Study on Three-Dimensional Curved-Surface Machining Using Industrial Articulated Robot

2011 ◽  
Vol 35 (9) ◽  
pp. 1071-1076
Author(s):  
Chang-Wook Jung ◽  
Tae-Yang Noh
Keyword(s):  
Three Dimensional ◽  
Curved Surface ◽  
Surface Machining ◽  
Articulated Robot

scholarly journals Different activation signatures in the primary sensorimotor and higher-level regions for haptic three-dimensional curved surface exploration

NeuroImage ◽  
2021 ◽  
Vol 231 ◽  
pp. 117754
Author(s):  
Jiajia Yang ◽  
Peter J. Molfese ◽  
Yinghua Yu ◽  
Daniel A. Handwerker ◽  
Gang Chen ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Curved Surface ◽  
Surface Exploration

Curved surface machining through circular arc interpolation

1992 ◽  
Vol 19 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G.W. Vickers ◽  
C. Bradley
Keyword(s):  
Curved Surface ◽  
Circular Arc ◽  
Surface Machining

Study on Feed Offset in Elliptical Vibration Cutting

2014 ◽  
Vol 490-491 ◽  
pp. 600-606
Author(s):  
Jie Qiong Lin ◽  
Jin Guo Han ◽  
Dan Jing ◽  
Xian Jing
Keyword(s):  
Surface Topography ◽  
Surface Quality ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Curved Surface ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Tool Edge

Elliptical vibration cutting (EVC) process and three dimensional cutting surfaces are analyzed in this paper to understand the formation of surface topography. The model of EVC surface topography is established based on curved surface remove function under the assumption that the tool edge is sharp enough. And simulation analysis of surface topography is conducted with different feed offset ratios. Results indicate that RMS change with feed offset ratios λ. The range of RMS is larger when feed offset ratio ranges from both 0 to 0.4 and 0.6 to 1, while the range is smaller when feed offset ratio changes from 0.4 to 0.6. Whats more, RMS reaches the minimum when feed offset ratio is 0.5. The present research provides some references for reducing the height of vibration ripples and improving EVC surface quality.

Motion Analysis and Simulation of Complex Curved Surface WEDM System

2008 ◽  
Vol 392-394 ◽  
pp. 151-155
Author(s):  
Tong Wang ◽  
K. Jiang ◽  
Shu Qiang Xie ◽  
Shuang Shuang Hao
Keyword(s):  
Electrical Discharge Machining ◽  
Three Dimensional ◽  
Simulation Method ◽  
Curved Surface ◽  
Polar Coordinates ◽  
Curved Surfaces ◽  
Machining Quality ◽  
Motion Parameters ◽  
Dimensional Graph ◽  
Analysis Of Motion

In this paper, the characteristics and general laws of cutting complex curved surface by wire electrical discharge machining (WEDM) system are studied. Based on analysis of motion parameters the universal mathematical model of polar coordinates is derived. Moreover, the simulation of WEDM system is introduced, which is carried out by using language Visual C++ and the three dimensional graph software OpenGL.This simulation method is helpful in improving machining quality and productivity of complex curved surfaces, and is fundation for establishing CAD/CAPP/CAM technology in WEDM.

How to Eliminate Machining Marks on the Surface of Impeller Blades by CimatronE CAM

2014 ◽  
Vol 628 ◽  
pp. 205-208
Author(s):  
Gui Jie Fan
Keyword(s):  
Comparative Analysis ◽  
Three Dimensional ◽  
Numerical Control ◽  
Surface Structures ◽  
Curved Surface ◽  
Finish Machining ◽  
Cad Cam ◽  
Machining Strategies ◽  
Cam Software ◽  
Control Tool

The impeller blades are hard to machine for its complex and curved surface structures. It is almost impossible to manufacture the blades by manual programming on Numerical Control Tool. Now, the program almost is completed by the three-dimensional CAD/ CAM software, such as UG, Pro/Engineer, CimatronE which have a lot of machining strategies suitable for a wide variety of parts. However, the result is not perfect if you choose improper strategies. Even more, machining marks will be left on the parts’ surface. This paper takes the impeller for an example and gives the solutions for eliminating machining marks left on the impeller blades’ surface through a comparative analysis on the 3-axis finish machining strategies in CimatronE.

