Patent ID: 9073228
Filing Date: 2015-07-07
Classification: B26D,Y10T

Abstract:
1. A cutting tool comprising: a base for placing on a workpiece; a tool unit supported on the base and comprising: a supporting arm connected to the base for supporting the tool unit; a fan rotatably driven by the electric motor and producing a flow of a cooling air for cooling the motor; and a blower duct utilizing the cooling air that cools the electric motor to blow off cutting chips or powder from a cutting point, wherein the blower duct is mounted to the supporting arm and comprises a wall that defines a passageway along a side of the rotary cutting blade leading to the rotary cutting blade via an opening in the supporting arm, wherein the opening is formed to extend through the supporting arm, and wherein the opening of the supporting arm directly faces an outer circumferential edge of the rotary cutting blade in a direction parallel to the rotational axis of the rotary cutting blade in such a way that there is no obstruction between the opening of the supporting arm and the outer circumferential edge of the rotary cutting blade in the direction parallel to the rotational axis of the rotary cutting blade.