Preparation system of quick numerical control machining of complex parts of airplane and method

Abstract

The invention discloses a preparation system of quick numerical control machining of complex parts of an airplane and a method. The system takes the existing CAD / CAM system as a platform, and comprises a technology resource and knowledge base management module, a quick blank generation module, a part classification and technical scheme analysis module, an automatic programming module, a quick tool generation module, a strain analysis and deformation control module, a front and rear process module and a technology data generation module. The system is built on the basis of a three-dimensional numeric part model, systematically and exactly embodies a specialized flow path for supporting the numerical control machining technology preparing and the programming of the complex parts of the airplane, can greatly reduce man-machine interaction operation required by preparing technology and programming, effectively solves the problems of the unstable programmed procedure and the unreasonable scheme design of the machining technology caused by the lack of the experience of process operators, and the like, can effectively control the deformation quantity during and after machining the parts,can obviously improve the efficiency and the quality of the numerical control machining preparing and the programming, and improves the professional level and the intelligence level of the CAD / CAM system.

Description

technical field [0001] The invention relates to a rapid numerical control machining preparation system and method for aircraft complex components, which is applied to the rapid numerical control machining process preparation and programming of aircraft complex components, thereby realizing efficient and high-quality numerical control machining of aircraft complex components, and belongs to the digital intelligent processing technology of aircraft structural parts field. Background technique [0002] A large number of integral structural parts are used in modern aircraft structures to shorten the processing and assembly cycle and reduce weight to improve aircraft performance. However, the complex components of the aircraft have the characteristics of complex structure, high manufacturing precision requirements, and high processing difficulty. However, there are many problems in the current NC machining process preparation and NC programming: (1) The processing experience and ...

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Problems solved by technology

However, the complex components of the aircraft have the characteristics of complex structure, high manufacturing precision requirements, and high processing difficulty. However, there are many problems in the current NC machining process preparation and NC programming: (1) The processing experience and knowledge have not been regularized and unified, and the inheritance has not been brought into play. ; (2) Using the existing CAD / CAM system, the blank generation function is simple, which cannot meet the actual processing needs, and the programming interaction is huge and the cycle is long; (3) The processing technology planning largely depends on the personal experience and The level of knowledge is relatively random, resulting in unstable program quality; (4) The structural parts are easily deformed during the CNC machining process, which affects the machining quality and machining accuracy of the parts; Instability; (6) The post-processing program cannot complete the code conversion between different CNC systems; (7) In particular, there is a lack of a complete set of specialized processes for NC machining process preparation and NC programming on the basis of digital 3D models, resulting in process Scheme planning, NC machining programming, machining deformation analysis, clamping configuration design, clamping scheme, blank generation and other links lack coordination and correlation with each other, which in turn affects the processing efficiency and quality of aircraft structural parts and prolongs the aircraft manufacturing cycle

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