EP2012949A1 - Umformwerkzeug zum umformen von hohlkörpern oder blechen mit hilfe eines druckbeaufschlagten gases oder fluides - Google Patents
Umformwerkzeug zum umformen von hohlkörpern oder blechen mit hilfe eines druckbeaufschlagten gases oder fluidesInfo
- Publication number
- EP2012949A1 EP2012949A1 EP07702415A EP07702415A EP2012949A1 EP 2012949 A1 EP2012949 A1 EP 2012949A1 EP 07702415 A EP07702415 A EP 07702415A EP 07702415 A EP07702415 A EP 07702415A EP 2012949 A1 EP2012949 A1 EP 2012949A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool according
- contour
- forming tool
- load distribution
- distribution plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/039—Means for controlling the clamping or opening of the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/055—Blanks having super-plastic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Definitions
- the present invention relates to a forming tool for forming hollow bodies or sheets by means of a pressurized gas or fluid, wherein the forming tool has at least two contour blocks forming a cavity, wherein at least one of the contour blocks can be heated.
- the transformation under internal pressure and at elevated temperature is well known from the prior art.
- the contour blocks have a temperature which corresponds approximately to that which the body to be formed, that is to say, for example, a hollow body or also a metal sheet or a circuit board, should show during the deformation. Because only this ensures that the workpiece to be reshaped essentially retains its temperature during the forming process.
- contour blocks are provided, wherein the contour blocks each have an insulation for the contour blocks. How the contour blocks are to be moved together or a housing provided for this purpose does not follow from this reference.
- the tool and in particular the two contour blocks forming the cavity, provide a temperature which essentially corresponds to the desired forming temperature of the workpiece.
- the contour blocks are arranged in a two-part tool housing, wherein the two-part tool housing has insulation for the contour blocks, wherein a load distribution plate is provided with the load distribution plate the tool housing is in communication.
- the load distribution plate ensures that the insulation is not damaged.
- Insulating material if it is to be insulating, characterized by a low heat conduction. This means that the insulating material has as high a porosity as possible. But this also means that the pressure resistance of insulating material is quite limited. Is known moreover, also that during the hydroforming with the aid of a pressurized gas or fluid, the two contour blocks forming the cavity tend to escape under pressure to the outside. That is, insulation surrounding the contour blocks must be able to withstand such pressure.
- load distribution means it is now achieved that the pressure forces exerted by the contour blocks on the environment can be distributed over a large area, the size of the area preferably corresponding to the size of the load distribution plate. That is, the size of the insulation and also the insulating material should be chosen so that the compressive forces exerted by the load distribution plate on the insulation are not suitable for compressing the insulation.
- Lastverteilplatte and base plate of the tool housing are provided. Also towards the side, so dressed to the walls of the tool housing, insulation is provided, which is held by a lid which is fixed to the walls of the tool housing.
- the Lastverteilplatte is part of the contour block, wherein the Lastverteilplatte rests directly on the insulation.
- the load distribution plate itself is in communication with the tool housing in order to ensure that opening and closing of the cavity becomes possible when the tool housing is moved apart.
- the load distribution plate is connected as a separate element with the tool housing such that it rests almost completely over the insulation, the load distribution plate having means for holding the contour block.
- the contour blocks are moved apart to insert the workpiece. Subsequently, the contour blocks are moved together again and held together, it must be ensured that the two contour blocks are aligned with each other over each other.
- the one contour block is taken up in a floating manner by the load distribution plate.
- the contour block which can be accommodated in a floating manner by the load distribution plate, and this is advantageously the upper contour block, the two contour blocks always center themselves on each other due to the floating support of the one contour block.
- the contour blocks have centering means in the region of their parting plane.
- the centering means may in this case be a nose arranged on the one contour block, which nose corresponds to a corresponding recess on the other contour block, ie enters into it.
- the optimal alignment of the two contour blocks to each other is achieved when the side edges of the nose and recess are perpendicular to each other. It has been found, however, that in such a case, the contour blocks "eat” each other, ie baked together, which leads to increased wear. Therefore, in such places where z. B. a "scuffing" is to be feared, a game between the contour blocks can be provided.
- the nose and corresponding to the recess have an inlet slope of, for example 20 °.
