Kruglov

pp.1-18

This article describes the results of studies on methods for increasing the reliability of  mechanical process operations of hard-to-machine materials . Technological system is treated as a combination of factors affecting the treatment process. The article estimates an impact of factors such as a choice of the tool material, applied technology environment, processing modes on the reliability of technological operations. For different workpiece materials ( steel and corrosion resistant alloys, tungsten, etc. ) it describes the conditions under which tool life increases and a coefficient of variation reduces.

The article presents a method of generation of assembly variants for a multipart device. The model of the multipart device is based on oriented hypergraphs of constraints. The oriented hypergraph describes the impossibility of assembly when constructional, technological, economical causes are present. Visual interpretation of the hypergraph is proposed; examples of constructive and technological constraints for the shaped charge are described.

This article deals with the discrete multistep method of assembly technology selection with finite number of selection options on each step. It’s suggested to generate the set of allowed selection options automatically with the usage of oriented hypergraphs. The hypergraph is defined with the set of vertices – parts to be assembled, and the set of edges – assembly operations. The proposed method is based on the system of constraints on allowed assembly variants in the form of oriented hypergraph, introduced by a developer, followed by generating of the full solutions set, with these constraints taken in the account.