Patent ID: 8226337
Filing Date: 2012-07-24
Classification: B23B,Y10T

Abstract:
1. A tap holder for chucking a tap at one end thereof, comprising: a tap collet having one end and another end, said one end being configured to chuck a tap; a tapper body receiving an outer face side of said other end of the tap collet in an axial direction of the tapper body to fix the tap collet unrotatably, and said tapper body being configured so as to be attachable to a machine tool having a tap synchronizing feeding mechanism, collet being removably inserted into the tapper body; a locking member inserted through the tap collet and the tapper body at portions of the tap collet and the tapper body overlapping each other; an elastic member, wherein the locking member interlocks the tap collet and the tapper body in a state of interposing the elastic member on both sides in an axial direction between the locking member and at least one of the tap collet and the tapper body; and the locking member including a locking shaft portion having a first recessed portion at a peripheral face of the locking shaft portion thereof, the locking shaft portion being inserted through the tap collet and the tapper body and the elastic member being arranged at the first recessed portion.