Journal Article

Hydropress assembling automation of interference fits with steel and titanium parts

Shchenyatsky, A V, Petrov, A V, Romanov, A V

2020

Overview

The main aspects of assembling automation of hydropress connections are considered - increasing the assembling performance, its stability and ensuring the quality of hydropress connections. A control system for the technological complex of hydropress assembling on a base of fuzzy logic methods has been developed, it provides the control of technological assembling modes, including: pressing speed, oil pressure, control of the force and pressing length, without identifying the parameters of assembling process, as well as the guaranteed presence of liquid friction in the non-linearity conditions of assembling process. The structure and control algorithm of automated hydropress assembling that ensure the maintenance of the working oil pressure during assembling are proposed. The algorithm is based on a set of feedbacks: pressure and position sensors, that provides a qualitative transition from boundary to liquid friction. A prototype of the technological complex of hydropress assembling of interference fits has been developed, that allows to assemble joints with a coupling diameter up to 50 mm in an automated mode. The results of experimental studies of automated assembling of steel and titanium joints are presented.

• Publisher: IOP Publishing