Е-Публикации
Технически университет - София

Abstract: Published by Cefin Publishing House.In this paper, a comprehensive study of the rotary angular spindle head (ASH) design with a bevel gear drive is carried out. A variant of a preliminary design of a drive for a multi-operational machine tool equipped with a set of replaceable technological equipment is considered. A kinematic diagram of the main motion drive is proposed, oriented towards the process of machining hard-to-reach places of manufactured products. Advanced functionality of the integrated Creo Parametric system is used to build the ASH 3D project. In the Creo environment, using the procedure for creating an annular groove, a T-shaped contour of the "Contact plate" part groove is formed. For bevel gearing, a parameterized algorithm for constructing a spiral contour of a bevel gear tooth of the drive in the Creo Gears section is selected. To represent a more realistic image of the ASH assembly and its base components, the Render Studio module is used. The spacing of ASH individual components as a source of information at the stage of the manufacturability analysis for the designed object and its key elements is realized. A new approach to creating a two-stage bevel gear drive for modular spindle aggregates with minimum overall dimensions is proposed. The option of partitioning the total gear ratio by stages according to the criterion of bevel gears' teeth contact endurance is chosen as the main criterion. The lower limit of the gear ratio of the first stage at which the criterion of dimensions does not work is obtained. An alternative option for dividing the gear ratio from the condition of equal strength of the drive stages is also proposed. An experimental calculation of the reduction in the length of drive in range of gear ratios is carried out.

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