot-working, method as the heating machined material, known have: method, (B) that (A) adopts heating furnace to heat machined material uses by the heating means of the metal pattern clamping machined material of heater heat tracing and (for example, opens the 2001-252729 communique with reference to the spy.), (C) with metal pattern self as electrode, with the metal pattern clamping machined material energising of holding concurrently to its electrode, the method of utilizing Joule heat heating (for example, No. 3285903 communique, spy open flat 8-71684 communique with reference to special permission), (D) clamp the two ends of machined material with electrode, energising, utilize Joule heat heating method (for example, with reference to the spy open the 2002-18531 communique, the spy opens the 2002-248525 communique) etc.
But, in the method for the employing heating furnace of above-mentioned (A),, have maximization or the high problem of cost that causes equipment owing to need heater or conveyer in addition.In addition, owing to, prolong the transmitting range from the heating furnace to the metal, also there is the problem that significantly reduces the temperature of machined material because of the relation on the equipment.
In addition, in the method for employing by the metal pattern of heater heat tracing of above-mentioned (B), consider, exist the heating-up temperature of machined material to be limited in the following problem of annealing temperature of this metal pattern from the angle in metal pattern life-span.In addition, owing to compare with the machined material that will heat, ordinary circumstance needs the metal pattern of the big volume of heat tracing, so also there is the big problem of electric power consumption.
In addition, in the employing electrode of above-mentioned (C) was held concurrently the method for metal pattern, existence need be provided with the problem of the parts of energising heating usefulness in addition.In addition, owing to use as electrode, be difficult to local heat machined material, inefficient problem so also exist with metal pattern self.
In addition, as above-mentioned (D), switch on, utilize in the method for Joule heat heating, because the action that need clamp and unclamp machined material so there is the low problem of production efficiency, is difficult to be used for continuous processing at the two ends that clamp machined material with electrode.In addition, owing to the two ends that clamp machined material with electrode, the heating of switching on is so also exist the problem that is difficult to the local heat machined material.
Summary of the invention
The present invention proposes for addressing the above problem, purpose provides a kind of processing method for stamping, it does not need special heating unit, the device of the enough compactnesses of energy constitutes, according to material or shape, heat the heat treatment steel plate of difficult-to-machine materials such as magnesium alloy, high tension steel or die quenching processing method expeditiously, can carry out punch forming easily.
For achieving the above object, processing method for stamping of the present invention is to adopt the progressive die to carry out the processing method for stamping of punch process, it is characterized in that:
Stop dead band by upstream side setting at the feed direction of the processing sections of the regulation of the above-mentioned progressive die, stop the dead band configuration to the required electrode of machined material energising above-mentioned simultaneously, and when stopping after dead band carried out utilizing the energising of above-mentioned electrode to be used for heating the energising heating process of rapidoprint, carry out punch process at the processing sections of afore mentioned rules above-mentioned.
If employing the present invention, because processing sections with regulation, before the punch process machined material, stopping dead band to this machined material enforcement energising heating process, so machined material, even difficult-to-machine materials such as magnesium alloy, titanium alloy, stainless steel, high tension steel also can carry out punch forming at the processing sections of stipulating easily.In addition, owing to stop the dead band heating process of switching on the progressive die being located at,, can seek the densification of device formation so do not need special heating use parts.And, owing to be located at Joule heat that the energising effect of the electrode pair machined material that stops on the dead band the produces heating process of switching on by utilization, so can heat machined material expeditiously, simultaneously by current value or conduction time, the number of electrodes etc. of regulating action in machined material, can be according to the material of machined material, freely set heating-up temperature, in addition, by regulating the configuration of electrode, though can the local heat machined material or the shape difference of machined material also can heat desired position.In addition, owing to can carry out above-mentioned energising effect linkedly,, can not cause the reduction of speed of production as the conventional art that needs to clamp and unclamp with respect to machined material with the action of the progressive die.In addition, because only between the processing sections that stops dead band and regulation of the progressive die, carry out transmission action,, can prevent the oxidation of machined material simultaneously so the temperature of the machined material of heating can be reduced the minimum scope that is suppressed at by the machined material of energising heating process heating.
