Method for processing a workpiece made of hard metal for producing a tool main body on a numerically controlled machine tool with tool-carrying work spindle

Abstract

A method for processing a workpiece made of hard metal for producing a tool main body on a numerically controlled machine tool with tool-carrying work spindle, comprising: accommodating a tool holder that holds a tool on a tool support of the work spindle of the machine tool, wherein the tool holder comprises a vibration generator for generating a vibration of the tool, and processing the workpiece which is clamped on the machine tool and is made of hard metal by the vibrating tool held on the tool holder for working out one or more recesses at the workpiece for producing the tool main body.

1 . A method for processing a workpiece made of hard metal for producing a tool main body on a numerically controlled machine tool with a tool-carrying work spindle, comprising:
 accommodating a tool holder holding a tool at a tool support of the work spindle of the machine tool, wherein the tool holder comprises a vibration generator for generating a vibration of the tool, and   processing the workpiece which is clamped on the machine tool and made of hard metal by means of the vibrating tool held on the tool holder for working out one or more recesses at the workpiece for producing the tool main body.   
     
     
         2 . The method according to  claim 1 , wherein
 the tool is a grinding tool.   
     
     
         3 . The method according to  claim 2 , wherein
 the grinding tool comprises a grinding wheel and/or a grinding pencil.   
     
     
         4 . The method according to  claim 1 , wherein
 the vibration generator generates vibrations of the tool in a direction axial to the spindle axis direction of the work spindle, in a direction radial to the spindle axis direction of the work spindle and/or in the circumferential direction about the spindle axis of the work spindle.   
     
     
         5 . The method according to  claim 1 , wherein
 the vibrations of the tool that are produced by the vibration generator are in the ultrasonic range, in particular at frequencies of greater than 10 kHz.   
     
     
         6 . The method according to  claim 1 , wherein
 a work signal for generating the vibration of the tool is transferred to the vibration generator in a contactless fashion.   
     
     
         7 . The method according to  claim 1 , wherein
 the vibration generator comprises one or more piezoelectric actuators.   
     
     
         8 . The method according to  claim 1  wherein
 the working-out of one or more recesses at the workpiece comprises: 
 working out one or more chip flutes of the tool main body to be produced, 
 working out one or more plate seats of the tool main body to be produced, 
 working out one or more cooling channels of the tool main body to be produced, 
 working out one or more chamfers out of the tool main body to be produced, 
 working out one or more clearance angles of the tool main body to be produced, and/or 
 working out one or more cutting edges of the tool main body to be produced. 
 
     
     
         9 . The method according to  claim 8 , wherein
 working out one or more chip flutes of the tool main body to be produced, working out one or more plat seats of the tool main body to be produced, working out one or more cooling channels of the tool main body to be produced, working out one or more chamfers of the tool main body to be produced, working out one or more clearance angles of the tool main body to be produced and/or working out one or more cutting edges of the tool main body to be produced is done while the workpiece is clamped on the machine tool.   
     
     
         10 . The method according to  claim 8 , wherein
 working out one or more chip flutes of the tool main body to be produced, working out one or more plat seats of the tool main body to be produced, working out one or more cooling channels of the tool main body to be produced, working out one or more chamfers of the tool main body to be produced, working out one or more clearance angles of the tool main body to be produced and/or working out one or more cutting edges of the tool main body to be produced is carried out in each case by means of different tools, in particular grinding tools.   
     
     
         11 . The method according to  claim 10 , further comprising
 exchanging the tool holder for a second tool holder holding another tool, wherein the second tool holder comprises a second vibration generator for generating the vibration of the other tool, and   processing the workpiece which is clamped on the machine tool and is made of hard metal by means of the vibrating other tool held on the second tool holder for working out one or more further recesses on the workpiece for producing the tool main body.   
     
     
         12 . The method according to  claim 11 , wherein
 one or more chip flutes are worked out with the other tool, in particular when one or more plate seats, one or more cooling channels, one or more chamfers, one or more clearance angles and/or one or more cutting edges have been worked out with the previously introduced tool,   one or more plate seats are worked out with the other tool, in particular when one or more cooling channels, one or more chip flutes, one or more chamfers, one or more clearance angles and/or one or more cutting edges have been worked out with the previously introduced tool,   one or more cooling channels are worked out with the other tool, in particular when one or more chip flutes, one or more plate seats, one or more chamfers, one or more clearance angles and/or one or more cutting edges have been worked out with the previously introduced tool,   one or more chamfers are worked out with the other tool, in particular when one or more plate seats, one or more cooling channels, one or more chip flutes, one or more clearance angles and/or one or more cutting edges have been worked out with the previously introduced tool,   one or more clearance angles are worked out with the other tool, in particular when one or more cooling channels, one or more chip flutes, one or more chamfers, one or more plate seats and/or one or more cutting edges have been cut worked out the previously introduced tool, or   one or more cutting edges are worked out with the other tool, in particular when one or more chip flutes, one or more plate seats, one or more chamfers, one or more clearance angles and/or one or more cooling channels have been worked out with the previously introduced tool.   
     
     
         13 . The method according to  claim 11 , wherein
 the exchange of the tool-holding tool holder on the tool support of the work spindle of the machine tool is carried out by a tool change device set up for this purpose.   
     
     
         14 . The method according to  claim 1 , wherein
 the numerically controlled machine tool has at least five numerically controllable axes.   
     
     
         15 . A control apparatus of a numerically controlled machine tool with a tool-carrying work spindle and a tool holder which holds the tool and which can be accommodated on a tool support of the work spindle, wherein the control apparatus is configured to control the method according to  claim 1  on the machine tool. 
     
     
         16 . The control apparatus according to  claim 15 , further comprising
 a control panel configured to manually input data associated with the tool main body to be produced as a data set via the control panel.   
     
     
         17 . The control apparatus according to  claim 16 , wherein
 the control panel is configured in such a way that the manual input of the data associated with the tool main body to be produced as a data set comprises a menu-guided manual input of the data associated with the tool main body to be produced as a data set.   
     
     
         18 . The control apparatus according to  claim 15 , further comprising
 an interface configured to receive a data set associated with the tool main body.   
     
     
         19 . The control apparatus according to  claim 16 , wherein
 the data set comprises parameters relating to a geometry of the tool main body to be produced and optionally admissible tolerance ranges of the geometry of the tool main body to be produced.   
     
     
         20 . The control apparatus according to  claim 16 , wherein
 the data set comprises model data which indicates a three-dimensional geometry model of the tool main body to be produced.   
     
     
         21 . The control apparatus according to  claim 16 , wherein
 the data set comprises material data, which indicates the material properties of the tool main body to be produced.   
     
     
         22 . The control apparatus according to  claim 16 , wherein
 the control apparatus is configured to obtain the data set associated with the tool main body by reception or manual input and to control the method on the basis of the received data set or of the data set inputted manually via the control panel in a semi-automatic or fully automatic way on the machine tool.   
     
     
         23 . A computer program product with a computer program stored on a computer-readable data storage medium, which can be carried out on a numerical control apparatus or a numerically controlled machine tool having a tool-carrying work spindle and a tool holder which holds a tool and can be accommodated on a tool support of the work spindle, or in a computer connected to the control apparatus of the numerically controlled machine tool, and which is configured to control on the machine tool a method according to  claim 1 .