Method for dressing a grinding tool

Abstract

Method for dressing a grinding tool by means of a machine tool including dressing the grinding tool with a form dressing roller and generating a tool profile on the grinding tool by a contact between the rotating grinding tool and the rotating form dressing roller along a dressing path, and generating relative movement therebetween along the dressing path automatically with the aid of two or more NC axes, wherein during the relative movement along the dressing path and during the contact between the form dressing roller and the grinding tool, each of the NC axes has an axial velocity with an absolute value greater than zero, and none of these NC axes carries out a directional reversal or comes to a standstill.

What is claimed is: 
     
         1 . A method comprising:
 mounting a dressable grinding tool in a machine tool;   mounting a form dressing roller in the machine tool;   rotating the grinding tool,   rotating the dressing roller; and   dressing the grinding tool with the form dressing roller, and generating a tool profile on the grinding tool by relative movement and contact between the rotating grinding tool and the rotating form dressing roller along a dressing path,   wherein the method includes generating said relative movement along the dressing path automatically using at least two NC axes of the machine tool; and   wherein, during the relative movement along the dressing path and during the contact between the form dressing roller and the grinding tool, each of the at least two NC axes defines an axial velocity with an absolute value greater than zero, and none of the at least two NC axes reverses direction or comes to a standstill.   
     
     
         2 . The method according to  claim 1 , wherein the dressable grinding tool defines a dressable grinding wheel. 
     
     
         3 . The method according to  claim 2 , wherein the grinding wheel defines a wheel profile defining a wheel profile cross section defining at least one local minimum and/or at least one local maximum, wherein the local minimum and/or local maximum are dressed in a continuous pass. 
     
     
         4 . The method according to  claim 1 , wherein the grinding tool defines a dressable grinding worm. 
     
     
         5 . The method according to  claim 4 , wherein
 the grinding tool defines a grinding worm defining a worm profile defining a worm profile cross section defining a plurality of local minima and/or local maxima, and   wherein the dressing step includes dressing at least one local minimum and/or one local maximum in a continuous pass.   
     
     
         6 . The method according to  claim 1 , wherein
 the grinding tool defines a profile defining a profile cross section defining at least one local minima and/or local maxima, and   the step of generating relative movement includes generating two-dimensional axial movement using two of the at least two NC axes of the machine tool, and using a third of said at least two NC axes to define the dressing path as a three-dimensional dressing path.   
     
     
         7 . The method according to  claim 3 , wherein
 the grinding tool defines a profile defining a profile cross section defining at least one local minima and/or local maxima, and   the step of generating relative movement includes generating a two-dimensional axial movement using two of the at least two NC axes of the machine tool, and using a third of said at least two NC axes to define the dressing path as a three-dimensional dressing path.   
     
     
         8 . The method according to  claim 1 , wherein one of the NC axes defines a linear axis. 
     
     
         9 . The method according to  claim 1 , wherein one of the at least two NC axes defines a pivot axis or rotational axis. 
     
     
         10 . The method according to  claim 8 , wherein one of the at least two NC axes defines a pivot axis or rotational axis. 
     
     
         11 . The method according to  claim 1 , wherein at least one of the at least two NC axes define linear axes, wherein the axial velocity of each of the linear axes defines an absolute value of at least 1 μm/s. 
     
     
         12 . The method according to  claim 11 , wherein the absolute velocity is at least 10 μm/s. 
     
     
         13 . The method according to  claim 1 , wherein at least one of the at least two NC axes defines a rotational axis or a pivot axis, wherein each of the at least one of the at least two NC axes defining a rotational axis or pivot axis defines a rotational velocity or pivot velocity defining an absolute value of least 1*10 −6 °/s. 
     
     
         14 . The method according to  claim 13 , wherein the absolute value of said rotational velocity or pivot velocity is at least 10*10 −6 °/s.