In the present invention, preferred above-mentioned energising heating process is carried out behind blank operation.If so, since in the laggard electrical heating operation that works of blank operation, thus can heat machined material more expeditiously, simultaneously, utilize the effect of heat insulation in the space that blank operation forms on machined material, can play the difficult effect of distributing towards periphery of heat at the heating position of machined material.
In addition, above-mentioned electrode, preferably the position with the heating of the needs of machined material disposes accordingly.So since with the position of the needs of machined material heating configured electrodes accordingly, so can heat machined material expeditiously according to processing content.
In addition, above-mentioned electrode, preferably the mode that can move along the direction of action of the above-mentioned progressive die simultaneously with the elastic force of accepting spring is provided with.If so; because the mode that can move along the direction of action of the above-mentioned progressive die simultaneously with the elastic force that can accept spring is provided with electrode; so; can relax the impulsive force when electrode can contact with machined material with switching on; the protection of electrode, machined material can be sought, the contact condition of electrode and machined material can be kept simultaneously well.In addition,, the time of contact (conduction time) of electrode and machined material can be regulated with switching on, thus, heat time heating time can be adjusted by adjusting electrode and the contact position that machined material can contact.
In addition, the above-mentioned dead band of stopping preferably when carrying out above-mentioned energising heating process, is interdicted from the outside by the above-mentioned progressive die.If so, when switching on heating process, interdicted from the outside by the above-mentioned progressive die owing to stop dead band, contact with electrode so can prevent people or thing really.In addition, by from the outside blocking, can also improve intensification efficient.
Description of drawings
Fig. 1 is the front view at main position that schematically illustrates the stamping machine of one embodiment of the present invention.
Fig. 2 is that the A-A direction of arrow from Fig. 1 is seen the primary structure key diagram of the 1st energising heating with metal pattern, wherein: be that figure, (b) of the state that can switch on of expression is the P-P view of expression (a) (a).
Fig. 3 is that the B-B direction of arrow from Fig. 1 is seen the primary structure key diagram of the 2nd energising heating with metal pattern, wherein: be that figure, (b) of the state that can switch on of expression is the Q-Q view of expression (a) (a).
Fig. 4 is the figure of band material stock layout of the punch process operation of present embodiment.
The specific embodiment
Below, with reference to accompanying drawing, the concrete embodiment of processing method for stamping of the present invention is described.
Fig. 1 is the front view at main position that schematically illustrates the stamping machine of one embodiment of the present invention.In addition, in Fig. 2, be that the A-A direction of arrow from Fig. 1 is seen the primary structure key diagram of the 1st energising heating with metal pattern, respectively expression show the figure (a) of the state that can switch on and (a) in P-P view (b).
The stamping machine 1 of present embodiment as shown in Figure 1, utilizes the sliding drive mechanism (all not shown) of servomotor as drive source, constituting in the mode of action drives slide plate 2 arbitrarily at above-below direction.In this stamping machine 1, between slide plate 2 and backing plate 3, the progressive die 4 of pressing a plurality of metal patterns of process sequence one row configuration is set,, processes continuously by the driving up and down of above-mentioned slide plate 2 for the machined material of sending into by not shown feeding device in this progressive die 45.
At the above-mentioned progressive die 4, from the upstream side of the feed direction represented with symbol F Fig. 1, be provided with respectively in order, dead band the 8, the 3rd processing sections the 9, the 2nd that stops of the 1st processing sections the 6, the 2nd processing sections the 7, the 1st stops dead band the 10, the 4th processing sections 11 and the 5th processing sections 12., stopping dead band in the so-called present embodiment herein, is the free segment of not carrying out on the punch process operation of punch process, is included in the two parts that stop dead band that stop dead band and be provided with arbitrarily that are provided with inevitably in the metal pattern design.In addition, if utilize the dead band of stopping of above-mentioned setting inevitably, the above-mentioned the 1st the dead band 8 and/or the above-mentioned the 2nd of stopping is set stops dead band 10, then with respect to the area that is provided with of the progressive die of in the past processing method for stamping, the increase that area is set that can make the progressive die 4 of present embodiment is zero or small.
