Router

Abstract

A router with a cutter head containing the drive motor so that the cutter head is held in a displaceable manner at guide columns which are secured at a base plate which is provided with a central opening for the passage of a cutter inserted in the tool holder of the cutter head, is provided in the base plate with a suction intake channel which surrounds the central opening over at least the larger part of its periphery and to which a suction extraction channel is connected. The suction extraction channel runs inside one of the guide columns which for this purpose has been constructed so that it is hollow.

We claim:  
     
       1. A router with a cutter head ( 1 )  containing the drive motor ( 2 )  and held in a displaceable manner at first and second guide columns ( 30 , 31 )  which are secured at a base plate ( 20 )  and which extend away from it vertically to its workpiece engagement surface and with a tool holder ( 4 )  for a cutter provided at the side of the cutter head ( 1 )  facing towards the base plate ( 20 )  and coupled to the drive motor ( 2 ) , in the axial extension of which the base plate ( 20 )  is provided with an opening ( 21 )  or recess for the passage of the cutter, wherein the base plate ( 20 )  contains a suction intake channel ( 23 )  which surrounds the opening ( 21 )  or recess over at least the larger part of its periphery which channel has at least a suction intake opening facing towards the opening ( 21 )  or recess and to which channel at least a suction extraction channel ( 36 )  is connected which extends upwards from the base plate ( 20 )  in the area of said first guide column ( 31 )  and runs in this area coaxially with said first guide column ( 31 )  and the end of which is remote from the base plate ( 20 )  can be connected to a suction extraction device, characterised in that said first guide column ( 31 )  is hollow and that said suction extraction channel ( 36 )  runs inside said first guide column ( 36 ) . 
     
     
       2. A router according to claim  1 , characterised in that the connection ( 33 )  for the suction extraction device is provided at the upper end of said first guide column ( 31 ) . 
     
     
       3. A router according to claim  1 , characterised in that the outside diameter of said first guide column ( 31 )  is larger than the outside diameter of said second guide column ( 30 ) . 
     
     
       4. A router according to claim  1 , characterised in that a tension spring ( 34 )  which surrounds the upper end of said first guide column ( 31 )  on the outside is provided between the cutter head ( 1 )  and the upper end of the hollow guide column ( 31 ) . 
     
     
       5. A router according to claim  4 , characterised in that said tension spring ( 34 )  is surrounded by a bellows ( 35 ) . 
     
     
       6. A router comprising: 
       
         a cutter head;  
       
       
         a first and second guide column, said cutter head being displaceable on said first and second guide columns;  
       
       
         a base plate supporting said first and second guide columns, said base plate including an opening for receiving a cutter coupled with said cutter head, and a channel in said base plate adjacent said opening; and  
       
       
         one of said guide columns defining an extraction channel, said extraction channel coupled with said base plate channel for exhausting debris at said base plate opening. 
       
     
     
       7. The router according to claim  6 , wherein said extraction channel being coupled with a suction device. 
     
     
       8. The router according to claim  6 , wherein said channel defined by a surface, said surface directing debris to said extraction channel. 
     
     
       9. The router according to claim  6 , wherein said guide column defining said extraction channel has a larger cross- sectional area than said other guide column.   
     
     
       10. The router according to claim  6 , wherein a suction extraction connection being coupled with said extraction channel for enabling connection of a suction source. 
     
     
       11. The router according to claim  6 , wherein a connection channel is positioned between said base plate channel and said extraction channel. 
     
     
       12. The router according to claim  6 , wherein a cover is coupled with said base plate adjacent said opening. 
     
     
       13. The router according to claim  12 , wherein said cover being transparent. 
     
     
       14. The router according to claim  10 , wherein a holding ring being coupled with said guide column for enabling removable insertion of said suction extraction connection. 
     
     
       15. The router according to claim  14 , wherein a biasing member being positioned on said guide column between said holding ring and said cutter head for providing a force for movement of said cutter bead along said guide columns.