@article{oai:nagoya.repo.nii.ac.jp:00007350,
 author = {栗本, 真司 and KURIMOTO, Shinji and 広田, 健治 and HIROTA, Kenji and 徳元, 大輔 and TOKUMOTO, Daisuke and 森, 敏彦 and MORI, Toshihiko},
 issue = {667},
 journal = {日本機械学會論文集 C編},
 month = {Mar},
 note = {A new ultra-fine piercing which had been proposed, have been conducted successfully, but has a few troublesome points. A die material is mild steel, and than a coupling of a die and a pierced material is that of metals. Therefore, pierced scrap accumulated in a die hole and stops a punch advancement. If the pierced material rises up unevenly from the die, a horizontal force acts on the punch and the punch defects, advances deviately and shaves the surface of the die hole. These were conquered by means of setting a vacuum chamber under the die. A scrap is sucked away from a die hole at each stroke and a foil of pierced material is pulled down through two holes remoted by 1 mm from the die hole. Thus a high precision and continuous process of the ultra-fine piercing is carried out.},
 pages = {987--992},
 title = {超微細穴抜き法の高精度化および連続加工化},
 volume = {68},
 year = {2002}
}