- Such a kind of gearing between the two contour blocks through the nose and the corresponding thereto provided recess is advantageously substantially completely encircling, that is provided on the entire circumference in the parting plane of the contour blocks.
- This with the exception of the two openings, which serve to feed the punches for the hollow body, which is introduced into the reshaped hollow body on the one hand gas or fluid under pressure or even the hollow body can be compressed by moving together the stamp for the supply of material.
- the agitation by the teeth must not be made on the entire circumference, z. B. to avoid tension. Due to the peripheral arrangement of the toothing described above, a form of bursting protection is provided which ensures that escapes the bursting momentarily escaping pressure braked by this gearing when bursting of the hollow body.
- the tool housing has a so-called shield as an additional bursting protection substantially circumferentially in the region of the parting plane of the contour blocks.
- This shield as bursting protection is provided in particular in the area of the punch for the workpiece, as at these points - as already explained - the teeth between the two contour blocks does not attack.
- At least one contour block of the two contour blocks forming the cavity is floatingly mounted in the tool housing.
- the Lastverteilplatte means for holding the contour block, and in particular for floating support of the contour block.
- the load distribution plate in the tool housing is aligned, by lateral adjustment screws to make a pre-adjustment of the position of the load distribution plate can.
- the contour block has heating means.
- the heating means may in this case be formed, inter alia, as a flat radiator, or as a rod heater. When using a flat radiator, the flat radiator is directly connected to the contour block to achieve a good heat transfer, z. B. screwed.
- the contour block has corresponding openings for introducing these bar heaters. In any case, it must be ensured that overheating of the contour blocks and radiators is prevented, which can be done in detail by the arrangement of thermocouples on the contour blocks in conjunction with a corresponding regulation.
- the contour blocks are mounted isolated in the tool housing.
- the quality of the insulation depends essentially on the type of insulation. That is, insulation having good efficiency is soft because it has a corresponding number of pores.
- a hard insulation 5 is for example in the form of foamed stones, z.
- Lastverteilplatte are closest, are much higher temperature resistant than those that are farther away.
- the layers may be of different density and thickness.
- the board or the sheet is preferably held clamped by hold-down by the contour blocks.
- At least one contour block has for this purpose a die, which corresponds to the final shape of the sheet metal or the blank to be formed.
- the die is to be displaced to reduce the volume of the cavity on the other contour block.
- the die in the other contour block may have a surface formed corresponding to the die of the one contour block, but this need not be.
- the reduction of the volume in the cavity is of interest insofar as a low Volume for one in a sudden pressure drop reduces the risk of bystanders and on the other hand is more economical.
- the deformation of the board can be done once only by gas pressure, in parallel, but also one die can be moved to the other die too.
- a stamp can be provided according to a variant;
- the displacement of the die can also be done by gas pressure.
- Figure 1 shows the forming tool in a side view in section
- Figure 2 shows a detail of a view according to Figure 1, but rotated by 90 °;
- Figure 2a shows the detail IIa of Fig. 2;
- FIG. 3 shows a section of another type of insulation between
- Figure 3a shows a representation of another type of insulation with horizontally extending insulating layers of different
- Figure 4 shows the arrangement of a flat heating element directly on a contour block
- Figure 5 shows a forming tool according to Figure 1, wherein in the cavity a circuit board or a sheet rests, by
- FIG. 5 a shows a representation according to FIG. 5, the one die being displaceable by a gas cushion
- Figure 6 shows a section along the arrow X of Figure 1 with a cone for closing the ends of the reshaping
- FIG. 7 shows a representation according to Figure 6, wherein a clamping device is provided for detecting the ends of the hollow body to be formed.
- the tool housing is designated as a whole by 1.
- the tool housing comprises two base plates 2, 3 for connection to the machine frame, wherein on the base plate in each case lateral walls 4, 5, 6 and 7 are provided.
- the walls 4 to 7 are each firmly connected to the respective base plate 2, 3.
- Between the walls 4 to 7 are each spaced from the base plates 2 and 3 Lastverteilplatten 8 and 9, wherein between Lastverteilplatte 8, 9 and base plate 2, 3, a distance is provided, which is filled by an insulation 10.
- a further insulation 65 is located laterally to the contour block below / above the load distribution plate 8, 9. In order to hold this insulation in place, covers 65a are provided, which are arranged on the walls 4-7 of the housing.
