Reconfigurable counter spindle module with integrated device for fast spindle alignment

An upcoming exchange of a machine tool spindle involves a downtime of several days for a cutting machine. This paper presents an innovative counter spindle module which can be replaced in significantly less time. The counter spindle module is developed in a methodical design process and is based on an effective high-precision alignment system, whose functionality and features are described in detail. Furthermore, an appropriate measuring process to identify the present deviation of a main or counter spindle is introduced. Finally, the operational capability and efficiency of the developed spindle alignment system is validated on the basis of the introduced measuring process.