@article{oai:ir.kagoshima-u.ac.jp:00010333, author = {松田, 豪彦 and MATSUDA, Takehiko and 中西, 賢二 and NAKANISHI, Kenji and 上谷, 俊平 and KAMITANI, Shunpei}, journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University}, month = {Oct}, note = {The flywheel, roller and knob can be formed directly from the cylindrical work-piece by cold axisymmetric upsetting with lateral extrusion. Lack of material filling was observed at the rim part of an extruded product, when an ordinal die was used. Then, the forming process and die was designed to achieve effective material flow to fulfill the lack portion of an extruded product. The product formed by the proposed forming process and die has the circular concave plane at the disk surface. When that concave plane is related to the base plane of an ornament plate in a knob and to the lightweight design of a product in a flywheel, the net shape forming can be achieved in the proposed forming process and die.}, pages = {1--8}, title = {プレス成形の加工プロセスと型設計に関する研究 : 回転ノブおよびフライホイールの成形加工}, volume = {48}, year = {2006} }