EP3110574A1 - Umformwerkzeug, zur formgebenden bearbeitung eines werkstücks sowie verfahren zum anordnen einer temperiereinrichtung an einem umformwerkzeug - Google Patents
Umformwerkzeug, zur formgebenden bearbeitung eines werkstücks sowie verfahren zum anordnen einer temperiereinrichtung an einem umformwerkzeugInfo
- Publication number
- EP3110574A1 EP3110574A1 EP15701972.0A EP15701972A EP3110574A1 EP 3110574 A1 EP3110574 A1 EP 3110574A1 EP 15701972 A EP15701972 A EP 15701972A EP 3110574 A1 EP3110574 A1 EP 3110574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forming tool
- recess
- die
- medium
- sleeve
- 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.)
- Granted
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- 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
- Umformwerkzeuq for shaping a workpiece and method for arranging a tempering on a
- the present invention relates to a forming tool for shaping a workpiece, in particular a flat sheet, according to the preamble of claim 1.
- the invention also relates to a method for arranging a tempering on a
- these forming devices serve shaping processing of sheets.
- these forming devices have a die with a shaping surface and a male part, such as a punch, with a self-shaping corresponding to the shaping surface of the die
- the sheet is inserted between the die and the punch and formed by a relative movement of the punch in the direction of the die or by a movement of the die in the direction of the punch, wherein the sheet is clamped between the die and punch.
- hold-down are used. These hold-downs, also called blank holders, hold the sheet metal to the die, so that it can not stand up. On the other hand, the hold-downs ensure that the sheet material flows on, so that stress cracks are avoided.
- the forming tool has areas with lower degrees of deformation and areas with higher degrees of deformation. In areas with high
- Forming degree occurs a large deformation of the workpiece, i. of the sheet metal. Experiments have shown that in these areas cracking of the sheet can occur. This cracking is due to the fact that at high workpiece frequency or stroke rate, heated in sections with high degrees of deformation, the tool. It reaches in this
- the die is formed of a cast material, there is a risk that the die is destroyed during normal use. That cutting out a segment from the
- Forming tool made of cast material thus represents a weakening of the cast structure. For example, when the punch deforms the workpiece and penetrates with the sheet in the male, he creates a
- Pressure load on the die which can act in the cavity in the radial direction as well as in the axial direction. This pressure load can cause the tool half, whose casting structure is weakened, to be destroyed.
- the present invention has for its object to provide an alternative solution, with the areas of high degree of deformation of a
- Forming tool are temperature controlled. It is a particular object of the invention to provide a forming tool and a method with which a subsequent tempering or cooling of critical areas of the
- Forming tool is feasible.
- the invention proposes a forming tool for shaping a workpiece, in particular a flat sheet, with a die, a hold-down and a male part, which are each arranged to be movable, wherein at least the die, the hold-down and / or Patrize sections are temperature controlled.
- at least one of the three elements can be provided in one section with one or more tempering devices.
- the tempering is mounted in the vicinity of areas of the forming tool, in which high degrees of deformation are achieved, so-called critical areas.
- the die, the holding-down device and / or the male part can have, in sections, at least one shaping insert which can be tempered.
- the tempering unit can thereby also in individual segments or in individual elements of the forming tool or
- At least one depression in particular a blind hole, can be provided for tempering, which can be flushed through with a medium.
- Such depressions such as, for example, blind holes, are to be introduced into the forming tool in a particularly simple manner. This can both in the new production of the tool as well as subsequently in a revision or optimization of an existing
- the flushing of the depression with a Medium has the advantage that the temperature of the tool in the critical region of the tool is continuously adjustable by regulating or controlling the flow temperature of the medium.
- a baffle can be introduced into the recess for guiding the medium. This can be realized in a simple manner, a flow channel in which the medium from an inlet along the
- Deflection plate can flow to the tool-side inner end of the blind hole. At this inner end of the blind bore, the medium is deflected and again guided along the deflection plate to an outlet.
