Nauka i Obrazovanie (Jan 2014)

Effect of Initial Surface Roughness on the Force of Diamond Smoothing

  • F. I. Antonyuk,
  • V. V. Kalmykov,
  • V. A. Fedorov

DOI
https://doi.org/10.7463/1214.0739192
Journal volume & issue
Vol. 0, no. 12
pp. 171 – 180

Abstract

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The article presents study results of one of the diamond smoothing technology methods. Force is the main technological parameter to define a degree of hardening and smoothing efficiency. The hardening and smoothing effects also depend on the feed rate, which determines a multiplicity of the smoothing force application in each point of machined surface. The range of force widely varies depending on the hardness of the processed alloy. Feed is characterized by quite narrow range that does not depend on the force. The influence of these two parameters on the characteristics of smoothed layer is fairly studied and reflected in the reference literature. Equally important parameter of diamond smoothing technology is roughness of initial surface. This parameter is restricted by the limited height of the surface roughness of original profile. In particular, for smoothing the relatively soft materials the initial surface roughness parameter is limited by the value micron. Such roughness is difficult to reach when machining the toughened low carbon steels. Generally, it is much more than ( micron).In order to study how the initial surface roughness with a great height of the profile surface roughness ( micron) affects the value of the optimum force and smoothing efficiency, a full factorial experiment has been conducted. Investigations were carried out to find out how the force, feed, and roughness of the initial surface effects on the roughness of smoothed one. Methods of mathematical statistics have identified both a dominant influence of the initial surface roughness and a significant effect of interaction between the initial surface roughness and the smoothing force on the roughness of smoothed surface. It is determined that the value of the optimal force of smoothing surface with a relatively low roughness (Ra = 2,0 micron) is significantly, 1.6 times, more than the force of the smoothing surface with roughness Ra = 4,0 micron.

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