UNLOADED SKID

1. Painting Process Concept Development PAINT SHOP Sacrificial Wear Surface MATERIAL ENGINEERING CONCEPT MECHANICAL ENGINEERING CONCEPT BODY SHOP • Hardening bottom of AISI 1045 steel skids • Induction and Flame Hardening Techniques • Adding wear plates to skid bottoms made from high hardness, abrasion resistant material Design Requirements Reduce Wear Lifting skids off the accumulation chain will eliminate contact of skid bottoms and chain rollers Hardening bottom surface of the skids will reduce the wear rate on bottom of skids Top Wants: Performance Cost System Compatibility Deliverables: Wear Rate Price Testing Results Daimler-Chrysler : Car Transport Upgrade TEAM 3: John Barr Aladrian Crowder Hilary Goldman Matt Reber The Skid Lifting Concept Project Description Path of Skid Through Paint Shop Destructive nature of friction and wear has caused severe damage to skids used in paint shop. Worn skids must be replaced and system must be modified to decrease effects of friction and wear. ASSEMBLY at NAP PLANT LAYOUT Skid Lifter Prototype Design Mission Statement To develop a concept and working design that will significantly decrease the wear experienced by the skids. NO CHASSIS or INTERIOR Durango vehicles are painted after initial assembly What is a skid? Because the Durango has no wheels yet, the skids are used to transport Durango through the painting process Wedge Positions UNLOADED SKID LOADED SKID Occurrence of Wear • E-Coat jams rollers on accumulation chains. • Stationary skids experience friction from jammed rollers • Excessive wear from friction occurs on skids; leads to failure Shows roller and the groove it has worn into bottom of skid. Height of groove shown by arrows. Side of skid bottom has bent upward due to wear and subsequent weakness of the skid. Skid has jumped on top of cast iron rollers due to the bottom bending upward. Testing Results Other effects in the plant Sacrificial Wear Surface