Direct-drive numerical control rotary table

The invention relates to a direct-drive numerical control rotary table which comprises a base, a motor rotor, a motor stator, a bearing, an adapter shaft and a workbench, and the motor rotor, the motor stator and the bearing are distributed in the base from inside to outside in the radial direction; the coupling shaft is respectively connected with the motor rotor and the bearing, the workbench is fixed on the coupling shaft, and the motor rotor and the motor stator interact to drive the coupling shaft to drive the workbench to rotate. The rigidity of the rotary table is greatly improved, the axial size is reduced, a machine tool can obtain a larger feeding space, and the requirement for high-precision machining of large workpieces can be met without changing the structure of the machine tool. 本发明涉及一种直驱数控转台，包括基座、电机转子、电机定子、轴承、转接轴和工作台，电机转子、电机定子和轴承在基座内由内向外径向分布；转接轴分别与电机转子和轴承联接，工作台固定于转接轴上，电机转子和电机定子相互作用可驱动转接轴带动工作台旋转。本发明大大提高了转台刚性，减小了轴向尺寸，有利于机床获得更大的进料空间，无需改变机床结构，即可满足大型工件的高精度加工需求。