單點增量成形法之螺旋刀具路徑規劃及偏心錐管製作

A Study of Spiral Tool Path Planning and Eccentric Cone Tube Manufacturing Using Single Point Incremental Forming Process

林啟正(Chi-Cheng Lin)

指導教授 ： 蔡哲雄

國立臺北科技大學/機電學院/機電整合研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00317

摘要

本文以板金單點增量成形法結合孔切削操作探討偏心錐管的製程規劃。偏心錐管的錐面及管端凸緣孔的成形係以等參數螺旋刀具路徑模式之單點增量成形法完成，凸緣成形前的預製孔則以端銑刀切製。本文應用直紋曲面及昆氏曲面法可設計各種偏心斜錐面，並應用其參數曲面方程式資料計算出等參數螺旋成形路徑。本文以碳化鎢成形刀具及以鋁合金、不鏽鋼板材實作加工若干實例結果，錐管表面殘留的螺旋紋路流暢一致而光平，且管端凸緣孔形狀均勻良好，顯示本文提出的製程規劃法適用於板金錐管或偏心錐管的製作。

關鍵字

單點增量成形 ； 昆氏曲面 ； 螺旋式路徑 ； 偏心錐管 ； 凸緣

並列摘要

In this paper, the eccentric cone tube process planning was investigated by using single point incremental forming (SPIF) and prefabricated hole cutting operations. The SPIF with iso-parametric spiral tool path was used for the forming of cone surface and hole flange of the eccentric cone tube. An end mill cutter was used to mill the required prefabricated hole before the flange forming process. A variety of the eccentric cone surfaces can be modeled as a ruled surface or Coon’s surface. Then the iso-parametric spiral tool path can be calculated by using the information of the surface parametric equations. Several eccentric cone tube forming experiments were carried out including aluminum alloy and stainless steel sheet metal materials with WC forming tool. The manufactured cone tubes have a satisfied surface quality and geometric shape on both cone surface and hole flange in which all the residual spiral tool marks reveal smoothly and uniformly. The results show that the present process planning can be applied to manufacture eccentric cone tubes successfully.

並列關鍵字

Single point incremental forming (SPIF) ； Coon’s surface ； Spiral tool path ； Eccentric cone tube ； Flange

參考文獻

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