Automated Planning for Material Shaping Operations in Additive/Subtractive Solid Freeform Fabrication

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Date

1999

Authors

Dong, Jianpeng
Kao, Ju-Hsien
Pinilla, Jose M.
Chang, Yu-Chi
Prinz, Fritz B.

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Abstract

Combining the advantages of layered manufacturing and material removal processes, additive/subtractive solid freeform fabrication (A/S SFF) can build parts with complex shapes without compromising precision requirements. However, preparing material removal operations requires special expertise, which has in fact become one of the bottlenecks of the A/S SFF manufacturing process. To achieve automated planning, a shaping process planner is being developed based on. 3D solid representation and a surface classification scheme. This planner can generate numeric control (NC) codes for CNC milling in an automatic fashion on non-undercut features of arbitrary 3D input geometry. Planning approaches are also presentedinorde~to>shape parts accurately and efficiently. The proposed shaping planner thus delivers on the promise offully automated process planning in A/S SFF.

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