Publication detail

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

MICHALEC, M. FOLTÝN, J. DRYML, T. SNOPEK, L. JAVORSKÝ, D. ČUPR, M. SVOBODA, P.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

Hydrostatic bearings come with certain advantages over rolling bearings in moving large-scale structures. However, assembly errors are a serious matter on large scales. This study focuses on finding assembly error tolerances for the most common types in segmented errors of hydrostatic bearing sliders: tilt and offset. The experimental part was performed in the laboratory on a full diagnostic hydrostatic bearing testing rig. An investigation of the type of error on bearing performance was first conducted under static conditions. We identified the limiting error-to-film thickness ratio (e/h) for static offset error as 2.5 and the tilt angle as θ = 0.46° for the investigated case. Subsequently, two types of offset error were investigated under slow-speed conditions at 38 mm/s. The limiting error for the offset error considering the relative bi-directional movement of the slider and the pad was determined as e/h < 1. The results further indicate that the error tolerance would further decrease with increasing speed. The experimental results of error tolerances can be used to determine the required film thickness or vice versa.

Keywords

tolerancing; error estimation; experimental investigation; hydrostatic lubrication; hydrostatic guideway

Authors

MICHALEC, M.; FOLTÝN, J.; DRYML, T.; SNOPEK, L.; JAVORSKÝ, D.; ČUPR, M.; SVOBODA, P.

Released

15. 11. 2023

Publisher

MDPI

Location

Switzerland

ISBN

2075-1702

Periodical

Machines

Year of study

11

Number

11

State

Swiss Confederation

Pages count

14

URL

https://www.mdpi.com/2075-1702/11/11/1025

Full text in the Digital Library

http://hdl.handle.net/11012/245128

BibTex

@article{BUT185335,
  author="Michal {Michalec} and Jan {Foltýn} and Tomáš {Dryml} and Lukáš {Snopek} and Dominik {Javorský} and Martin {Čupr} and Petr {Svoboda}",
  title="Assembly Error Tolerance Estimation for Large-Scale Hydrostatic Bearing Segmented Sliders under Static and Low-Speed Conditions",
  journal="Machines",
  year="2023",
  volume="11",
  number="11",
  pages="14",
  doi="10.3390/machines11111025",
  issn="2075-1702",
  url="https://www.mdpi.com/2075-1702/11/11/1025"
}