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The primary objective for modeling of machining processes is to develop a predictive capability of machining performance in order to facilitate effective planning of machining operations. This capability leads to faster implementation, higher performance, quality at a lower cost. This comes about due to improved selection of machining parameters, optimal fixture design and the avoidance of tool failure. The simulation system presented simultaneously considers the effect of cutter geometry, the cutter's initial position errors, workpiece geometry, machine tool dynamics, and workpiece/fixture system dynamics on the machining process.The integration of all of the above in one model provides an off-line tool to simulate and optimize the machining parameters and the fixture configuration cutting both lead and production time. The modular nature of the simulation system presented allows for the study of many different machining processes. The cutting forces in this system are modeled using a mechanistic approach. NURBS curves and surfaces are utilized for the geometric modeling and simulation of the machining process. While a finite element method is used to model and analyze the workpiece/fixture dynamics. Two case studies are presented to demonstrate the practical application of the presented simulation. The first case presents the optimization of the fixture configuration of a generic automotive component. While the second case presents the results of simulations performed on a novel mill/grind machining process. This process is a combination of face milling and grinding in one operation. Some simulated results are presented along with experimental validation. 相似文献
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任宏涛 《洛阳工业高等专科学校学报》2004,14(1):19-20
介绍了基于约束的夹具三维设计方法，提高夹具设计效率，提高夹具设计精度．基于约束的夹具三维设计的核心是基于约束的几何建模，即通过几何约束系统来定义物体，通过解约束条件来自动构造物体，在修改设计的过程中可以保持装配关系，与以前的计算机辅助夹具设计系统相比具有很强的实用性。 相似文献
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孙波 《鞍山师范学院学报》2004,6(2):33-35
按加工误差的性质,提出了夹具综合误差计算的单变量误差计算法,并对具体问题进行了分析计算.为分析计算各种误差提供了一种可行途径. 相似文献
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简要介绍了附加桥壳加工夹具的设计,并利用CATIA三维建模软件进行模拟与仿真操作,使工件在夹具上一次装夹,便完成桥壳所有尺寸的加工。 相似文献
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结合本校机电专业毕业设计,介绍了三维CAD软件Solidworks在机制工艺类毕业设计中的几个应用,阐述了现阶段三维设计对提高毕业设计水平和培养学生创新能力的作用。 相似文献
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文章通过参考有关发动机装配夹具的结构,在了解了发动机及变速器（主要为自动变速器）的基本结构、原理的情况下,对汽车发动机装配夹具进行了结构设计并校核了其强度。此夹具适用于不同车型的各种型号发动机,通过摇柄可使发动机旋转任意角度并锁紧。具有结构简单、操作方便、成本低等特点。 相似文献
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夏宝林 《四川职业技术学院学报》2005,15(3):99-100
根据各种机床夹具的安装方法，分析其产生安装误差的原因，结合引起误差的原因计算各种安装方法产生的安装误差． 相似文献
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