• Title, Summary, Keyword: Feeding System

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A Study on the Analysis and Design for Disc Drive Feeding System (디스크 드라이브 이송계의 해석 및 설계에 관한 연구)

  • 김선모;엄재용;최한국;강희종;임홍균
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.977-982
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    • 2001
  • In this paper, we deal with the analysis and optimum design of a disc drive feeding system. Using this proposed design method, we can determine an optimal step motor and lead-screw for the shorter seek time and required seek resolution. Simulation results show that this method can be potentially implemented in the design of a feeding system.

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Graphics -Oriented CAD Development of Kinematic Analysis And Simwlation of An Automatic Feeding System By A Curvilinear inverse Cam. Part I: Motion Analysis of A Cam-Feeding System (곡선 캠을 이용한 자동 이송장치의 기구 해석 및 Simulation용 Graphics-Oriented CAD 개발 1)

  • 신중호;노창수;최영진;김상진
    • 제어로봇시스템학회:학술대회논문집
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    • pp.264-268
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    • 1987
  • This paper is concerned on kinematic analysis and simulation of an automatic feeding mechanism subjected by the motion of a curvilinear inverse can. The curvilinear cam is rotated by positioning a translating roller and the automatic feeding mechanism is moved to the sliding position by the motion of a campin fixed on the curvilinear cam. The curvilinear cam consists of two arcs of circles and two straight lines. The modular approach is used for the kinematic analysis of the feeding mechanism. As the first part of the paper for the motion simulation of the cam-feeding system, this paper discusses the algorithm to simulate the motion of the cam-feeding mechanism. The second part of the paper presents the state-of-art for the graphics-oriented CAD technique,

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Nd:YAG Laser Cladding of Inconel with Wire Feeding (와이어 공급에 의한 Inconel의 Nd:YAG 레이저 클래딩)

  • Kim, Jae-Do;Bae, Min-Jong;Peng, Yun
    • Journal of Welding and Joining
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    • v.18 no.3
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    • pp.83-88
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    • 2000
  • Laser cladding processing allows rapid transfer of heat to the material being processed with minimum conduction into base metal, resulting in low total heat input. The effects of Nd:YAG laser cladding with wire feeding on the mechanical properties of Inconel alloy were investigated. inconel alloy is used as the material of nuclear steam generator tubing because of its mechanical properties and corrosion resistance properties. The device for Nd:YAG laser cladding with wire feeding was designed. It consists of the wire feeding system, the wire cladding system and the shielding gas system which prevents the clad layer from being oxidized. Experimental as results indicated that the wire feeding direction and position were important for laser cladding with wire feeding. The wire feeding speed should be adapted according to cladding speed for good shaping of clad layer. The effect of heat on the HAZ size can be limited and the growth of grain size of HAZ size was not serious. The hardness of clad layer and heat affected zone increased with increasing of cladding speed.

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Development of Push-pull Type Arc Welding Wire Feeder (아크 용접 와이어의 장거리 송급을 위한 Push-pull 방식의 와이어 송급장치 개발)

  • Yoon, Hyun-Jun;Hwang, In-Sung;Kim, Dong-Cheol;Kang, Moon-Jin;Choi, Ki-Gab
    • Journal of Welding and Joining
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    • v.31 no.3
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    • pp.39-43
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    • 2013
  • It is difficult to feed welding wire stably, when the distance between welding wire feeder and welding torch is far enough. In order to solve this problem, arranging a extension wire feeder between them could be one of useful methods. However, the welding wire could be twisted up in the extension cable between extension and terminal wire feeders in the case that RPM of extension wire feeding motor is higher than that of terminal motor. In this study, feeding problem of normal push-pull wire feeding system occurred at low welding current range less than 250A. In order to solve the problem, two new wire feeding systems of push-pull type were introduced. Welding wire feeding tests were preformed in the range of 150A to 400A with the developed push-pull feeding system. In addition, weldability test was performed at the welding current of 200A, 300A, and 400A. The welding wire twisting problem that was observed in the normal feeding system did not occur in the new push-pull wire feeding system.

Basic Study on Quality Evaluation Technique for Peeled Garlics(I) -Rotation sytem for vision-based garlic sorter- (박피 마늘의 품위판정 기술개발에 관한 기초연구(I) -영상식 마늘 선별기용 반전장치 개발-)

