Device for testing the accuracy of a circuit of a machine tool to be performed by a work spindle and/or a machine table

摘要

The apparatus (10) has length measurement system that is arranged in measurement arm (28) and comprises of glass rod with a marking and reading device for determining the radial deviation of the work spindle (12) from a circular path. The adjusting device (34) receives the measurement arm and has second pivot bearing (38) with the pivot axis (40) aligned parallel to the first pivot axis (26). The second rotary bearing has second rotation axis aligned parallel to the rotation axis of the work spindle, while the stator (46) supports the second rotary bearing.