Automatic drawing machine and drawing method

The invention discloses an automatic drawing polishing machine and a drawing polishing method. The automatic drawing polishing machine comprises a base plate, a sectional material frame, a feeding device, a threading device, a drawing polishing device and a discharging device, wherein a rotary circular truncated cone and a stepping motor are arranged on the base plate, a small-stroke air cylinder,a middle-stroke air cylinder and a feeding device are arranged on the rotary circular truncated cone, a large-stroke air cylinder and a pair of upper hand clamps and lower hand clamps are arranged onthe corresponding middle-stroke air cylinder below the rotary circular truncated cone, and a yard cylinder is arranged above the middle-stroke air cylinder; a needle plate part is conveyed to the lower part of the middle-stroke air cylinder through the feeding device, the lower hand clamps clamp a steel needle with silk, and the upper hand clamps penetrate through the middle-stroke air cylinder to clamp the steel needle a