| Peer-Reviewed

Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces

Received: 22 November 2014     Accepted: 25 November 2014     Published: 27 December 2014
Views:       Downloads:
Abstract

Axial piston machine of swashplate type is the common design widely used for many hydraulic applications because of its simplicity, compact design and low cost. However, this simplicity has a negative effect for piston transverse forces which limits machine performance. The main target of this study is to investigate a feasible design of a fixed displacement swashplate contour in order to minimize piston transverse forces. The design should compensate the contact surface mechanism between swasplate and piston end. Piston slipper is replaced by a ball that is rotatably mounted within a ball socket formed at the piston end. The ball runs on a circumferential contour groove formed on the swashplate surface. The sliding friction between swashplate and slipper is replaced by a rolling friction between ball and circumferential runway groove. Primary results show a rough estimation of 30% reduction of piston transverse forces due to the cam action radial forces elimination. This reduction promises to enhance overall machine performance.

Published in International Journal of Mechanical Engineering and Applications (Volume 3, Issue 1-2)

This article belongs to the Special Issue Advanced Fluid Power Sciences and Technology

DOI 10.11648/j.ijmea.s.2015030102.13
Page(s) 17-23
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Hydraulic, Swashplate, Axial Piston, Transverse Forces, Tribological Contact

References
[1] S. Gels and H. Murrenhoff, Simulation of the lubricating film between contoured piston and cylinder, International Journal of Fluid Power IJFP, Vol. 11. No. 2 (2010) 15-24.
[2] Y. Hong et al., Improvement of the low-speed friction characteristics of a hydraulic piston pump by PVD-coating of TiN, Journal of MechanicalScience and Technology (KSME Int. J.), Vol. 20 No. 3, (2006) 358-365.
[3] S. Kumar et al., Axial piston pump grooved slipper analysis by CFD simulation of three-dimensional NVS equation in cylindrical coordinates, Elsevier, Computers & Fluids, 38, (2009) 648-663.
[4] Xu B, Zhang J H and YANG HuaY, Investigation on structural optimization of anti-overturning slipper of axial piston pump, Sci China Tech Sci, 55, (2012) 3010-3018, doi: 10.1007/s11431-012-4955-x.
[5] A. Schenk, M. Zecchi, and M. Ivantysynova, Accurate Prediction of Axial Piston Machine Performance Through a Thermoelastohydrodynamic Simulation Model, In: ASME Symp. FPMC (2013) 2013-4456.
[6] A. Schenk and M. Ivantysynova, A transient fluid structure interaction model for lubrication between the slipper and swashplate in axial piston machines, The 9th International Fluid Power Conference, 9. IFK, March 24-26, Aachen, Germany, (2014).
[7] John D. North, Reciprocating pistons for pumps and motors, United States Patient Office, US 3356037A, (1967).
[8] Christian Spielvogel, Axial piston machines having a swashplate design. United States Patient Office, US 2012/0279387 A1, (2012).
Cite This Article
  • APA Style

    Mohamed Elashmawy. (2014). Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces. International Journal of Mechanical Engineering and Applications, 3(1-2), 17-23. https://doi.org/10.11648/j.ijmea.s.2015030102.13

    Copy | Download

    ACS Style

    Mohamed Elashmawy. Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces. Int. J. Mech. Eng. Appl. 2014, 3(1-2), 17-23. doi: 10.11648/j.ijmea.s.2015030102.13

    Copy | Download

    AMA Style

    Mohamed Elashmawy. Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces. Int J Mech Eng Appl. 2014;3(1-2):17-23. doi: 10.11648/j.ijmea.s.2015030102.13

    Copy | Download

  • @article{10.11648/j.ijmea.s.2015030102.13,
      author = {Mohamed Elashmawy},
      title = {Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces},
      journal = {International Journal of Mechanical Engineering and Applications},
      volume = {3},
      number = {1-2},
      pages = {17-23},
      doi = {10.11648/j.ijmea.s.2015030102.13},
      url = {https://doi.org/10.11648/j.ijmea.s.2015030102.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.s.2015030102.13},
      abstract = {Axial piston machine of swashplate type is the common design widely used for many hydraulic applications because of its simplicity, compact design and low cost. However, this simplicity has a negative effect for piston transverse forces which limits machine performance. The main target of this study is to investigate a feasible design of a fixed displacement swashplate contour in order to minimize piston transverse forces. The design should compensate the contact surface mechanism between swasplate and piston end. Piston slipper is replaced by a ball that is rotatably mounted within a ball socket formed at the piston end. The ball runs on a circumferential contour groove formed on the swashplate surface. The sliding friction between swashplate and slipper is replaced by a rolling friction between ball and circumferential runway groove. Primary results show a rough estimation of 30% reduction of piston transverse forces due to the cam action radial forces elimination. This reduction promises to enhance overall machine performance.},
     year = {2014}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Design of Swashplate Axial Piston Machines Having Low Piston Transverse Forces
    AU  - Mohamed Elashmawy
    Y1  - 2014/12/27
    PY  - 2014
    N1  - https://doi.org/10.11648/j.ijmea.s.2015030102.13
    DO  - 10.11648/j.ijmea.s.2015030102.13
    T2  - International Journal of Mechanical Engineering and Applications
    JF  - International Journal of Mechanical Engineering and Applications
    JO  - International Journal of Mechanical Engineering and Applications
    SP  - 17
    EP  - 23
    PB  - Science Publishing Group
    SN  - 2330-0248
    UR  - https://doi.org/10.11648/j.ijmea.s.2015030102.13
    AB  - Axial piston machine of swashplate type is the common design widely used for many hydraulic applications because of its simplicity, compact design and low cost. However, this simplicity has a negative effect for piston transverse forces which limits machine performance. The main target of this study is to investigate a feasible design of a fixed displacement swashplate contour in order to minimize piston transverse forces. The design should compensate the contact surface mechanism between swasplate and piston end. Piston slipper is replaced by a ball that is rotatably mounted within a ball socket formed at the piston end. The ball runs on a circumferential contour groove formed on the swashplate surface. The sliding friction between swashplate and slipper is replaced by a rolling friction between ball and circumferential runway groove. Primary results show a rough estimation of 30% reduction of piston transverse forces due to the cam action radial forces elimination. This reduction promises to enhance overall machine performance.
    VL  - 3
    IS  - 1-2
    ER  - 

    Copy | Download

Author Information
  • Mechanical Engineering Department, Engineering College, University of Hail, Hail, Saudi Arabia

  • Sections