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A Study of the Impact of Workpiece Location on Machining Performance of a 2-DoF PKM Based Machine Tool

[+] Author Affiliations
A. B. Koteswara Rao, Sanjay Darvekar

Gayatri Vidya Parishad College of Engineering, Visakhapatnam, India

K. Ramji

Andhra University, Visakhapatnam, India

Paper No. MSEC2013-1100, pp. V001T01A050; 5 pages
doi:10.1115/MSEC2013-1100
From:
  • ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference
  • Volume 1: Processing
  • Madison, Wisconsin, USA, June 10–14, 2013
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5545-4
  • Copyright © 2013 by ASME

abstract

This paper presents the impact of workpiece location on the machining performance of a 2-degree of freedom Parallel Kinematic Machine (PKM) tool. The PKM behavior is highly non-uniform and depends on the tool position within the workspace. The structural deformation and vibration due to cutting loads affect the quality of machined surfaces. The aim of the present study is to find the optimal tool position (workpiece location) where the workpiece is machined to a specific quality level. End-milling operations are carried out at various locations within the workspace and the surface roughness of machined surface (Ra) is measured at each location. A regression model is developed to predict the surface roughness. The study shows that the workpiece location has significant impact upon surface roughness of the machined part. Finally, a suitable workspace is defined for end-milling operation.

Copyright © 2013 by ASME

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