http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전사방식 광조형 시스템의 해상도 최적화를 통한 출력물의 정밀도 향상
김영흠(Yeong-Heum Kim),김규언(Kyu-Eon Kim),이치범(Chibum Lee) 한국생산제조학회 2015 한국생산제조학회지 Vol.24 No.6
Projection stereolithography is an additive manufacturing method that uses beam projection to cure the photo-reactive resin used. The light source of a crosssection layer-form illuminates photo-curable resin for building a threedimensional (3D) model. This method has high accuracy and a fast molding speed because the processing unit is a face instead of a dot. This study describes a Scalable Projection Stereolithography 3D Printing System for improving the accuracy of the stereolithography. In a conventional projection 3D printer, when printing a small sized model, many pixels are not used in the projection or curing. The proposed system solves this problem through an optical adjustment, and keeps using the original image as possible as filling the whole projection area. The experimental verification shows that the proposed system can maintain the highest level of precision regardless of the output size.
김규언(Kyu-Eon Kim),김영흠(Yeong-Heum Kim),이치범(Chibum Lee) 한국생산제조학회 2014 한국생산제조학회지 Vol.23 No.4
A control system for ultrasonic spray pyrolysis deposition was developed that can coat a large size glass panel with a transparent conductive oxide. It consists of several ultrasonic atomizer devices to cover a large area and a host computer for individually controlling the devices. The sub?controller in an ultrasonic atomizer device can adjust the flow rate of the atomized conductive oxide gas by setting the flow rate of the solution and regulating the level of the solution in the tank. To construct a feedback control loop for level regulation, a level sensor that utilized an infrared distance sensor and an electric circuit for adjusting the ultrasonic oscillator were developed. The host program was also developed, which can monitor and control the sub?controllers. A proportional-integral controller was developed for a simplified model, and its operation was verified through an experiment.
Cross Hole Type 비 연삭 밀링 인서트의 마모에 대한 연구
김택수(Taek-Su Kim),이상민(Sang-Min Lee),박휘근(Hwi-Keun Park),채승수(Seung-Su Chae),이충석(Choong-Seok Lee),김영흠(Yeong-Heum Kim),성욱중(Uk-Jung Seong),남기찬(Gi-Chan Nam),이종찬(Jong-Chan Lee) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
This paper reports some experimental results on the tool wears of non-ground cross hole type milling inserts. Six kinds of milling inserts were manufactured without using grinding process. Machining experiments were carried out to compare the tool wears of non-ground inserts with that of ground ones. The experimental results indicate that the tool wears of both ground and non-ground inserts are comparable.