Computer aided automatic digitizing of engineering drawings

2005 ◽  
Author(s):  
W. Pferd ◽  
K. Ramachandran
Keyword(s):  
Computer Aided ◽  
Engineering Drawings

Enhancing CAD For The Forensic Engineer

1984 ◽  
Vol 2 (1) ◽  
Author(s):  
Lindley Manning
Keyword(s):  
Computer Graphics ◽  
Photographic Evidence ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Forensic Engineering ◽  
Selection Of

The purpose of this paper is to inform the Academy of an application of computer graphics that has been successful in the court room and which has the potential for extension to many related needs of the forensic engineer. An additional purpose is to examine the possibility of cooperation within the Academy to make a broad database and selection of equipment available to the members. Attentive engineers of today are well aware of the growing use and impact of computer-aided drafting, design and analysis in a wide variety of industries. In our field, we are aware of large analysis programs which have been used with success in court, for example the CRASH series. The authors forensic engineering partnership has developed ways to utilize the more widely available drafting systems to inexpensively fill the gap between photographic evidence and full engineering drawings. We have also found that CAD drawings appear to have more impact in court than hand done drawings. In some cases

Computer Aided Programming for Boring Counterbore Holes

2012 ◽  
Vol 562-564 ◽  
pp. 861-864
Author(s):  
Li Wei Liu ◽  
Xian Zhong Zhao
Keyword(s):  
Cutting Parameters ◽  
Computer Aided ◽  
Process System ◽  
Engineering Drawings ◽  
The Given

In this paper, a method of CAP(Computer Aided Programming) for boring counterbore holes was presented. According to the engineering drawings and the given diameter of holes, the position of holes can be determined automatically. Based on the type of tools, the depth of counterbore holes, the depth of pre-manufactured holes and cutting parameters, the program of boring was generated automatically. Following the program, the process system can complete the rough boring, the finish boring, dwelling or without dwelling at downhole.

scholarly journals Jet Engine Computer Aided Tube Design System

1980 ◽  
Author(s):  
D. C. Jones ◽  
C. D. Head ◽  
John Crupi
Keyword(s):  
Data Base ◽  
Vibration Analysis ◽  
Host Computer ◽  
Design System ◽  
Jet Engine ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Whitney Aircraft

At Pratt & Whitney Aircraft a system to design tubing, produce final engineering drawings and establish data for manufacturing was developed that effectively integrates man and computer. A “wire tube” defined on a wooden mockup is fed to a host computer to perform stress and vibration analysis and check clearance to other tubes and components. The tube is then retrieved from a data base, maintained on the host, by the Computervision system to produce final drawings. The data base is then available to manufacturing to drive an automatic tube bender.

Integrated CADCAM and Automotive Die and Mould Manufacture

1989 ◽  
Vol 203 (2) ◽  
pp. 137-144 ◽  
Author(s):  
A R Johnson
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Fully Integrated ◽  
Automotive Components ◽  
Component Design ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Mould Manufacture ◽  
Doubly Curved ◽  
Aided Design

Many automotive components are produced in very large quantities using manufacturing processes such as casting, moulding and forging. These processes require tooling which usually has geometrical complexities such as doubly curved surfaces, fillet curves, split lines and draft angles. Traditionally the component design is conveyed to the toolmaker for manufacture of the tooling, using conventional engineering drawings. The paper shows how tooling and component problems can arise due to the inability of conventional two-dimensional engineering drawings to unambiguously define complex three-dimensional shapes. Modern fully integrated computer aided design and computer aided manufacturing (CADCAM) systems may be used to overcome these problems. This is achieved by producing numerically controlled machining information to manufacture the tooling directly from the computer generated component design, thus eliminating the ambiguities associated with conventional engineering drawings. The use of a fully integrated CADCAM system for the design and manufacture of automotive components and tooling is described, and the technical and economic advantages gained from its use are detailed.

Identifying the Fundamental Geometric Attributes of Design: An Application of Distinctive Feature Theory

1991 ◽  
Author(s):  
John D. Chovan ◽  
Manjula B. Waldron
Keyword(s):  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Mechanical Design ◽  
Verbal Protocols ◽  
Distinctive Features ◽  
Human Machine Interfaces ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Aided Design ◽  
Feature Theory

Abstract The identification of a basal set of geometric attributes used by designers to describe mechanical engineering design can provide useful information on the manner in which designers communicate information about mechanical design. In this paper, geometric attributes were identified from descriptions provided by five mechanical designers while they read and analyzed thirteen mechanical engineering drawings of varying complexity. From the verbal protocols, the geometric attributes were identified and then subject to a cluster analysis. A set of fifteen geometric attributes were identified as distinctive features since they were minimally sufficient to cluster the set of 61 design features contained in the drawings. These distinctive features provide insights into how designers reason about mechanical engineering drawings, which may be useful when designing human-machine interfaces for computer-aided design.

