117 材料流動の変化に着目した押出しによるヘリカルフィン付パイプの成形方法の開発(OS-3 最新工作機械・多軸複合加工)

概要

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For the manufacture products with helical gear, we had proposed a new extrusion process by using the divided die. In this method, the setting of the die is as follows: The die is divided into the direction of the circumference of the product. Afterwards, each divided dies were fixed with the gap by shifting the dies in the extrusion direction. In this paper, the fundamental characteristics of this extrusion process are investigated by carrying out extrusion test that variously changing the gap of die, velocity of stem and number of gear. The change in the velocity of stem doesn't influence the twist of gear so much. There is a limit in the value though the twist of gear increases, as the space between dies increases. The twist of gear increases with increasing the gap of the die. However, there is a limit of gap to produce the products.
2006-11-24