基于MBD的船用柴油机装配信息定义技术研究

发布时间：2018-10-13 07:57

【摘要】：船用柴油机是典型的复杂产品,具有体积大、结构复杂、零部件多等特点,与传统产品装配相比具有装配精度高、装配过程以手工作业为主的特点,其装配过程在整个制造过程占据了很大的比重。目前,国内船用柴油机装配工艺设计普遍采用二维设计制造模式,其信息传递依赖二维图样进行,现场工人需要大量时间来理解图纸上的信息,带来返工率高、生产效率低下的问题。因此,进行基于MBD的船用柴油机装配信息定义技术研究对改变我国船用柴油机研制模式具有促进作用,同时也支撑现代制造技术的发展。主要的研究内容与成果如下:(1)根据装配模型在装配不同阶段信息表达需求的问题,采用全新的信息定义方法,将船用柴油机装配模型分为工程MBD模型和工艺MBD模型。分析了装配MBD数据集以及在不同制造阶段下的功能,并对其信息内容进行分类组织,改变当前设计过程信息传递的模式,提高三维装配工艺设计的效率,同时对改进现有设计制造模式具有重要促进作用。(2)针对现阶段船用柴油机装配MBD数据集定义缺少三维数字化定义应用规范的问题,建立MBD技术应用框架,并在充分理解现有MBD技术标准的基础上,结合船用柴油机装配信息定义的实际需求,建立指导该类产品制造的MBD技术应用规范体系。(3)针对船用柴油机三维装配工艺设计的信息组织需求,研究了装配工艺信息模型的对象化建模。根据产品三维可视化装配工艺设计,在集成环境下构建产品的装配工艺设计功能模型,并对其蕴含的信息要素进行了详细分析;根据现场可视化要求,构建以MBD技术为工艺信息载体的信息表达机制。(4)在理论分析的基础上,根据船用柴油机装配工艺设计过程中信息定义的实际需求,开发了一套装配信息数字化定义系统。该系统在三维装配工艺规划与仿真平台下运行,以某型柴油柴油机缸盖部件的装配工艺设计为例,对装配信息定义系统验证了其实用性以及可靠性,为以后该类产品的三维设计制造模式奠定了基础,也为MBD技术的应用做了有益的探索。
[Abstract]:Marine diesel engine is a typical complex product, which has the characteristics of large volume, complex structure, many parts and so on. Compared with the traditional product assembly, the marine diesel engine has the characteristics of high assembly precision and manual operation in the assembly process. The assembly process occupies a large proportion in the whole manufacturing process. At present, the domestic marine diesel engine assembly process design generally adopts the two-dimensional design and manufacture mode, its information transmission depends on the two-dimensional pattern, the field workers need a lot of time to understand the information on the drawings, resulting in a high rate of rework. The problem of inefficient production. Therefore, the research of marine diesel engine assembly information definition technology based on MBD can promote the development of marine diesel engine in China and support the development of modern manufacturing technology. The main research contents and results are as follows: (1) according to the problem of information expression of assembly model in different stages of assembly, the assembly model of marine diesel engine is divided into engineering MBD model and process MBD model by using a new information definition method. The assembly MBD data set and its functions in different manufacturing stages are analyzed, and its information content is classified and organized to change the mode of information transmission in the current design process and improve the efficiency of 3D assembly process planning. At the same time, it plays an important role in improving the existing design and manufacturing mode. (2) aiming at the problem that the definition of marine diesel engine assembly MBD data set lacks the application specification of 3D digital definition at present, the application frame of MBD technology is established. On the basis of fully understanding the existing MBD technical standards, combined with the actual requirements of marine diesel engine assembly information definition, The application specification system of MBD technology is established to guide the manufacture of this kind of products. (3) the object modeling of assembly process information model is studied according to the information organization requirement of 3D assembly process design of marine diesel engine. According to the product 3D visual assembly process planning, the functional model of product assembly process planning is constructed under the integrated environment, and the information elements contained therein are analyzed in detail. The information expression mechanism based on MBD technology is constructed. (4) based on the theoretical analysis, a digital definition system of assembly information is developed according to the actual requirement of information definition in the process of marine diesel engine assembly process design. The system runs on the platform of 3D assembly process planning and simulation. Taking the assembly process design of cylinder head parts of a diesel engine as an example, the practicability and reliability of the assembly information definition system are verified. It lays a foundation for the 3D design and manufacture mode of this kind of products, and also makes a beneficial exploration for the application of MBD technology.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U664.121;TG95

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