Increasing of Energy Efficiency of Spindles with Fluid Bearings

Abstract

Promising ways of energy efficiency gain of spindles with fluid flow bearings are offered. New design of journal hybrid flow bearing which contains spherical bearing pockets and adjustable valves with relay control system is offered to improve energy efficiency of spindle units of machine tools. To reduce power losses of fluid bearings at high speed special lubrication based on water with integrated system of corrosion protection is offered. Results of theoretical research of energy consumption of grinding machine tool with a new design of spindle hybrid bearings are presented. Power losses of the spindle unit with both new design and base design of journal bearings are assessed. Effectiveness of new design of spindle hybrid bearings at high operating speeds is shown.

Assembly Error Tolerance Estimation for Large-Scale Hydrostatic Bearing Segmented Sliders under Static and Low-Speed Conditions

“…A great advantage of HS bearings consists of the possibility of active control implementation [5]. The use of fluid bearings could lead to higher energy efficiency compared to rolling or sliding bearings [6], although HS lubrication requires a continuous external supply of pressurized lubricant. HS lubrication is a unique type of lubrication regime that is suitable for a wide range of applicationsfrom millimetres up to tens of metres [7]-for small ultra-precision machine tools [8], through medium-sized machining centres, or even for moving large structures, such as giant telescopes, radio antennas, or large-scale machining centres [9].…”

A novel geometry optimization approach for multi-recess hydrostatic bearing pad operating in static and low-speed conditions using CFD simulation

“…Chikurov [21] later continued modelling HS bearings using the electric eld analogy for possible simpli cation. A very important step in the HS bearing design process is optimization to achieve the best performance and reduce energetic demands as much as possible [22,23]. This is especially crucial in large-scale HS bearings, where the energy consumption is signi cant [24].…”

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

“…Chikurov [21] later continued modeling HS bearings using the electric field analogy for possible simplification. A very important step in the HS bearing design process is optimization to achieve the best performance and reduce energetic demands as much as possible [22,23]. This is especially crucial in large-scale HS bearings, where the energy consumption is significant [24].…”