Computer-Aided Design of a Respirator Facepiece Model

Abstract

This paper describes the evaluation and acquisition of CAD/CAM technology required for the design and development of complex sculptured surfaces for molding rubber and elastomeric materials. Benchmark tests incorporating the complex 3-D geometry that such a design project must handle were performed with various systems vendors and a time-sharing system was chosen. Geometry was constructed using bi-parametric cubic patches and cutter paths were plotted over these surfaces. A post-processor has been prepared for a three-axis numerical control milling machine and a cavity cut to vacuum-form a thermoplastic rubber for a prototype. Keywords: Human factors engineering; Anthropometric data; CADD(Computer Aided Design and Drafting); French language; and Numerical code programming.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA164408

Entities

People

  • David J. Hidson

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Cyber

DTIC Thesaurus Topics

  • Boundaries
  • Computer Programming
  • Computer Programs
  • Computer-Aided Design
  • Computers
  • Database Management Systems
  • Databases
  • Geometric Forms
  • Geometry
  • Human Factors Engineering
  • Manufacturing
  • Milling Machines
  • National Security
  • Shape
  • Standards
  • Storage Tubes
  • Three Dimensional

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  • Computer Science.
  • Manufacturing Engineering.
  • Materials Science