the car dentatrice is of the type consisting of a pair of heads (2, 3) of bilateral coaxial support and handling a maker (4) axially cableone (2) of which is mobile, and to the other and is provided with first means (16) cooperating with corresponding phasing seconds means (6) associated with the phasing creator (4).it provides that the creator (4) bearing directly of their means of phasing (6) provides that each of the heads (2, 3) is associated a respective centering pin (7.8) axially cable, with a dog collar match (17.18) and alloggiabile complementarmente in the axial hole (5) of the creator (4) up to bat against it by the respective collarini (17, 18).it is one of the heads (2) and (3) is provided with a tirante (9) coaxial to it and the other (3 or 2) is provided with means (11) for detention and tensile of tirante (9) introduced thethe creator (4). (fig. 1).
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