ワイヤ放電加工による極薄板用の抜型製作の研究 : ポンチ、ダイ同時加工とその打抜精度

概要

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This paper presents precise punching die making method by means of tapered wire EDM under one time operation, for very thin plate (0.05mm stainless sheet metal), without skilled clearance adjusting work. In the first place, necessary conditions for obtaining precise small clearance and clearance adjusting method with high accuracy are described. Secondly, burr height distribution was measured while 35000 punching shots as appraisal testing of the punching die. Trend of the burr shows uniformly distributed in circumference of punched profile with negligible small burr height (5μm). While this experimental range, even in case of 35000 shots, burr height dimension is shown constant, therefore life time of this punching die seems so long. This die making method makes realize based on following reasons, the both edge of punch and die is always naturally made wire EDM machiriing at same condition (e. g. specific resistivity and temperature of liquid) because in same moment, and diamond dies type wire guide keeps accuracy of taper cutting compared with V type wire guide.
公益社団法人精密工学会の論文
1983-09-05