Rational provision of functional properties of interference joints during individual selective assembly

Abstract

Background. Assembling batches of interference joints can be carried out in various ways. Individual selective assembly (ISA) has a number of advantages over conventional random assembly and group selective assembly. ISA technology has not been sufficiently studied, although its use in small-scale and medium-scale production is very promising. The article is devoted to identifying the benefitsof ISA. Materials and methods. By means of computer statistical modeling, various methods for assembling batches of interference joints and a new approach to the design of interference joints in ISA are investigated, and analytical methods are also used. Results. Statistical modeling of various methods for assembling batches of interference fit joints was carried out, and their comparative assessment was carried out. The advantages of ISA have been revealed, and a new approach to the design of joints with interference in ISA has been proposed, which makes it possible to reduce the level of interference in the connection and expand the tolerances on the dimensions of mating parts. It is proposed to use strengthening technology by using anaerobic materials for those tension connections that do not have the specified strength. Conclusions. Using ISA, it is possible to rationally ensure the specified functional requirements for joints with interference, reduce the cost of manufacturing the parts to be connected with a slight increase in the cost of implementing ISA with strengthening through the use of anaerobic materials.

Keywords

• interference connections
• assembly organization
• selective assembly
• design
• strengthening
• anaerobic materials