Device and method for machining an optical workpiece

A device for machining or turning of a workpiece, comprising:

• a tool,
• a linearly movable component for linear movement of one of the workpiece and the tool in a direction of movement, and
• at least one of:
• at least two flat guides for fluidic guidance of the movable component and for support in a vertical direction being located on opposite sides of the movable component and a side guide for fluidic guidance of the component lateral transversely to the direction of movement,
• a workpiece drive with a spindle unit, the spindle unit having a bearing part and a spindle which is pivoted therein, the movable component forming the bearing part, and the spindle being provided with a receiver for holding the workpiece, and
• a turntable and a linear drive which is carried by the turntable and which moves the movable component and the tool forward and back and which, during machining of the workpiece, is pivotable for varying a contact point of a cutting edge of the tool on the workpiece by means of the turntable.

A method for facing of an optical flat side of an optical workpiece, comprising the steps of:

• rotating the workpiece around an axis of rotation and
• moving a tool forward and back by means of a linear drive depending on a rotational position of the workpiece,
• wherein during the machining of the flat side of the workpiece, at least one of the following operations is performed:
• the linear drive is pivoted around a vertical axis for variation of a contact point of a cutting edge of the tool with the workpiece, and
• the workpiece is fed to the tool in a direction of the axis of rotation by means of a linear drive, the linear drive being movable by means of a slide in a transverse direction transversely relative to the axis of rotation and being pivoted by means of a turntable carried by a slide around an axis transversely relative to the axis of rotation and the transverse direction.