Machine tool with a tool, and method for operating the machine tool

17:

• The machine tool as recited in claim 16 wherein the play lies in a range from 3 to 9 degrees.

18:

• The machine tool as recited in claim 16 wherein the play lies in a range from 5 to 7 degrees.

19:

• The machine tool as recited in claim 16 wherein the play is at 6 degrees.

20:

• The machine tool as recited in claim 16 wherein the play is provided between adjacent components of the power train.

21:

• The machine tool as recited in claim 16 wherein the motor setpoint current has a rectangular or sinusoidal shape.

22:

• The machine tool as recited in claim 16 wherein the motor setpoint current has an offset.

23:

• The machine tool as recited in claim 16 wherein an overall stiffness of the power train is less than a smallest individual stiffness of a component of the power train.

24:

• The machine tool as recited in claim 16 wherein the motor of the machine tool is a brushless DC motor.

25:

• The machine tool as recited in claim 16 wherein a ratio between a torque of the motor and an inertia of the motor is greater than 1,000 Nm/(kg·m2).

26:

• The machine tool as recited in claim 16 wherein the power train includes the motor, a transmission and a pinion, the pinion being designed to drive a gearwheel with a larger circumference than the pinion, wherein the gearwheel is arranged on an output shaft designed to drive the tool of the machine tool.

27:

• The machine tool as recited in claim 26 wherein the transmission has a single-stage design.

28:

• The machine tool as recited in claim 16 wherein a stiffness of the power train lies in a range from 1,000 to 100,000 Nm/rad.

29:

• The machine tool as recited in claim 16 wherein the power train includes a motor shaft, wherein a stiffness of the motor shaft lies in a range of greater than 50 Nm/rad.

30:

• The machine tool as recited in claim 16 wherein the play is a rotary play in the power train on the output shaft.

32:

• The method as recited in claim 31 wherein a ratio between a stiffness of the power train and a motor shaft lies in a range from 20 to 2,000.