On above-mentioned the 1st processing sections 6, set machined material 5 is implemented perforation processing, wear the perforation processing metal pattern 13 of guide hole.In addition, on above-mentioned the 2nd processing sections 7, the hourglass stamping-out processing metal pattern 14 of hourglass (hourglass) stamping-out is carried out in configuration to machined material 5.On above-mentioned the 3rd processing sections 9, the 1st cylinder deep-draw processing metal pattern 15 of a deep-draw processing is had an area of in configuration down to machined material 5.In addition, on above-mentioned the 4th processing sections 11, also disposing the direction opposite with this cylinder deep-draw processing of the 2nd cylinder deep-draw carry out cylinder deep-draw processing to to(for) the machined material 5 of implementing cylinder deep-draw processing in above-mentioned the 3rd processing sections 9 processes with metal pattern 16, on above-mentioned the 5th processing sections 12, the finishing metal pattern 17 that configuration is repaired machined material 5.In addition, stop on the dead band 10, dispose the 1st energising heating described later respectively and heat with metal pattern 19 with metal pattern 18 and the 2nd energising in the above-mentioned the 1st the dead band 8 and the 2nd of stopping.
Herein, above-mentioned each processing is with metal pattern 13,14,15,16,17 and above-mentioned each energising heating counterdie 13a～19a separately with metal pattern 18,19, be installed in the top lower basal plate 20 that is fixed on backing plate 3 above.In addition, above-mentioned each processing is with metal pattern 13,14,15,16,17 and above-mentioned each energising heating patrix 13b～19b separately with metal pattern 18,19, be installed in the top upper substrate 21 that is fixed on slide plate 2 below.In addition, between above-mentioned lower basal plate 20 and upper substrate 21, folder is established lead 22, with respect to lower basal plate 20, by these lead 22 guiding upper substrate 21 is set movably up and down also.
Be configured in the above-mentioned the 1st the 1st energising heating that stops dead band 8 with metal pattern 18, shown in Fig. 2 (a) and (b), the electrode 25 required to machined material 5 galvanizations is situated between by insulator 26, is installed in up and down on each metal pattern 18b, 18a, so constitutes.With in the metal pattern 18, these electrodes 25 with respect to being formed on discoid machined material 5, and being implemented the cylinder deep-draws and are added the position that need heat man-hour and dispose accordingly at the 3rd processing sections 9 in the 1st energising heating.So, can heat machined material 5 more expeditiously.In addition, use in the metal pattern 18 in the 1st energising heating, when the energising that utilizes above-mentioned desired electrode 25 is used for heating the energising heating process of machined material 5, these electrodes 25, shown in Fig. 2 (a), each metal pattern 18b, 18a up and down of metal pattern 18 used in the 1st energising heating that can pass through the part of the formation progressive die 4, interdicts from the outside.So, when switching on heating process, can prevent really that people or thing from contacting with electrode 25, can improve intensification efficient in addition.In addition, use in the metal pattern 18 in the 1st energising heating, with respect to lower basal plate 20, counterdie 18a, be provided with in the mode that can move up and down, between lower basal plate 20 and counterdie 18a, required compression disc spring 27 be set simultaneously along not shown guiding, above-mentioned required electrode 25 can be provided with the mode that the direction of action of metal pattern 18 moves along the 1st energising heating simultaneously with the elastic force that can accept compression disc spring 27.So, can relax the impulsive force when electrode 25 can contact with machined material 5 with switching on, can seek the protection of electrode 25, machined material 5 etc., can keep the contact condition of electrode 25 and machined material 5 simultaneously well.In addition,, the time of contact (conduction time) of electrode 25 and machined material 5 can be regulated with switching on, heat time heating time can be adjusted thus by adjusting electrode 25 and the contact position that machined material 5 can contact.In addition, also can replace above-mentioned compression disc spring 27, adopt gas cushion or die buffer pin etc.
In addition, being configured in the above-mentioned the 2nd the 2nd energising that stops dead band 10 heats with metal pattern 19, shown in Fig. 3 (a) and (b), the electrode 25 required to machined material 5 galvanizations, with with the 1st energising heating with the different configuration of metal pattern 18, Jie is installed in up and down on each metal pattern 19b, 19a by insulator 26, so constitutes.Use in the metal pattern 19 in the 2nd energising heating, these electrodes 25, with respect to implementing cylinder deep-draw processing machined material 5, with the corresponding configuration in position that further when the direction opposite with this cylinder deep-draw processing implemented cylinder deep-draw processing (below, this cylinder deep-draw processing is called " contrary cylinder deep-draw processing "), need heat at the 4th processing sections 11.So, can heat machined material 5 more expeditiously.So, even special-shaped machined material 5 also can heat expeditiously according to processing content.
