• Title/Summary/Keyword: Finishing

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Improvement of Form Accuracy in Curved Dies and Molds Using Compensation of Finishing Tool (연마 공구의 압력 보정에 의한 곡면 금형의 형상 정밀도 향상)

  • 임동재;정해도;안중환;안대균
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.05a
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    • pp.866-869
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    • 2000
  • The finishing process for die is an important process because it has influence on final quality of products. And it is difficult to automatize finishing process so that the process has depended on expert's skill until now. However, recently a study on development of die automatic finishing machine has been progressed, and actually this machine is applied to fabrication of die. But die automatic finishing machine has the problems such as low supply rate and high machine price. In this paper 3-axis machine was applied to the die finishing. And to improve form accuracy of die finishing path was regenerated. The finishing path considered tilting of finishing tool. and variation of machining force with contacting point between finishing and workpiece.

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High Efficient Finishing Process for Press Dies by Cast Iron Bonded Diamond Pellet (1) (주철본드 다이아몬드 팰렛에 의한 프레스 금형의 고능률 연마가공 (1))

  • Hwang, Chan-Hae;Yoo, Kee-Tae;Jeong, Hae-Do;Ahn, Dae-Kyun
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.3 s.96
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    • pp.84-90
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    • 1999
  • The finishing process for dies and molds is directly related to finished surface quality, but many parts of process depend on human labor which needs much time and value. So automatic finishing machine has been produced for dies and molds, and applied widely for finishing process. Conventionally finishing machine has applied resin bonded finishing pad as a tool, but the removal ability of pad decreases greatly as finishing process goes on. In the finishing mechanism for dies and molds, finishing process is affected severely by cutting process, so can be divided into removing cusp and smoothing surface process. So, this study investigated the application of cast iron bonded diamond pellet for press dies, which is considered to have better characteristics than the other metal bonded pellets. The finishing characteristics were compared the between finishing pellet and pad. And finishing performance was appraised as the several cutting surfaces.

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A Study on Improvement of Finishing Accuracy Using 3-Axis Machine for Curved Surface Dies (3축 가공기를 이용한 곡면 금형의 연마 정밀도 향상에 관한 연구)

  • Lim, Dong-Jae;Lee, Sang-Jik;Jeong, Hae-Do
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.3
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    • pp.61-67
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    • 2001
  • The finishing process for die is an important process because it has influence on final quality of products. Recently s study on development of 5-axis die automated finishing machine has been progressed. But die must be moved from the cutting machine to the die automated finishing machine. So manufacturing cost and time increase and machining error occurs by transfer. So, in this study, a 3-axis machining center was applied to die finishing. Because cutting tool can be changed to finishing tool by ATC, both of cutting and finishing process are possible on the machine. However, this application results in the decrease of finishing for the improvement of form accuracy. So this study focused on the generation of finishing tool path suitable to 3-axis die finishing for the improvement of form accuracy. The form accuracy evaluation is performed by the measurement of removal depth using a stylus profilometer. From the result, it is confirmed that form accuracy was improved less than 2$\mu$m of removal depth error.

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A Study on Finishing Technique of woodworking Furniture - Focus on Oil Finishing - (일품공예가구 마감기법에 관한 연구 - 오일마감재를 중심으로 -)

  • Kim, Young-Joo
    • Journal of the Korea Furniture Society
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    • v.21 no.5
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    • pp.354-366
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    • 2010
  • The modern unique woodworking furniture has been made in earnest from 50 years ago. Some oil from nut such as soybean, walnut and perilla, which is usually used in our common life, has been used as finishing material for the unique woodworking furniture. Recently, woodworking studio business among the whole furniture industry has grown gradually and many woodworkers uses various kinds of imported wood finishing oil. Many woodworkers use the imported finishing oil in the old ways instead of understanding the characters of the various kind of oil and It causes some serious problems in furniture finishing process. Therefore, this study aims at taking theoretical approach in wood finishing oil and presenting correct usage in understanding the types and characters of oil. Resultingly the new method of oil finishing for wood is suggested and this suggestion is to guide woodworkers into the right usage of wood finishing oil.

