Patent ID: 7690872

Claim:
A chattering vibration inhibiting mechanism of a machine tool designed to inhibit chattering vibration caused in machining by the machine tool provided with a spindle head supporting a spindle equipped with a tool in a rotatable manner, comprising: a box-shaped package body attached to said spindle head; a supporting member disposed in said box-shaped package body; and a damper composed of an elastic member and a weight which are supported by said supporting member; wherein said supporting member is disposed to bridge mutually facing walls of said box-shaped package body to make an axis line thereof be in parallel with a spindle axis of said spindle head, and wherein said damper is composed of a weight in a plate shape and a pair of elastic members in a plate shape fixed to both surfaces of the weight, attached to said supporting member, and fixed to said supporting member by a pair of double nuts screwed with said supporting member, and an attaching position of said damper in the axial direction of said supporting member is adjusted by fastening or loosening the double nuts.