容器の冷間押出し加工における偏肉 : 第1報, ポンチ荷重の偏心および横荷重の測定

概要

論文の詳細を見る
Punch load P, eccentricity in punch load (deviation of punch load center from the punch axis, e^^→_P) and lateral force F^^→ exerted on the punch head are measured by a newly developed test apparatus of forward cup extrusion. The elastic deflection of the punch, <O_PO_P>^^^→, is calculated from P, <e_P>^^^→ and F^^→, then, eccentricity of the outer and inner diameters of the cup,<O_dO_P>^^^→, is evaluated by <O_dO_P>^^^→=<O_dO_P>^^^→+<O_PO_P>^^^→, where <O_dO_P>^^^→ is the initial eccentricity of die and punch. Though the directions of <e_P>^^^→ and F^^→ did not necessarily coincide with the direction of <O_dO_P>^^^→ and varied (rather complicatedly) during the process, the calculated eccentricity of the outer and inner diameters of the extruded cup almost coinsided with the measured one.
1989-06-25