Process Design Based MBD Technology Aircraft Parts Through Three-dimensional Machining

A new type of aviation complex integral structure parts is different from the traditional simple mechanical parts, with X through a whole new class of aerospace structural components as a representative, complex structure, characterized by multi-processing, high precision, large CNC machining difficult; many kinds of parts, modifications and more, large CNC program preparation tasks, duplication, low efficiency of programming. Therefore, it is imperative to change from the traditional two-dimensional design and manufacture to the full three-dimensional digital design and manufacture.Currently, MBD technology is currently used in the design phase has matured, in order to make it widely used in the process of expression, this paper presents a three-dimensional model as MBD step machining process information carrier. In step three-dimensional model as the core, DELMIA technology as a design platform based Machining process Machining process planning module of the design process, the establishment of PPR process information model. Finally, in the three-way parts, for example, three-dimensional machining process design simulation process in detail.The main research work has the following aspects:(1)Analysis of the structural characteristics of X-pass part. Select the tool and measuring tools, cutting parameters to determine the criteria, and finally developed a complete process line.(2)Through the establishment of processing model X-type parts, in order to make the process according to the processing path production model, incremental modeling. Use UG manufacturing environment, the establishment of an X through the rough parts Parts model, set the type of machining and cutting parameters and tool path generation. Carried out in the CAM module simulation process, verify the path to develop technology, and to save the tool path files. Finally, the tool path file post-treatment can generate CNC machine identification file, NC programming.(3)The concept of MBD and data sets are described in detail, the establishment of a three-way design MBD model parts based MBD technology, all the callouts are attached to the geometry. Introduced the concept model of the process, contact between each step of the model, and how the three-dimensional model of the step formed in IPM(In-Process Model) Additional MBD datasets. Process information model based on the design MBD model and processes MBD model as the core of an integrated model of three-dimensional visualization technology of expression, including the model layer, process layer and resource layer, also referred to as the PPR process information model, including process planning all process information. That is called a three-dimensional model of process information, to include the information machined parts full life cycle. In actual production, to save all the data is unique.(4)Introduces capable 3D process planning to develop a platform DELMIA software systems DPM digital manufacturing technology platform, in this design environment for three-dimensional visualization technology tee parts instantiated operational verification and found that all process information fully three-dimensional in a under the integrated environment complete without two-dimensional drawings. With conventional two-dimensional process card compared to 3D process can be very intuitive to see the relationship between each step of the process model is formed, and each process all the machining process information is processed between features.