Machining Versus Molding Tolerances in Manufacturing Automotive Sealing Systems

Ben Chouchaoui*, Joe Gutierrez, Vince Mungioli and Kassem Ghanem
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Ben Chouchaoui*: Windsor Industrial Development Laboratory, Inc. Windsor, Ontario N9E 2L6 Canada
Joe Gutierrez: Ford Motor Company, Engine Engineering and Assembly Operations Novi, MI 48377 USA
Vince Mungioli: VAM Enterprises Inc (Plastics Sales and Consulting) Rochester Hills, MI 48309 USA
Kassem Ghanem: Department of Business Administration Lawrence Technological University, Southfield, MI 48075-1058 USA

Scientific Review, 2019, vol. 5, issue 10, 179-184

Abstract: The automotive industry has been at the forefront of converting traditional metal parts to plastics. The latter surely offer greater design freedom, opportunity for consolidation, fewer assembly operations, reduced secondary finishing, weight reduction, lower total system costs, a range of properties tailored to specific applications, the ability to withstand temperatures, immunity to most chemicals and corrosive environments. They offer processing in many colors, electrical non-conductivity (insulation from electrical shocks), good thermal breaks (“warmth-to-the-touch†), and low sound transmission (tendency to muffle noise). Nonetheless, plastics have only tapped an estimated 15% of their tremendous potential to replace metals. This is particularly to increase with newer high-performance plastics, increasing sophistication in alloying and blending technologies, and use of computer-aided design and engineering (CAD/CAE) systems. The latter enable engineers to visualize complex parts and molding tools more effectively and faster than ever before. This article identifies fundamental steps and requirements to conduct an efficient and successful conversion of metallic parts to plastics, reviewing the replacement design process from concept to production; an under-the-hood rear retainer for Ford Motor Company is detailed as a case study.

Keywords: Optimization; Metal to plastic conversion; Weight reduction; Fuel economy; Exhaust emissions (pollutants) reduction; Automotive industry; Composites; Plastics; Sealing systems; Hyper-elasticity; Friction rubbing; Failure prediction; Von mises stress; Contact; Optimal interference; Insertion/assembly forces; Nonlinear finite element analysis (FEA); MARC; Manufacturing/molding tolerances; Least/ maximum material conditions (LMC/MMC); Computer-aided engineering (CAE). (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:arp:srarsr:2019:p:179-184

DOI: 10.32861/sr.510.179.184

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