Geometrical consideration for mechanical contact between rolling circle and surface roughness as an improvement to the surface profile

  • Tsuyoshi Shimizu Faculty of Engineering, University of Yamanashi, Yamanashi 4008511, Japan. Phone: +81552208445; Fax: +81552208445
  • Yasutake Hramiishi Faculty of Engineering, University of Yamanashi, Yamanashi 4008511, Japan. Phone: +81552208445; Fax: +81552208445
  • Takaaki Ishii Faculty of Engineering, University of Yamanashi, Yamanashi 4008511, Japan. Phone: +81552208445; Fax: +81552208445
  • Yuzairi Abdul Rahim Faculty of Mechanical Engineering Technology, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia
  • Mohd Fadzil Ali Ahmad School of Engineering, Faculty of Science and Technology, Quest International University, Ipoh 30250, Malaysia
  • Hiromi Watanabe Faculty of Engineering, University of Yamanashi, Yamanashi 4008511, Japan. Phone: +81552208445; Fax: +81552208445
Keywords: Measurement, Surface profile, Roughness, Surface topology, Sphere tip radius, Machine measurement

Abstract

This paper describes measurement methods of surface profiles that improve contact-type displacement sensor outputs by focusing on the contact point between the sphere tip of the sensor and the rough surface. We examined the geometry of a surface profile model and compared measurements using various methods with the measurement using a roughness meter. The spherical tip of the contact type displacement sensor touches the measurement surface and detects the displacement. The sphere tip radius of a typical contact-type displacement sensor ranges from 1–3 mm, causing the roughness curve to be “filtered” by the radius of the sphere.  Three methods for estimating the valley portion of the surface profile are evaluated in this study: a) linear approximation of the concave portion of the surface profile, b) function approximation of the concave portion, and c) using the known nose radius of the machining tool. The following sphere tip radii were used to measure actual surface profiles: 0.25 mm, 0.5 mm, 1.0 mm and 1.5 mm. Given the conditions of the experimental model, we found that surface profiles with a roughness that approximates a predictable curve can be measured with a high degree of accuracy.

Published
2021-03-15
How to Cite
Shimizu, T., Hramiishi, Y., Ishii, T., Rahim, Y., Ahmad, M., & Watanabe, H. (2021). Geometrical consideration for mechanical contact between rolling circle and surface roughness as an improvement to the surface profile. Journal of Mechanical Engineering and Sciences, 15(1), 7846 - 7859. https://doi.org/10.15282/jmes.15.1.2021.19.0619
Section
Article