<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The work is devoted to the research of precision regularities in a spindle unit by the trajectory of the spindle installed on hydrostatic bearings. The mathematical model of trajectories spindle with lumped parameters that allows to define the position of the spindle with regard the simultaneous influence of design parameters, geometrical deviations ofform, temperature deformation bearing surfaces, the random nature of operational parameters and technical loads of hydrostatic bearings has been developed. Based on the results of numerical modeling the influence of shape errors of bearing surface of hydrostatic bearing on the statistical characteristics of the radius vector trajectories of the spindle by varying the values rotational speed of the spindle and oil pressure in front hydrostatic bearing has been developed. The obtained statistical regularities of precision spindle unit have been confirmed experimentally. It has been shown that an effective way to increase the precision of spindle units is to regulate the size of the gap in hydrostatic spindle bearings. The new design of an adjustable hydrostatic bearing, which can improve the accuracy of regulation size gap has been proposed.</p></abstract>

The work is devoted to the research of precision regularities in a spindle unit by the trajectory of the spindle installed on hydrostatic bearings. The mathematical model of trajectories spindle with lumped parameters that allows to define the position of the spindle with regard the simultaneous influence of design parameters, geometrical deviations ofform, temperature deformation bearing surfaces, the random nature of operational parameters and technical loads of hydrostatic bearings has been developed. Based on the results of numerical modeling the influence of shape errors of bearing surface of hydrostatic bearing on the statistical characteristics of the radius vector trajectories of the spindle by varying the values rotational speed of the spindle and oil pressure in front hydrostatic bearing has been developed. The obtained statistical regularities of precision spindle unit have been confirmed experimentally. It has been shown that an effective way to increase the precision of spindle units is to regulate the size of the gap in hydrostatic spindle bearings. The new design of an adjustable hydrostatic bearing, which can improve the accuracy of regulation size gap has been proposed.

Accuracy of Spindle Units with Hydrostatic Bearings

Chernihiv National University of Technology, Mechanical Engineering Department, Shevchenko Street, 95, Chernihiv, Ukraine

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Accuracy of Spindle Units with Hydrostatic Bearings"}

The work is devoted to the research of precision regularities in a spindle unit by the trajectory of the spindle installed on hydrostatic bearings. The...

Accuracy of Spindle Units with Hydrostatic Bearings

Online veröffentlicht: 08. Juni 2016

Seitenbereich: 117 - 124

Eingereicht: 02. März 2015

Akzeptiert: 13. Mai 2016

DOI: https://doi.org/10.1515/ama-2016-0019

Schlüsselwörter
Spindle, Hydrostatic Bearing, Spindle Unit, Adjustable Hydrostatic Bearing, Machining Accuracy, Trajectory, Bearing Surface Imperfection

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Accuracy of Spindle Units with Hydrostatic Bearings

Online veröffentlicht: 08. Juni 2016

Seitenbereich: 117 - 124

Eingereicht: 02. März 2015

Akzeptiert: 13. Mai 2016

DOI: https://doi.org/10.1515/ama-2016-0019

SchlüsselwörterSpindle, Hydrostatic Bearing, Spindle Unit, Adjustable Hydrostatic Bearing, Machining Accuracy, Trajectory, Bearing Surface Imperfection

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
Spindle, Hydrostatic Bearing, Spindle Unit, Adjustable Hydrostatic Bearing, Machining Accuracy, Trajectory, Bearing Surface Imperfection