Psychoacoustic gear tooth flank form modification

A method of producing a tooth flank surface on gear teeth by controlled removal of stock material from a work gear with a tool, said method comprising:

• providing a gear producing machine, said machine having plurality of axes and comprising a work piece spindle rotatable about a work axis A and a tool spindle rotatable about a tool axis C, said work piece spindle and said tool spindle being movable with respect to one another along at least one of linear axes X, Y and Z and about a pivot axis B,
• providing a workpiece on said work piece spindle,
• providing a tool on said tool spindle,
• engaging said tool with said work gear,
• moving said tool and said work gear relative to one another in a generating motion comprising a generating roll along and/or about said plurality of axes,
• removing stock material from the work gear to produce the tooth surface on said work gear,
• wherein the generating motion along and/or about said plurality of axes comprises a modified motion along and/or about at least one of the axes, said modified motion being defined by a function comprising a first level component and a second level component, said first level component defining a maximum flank form deviation amplitude for each tooth of the work gear, and said second level component defining a modification of the tooth surface of each tooth of the work gear.