• Title/Summary/Keyword: Cutting part

Search Result 640, Processing Time 0.025 seconds

A Study on Detection of Lane and Displacement of Obstacle for AGV using Vision System (비전시스템을 이용한 자율주행량의 차선내 차량의 변위 검출에 관한 연구)

  • Lee, Jin-Woo;Choi, Sung-Uk;Lee, Chang-Hoon;Lee, Yung-Jin;Lee, Kwon-Soon
    • Proceedings of the KIEE Conference
    • /
    • 2001.07d
    • /
    • pp.2202-2205
    • /
    • 2001
  • This paper is composed of two parts. One is image preprocessing part to measure the condition of the lane and vehicle. This finds the information of lines using RGB ratio cutting algorithm, the edge detection and Hough transform. The other obtains the situation of other vehicles using the image processing and viewport. At first, 2 dimension image information derived from vision sensor is interpreted to the 3 dimension information by the angle and position of the CCD camera. Through these processes, if vehicle knows the driving conditions which are lane angle, distance error and real position of other vehicles, we should calculate the reference steering angle by steering controller.

  • PDF

Analysis of Working Factors for Improvement of Surface Roughness on High Speed End-Milling (엔드밀 고속 가공시 표면정도 향상을 위한 가공인자의 영향 분석)

  • 배효준;박흥식
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.21 no.6
    • /
    • pp.52-59
    • /
    • 2004
  • Recently the high speed end-milling processing is demanded the high-precise technique with good surface roughness and rapid time in aircraft, automobile part and molding industry. The working factors of high speed end-milling has an effect on surface roughness of cutting surface. Therefore this study was carried out to analyze the working factors to get the optimum surface roughness by design of experiment. From this study, surface roughness have an much effect according to priority on distance of cut, feed rate, revolution of spindle and depth of cut. By design of experiment, it is effectively represented shape characteristics of surface roughness in high speed end-milling. And determination($R^2$) coefficient of regression equation had a satisfactory reliability of 76.3% and regression equation of surface roughness is made by regression analysis.

A Study on the Book ${\ulcorner}Buinpilji{\lrcorner}$ ("부인필지(夫人必知)"의 조리과학적 고찰)

  • Lee, Hyo-Gee;Cha, Gyung-Hee
    • Journal of the Korean Society of Food Culture
    • /
    • v.11 no.3
    • /
    • pp.369-384
    • /
    • 1996
  • The Buinpilji is a book of food and clothes which was published in 1915 by Binghugak, Lee. The food part of Buinpilji is as follows: (1) The staple food are 2 kinds of Bab, Juk, and Guksoo. (2) The side dishes are 7 kinds of Kimchi, 4 kinds of Tang and Marunchan, 3 kinds of Jim, Jockgall, and Po, 2 kinds of Namul, Jon, Kui, and Jockpyun, and 1 kinds of Son, Shinsonro, Pokkum, Hoe, and Sundae. (3) There are also 10 kinds of Dock, 13 kinds of Kwajungryu, and 8 kinds of Umchungryu. (4) There are 14 different kinds of wine. (5) For seasoning there are 6 kinds of soybean sauce and oils and 1 kinds of vinegar. (6) There are 177 ways of preparing the ingredient 18 kinds of cutting terms, 22 heating terms. 29 expressions of taste can be found in the book.

  • PDF

Development of swiver joint on hydraulic machine (유압시험기 swivel joint의 개발)

  • Shin, H.G.;Kim, H.Y.;Bang, H.I.;Kim, S.B.;Kim, T.Y.
    • Journal of the Korean Society of Mechanical Technology
    • /
    • v.13 no.1
    • /
    • pp.89-94
    • /
    • 2011
  • The swivel joint is an important part in hydraulic machine. The analysis on the material was made using the EDAX method to localize the swivel joint. Also, the modeling and design drawing were finalized with application of 3 dimensional measurement and structure analysis. The prototype product based on design drawing was made with cutting and grinding process. No abnormalities were found in the prototype product through the durability test and measurement. The localized swivel joint with light weight, price reduction and diversification was developed in this study.

A Study on the Productivity Analysis of Eco-friendly Road Cutter (친환경 도로 커팅기계의 생산성 분석에 관한 연구)

  • Kim, Kyong-Hoon;Kim, Kyoon-Tai;Jun, Young-Hun;Ok, Chi-Yeol
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2019.11a
    • /
    • pp.106-107
    • /
    • 2019
  • Recently, maintenance of old facilities has emerged as a major issue. In particular, the demand for road cutting and excavation is increasing due to the aging of underground facilities such as water supply, sewage and city gas. In addition, the development of eco-friendly equipment is required due to the environmental problems of noise and dust. Therefore, this study intends to analyze the performance in terms of productivity of the eco-friendly road cutter developed as part of the development of eco-friendly equipment, and to derive improvements.

  • PDF

Basic Research for Construction Standard Unit Price and BIM library Linkage (표준시장단가 및 BIM 라이브러리 연계 활용에 관한 기초연구)

  • Jin, Zheng-xun;Baek, Seung-Ho
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2021.05a
    • /
    • pp.251-252
    • /
    • 2021
  • With the recent emergence of the 4th Industrial Revolution, the government is promoting the development of smart construction technology and institutional improvement through various policies to induce cutting-edge and technological innovation in the construction industry. As part of such smart construction technology, the application of BIM is being activated, and related regulations and guidelines are constantly being supplemented. In relation to BIM, there are many studies on the fields of library, design standards etc., but research on specific unit price utilization and unit price DB construction for calculating construction cost is insufficient. Therefore, in this study, a basic study was conducted on the linkage of the construction standard market unit price and the BIM library. Based on the basic research conducted in the future, we intend to establish specific standards for calculating BIM-based construction costs.

