Trishch A. Assessment of interchangeability of coordinated deep holes in engineering with the use of information systems

Possibilities of the machine - device - tool - workpiece system to ensure the accuracy of machining as a complex indicator of interchangeability are considered. The characteristics of parts manufactured on aggregate machines are analyzed, the main characteristics of deep coordinated holes are determined and technological schemes of their production are considered. Typical equipment, materials, cutting tools and quality control methods are considered. A statistical analysis of parts manufactured on aggregate machines was carried out, as a result of which quantitative data on the main characteristics of parts were also established. Experimental studies to assess the interchangeability of the manufacture of deep coordinated holes. The main task of the experiments is to find mathematical models of the scattering fields of deep coordinated holes in different schemes of their manufacture, namely with the direction of the cutting tool and without its direction. As a result of a full factorial experiment, mathematical models of accuracy of deep coordinated holes in size from base to holes and in positional deviation between holes in the scheme with the direction of the cutting tool were obtained, and normative numerical values of scattering fields for different diameters and materials were obtained. The obtained mathematical dependences of the scattering fields in the manufacture of deep coordinated holes in the system with the direction of the cutting tool and three transients in the system without the direction of the cutting tool allowed to obtain a system of their normative numerical values depending on technological factors, technological process management in mechanical engineering. An information system for assessing the interchangeability of deep coordinated holes in mechanical engineering is proposed as a set of scientific, informational, technical, software and organizational tools for processing scientific and technical information to assess the interchangeability of deep coordinated holes in mechanical engineering at the stage of technological preparation. Created Web-application using technologies (HTML, CSS, JavaScript, NodeJS, MySQL) that allows you to use the program on any device with Internet access and allows you to assess the interchangeability of deep coordinated holes depending on technological factors and different processing schemes.