Wiring harness design in CATIA V5 - 3D modeling Week 7 Challenge
AIM :
Flatten wiring harness assembly . Place Flatten assemny in Drawing.
DESCRIPTION :
Harness Flattening tool enables users to flatten 3D geometric harness data exported from supported MCAD systems. It prepares the flattened harness structure for import into E3. formboard where the manufacturing detail can be completed. MCAD systems enable mechanical engineers to model their products in 3D.
PROCEDURE :
1. New Product File
2. Setting Harness Flattening Parameters
3. Extract File
4. Flatten and Develop
1. New Product File :
Open catia V5 and opened a new product file and already created wiring harness assembly routing.Rename the product file into a 'Wiring Harness _Flattening'.
2. Setting up the flattening parameters:
- Switch to the Electrical Harness Flattening.
- Select the command called Harness Flattening Parameters.
- In general tab, change the minimum angle distance between them to 5 degree.
- Enable, keep existing tangent between bundle segment and connector during the flattening step.
- Also enable, Extract only the supports inside the geometrical bundle.
- Select the Radius of the bundle segment for the Roll radius for Quick roll.
- Keep the parameters default or change according to our requirement.
- Save this file as a Fattening product in the path where the required wiring harness assembly file is located.
3. Extract:
- Opened the wiring harness assembly file and tile the window vertically.
- Select the Flattening product file in model tree and select the extract command in Electrical Harness Flattening workbench and select the wiring harness assembly file to fetch the required information.
- Now the wiring harness assembly file details are extracted into the flattening product.

4. FLATTENING & DEVELOP :
- Now select the Flatten command in Eletrical Harness Flattening Workbench.
- Select the active plane as a required surface or any other required planes.
- Keep default parameters in Algorithm mode and Angle mode.
- Select the branches and select ok to perform the Flatten operation.
- Use the other commands such as rotate, roll, straighten and synchronization for the alignment of Flattening product.

Creating 2D Harness Flattening Drawing File.
- Open the new drawing file and save as a Harness Drawing File.
- Keep ISO as a standard and A0 ISO as a sheet style.
- And select Landscape.
- Now select the Front view command in Drawing file and select the required surface or the plane for view in the flattening product file.
- Now the flatten product details are delivered into the drawing file in a 2D.
- Now go to the properties and select the view tab, under dress up section, enable the 3D colors (if needed) and also enable the 3D wireframe is always visible.
- Now the full details of flatten product details are obtained in a 2D form.
- Now the connectors are represented in a 2D. So we can change the representation into 3D by changing the flattening parameters in the flattening prodct file.
