It offered a explanation and quantificational data of practice and academic research of that flanging with cone-shaped or global punch or parabola-shaped punch can lessen flanging force and reduce flanging limit coefficient.

• 为锥形、球形、抛物线形冲头的翻边能减少翻边力、降低极限翻边系数的实践与理论认识，提供了一种解释与定量数据。