The utility model provides a diamond cutting line production facility is with lead wire wheel micromatic setting, includes liquid accumulation box, the liquid accumulation box lateral wall is equipped with the bearing housing equipment and installs the axle in the bearing housing equipment, epaxial cover is equipped with the lead wire wheel that lies in liquid accumulation box inner zone V -arrangement groove, covers the corresponding line hole excessively of V -arrangement groove tank bottom that is equipped with and goes between the wheel on the liquid accumulation box, the epaxial lock nut who is used for locking lead wire wheel that is equipped with. The utility model discloses the technological problem of difficulty is so only adjusted through simple structural design alright solution lead wire wheel to can guarantee lead wire wheel in the course of the work V type tank bottom cross the light centering in line hole center with the liquid accumulation box upper cover, the adjustment is simple more, convenient, therefore it not only can prolong the life of lead wire wheel, also reducible site work personnel's intensity of labour.