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research-article

Tool Accessibility Analysis for Robotic Drilling and Fastening

[+] Author and Article Information
David Dakdouk

Department of Aerospace Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
david.dakdouk@ryerson.ca

Fengfeng Xi

Department of Aerospace Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
fengxi@ryerson.ca

1Corresponding author.

ASME doi:10.1115/1.4036639 History: Received December 07, 2016; Revised April 24, 2017

Abstract

Robotic applications in aerospace manufacturing and aircraft assembly today are limited. This is because most of the aircraft parts are relatively crowded and have complex shapes that make tasks like robotic drilling and fastening more challenging. These challenges include tool accessibility, path and motion planning. In this paper, a process methodology was developed to overcome the tool accessibility challenges facing robotic drilling and riveting for aircraft parts that are located in crowded work environments. First, the tool accessibility was analyzed based on the Global Accessibility Area and the Global Accessibility Volume to determine the accessible boundaries for parts with zero, one and two surfaces curvatures. Then the path for the tool was generated while taking in consideration the approachability planning. This approach generates a number of intermediate points that enable the tool to manoeuvre around obstacles to reach the final target points if they are accessible. Last, a software application was developed to simulate the drilling and riveting tasks, and to validate the proposed process. The results of the simulation confirmed the proposed methodology and provided a numerical feedback describing the level of crowdedness of the work environment. The accessibility percentage can then be used by the design team to reduce the design complexity and increase the level of tool accessibility.

Copyright (c) 2017 by ASME
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