Abstract
In recent years, demands of miniaturization and thinner component parts have been increased corresponding to the increase of miniaturized and multi-functionalized digital home appliances or advanced medical equipment. It is difficult to manufacture such micro products under conventional methods. Powder metal process with improved compactibility may be applicable and attractive technology to achieve it. The authors attempted sintering of a micro gear with a multi-step axis, which is unable to be sintered by conventional powder metallurgy or machining. Then a cylindrical discharge mechanism has been invented and provided in the die. Forming has been done using a die driven by a servomechanism. Sintered structure and dimensional accuracy of the gear were investigated.
