Technical Briefs

An Approach for Automated and Optimized Selection of Weldguns for Spot Welding in Automotive Body Shop

[+] Author and Article Information
Ashish Gupta1

General Motors R&D,  India Science Lab, Bangalore-560066, Karnataka, Indiaashish.gupta@gm.com

Gopalakrishna K. Shastry

General Motors R&D,  India Science Lab, Bangalore-560066, Karnataka, Indiak.shastry@gm.com

Narahari K. Hunsur2

General Motors R&D,  India Science Lab, Bangalore-560066, Karnataka, Indiahk.narahari@gmail.com

Wayne Cai

General Motors R&D,  Manufacturing Systems Research Lab, Warren, MI 48090-9055wayne.cai@gm.com

Robert Tilove

General Motors R&D,  Manufacturing Systems Research Lab, Warren, MI 48090-9055robert.tilove@gm.com


Corresponding author


Present address: Professor, M. S. Ramaiah School of Advanced Studies, Bangalore-560058, India

J. Manuf. Sci. Eng 134(3), 034501 (Apr 25, 2012) (4 pages) doi:10.1115/1.4005795 History: Received October 28, 2010; Revised November 04, 2011; Published April 24, 2012; Online April 25, 2012

During process planning stage in an automotive vehicle development process (VDP), one of the tasks is to select tools such as weldguns and fixtures from large tool libraries and assign them to individual manufacturing operations. Software packages merely pick and validate individual library items to find “a solution.” Further, no design assistance is provided to configure a valid new tool. Currently, in automotive industry, the tool selection process is manual, local, and subjective. It leads to proliferation of tool variants resulting in increased cost and reduced operational flexibility. This paper proposes an approach for automated and optimized selection of tools. In the proposed approach, a tool is characterized in terms of its design parameters. The vehicle geometry is analyzed to identify “solution space,” i.e., the free space quantified in terms of bounds on the tool’s design parameters. The solution space of each manufacturing operation and the design parameters of every tool are used to generate the capability matrix (CM), which shows interoperability of tools. Using CM, tool assignment is formulated as an integer programming (IP) problem. The paper describes the algorithmic details of the proposed approach, for selection of weldguns for spot welding operation in automotive body in white (BIW) assembly shop.

Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Design parameters of a "P" type weldgun

Grahic Jump Location
Figure 2

Weldgun access and approach direction

Grahic Jump Location
Figure 3

A capable weldgun in solution space (shaded)

Grahic Jump Location
Figure 4

Scan line representation of part-section-curves



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In