Development of a Simulator for the Formation of a Smooth Profile for a Compressor Blade Blank
Abstract
The reduction of technological preparation of the blank production time (TPBPT) at the enterprises of the aerospace industry, and the improvement of the quality of products require the search for new solutions related to the automation of production. The design of complex-shaped parts, such as compressor blades (CB) of gas turbine engines (GTE), is highly labor intensive. Computer-aided design systems minimize the possibility of errors that occur in manual design, but require high-quality technologists. Educational-methodical and program training of future specialists implies the formation of practical skills and abilities, which is achieved by the use of various training devices that simulate real technological processes. The solution of the main task of TPBPT CB ‒ obtaining a smooth profile of the airfoil of the compressor blade billet ‒ is possible with the availability of appropriate software (SW) and algorithms. The article considers the issue of development of a simulator unit for technologists of forging and stamping production CB using CAD ‒ AutoCAD. The use of the basic properties of cubic smoothing splines for obtaining the mathematical model (MM) of the blank will not only solve the main problem of the TPBPT CB, but also allows us to develop a program of model formation in the CAD. The algorithm for smoothing the surface with cubic interpolation splines makes it possible to obtain a stamped forging model with a smooth surface and a uniform allowance for the blade in the zone of the greatest wear of the dies, which significantly increases their durability. The operation of the simulator is based on the algorithm for the formation of a smooth profile of the blade of the CB blank.
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