Guided power tool and method for operating a guided power tool

Abstract

The present invention is based on a method for operating a guided power tool ( 10 ), in particular an electric power tool, with a rotatably and/or percussively driven insert tool ( 36 ), whereby the insert tool ( 36 ) is driven into a work piece ( 34 ) in a work process. It is proposed that at least one measured signal detected at the power tool ( 10 ) during the work process is evaluated to derive a property of the work piece ( 34 ) located in the working direction of the insert tool ( 36 ), and the power tool ( 10 ) is operated in accordance with the property. A guided power tool is also proposed.

1 . A method for operating a guided power tool ( 10 ), in particular an electric power tool, with a rotatably and/or percussively driven insert tool ( 36 ), whereby the insert tool ( 36 ) is driven into a work piece ( 34 ) in a work process, 
 wherein at least one measured signal detected at the power tool ( 10 ) during the work process is evaluated to derive a property of the work piece ( 34 ) located in the working direction of the insert tool ( 36 ), and the power tool ( 10 ) is operated in accordance with the property.    
   
   
       2 . The method as recited in  claim 1 , 
 wherein the detection and evaluation are carried out repeatedly during the work process.    
   
   
       3 . The method as recited in  claim 1 , 
 wherein detection and evaluation are carried out permanently during the work process.    
   
   
       4 . The method as recited in  claim 1 , 
 wherein the power tool ( 10 ) automatically adapts to the property of the work piece ( 34 ).    
   
   
       5 . The method as recited in  claim 1 , 
 wherein a warning signal is output when a machining problem is detected.    
   
   
       6 . The method as recited in  claim 1 , 
 wherein at least one of the signals from the group composed of vibrations, sound, torque, electric current and/or electrical voltage at the drive motor ( 10 ), a rotational speed of the drive motor ( 12 ) and/or of the insert tool ( 36 ) is detected.    
   
   
       7 . The method as recited in  claim 6 , 
 wherein two or more signals are combined to derive the properties of the work piece ( 34 ).    
   
   
       8 . The method as recited in  claim 1 , 
 wherein a vibration signal of the insert tool ( 36 ) is monitored and, when the vibration signal changes, it is analyzed with regard for an embedded object located in the working direction of the insert tool ( 36 ) and, when an embedded object ( 38 ) is detected, the drive of the insert tool ( 36 ) is adjusted and/or an alarm signal is output.    
   
   
       9 . A guided power tool, with which an insert tool ( 36 ) is drivable by a drive motor ( 12 ) located in a housing ( 18 ), 
 wherein an evaluation unit ( 24 ) is provided, with which detected sensor signals are capable of being evaluated to derive properties of the work piece ( 34 ) in a working direction.    
   
   
       10 . The power tool as recited in  claim 9 , 
 wherein at least one sensor ( 26 ,  28 ) is provided to detect at least one signal from the group composed of vibration, sound, torque, electric current, electrical voltage, rotational speed.    
   
   
       11 . The power tool as recited in  claim 9 , 
 wherein a striking mechanism control ( 32 ) is provided.