- the surface of the tool in the recess may be provided with a sealant. This offers advantages, especially if that
- Tool is formed of a porous material such as cast material. Since cast materials are leaking, the cooling medium can penetrate into the material of the tool. In order to prevent this, according to this embodiment, at least within the recess, the surface of the tool is sealed by means of a sealant.
- a sealant for this purpose, all sealants with which casting pores are closable, for example, radiator sealant, water glass, etc .. Such sealants are added to the cooling medium before commissioning of the tool and passed through the flow channel or the cooling system. In this way, the pores of the casting material which are located on the surface of the tool in the region of the depression are closed in a particularly simple and practicable manner.
- the surface of the recess may be provided with a paint, casting resin or adhesive. Furthermore, the surface can also be sealed by tinning with soft solder.
- the deflecting plate can be arranged in such an insert, for example a sleeve, that the medium is guided between the baffle and the inner wall of the sleeve.
- a sleeve offers particular advantages when the forming tool is formed from a material that is not tight. For example, if the forming tool is made of cast material such as gray cast iron, the sleeve creates a medium-tight vessel in which the medium can be guided.
- the outer wall of the sleeve can be in touching contact with the inner wall of the recess.
- Fit has proven to be particularly useful here. Sucking fits in the sense of the invention are play fits with little play, whereby a mounting or dismounting without tools, i. is possible by hand.
- the sleeve may be formed of a material having high thermal conductivity.
- a material having high thermal conductivity In particular, copper or similar materials are suitable as such material.
- the outer wall of the sleeve can be provided with a heat conducting means, in particular a heat conducting coating or a thermal paste.
- the invention relates to a method for arranging a tempering device on a forming tool, for shaping Machining a workpiece, in particular a flat sheet with a die, a hold-down and a male part, with the steps:
- a tempering unit can be provided in or on a forming tool in a simple and cost-effective manner. This method is particularly suitable for the subsequent installation of a temperature control unit in a forming tool.
- an insert for example a sleeve can be introduced into the depression.
- the sleeve offers the advantage that even with forming tools, which are formed from a porous material through which the medium can flow, cooling can be realized.
- the surface of the tool in the recess can be provided with a sealant.
- a sealant is introduced into the recess, which closes the pores of the material of which the tool consists.
- sealants are admixed before the start of the tool the cooling medium and through the flow channel or the cooling system passed. In this way, the pores of the casting material which are located on the surface of the tool in the region of the depression are closed in a particularly simple and practicable manner.
- Component number streamlines the process.
- gaseous or liquid media such as. Water, oils or
- Emulsions For use as a medium or as a coolant, for example, water, which is optionally provided with an antifreeze is suitable. As a result, the medium can also be tempered to temperatures below 0 ° C.
- Fig. 1 is a sectional view through a forming tool
- FIG. 1 shows a forming tool 10 which comprises a die 11, a hold-down 12 and a punch in the form of a punch 13.
- Forming tool 10 a workpiece 20 can be formed shaping.
- Fig. 1 shows the end of the forming process.
- the die 1 1 the
- Hold-down 12 and the punch 13 are movably mounted to each other, in Fig. 1 would correspond to such a direction of movement of the vertical direction.
- An initially flat extending sheet 20 is inserted between the die 11 and the hold-down 12 and pressed by means of the blank holder 12 against the die 1 1.
- the punch 13 is moved relative to the male part 11, thereby forming a portion of the workpiece 20.
- Fig. 1 takes place by way of example and not restricting a deformation of the sheet 20 to a pot-shaped or cup-shaped component.
- the tool 10 warms up in critical areas. This occurs in particular at a high forming cadence or stroke rate, in which six to eight or more components per minute are formed.
- Such critical areas are, for example, in Fig. 1 areas between the punch 13 and the die 1 1, in the
- a temperature control unit is provided in the hold-down 12.
