scholarly journals Study on Curved Surface Fitting of Countersink Based on Point Cloud

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 106464-106470
Author(s):  
Jiming Sa ◽  
Hanwen Gu ◽  
Yilun An ◽  
Yijie Luo ◽  
Zhushanying Zhang
Keyword(s):  
Point Cloud ◽  
Surface Fitting ◽  
Curved 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

Reverse Modeling of Vehicle Suspension Control Arm

2013 ◽  
Vol 427-429 ◽  
pp. 1183-1186
Author(s):  
Hai Bo Zhang ◽  
Ying Chang ◽  
Rui Jun Zhang ◽  
Hong Yuan Fan
Keyword(s):  
Point Cloud ◽  
Production Cost ◽  
3D Model ◽  
Modeling Method ◽  
Curved Surface ◽  
Vehicle Suspension ◽  
Point Cloud Data ◽  
Cloud Data ◽  
Suspension Control ◽  
Curved Surface Parts

Reverse modeling of vehicle suspension control arm is studied. Firstly, the data of vehicle suspension control arm is acquired. Secondly, the scanning point cloud data is processed. Then 3D model of vehicle suspension control arm is reconstructed. Finally, models deviation is analyzed to find out the deficiencies and to improve the accuracy of the model. Reverse modeling based on CATIA can make up the shortage of traditional modeling method and solve the problem of gaining the data of complex curved surface parts. It also can shorten the innovation and improvement cycle of the vehicle suspension control arm and reduce the production cost and enhance enterprise competitiveness.

scholarly journals General Curved Surface Fitting and Calculation of Flow Along Arbitrarily Twisted Stream Surface

1985 ◽  
Author(s):  
Wu Wenquan ◽  
Yu Haoyu
Keyword(s):  
Stream Function ◽  
Engineering Application ◽  
Small Deformation ◽  
Surface Fitting ◽  
Curved Surface ◽  
Coordinate Surface ◽  
Stream Surface ◽  
Curvilinear Coordinate ◽  
Orthogonal Curvilinear Coordinate System ◽  
Stream Lines

This paper consists of two parts. (1) General curved surface fitting and grid refining. A method of fitting a set of given discrete points on several stream lines to give a smooth and arbitraily twisted stream surface was developed. Based upon the small deformation theory for thin plate, the Kirchhoff’s Equation was solved and twofold transformations were incorporated. The first step is the transformation from physical surface into computational surface and the second is affine transformation. The accuracy of the result is about 0.004% and the CPU time needed is reasonable for engineering application. Then the refined computational grid and the calculation for the geometrical quantities of the grid are carried out on the fitted surface. (2) Calculation of the flow along the fitted stream surface. Employing non-orthogonal curvilinear coordinate system, the fitted stream surface is selected as a coordinate surface, so that there are only two velocity components even when the stream surface is arbitrarily twisted, and it is very convenient to define the stream function. The general equation for the quasi-linear stream function governing the flow along the fitted stream surface was employed. This was solved with the method of direct decomposition of matrix. The numerical examples are also included in this paper. The present method can be used for S1 and S2 stream surfaces and other engineering calculations.

scholarly journals Discussion on Reverse Design of Components with Complex Curved Surface and Computer Numerical Control Machining

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Dapeng Fu ◽  
Xinyu Lv ◽  
Shuangyang Jiang
Keyword(s):  
Data Processing ◽  
Point Cloud ◽  
Tool Path ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Curved Surface ◽  
Surface Generation ◽  
Point Cloud Data ◽  
Numerical Control Machining ◽  
Cloud Data

Abstract: With the continuous development and advancement of science and technology, the work of tool path planning has received extensive attention. Among them, curved surface generation and data processing are the focus of management and design, which necessitate the full application of reverse design of complex curved surface components to complete numerical control processing, effective optimization and upgrading, integration the tasks of point cloud data collection and point cloud data processing to ensure that the corresponding computer numerical control machining model can exert its actual value. This paper briefly analyzes the basic principles of curved surface reconstruction as well as discusses the reverse design of complex curved components and the experimental processes and results that involved computer numerical control machining, which serves the purpose as reference only.

Investigation of Curved Surface Fitting Method in Sub-pixel Displacement Digital Speckle Correlation Measurement

2009 ◽  
Vol 46 (8) ◽  
pp. 72-75
Author(s):  
李新忠 Li Xinzhong ◽  
刘汇慧 Liu Huihui ◽  
甄志强 Zhen Zhiqiang ◽  
李立本 Li Liben ◽  
陈庆东 Chen Qingdong
Keyword(s):  
Surface Fitting ◽  
Correlation Measurement ◽  
Curved Surface ◽  
Speckle Correlation ◽  
Fitting Method ◽  
Digital Speckle ◽  
Digital Speckle Correlation

The Point Cloud Collection of the Incisor Teeth of Beaver and Re-Construction of its Curved Surface

2012 ◽  
Vol 426 ◽  
pp. 387-390
Author(s):  
Feng Xie ◽  
J. W. Zhao ◽  
F. Ju
Keyword(s):  
Mechanical Property ◽  
Point Cloud ◽  
State Of The Art ◽  
Cutting Tools ◽  
Three Dimensional ◽  
Evolutionary Process ◽  
Geometric Shape ◽  
Curved Surface ◽  
Surface Model ◽  
Dimensional Surface

The research of state-of-the-art bionics shows that teeth, claw and animal surface etc. of a lot of animals obtain perfect geometric shape and biologic-mechanical property after long evolutionary process. The paper was based on the bionic research of the incisor teeth of beaver. The point cloud of the incisor teeth was obtained by Reverse Engineering (RE) technology. And the curved surface of the incisor teeth was re-constructed by RE software to get its three-dimensional surface model. All of those research results will supply the base of bionic study to the optimization of the geometric shape and the mechanical property of cutting tools.

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