Kinematic Analysis of Dimensional Variation Propagation for Multistage Machining Processes With General Fixture Layouts
Kinematic Analysis of Dimensional Variation Propagation for Multistage Machining Processes With General Fixture Layouts
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DOI：
10.1109/tase.2006.877393
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发表时间：
2007-04
影响因子：
5.6
通讯作者：
J. Loose;Shiyu Zhou;D. Ceglarek
中科院分区：
文献类型：
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作者：
J. Loose;Shiyu Zhou;D. Ceglarek
近年来，复杂多阶段制造过程中的变异传播建模引起了广泛的关注。本文通过对夹具误差、基准误差、机床几何误差和产品尺寸质量之间关系的运动学分析，建立了描述加工过程尺寸误差传播的线性模型。开发的建模技术可以处理一般夹具布局，而不是局限于3-2-1布局的情况下。该模型定量地描述了尺寸误差在多阶段加工过程中的累积和转化。一个系统的程序来建立模型，并验证。该模型在复杂加工过程的故障诊断和工艺设计评价中具有很大的应用潜力。从业人员注意事项-为了在制造业中获得竞争优势，减少变异对提高过程效率和产品质量至关重要。不幸的是，变化减少提出了困难的挑战，特别是对于大规模的现代制造过程。由于产品日益复杂，现代制造过程通常涉及多个工位或操作。例如，在加工过程中通常需要多个设置和操作来完成最终产品。当工件经过多个加工阶段时，每一阶段的加工误差都会累积到工件上，进而影响后续的加工。变异的积累和传播对最终产品的变异分析和减少提出了重大挑战。本文着重于一个系统的技术建模的尺寸变化传播的多级加工过程。通过运动学分析，建立了典型工艺故障与产品质量特性之间的关系。所提出的技术的一个显着特点是，不同的操作与一般夹具布局之间的相互作用被系统地捕获通过设置错误的建模。该模型在复杂加工过程的故障诊断和工艺设计评价中具有很大的应用潜力
Recently, the modeling of variation propagation in complex multistage manufacturing processes has drawn significant attention. In this paper, a linear model is developed to describe the dimensional variation propagation of machining processes through kinematic analysis of the relationships among fixture error, datum error, machine geometric error, and the dimensional quality of the product. The developed modeling technique can handle general fixture layouts rather than being limited to a 3-2-1 layout case. The dimensional error accumulation and transformation within the multistage process are quantitatively described in this model. A systematic procedure to build the model is presented and validated. This model has great potential to be applied toward fault diagnosis and process design evaluation for complex machining processes. Note to Practitioners-Variation reduction is essential to improve process efficiency and product quality in order to gain a competitive advantage in manufacturing. Unfortunately, variation reduction presents difficult challenges, particularly for large-scale modern manufacturing processes. Due to the increasing complexity of products, modern manufacturing processes often involve multiple stations or operations. For example, multiple setups and operations are often needed in machining processes to finish the final product. When the workpiece passes through multiple stages, machining errors at each stage will be accumulated onto the workpiece and could further influence the subsequent operations. The variation accumulation and propagation pose significant challenges to final product variation analysis and reduction. This paper focuses on a systematic technique for the modeling of dimensional variation propagation in multistage machining processes. The relationship between typical process faults and product quality characteristics are established through a kinematics analysis. One salient feature of the proposed technique is that the interactions among different operations with general fixture layouts are captured systematically through the modeling of setup errors. This model has great potential to be applied to fault diagnosis and process design evaluation for a complex machining process