Method of dressing a tool

A method of dressing a tool, which can be used for gear tooth machining of a workpiece, on a dressing machine comprising a dresser, the method comprising:

• dressing the tool with line contact between the dresser and the tool;
• and
• producing a specific modification of a surface geometry of the tool in that a relative position of the dresser with respect to the tool is varied in dependence on a tool width position during dressing, wherein the specific modification of the surface geometry of the tool is specifiable or is produced according to one or both of the following:
• the specific modification has the form of a linear and quadratic function in a first direction of the tool, with coefficients of the linear and quadratic function being formed in a second direction of the tool which is perpendicular to the first direction by coefficient functions FFtC,1 for a constant portion, FFtL,1 for a linear portion, and FFtQ,1 for a quadratic portion, with FFtC,1 not depending linearly on a position in the second direction and FFtL,1 not being constant;
• and
• a pitch, a crowning, or both, of the specific modification varies in dependence on the tool width position and a tooth thickness varies non-linearly in dependence on the tool width position.

A method of dressing a tool, which can be used for gear tooth machining of a workpiece, on a dressing machine comprising a dresser, the method comprising:

• dressing the tool with line contact between the dresser and the tool;
• and
• producing a specific modification of a surface geometry of the tool in that a relative position of the dresser with respect to the tool is varied in dependence on a tool width position during dressing, wherein the specific modification of the surface geometry of the tool is specifiable or is produced according to at least one out of:
• the specific modification of the surface geometry of the tool is specifiable at at least one rolling angle as a function C0FS of a position in a tool width direction and at least a pitch of the surface geometry of the tool in a first direction of the tool which has an angle ρFS to the tool width direction is specifiable as a function of the position in the tool width direction;
• the specific modification of the surface geometry of the tool is specifiable as a function of the tool width position at at least two rolling angles;
• the specific modification of the surface geometry of the tool is specifiable as a function of the tool width position at at least one rolling angle and additionally an association of a specific radius of the dresser with a specific radius of the tool takes place, with the association being specifiable as a function of the tool width position;
• at least a pitch of the specific modification of the surface geometry of the tool in a first direction of the tool which has an angle ρFS to the tool width direction is specifiable as a function of the position in the tool width direction, the pitch being produced by the variation of the relative position of the dresser with respect to the tool when dressing in dependence on the tool width position, and additionally an association of a specific radius of the dresser with a specific radius of the tool takes place, with the association being specifiable as a function of the tool width position;
• and
• at least a crowning of the specific modification of the surface geometry of the tool in the first direction of the tool which has the angle ρFS to the tool width direction is specifiable as a function of the position in the tool width direction, the crowning being produced by the variation of the relative position of the dresser with respect to the tool when dressing in dependence on the tool width position.