Abstract
The problem of modeling the spindle unit’s design for multi-operational lathes equipped with a set of modular tooling according to the rigidity criterion is considered. Structural and calculation schemes of a two-support structure in the form of a constant cross-section beam on duplexed angular contact ball bearings considering linear and angular stiffness are proposed. The procedure for constructing an analytical static formula of a spindle as an analytical dependence of its general compliance on the cantilever’s dimensions is used, which adequately reflects the conditionally constant (spindle on two supports) and replaceable (modular tooling) parts of the object under consideration. With the help of this formula, it is possible to express procedure probing the machine’s working space according to the compliance indicator. Analytical dependencies for finding a rational ratio of the spindle main design parameters from the standpoint of maximum rigidity are proposed. This approach is most effective for typical double-support spindles equipped with a variety of tooling. The efficiency of the APM Structure3D module in solving problems of assessing the stress-strain state, considering the complex mechanism of deformations in supports, is shown. The stress fields, which predetermine the picture of the researched object’s deformation state, are presented. For a comprehensive study of the spindle unit, the capabilities of APM Structure3D to determine the set of natural frequencies and the corresponding vibration modes are used.
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Krol, O., Sokolov, V. (2021). Research of the Spindle Units for Multioperational Lathes in the APM WinMachine Environment. In: Ivanov, V., Trojanowska, J., Pavlenko, I., Zajac, J., Peraković, D. (eds) Advances in Design, Simulation and Manufacturing IV. DSMIE 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-77719-7_5
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