• Journal of the Society of Naval Architects of Korea
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• v.46 no.6
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• pp.622-630
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• 2009

This paper deals with the automation techniques of ship assembly drawing generation, which help the designer to reduce the man-hour for completing the drawings, and improve the quality of the drawing for the given time. The automation techniques are necessary for the reasons of economical efficiency and improve communication between the designers and shop-makers. The overlap-avoidance algorithm of this paper maximizes the readability of the drawings using the optimization techniques and the heuristic rules, especially for the ship assembly field.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.600-603
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• 2000

In the high carbon steel wire drawing process, the wire temperature increases as the drawing speed is faster in order to increase the production rate in the shop floor. The rapid temperature rise causes the wire fracture in the dry wire drawing process. So, in this paper, the isothermal pass schedule program, which includes the calculation method of wire temperature at each pass, is proposed to prevent the wire fracture due to the temperature rise. Using the isothermal pass schedule program, it is newly proposed the pass schedule design system that prevents the cup-cone defects, improves the elongation of the final products and assures further deformation. As a result, the temperature rise of the wire was decreased and the production rate of the final product is remarkably grown up according to the increase of the final drawing speed than that of the conventional process. Also, the proposed pass schedule design system could give a useful information to the process designer who would design the high carbon steel wire drawing process.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2004.11a
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• pp.249-254
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• 2004

The pressing of car body parts is one of the most important sheet metal drawing processes. The corrosion protection oil applied by the steel mills plays a part in every sheet metal forming operation and also makes up the largest proportion of lubricants used. The idea to combine the corrosion protection properties of a corrosion preventive oil with the lubricity of a drawing oil lead to the development of the Anticorit prelubes. Applied at the finishing lines of the steel mills, they finally serve as lubricant in the press shops. A prerequisite for the suitability of a prelube-type oil is the absolute compatibility with all single processes from the coil to the Body in White. The use of prelubes in steel mills reduces the number and quantity of spot lubricants for additional press shop oiling dramatically. But their true benefits can only be fully achieved if the compatibility principle is applied throughout the manufacturing chain. Therefore, modem prelubes systems are modular, even different viscosities can be part of the same concept. This results in a far-reaching multifunctionality of the Anticorit prelube system for all applications.

• 월간 기계설비
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• no.11 s.220
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• pp.44-47
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• 2008

많은 난관을 극복하고 조기착공에 성공한 후에, 우선적으로 고려할 사항은 주공정(Crtical Path) 을 관리하는 것이다. 주공정(critical Path)의 초기 작업에 필요한 자재, 장비, 인원의 준비를 재점검하고 하도급추진을 하는 한편, 계약서상의 요구조건, 승인사항에 미흡한 점이 없는지를 검토하고 보완한다. 계약서상의 요구사항을 미비하거나 무시했을 경우, 반드시 그에 상응하는 경제적 대가를 치루어야 한다는 것을 명심해야 한다. 시공을 하기 위해서는 자재승인 후 작업도면(Working Drawing/ Construction Drawing/ Shop Drawing)의 승인을 받고, 작업방법(Method Statement)을 제출하고, 설명화 Presentation) 및 시험시공(Demonstration 또는 Mockup)을 거쳐 감리자의 시공허락을 받아야 하며 각종 Test를 통해 품질관리를 실행해야 한다. 시공지는 시방서에서 요구하는 품질이 보장되는 범위 내에서, 최대한 공기를 단축할 수 있도록 공사초기부터 노력을 해야 하며, 공사의 모든 과정에서 항상 claim 여부, 공기내 준공, 하자 Zero, 최단 시일 내에 최대의 기성취하에 역점을 두고, 이에 장애요인을 해결하는 것으로 공사를 진행해야 한다.

• Journal of the Korea Institute of Building Construction
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• v.3 no.2
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• pp.111-118
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• 2003

Steel frame construction is divided into subsidiary materials with column, beam, girder and bracing. After these are processed in factory for using installing in construction field. These prefabricated furniture is very important in accordance with design drawing about processing and prefabricating. In the case of design process using information transmission in blueprint, omission of material number, processing measure and finishing material, or discordance of each structure drawing and selecting incongruent structural material generated an error in the process of design. These error caused delaying time and increasing cost and increasing safety accident in the steel-structure work operating process. therefore, design process should consider problem of operating process.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.1424-1428
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• 2005

