REASERCH ON THE KEY-TECHNOLOGYIES OF COMPLEX SURFACE DIGITIZING RECONSTRUCTION IN REVERSE ENGINEERING

2003 ◽  
Vol 39 (04) ◽  
pp. 131 ◽  
Author(s):  
Congqian Qi
Keyword(s):  
Reverse Engineering ◽  
Complex Surface

Research Based on Reverse Engineering Technology of Complex Structure Product

2015 ◽  
Vol 741 ◽  
pp. 806-809
Author(s):  
Ai Qin Lin ◽  
Yong Xi He
Keyword(s):  
Reverse Engineering ◽  
Point Cloud ◽  
Complex Structure ◽  
Laser Scanner ◽  
Complex Surface ◽  
Curved Surface ◽  
Quality Model ◽  
High Quality ◽  
Engineering Technology ◽  
Working Principle

Introduced reverse engineering technology and working principle. Researched reverse design process of the complex curved surface "spider". The data were collected by means of multiple scanning measuring with laser scanner. Used Geomagic Studio software for date point cloud processed of complex curved surface. Used UG software for surface reconstruction designed. Product reduction and improvement of the design were finished rapidly and high quality. Model of spider was printed with rapid prototyping technology. Compared with physical, the model’s reliability and accuracy were verified by reverse engineering design.Keywords: complex surface; reverse engineering technology; UG; Geomagic Studio software

Computation and Simulation of 5-Axis Cutter Based on Scattered Point Cloud Data

2012 ◽  
Vol 602-604 ◽  
pp. 1740-1743
Author(s):  
Wen Hui Zhao ◽  
She Liu
Keyword(s):  
Reverse Engineering ◽  
Distance Function ◽  
Point Cloud ◽  
Complex Surface ◽  
Conjugate Problem ◽  
Local Feature ◽  
Conjugate Points ◽  
B Spline ◽  
Cloud Data ◽  
Cad Cam

The complex surface is modeled by triangular surface, B-spline or non-uniform rational B-spline first and then the planing of the cutter is followed in reverse engineering. But this require CAD/CAM software and operator’s experiene. Because of this，the research on direct NC cutter generation from point cloud have become the focus of research in reverse engineering. The normal，curvature，surface vary et al parameters are calculated by principle component analysis method and so on, which define the local feature of the surface hidden in the point cloud. Then，based on local feature，point cloud is simplified. It is proved that two points with minimal orientation-distance on a pair of smooth surfaces are conjugate points. Thus the conjugate problem between the tool surface and the part surface is converted into optimization process of orientation-distance function. The cutter trace and the cutter interference are achieved by local and global optization of the orientation-distance function.

Integration of Multi-View Data Based on Auxiliary Reference Plane

2010 ◽  
Vol 139-141 ◽  
pp. 1361-1364
Author(s):  
Ke Wei Lin ◽  
Xin Liu ◽  
Ming De Duan
Keyword(s):  
Reverse Engineering ◽  
Coordinate Measuring Machine ◽  
Complex Surface ◽  
Reference Plane ◽  
Scanning System ◽  
Practical Result ◽  
Laser Tracking ◽  
System A ◽  
Measuring Devices ◽  
Measuring Machine

The integration of multi-view data in the acquisition of complex surface is researched by using the CMM (coordinate measuring machine) and the laser tracking scanning system. A multi-view data integration method based on the auxiliary reference plane is presented. With the precise auxiliary reference plane, the data measured by the different measuring devices and measuring views are aligned and the accuracy is analyzed. If the error is controlled in a certain range, this method can satisfy the demands of the model and assembly. The problems of low-efficient and low-accuracy in the data fusion of complex surface during the reverse engineering are solved. Meanwhile, the advantages of the different measuring devices and measuring methods are developed. This method has been applied to the reverse engineering development for a motorcycle cover model. The practical result shows that this new method is feasible and efficient.

Integration of Multi-View Data Based on Auxiliary Reference Plane

2009 ◽  
Author(s):  
Mingde Duan ◽  
Xin Liu ◽  
Wei Ma ◽  
Jishun Li
Keyword(s):  
Reverse Engineering ◽  
Coordinate Measuring Machine ◽  
Complex Surface ◽  
Reference Plane ◽  
Scanning System ◽  
Practical Result ◽  
Laser Tracking ◽  
System A ◽  
Measuring Devices ◽  
Measuring Machine

The integration of multi-view data in the acquisition of complex surface is researched by using the CMM (coordinate measuring machine) and the laser tracking scanning system. A multi-view data integration method based on the auxiliary reference plane is presented. With the precise auxiliary reference plane, the data measured by the different measuring devices and measuring views are aligned. The problems of low-efficient and low-accuracy in the data fusion of complex surface during the reverse engineering are solved. Meanwhile, the advantages of the different measuring devices and measuring methods are developed. This method has been applied to the reverse engineering development for a motorcycle cover model. The practical result shows that this new method is feasible and efficient.