Augmented Technical Drawings: A Novel Technique for Natural Interactive Visualization of Computer-Aided Design Models

2012 ◽  
Vol 12 (2) ◽  
Author(s):  
Michele Fiorentino ◽  
Antonio E. Uva ◽  
Giuseppe Monno ◽  
Rafael Radkowski
Keyword(s):  
Computer Aided Design ◽  
Interactive Visualization ◽  
Data Retrieval ◽  
3D Models ◽  
Video Camera ◽  
Tangible Interfaces ◽  
Cad System ◽  
Computer Aided ◽  
Engineering Drawings ◽  
Aided Design

Engineering 3D models become complex that paper drawings representation and monitor/mouse navigation on a computer-aided design (CAD) system is difficult and also frustrating. We present a novel interface paradigm for natural interactive visualization. It incorporates augmented reality enhanced engineering drawings and natural and tangible interfaces. We embedded ID markers on technical drawings to provide CAD data retrieval and tangible navigation. A user gets access to the CAD navigation functions using the drawing itself as a tangible device. In addition, CAD functions are triggered with gestures recognized by a video camera. We performed a pilot test assessment with industrial engineers. The results demonstrate the feasibility and the effectiveness of these techniques.

Computer-aided methods for 3-D visualization of serial sections and thick biological specimens

1992 ◽  
Vol 50 (2) ◽  
pp. 1060-1061
Author(s):  
Mark Ellisman ◽  
Maryann Martone ◽  
Gabriel Soto ◽  
Eleizer Masliah ◽  
David Hessler ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Three Dimensional ◽  
Neuritic Plaque ◽  
Dimensional Structure ◽  
Data Sets ◽  
Molecular Physiology ◽  
Research Activities ◽  
Computer Aided ◽  
Dimensional Reconstruction

Structurally-oriented biologists examine cells, tissues, organelles and macromolecules in order to gain insight into cellular and molecular physiology by relating structure to function. The understanding of these structures can be greatly enhanced by the use of techniques for the visualization and quantitative analysis of three-dimensional structure. Three projects from current research activities will be presented in order to illustrate both the present capabilities of computer aided techniques as well as their limitations and future possibilities.The first project concerns the three-dimensional reconstruction of the neuritic plaques found in the brains of patients with Alzheimer's disease. We have developed a software package “Synu” for investigation of 3D data sets which has been used in conjunction with laser confocal light microscopy to study the structure of the neuritic plaque. Tissue sections of autopsy samples from patients with Alzheimer's disease were double-labeled for tau, a cytoskeletal marker for abnormal neurites, and synaptophysin, a marker of presynaptic terminals.

Three-Dimensional Subcellular Organization of Hepatocytes in Intact Liver: Simultaneous Visualization of Cytoskeletal and Membrane Markers by Confocal Microscopy

1996 ◽  
Vol 54 ◽  
pp. 288-289
Author(s):  
Greg V. Martin ◽  
Ann L. Hubbard
Keyword(s):  
Three Dimensional ◽  
Integral Membrane Proteins ◽  
Polarized Secretion ◽  
Microscope Images ◽  
Computer Aided ◽  
Intracellular Organelles ◽  
Cytoskeletal Elements ◽  
Simultaneous Visualization

The microtubule (MT) cytoskeleton is necessary for many of the polarized functions of hepatocytes. Among the functions dependent on the MT-based cytoskeleton are polarized secretion of proteins, delivery of endocytosed material to lysosomes, and transcytosis of integral plasma membrane (PM) proteins. Although microtubules have been shown to be crucial to the establishment and maintenance of functional and structural polarization in the hepatocyte, little is known about the architecture of the hepatocyte MT cytoskeleton in vivo, particularly with regard to its relationship to PM domains and membranous organelles. Using an in situ extraction technique that preserves both microtubules and cellular membranes, we have developed a protocol for immunofluorescent co-localization of cytoskeletal elements and integral membrane proteins within 20 µm cryosections of fixed rat liver. Computer-aided 3D reconstruction of multi-spectral confocal microscope images was used to visualize the spatial relationships among the MT cytoskeleton, PM domains and intracellular organelles.

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