• Title/Summary/Keyword: Precision machine

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High-Precision Slot-Die Coating Machine for Thin Films of Flexible Display (플렉시블 디스플레이용 박막 도포를 위한 초정밀 슬롯다이 코팅장비)

  • Choi, Young-Man;Lee, Seung-Hyun;Jo, Jeongdai
    • Journal of the Korean Society for Precision Engineering
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    • v.31 no.6
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    • pp.491-495
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    • 2014
  • We developed a compact high-precision slot-die coating machine for thin-film deposition on a flexible substrate. For smooth and precise coating, air-bearing and linear motor system were employed to minimize velocity ripple. The gap control mechanism is specially designed to have repeatability of gap between nozzle and substrate under 1 ${\mu}m$. Due to extremely precise gap control, the machine can coat thin-films down to 50 nm with $200mm{\times}100mm$ size. A thin film of Ag nano-particle ink is coated for demonstration.

Establishment Method of Optimum Grinding Conditions Considering with Machine Tool Characteristics (공작기계 특성을 고려한 최적연삭조건 설정)

  • 김건희;이재경;최창용
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.04a
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    • pp.8-13
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    • 1997
  • In order to utilize the information of well-known grinding data or grinding machine, a database needs to be designed by considering the delicate property of the machine tools for the high precision and quality of the demanding specification. Among the machine tools, machining conditions of the grinding are various and knowledge repeatance obtained form the grinding process are less credable.Therefore it is desirable for D/B, which is used to set the grinding conditions, to utilize the maximum machine tool capability. The present paper studied occurance limit of chatter vibration and burn considering the characteristics of machine tool. And also basic experiments were performed to establish optimum grinding canditions which can maximize the machining efficiency.

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A Study on the out-diameter measuring machine by the LVDT sensors (LVDT 센서를 이용한 외경 측정 방안에 대한 연구)

  • Hwang J.H.;Roh J.H.;Park Ki-Hong
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.291-292
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    • 2006
  • Currently A demand of high precision workpiece is increasing in industry. At present, roundness measuring machine using Air bearing, coordinate measuring machine that are used from measurement station. but these machines will not be able to apply to In-line process. because of like these machine's price are very expensive and measurement time is long. also, the complexity of conventional roundness measurement method based on fourier transform, it makes difficult to development analysis program. This work present new architecture of a Out-diameter measuring system fur analysis of roundness of product. In this system, the influence of table motion errors is minimize by using two LVDT sensor and knife edge contact tip. We are produce a test machine and make an experimenter on Out-diameter of test bearing. The measurement result compared with roundness measuring machine.

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Application of Electrical Linear Motors to Machine Tools (전기선형모터의 공작기계에의 적용)

  • 은인웅;정원지;이춘만;최영휴
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.450-453
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    • 2001
  • Linear motor is characterized by its high velocity, high acceleration and good positioning accuracy. In recent years, linear motor is often used as a fast feed mechanism for high-speed machine tools. For the effective application of linear motors to machine tools, many demands on machine conceptions must be fulfilled. In this paper, some important construction concepts such as bending deformation of machine table, frictional force on the linear guidance and thermal behavior of linear motors are presented.

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Machine monitoring for implementing a virtual machine (가상기계 구현을 위한 공작기계 모니터링)

  • 배완준;강무진
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.11a
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    • pp.311-315
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    • 2000
  • In thls paper, a remote machine monitoring system for a vimal machine is proposed. The monltonng system is one of the core functmns of a vimd machne that provides a modeling and simulation environment for machining processes and management of the machine life cycle. The proposed system contains the modules for investigating tool wear using neural network and web-based real time process monitoring. An example implementation for tool wear and machining status monitoring is illustrated

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Predictive Research into Desirable Features of Machine Tools in the Year 2015 and Beyond - Private Viewpoints and Assertion -

  • Yos
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.06a
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    • pp.1-18
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    • 2000
  • This paper describes firstly a prediction for desirable features of the machine tool in the year 2015 and beyond, and then delineates something definite in relation to some representative machine tools, which could be realised in very near future. The paper depicts furthermore another aspect of future machine tools, I. e., innovative structural designs. In addition, author asserts the importance of grass root-like knowledge, when predicting the desirable feature of machine tools future together with showing some evidences.

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Hybrid Machine with Open Architecture Controller (개방형 CNC를 응용한 하이브리드 머신 개발)

  • 김선호;김동훈;박정환;고태조;구태중
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.338-342
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    • 2003
  • Hybrid machine is based on hardware technologies of machine tool and software technologies of open architecture controller. In machining technology, combination technology of turning, milling, and grinding and in machining energy technology. combination of mechanical, electrical, and chemical technology are developed. This paper describes hybrid machine technology for combination of machining, on-machine measurement, on-machine CAM, and on-machine remote monitoring and control in open architecture controller environment. For on-machine measurement, non-contact measurement technology based on CAD information is developed. For on-machine CAM, interactive CAM program for automatic NC program generation and tool path simulation is developed. For generation on-machine remote monitoring and control, suitable interface method between web program and CNC is proposed. The developed hybrid machine technology is implemented in 3 axes milling machine for evaluation of operablity.

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M2M Standard Model and Advanced Machine Concept for u-Manufacturing (u-Manufacturing을 위한 M2M 표준화 및 진보된 Machine Concept)

  • Kim D.H.;Song J.Y.;Cha S.K.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.345-346
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    • 2006
  • In the future, a machine will be more improved in the form of advanced concept with collaborative ability in M2M(Machine to Machine, Mobile to Machine) environment for u-Manufacturing system. This paper tried to standardize M2M and design advanced concept machine. The M2M is front-end system for implementing autonomous ubiquitous environment. The advanced machine in M2M will be a collaborative machine with knowledge-evolutionary ability such as u-Machine(Ubiquitous machine), Vortal(Vertical Portal) machine and P2P(Peer to Peer) machine. Such advanced concept machines will be the key subject for M2M cooperation.

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Study on Structural and Stability Analyses of the Main Parts of a High-Precision Grinding Machine Considering the Cutting Force (절삭력을 고려한 고정밀 연삭기 핵심부품의 구조해석 및 안정성에 관한 연구)

  • Kim, In-Woo;Lee, Choon-Man
    • Journal of the Korean Society for Precision Engineering
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    • v.32 no.8
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    • pp.693-698
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    • 2015
  • Recently, the quality of products after the corresponding machining processes were scrutinized in the interest of maintaining a high product-quality standard. The structure and stability of machine tools are important for the prediction of product quality. A structural analysis needs to be carried out to achieve the stable design of machine tools before the initial design stage in the manufacturing process of a precision product. In this study, a structural analysis was carried out using a finite element analysis (FEA) simulation to obtain the design stability of the main parts of a grinding machine. The sizes and locations of both the maximum stress and deformation in consideration of the cutting force of the chuck, tail stock, and bearing of the grinding machine were analyzed. Finally the grinding machine was successfully developed.