Device, method and tool for producing a rimmed passage in a component

Abstract

The invention relates to a device, a method and a tool for producing a rimmed passage in a component, said device having a die unit and a punch apparatus, wherein the die unit can be arranged on a first side of the component and the punch apparatus can be arranged opposite on a second side of the component. As claimed in the invention, the punch apparatus includes a hollow punch with a punch recess which is matched to a die section of the die unit in such a manner that when there is a relative movement between the unit and the punch apparatus, the die section enters the punch recess, wherein the punched-out material region is pushed into the punch recess.

1 . A device for producing a rimmed passage in a component comprising a die unit and a punch apparatus which interact in a positionally accurate manner for producing the rimmed passage, wherein the die unit can be arranged on a first side of the component and the punch apparatus can be arranged on an opposite; second side of the component, and wherein the rimmed passage is produced by punching a material region out of the component and by forming remaining material regions which connect to the punched-out material region, the punch apparatus further comprising a hollow punch with a punch recess which is matched to a die section of the die unit in such a manner that when there is a relative movement between the die unit and the punch apparatus, the die section enters the punch recess, whereby the punched-out material region is pushed into the punch recess. 
     
     
         2 . The device as claimed in  claim 1 , further comprising a holding-down device, which can be moved into contact with the second side of the component for the production of the rimmed passage, present in such a manner that when the rimmed passage is being produced, the component is held between the die unit and the holding-down device. 
     
     
         3 . The device as claimed in  claim 1 , wherein the punch apparatus and the die unit allow for the punching out and forming of material regions of the component to be performed in a single stage. 
     
     
         4 . The device as claimed in  claim 1 , wherein the punch apparatus and the die unit allow for the producing of a rimmed passage to be completed without having to reverse a movement direction of a moved element of at least one of the punch apparatus and of the die unit, starting during the operation for producing the rimmed passage. 
     
     
         5 . The device as claimed in  claim 2 , wherein the hollow punch is accommodated so as to be movable within the holding-down device. 
     
     
         6 . The device as claimed in  claim 5 , wherein the hollow punch of the punch apparatus is positioned in advance of or behind the holding-down device. 
     
     
         7 . The device as claimed in  claim 1 , wherein the die section includes a raised die mandrel, the outer form of which engages in the punch recess with accuracy of fit. 
     
     
         8 . The device as claimed in  claim 1 , wherein the die unit has a bearing section for supporting the first side of the component when the rimmed passage is being produced. 
     
     
         9 . The device as claimed in  claim 8 , wherein a die cavity is defined between the bearing section and the die section. 
     
     
         10 . The device as claimed in  claim 9 , wherein the die cavity is present between the bearing section and the die section in such a manner that when the rimmed passage is being produced, parts of the hollow punch engage in the die cavity. 
     
     
         11 . The device as claimed in  claim 1 , wherein the die mandrel provides a bearing surface for the first side of the component, said bearing surface lying at least approximately in a plane with a support surface of the bearing section. 
     
     
         12 . The device as claimed in  claim 9 , wherein the die cavity has a shoulder which, during the production of the rimmed passage, serves as a stop for a material of the component which, during the production of the rimmed passage, is formed right into the die cavity. 
     
     
         13 . The device as claimed in  claim 9 , wherein the die cavity is developed without a shoulder. 
     
     
         14 . The device as claimed in  claim 12 , wherein the shoulder of the die cavity is formed by an interchangeable component which can be inserted into the die unit. 
     
     
         15 . The device as claimed in  claim 1 , wherein the die Cavity is provided with a connection mechanism for at least one of ventilating and aerating the die cavity. 
     
     
         16 . The device as claimed in  claim 1 , wherein the punch apparatus allows for the punched-out material region to be expelled towards the free end of the punch apparatus. 
     
     
         17 . The device as claimed in  claim 1 , wherein the contours of at least one of the punch apparatus and of the die unit deviate from a cylindrical form. 
     
     
         18 . A method for producing a rimmed passage in a component, wherein a die unit and a punch apparatus interact in a positionally accurate manner for the production of the rimmed passage and the die unit is arranged on a first side of a component and the punch apparatus is arranged on an opposite, second side of the component, and the rimmed passage is produced by punching a material region out of the component and by forming remaining material regions which connect to the punched-out material region, wherein the punched-out material region is discharged by means of the punch apparatus. 
     
     
         19 . The method as claimed in  claim 18 , wherein when there is a relative movement between the die unit and the punch apparatus, the punched-out material region is pushed into a punch recess in a hollow punch of the punch apparatus. 
     
     
         20 . A tool for producing a rimmed passage, said tool comprising a device as claimed in  claim 1 .