Identification method of machining characteristics of complex parts of airplane

Abstract

The invention provides an identification method of the machining characteristics of complex parts of an airplane, which comprises steps of: firstly, setting a machining coordinate system, identifying a machining surface and preprocessing a hole to complete basic information process; secondly, layering and intersecting to obtain intersecting line rings in each layer of intersecting result and relationships among the intersecting line rings to complete the construction of outline rings of generalized grooves; building the generalized grooves according to the outlines of the generalized grooves and the source surface depended by the intersecting lines; building the characteristics relevance tree of the generalized grooves according to the lengthways relationship of the outlines of the generalized grooves; and emerging the generalized grooves and identifying the characteristics types to complete the identification of the machining characteristics of a whole part. The method has the characteristics of high identification accuracy rate, high speed and small space usage, and the like; can be used for designing and developing systems for programming the complex parts of the airplane by means of intelligent numerical control, analyzing a machining technical scheme, and automatically generating blanks, and the like; and has good application foreground.

Description

technical field [0001] The invention relates to a method for recognizing processing features of aircraft complex components. This method can be used to identify and construct the overall processing features of the digital 3D model of aircraft structural parts, thereby extracting specific processing feature information, which can be used in the design of intelligent NC machining programming of parts, analysis of processing technology schemes, and automatic generation of blanks. and development, belonging to the field of aircraft digital advanced manufacturing technology. Background technique [0002] With the development of NC programming technology, CAM (Computer Aided Manufacturing) system has a strong ability to process complex geometry, but relying solely on the experience of craftsmen to specify the processing area and set processing parameters in an interactive way is not enough to meet the actual needs. Automatically generating NC machining programs for parts is an in...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned existing technical problems, the present invention provides a processing feature recognition method for aircraft complex components. Key issues such as acquisition, tool selection, and tool path calculation are of great significance to the development of intelligent NC machining programming, machining process plan analysis, and automatic blank generation based on feature recognition.

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