Ultra-precise turn-milling center ram power shaft encoder structure

The utility model discloses an ultra-precise turn-milling center ram power shaft encoder structure which comprises a ram, a rotating shaft and a connecting box. Wherein the ram is arranged on a power rotating shaft of the numerical control vertical turning and milling center, and a connecting box is arranged on the outer side of the top end of the ram; a large synchronous pulley is arranged at the position, close to the outer side of the top of the rotating shaft, in the ram, a spacer bush is arranged on the inner wall, close to the rotating shaft, in the encoder support in an attached mode, and the top end of the coupler penetrates through the interior of the encoder base to be connected with the bottom of the encoder body. According to the ultra-precise turn-milling center ram power shaft encoder structure, the large synchronous belt wheel is arranged, when a machine tool conducts the milling function, the servo motor drives the transmission shaft to rotate through the large synchronous belt wheel, the smal