Patent ID: 6588993
Filing Date: 2003-07-08
Classification: B23B,Y10T

Abstract:
A tool holder for holding a shank of a cutter tool, the tool holder comprising:a supporting cylinder, wherein a supporting hole that receives the shank is formed in the supporting cylinder; a locking body that moves between a locking position and an unlocking position; a locking member supported by the supporting cylinder, wherein, when the locking body is located in the locking position, the locking member is moved radially inward with respect to the supporting cylinder by the body to engage with the shank, wherein, when the locking body is located in the unlocking position, the locking member is allowed to move in the radially outward direction of the supporting cylinder to release the shank; an engaging member located between the supporting cylinder and the locking body, wherein the engaging member moves between an engaging position, at which the engaging member locks the locking body with respect to the supporting cylinder, and a disengaging position, at which the engaging member releases the locking body from the supporting cylinder, wherein, when the engaging member is in the engaging position, the locking body is prevented from moving relative to the supporting cylinder and is held in the unlocking position, and when the engaging member is in the disengaging position, the locking body is allowed to move relative to the supporting cylinder, said engaging member being supported to move axially and said supporting cylinder having an engagement hole for receiving the engaging member, wherein the engaging member aligns with the engagement hole when the locking body is located in the unlocking position; and an unlocking body for moving the engaging member toward the disengaging position, and wherein the unlocking body is moveable independent from and relative to the shank.