EP1899091A1 - Verfahren zum umformen, insbesondere tiefziehen, eines flächigen blechzuschnitts mit einem umformwerkzeug - Google Patents
Verfahren zum umformen, insbesondere tiefziehen, eines flächigen blechzuschnitts mit einem umformwerkzeugInfo
- Publication number
- EP1899091A1 EP1899091A1 EP05803060A EP05803060A EP1899091A1 EP 1899091 A1 EP1899091 A1 EP 1899091A1 EP 05803060 A EP05803060 A EP 05803060A EP 05803060 A EP05803060 A EP 05803060A EP 1899091 A1 EP1899091 A1 EP 1899091A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forming
- sheet metal
- die
- metal blank
- forming die
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M3/00—Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances
-
- 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
- B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
-
- 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
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
- C10M2213/023—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/246—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/04—Aerosols
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2070/00—Specific manufacturing methods for lubricant compositions
Definitions
- the invention relates to a method for forming, in particular deep drawing a flat sheet metal blank in a forming tool, in particular thermoforming tool, with a punch, in particular drawing punch, and a forming die, in particular drawing die, to a semifinished product, in particular for household appliances, eg. Example, a dishwasher or a washing machine and a forming tool, in particular thermoforming tool, with a forming die, in particular drawing punch, and a forming die, in particular draw die, for deep drawing a flat sheet metal blank to a semifinished product.
- thermoforming sheet has a thickness of about 60 microns.
- thermoforming film lowers the coefficient of friction during the forming / -Diefziehvorganges to ⁇ ⁇ 0.1 and prevents contact with the surface of the sheet blank and the drawing punch of the drawing tool.
- the high quality surface of the sheet metal blank to be formed is not damaged by wear, which would otherwise lead to a manual rework or a reject of the machined part in the required surface quality.
- thermoforming film in a manufacturing process Since the application and removal of thermoforming film in a manufacturing process is associated with high costs, there is a need to be able to dispense with such a thermoforming aid in the context of a forming / deep drawing process. Another factor which also increases the production costs is the fact that the service life of the thermoforming tool is lower than that of a method which dispenses with the thermoforming aid. is lower. In addition, there are significant costs for the purchase of non-reusable thermoforming sheet.
- the object of the present invention is to provide a method and a forming tool for forming a flat sheet metal blank with a deep drawing tool, with which a high surface quality without the use of a thermoforming sheet is possible.
- a dishwasher or a washing machine is applied for forming, in particular deep drawing, a lubricant on the sheet metal blank, wherein the lubricant is a drawing oil, which is applied directly at least partially on the surface of the sheet metal blank.
- the semi-finished product has a high surface quality after deep drawing without the use of a thermoforming film.
- the drawing oil thus has properties, ie is designed such that a high surface quality can be achieved without the use of a thermoforming sheet.
- the drawing oil can also be applied only partially (at least partially) to the surface of the sheet metal blank in which large deformations occur. As a result, drawing oil can be saved and the effort to remove the drawing oil after deep drawing can be reduced.
- Another advantage is that the at the Use of thermoforming foil resulting fine film particles, which lead to a heavy contamination of the thermoforming tool and other processing machines, do not apply, whereby the otherwise necessary high maintenance costs can be avoided. Under reshaping in particular deep drawing, bending, z. B. bending in the U or V-die, Tangentialstreck endeavour, or pushing through, z.
- the forming die is generally movable and thereby brings the required force, for. As tensile, compressive or shearing force, for changing the shape of the sheet metal blank on the sheet metal blank.
- the forming die is usually the forming tool, but also the forming die can take on a function of shaping.
- the drawing oil has solid particles with a very small particle size, preferably between 0.1 and 10 microns, especially in the range of about 1 micron, to avoid direct contact between the surface of the blank and the surface of the drawing die.
- the solid particles prevent the direct contact between the sheet surface of the sheet blank and the surface of the drawing die, among others, also because a rolling effect occurs between the drawing punch and the blank, that is, the sheet metal blank.
- H. a small coefficient of friction ⁇ is present, so that a high surface quality of the semifinished product can be achieved.
- the lubricant is a drawing oil and has a high adhesive strength to the sheet metal blank, so that the sheet surface of the sheet metal blank during forming, in particular deep drawing, no direct contact with the surface of the forming die, in particular drawing die learns.
- the material properties of the drawing oil are thus such that no signs of wear on the drawing punch occur.
- the life of the thermoforming tool can be extended compared to a conventional deep drawing process using a thermoforming sheet thereby.
- the drawing oil has a cleaning effect on the forming tool, in particular deep-drawing tool, ie deposited metal atoms on the forming die, in particular drawing die, and / or the Umformatrize, in particular - A -
- Drawing die especially at the bending or drawing edge, are chemically bound and degraded. As a result, no larger particles can build up on the surface of the thermoforming tool, whereby the surface quality can be positively influenced.