Below, with reference to Fig. 1 and Fig. 4, the content of the punch process operation of present embodiment is described.Herein, in Fig. 4, the band material stock layout of the punch process operation of expression present embodiment.In addition, in Fig. 4, the segment number sign indicating number of each operation additional " K " expression.
At first, to sending into the machined material 5 in the progressive die 4 by feeding device (not shown),, on this machined material 5, wear 2 guide holes 30 (K1) with the processing of boring a hole of the 1st processing sections 6.In addition, these 2 guide holes 30 are locating holes, when length is sent in the progressive die 4 in accordance with regulations at the machined material 5 of the smooth rectification web-like by feeding device and with machined material 5, the guide hole 30 of machined material 5 is chimeric with the pilot pin of being located on this progressive die 4 (not shown), the position with respect to this progressive die location machined material 5 like this.
Then, on the 2nd processing sections 7, utilize the periphery (K2) of the moulding predetermined position on the hourglass stamping-out processing stamping-out machined material 5.Afterwards, stop on the dead band 8,, switch on, according to material this machined material 5 is heated to and carries out the optimum temperature (K3) that the cylinder deep-draw adds man-hour by the electrode 25 clamping machined materials 5 on metal pattern 18b, the 18a about being installed in the 1st.Then,, machined material 5 is implemented cylinder deep-draw processing, this machined material 5 is molded into cup-shaped (K4) at the 3rd processing sections 9.In addition, in above-mentioned stage K3,, for example, when machined material 5 is magnesium alloy, be 250 ℃ as the optimum temperature of machined material 5, be 100 ℃～150 ℃ when being SUS304, when being heat treatment, be about 900 ℃ with the die quenching processing method of steel plate.
Below, stop on the dead band 10 the 2nd, electrode 25 about utilization is installed on metal pattern 19b, the 19a, be clamped in above-mentioned stage K4 and be molded into the machined material 5 of cup-shaped, energising will be implemented contrary cylinder deep-draw to this machined material 5 that is molded into cup-shaped and add the position that need heat man-hour, is heated to optimum temperature (K5).Then, on the 4th processing sections 11, the machined material 5 of cup-shaped is implemented contrary cylinder deep-draw processing (K6).Afterwards, on the 5th processing sections 12, machined material 5 is repaired, be separated into waste material and moulding product (K7).
If employing present embodiment, because on the 3rd processing sections 9, machined material 5 is being implemented cylinder deep-draw first being processed, stop on the dead band 8 the 1st, this machined material 5 is implemented the energising heating process, simultaneously on the 4th processing sections 11, machined material 5 is being implemented contrary cylinder deep-draw first being processed, stop on the dead band 10 this machined material 5 is implemented the energising heating process the 2nd, so even machined material 5 is magnesium alloy, titanium alloy, stainless steel, difficult-to-machine materials such as high tension steel, on the 3rd processing sections 9, also can carry out cylinder deep-draw processing easily, on the 4th processing sections 11, also can carry out contrary cylinder deep-draw processing easily.
In addition, in the energising heating process of respectively stopping dead band 8,10, owing to behind the hourglass blank operation that has carried out the 2nd processing sections 7, carry out, so can heat machined material 5 more expeditiously, simultaneously, utilize the Space H that the hourglass blank operation forms, the effect of heat insulation of H ' (with reference to Fig. 4) on machined material 5, can play the difficult effect of distributing towards periphery of heat at the heating position of machined material 5.
In addition, if adopt present embodiment, have the following advantages, that is:
(1) owing to carry out the above-mentioned heating process of respectively switching on the dead band 8,10 being located at respectively stopping on the progressive die 4,, can seek the densification of device formation so do not need special heating use parts.
