The invention concerns a boring head, essentially consisting of a body (1) provided with a housing (2) for receiving two tool-holders (3), capable of being radially driven via a moving device (4), and of means (5) for locking the tool-holders (3) in operational position. Said boring head is characterised in that the means (5) locking the tool-holders (3) in operational position consists of a single clamping device simultaneously acting on the two tool-holders (3) and on the body (1). The invention is more particularly applicable in the field of machine-tool accessories, in particular digitally controlled machines, of machining plants and adaptable cells and workshops. |