Reverse Engineering Applied to the Teaching of Computer Aided Manufacturing

2017 ◽  
Vol 903 ◽  
pp. 120-127 ◽  
Author(s):  
Elena María Beamud González ◽  
Pedro Jose Núñez López ◽  
Eustaquio García Plaza ◽  
David Rodríguez Salgado ◽  
Alfonso González González ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
Computer Aided Design ◽  
Measurement Techniques ◽  
Three Dimensional ◽  
Training Programme ◽  
Dimensional Model ◽  
Cnc Machine ◽  
Three Dimensional Model ◽  
Computer Aided Manufacturing ◽  
Computer Aided

One of the main shortcomings of individualized training in the use of computer aided design (CAD), and computer aided manufacturing (CAM) tools is that students lack a sound and broad understanding of the type of tools, and their specific and integrated applications in industrial manufacturing. This study aimed to design an integrated curricular training programme in computer aided tools for the design and manufacture of mechanical components based on reverse engineering techniques. By using real products that students can see and touch, a scanned copy is obtained for subsequent reconstruction into a virtual three-dimensional model using the software for optimizing the point cloud, meshing, and creating both the surface and solid. Once the virtual three-dimensional model has been obtained, it is exported to a solid modelling CAD (3D-CAD) software for modification according to the geometrical requirements. The next step is for students to manufacture a component using rapid prototyping techniques, which allow them to visualize, analyse, and inspect a component to optimize its design. The use of computer aided manufacturing software enables students to design and plan machining operations virtually to obtain a computer numeric control (CNC) program for the manufacture of a component with a CNC machine tool. Finally, students perform a quality control of the component by employing a range of measurement techniques. This training program is integrated into the subjects of the mechanical engineering degree, where students can work with these tools in line with an intergraded curriculum.

SAMMTB: A Computer Aided Design Tool for Ergonomists

1986 ◽  
Vol 30 (7) ◽  
pp. 694-698 ◽  
Author(s):  
Keith Case ◽  
J. Mark Porter ◽  
Maurice C. Bonney
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Design Tool ◽  
Three Dimensions ◽  
Design System ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Computer Aided ◽  
Aided Design ◽  
Machine Interaction

Sammie (System for Aiding Man-Machine Interaction Evaluation) is a Computer Aided Design system which provides facilities for ergonomics/human factors evaluation at the earliest stage in the design process. Workplaces, for example the interior of a vehicle or a supermarket checkout, are modelled in three dimensions and presented on a computer graphics screen. A range of techniques are available for interactively modifying the design and for an ergonomie evaluation at each stage by the use of a three-dimensional model of the human operator. This paper describes the facilities available and illustrates the system's usefulness by reference to examples taken from recent design assignments.

Computer Aided Design of a Pattern and Risers for Casting Processes: Part 1

1991 ◽  
Vol 113 (1) ◽  
pp. 59-66
Author(s):  
Jong Cheon Park ◽  
Kunwoo Lee
Keyword(s):  
Computer Aided Design ◽  
Unique Feature ◽  
Three Dimensional ◽  
Automatic Design ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
High Quality ◽  
Commercial Practice ◽  
Interactive Computer Program ◽  
Aided Design

An interactive computer program has been developed to design a pattern and risers for the production of castings of high quality. In our system, the user models the shape of a final product by using the system’s modeling capability, a pattern is generated in a three-dimensional model by eliminating the holes and adding shrinkage allowances and drafts, the proper riser is created automatically, and they are united together to yield a three-dimensional model of this portion of a mold assembly. The mold can be completed after the runners and the gating systems are designed, modeled, and united which will be described in Part 2 of this work. The unique feature of this work is a realization of an automatic design of the pattern and risers by integrating the modeling capabilities and the design equations used in commercial practice.

A New Proposal for Three-Dimensional Positioning of the Chin Using a Single Computer-Aided Design/Computer-Aided Manufacturing Surgical Guide

2018 ◽  
Vol 29 (7) ◽  
pp. 1963-1964 ◽  
Author(s):  
Pedro Jorge Cavalcante Costa ◽  
Maurício Silva Demétrio ◽  
Pedro Thalles Bernardo Carvalho Nogueira ◽  
Larissa Raposo Rodrigues ◽  
Paulo Domingos Ribeiro Júnior
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Aided Manufacturing ◽  
Surgical Guide ◽  
Computer Aided ◽  
Aided Design

Reverse Engineering Physical Models Employing Wrap-Around B-Spline Surfaces and Quadrics

1996 ◽  
Vol 210 (2) ◽  
pp. 147-157 ◽  
Author(s):  
D J Weir ◽  
M J Milroy ◽  
C Bradley ◽  
G W Vickers
Keyword(s):  
Reverse Engineering ◽  
Computer Aided Design ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Surface Fitting ◽  
Physical Models ◽  
Scanning System ◽  
Cad Model ◽  
Three Dimensional Model ◽  
B Spline

Reverse engineering involves digitizing a three-dimensional model or part, by means of a tactile or non-contact optical sensor, converting the data to a CAD (computer aided design) database description and manufacturing by CNC (computer numerical controlled) machines. This paper demonstrates an effective approach to the reverse engineering of physical models by employing a three-dimensional laser scanning system in conjunction with surface-fitting software developed by the authors. Accurate surface data are collected by the laser scanner and then input to the surface-fitting software. Surface entities such as B-spline and quadric functions are employed to build the CAD model. The CAD model is compatible with popular design and manufacturing software packages. A telephone receiver is used to illustrate the efficiency of the process.

scholarly journals Machine Actuated Craft

2021 ◽  
Author(s):  
◽  
Jonathan William Murdoch
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Cnc Machining ◽  
Cnc Machine ◽  
Machining Processes ◽  
Design Representation ◽  
Computer Aided ◽  
Production Techniques ◽  
Simple Movement ◽  
Aided Design

<p>Throughout history the use of scale representations has been important in the process of creating architecture. In recent times the introduction of computer-aided design (CAD) has significantly altered traditional methods of conceptual design representation, mainly through a shift from the physical to the virtual. The aim of the research is to explore the relationship between computer aided manufacturing (CAM) and the methods for extracting and producing qualities of a conceptual nature from computer and numerically controlled (CNC) machine, and how this could advance conceptual creativity formulating in buildable form. The qualities that are inherently produced by CNC machining processes are then captured back into the three-dimensional environment (CAD), and then re-exported via CNC machining. The information that flows from the digital to the physical and then back again, creates new physical qualities that would not normally be produced, and allows for further investigation. Through the misrepresentation and reinterpretation of machine processes in this research, the output produces an object of an abstract nature created through identifying extraordinary expressions of tool paths. This 1:1 abstract object expresses qualities of craft produced by the CNC machine and creates a new form of craft that can be compared to the expression of the traditional craftsman and their trade. This simple movement between scales and formats begins to generate new design processes that in turn translate the conceptual expression of the object into a buildable form. On final completion of the object this project has proven that CAM conceptual creativity can be translated and formulated into built form. A key observation of this research is that identifying CAM production techniques can produce abstract representation through a new means of design representation.</p>

Computer-Aided Design/Computer-Aided Manufacturing Milling of Allogeneic Blocks Following Three-Dimensional Maxillofacial Graft Planning

2019 ◽  
Vol 30 (5) ◽  
pp. e413-e415 ◽  
Author(s):  
Ivan Onone Gialain ◽  
Otavio Henrique Pinhata-Baptista ◽  
Marcelo Gusmão Paraíso Cavalcanti ◽  
Arthur Rodriguez Gonzalez Cortes
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Aided Design
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