A NC programming method for key components of marine diesel engines

Abstract

The invention discloses a numerical control procedure programming method for key parts of a marine diesel engine in the fields of numerical control processing and digital manufacturing. The numericalcontrol procedure programming method comprises the following steps: firstly, defining manufacturing features of the key parts, constructing a manufacturing feature information model and creating a predefined feature library and a numerical control processing technology library; extracting processing operation information, correlating the processing operation information with the manufacturing features in the predefined feature library and then introducing an entity model and process data to form all procedure models; traversing the manufacturing features in the procedure models, identifying similar features from the predefined feature library, obtaining numerical control processing technology information corresponding to characteristics and reusing according to identified characteristics and a correlation mapping relationship between the characteristics and the processing operation information; and finally, adjusting tool path parameters by combining with the numerical control processing technology information and generating a final tool path and codes. According to the numerical control procedure programming method for the key parts of the marine diesel engine, disclosed by the invention, the manufacturing characteristics at the processing stage are identified and matched, the compilation of numerical control programs can be quickly completed and the quality and the efficiencyof numerical control programming are improved.

Description

technical field [0001] The invention relates to the field of numerical control machining and digital manufacturing, in particular to a fast numerical control programming method for key parts of a marine diesel engine based on manufacturing characteristics. Background technique [0002] The marine diesel engine is an important power of the ship, and its key parts include connecting rods, racks, machine bases, cylinder blocks and so on. For most of the key parts, the structure is complex, the processing surface is various, and the processing process is cumbersome. [0003] NC programming is the basis of NC machining, and the quality and efficiency of NC machining programs are important factors that determine the quality and efficiency of diesel engine machining. At present, the effective utilization rate of CNC machine tools is low, mainly due to the low efficiency and unstable quality of CNC programming. At the same time, in the process of NC programming for diesel engines,...

AI Technical Summary

Problems solved by technology

At present, the effective utilization rate of CNC machine tools is low, mainly due to the low efficiency and unstable quality of CNC programming.

At the same time, in the process of NC programming for diesel engines, a large number of complex human-computer interactions are required to obtain geometric information such as points, lines, surfaces, and process information of the geometric model required for NC programming, and the degree of automation and programming speed are low.

[0004] Although feature technology has been widely used in the field of digital design and manufacturing, there is no unified and complete definition and expression of manufacturing features for the marine diesel engine manufacturing industry, which makes it impossible to apply feature technology to complex parts in terms of product expression and methods. Well used in marine diesel engine manufacturing industry

Therefore, NC programming technology is still in the status quo of low efficiency and unstable quality in the entire marine diesel engine manufacturing industry, and the application of feature technology in marine diesel engine manufacturing is not widespread.

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