- a designated 11 and 15 holder for receiving a respective contour block 20, 25.
- a holder comprises a balance plate 21, 26 with two parallel extending thereon arranged spacer rails 22, 27 and two mutually parallel head jaws 23, 28.
- the head jaws 23, 28 project beyond the spacer rail 27, whereby a guide is provided, wherein the contour block 20, 25 in the region of this guide on both sides in each case a projection 20a, 25a.
- the two contour blocks 20, 25 are held by the generally designated 11 and 15 holder in the manner of a dovetail guide.
- the design of the holder 11 differs from the holder 15 in that the contour block 20 is received floating in the holder 11.
- the contour block 20 laterally to the head jaw 23 has a distance 23a and a vertical distance 23b between the lower edge of the head jaw 23 and the top of the web 20a. That is, the contour block 20 is movable in any direction, which is required so that the contour block, despite possibly different thermal expansion to the contour block 25 on this center accordingly, ie align.
- the coarse alignment during assembly takes place by alignment of the load distribution plate 8, 9 with the help of the laterally arranged in the housing 1 screws 8a, 9a.
- the centering block 20 laterally has a nose 24, said lateral nose 24 protrudes into a corresponding recess 29 of the other contour block 25. It is essential that the nose and recess each have an inlet slope 20a, 25a.
- a further burst protection results insofar as a shield 45 is provided, which is arranged circumferentially in the region of the parting plane of the two contour blocks on the one contour block.
- FIG 3 shows another embodiment of the insulation 10, wherein the insulation 10 there supports 12, which ensure the same distance between the base plate 2, 3 and the load valve plate 8, 9.
- the supports 12 may in this case be made, for example, of heat-insulating ceramic.
- FIG. 4 shows one arranged on the contour block 20, 25
- Panel heater 60 which is bolted to the top of the contour block 20, 25.
- FIG. 5 shows a variant in which no hollow body is deformed, but rather a sheet or a circuit board 100.
- the contour blocks denoted 120 and 125 are now not substantially identical to one another, but quite different.
- the contour block 120 has a die 122, wherein the die 122 is movable through the forming die 130 along the arrow 150.
- the contour block 120 has a frame 121 which receives the actual die 122 in a movable or displaceable manner along the arrow 150. Between the acting as a hold-down frame 121 and the lower contour block 125, the designated 100 board is kept clamped.
- the matrix 122 is displaceable along the arrow 150, wherein in particular it is provided that the matrix 122 is movable on the contour block 125 with the matrix 126 in order to move the volume 140 between board 100 and die 126 to minimize. This against the background that in the case of bursting of the board, the pressurized gas amount is reduced. In this respect, it is provided to move the die 122 in the direction of the die 126, in order then to apply thereto the volume 140 with gas via the feed line 160.
- the forming die 130 also communicates with the die 122 via the insulation 135.
- the frame 121 is also floating again in the holder 11, as has already been explained elsewhere with respect to the contour block 20.
- FIG. 5 a differs from that according to FIG. 5 in that, instead of the punch 130 above the die 122, a cavity 128 is provided here, which is fed with gas or a fluid through the line 128 a, around the die 122 in the same way how to move the stamp 130.
- Figure 6 shows schematically a view of the contour block according to arrow X of Figure 1.
- Recognizable here is the reshaped hollow body 50 and the contour block 25.
- cones 70 are provided, which are moved into the ent glove opening of the hollow body. Through the cones, the supply of the gas takes place in the hollow body. If the hollow body is not only to be sealed at its end but also that material is to be added during the forming process, then the hollow body must not only be sealed at the end, but also be clamped.
- a clamping device 75 FIG. 7 is known from DE 10 2004 009 485.
