Variable-cross-section disc cutter ring and design and manufacturing method thereof

The invention relates to a variable-cross-section disc cutter ring and a design and manufacturing method thereof. The variable-cross-section disc cutter ring comprises a cutter body and a blade; the cutter body is a regular annular standard rotary body; the blade is arranged on the outer ring of the cutter body; the blade is a rotary body with the radial cross section outline changing regularly in the circumferential direction; and the blade width, the blade angle and the cutter shoulder angle are regularly changed along the circumferential direction. The designing and manufacturing method comprises the steps that CAD modeling is conducted on the variable-cross-section cutter ring through parameterization design, simulation experiments and analysis are simulated based on CAE finite elements, a model of the optimal variable-cross-section cutter ring of the feature size of the variable-cross-section disc cutter ring is obtained, and blank making, punching, ring rolling and die forging technological parameter si