Wiring harness design in CATIA V5 - 3D modeling Week 7 Challenge

Q.1

Aim: Flatten the harness assembly completed in “week 4 challenge”. Place the flattened view on drawing sheet. Ensure bundles with protective coverings has different visuals on drawing view.

Wiring Harness

The wiring harness is the combination of electrical cables, or assembly of wires, that connects all electrical and electronic (E/E) components in the automotive vehicle, like sensors, electronic control units, batteries, and actuators. The wiring harness handles the energy and information flow within the E/E system to fulfil primary car functions, such as steering and braking as well as secondary car functions, such as ventilation and entertainment.

Connector

Components of an electrical circuit are electrically connected if an electrical current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection between parts of an electrical circuit, or between different electrical circuits, thereby joining them into a larger circuit.

Protective Covering

Thermal management tubes and sleeves are designed to operate under high temperatures and provide superior fire resistance under extreme conditions. These tubes and sleeves are difficult to ignite, and they self-extinguish promptly. The most common types of cable and wire protection are braided sleeving, corrugated loom, heat shrink, vinyl tubing and conduit. A typical wiring harness drawing has cable lengths, component view, grommet, connector specifications and inline connectors. 

Flattening

CATIA – Electrical Wire Harness Flattening provides automatic and complete flattening of 3D Electrical Harnesses for manufacturing documentation in a concurrent engineering environment.

Assembly

• Use the existing assembly of Assignment 3.
• Create the Flattening Product and define all the parameters.
• Add the assembly in flattening product using Extract option.
• Wiring Harness Assembly is added in the Wire Flattening Product as “Ehf.1” extension is added in the name of assembly.
• Select the flatness option and flat the assembly.
• Use Rotate and other commands to position assembly as per given layout.
• Save the product file using save management in same folder.

Drawing

• Create new drawing file.
• Use front view to extract the view of assembly in drawing.
• Use orientation to set the view in proper layout.
• Name the parts in the drawing.

Reference

• https://www.synopsys.com/glossary/what-is-wiring-harness.html
• https://en.wikipedia.org/wiki/Electrical_connector
• https://www.citec.com/engineering-and-technical-documentation-services-offering/product-engineering/wiring-harness-design/#:~:text=The%20most%20common%20types%20of,connector%20specifications%20and%20inline%20connectors.
• https://www.inceptra.com/solution/electrical-wire-harness-flattening/#:~:text=CATIA%20%E2%80%93%20Electrical%20Wire%20Harness%20Flattening,in%20a%20concurrent%20engineering%20environment.