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VISUAL OBJECT-ORIENTED DfM/DfA METHOD AND USER INTERFACE

IP.com Disclosure Number: IPCOM000246342D
Publication Date: 2016-Jun-01

Publishing Venue

The IP.com Prior Art Database

Related People

Greg Twiss: AUTHOR [+3]

Abstract

Visual object-based "Design for Manufacturability"/"Design for Assembly" DfM/DfA verification is a method and interface that transforms design verification speed and efficiency by putting wider and deeper feature assessment coverage and rule-setting directly into the hands of engineers. Visual object features in three-dimensional (3D) Computer Aided Design (CAD) software enables enhanced feature recognition and paired with a flexible visual rule-setting language allows users to easily write, edit, and reuse verification rules in new designs. This solution greatly improves 3D feature recognition enabling up to 100% feature assessment coverage. It provides a simplified and flexible rule-setting through embedded context inherent in the design creation features. DfM rules become contextual with the feature creation.

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VISUAL OBJECT-ORIENTED DfM/DfA METHOD AND USER INTERFACE

 AUTHORS: Greg Twiss Joe Wackerman

Benny Yap

CISCO SYSTEMS, INC.

ABSTRACT

    Visual object-based "Design for Manufacturability"/"Design for Assembly" DfM/DfA verification is a method and interface that transforms design verification speed and efficiency by putting wider and deeper feature assessment coverage and rule-setting directly into the hands of engineers. Visual object features in three-dimensional (3D) Computer Aided Design (CAD) software enables enhanced feature recognition and paired with a flexible visual rule-setting language allows users to easily write, edit, and reuse verification rules in new designs. This solution greatly improves 3D feature recognition enabling up to 100% feature assessment coverage. It provides a simplified and flexible rule-setting through embedded context inherent in the design creation features. DfM rules become contextual with the feature creation.

DETAILED DESCRIPTION

     In electro-mechanical equipment design the terms "Design for Manufacturability" (DfM) and "Design for Assembly" (DfA) refer to common design verification practices. These and other "DfX" techniques are intended to confirm that a product has been designed to meet certain functional and producibility standards that are aligned appropriately to manufacturing process capabilities. Such verification helps ensure efficient mass production and attaining predictable product cost, quality and delivery targets. Indeed, as equipment complexity and global competition both increase, "design verification thoroughness and speed" is becoming an important source of competitive advantage for global companies.

    DfM/DfA checks are traditionally performed by an engineer consulting written design rules and specifications, and applying these rules manually to an assortment of

Copyright 2016 Cisco Systems, Inc.
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parts with many unique features. These rules are often negotiated and defined in collaboration with manufacturing partners, in an effort to match actual manufacturing capabilities. More recently, software vendors have created tools that help automate DfX checks, yielding faster analysis earlier in the product development cycle.

    DfM/DfA assessment tools typically require inputting a digital 3D model design file representing, for example, a printed-circuit board (PCB) layout or mechanical part solid model. Individual design features are then checked for compliance against a list of DfM/DfA rules contained in a "rule-set". Individual rules in a rule-set are created to ensure adherence with specific functional and manufacturing producibility requirements. Common rule entries, for example, could include requirements governing PCB signal trace width and width between traces, or the distance between a punched hole and a formed bend on a sheetmetal chassis part. Rule evaluation results are then outputted, with specific design features being 'graded' for adherence to each rule. Typic...