單工程深引伸沖模模具設計專家系統之開發

THE DEVELOPMENT OF AN EXPERT SYSTEM FOR SINGLE-ACTION DEEP- DRAWING PRESS DIE DESIGN

郭煌君(HUANG-CHUN KUO)

指導教授 ： 李碩仁

元智大學/工程學院/機械工程學系/碩士(1992年)

摘要

本文利用Nexpert Object[49]套裝軟體，發展單工程圓筒狀一次引伸成形
的模具設計專家系統(Expert System-ES)。從模具的模仁設計，製程的條
件規劃，至模具尺寸出圖的過程，在Nexpert Object的環境下，結合了
dBASE Ⅲ Plus、AutoCAD與 AutoLisp 等各軟體的優點，輔助一般專家系
統在資料處理及繪圖上所不足的功能，完成本系統。本文的研究重點如下
︰一．將引伸模模具設計過程中，所牽涉的各種查表、設計經驗等各種資
料，與予分類，建立輸入專家系統知識庫的方式。二．將工作站 (W/S)
ABAQUS 軟體所模擬深引伸一次成形的資料，放入系統中，作為設計時的
參考，並配合現場工程師的經驗，以期減少模具設計在試誤期間( Trial
& Error )所浪費的時間和材料成本。三．以物件式知識表示法(Object-
based Knowledge Represen- tation)，將表格式的資料納入專家系統中
，大量減少知識庫的負載。四．在AutoCAD的環境下，發展參數式自動繪
圖AutoLisp程式，抓取由專家系統所推論出的模具各零組件相關尺寸資料
，自動繪製模具尺寸圖，減少人工繪圖的時間，提高模具設計效率。

關鍵字

專家系統 ； 深引伸 ； 參數式繪圖

並列摘要

This article describes the applications of expert system in the
single-action deep-drawing press die design which include the
die design, process planning and the output of engineering
drawings. The rule-based and object-based expert system
development tool "Nexpert Object" provides the framework for
this development. The dBASEⅢ Plus was utilized to enhance the
system in database management. The AutoCAD was used to support
the automatic drawing function. Key aspects of this research
are as follows: 1. Classification of the knowledge about the
deep-drawing die design processes and building of the knowledge
input-models acquired from industrial experts , industrial
brochures, handbooks and CAE analysis results. 2. Addition of
the deep-drawing simulation data from CAE(ABAQUS) analysis into
the system to assis die-design engineers . This is to reduce
the time and cost wasted during the trial-and- error
processes. 3. Usage of the object-based approach to represent
the knowledge base in table style, and to reduce the load of
knowledge base of expert system. The number of rules can be
reduced greatly. One rule is sufficient to represent a set of
table data. 4. Development of a parametric drawing capability
for auto- drawing in the AutoCAD environmemt. Engineering
drawings can be automatically drawn by the AutoLISP programs
according to the parameters derived from the expert system. The
benifit is the improvement of the drwaing efficiency by
reducing the time and cost of manual drawing.

並列關鍵字

EXPERT SYSTEM ； DEEP DRAWING ； PARAMETRIC DRAWING