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A Study on the Analysis of Fabric Trend Terms and Finishing - Women's Wear Fabrics for Spring/Summer Seasons for 10 Years(1995~2004) - (소재 트렌드를 표현하는 소재 가공 분석 - 10년간(1995~2004) 봄.여름용 여성복 소재를 중심으로 -)

  • Kim, Dong-Woon;Park, Chung-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.31 no.2 s.161
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    • pp.217-224
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    • 2007
  • This paper investigated spring/summer fabric trends of women's and analyzed the correlation between the fabric trends and finishing for 10 years (1995 S/S-2004 S/S). Fabric trend terms were selected from 5 fashion journals and were grouped by hierarchical cluster analysis using SPSS 12.0 statistical package. Also, finishing terms were selected and analyzed by frequency. The results showed that 13 representative fabric trend terms were clean, functional, lustrous, compact, rubbery, comfortable, chic, romantic, decorative, natural, fluid, textured, and ethnic trend. In terms of fabric finishing, 12 representative finishing were selected such as coating, calendaring, wrinkle finishing, decorative finishing, quilting, and washing. Finally, in respect of the analysis of fabric trends and finishing, washing and embroidery were used to represent ethnic trends and textured fabric was closely correlated wrinkle and decorative finishing. Fluid fabrics were expressed via wrinkle and coating and washing and wrinkle were used for natural feeling. Decorative fabric was expressed by embroidery and coating and decorative finishing were frequently used to show romantic and chic fabric. Also comfortable fabrics were correlated with easy care and rubbery, compact, lustrous, and clean fabrics were correlated with coating.

Development of Magnetic Abrasive Jet Machining System for Precision Internal Polishing of Circular Tubes (원형관의 내면정밀가공용 순환식 자기입자분사가공 시스템 개발)

  • 강윤희
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 1995.10a
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    • pp.24-29
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    • 1995
  • A recently developed finishing process using rotating magnetic field is known to be very efficient for the finishing of parts such as vacuum tube, sanitary tube, etc., which are difficult to be finished by the conventional finishing methods as they are generally curbed tubes. But, the finishing system using rotating magnetic field have the defect that is the cross section of workpiece only circle because of internal rotating tool. Therefore, new finishing process of the workpieces which cross section are not circle is important and required. magnetic abrasive jet machining is a new concept finishing process. It is the precision internal finishing method using working fluid mixed with magnetic abrasives, which is jetted into the internal surface of tube. And magnetic poles are equipped on external surface of tube. In this study new concept finishing process or, magnetic abrasive jet machining system was developed. machining condition was predicted using simulation and some characteristics of the finishing process was analyzed.

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Research about Image Evaluations from Jeans' Finishing -Focus on Undergraduate Students in Los Angeles of the USA- (진즈[Jeans]의 가공[Finishing]에 따른 이미지 평가 연구 -미국 L. A. 거주 대학생을 중심으로-)

  • Lee, Mi-Yeon
    • Journal of the Korean Society of Costume
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    • v.56 no.7 s.107
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    • pp.18-32
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    • 2006
  • The objectives of this research were to identify the differences of image evaluations by perceiver's gender, majors and jeans' finishing and to examine image characteristics that have an influence on attractiveness and preferences of jeans' finishing. The subjects are 96 undergraduate students in Los Angeles of the USA. Elegant and refined images had a significant effort on perceiver's gender, so men tended to highly evaluate jeans as elegant and refined images than did women. Soft images were recognized differently by perceiver's major, so non-specialists in design tended to highly evaluate jeans as soft images than did specialists in design. In finishing, shattered wash was evaluated as the most individual, attractive, energetic, and splendid images, and stone wash was evaluated as the most ordinary, unattractive, and plain images. Light images tended to have interaction effects by majors and finishing. Specialists in design did not perceive differences between light images from finishing well, but non-specialists in design perceived that stone wash finishing's image is lighter than indigo blue finishing's image. Sociable images had interaction effects by perceiver's gender, majors and jeans' finishing, and especially non-specialists in men estimated that shattered wash has the lowest sociable images in finishing. According to evaluations about finishing images of ladies' jeans, men tended to be attracted by splendid images, and women tended to be attracted by sexy images. In addition, both men and women were commonly attracted by feminine images, so the study found that feminine images is important image for developing jeans for ladies. According to evaluations about finishing images of ladies' jeans, men preferred sexy and natural images to comfortable and energetic images, and women preferred sexy and neat images. Female undergraduate students of the USA tended to be attracted by sexy images, and we found that actually they consider buying jeans with such images.