- Temperature control unit is formed as a blind hole, which extends in Fig. 1 from left to right.
- a baffle 14 is inserted from the left, which acts as a horizontal partition.
- This blind hole can be flushed with a liquid or gaseous medium, wherein a flow is established, which is shown in Fig. 1 by the marked with F arrows.
- the medium is introduced through an inlet opening into the region between the deflecting plate 14 and the
- Wall of the blind hole introduced. It flows in Fig. 1 from the left to right up to the tool inside end of the blind hole, is diverted there and then flows through the lower channel in Fig. 1 from right to left to the outlet opening. The cooling effect thus spreads from the left area of the blank holder 12 via the workpiece 20 into the die 1.
- the temperature in the hold-down 12 is shown in Fig. 1, this is only an exemplary embodiment. In other embodiments of the invention, the temperature in the die 1 1 or - provided appropriate accessibility - be mounted in the punch 13.
- Fig. 1 is also to the effect that the temperature directly in an element of the forming tool 10th
- the die 1 1, the punch 13 or the hold-down 12 also consist of individual shaping sections, wherein the temperature control unit can be arranged in a shaping portion.
- the individual parts of the shaping device 10 shown in FIG. 1 are made of hardened steel. This is tight with respect to the medium.
- a seal with respect to the cooling medium can be generated by providing the recess with a sealant.
- the pores in the depression, i. on the surface of the walls which bordered the depression closed.
- FIG. 2 shows an enlarged view of the hold-down 12 of FIG. 1.
- the baffle 12 is still introduced, but it is not located directly in the blind hole, but is additionally surrounded by a sleeve 15.
- the sleeve 15 is made of a
- the outer surface of the sleeve 15 is in touching contact with the inner surface of the recess.
- a particularly good heat transfer from the medium flowing in the sleeve 15 can be ensured via the sleeve 15 to the hold-down 12.
- the flow direction of the medium results from the arrows in FIG. 2, which are denoted by F.
- An inlet is shown in FIG. 2 at the top, through which the medium penetrates into a channel which is defined by the deflecting plate 14 and by the inner surface of the housing 15. In these chambers, the medium flows in Fig. 2 from left to right until
- the tempering instead of in the hold-down 12 in the punch 13 or the die 11 may be introduced.
- the inlet and the outlet are connected via a hose connection via a simple ring tubing with a suitable pressure hose to a cooling unit.
- a hose connection via a simple ring tubing with a suitable pressure hose to a cooling unit.
- pipe connections can also be used. This creates a cooling circuit in which the medium flows back from the cooling unit to the inlet on the tool, through the tempering device and from the outlet to the cooling unit. The cooling unit tempered the medium to a predetermined temperature.
- the invention offers advantages in that existing or new forming press tools can be provided with cooling at very low cost and low risk in critical forming areas.