- the cone may be cooled during sealing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006015793A DE102006015793C5 (de) | 2006-04-05 | 2006-04-05 | Umformwerkzeug zum Umformen von Hohlkörpern oder Blechen mit Hilfe eines druckbeaufschlagten Gases oder Fluides |
PCT/DE2007/000185 WO2007112711A1 (de) | 2006-04-05 | 2007-02-02 | Umformwerkzeug zum umformen von hohlkörpern oder blechen mit hilfe eines druckbeaufschlagten gases oder fluides |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2012949A1 true EP2012949A1 (de) | 2009-01-14 |
Family
ID=38047883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07702415A Withdrawn EP2012949A1 (de) | 2006-04-05 | 2007-02-02 | Umformwerkzeug zum umformen von hohlkörpern oder blechen mit hilfe eines druckbeaufschlagten gases oder fluides |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090025445A1 (de) |
EP (1) | EP2012949A1 (de) |
DE (1) | DE102006015793C5 (de) |
WO (1) | WO2007112711A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007018281A1 (de) * | 2007-04-18 | 2008-10-23 | Volkswagen Ag | Werkzeug zum Innenhochdruckformen, sowie Verfahren zum Innenhochdruckformen |
US8479552B1 (en) * | 2007-05-22 | 2013-07-09 | Temper Ip, Llc | Method and die for forming a tubular blank into a structural component |
DE102010033816A1 (de) * | 2010-06-16 | 2011-12-22 | Giw Gesellschaft Für Innovative Werkzeugsysteme Mbh | Temperiertes Werkzeug |
FR2975313A1 (fr) * | 2011-05-19 | 2012-11-23 | Peugeot Citroen Automobiles Sa | Procede de mise en forme de pieces mecaniques et outillage mettant en œuvre le procede |
EP2851139B1 (de) * | 2012-05-17 | 2022-11-02 | Nippon Steel Corporation | Verfahren zur plastischen bearbeitung für metallmaterial |
US20140244781A1 (en) * | 2013-02-22 | 2014-08-28 | Sap Ag | Enhanced information delivery |
CN107052091A (zh) * | 2016-12-08 | 2017-08-18 | 东莞市众茂五金有限公司 | 一种治具加温热整形装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4352280A (en) * | 1980-05-16 | 1982-10-05 | Rockwell International Corporation | Compression forming of sheet material |
GB8802738D0 (en) * | 1988-02-06 | 1988-03-09 | British Aerospace | Apparatus & method for fabricating superplastically formed structures |
US5016805A (en) * | 1988-10-31 | 1991-05-21 | Rohr Industries, Inc. | Method and apparatus for dual superplastic forming of metal sheets |
US5214949A (en) * | 1992-04-06 | 1993-06-01 | Rohr, Inc. | Cold wall superplastic forming press with surface mounted radiant heaters |
US5277045A (en) * | 1992-05-08 | 1994-01-11 | Rockwell International Corp. | Superplastic forming of metals at temperatures greater than 1000 degree C |
DE19642824A1 (de) * | 1996-10-17 | 1998-04-23 | Hermann Bartels | Verfahren und Vorrichtung zum Verformen von Hohlprofil-Werkstücken aus Metall |
DE19806761A1 (de) * | 1998-02-18 | 1999-08-19 | Volkswagen Ag | Kraftfahrzeugteil und Verfahren zu seiner Herstellung |
US7024897B2 (en) * | 1999-09-24 | 2006-04-11 | Hot Metal Gas Forming Intellectual Property, Inc. | Method of forming a tubular blank into a structural component and die therefor |
JP3761820B2 (ja) * | 2001-09-04 | 2006-03-29 | アイシン高丘株式会社 | 金属部材成形方法 |
DE10162438A1 (de) * | 2001-12-19 | 2003-07-03 | Bayerische Motoren Werke Ag | Vorrichtung zum Umformen von metallischen Werkstücken im Wege einer Warmumformung |
US7021099B2 (en) * | 2003-06-12 | 2006-04-04 | General Motors Corporation | Extraction system for hot formed parts |
US7159427B2 (en) * | 2004-02-27 | 2007-01-09 | General Motors Corporation | Heated and insulated tool container for hot gas blow-forming |
-
2006
- 2006-04-05 DE DE102006015793A patent/DE102006015793C5/de active Active
-
2007
- 2007-02-02 WO PCT/DE2007/000185 patent/WO2007112711A1/de active Application Filing
- 2007-02-02 EP EP07702415A patent/EP2012949A1/de not_active Withdrawn
-
2008
- 2008-09-22 US US12/284,433 patent/US20090025445A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007112711A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006015793C5 (de) | 2009-02-12 |
WO2007112711A1 (de) | 2007-10-11 |
US20090025445A1 (en) | 2009-01-29 |
DE102006015793B3 (de) | 2007-06-06 |
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