针对二维加工工艺不能满足数字化生产需求的现状，以机床运动仿真技术为桥梁、MBD(Model Based Definition)技术思想为基础，研究了加工工艺在三维环境下的表达模式，提出在三维环境下加工工艺生成系统体系结构，构建了基于机床运动仿真的三维加工工艺生成系统。首先将MBD模型作为工艺信息的载体，研究MBD工艺模型的建模方法及其在系统中的使用；在分析工艺信息数据类型和特点的基础上，基于机床运动仿真过程研究了遍历循环算法对仿真过程中工艺信息的提取、保存技术，实现了对经过仿真验证的工艺信息进行储存，为三维加工工艺生成系统提供数据来源；构建了包含产品信息、工艺信息、设备信息在内的零件三维加工工艺信息数据库，设计了加工工艺结构树，利用工艺信息的层次关系将工艺结构树与数据库信息相映射，实现了对三维加工工艺信息的检索、组织、表达等管理功能；基于Visual Studio2017软件平台和机床运动仿真系统，使用C#语言开发了三维加工工艺原型系统，系统主要由工艺信息数据库、工艺信息数据管理模块、工艺信息关联模块、MBD模型视图管理模块、用户管理模块等部分组成，并以某防爆盖板的三维加工工艺生成为实例对系统进行了验证，结果表明系统在获得原始的工艺数据后，可以在不依赖大型三维软件的条件下，实现包含三维工艺信息的加工工艺表达。

In view of the current situation that two-dimensional machining process can not meet the needs of digital production, based on the bridge of machine tool motion simulation technology and the technical idea of MBD (model based definition), the expression mode of machining process in three-dimensional environment is studied, the architecture of machining process generation system in three-dimensional environment is proposed, and a three-dimensional machining process generation system based on machine tool motion simulation is constructed.Firstly, taking MBD model as the carrier of process information, the modeling method of MBD process model and its application in the system are studied; On the basis of analyzing the data types and characteristics of process information, based on the process of machine tool motion simulation, the extraction and storage technology of process information in the simulation process by traversal cycle algorithm is studied, which realizes the storage of process information verified by simulation and provides data source for 3D machining process generation system; The three-dimensional machining process information database of parts including product information, process information and equipment information is constructed, and the machining process structure tree is designed. The hierarchical relationship of process information is used to map the process structure tree with the database information, so as to realize the management functions of retrieval, organization and expression of three-dimensional machining process information; Based on Visual Studio 2017 software platform and machine tool motion simulation system, a 3D machining process prototype system is developed using c# language. The system is mainly composed of process information database, process information data management module, process information association module, MBD model view management module, user management module, etc, The results show that after obtaining the original process data, the system can realize the processing process expression containing three-dimensional process information without relying on large-scale three-dimensional software.

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