Design and Technological Engineering of Gear Wheel Working Surfaces in a Gas Turbine Engine

Abstract

The design and production of gear wheels includes a number of specialized principles and disciplines aimed to practical application of scientific and practical knowledge. The proposed design method for the subsequent production of the gear configuration together with the technology of virtual life cycle modeling allows predicting its behavior in certain operating modes taking into account the capabilities of an existing production at the design stage. Ensuring the functional properties of the gearing is a complex task, which is solved at all stages of the mechanism life cycle. The solution requires a model of design and technological control of operability, covering the whole life cycle, based on the management of the gearing configuration and the way of objective assessment of the operational properties, based on ensuring the functionality and acceptability. A model of design engineering based on the analysis of the gear acceptability, particularly of the tooth working surface damage classification, based on the reliability of strength calculations, knowledge of materials and precision machining inherent in serial production, with the analysis of the serviceability by functional parameters is proposed. This model allows considering the inconsistencies as acceptable, which often appear, but are not significant. The possibility of making optimal design decisions at the design stage of developing the mechanism configuration in the conditions of using information on serial technological capabilities based on the concept of a “digital twin” when performing feedback between the technological and design directions of gear wheel creating is considered. This creates the groundwork for the development of a new organizational approach to the engineering development of the configuration of assemblies with a tight advantageous cooperation of the designer and technologist.