(2) because by being provided in the Joule heat of the energising effect formation that respectively stops 25 pairs of machined materials 5 of dead band 8,10 top electrodes, carry out the above-mentioned heating process of respectively switching on, so can heat machined material 5 expeditiously, simultaneously by current value or conduction time, the number of electrodes etc. of regulating action in machined material 5, can freely set heating-up temperature according to the material of machined material 5.
(3) in addition, owing to can carry out the energising effect of 25 pairs of machined materials 5 of electrode linkedly with the action of the progressive die 4, so can not reduce speed of production.
(4) owing to utilize the transmission action of the machined material 5 of energising heating process heating, only stop between dead band 8 and the 3rd processing sections 9 at the 1st on the progressive die 4, reaching the 2nd stops carrying out between dead band 10 and the 4th processing sections 12, so the temperature of the machined material 5 of heating can be reduced the minimum scope that is suppressed at, can prevent the oxidation of machined material 5 simultaneously.
Claims (5)
1. a processing method for stamping is to adopt the progressive die to carry out the processing method for stamping of punch process, it is characterized in that:
Stop dead band by upstream side setting at the feed direction of the processing sections of the regulation of the above-mentioned progressive die, stop the dead band configuration to the required electrode of machined material energising above-mentioned simultaneously, and when stopping after dead band carried out utilizing the energising of above-mentioned electrode to be used for heating the energising heating process of rapidoprint above-mentioned, the processing sections at afore mentioned rules carries out punch process again.
2. processing method for stamping as claimed in claim 1, wherein: above-mentioned energising heating process, behind blank operation, carry out.
3. processing method for stamping as claimed in claim 1, wherein: above-mentioned electrode, dispose accordingly with the position of the needs of machined material heating.
4. punching press adding method as claimed in claim 1, wherein: above-mentioned electrode, when accepting the elastic force of spring, the mode that can move along the direction of action of the above-mentioned progressive die is provided with.
5. processing method for stamping as claimed in claim 1, wherein: the above-mentioned dead band of stopping, when carrying out above-mentioned energising heating process, interdict from the outside by the above-mentioned progressive die.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003370029A JP2005131665A (en) | 2003-10-30 | 2003-10-30 | Press-working method |
| JP2003370029 | 2003-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1611310A true CN1611310A (en) | 2005-05-04 |
Family
ID=34647160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410087990 Pending CN1611310A (en) | 2003-10-30 | 2004-10-26 | Press working method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005131665A (en) |
| CN (1) | CN1611310A (en) |
| TW (1) | TW200524688A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101896292A (en) * | 2007-12-13 | 2010-11-24 | 爱信高丘株式会社 | Hot press forming device and hot press forming method |
| CN101970149A (en) * | 2008-05-16 | 2011-02-09 | 丰田自动车株式会社 | Press-forming method and press-formed part |
| CN102688944A (en) * | 2012-06-15 | 2012-09-26 | 江苏大学 | Adjustable heating and cooling integrated hot forming die |
| CN104742189A (en) * | 2015-03-03 | 2015-07-01 | 青州市塑霸机械有限公司 | Special-shaped nonmetallic surface sand grain attached material blanking equipment |
| CN104894352A (en) * | 2014-02-07 | 2015-09-09 | 本特勒尔汽车技术有限公司 | Thermoforming line and method for the preparation of thermoformed sheet metal products |
| CN105107939A (en) * | 2015-09-18 | 2015-12-02 | 武汉理工大学 | Continuous hot stamping device and technology |
| CN106166581A (en) * | 2015-05-20 | 2016-11-30 | 现代自动车株式会社 | Grading shaped device and forming method thereof |