- the cleaning effect of the drawing oil is effected by chlorine compounds.
- the drawing oil is applied by spraying on the sheet surface of the sheet metal blank.
- the draw oil is a hydrocarbon compound, preferably at least partially with fluoro compounds, e.g. As a mixture with portions of polyethylene and polytetrafluoroethylene.
- the drawing oil is diluted with demineralized water, preferably in a ratio of 1: 1, prior to application to the sheet metal surface of the sheet metal blank.
- the demineralized water and drawing oil is homogenized by ultrasound in order to achieve the full effect of the drawing oil.
- the mixture of pure drawing oil (hydrocarbon compound) and demineralized water is also referred to as drawing oil.
- the drawing oil is also applied to the surface of the forming die, in particular drawing punch and / or the forming die, in particular draw die.
- the drawing oil after the forming, in particular deep drawing, and optionally further forming or processing steps, removed from the semifinished product As a result, the surface of the semi-finished product is not affected by drawing oil.
- the removal of the drawing oil from the surface of the semifinished product by a washing process for. B. with a preferably slightly alkaline detergent (pH about 7 to 8), for example, a two-component detergent, preferably the cleaning process of Ultrasound is supported, ie ultrasound is applied to the surface of the semifinished product.
- a slightly alkaline detergent pH about 7 to 8
- a two-component detergent preferably the cleaning process of Ultrasound is supported, ie ultrasound is applied to the surface of the semifinished product.
- the drawing oil is removed during the test of a dishwasher in the manufacturing process by a brief trial commissioning, preferably using a commercially available dishwashing detergent.
- a brief trial commissioning preferably using a commercially available dishwashing detergent.
- the dishwasher is briefly put into operation for testing purposes using a dishwashing detergent.
- the rinsing container is composed of semi-finished products produced by the method according to the invention.
- a surface of the forming die, in particular drawing die, and / or the forming die, in particular draw die with a trained according to DIN standard 1.2379 steel surface with a microsurface of Ra ⁇ 1, 0 microns used.
- the surface of the forming die, in particular drawing die, and / or the forming die, in particular draw die has a minimum hardness of 2500 HV 0.01.
- the surface of the forming die, in particular drawing die and / or the forming die, in particular draw die has a multilayer (several layers one above the other) of a chromium matrix, d. H. a skeleton made of chrome carbide and other elements. With this surface material, a high surface quality, d. H. z. B. no visible grooves or scratch marks, the semifinished product can be achieved.
- the Mulitlayer has a good tendency to stick to the drawing oil, in particular by chemical and physical processes, eg. B. by means of different polarity between Mulitlayer, in particular the upper layers of the Mulitlayers, and proportions of the drawing oil.
- This can be a direct contact between the surface of the drawing die and / or the drawing die and the sheet metal blank are avoided, so that a high surface quality of the semifinished product can be achieved.
- sheet metal according to one of the DIN standards 1.4301 (chrome-nickel steel), 1.4303 (chrome-nickel steel) or 1.4016 (chrome steel) is selected as the material of the sheet metal blank. These materials are used for example for the production of washing containers in dishwashers.
- the semifinished product preferably has a glossy surface (surface quality 2R) or glossy ground surface or a matt surface (surface quality 2B).
- thermoforming tool with a forming die, in particular drawing die, and a forming die, in particular drawing die, for forming, in particular deep drawing, a sheet-metal blank to a semi-finished product means are available to a drawing oil for deep drawing directly at least partially on the surface to be able to apply the sheet metal blank.
- the means are spray nozzles, pumping and control devices.
- a flat sheet metal blank 10 to be processed is provided with a drawing oil 11, preferably before the introduction of the sheet metal blank 10 into the deep-drawing tool 11 (FIG. 1 a).
- the sheet metal blank 10 is inserted into a deep-drawing tool 1 such that the surface provided with the drawing oil 11 faces a drawing punch 2 (FIG. 1 b).
- the deep-drawing tool 1 has the drawing punch 2, drawing dies 3 and 6, a hold-down 4 and a receptacle 5, in which the sheet metal blank 10 is inserted.
- the drawing punch 2 may be provided with a coating 7 which has a good adhesion tendency to the drawing oil 11.
- the coating ideally shows a hardness greater than 2500 HV 0.01. The adhesion tendency is promoted by a specially set polarity of the upper atomic layers of the coating.
- the coating is preferably a multilayer (several layers one above the other) of a chromium matrix, ie a skeleton of chromium carbide and other elements.
- the drawing punch 2 is for example made of a steel according to the DIN standard 1 .2379 or other high-speed steel, such. B. according to DIN standard 1.3343, or another Kaltarbeitsstahlgüte manufactured.
