Patent ID: 6979253

Claim:
A grinding machine for continuous grinding of a gear, the grinding machine comprising a grinding worm for grinding a workpiece and a work spindle drive, wherein said work spindle drive comprises a drive motor, a pinion being connected to the drive motor, a work spindle with a work spindle axis for said workpiece and a cylindrical work spindle gear rigidly connected to said work spindle and being driven by said pinion, wherein said pinion and said cylindrical work spindle gear have a transmission ratio i being approximately the sum of ±Δi and R, wherein R is an integer transmission ratio and Δ ⁢ ⁢ i = s min B * P where: s min a lower feedrate limit of a feed motion Z of said grinding worm parallel to said work spindle axis during finish grinding in mm per revolution of said work spindle, B a maximum width of said workpiece to be ground in mm, and P a number of torque disturbance periods of said drive motor per motor revolution.