Concept and realisation of a modular alignment turning machine

Exact mounting references manufactured by the alignment turning process are essential in order to effectively assemble high-quality optical systems. In order to extend the capabilities, a concept of a modular alignment turning machine was investigated and realized. The basic approach is a vertical, hydrostatic spindle (C-axis) integrated in a horizontal X-axis. The spindle carries an alignment chuck that manipulates the optical assembly in four degrees of freedom (Tx, Ty, Rx, Ry) according to the on-machine metrology. By moving the X-axis, the spindle-workpiece arrangement can positioned at three vertical Z-axis modules. They can flexible serve as machining or metrology stations.