Gearing method with tooth finishing and combination tool therefor

A method for producing gears, the method including providing a combination tool comprising a skiving wheel and a tooth machining tool, the combination tool having a clamping end and a free end, the skiving wheel being mounted more proximate to the clamping end than to the free end, and the tooth machining tool being mounted more proximate to the free end than to the clamping end,

• in a first step, the clamping end of the tool and the skiving wheel are rotationally driven by a tool spindle, such that the skiving wheel produces a gearing in a workpiece gear, the gearing having tooth flanks that extend in a direction,
• wherein in the first step, the workpiece gear is rotationally driven synchronously with the skiving wheel by a workpiece spindle, the workpiece spindle and the tool spindle are aligned at an axial intersection angle (a) to one another and an advance takes place in the direction of the tooth flanks of the gearing,
• in a second step, at least a plurality of teeth of the gearing are machined with the tooth machining tool, wherein the tooth machining tool is an undercutting or grooving tool and grooves or undercuts, respectively, are machined into the teeth of the gearing,
• wherein the tooth machining tool and the skiving wheel are rigidly connected to one another, and wherein the combination tool remains connected to the tool spindle and the workpiece gear remains connected to the workpiece spindle for the duration of the first step, to the second step, and an entire time between the first step and the second step,
• wherein the two machining steps are carried out with different speed ratios and axial intersection angles (a) and regarding the tool spindle and the workpiece spindle, merely the position of the tool spindle relative to the workpiece spindle and the speed ratio between the tool spindle and the workpiece spindle are changed during a time between the end of the first step and the beginning of the second step.