Development of shaping process algorithms at the stage of technological preparation of the production of the aircraft

Abstract

The subject of study in this article is the shaping process algorithms for aircraft (A/C) manufacturing during the technological preparation of production (TPP). The goal is to reduce the terms of the A/C TPP. Objectives: to establish production engineering measures during the TPP and determine their role in reducing the TPP terms; to propose the shaping process algorithms for the A/C manufacturing during the TPP by solving forward and inverse problems based on the digital mockup (DMU). The following methods were used: analysis of existing and common production engineering measures of the A/C TPP, mathematical models for evaluating the performance of forward and inverse problems during development, production and control. The following results were obtained. According to the analysis, production engineering measures of the TPP are established and their role in reducing the TPP terms is determined. The concepts of “design manufacturability” and “manufacturability” as components of the product development process are interconnected, as well as “production manufacturability” and “operational manufacturability” as components of the production and operation processes are interconnected. It is shown that the creation correctness of the DMU used in forward and inverse problems with all TPP stages becomes decisive in setting the A/C TPP terms. The use of the DMU bypasses the additional creation of models and fits with CNC and CAD/CAM-systems, which reduces the TPP terms and facilitates the interconnection between its design and technological stages. Conclusions. The scientific novelty of the obtained results is as follows: production engineering measures are logically grouped and their role is defined to reduce the A/C TPP terms; shaping process algorithms for the A/C manufacturing during the TPP are developed by solving forward and inverse problems; following a single DMU, the following models are established: supply of material and bringing it to the workpieces state, shaping for parts manufacturing, parts kitting before assembly and performing assembly operations by changing the shape of the connecting elements. The proposed algorithms can be developed for the A/C created using outdated assembly methods and which require repair or prototyping using modern engineering methods, which can be the subject of further research.

Keywords

• авіаційна техніка
• аналітичний еталон
• алгоритм
• формоутворення
• технологічна підготовка виробництва
• пряме та зворотне завдання