General Tolerancing in Design Object Modeling.

Optical Design Tolerancing

David Hasenauer, CODE V Product Manager Introduction During the design of any optical system destined to be manufactured, it is critical to define a fabrication and assembly budget. This budget must consider any potential compensation that will be used during the manufacturing process to mitigate the performance degradation introduced by fabrication variations. It is important to specify the be...

Functional Tolerancing : A Design for Manufacturing Methodology

The problem addressed in this paper is the development of a physico-mathematical basis for mechanical tolerances. The lack of such a basis has fostered a decoupling of design (function) and manufacturing. The groundwork for a tolerancing methodology is laid by a model of profile errors, whose components are justified by physical reasoning and estimated using mathematical tools. The methodology ...

Object-Oriented Modeling and Design

Interoperability: linking design and tolerancing with metrology

On October 30, 2014 the American National Standards Institute (ANSI) approved QIF v 2.0 (Quality Information Framework, version 2.0) as an American National Standard. Subsequently in early 2016 QIF version 2.1 was approved. This paper describes how the QIF standard models the information necessary for quality workflow across the full metrology enterprise. After a brief description of the XML 'l...

Modeling Design Object Relationships in PEGASUS

One of the most important problems of database management systems for CAD applications is modeling design objects and the complex relationships among them. Design objects have versions and participate in the construction of other more complexdesign -objects. In this paper we describe the preliminary data model design of a database system for CAD applications, named " Pegasus. Our model is based...