Забезпечення якості високоточних з'єднань в умовах серійного виробництва на основі інформаційного супроводу технологічного процесу складання

Abstract

Thesis for granting the Degree of Doctor of Technical sciences in speciality 05.02.08 – Manufacturing engineering. National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. The thesis has solved a manufacturing problem of modern manufacturing engineering, which is connected to ensuring the assembly of high-quality joints from parts of ordinary quality in conditions of serial production. Considering the use and management of information on the actual size of the parts a method of kitting during the assembly has been proposed, which excludes incomplete production, provides minimization of joint parameters scatter in the party without the necessity of increasing the accuracy in the production of the combined parts. The effectiveness of the method has been thoroughly studied and a conclusion has been made about its applicability in conditions of serial production. An approach which divides the parts into quality categories according to the degree of approximation to the actual size of nominal characteristics has been proposed, and a calculation of dimensional chains based on the mentioned approach has been tested. The efficiency model for a cylindrical joint with pressure has been improved, and the model has been tested on experimental joints. The effect of the shape geometry errors on the efficiency of the joint with pressure assembled with heating has been studied, and advice on modelling the assembly process of joints assembled with heating has been given. The research results have been tested on serial products and implemented at machine-building enterprises of Ukraine.