Reverse Engineering of Quadric Surfaces Employing Three-Dimensional Laser Scanning

1994 ◽  
Vol 208 (1) ◽  
pp. 21-28 ◽  
Author(s):  
C Bradley ◽  
G W Vickers ◽  
M Milroy
Keyword(s):  
Reverse Engineering ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Coordinate Measuring Machine ◽  
Complex Surface ◽  
Free Form ◽  
Surface Patches ◽  
Measuring Machine ◽  
Free Form Surfaces

A software package for the reverse engineering of surface forms commonly found in manufactured objects is presented. An object's surface is digitized using a three-dimensional, laser-based scanner that produces accurate and copious data files. Complex surface forms are reconstructed by interactively segmenting the multiple-surface patches, invoking the appropriate surface modelling routine and transferring the resulting surfaces to a CAD package via a standard IGES entity. Examples of the accuracy of the laser scanner data, and software algorithms for modelling planes, cylinders, cones and spheres, are presented by performing comparisons with results generated by a coordinate measuring machine. The paper concentrates on the novel software process to model the principal quadric forms; however, the program's capabilities do extend to free-form surfaces.

Design and Manufacturing of Complex Surface Impeller Based on RE

2011 ◽  
Vol 328-330 ◽  
pp. 619-623
Author(s):  
Zhi Yang Li ◽  
Ming Yu Huang ◽  
Hong Ju Hu ◽  
Hong Jun Ni ◽  
Yu Zhu ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
Three Dimensional ◽  
Complex Surface ◽  
Fixture Design ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Basic Principles ◽  
Nc Simulation ◽  
Design And Manufacturing ◽  
Manufacturing Problems

Based on the instance of collection the data of complex surface impeller and reconstruction the three-dimensional model, it describes the concepts and basic principles of Reverse Engineering, and discusses the entire process in detail, which are from the data of impeller collected, the impeller three-dimensional model re-Construction, fixture design to NC simulation machining. Solved the design and manufacturing problems of complex surface parts, which can not be solved by the conventional methods.

The Reverse Engineering and Rapid Prototyping Manufacturing Technology of Parts with Complex Surface

2011 ◽  
Vol 121-126 ◽  
pp. 3371-3375
Author(s):  
Ze Min Fu
Keyword(s):  
Rapid Prototyping ◽  
Reverse Engineering ◽  
Complex Surface ◽  
Measuring System ◽  
Concept Design ◽  
Combined Application ◽  
Complex Design ◽  
Triangular Bézier Surface ◽  
Part Surface ◽  
Rapid Prototyping Manufacturing

According to the combined application of the reverse technology and the rapid prototyping , which is necessary for the complex design and the concept design of part surface, the text firstly introduce the method of gathering reverse data by ATOS measuring system and the technology of blending triangular Bezier surface . Second, it analyses the optimized disposition of method of reverse data which is related to the technology of rapid prototyping . Third, the trial has been done about the interface files generated and linked the device of rapid prototyping and model processing trial.

New replica method with plasma polymerized film by glow discharge

1988 ◽  
Vol 46 ◽  
pp. 414-415
Author(s):  
A. Tanaka ◽  
M. Yamaguchi ◽  
T. Hirano
Keyword(s):  
Power Supply ◽  
Plasma Polymerization ◽  
Vacuum Chamber ◽  
Complex Surface ◽  
Replica Method ◽  
Metal Extraction ◽  
High Voltage Power Supply ◽  
Negative Glow ◽  
Hydrocarbon Gas ◽  
Hydrocarbon Molecules

The plasma polymerization replica method and its apparatus have been devised by Tanaka (1-3). We have published several reports on its application: surface replicas of biological and inorganic specimens, replicas of freeze-fractured tissues and metal-extraction replicas with immunocytochemical markers.The apparatus for plasma polymerization consists of a high voltage power supply, a vacuum chamber containing a hydrocarbon gas (naphthalene, methane, ethylene), and electrodes of an anode disk and a cathode of the specimen base. The surface replication by plasma polymerization in negative glow phase on the cathode was carried out by gassing at 0.05-0.1 Torr and glow discharging at 1.5-3 kV D.C. Ionized hydrocarbon molecules diffused into complex surface configurations and deposited as a three-dimensionally polymerized film of 1050 nm in thickness.The resulting film on the complex surface had uniform thickness and showed no granular texture. Since the film was chemically inert, resistant to heat and mecanically strong, it could be treated with almost any organic or inorganic solvents.

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