The invention discloses a
machining method for a
drill bit with blade inclined groove structures for
machining a
composite material, belongs to the technical field of drilling tools in
machining, andrelates to the machining method for the
drill bit with the blade inclined groove structures for machining the
composite material. According to the machining method, a downward component force is generated by a front tool face of the
drill bit to an inlet material, turning-up of the inlet material is restrained, and the end face blade inclination angle at the outer edge turning point of a tool tiparea of the
drill bit is made to be a positive value. In the tool tip area of the
drill bit, the front tool face and a rear tool face are partially ground firstly. Then, a
grinding wheel is used for
grinding the front tool face at the outer edge turning point to obtain the two blade inclined groove structures. After
grinding, a new front tool face and a new blade are obtained, and the end face blade inclination angle formed by the new blade and a base face is a positive angle. According to the
drill bit with the blade inclined groove structures machined through the method, the current situation that the end face blade inclination angles of traditional drill bits are all negative angles is changed, stripping and layering of
fiber materials at the inlet position can be effectively restrained, inlet tearing and burr damage are effectively prevented, and low-damage machining of a hole inlet during
composite material drilling is achieved.