Digital Laser Welding System for Automobile Side Panel

Park, Hong Seok; Choi, Hung-Won

doi:10.5772/9863

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…Current automobile manufacturing requires a reduction of weight not only to increase performance and decrease fuel consumption but also to reduce manufacturing cost and strengthen competitiveness (Kim and Yoon, 2007;Park and Lee, 2007). Saving limited metallic natural resources is also a trend in sustainable manufacturing.…”

Section: Introductionmentioning

confidence: 98%

Development of a fiber-reinforced plastic armrest frame for weight-reduced automobiles

Park

Dang

2011

Int.J Automot. Technol.

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This paper presents the design optimization process of a short fiber-reinforced plastic armrest frame to minimize its weight by replacing the steel frame with a plastic frame. The analysis was carried out with the equivalent mechanical model and design of experiment (DOE) method. Instead of considering the whole structure, it is divided into three simpler regions to reduce the complexity of the problem through examining its structural characteristics and load conditions. The maximum stress and deflection of the regions that carry the normal load are calculated by the analytical mathematical form derived from an equivalent model. The other regions loaded by contact stress are handled by FEM (finite element method), the DOE method, and the RSM (response surface model). To optimize the design variables in both cases, the object functions derived from these calculations are solved with a CAE (computer aided engineering) tool. This method clearly shows the mechanical and mathematical representation of structural optimization and reduces the computing costs. After design optimization, the weight of the optimum plastic-based armrest frame is reduced by about 18% compared to the initial design of a plastic frame and is decreased by 50% in comparison with the steel frame. Some prototypical armrest frames were also made by injection molding and tested. The research results fulfilled all of the design requirements.

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Section: Introductionmentioning

confidence: 98%

Development of a fiber-reinforced plastic armrest frame for weight-reduced automobiles

Park

Dang

2011

Int.J Automot. Technol.

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“…In addition to the economic gain, RLW eliminates the most important limitation of earlier joining techniques, the accessibility issues between the welding gun and the workpiece. This, in turn, removes many earlier constraints on workpiece design, an advantage that can be turned easily into parts with reduced weight, yet higher stiffness (Park and Choi 2010).…”

Section: Introductionmentioning

confidence: 98%

Integrated task sequencing and path planning for robotic remote laser welding

Kovács

2015

International Journal of Production Research

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This paper investigates the problem of integrated task sequencing and path planning in Remote Laser Welding (RLW). It is shown that finding the appropriate order of welding tasks is crucial for exploiting the efficiency of this new joining technology, and this can be achieved only if the robot path is considered already at the time of sequencing. For modelling the problem, a novel extension of the well-know Travelling Salesman Problem with neighbourhoods and durative visits, denoted as TSP-ND, is introduced. Basic properties of this problem are formally proven, and a GRASP meta-heuristic algorithm is proposed for solving it. Extensive computational experiments demonstrate that the novel approach solves efficiently industrially relevant problems, and it achieves substantial improvement in cycle time compared to the single earlier approach in the literature dedicated to RLW, as well as compared to a decomposition approach to solving the TSP-ND model

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“…This contactless technology eliminates the most important bottleneck of earlier joining techniques, the accessibility issues between the welding gun and the workpiece, by welding from a distant point using a laser beam. This results in up to 80% lower cycle times, reduced operating costs, and higher freedom in part design (Park and Choi 2010). Nevertheless, the successful application of RLW also requires the elaboration of novel methods for process planning that are able to capture all important features of the new technology.…”

Section: Introductionmentioning

confidence: 99%

Task Sequencing for Remote Laser Welding in the Automotive Industry

Kovács

2013

ICAPS

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This paper proposes a new model and algorithm for task sequencing in remote laser welding in the automotive industry. It is shown that task sequencing (in which order to weld the seams) is strongly related to path planning (how the welding robot should move), therefore the two problems must be solved together, in an integrated way. The problem is modeled as a direct product of a traveling salesman and a path planning problem, and a tabu search algorithm is proposed for solving it. Computational experiments show that the proposed method leads to a substantial reduction in the cycle time of the welding operation compared to an earlier approach.

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Digital Laser Welding System for Automobile Side Panel

Cited by 6 publications

References 6 publications

Development of a fiber-reinforced plastic armrest frame for weight-reduced automobiles

Development of a fiber-reinforced plastic armrest frame for weight-reduced automobiles

Integrated task sequencing and path planning for robotic remote laser welding

Task Sequencing for Remote Laser Welding in the Automotive Industry

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