Analiza wpływu czynników konstrukcyjnych i technologicznych na hałaśliwość przekładni śrubowych kulkowych

Przemysław Pieniecki

Abstract

An important goal of the work of the machine tool designers is the reduction of noises. The reduction can be achieved by a reduction of noises of the ball screw system - the significant source of the noise. The most significant source of the ball screw noise is the circulation of balls in the closed circulation, especially in the “transient” phase of the balls’ motion, when a ball enters the working circulation and its load increases, or when it leaves the working circulation and its load decreases to zero. A transient phase forces take a major part on the ball screw friction phenomenon. Digital simulation of these forces has been carried out in function of rotational speed for a definite diameter of screws and different values of lead and ball diameter. Drill friction on ball track and friction on the inside surface of return pipe are also important sources of the noise. Rolling quality coefficient depends on of nut and screw thread angle. Small ball diameter determinates accurate rolling quality which decreases the noise emission. Analysis of dynamic and friction phenomena is essential to understand properly the main noise sources on ball screw drive. Particularly dangerous for the servo drives which included ball screw is the resonance frequency of the transmission at the entry of balls into the load, which may cause an increase of vibration and associated with it noise. The future of the modern ball screws belongs to the high-precise (without of the technology errors) threads of screws. A higher length of the lead of the thread leads to a lower number of revolutions and lower noises as well as prolonged the life time cycle of the ball screws. The adoption of the modern balls material, like sintering of metallic powders (with lower density and comparable to high-alloy steel - stiffness) is recommended to meet the lower noise emission and high load requirements on ball screw.
Diploma typeDoctor of Philosophy
Author Przemysław Pieniecki (FACME)
Przemysław Pieniecki,,
- Faculty of Automotive and Construction Machinery Engineering
Title in PolishAnaliza wpływu czynników konstrukcyjnych i technologicznych na hałaśliwość przekładni śrubowych kulkowych
Languagepl polski
Certifying UnitFaculty of Automotive and Construction Machinery Engineering (FACME)
Disciplinemechanical engineering / (technology domain) / (technological sciences)
Start date25-10-2006
Defense Date18-03-2010
End date21-04-2010
Supervisor Jerzy Sobolewski (FACME / IMDF)
Jerzy Sobolewski,,
- Institute of Machine Design Fundamentals

Internal reviewers Zbigniew Dąbrowski (FACME / IMDF)
Zbigniew Dąbrowski,,
- Institute of Machine Design Fundamentals
External reviewers Henryk Madej - [Silesian University of Technology (PolSL)]
Henryk Madej,,
-
- Politechnika Śląska
Pages105
Keywords in Englishxxx
Abstract in EnglishAn important goal of the work of the machine tool designers is the reduction of noises. The reduction can be achieved by a reduction of noises of the ball screw system - the significant source of the noise. The most significant source of the ball screw noise is the circulation of balls in the closed circulation, especially in the “transient” phase of the balls’ motion, when a ball enters the working circulation and its load increases, or when it leaves the working circulation and its load decreases to zero. A transient phase forces take a major part on the ball screw friction phenomenon. Digital simulation of these forces has been carried out in function of rotational speed for a definite diameter of screws and different values of lead and ball diameter. Drill friction on ball track and friction on the inside surface of return pipe are also important sources of the noise. Rolling quality coefficient depends on of nut and screw thread angle. Small ball diameter determinates accurate rolling quality which decreases the noise emission. Analysis of dynamic and friction phenomena is essential to understand properly the main noise sources on ball screw drive. Particularly dangerous for the servo drives which included ball screw is the resonance frequency of the transmission at the entry of balls into the load, which may cause an increase of vibration and associated with it noise. The future of the modern ball screws belongs to the high-precise (without of the technology errors) threads of screws. A higher length of the lead of the thread leads to a lower number of revolutions and lower noises as well as prolonged the life time cycle of the ball screws. The adoption of the modern balls material, like sintering of metallic powders (with lower density and comparable to high-alloy steel - stiffness) is recommended to meet the lower noise emission and high load requirements on ball screw.
Thesis file
Pieniecki.pdf 5.59 MB
Citation count*5 (2020-09-18)

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