TOOL HOLDER WITH VARIABLE RADIUS OF GYRATION OF TOOL, MACHINE TOOL HAVING THE TOOL, AND PROCESSING METHOD USING SAID MACHINE TOOL

摘要

PURPOSE: The centrifugal force applied to two beams is offseted, the speed of rotation of the tool holder is signal-changed, and yet, the rotation balance maintains. CONSTITUTION: A tool holder fixing a tool(2) comprises a structure. The structure is elastically transformed into with the centrifugal force generating when the tool turns around a rotational center axis(4). The edge tip of tool oriented toward the rotational center axis. The radius of rotation of tool is signal-changed from zero to a predetermined value.