1 Product Features divided into groups based on the formation of specialized Lean Production Line
Currently, large-scale development in the aviation parts often face greater passive situation, can not form the core competitiveness has great technical advantages, the fundamental reason lies in the relative backwardness of the original production of resource allocation and layout has been unable to meet the current development needs, particularly at the national large aircraft project started giving us great opportunities as well as the existing production capacity and manufacturing technology sounded the alarm.
First, part family to establish the concept of application of group technology to build a typical family of parts. Secondly, in the establishment of a typical family of parts, based on the classification of typical part family to establish a standardized process.
Finally, a typical family of parts in the standardization process, based on the formation of specialized, integrated manufacturing resource allocation and layout, and ultimately the formation of various types of typical aerospace components lean production line. Especially for large-scale structure, the establishment of specialized production units typical part of its processing technology to improve the level of cost reduction is particularly important.

2 to clamping fast as the goal, the formation of highly efficient and reliable clamping technology
CNC equipment for high-speed machining, the correct design of jigs, fixtures shorten production preparation period, the parts on the CNC machine fast clamping positioning is very important, can greatly increase the effective cutting time scale, quality assurance process, so as to improve CNC machining The ultimate goal of efficiency. In the traditional specific folder, using mechanical positioning, manual clamping and removal usually spend a lot of time and manpower, and high-speed machining of large parts, the use of semi-automated or fully automated clamping technology is very economically valuable, hydraulic positioning and Clamping very effective.
The main advantage of the hydraulic clamp save workpiece clamping and loose unloading spent a lot of time, relevant statistics show mechanical clamping hydraulic clamping savings compared to about 90% of the time, reducing the production cycle time, reduce costs. Another significant advantage is that the positioning and clamping force remains constant during clamping to ensure that the processing procedure of the same quality and consistency.
Flexible fixture system is a new alternative to traditional fixture clamping system. Currently advanced flexible fixture system is adaptive capability for automated adjustment of product changes to adapt to large changes in the product case

3 From the conventional cutting speed cutting transition to the progressive realization of high-speed processing without human intervention
Performance requirements of modern aircraft structure has its lighter, thinner, and the whole of the characteristics of parts required to achieve high accuracy and surface quality, the traditional low-speed processing methods has been difficult to meet the modern needs of aerospace manufacturers. That a large number of model development applications, high-speed machining technology has a great advantage, not only greatly improve the processing efficiency, the machining quality has also been improved.
Currently in the domestic and foreign high-speed machining applications, there is a big gap, mainly in
20000r/min ~ 40000r/min a small number of large-scale high-speed milling equipment, lack of equipment, lack of technical experience, severely restricted the level of overall domestic CNC technology, the future regardless of the hardware environment of the building, or the application of technology research aspects need to invest a lot of energy.
4 implementation of information management tool and resource optimization
With the increasing amount of products the task, the device increases, the demand for mechanical machining tool is also growing, more and more varieties. For a long time, tool management mode is mainly artificial management, tool management system is not perfect, tool coffers are not standardized, centralized configuration of the tool is imperfect, seriously affecting the tool management level, an increase of CNC machining preparation time, restricted CNC machining efficiency and to further improve the processing capacity. With CNC machining and tool technology rapid development, the challenges facing the efficient production and reduce manufacturing costs continue to pressure management tool manufacturing enterprises increasingly become the focus of attention.
Build automation, information management tool storage environment is the solution to the current application management tool backward, inefficient status quo and effective way. Can be implanted chip lifecycle management tool, which a reasonable application of the tool resources. 5 deepen simulation technology applied research, and promote the establishment of digital manufacturing system
With the development of computer technology, CNC machining simulation technology has been rapid development, especially in aviation, aerospace, defense and other large-scale complex systems research and development process, the NC machining simulation in reducing losses, save money and shorten the development cycle , improve product quality, and played a significant role.
Based on VERICUT CNC machining simulation software build environment to achieve virtual manufacturing of CNC programming, cutter location file than the more realistic simulation, intuitive, greatly improve the efficiency and quality of CNC programming. Figure 4 shows the complex five-axis machining center rib parts of the simulation schematic.
Simulation Machining CNC machining technology has become an essential part of the development process. Especially for large, complex aircraft structural parts, its material is expensive, complex structure, extensive use of high-speed cutting, related equipment is extremely expensive. Ensure processing toolpath cutting parameters correctness, rationality, to eliminate excessive margin cutting, Collision, overtravel and other unexpected error is essential. Therefore, the establishment of accurate and complete simulation of the processing environment is necessary.

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