英语翻译AbstractNowadays,progressive dies have a special role in various methods of sheet metal production.The design process,however requires a considerable amount of time and expertise.During the last three decades,different concepts of Compute

英语翻译AbstractNowadays,progressive dies have a special role in various methods of sheet metal production.The design process,however requires a considerable amount of time and expertise.During the last three decades,different concepts of Compute
英语翻译
Abstract
Nowadays,progressive dies have a special role in various methods of sheet metal production.The design process,however requires a considerable amount of time and expertise.During the last three decades,different concepts of Computer Aided Progressive Die Design (CAPDD) have been studied all around the world.CAPDD involves various activities and among them piloting has been paid the least attention by researchers.In this paper,a mathematical model based on Medial Axis Transform (MAT) is introduced.This model is applicable to parts without suitable circular holes for direct piloting.The model analyzes the part geometry in order to find the best position for semi-direct and indirect pilots.It also optimizes the piloting system using minimum scrap strategy.A prototype software is also developed to automatically design auxiliary holes on the scrap part of the strip for piloting purposes.The input to the software is nesting template of the workpiece,which is composed of line and arc segments,and the output is the piloting system.The model is demonstrated through several industrial examples.

英语翻译AbstractNowadays,progressive dies have a special role in various methods of sheet metal production.The design process,however requires a considerable amount of time and expertise.During the last three decades,different concepts of Compute
目前,模具在金属板材生产的各种方法的特殊作用.设计过程中,但需要大量的时间和专业知识.在过去的三年,辅助级进模设计不同的概念计算机（C AP DD）进行了全世界.CA PD D涉及各种活动,其中试点已受到研究学者的重视.在本文中,基于数学模型的中轴变换（MAT）介绍.该模型适用于部分不适合直接驾驶循环孔.该模型分析了零件的几何形状为半直接和间接的飞行员找到最佳位置.它也优化了导航系统使用最少废料的策略.一个原型软件开发的自动设计辅助孔上的带材的废料部分驾驶的目的.该软件的输入是W O R K P I E C E嵌套模板,它是由直线和圆弧段,和输出的导航系统.该模型通过几个工业的例子证明.