• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.10a
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• pp.358-361
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• 2009

The increasing interest in the surface modification technology by the plasma transferred arc overlaying process in the material processing is placing stringent demands on the manufacturing techniques and performance requirements, and the manufacture employs the high quality and efficiency plasma transferred arc overlaying technology. This paper covers recent technical trends of plasma transferred arc overlaying technology including the COMPENDEX DB analysis.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.05a
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• pp.620-623
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• 2002

Spinning has been used widely for the manufacture of hollow parts with rotational symmetry. With developing CNC machine, CNC machine center can be applied to the spinning processes. In this paper, a study on the development of CNC spinning technology without mandrel is carried out. The deforming process of the spinning process was simulated by DEFORM 3D to give basic design data.

• Transactions of Materials Processing
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• v.9 no.5
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• pp.504-511
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• 2000

Hydroforming is a forming process enabling circular metal tubes to be produced in complex cross sections along curved axial paths. This forming process is widely used to manufacture parts in automotive industry. This paper presents bending and forming results to following angle of weld line positions. These compare to good bending, bad bending and without weld line model case. And then this result of after forming compare to each forming cases. The purpose of this paper is found that adaptive weld line position for bended final shape.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.04a
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• pp.161-165
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• 1996

Recently, with a great interest in micromachine, it is more and more important to promote the way of manufacturing micromachine. The silicon process or the LIGA process was the main way to manufacture micromachine in the past. Because these processing method was 2.5-dimensional, there was the limit in processing perfect three-dimensional micromachine. In this study, we developed the rapid prototyping system for micromachine and tested its property. We also realized .mu. m - order processing and three-dimensional structure processing. The results showed the possibility of manufacturing micromachine with the rapid prototyping system

• 제어로봇시스템학회:학술대회논문집
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• 1992.10a
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• pp.1084-1089
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• 1992

Process planning is a key feature that an intelligent CAD/CAM system should possess. In this paper, we address the problem of determinig process configuration to manufacture the free surfaces. For analyzing the surface, the method of surface subdivision is used. The developed algorithm evaluates the processability of the given surface by applying the three/four/five-axes procedures sequentially. To illustrate and test the developed algorithm, numerical simulations are presented.

• Design & Manufacturing
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• v.9 no.3
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• pp.34-40
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• 2015

In the study, Three-dimensional drawing parts for conformal cooling circuit cavity & core and their 3D Metal parts using DMLS(Direct MetalLaser Sintering) and NC integrated machining center were showned. For conformal cooling circuit cavity and core parts, I discussed its practicality to DMLS multiple machinins process introducing general manufacturing process and comparing with them.

• Proceedings of the IEEK Conference
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• 2003.07e
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• pp.2375-2378
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• 2003

In manufacture of printed circuit boards, one important issue is precisely to measure the three-dimensional shape of the solder paste silk-screened prior to direct surface mounting of chips. This paper presents the 3D shape reconstruction of solder paste using the optical triangulation method based on structured light or slit beam and the measurement algorithm for height, volume. area, and coplanarity on component pads from the 3D range image. Futhermore, statistical process control function is incorporated for process capability analysis.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.7 no.4
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• pp.24-30
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• 2008

The laminate IPMC actuator have been developed with a commercial Nafion film and platinum electrodes. Equivalent beam and equivalent bimorph beam models for IPMC(Ionic Polymer-Metal Composite) actuators are described. By using a beam equation with estimated physical properities and actuation displacements of a cantilevered IPMC actuator are estimated. And Finite element analysis(FEA) was done by ANSYS.

• Proceedings of the Safety Management and Science Conference
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• 2006.11a
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• pp.201-205
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• 2006

By analysis of the processes before and after applying RFID in warehouse management and the improvement the RFID system brings to warehouse management based on model of warehouse management in manufacture enterprises, a set of standard process after applying RFID system in SCM members at different phases is designed in this paper.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.14 no.24
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• pp.193-198
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• 1991

Is this paper the selection of a set of process plans is considered for a flexible manufacturing systems. This problem arises in the metal working industry when numerical controlled(N/C) machines are used to manufacture parts. In this paper a new concept to reduce the size of problem is proposed. A corresponding Integer programming model is formulated. The model formulated is to minimize corresponding manufacturing cost and minimize the number of tools and auxiliary devices such as fixtures, grippers, and feeders.