Patent ID: 7086316

Claim:
A vertical lathe comprising: a machine frame; a workpiece accommodation spindle disposed on said machine frame; a workpiece chucking device at a bottom end of said spindle for accommodation of a workpiece; a spindle drive motor drivable for rotation of said spindle about a vertical axis of rotation that runs in a Z 1 direction; a Z 1 drive motor displaceable of said spindle only in said Z 1 direction; a first tool holder for accommodation of a first tool; an X 1 drive motor displaceable of said first tool holder only in a horizontal X 1 direction; a second tool holder for accommodation of a second tool; an X 2 drive motor displaceable of said second tool holder in a horizontal X 2 direction; a Z 2 drive motor ( 20 ), displaceable of said second tool holder in a vertical Z 2 direction; and a control unit for triggering said spindle drive motor, said Z 1 drive motor, said X 1 drive motor, said X 2 drive motor, and said Z 2 drive motor during rotary machining of the workpiece.