| CN111545649A (en) * | 2020-05-11 | 2020-08-18 | 燕山大学 | Metal plastic forming method based on self-resistance heating |
| CN111822570A (en) * | 2020-07-10 | 2020-10-27 | 首钢集团有限公司 | Heating hot stamping strengthening process |
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| JP4815997B2 (en) * | 2005-10-26 | 2011-11-16 | 日産自動車株式会社 | Press molding method and press molding apparatus |
| JP4982724B2 (en) * | 2007-05-18 | 2012-07-25 | ユニプレス株式会社 | Blank material for die quench press |
| JP4945506B2 (en) * | 2008-04-24 | 2012-06-06 | ジヤトコ株式会社 | Cup-shaped material molding apparatus and molding method |
| CN102575310B (en) | 2009-10-16 | 2013-11-20 | 丰田自动车株式会社 | Energization heating method and energization heating device |
| KR100963796B1 (en) | 2009-12-29 | 2010-06-17 | 대원강업주식회사 | Manufacturing system by continuous warm rolling press for frame using magnesium panel |
| JP5508059B2 (en) * | 2010-02-26 | 2014-05-28 | アイシン高丘株式会社 | Combined press machine |
| JP2011189402A (en) * | 2010-03-17 | 2011-09-29 | Jfe Steel Corp | Resistance heating method of metal sheet |
| JP5471817B2 (en) * | 2010-05-19 | 2014-04-16 | トヨタ自動車株式会社 | Electric heating method |
| FR3021565B1 (en) * | 2014-06-02 | 2017-01-13 | Centre Technique Des Ind Mec | METHOD AND INSTALLATION FOR PROGRESSIVE TRANSFORMATION OF METALLIC STRIP MATERIAL |
| CN104438840B (en) * | 2014-11-21 | 2016-08-24 | 东莞市豪斯特热冲压技术有限公司 | A kind of high-strength part multistation thermal forming device and thermo shaping method |
| EP3067129A1 (en) * | 2015-03-09 | 2016-09-14 | Autotech Engineering, A.I.E. | Press systems and methods |
| JP7066934B2 (en) * | 2018-10-10 | 2022-05-16 | 地方独立行政法人東京都立産業技術研究センター | Titanium alloy drawing method |
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2003
- 2003-10-30 JP JP2003370029A patent/JP2005131665A/en active Pending
-
2004
- 2004-10-26 CN CN 200410087990 patent/CN1611310A/en active Pending
- 2004-10-27 TW TW93132640A patent/TW200524688A/en not_active IP Right Cessation
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101896292A (en) * | 2007-12-13 | 2010-11-24 | 爱信高丘株式会社 | Hot press forming device and hot press forming method |
| US9206488B2 (en) | 2007-12-13 | 2015-12-08 | Aisin Takaoka Co., Ltd. | Hot press forming apparatus and hot press forming method |
| CN101970149A (en) * | 2008-05-16 | 2011-02-09 | 丰田自动车株式会社 | Press-forming method and press-formed part |
| CN101970149B (en) * | 2008-05-16 | 2014-09-10 | 丰田自动车株式会社 | Press-forming method and press-formed part |
| CN102688944A (en) * | 2012-06-15 | 2012-09-26 | 江苏大学 | Adjustable heating and cooling integrated hot forming die |
| CN102688944B (en) * | 2012-06-15 | 2014-05-28 | 江苏大学 | Adjustable heating and cooling integrated hot forming die |
| CN104894352A (en) * | 2014-02-07 | 2015-09-09 | 本特勒尔汽车技术有限公司 | Thermoforming line and method for the preparation of thermoformed sheet metal products |
| CN104742189A (en) * | 2015-03-03 | 2015-07-01 | 青州市塑霸机械有限公司 | Special-shaped nonmetallic surface sand grain attached material blanking equipment |
| CN106166581A (en) * | 2015-05-20 | 2016-11-30 | 现代自动车株式会社 | Grading shaped device and forming method thereof |
| US10464117B2 (en) | 2015-05-20 | 2019-11-05 | Hyundai Motor Company | Progressive die machine and progressive forming method |
| CN105107939A (en) * | 2015-09-18 | 2015-12-02 | 武汉理工大学 | Continuous hot stamping device and technology |
| CN105107939B (en) * | 2015-09-18 | 2017-12-05 | 武汉理工大学 | A kind of continuous hot stamping device and technique |
| CN111545649A (en) * | 2020-05-11 | 2020-08-18 | 燕山大学 | Metal plastic forming method based on self-resistance heating |
| CN111545649B (en) * | 2020-05-11 | 2021-08-06 | 燕山大学 | Metal plastic forming method based on self-resistance heating |
| CN111822570A (en) * | 2020-07-10 | 2020-10-27 | 首钢集团有限公司 | Heating hot stamping strengthening process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005131665A (en) | 2005-05-26 |
| TW200524688A (en) | 2005-08-01 |
| TWI312707B (en) | 2009-08-01 |
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