應用於快速原型機之PowerSHAPE模型適應性切層研究

本研究主要是應用Visual Basic 6.0開發一套電腦輔助設計(Computer Aided Design；CAD)軟體之快速原型（Rapid Prototyping；RP）直接適應性切層技術，運算法則是利用曲面資料在Z軸方向餘弦所計算的切層厚度。本研究主要目的是克服目前快速成型機，所使用之STL檔案格式之資料重複記錄與精度誤差等問題。在本研究中所開發之適應性直接切層技術所應用之軟體為，英國Delcam公司的所發展的CAD/CAM軟體統稱，為Power Solution，其中的CAD模組為Power SHAPE，此軟體模組功能相當齊全，因此極適合利用來發展適應性切層及直接切層軟體。而在Power SHAPE的切層介面開發有三種方式；（1）應用巨集功能內的記錄功能，此功能可以將所使用過的指令記錄下來，但缺點在於無法應用於不同的CAD模型上；（2）編輯巨集指令檔(Macro Files)，比巨集功能更見彈性，可應用於不同模型上，但缺點為沒有一個友善的介面；（3）應用Visual Basic開發CAD切層介面，此方法改善了上述兩項的缺點，應用Visual Basic不但可以自行開發友善的介面，並且可以應用Visual Basic運算的功能在不同的模型上。本研究所發展的程式介面弁鄍D要著眼於適應性切層法和直接切層法(Adaptive Slicing)。功能包括取得模型資料並進行預切、精度設定、最厚成型高度參數及切層輪廓運算等。最後本研究亦利用ㄧ個內含於PowerSHAPE之範例模型進行操作示範，並與非適應性之直接切層結果進行比對。由比較結果可得知在減少切層數或是提高精度的表現上適應性切層的確有較佳的表現。

關鍵字

適應性切層；快速原型； PowerSHAPE

並列摘要

The major objective of the research is to develop the software that can make direct adaptive slicing on a 3D surface model. Because cos-1(z) is used to calculate the slicing thickness with the surface model, the shortcoming of the STL data format is then overcome and the actual model from the Rapid Prototyping Process would be more accurate. During the development, Microsoft Visual Basic 6.0 and Delcam PowerShape are utilized to fulfill the task. Although PowerShape is a very strong 3D modeling software especially with its Macro functions, the user interface however is not as user-friendly as we want. Therefore, Microsoft VB is here taking to role of bridging. Moreover, the computation capability of MS VB is also utilized to make necessary calculations. The completed computer user interface, developed from this project, includes import data file; pre-slicing; setting of precision; setting of maximum height parameter; slicing contour calculation; and options of adaptive Slicing or Direct Slicing. This slicing technology not only allows the user to analyze any particular surface on the 3D model, it also allows the user to specify his necessary accuracy.

並列關鍵字

Adaptive Slicing ； Rapid Prototyping ； PowerSHAPE

參考文獻

[3]陳延昌，“紫外光原型件成型技術精敏化之研究”，國立師範大學，工業教育研究所，2002。

[4]Chua Chee Kai, Gan G. K. Jacon and Tong Mei, “Interface between CAD and rapid prototyping systems. Part 1: A study of exiting interfaces”, International Journal of Advanced Manufacturing Technology, 13, pp.566-570, 1997.

[5]Gan G. K. Jacob, Chua Chee Kai and Tong Mei, “Development of a new rapid prototyping interface”, Computers in Industry, 39, pp.61-70, 1999.

[7]R. Jamieson and H. Hacker, “Direct slicing of CAD models for rapid prototyping”, Rapid Prototyping Journal, Vol.1, No.2, pp.4-12, 1995.

[11]Dolenc, A. and Mäkelä, I., “Slicing procedures for layered manufacturing techniques”, Computer-aided-Design, Vol. 26 No. 2, pp. 119-26 , February 1994.

國際替代計量

應用於快速原型機之PowerSHAPE模型適應性切層研究

未授權

主題瀏覽