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PROCESS CAPABILITY TO GUIDE TOLERANCING IN MANUFACTURING SYSTEMS

机译:指导制造系统中补习的过程能力

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摘要

In this paper we develop a strategy for setting process limits on operations within a system to guarantee that the final product meets target specifications. We first present methods for analyzing variation propagation in systems to predict end-of-line variation. Variation for the end-of-line quality characteristics is determined by a sequence of mappings representing how variations into each operation result in variations on the work in progress. The largest input tolerances that still meet the required output tolerances are calculated for each operation. The approach is demonstrated with a model of the manufacturing process for MIG welded automotive structure, where we establish required tolerances at weld fixture locations to ensure final frame distortion is within acceptable limits.
机译:在本文中,我们开发了一种策略,用于设置系统中操作的过程限制,以确保最终产品符合目标规格。我们首先介绍用于分析系统中的变量传播以预测行尾变量的方法。终端质量特性的变化由一系列映射确定,这些映射表示每个操作的变化如何导致进行中的工作的变化。为每个操作计算仍满足要求的输出公差的最大输入公差。 MIG焊接汽车结构的制造过程模型证明了该方法,在该模型中,我们在焊接夹具位置确定了所需的公差,以确保最终框架变形在可接受的范围内。

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