DK200400650A - Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical - Google Patents

Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical Download PDF

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Publication number
DK200400650A
DK200400650A DK200400650A DKPA200400650A DK200400650A DK 200400650 A DK200400650 A DK 200400650A DK 200400650 A DK200400650 A DK 200400650A DK PA200400650 A DKPA200400650 A DK PA200400650A DK 200400650 A DK200400650 A DK 200400650A
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DK
Denmark
Prior art keywords
die
annular
cylindrical
ironing
deep drawing
Prior art date
Application number
DK200400650A
Other languages
Danish (da)
Inventor
Danckert Joachim
Original Assignee
Univ Aalborg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from PCT/DK2002/000715 external-priority patent/WO2003035298A1/en
Application filed by Univ Aalborg filed Critical Univ Aalborg
Priority to DK200400650A priority Critical patent/DK200400650A/en
Publication of DK200400650A publication Critical patent/DK200400650A/en

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Abstract

Die for simultaneous deep drawing and ironing has an annular shape with an annular die land running along an inner surface between the inlet and the outlet, the trajectory of the die land being non-cylindrical. Cup comprising a bottom and side walls with a circular or polygonal cross-section produced by the die is claimed.

Description

PATENTKRAV 1. Matrice ti[ samtidige dybtræknlngs- og stræknlngsreduktionsprocesser, hvor matricen er ringformet og har et indløb og et udløb, og hvor der mellem indløbet og udløbet er dannet en ringformet matriceskilleflade, som løber langs en indre overflade af matricen og stræk-ker sig fra en matriceskillefladebegyndelse til en matriæskiliefladeende og langs en matri-cesklllefladekurve, og hvor matriceskillefladekurven ikke er cylindrisk, og hvor matriceskll-lefladekurven Ikke er lige. 2. Matrice ifølge krav 1, hvor strækningsneduktionskurven er delvist cirkulær. 3. Matrice ifølge krav X, hvor slrækningsrqduktlonskurven er delvist elliptisk. 4. Matrice ifølge krav 1, hvor streekningsreduktionskurven er en del afen traktorie. 5. Matrice ifølge et hvilket som helst af de foregående krav, hvor matricens hjømeradius (Rmatrice) er mellem 1 og 20 gange, for eksempel 2,B gange, en indledende emnetykkelse af et produkt, der skal Fremstilles. 6. Matrice Ifølge et hvilket som helst af de foregående krav, hvor en længde (I) af matrice-skillefladen er mellem 0,1 og 30 gange, for eksempel 3,44 gange, den indledende emnetykkelse af et produkt, der skal fremstilles. 7. Produkt fremstillet ved anvendelse af en matrice ifølge et hvilket som helst af de foregående krav, hvilket produkt er et slutprodukt, og hvilket produkt udgør en kop med en bund og sidevægge, der strækker sig fra bunden, og hvor sidevæggene allerede efter at være blevet fremstillet i en matrice ifølge et hvilket som helst af de foregående krav haren I det væsentlige ens højde langs en komplet omkreds af sidevæggene. 8. Produkt fremstillet ved anvendelse af en matrice ifølge et hvilket som helst af de foregående krav, hvilket produkt er et mellemprodukt, og hvilket produkt udgør en kop med en bund og sidevægge, der strækker sig fra bunden, og hvor sidevæggene allerede efter at være blevet fremstillet i en matrice ifølge et hvilket som heist af de foregående krav har en i det væsentlige ens højde langs en komplet omkreds af sidevæggene. 9. Produkt ifølge krav 7 eller krav 8, hvor koppen har et cirkulært cylindrisk tværsnit, 10. Produkt ifølge krav 7 eller krav 8, hvor koppen har et polygonalt cylindrisk tværsnit. 11. Produkt ifølge et hvilket som helst af kravene 7-10, hvor dybtraekningsforholdet er op til 3,0, for eksempel 1,67. 12. Produkt ifølge et hvilket som heist af kravene 7-11, hvor reduktionen af den nominelle tykkelse er mellem 1% og 30%, for eksempel 8,75%, 13. Fremgangsmåde til fremstilling af et produkt Ifølge et hvilket som helst af kravene 7-12 ved anvendelse af en matrice ifølge et hvilket som helst af kravene 1-6, hvilken fremgangsmåde omfatter Implementering af en reduktion af den nominelle tykkelse af et emne i strækningsreduktionstnnnet på mindre end 25% såsom 6,75%. 