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

Q1. Flatten the harness assembly completed in the “ week 4 challenge”. Place the flattened view on the drawing sheet. Ensure bundles with protective coverings has different visuals on the drawing view.

AIM- To prepare a flattened view of a previously created harness assembly

OBJECTIVE- The objective of this project is to create a flattened view for a harness assembly and then place it on the drawing sheet. It is desired that the bundles with protective coverings are represented with different visuals on the drawing sheet.

Ans:

The harness assembly and routing is done as per given reference.

HARNESS ASSEMBLY:

mechanical parts are electrically connected

HARNESS FLATTENING:

• Create a product file and navigate to the Electrical Harness Flattening for wire harness flattening option and save it in the same location where the wire harness or routing assembly is stored.
• Define the 'Harness flattening parameters' in order to flatten the required wire harness assembly.
• While defining the harness flattening parameters in the drawing menu single line is selected for bundle segment and double line is selected for protective coverings in order to differentiate between the wire bundle and cot tubes in drafting.

• Select the 'Extract' option from the Electrical Harness flattening workbench and select the Geometric bundle product in the wire harness assembly product file.
• Then wire harness assembly is imported to the Wire flattening product file with 'EHF' extension added to the geometric bundle assembly name.

• Select the 'Flatten' option to flatten the wire harness assembly.
• Then select the active plane, then select any one branch and then select the 'select all branches'.
• If there is no discontinuity in the bundle segment then all the branches will be selected and by pressing 'ok' the wire harness assembly will be flattened.
• Use 'Rotate' and other commands to rotate the branches and bring them in proper orientation as per the given layout.

CONVERSION TO 2D DRAFTING :

The flattened harness is converted to 2D drafting file by adding required annotations and saved as .CATDrawing file.

• Create a new drawing file and save the file in the same location.
• Insert the title block template and fill up the required details.
• Add the front view of the harness assembly by selecting any one of the flat faces of the connector and orient the view as per the requirement.
• Go to the properties of the view and select the '3D Wireframe' on and ' Is always visible' option in order to see properly the Wire bundle, connectors and the protection coverings.
• Show and name all the parts used in the wire harness assembly in form of a table.