Heat absorbing throw away tip and heat sink throw away tool using this

摘要

This paper relates to a throw away tip having heat absorption performance and a throw away tool using the same. The throw away tip (3) is attached to a shank (2) having a fluid introduction passage (12) and a discharge passage (13), and the throw away tip (3) passes through the corners of the plurality of corners (C1, C2, C3, C4) sequentially through each corner It is characterized in that there is a connecting passage disposed in the end area of the cooling passage 30 so as to communicate with the inlet passage 12 and the discharge passage 13 when both corners are used.