  • PDF

Conservation of the Seosanmaaesamjonbulsang (Rock-carved Triad Buddha in Seosan), Korea (서산 용현리 마애여래삼존상의 보존처리)

  • Min, Won Geun;Jong, Hee Su;Yang, Hee Jae
    • 보존과학연구
    • /
    • s.35
    • /
    • pp.73-86
    • /
    • 2014
  • The Seosanmaaesamjonbulsang (national treasure 84) is carved has a quite developed tectonic line in a precipitous wall of stratified rock to the vertical and horizontal directions. The main buddha and the left part of it have got the biological weathering and the efflorescence has been detected on the shoulder part of the right buddha. It has been caused by the raindrops from upper rock after the dismantling of the protection shelter in 2007. Two proper measures have been taken in order to reduce the weathering and protect it from some damages. The one is removing the contaminant by dry/wet cleaning not to get any damage on the rock. The other is the isolation by the construction of a new waterway used L-30 on the upper part of the rock not to contaminate the surface of Rock-carved triad buddha with the raindrops from upper rock. Moreover, the sunlight for buddha has been increased and good ventilation has been made by cutting down the trees around the Rock-carved triad buddha.

  • PDF

A Comparative Study on the Sewing Teaching of 'Tight Skirts' in Teaching Materials of Clothes Configuration (의복구성 교재에 나타난 타이트스커트 봉제 방법에 관한 비교 연구)

  • Kim, Sun-Young;Choi, Young-Soon
    • Journal of the Korean Society of Costume
    • /
    • v.56 no.8 s.108
    • /
    • pp.113-122
    • /
    • 2006
  • In this study, about forty teaching materials have been analyzed in order to examine tight skirt sewing methodtreated in basic process in a college and a fashion related educational institution. The study objects limited with a belt, back centered zipper, and back double slits on a tight skirt, and used fifteen suitable teaching materials in this study. The first study result appeared that every single teaching material suggested the different way of wick adhesion which is used in zipper slit, back slit, and belt part when the skit has been manufactured in order to do a form of clothes well. Secondly, it is the case of a back slit part used for the purpose of both functionality of action and decoration, and it is the section which varies a sewing and cutting way according to seam room width of a back middle seam. However, the majority of teaching materials appeared by being selecting the way how it had cut an inseam of the back center by the both upper part of back slit. Finally, the result showed that it mentioned mainly only both sided zipper sewing method if it seems to be easy to treat the majority in a basic process even though use of a console zipper Is general on a zipper sowing way recently for several years. Also, two forms are used in the belt manufacturing, and they are based with a waist line. However, the teaching materials that were used in this study presented only a manufacture way of the straight line on the waist belt.

Yield and Bioactive Component on Different Compost Amounts and Cultural Methods of Saururus chinensis $B_{AILL}$ (퇴비 시용량과 재배방법에 따른 삼백초의 수량 및 약리성분 함량 차이)

  • Lee, Seong-Tae;Lee, Young-Han;Choi, Yong-Jo;Lee, Yong-Ho;Cho, Ju-Sik;Heo, Jong-Soo
    • Korean Journal of Medicinal Crop Science
    • /
    • v.9 no.3
    • /
    • pp.220-224
    • /
    • 2001
  • To obtain the basic information for commercial process and high quality production of Saururus chinensis, the yield and the contents of available component were determined at different compost application amounts and cultural methods. Fresh weight of aerial part was increased by increasing of the compost application amounts. The contents of quercetin, quercitrin and tannin were the highest in the compost 2,000kg/10a. Fresh weight of aerial part at different cutting times was no difference between one harvesting/year and two harvesting/year in S. chinensis. On occasion of two harvesting/year, the contents of component was more collected on July 16 than collected on October 16. Fresh weight of aerial part was less in the field than in the greenhouse culture method, but the contents of quercetin, quercitrin and tannin were more in the field than in the greenhouse culture method.

  • PDF

A Study of the Changes in Types of Justaucorps for French Men, and Pattern making from the End of the 17th Century to the End of the 18th Century (17세기말기-18세기말 프랑스 남자 쥐스또꼬르 유형변화와 패턴제작 연구)

  • Kim, Yang-Hee
    • Journal of the Korean Society of Costume
    • /
    • v.59 no.8
    • /
    • pp.49-65
    • /
    • 2009
  • As basic materials in this research, 874 pieces of engraving that recorded the garment produced by diverse authors in the 17-18th century were collected among the collections of male and female garment in the engraving kept by National Library of France and 216 pieces of engraving were classified among them to observe justaucorps as stated in the materials. Since type of justaucorps in the 18th century can be classified by difference in shape and change through the above engraving materials in large quantity and the shape and composition can be compared and analyzed with other materials such as picture, stored garment, written materials without difficulty, the chronology can be composed by single type of justaucorps. Intending to understand the change in composition caused by type classification and pattern making as per analysis of type property of justaucorps, the men's upper garment in France in the 18th century. Checking change in design per from and materials, justaucorps of 1680-1700s was in silhouette where waist in the length above knee was adhered and slightly spread to lower part. In the type of 1710-1750s, waist adhered remarkably and many pleats were made under waist to produce volume of form that spread to lower part like skirt. In the type of 1760-1780s, straight silhouette was attached to whole body and end of front adjustment in slant line turns to rear part. The developmental aspect of construction can be checked by making pattern. Changing the cutting line of body plate to smoothly connect section and to try to adhere to the body, the development of simpler and delicate pattern production technique was confirmed.