Cup-shaped body and method for the production thereof

Abstract

The invention relates to a method for producing a cup-shaped body ( 1 ), the edge ( 2 ) of which has a flange ( 3 ) and extends in a plane (E) which is inclined to a plane (F) which is perpendicular to the direction of the axial extension (L) of the cup-shaped body ( 1 ). For a simple, cost-efficient and reliable production, the method comprises the steps: Producing a hollow body ( 5 ) by way of a deep-drawing process, and a circumferential shoulder ( 7 ) is formed in the shell ( 6 ) of the hollow body ( 5 ), which shoulder ( 7 ) extends between two shell sections ( 8, 9 ) and extends in a plane which is inclined to a plane which is perpendicular to the deep-drawing direction (R) of the deep-drawing process, and cutting the hollow body ( 5 ) along the shoulder ( 7 ) in order to obtain the cup-shaped body ( 1 ), with the flange ( 3 ) of the cup-shaped body ( 1 ) being formed by at least one part of the shoulder ( 7 ). The invention also relates to a cup-shaped body which is deep-drawn in one piece, a component having a housing and a deep-drawing device.

1 . Method for the production of a cup-shaped body ( 1 ), the edge ( 2 ) of which has a flange ( 3 ) and extends in a plane (E) that is inclined to a plane (F) that stands perpendicular to the direction of the axial extension (L) of the cup-shaped body ( 1 ), comprising the steps:
 producing a hollow body ( 5 ) by a deep-drawing process, whereby a circumferential shoulder ( 7 ), which extends between two shell sections ( 8 ,  9 ) essentially in a plane that is inclined to a plane (F) which is perpendicular to the deep-drawing direction (R) of the deep-drawing process, is formed in the shell ( 6 ) of the hollow body ( 5 ), and   cutting the hollow body ( 5 ) along the shoulder ( 7 ) in order to obtain the cup-shaped body ( 1 ), with the flange ( 3 ) of the cup-shaped body ( 1 ) being formed from at least a part of the shoulder ( 7 ).   
     
     
         2 . Method according to  claim 1 , wherein the deep-drawing direction (R) during the deep-drawing process is linear. 
     
     
         3 . Method according to  claim 1 , wherein the hollow body ( 5 ) is deep-drawn in one draught. 
     
     
         4 . Method according to one  claim 1 , wherein the hollow body ( 5 ) is deep-drawn from a piece of sheet metal ( 4 ), preferably a flat pre-cut sheet metal. 
     
     
         5 . Method according to  claim 1 , wherein the plane (E), where the shoulder ( 7 ) extends in, is inclined to the plane (F), which is oriented perpendicular to the deep-drawing direction (R), by an angle (β) of at least 10°. 
     
     
         6 . Method according to one  claim 1 , wherein the cup-shaped body ( 1 ) is cylindrical, and the axial extension (L) corresponds to the cylinder axis. 
     
     
         7 . Method according to  claim 1 , wherein the bottom ( 10 ) of the cup-shaped body ( 1 ) extends in a plane which is inclined to the plane (F) which is perpendicular to the direction of the axial extension (L) of the cup-shaped body ( 1 ), wherein preferably the plane, where the bottom ( 10 ) of the cup-shaped body ( 1 ) extends in, is essentially parallel to the plane (E) where the flange ( 3 ) runs in. 
     
     
         8 . Method according to one  claim 1 , wherein recesses, in particular for supply lines or discharge lines or resonator chamber openings, are formed in the bottom ( 10 ) and/or the wall ( 11 ) of the cup-shaped body ( 1 ). 
     
     
         9 . Method according to one  claim 1 , wherein the hollow body ( 5 ) is deep-drawn in at least two draughts, in particular if the height of the hollow body ( 5 ) is the same as or greater than its diameter. 
     
     
         10 . Method according to one  claim 1 , wherein the cutting of the hollow body ( 5 ) along the shoulder ( 7 ) is carried out by way of a punching process. 
     
     
         11 . Method according to  claim 10 , wherein the punching process is performed in the same device where the deep-drawing process is performed in, and wherein the punching tool ( 17 ) during the punching process is moved in a direction which corresponds to the deep-drawing direction (R). 
     
     
         12 . Cup-shaped body ( 1 ) deep-drawn from one piece, in particular one piece of sheet metal, the edge of which body is formed from a flange ( 3 ) and lies in a plane (E) which is inclined to a plane (F) which is perpendicular to the direction of the axial extension (L) of the cup-shaped body ( 1 ). 
     
     
         13 . Cup-shaped body according to  claim 12 , wherein the cup-shaped body ( 1 ) is cylindrical, and the axial extension (L) corresponds to the cylinder axis. 
     
     
         14 . Cup-shaped body according to  claim 12 , wherein the bottom ( 10 ) of the cup-shaped body ( 1 ) extends in a plane which is inclined to a plane (F) which is perpendicular to the direction of the axial extension (L) of the cup-shaped body ( 1 ), wherein preferably the plane, where the bottom ( 10 ) of the cup-shaped body ( 1 ) extends in, is essentially parallel to the plane (E) where the flange ( 3 ) runs in. 
     
     
         15 . Component having a housing, in particular silencer, wherein the housing is formed from at least one cup-shaped body ( 1 ) according to  claim 12 . 
     
     
         16 . Component according to  claim 15 , wherein the housing comprises at least two cup-shaped bodies ( 1 ), the flanges ( 3 ) of which rest against each other, and the directions of the axial extensions (L) of the cup-shaped bodies ( 1 ) are inclined towards each other. 
     
     
         17 . Deep-drawing device ( 15 ) for producing a hollow body ( 5 ) by way of a deep-drawing process along a deep-drawing direction (R) having a stamp ( 13 ) and a die ( 14 ), wherein one circumferential shoulder ( 13   c,    14   c ) is formed at the external wall of the stamp ( 13 ) and at the external wall of the die ( 14 ), respectively, which shoulder extends in a plane which is inclined to a plane (F) which is oriented perpendicular to the deep-drawing direction (R) of the deep-drawing process. 
     
     
         18 . Deep-drawing device according to  claim 17 , wherein the deep-drawing direction (R) of the deep-drawing device ( 15 ) is straight. 
     
     
         19 . Deep-drawing device according to  claim 17 , wherein the deep-drawing device ( 15 ) comprises a punching tool ( 17 ) which can be moved in a direction corresponding to the deep-drawing direction (R) for performing a punching process.