This paper describes a dedicated three-dimensional CAD system for design of drawing dies for automotive body panels. Since solid die models are useful not only for simulations for design verification, but also for NC tool path generation to machine dies and their Styrofoam patterns, 3-D CAD systems have been introduced in the tooling shop of automotive manufacturers. However, the work to build solid models requires a lot of time and effort if the designer uses only the general modeling capabilities of commercial 3-D CAD systems. To solve this problem, we customized a 3-D CAD system for the drawing die design. The system provides not only 3-D design capabilities, but also standard part libraries to enhance design productivity. By introducing this system, the drawing dies can be designed more rapidly in the 3-D space, and their solid data can be directly transferred to CAM tools for NC tool path generation and simulation tools for virtual manufacturing

• Journal of Fashion Business
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• v.15 no.2
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• pp.131-144
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• 2011

The purpose of this study is to propose 3D art make-up design process by reproducing real objects through preliminary digital drawing with Photoshop (Photo Shop CS4.0, Adobe, USA) and using special make-up that has never been done previously, and produce creative problem solving plan to make concrete expanding thoughts and ideas. As for this study method, this study was composed of preliminary study, literature study by book examination and positive study on design process that performed preparatory work and reproduced real objects. Real case study by art make-up design process can improve effective design expressing ability by utilizing special make-up, diversify techniques, extend expression areas by materials, and create unique design. In addition, preliminary work by digital drawing, a process to predict real object work in advance, could reduce time and cost while improving work skill for work production, raise design accuracy and make easy the modification of idea. This study is anticipated to activate digital make-up by various digital techniques including Photoshop.

• Journal of the Society of Naval Architects of Korea
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• v.56 no.1
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• pp.66-74
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• 2019

In the field of shipbuilding design, the use of 3D CAD is becoming commonplace, and most of the large shipyards are conducting 3D design. However at the production site, workers are still working on 2D drawings rather than 3D models. This tendency is even worse in small-scale shipyards and block manufacturing shops. Particularly, in a manufacturing shop that is engaged in the outsourcing of blocks, it may not be possible to provide 3D model. However, the demand for 3D models in the production field is steadily increasing. Therefore, it would be helpful if 3D model could be generated from a 2D drawing. In this paper, we propose a method to extract template and unfolded surface shape information from shell template offset drawing using computer vision technology. Also a 3D surface model was reconstructed and visualized from the extracted information. The result of this study is thought to be helpful in the work environment where 3D model information can not be obtained.

• Journal of The Korean Society of Integrative Medicine
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• v.9 no.2
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• pp.165-172
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• 2021

Purpose : This study was conducted to find out the effect on the activity of trunk and lower limbs muscles during abdominal drawing-in bridging exercises by verbal cue on the unstable supporting surface after pelvic rearward sloping taping for trunk stabilization movement. Methods : The study subjects were recruited by using the on-campus bulletin boards for healthy adult males and females in their 20s attending K University in Changwon-city, South Gyeongsang Province. The subjects were 30 persons (15 males and 15 females) who agreed to the study purpose in accordance with the criteria for selection and exclusion. Results : The results were obtained by measuring the muscle activity of the trunk and lower limbs during abdominal drawing-in bridging exercises by verbal cue on the unstable supporting surface after pelvic fixed tapping. The effects on erector spinae and hamstring muscles was statistically significantly lower (p<.05), it was confirmed that there were no statistically significant differences between the multifidus and gluteus maximus muscle (p>.05). Conclusion : Through this study, it was found that the excessive flexion of the waist was significantly reduced from erector spinalis and hamstring muscle after abdominal drawing-in bridging exercises by verbal cue on the unstable supporting surface after pelvic rearward sloping tapping compared to the general bridging exercises.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.10
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• pp.5243-5250
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• 2013

BIM(Building Information Modeling) enables 3D model-base management for all information produced by construction project during its life cycle. Also as a national policy, BIM has been institutionalized as design criteria. But, on the matter of 2D drawing using BIM software (Revit Architecture), it has been recognized as difficult to realize the same quality drawing drawn by CAD. The purpose of this study is verifying the possibility of printable design drawing implemented by BIM software at the same quality of 2D shop drawing drawn by 2D CAD. Through the analysis of basic design elements of 3D BIM software and 2D CAD software, with the case of partial cross sectional drawing which is most faithful representation of the basic design elements, this study find out that the 3D BIM software can produce the same quality 2D printable drawing utilizing its implicit function.