Three-Dimensional Comparison between the Palatal Forms in Infants with Complete Unilateral Cleft Lip, Alveolus, and Palate (UCLP) with and without Hotz's Plate

1996 ◽  
Vol 33 (3) ◽  
pp. 245-251 ◽  
Author(s):  
Katsuaki Mishima ◽  
Toshio Sugahara ◽  
Yoshihide Mori ◽  
Masayoshi Sakuda
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Three Dimensional ◽  
Curved Surface ◽  
Measuring System ◽  
Stages Of Growth

A three-dimensional measuring system was developed to analyze changes in palatal forms of UCLP infants. This system quantified the change of the curved surface on a palate by automatically superimposing two wireframe models obtained from casts at different stages of growth. It also analyzed the curvature of the palatal surface. This system was used to study the palates of 20 infants with unilateral cleft lip and palate (UCLP), from the first to fourth months after birth (12 with Hotz's plate and 8 without, selected at random). Both major and lesser maxillary segments without Hotz's plate remained anterior and lateral although those with Hotz's plate moved mesially during the fourth month after birth. In addition, the degrees of curvature on the palatal surfaces with Hotz's plate were less than those without Hotz's plate.

scholarly journals Modeling technology of curved surface development for puffer fish

2020 ◽  
Vol 12 (4) ◽  
pp. 168781402091602
Author(s):  
Honggen Zhou ◽  
Jie Cui ◽  
Guizhong Tian ◽  
Yesheng Zhu ◽  
Changfeng Jia
Keyword(s):  
Three Dimensional ◽  
Least Square ◽  
Curved Surface ◽  
B Spline ◽  
Implicit Equation ◽  
Moving Least Square ◽  
Average Value ◽  
Modeling Technology ◽  
Surface Development ◽  
Puffer Fish

The drag reduction mechanism of puffer epidermis was closely related to its real geometry. In order to solve the modeling problem of epidermal spines on the puffer surface, a modeling method for the expansion of puffer shape was proposed. The three-dimensional scanning and non-uniform rational B-spline surface modeling technology was used to reconstruct the puffer model. According to the curvature characteristics, the surface mathematical equations including exponential, logarithmic, and sinusoidal functions were established based on the multinomial function. The surface was generated by a mathematical equation, and the surface was divided into several non-uniform rational B-spline patches according to curvature. After discretization, the point cloud Gaussian curvature and average value were calculated based on the implicit equation of moving least square surface, and whether the surface is approximately extensible or not was judged. Finally, the puffer surface was divided into 46 curved patches. In this article, the surface expansion algorithm gave priority to ensure the area unchanged, and four feature surfaces were selected according to the epidermal spines arrangement of the puffer surface. The results showed that the technique can simply and efficiently unfold the curved surface of the puffer fish, thus the mapping relationship between the epidermal spines on the surface and the plane was determined, which established a foundation for the accurate arrangement and modeling of the epidermal spines on the surface.

Automation of Chamfering by an Industrial Robot; Development of a System with Reference to Tool Application Direction

2001 ◽  
Vol 13 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Naoki Asakawa ◽  
◽  
Yoshio Mizumoto ◽  
Yoshimi Takeuchi ◽  
Keyword(s):  
Complex Shape ◽  
Tool Path ◽  
Industrial Robot ◽  
Force Sensor ◽  
Experimental Results ◽  
Curved Surface ◽  
Linear Actuators ◽  
Articulated Robot

The study deals with the automatic chamfering for a workpiece with complex shape on the basis of CAD data, using an industrial robot. Tool path, pushing direction and force at the each chamfering point are calculated from CAD data both to keep chamfering conditions stable and to keep a larger range in space by use of a developed system, named TADRPECS, for workpieces with complex shape. As a chamfering tool, a rotary-bar type tool consisting of a force sensor and two linear actuators are mounted to the arm of an articulated robot. From experimental results, the system is found to be effective to chamfer edges of a hole on a workpiece with free curved surface.

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