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A predictive model on surface roughness during internal traverse grinding of small holes

  • Hao Su
  • Changyong YangEmail author
  • Shaowu Gao
  • Yucan Fu
  • Wengfeng Ding
ORIGINAL ARTICLE
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Abstract

The surface roughness of nozzles has important influence on the quality of fuel atomization. The diameter of nozzles in aero engine is generally less than 1 mm. Because of the smaller diameter of the grinding wheel used, its stiffness is poor and thus the wheel tends to deflect under the grinding force. The deflection of grinding wheel has great influence on the actual feed, which ultimately affects the roughness. Therefore, a predictive model of the roughness during internal traverse grinding (ITG) is thus needed. Such a predictive model was established in this paper, in which the deflection of tool and interference of grooves were taken into consideration. In addition, the relationship between roughness and various input variables, namely, the rotating speed, the oscillation speed, the radial feed speed, the feed time, and the spark-out time, was established. Then several groups of experiments with different input variables were carried out to calibrate and validate the model, which demonstrated that the predictive model of surface roughness of ITG in small-hole nozzles has good accuracy, and provides guidance for the optimization of processing parameters.

Keywords

Internal traverse grinding Surface roughness Deflection of grinding wheel 

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Notes

Funding information

This research was supported by the Fundamental Research Funds for the Central Universities of China (NO. NS2018031).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Hao Su
    • 1
  • Changyong Yang
    • 1
    Email author
  • Shaowu Gao
    • 1
  • Yucan Fu
    • 1
  • Wengfeng Ding
    • 1
  1. 1.College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjingPeople’s Republic of China

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