Abstract: A coordinate measuring machine has a single vertical column mounted to a horizontal table for moving in the x-direction, and a carriage mounted on the column for vertical movement in the z-direction. The column is moved with a motor that drives a rack and pinion. The carriage supports a y-rail that moves in the y-direction. A first damper is positioned over the z-rail in the -y direction so that the column is intermediate the damper and the probe. A second damper is positioned at an end of the y-rail near the probe. The dampers reduce both large amplitude transients, as well as steady-state vibrations that are caused by the motor cogging and gearing between the motor and the rack and pinion.

Abstract: The invention relates to a machine tool of the type having a rotatable support for the material to be worked upon and a slide movable toward the work carrying a programmed turret with a plurality of tool supports which may be indexed to position one tool at a time for operation on the work and more particularly to mounting of the tool turret for indexing with torsional stiffness and for recessing of the work radially of its axis of rotation by a hydraulic means while maintaining torsional stiffness.