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基于CMA转向器壳体双工位数控卧式深孔钻专机的夹具及活动模架结构设计 被引量:1
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作者 施兆春 刘松茂 《自动化应用》 2021年第2期50-52,共3页
根据客户提供的CMA转向器壳体钻孔工序图及相关技术要求,设计制造了一台双工位数控卧式深孔钻专机,加工孔径ϕ29mm,孔深520mm,保证同轴度ϕ0.2。专机生产节拍≤40s/件(含装夹时间10s)。机床夹具及活动模架是深孔钻机床关键部件,两个部件... 根据客户提供的CMA转向器壳体钻孔工序图及相关技术要求,设计制造了一台双工位数控卧式深孔钻专机,加工孔径ϕ29mm,孔深520mm,保证同轴度ϕ0.2。专机生产节拍≤40s/件(含装夹时间10s)。机床夹具及活动模架是深孔钻机床关键部件,两个部件的结构设计,与结构相关尺寸分析计算对设计同类机床具有一定参考作用。 展开更多
关键词 CMA转向器壳体钻孔工序专机 夹具 活动模架 尺寸计算
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Reverse Engineering Activity Diagrams from Object Oriented Code: An MDA-Based Approach
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作者 Liliana Martinez Claudia Pereira Liliana Favre 《Computer Technology and Application》 2011年第12期969-978,共10页
The success of system modernization depends on the existence of technical frameworks for information integration and tool interoperation like the Model Driven Architecture (MDA). Reverse engineering techniques play ... The success of system modernization depends on the existence of technical frameworks for information integration and tool interoperation like the Model Driven Architecture (MDA). Reverse engineering techniques play a crucial role in system modernization. This paper describes how to reverse engineering activity diagrams from object oriented code in the MDA context focusing on transformations at model and metamodel levels. A framework to reverse engineering MDA models from object oriented code that distinguishes three different abstraction levels linked to models, metamodels and formal specifications, is described. At model level, transformations are based on static and dynamic analysis. At metamodel level, transformations are specified as 0CL (Object Constraint Language) contracts between M0F (Meta Object Facility) metamodels which control the consistency of these transformations. The level of formal specification includes algebraic specifications of MOF metamodels and metamodel-based transformations. This paper analyzes a recovery process of activity diagrams from Java code by applying static and dynamic analysis and shows a formalization of this process in terms of MOF metamodels. The authors validate their approach by using Eclipse Modeling Framework, Ecore metamodels and ATL (Atlas Transformation Language). 展开更多
关键词 METAMODELING meta model facility reverse engineering model driven architecture transformation.
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