CONTROLLING THE ACCURACY OF TRAJECTORY MOVEMENTS OF MACHINE TOOL ACTUATORS ON HYDROSTATIC BEARINGS

Abstract

The article is devoted to improving the accuracy and productivity of heavy machine tools by developing and applying adaptive hydrostatic spindle bearings. A literature review was conducted and the relevance of finding new ways to improve accuracy, in particular through the use of advanced designs of bearing units, was proved. The main direction of research is the search for ways to improve machining accuracy on heavy-duty lathes by means of adaptive control of the technological system parameters. It has been established that the use of hydraulic supports with fluid friction is very promising in machine tool construction, and for heavy machine tools such supports are, in some cases, the only design option that provides the required performance characteristics of the units - high load-bearing capacity, durability, rigidity, accuracy, etc. The possibility of using calculation methods based on the implementation of the finite element method is shown. Specific recommendations for the calculation and design of hydrostatic spindle assemblies are given.