Abstract: A deep hole boring head is provided which is capable of rotating about a central axis, a body whose front part has at least one cutting edge followed by a recess which leads to a duct inside the body, this duct allowing the chips formed during the boring to be cleared away rearwards, and includes at a front end thereof and at a center portion thereof a pilot drill bit capable of guiding the head during boring. Use for the boring of a production piece is made of titanium, the ratio L/D between the depth L of the hole bored and the diameter D of the latter being greater than or equal to 10, and the diameter D being greater than or equal to 65 mm.

Abstract: The subject of the invention is a deep hole boring head capable of rotating about a central axis (A-A), comprising a body (2) whose front part (4) has at least one cutting edge (8a, 8b, 8c, 8d) followed by a recess (10a, 10b) which leads to a duct (12) inside the said body (2), this duct allowing the chips formed during the boring to be cleared away rearwards, characterized in that it comprises at its front end and at its centre a pilot bit (20) capable of guiding the said head during boring. Use for the boring of a production piece made of titanium, the ratio L/D between the depth L of the hole bored and the diameter D of the latter being greater than or equal to 10, and the diameter D being greater than or equal to 65 mm.