3 research outputs found
Recommended from our members
Development of 3D Bit-Map-Based CAD and Its Application to Hydraulic Pump Model Fabrication
A novel 3D bit-map-based CAD has been developed. This program, named CellCAD,
relies on techniques which provides easy manipulation of huge sized 3D bit-map, poly-triangle
and 2D bit-map data. It can be attached to various kinds of additional plug-in processors to
extend its functions and to customize it highly for broad applications. CellCAD can be applied
in fields using computed tomography digitizers and/or layering fabricators. The authors applied
CellCAD to hydraulic pump model fabrication. This paper reports the basic design concept and
implementation techniques of CellCAD from the viewpoint of design engineering, and also
introduces the methods and results of an actual CellCAD application.Mechanical Engineerin
Recommended from our members
Development of Reverse Engineering System for Machine Engineering Using 3D Bit-Map Data
In this paper, the authors describe a reverse engineering system, named BitCAT, for machine
engineering using 3D bit-map data obtained from CT digitizers. BitCAT can compose B-Rep CAD
models by fitting parametric primitives, such as flat planes and cylinders, onto 3D bit-map surfaces.
To find boundaries of the primitives effectively, a novel interactive “growing surface method” is
developed and applied in the system. BitCAT is also provided with a method to determine
geometric constraints between the primitives during composition processes. BitCAT can make
very useful CAD models for manipulation and NC machining, because they are properly attached
with geometrical features. A demonstration verifies the faculty and usefulness of the system.Mechanical Engineerin