Patent ID: 6463667
Filing Date: 2002-10-15
Classification: B23Q,G01B

Abstract:
A machine tool precision-measuring apparatus comprising: a first linear movement distance-measuring means including a first slide shaft, a first slide bush slidably attached to said first slide shaft, and a first distance sensor for measuring a distance that said first slide shaft relatively travels with respect to said first slide bush; and,a second linear movement distance-measuring means including a second slide shaft positioned across said first slide shaft, a second slide bush connected to said first slide bush, said second slide bush being slidably attached to said second slide shaft, and a second distance sensor for measuring a distance that said second slide shaft relatively moves with respect to said second slide bush, wherein a spindle of a machine tool to be measured is fixed to said first linear movement distance-measuring means via a mounting shaft and a mounting member, said mounting shaft being fixed to said spindle, said mounting shaft being attached to said mounting member in a state of being locatable at different positions in a longitudinal direction of said mounting member, while said second linear movement distance-measuring means is fixedly positioned on a base, whereby trajectories of said spindle moving in directions of X- and Y-axes are measured.