摘要(英) |
Injection molding is the most common method to produce plastic products, but the defects of a CAD model design cannot be found until CAE analysis or mold tried is implmented. Therefore, a concept of design for manufacturing (DFM), was developed to apply design guideline to quickly check the problems in the CAD model. This study is to develope a program for DFM analysis automatically, examine the design of a CAD model, and hopefully can avoid repeated CAE analysis and mold trial. In the proposed method, a feature recognition algorithm is employed to extract important feature from a CAD model. The dimensions of each feature are then evaluated. A DFM analysis is then implmented automatically based on a set of design guidelines for each type of feature. Deficits on the CAD models are finally displayed both in graphical and numerical formats. The operating procedures of the proposed program will be described and result of several CAD models will be discussed to demonstrate the feasibility of the proposed method. |
參考文獻 |
[1]陳星佑:〈CAE應用之混接面辨識技術發展〉,碩士論文,國立中央大學,2015。
[2]J. Y. Lai, P. P. Song, A. S. Hsiao, Y. C. Tsai, and C. H. Hsu, “Recognition and classification of protrusion features on thin-wall parts for mold flow analysis,” Engineering with Computers, 2019, pp. 1-22.
[3]蕭安勝:〈塑膠射出薄殼件之CAD模型凸起面特徵辨識與分模應用技術發展〉,碩士論文,國立中央大學,2019。
[4]張中瑋:〈塑膠射出成型之薄殼件中肋與管設計可製造化與設計變更技術研究〉,碩士論文,國立中央大學,2019。
[5]王明暄:〈應用於模流分析之CAD模型特徵辨識與實體網格品質提升之研究〉,博士論文,國立中央大學,2017。
[6]R. Kent, Quality management in plastics processing, Elsevier, 2016.
[7]GE, GE engineering thermoplastics design guide: Guidelines for injection molding design, GE Plastics, 1997.
[8]LANXESS, Engineering plastics: Part and mold design -A design guide, LANXESS Energizing Chemistry, 2007.
[9]BASF, Design solutions guide, BASF The Chemical Company, 2007.
[10]S. James, “A plastic injection molding part feature extractor and design advisory system,” PhD Dissertation, University of Cincinnati, 2010.
[11]B. Sinha, “Efficient wall thickness analysis methods for optimal design of casting parts,” Geometric Limited, 2007.
[12]J. Madan, P. V. M. Rao, and T. K. Kundra, “Computer aided manufacturability analysis of die-cast parts,” Computer-Aided Design and Applications, 2007.
[13]Stratasys, Injection molding design guidelines, Stratasys Ltd, 2015.
[14]S. Kumar, and J. Madan, “An automated system for design for manufacturability analysis for die-casting,” International Manufacturing Science and Engineering Conference, American Society of Mechanical Engineers, 2018.
[15]M. A. M. Amran, K. M. Faizal, M. S. Salleh, M. A. Sulaiman, and E. Mohamad, “Design consideration for design a flat and ring plastics part using Solidworks software,” IOP Conference Series: Materials Science and Engineering, Vol. 100, No. 1, 2015, pp. 12-50.
[16]Rhinoceros. http://www.rhino3d.com
[17]openNURBS. http://www.rhino3d.com/tw/opennurbs
[18]Libxl. https://www.libxl.com/home.html
[19]CADdoctor. http://elysiuminc.com/products/caddoctor/
[20]GrabCAD. https://grabcad.com
[21]DFMPro.https://dfmpro.geometricglobal.com/processes/dfmpro-for-injection-molding/. |