Non-contact surface roughness measurement of round bars considering the effect of machining striations

Yoshitaka Igarashi; Kazunori Yamazaki

doi:10.1117/12.2677141

4 October 2023 Non-contact surface roughness measurement of round bars considering the effect of machining striations

Yoshitaka Igarashi, Kazunori Yamazaki

Proceedings Volume 12672, Applied Optical Metrology V; 126720V (2023) https://doi.org/10.1117/12.2677141
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

By measuring scattered light, our goal is to improve the accuracy and automation of manual inspection. In this study, we attempted to measure the non-contact surface roughness of the curvature surface of a round bar sample by capturing and analyzing the scattered light distribution. We also evaluated the influence of machining marks on the round bar. A round bar workpiece (cold forged material, surface polished) was irradiated with a He-Ne laser (spot diameter Φ0.8 mm, maximum power 8 mW, wavelength 632.8 nm) and a PIN photodiode (sensor size Φ1.5 mm) was scanned to acquire the scattered light intensity distribution. The detected scattered light distribution was fitted to a scattered light distribution model based on the generalized Harvey-Shack theory to calculate surface roughness parameters. The extracted roughness parameters are root mean square roughness ”Rq” and half width of autocovariance ”lc”. The PIN photodiode was scanned in the direction of the machining striations and in the direction orthogonal to the striations, and the ratio of the lc in the two directions was used to evaluate the surface roughness anisotropy parameter ”Str”. By determining ”Str”, we can consider the effect of machining striations on machine performance. This paper presents the results of the evaluation of Str compared to the conventional method, which allows non-contact, non-destructive measurement.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yoshitaka Igarashi and Kazunori Yamazaki "Non-contact surface roughness measurement of round bars considering the effect of machining striations", Proc. SPIE 12672, Applied Optical Metrology V, 126720V (4 October 2023); https://doi.org/10.1117/12.2677141

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available