Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1016/j.precisioneng.2020.11.012
Ключевые слова: aerostatic bearing, combined external throttling, dynamic quality, elastic orifice, negative compliance, zero compliance
Аннотация: Active aerostatic bearings, the main advantage of which is their ability to provide negative compliance, are gradually being used in metal-cutting machines as load-bearing structures and as automatic compensators for the deformation of their technological system. The disadvantages of such bearings are an increased tendency to instaПоказать полностьюbility and poor dynamics quality. The article proposes a new design and method for improving the quality of the dynamics of aerostatic bearings. The study was made based on the static and dynamic characteristics of an active radial aerostatic bearing, which compensates for lubricant consumption by elastic orifices. The design implements the principle of combined external throttling, the use of which makes it possible to obtain high-quality characteristics in the low, zero, and negative compliance modes of the carrier lubricating gap. It was also established so that the design with rigid orifices provides ideal dynamics quality and can be used instead of conventional aerostatic bearings with simple or ring diaphragms. © 2020 Elsevier Inc.
Журнал: Precision Engineering
Выпуск журнала: Vol. 68
Номера страниц: 72-81
ISSN журнала: 01416359
Издатель: Elsevier Inc.