First of all, the function and advantage of digitized measurement aided assembly technology are expounded, and the analyzed questions and main principles needed for this technology application are explained. Then the application process is analyzed and expatiated. Finally, aimed at the large-scale aircraft fuselage sections assembly, there is an example to show the application of the digited measurement aided assembly technology in it.
The current status, classifi cation and characteristics of aircraft fl exible tooling at abroad are introduced. The application of a kind of fl exible tooling in a product is analyzed.
The application of portable automatic drilling machine could reduce the cost of aircraft assembly and enhance the automatic assembly level. A kind of flexible track automatic drilling machine for automatic assembly is introduced. The application, workflow and software/hardware of the machine are illustrated. The function, structure, software interface and key control programming technology are discussed in detail.
By analyzing the factors influencing the holes quality, hand-drilling defect factors are summarised, and the importance of automatic percision drilling is pointed out. Percision drilling process and advance hole quality process are discussed, and some advanced percision drilling equipments from abroad are specialized.
The value of assembly simulation is introduced, and the difference and connection of assembly simulation and digital pre-assemble are analyzed. Combined with actual statement of assembly simulation, the key technologies and solutions associated with assembly simulation during concurred design stage are discussed in detail. And suggests and prospect for application is brought out according to the defect of assembly simulation.
In the period of aircraft development, the virtual assembly simulation software is used to design and simulate assembly process of three-dimensional product modular, which can help to eliminate physical prototype assembly and processes involved in the physical prototype equipment manufacturing, to improve modeling quality of product and tooling, to reduce product development costs and to shorten development cycle of product.
In order to obtain the deformation of a bracket beam along with different rotational angle, the finite element technology based on ANSYS is applied to the linear static analysis. The deformation formulas of beam is constructed by using Lagrange Interpolation Polynomials according to the analysis result. The shape function of the timer is adjusted.
Flexible multi-point die is more excellent than traditional method for skin stretch forming. The origin and current status of fl exible multi-point die are introduced, and the generation system is expounded with an emphasis. The system needs to generate the adjusted data for the multi-point die stretch, which is the important link between the preceding and the following. The realization of key algorithm, technology and function of profile generation system is discussed by using CATIA secondary development tool CAA.
With the development of the variety of aircraft and the change of customer’s requirement, the conventional “hard” aircraft assembly techniques cannot suit to the requirement of new aircraft development and manufacture in variety and little batch. The proper fl exible assembly technology is applied and adaptable assembly process design is carried out to reduce the aircraft development cost greatly and expedite aircraft development which suit to the development of more variety and multimode of aircraft.
The technology of simulation which pre-check the clash caused by the complex operational framework, can optimize the process of riveting, reduce the prepared time and save the assembly cost. Based on the analysis of key simulation technology and the CAA development skills of CATIA, the simulation system of automatic drilling and riveting is built up, which achieves checking the clash during the process of riveting.
The application of multi-robot coordination in a merging system for posture alignment of huge and heavy parts is studied. The trajectory planning method of posture aligning and merging system for large parts with multiple 3-DOF robots is proposed. The coordinates transformation relationship between merging part and single robot is established on the basis of large parts merging technology. By using the redundancy of multirobot coordinated manipulation system and considering the constraints of payload, driving force and driving velocity, the trajectory planning strategy of robot in posture aligning and merging system for large parts is achieved on the basis of kinematic model and inverse kinematic algorithm.
Aimed at the abuses of main transmission, such as long transmission chain, low efficiency, much heat generation, high noise and so on, the optimized design is carried out, which solves the problems completely and improves the general performance of the machine tool.
Automatic contact and non-contact ool measuring system confi gured in NC machine tool are introduced in this article. Parameterized control and intelligent human-machine interface control are investigated, which makes contribution to the developing of NC machine tool.
The effection and category of NC machining simulation software are analyzed and summed up. The typical work flow of NC program verifying, the development trendence of NC machining simulation software are discussed, and an example of the important effection of the NC machining simulation verify software used in NC machining for large aircraft structure part is analyzed.
Through abstracting interrelations and internal structures from multi-kinds of manufacturing resources, the process of building universal manufacturing resources objects structural model is demonstrated. The mixed management platform on multi-kinds of manufacturing resources is implemented.
The data management system of cutting parameters process is constructed according to the problems of cutting parameters management in domestic aviation manufacturing industry. The architecture of cutting parameters management system is demonstrated. Besides, the function design of the system is introduced, especially the milling parameters part.
