1. Maria Krutikova
2013 vs 2014 Jigging Specifications for Comparison
Specification 2013 2014
Number of Chassis Jigs 53 54
Number of Suspension Jigs 52 59
Number of Jigs with Vertical Holes 14 6
The goal for the 2014 jigging was to reduce jig manufacturing time and make jig assembly as efficient as
possible. This was done in several ways:
 Reduce the number of tapped holes. Reduction of additional manufacturing processes reduces
time.
 Reduce the number of “vertical holes”. Due to limitations of our manufacturing equipment,
drilling holes vertically into tall pieces of steel requires a complicated set up, which increases
manufacturing time.
 While the amount of jigs increased slightly, the complexity of jigs decreased, therefore
decreasing manufacturing time.
 For ease of assembly, jigs were designed symmetrically. Left side jigs can be interchanged with
Right side jigs due to their symmetry. This decreases the need for reassembly.
2013 vs 2014 Jigging Comparison via CAD
2013 Jig Design

2. Maria Krutikova
2014 Jig Design
Complexity of Jigging Assembly Simplified for 2014
2013 Jig Design
2014 Jig Design
Note the suspension jig structures shown in green in both models. The 2013 design contains jig
assemblies of up to 7 jigs. Almost all suspension jig assemblies in the 2014 model consist of 2 jigs.

3. Maria Krutikova
Reduction of Vertical Holes
2014 2013 Jig Design Jig Design
Due to limitations of the mills in our machine shop, drilling vertical holes takes more set up and
therefore more time. Rather than drilling holes vertically into tall jigs as seen in the 2013 design, the
same structure can be achieved with holes being drilled into the short part of the jig rather than the tall
part.
Optimize Jig Location for Welding Ease
2013 Jig Design
2014 Jig Design
The purpose of jigging the chassis is to provide accurate tube
placement for welding. The 2014 Jig Design allows for
unobstructed access to joints, allowing a welding torch to pass
through with ease. The 2013 Jig Design has jigs placed near joints,
so jigs have to be taken off in order to access the joint for welding.
This defeats the purpose of jigging since the chassis is no longer
securely fixtured. The 2014 design allows for ergonomic welding
and more precise tube placement. No jigs need to be removed for
welding and then replaced, which saves chassis assembly time.