Cincinnati Milacron Inc.

Miles E Loretta, Jr

Richard A Curless

Paul E McCalmont

A damped, cantilevered support arm for a machine tool position monitoring device rigidly attached to the machine tool by a pair of spaced bolts for relative movement with a machine part along a longitudinal axis. The line of centers through the bolts is oriented along the longitudinal axis and the arm is mounted with shims located between its base and the machine tool part to allow limited effective freedom of movement of the support arm around the line of centers in a direction normal to the longitudinal axis. A squeeze-film damping chamber is provided between the spaced shims for reducing the response of the support arm in the normal direction during relative movement along the longitudinal axis. A boundary O-ring seal together with the thickness of the spacers, defines the damping chamber. Multiple degrees of freedom of movement and support arm response can also be accommodated by a stacked squeeze-film arrangement, wherein an oriented, rocking damper plate is sandwiched between the machine and support arm.

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Greer, SC, United States of America

Miles E Loretta, Jr