Adjustment mechanism for rotation runout and dynamic balance of rotating tool

摘要

A tool holder holding a rotating tool can be sucked in a direction of a rotational axis of a spindle and a direction perpendicular to the direction of the rotational axis, using a chuck. A projection is provided on an outer peripheral surface of the tool holder, and caused to collide against another projection with the spindle kept rotating, to displace the tool holder. Thus, runout and dynamic balance of the rotating tool are adjusted.

主权项

1. An adjustment mechanism for rotation runout and dynamic balance of a rotating tool that is attached to a spindle and is held by a tool holder, the adjustment mechanism comprising:
a chuck which sucks the tool holder in a direction of a rotational axis of the spindle and which sucks the tool holder in a direction perpendicular to the direction of the rotational axis of the spindle; a first projection provided on an outer peripheral surface of the tool holder; a second projection provided on a plane formed by a trajectory of the first projection when the spindle is rotated; and a distance change element that enables any change in a distance from the rotational axis of the spindle to the second projection until the first projection and the second projection collide against each other, wherein the position of the tool holder is displaced if the first projection and the second projection collide with each other by an external force applied to the first projection, a plurality of the first projections are disposed on the outer peripheral surface of the tool holder so as to have different phases in a rotation direction, a plurality of rotation planes formed by the trajectories of the first projections is arranged so as not to overlap one another with the spindle kept rotating, and changing a relative position between the spindle and the second projection enables a position to be set where any one of the first projections and the second projection collide against each other.