Original Date: 10/20/1997
Revision Date: 01/18/2007
Information : Common Electrical Electronic Data System
The Common Electrical Electronic Data System (CEEDS) is a wire harness jig tool design database that uses the Unigraphics 3-D master model for all engineering, manufacturing, tooling, and quality assurance functions within Northrop Grumman’s Product Definition IPT. CEEDS designs, develops, and maintains the configuration control of electrical schematics, system wiring diagrams, cable assembly build-to packages, and circuit configurations for wire harness jig board master tooling.
The development process begins by importing the 3-D master model wire harness data into CEEDS. Since the 3-D model contains only geometric data (e.g., cable routing configuration, length, center line to connectors), the individual wire pinouts, sizes, shield grouping, terminations, markings, and connector clocking must be added to CEEDS from the Unigraphics 2-D drawing database for the jig tooling.
The 3-D master model data must initially be converted to a 2-D ASCII file before being imported into CEEDS and assigned as a drawing file. Then, CEEDS integrates the 2-D data and flat patterns a jig board based on the 3-D routing information, which will be used for developing the wire harness jig master tool. The second integration within CEEDS calculates the diameter information of the harness bundles and then verifies the lengths, breakouts, connector clocking, and braid stops. This information is exported back to the 3-D model database for clamp size and structural penetration verification. Finally, the wire lists, diagrams, and schematics are generated for the build-to package. As a result, CEEDS now contains a digital master jig board layout that can be printed out to form the jig board.
Once the wire lists, diagrams, schematics, and jig board master tooling digital data are generated, they are put under configuration control. The 3-D master model is also put under configuration control so that any changes to the 3-D model will automatically flag changes to the associated jig tooling data in CEEDS. CEEDS will then update the build-to package for the affected jig tooling.
By using CEEDS, Northrop Grumman has effectively eliminated manual development of the wire harness jig board mylars for wire harness best fit. CEEDS has also improved the configuration control by tying together the product definition data for wire harness tooling into an on-line accessible database.
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