6Sato K,Miya R,Ozaki K,et al. Improvements of punched edge in aluminum sheets with urethane elastomer tools[J]. Journal of Japan Institute of Light Metals, 1982,32 (8) : 389-394.
7Takahashi F,Nishimur T,Suzuki I,et al. A method of blanking from amorphous alloy foils using rubber tool[J]. CIRP Annals -Manufacturing Technology, 1991,40 ( 1 ) : 315-318.