14. Fremgangsmåde til fremstilling af et produkt ifølge et hvilket som helst af kravene 7-12 ved anvendelse af en matrice ifølge et hvilket som helst af kravene 1-6, hvilken fremgangsmåde omfatter anvendelse af en matrice, der har en halv-vinkel på mindre end 15 grader såsom 12 grader ved matricens indføringspunkt.PATENT REQUIREMENTS 1. Matrix ten [simultaneous deep drawing and stretching reduction processes, wherein the matrix is annular and has an inlet and an outlet, and where an annular matrix separator is formed between the inlet and the outlet, which runs along an inner surface of the matrix and extends from a matrix interface to an array disc end and along a matrix interface curve, and where the matrix interface curve is not cylindrical and where the matrix interface curve is not equal. The die of claim 1, wherein the stretch reduction curve is partially circular. The die of claim X, wherein the drag reduction rectangle curve is partially elliptical. The die according to claim 1, wherein the stretch reduction curve is part of a tractor. The die according to any one of the preceding claims, wherein the die radius of the die (R die) is between 1 and 20 times, for example 2, B times, an initial blank thickness of a product to be made. 6. Die according to any one of the preceding claims, wherein a length (I) of the die separator is between 0.1 and 30 times, for example 3.44 times, the initial blank thickness of a product to be manufactured. A product made using a die according to any one of the preceding claims, which product is a final product, and which product constitutes a cup with a bottom and side walls extending from the bottom, and the side walls already being been manufactured in a die according to any one of the preceding claims, having substantially the same height along a complete circumference of the side walls. A product made using a die according to any one of the preceding claims, which product is an intermediate product, and which product constitutes a cup with a bottom and side walls extending from the bottom, and the side walls already being has been made in a die according to any one of the preceding claims having a substantially equal height along a complete circumference of the side walls. The product of claim 7 or claim 8, wherein the cup has a circular cylindrical cross section. The product of claim 7 or claim 8, wherein the cup has a polygonal cylindrical cross section. The product of any of claims 7-10, wherein the depth draw ratio is up to 3.0, for example, 1.67. A product according to any one of claims 7-11, wherein the reduction of the nominal thickness is between 1% and 30%, for example 8.75%, 13. A process for producing a product according to any of the claims 7-12 using a die according to any one of claims 1-6, comprising implementing a reduction of the nominal thickness of a blank in the stretch reduction mesh of less than 25% such as 6.75%. A method of making a product according to any one of claims 7-12 using a die according to any one of claims 1-6, comprising a die having a half-angle of less than 15 degrees such as 12 degrees at the insertion point of the matrix.

DK200400650A 2001-10-26 2004-04-26 Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical DK200400650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK200400650A DK200400650A (en) 2001-10-26 2004-04-26 Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200101577 2001-10-26
PCT/DK2002/000715 WO2003035298A1 (en) 2001-10-26 2002-10-28 A die for simultaneous deep drawing and ironing processes, a product produced by use of such die and a method for producing such product
DK200400650A DK200400650A (en) 2001-10-26 2004-04-26 Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical

Publications (1)

Publication Number Publication Date
DK200400650A true DK200400650A (en) 2004-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK200400650A DK200400650A (en) 2001-10-26 2004-04-26 Die for manufacture of thin walled cups by simultaneous deep drawing and ironing has an annular shape with an annular die land whose trajectory is non-cylindrical

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Country Link
DK (1) DK200400650A (en)

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