- advantages of the invention
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014203279.2A DE102014203279A1 (de) | 2014-02-24 | 2014-02-24 | Umformwerkzeug, zur formgebenden Bearbeitung eines Werkstücks sowie Verfahren zum Anordnen einer Temperiereinrichtung an einem Umformwerkzeug |
| DE102014207869.5A DE102014207869A1 (de) | 2014-04-25 | 2014-04-25 | Umformwerkzeug, zur formgebenden Bearbeitung eines Werkstücks sowie Verfahren zum Anordnen einer Temperiereinrichtung an einem Umformwerkzeug |
| PCT/EP2015/051883 WO2015124404A1 (de) | 2014-02-24 | 2015-01-30 | Umformwerkzeug, zur formgebenden bearbeitung eines werkstücks sowie verfahren zum anordnen einer temperiereinrichtung an einem umformwerkzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3110574A1 true EP3110574A1 (de) | 2017-01-04 |
| EP3110574B1 EP3110574B1 (de) | 2019-11-27 |
Family
ID=52440670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15701972.0A Active EP3110574B1 (de) | 2014-02-24 | 2015-01-30 | Umformwerkzeug, zur formgebenden bearbeitung eines werkstücks sowie verfahren zum anordnen einer temperiereinrichtung an einem umformwerkzeug |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10252311B2 (de) |
| EP (1) | EP3110574B1 (de) |
| CN (1) | CN105899306B (de) |
| WO (1) | WO2015124404A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014118416B4 (de) * | 2014-12-11 | 2017-02-23 | Thyssenkrupp Ag | Werkzeug zum Umformen und/oder partiellen Presshärten eines Werkstücks |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH598884A5 (en) | 1975-07-30 | 1978-05-12 | Fischer Ag Georg | Permanent mould casting of ferrous metals |
| US4655280A (en) * | 1984-03-26 | 1987-04-07 | Fuso Keigokin Co., Ltd. | Die cooling pipe |
| JP4823718B2 (ja) * | 2006-03-02 | 2011-11-24 | 新日本製鐵株式会社 | 熱間成形金型及びプレス成形装置並びに熱間プレス成形方法 |
| US20080003325A1 (en) * | 2006-06-30 | 2008-01-03 | Seaver Richard T | Baffle for mold cooling systems |
| DE102010012579B3 (de) * | 2010-03-23 | 2011-07-07 | Benteler Automobiltechnik GmbH, 33102 | Verfahren und Vorrichtung zur Herstellung von gehärteten Formbauteilen |
| DE102010027554A1 (de) * | 2010-07-19 | 2012-01-19 | Thyssenkrupp Umformtechnik Gmbh | Umformwerkzeug und Verfahren zum Warmumformen und partiellen Presshärten eines Werkstückes aus Stahlblech |
| DE102010063468A1 (de) | 2010-12-17 | 2012-06-21 | Bdw Technologies Gmbh | Temperiervorrichtung, Gusswerkzeug und Verfahren zum Herstellen eines Gussbauteils |
| EP2703513B1 (de) * | 2011-04-28 | 2018-01-10 | Kabushiki Kaisha Kobe Seiko Sho | Heissgepresster formartikel, herstellungsverfahren dafür |
| DE102011051943A1 (de) | 2011-07-19 | 2013-01-24 | Benteler Automobiltechnik Gmbh | Umformwerkzeug und Verfahren zur Herstellung von Formbauteilen aus Metallplatinen |
| ES2458932T3 (es) * | 2011-09-06 | 2014-05-07 | Gmf Umformtechnik Gmbh | Herramienta de conformación con taladros de canal de refrigeración ramificados dentro de partes de herramienta |
| DE102011116714B4 (de) * | 2011-10-22 | 2022-12-22 | Volkswagen Aktiengesellschaft | Verfahren und Werkzeug zum Warmformen eines Blechmaterials |
| KR101427918B1 (ko) * | 2012-10-05 | 2014-08-08 | 현대자동차 주식회사 | 핫 스탬핑 성형 장치 및 그 방법 |
| DE102013021229A1 (de) | 2013-12-13 | 2014-07-24 | Daimler Ag | Werkzeug-Anordnung zum Pressen/Tiefziehen eines Werkstücks |
-
2015
- 2015-01-30 CN CN201580004290.XA patent/CN105899306B/zh active Active
- 2015-01-30 WO PCT/EP2015/051883 patent/WO2015124404A1/de not_active Ceased
- 2015-01-30 EP EP15701972.0A patent/EP3110574B1/de active Active
-
2016
- 2016-08-23 US US15/244,350 patent/US10252311B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US10252311B2 (en) | 2019-04-09 |
| EP3110574B1 (de) | 2019-11-27 |
| CN105899306A (zh) | 2016-08-24 |
| CN105899306B (zh) | 2018-09-07 |
| WO2015124404A1 (de) | 2015-08-27 |
| US20160354827A1 (en) | 2016-12-08 |
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