Journal
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
Volume 27, Issue 3, Pages 641-645Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.rcim.2010.11.002
Keywords
Rapid prototyping; Metal arc gas; Bead profile model; Overlapping model
Funding
- National Natural Science Foundation of China [50735006]
- Major State Basic Research Development Program of China [2007CB607601]
Ask authors/readers for more resources
As a deposition technology, robotic metal active gas (MAC) welding has shown new promises for rapid prototyping (RP) of metallic parts. During the process of forming metal parts with the robotic MAC welding technology, the sectional geometry of single-pass bead and the overlap of the adjacent beads have critical effects on the dimensional accuracy and quality of metal parts. In this work, Canny edge detection of the robotic MAC beads was carried out and the data were smoothed with a Gaussian filter and fitted with Gaussian function, logistic function, parabola function and sine function, respectively. In addition, a mathematical model of bead section was developed to analyze the bead geometry. Based on surfacing of equivalent area method, the concept of overlapping coefficient and optimum-overlapping coefficient was put forward, and calculated model of overlapping was analyzed. Optimal overlapping coefficient was calculated to be 63.66% under experimental condition. The conclusion is that the edge detection of bead section with Canny operator is continuous and distinct, and as compared with Gaussian function, logistic function and parabola function, sine function has higher accuracy to fit the measured data, and surfacing of equivalent area method shows to be rational and feasible by the experiments. (c) 2010 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available