توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A computer aided Nesting and Piloting system for progressive dies
نویسنده(ها): ،
اطلاعات انتشار: اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۱۱
Nowadays sheet metal products are one of the most frequently found parts in industry. Progressive dies have a special role in various methods of sheet metal production. The design process however, needs a considerable amount of time and expertise. Two important activities during a progressive die design are "Nesting" and "Piloting". In this paper a software which automates the nesting of different parts according to minimum scrap strategy is introduced. The software is also capable of choosing the most suitable existing holes or designing auxiliary holes on the scrap part of the strip for piloting purposes.<\div>

۲A Real–time NURBS Curve Trajectory Generator for High–Speed CNC Machining
نویسنده(ها): ،
اطلاعات انتشار: اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۱۱
The impossibility of exact arc length computation for NURBS curves makes it difficult to generate a trajectory with desired profiles in real–time. This paper presents a new trajectory generation method that estimates an admissible path increment and determines the initiation of the final deceleration stage according to the distance left to travel estimated at every sampling time, resulting in exact feedrate trajectory generation through jerk–limited acceleration profiles for the NURBS curves. The proposed approach allows the feedrate profile to be dynamically adjusted according to chord error which is a geometrical path constraint for the curved path.<\div>
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