Composite static rotary table and method for protecting composite static rotary table

A composite static rotary table, comprising:

• a housing body provided with a mounting space;
• a rotary table body driven by a connecting mandrel to rotate;
• a base, the connecting mandrel being arranged through the base;
• an air stopping film arranged between the rotary table body and the base;
• and
• an auxiliary supporting assembly fixedly arranged in the mounting space and configured for assisting the rotary table body to be levitated relative to the base,
• wherein the rotary table body further comprises:
• a first rotary table plate fixedly connected with one end of the connecting mandrel,
• the base being arranged adjacent to the first rotary table plate, and the air stopping film being arranged between the first rotary table plate and the base;
• and
• a second rotary table plate fixedly connected with the other end of the connecting mandrel and arranged adjacent to the auxiliary supporting assembly, a non-contact gap being arranged between the second rotary table plate and the auxiliary supporting assembly;
• wherein the auxiliary supporting assembly comprises:
• a homogenizing plate arranged in the mounting space, a non-contact gap being provided between the homogenizing plate and the second rotary table plate;
• and
• an ultrasonic wave transducer arranged in the mounting space and abutted against the homogenizing plate.