Face milling, drilling and tapping machine tool for rear axle of car

The invention discloses a face milling, drilling and tapping machine tool for a rear axle of a car. The machine tool comprises a lathe bed, wherein a clamping mechanism used for fixing the rear axle of the car is arranged along the middle of the lathe bed, and rear axle machining devices used for face milling and drilling of the rear axle of the car are symmetrically arranged on the two sides of the clamping mechanism; a first sliding table is arranged at the bottom of the clamping mechanism, the first sliding table is arranged in the length direction perpendicular to the lathe bed, and the clamping mechanism is fixed to a sliding saddle of the first sliding table and drives the rear axle of the car to move in the length direction of the first sliding table. According to the clamping mechanism of the machine tool, besides main positioning and clamping, auxiliary supports are additionally arranged beside flanges at the two ends in two directions, gaps are eliminated, clamping deformation is avoided after auxil