- the drawing process takes place in a manner known per se by depressing the drawing punch 2 in the direction of the drawing dies 3, 6, as shown in FIGS. 1 b) to 1 d).
- the semifinished product produced in FIG. 1 d) can be subjected to further processing steps, such as punching or further deep-drawing operations, before the semifinished product is freed from the drawing oil in a last method step (FIG. 1 e).
- This is preferably done in a washing process, in which the semifinished product 12 is immersed in a suitable treatment liquid. This process can advantageously be carried out automatically.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL05803060T PL1899091T3 (pl) | 2005-05-19 | 2005-11-16 | Sposób obróbki plastycznej, zwłaszcza głębokiego tłoczenia, płaskiego przykroju blachy za pomocą narzędzia do obróbki plastycznej |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005023158A DE102005023158A1 (de) | 2005-05-19 | 2005-05-19 | Verfahren zum Tiefziehen eines flächigen Blechzuschnitts mit einem Tiefziehwerkzeug |
| PCT/EP2005/056018 WO2006122584A1 (de) | 2005-05-19 | 2005-11-16 | Verfahren zum umformen, insbesondere tiefziehen, eines flächigen blechzuschnitts mit einem umformwerkzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1899091A1 true EP1899091A1 (de) | 2008-03-19 |
| EP1899091B1 EP1899091B1 (de) | 2012-06-13 |
Family
ID=36046824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05803060A Expired - Lifetime EP1899091B1 (de) | 2005-05-19 | 2005-11-16 | Verfahren zum umformen, insbesondere tiefziehen, eines flächigen blechzuschnitts mit einem umformwerkzeug |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1899091B1 (de) |
| DE (1) | DE102005023158A1 (de) |
| ES (1) | ES2387096T3 (de) |
| PL (1) | PL1899091T3 (de) |
| WO (2) | WO2006122584A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008043359B4 (de) | 2008-10-31 | 2015-05-07 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Umformen eines flächigen Blechzuschnitts sowie zugehöriges Hausgerät |
| CN112453165A (zh) * | 2020-11-19 | 2021-03-09 | 台州竞美工贸有限公司 | 一种热水循环泵定子屏蔽套镜面光亮挤压成型工艺 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1421796A (fr) * | 1964-08-20 | 1965-12-17 | Parker Ste Continentale | Agent lubrifiant pour le formage à froid sans copeaux des métaux |
| DE2223901A1 (de) * | 1972-05-17 | 1974-01-31 | Schmidt Gmbh & Co Kg | Vorrichtung zum einfetten von blechplatinen bei der spanlosen verformung |
| DE2341577B1 (de) * | 1973-08-17 | 1974-12-05 | Texaco Ag | Hochleistungsziehoel |
| CA1062560A (en) * | 1974-09-25 | 1979-09-18 | Hidejiro Asano | Method for the manufacture of a steel sheet adapted for use in ironing processing having good lubrication property |
| GB8502148D0 (en) * | 1985-01-29 | 1985-02-27 | Alcan Int Ltd | Metal-forming lubricant |
| JPH0832903B2 (ja) * | 1985-04-30 | 1996-03-29 | 株式会社日立製作所 | 冷間鍛造用液体潤滑剤 |
| DE3905047A1 (de) * | 1989-02-18 | 1990-08-23 | Uniplanung Tiefziehtechnik Gmb | Vorrichtung zum ziehen von blech, insbesondere zur herstellung von edelstahlspuelen |
| US5020350A (en) * | 1989-06-19 | 1991-06-04 | Aluminum Company Of America | Apparatus and method for lubricating and cooling in a draw and iron press |
| FR2651700B1 (fr) * | 1989-09-11 | 1994-10-14 | Lorraine Laminage | Procede d'emboutissage d'un flan de tole metallique. |
| FR2819204B1 (fr) * | 2001-01-11 | 2003-06-13 | Brandt Cooking | Outil et presse d'emboutissage |
-
2005
- 2005-05-19 DE DE102005023158A patent/DE102005023158A1/de not_active Withdrawn
- 2005-11-16 EP EP05803060A patent/EP1899091B1/de not_active Expired - Lifetime
- 2005-11-16 PL PL05803060T patent/PL1899091T3/pl unknown
- 2005-11-16 WO PCT/EP2005/056018 patent/WO2006122584A1/de not_active Ceased
- 2005-11-16 ES ES05803060T patent/ES2387096T3/es not_active Expired - Lifetime
-
2006
- 2006-04-10 WO PCT/EP2006/061482 patent/WO2006122855A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006122584A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006122584A1 (de) | 2006-11-23 |
| PL1899091T3 (pl) | 2012-10-31 |
| DE102005023158A1 (de) | 2006-11-23 |
| ES2387096T3 (es) | 2012-09-13 |
| WO2006122855A1 (de) | 2006-11-23 |
| EP1899091B1 (de) | 2012-06-13 |
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