A Cost-Based Interior Information Management for an Apartment Housing Project (원가기반의 공동주택 마감재 정보관리 방안 연구)

  • Lee, Hoon-Ku;Lee, Yoon-Sun;Moon, Hyuk;Kim, Jae-Jun
    • Korean Journal of Construction Engineering and Management
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    • v.10 no.5
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    • pp.76-84
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    • 2009
  • Korea's construction industry experienced no difficulty managing the costs of finishing work items in the apartment housing field thanks to the uniform specification and the standardized costs of finishing work items. Finishing work items have continuously become more high class and differentiated, which has caused the costs of finishing work items to rise. This study identified problems with the cost management when planning finishing work items and choosing their alternatives based on the current process applied to the planning stage of finishing work items. It also found problems with the information management of finishing work items including design, cost, and work information that took place in bulk. Based on the identified problems, the design, cost and work information of finishing work items was integrated so that they could management the costs and information when planning finishing work items and selecting their alternatives. Then a cost-based information management process was suggested for finishing work items by improving each of the project cost management elements. Finally, an information model for finishing work items was built by studying the ways to integrate the information hierarchy and library of finishing work items.

Study on Surface Roughness due to WA-BF-Fe Grain for Internal Magnet-abrasive Finishing Apparatus of STS 304 Pipe (STS 304 파이프 내면의 자기연마법에 있어서 WA-BF-Fe 자성입자가 표면거칠기에 미치는 영향)

  • 김용수;정윤중;김희남;김순채;배재만
    • Journal of the Korean Society of Safety
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    • v.16 no.3
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    • pp.35-40
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    • 2001
  • An internal finishing process applying Magnetic Abrasive Finishing (MAF) was proposed to produce smooth inner surfaces of tubes at a high rate. Since this process uses the tube rotation system, it has been considered applicable only to tubes which are rotatable at high speeds. Here development of the stainless tube(STS 304) rotation system to extend the scope of the application of the internal finishing process applying MAF was made. By the stainless tube(STS 304) rotation system, the abrasive magnetically attracted by the poles is rotated along the inner surface of the tube by magnetic force together with fixed poles, finishing the inner surface of the tube. The main results obtained are as follows : 1) The magnet abrasive finishing minimized influence due to external force because non-contact finishing, 2) The profile of surface roughness decreased very good in 11.4m/min range because abrasive size and speed, 3) The profile of surface roughness by flux density decreased in finishing speed 28m/min, 4) The profile of surface roughness by fled rate decreased in 0.16mm/rev and 0.18mm/rev.

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ANALYSIS AND IMPROVEMENT OF FINISHING WORK PROCESS FOR COST MANAGEMENT (FOCUSED ON INDOOR FINISHING WORK OF APARTMENT)

  • Hoon-Ku Lee;Yoon-sun Lee;Ja-Young Yoon;Jae-Jun Kim
    • International conference on construction engineering and project management
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    • 2007.03a
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    • pp.711-720
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    • 2007
  • Apartment housing in the Korean domestic construction industry has had various and high-quality finishing work since the enforcement of price deregulation in 1998. Before the enforcement of price deregulation, feasibility studies of housing projects have not had particular difficulties as uniform description of finishing work items were reflected and finishing work cost also was equalized. However, the recent distinction of finishing work based on the same floor plan brings about project cost variation, along with many effects on construction management due to project cost increment. Accordingly, this paper suggests the improved plan of cost management to control the feasibility study result consistently during the life cycle of a project through an analysis based on cost management phase due to cost blackout, appearing at the commencement of a project, cost gradation caused by high-quality finishing work item, and cost reduction due to the degradation of finishing work after analysis of current apartment construction process focused on finishing work using the IDEF process analysis technique.

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