  • 이종환;이성범;안청운
    • Journal of Biosystems Engineering
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    • v.26 no.3
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    • pp.271-278
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    • 2001
  • Many workers in the garlic peeling factory are separating the sound peeled garlics from the unpeeled and defective ones in a manual way. In order to reduce the seasonal labor requirement and operating cost, the mechanized garlic sorting system such as the vision-based garlic sorter should be developed. This study was conducted as one of basic studies on developing quality evaluation technique for peeled garlics, especially to developed the system for acquiring the whole surface images of garlics with a CCD camera. The following results were obtained from this study. 1. The belt-type garlic rotation system was devised to apply for the vision-based garlic sorter and was tested to decide the criteria of design and optimum conveying speed. 2. To evaluate the performance of the developed garlic rotation system, feeding rate and rotating rate were measured under the conditions of four experimental factors such as the inclined angle of rotating belt, the inclined angle of feeding belt, the height of plate arrays on feeding belt and the conveying speed of belts. And the capacity of the system according to mixture ratios of peeled garlics and unpeeled garlics was analyzed as a feasibility test. 3. For the inclined angle of rotating belt 20°and height of plate array on feeding belt 22㎜, the maximum rotating rate for garlic samples including unpeeled ones was 81.1% at the conveying speed of 4.2 garlic/sec. And under these condition, the maximum feeding rate was 85% at the inclined angle of feeding belt 6.5°. 4. The capacity of the developed garlic rotation system was almost constant regardless of mixture ratio of peeled garlics and unpeeled garlics and its range was 2.95∼3.92 garlic/sec. At the conveying speed of 4.2 garlic/sec, the capacity of the garlic rotation system was calculated ad 58∼64 kg/hr. 5. To improve performance of the garlic rotation system, it is recommended to develop a device to slide garlics into feeding belt.

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The test facility for propellant feeding system of liquid propulsion system (액체추진기관 추진제 공급계 시험설비)

  • Kwon Oh-Sung;Na Han-Bee;Lee Joong-Youp;Jeong Yong-Gap;Cho Nam-Kyung;Kil Gyoung-Sub
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.79-82
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    • 2004
  • Propellant feeding system is the system to satisfy propellant feeding requirements(mass flow rate, pressure, temperature) at engine inlet of launch vehicle. Propellant feeding test facility is being constructed for the development scheme of pressurization system, processing in tank, propellant piping system, and flow control system that are main technologies in order to develope propellant feeding system. This paper introduces the propellant feeding test facility being constructed in KARI.

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A Study on the Design Procedure of the Eight Pole Magnetic Bearings for the Inner-rotor and the Outer-rotor Type

  • Lee, Jun-Ho;Park, Chan-Bae;Lee, Byung-Song;Lee, Su-Gil;Kim, Jae-Hee;Jung, Shin-Myung;Lee, Hyung-Woo
    • Journal of Electrical Engineering and Technology
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    • v.8 no.6
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    • pp.1424-1430
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    • 2013
  • This paper presents design procedure of the magnetic bearings used for high-speed electric machines and flywheel energy storage systems. Magnetic bearing can be categorized by inner-rotor type and outer-rotor type according to the position of the rotary disc. These two types are applicable based on application environments such as application space, required attraction force, and controllability. Magnetic bearing is generally designed based on the ratio (geometrical coefficient or geometrical efficiency) of pole width to rotor journal radius but proper ratio is only decided by the analysis. This is the difficulty of the magnetic bearing design. In this paper, proper design technology of the inner-rotor type and outer-rotor-type eight pole magnetic bearings is introduced and compared with the FEM analysis results, which verifies the proposed design procedure is suitable to be applied to the design of the magnetic bearings for the industrial applications and flywheel energy storage system.

An Automated Machine-Vision-based Feeding System for Engine Mount Parts (머신비젼 기반의 엔진마운트 부품 자동공급시스템)

  • Lee, Hyeong-Geun;Lee, Moon-Kyu
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.5
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    • pp.177-185
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    • 2001
  • This paper describes a machine-vision-based prototype system for automatically feeding engine-mount parts to a swaging machine which assembles engine mounts. The system developed consists of a robot, a feeding device with two cylinders and two photo sensors, and a machine vision system. The machine vision system recognizes the type of different parts being fed from the feeding device and estimates the angular difference between the inner-hole center of the part and the point predetermined for assembling. The robot then picks up each part and rotated it through the estimated angle such that the parts are well assembled together as specified. An algorithm has been developed to recognize different part types and estimate the angular difference. The test results obtained for a set of real specimens indicate that the algorithm performs well enough to be applied to prototype system.

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Simulation and Experimental Methods for Media Transport System : Part II, Effect of Normal Force on Slippage of Paper

  • Ryu Jae-Kwan;Lee Soon-Geul;Rhim Sung-Soo;Choi Jin-Hwan;Song In-Ho
    • Journal of Mechanical Science and Technology
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    • v.19 no.spc1
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    • pp.403-410
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    • 2005
  • Many daily appliances for examples copiers, printers and ATMs contain the media transport system (MTS) and the slippage between the medium in the MTS deteriorates the performance quality of the whole system. The slippage of the medium in the MTS is affected by many parameters including the friction coefficient between the feeding rollers and the medium, the velocity of the feeding rollers, and the normal force exerted on the medium by feeding rollers. This paper focuses on the effect of the normal force on the slippage while the medium is being fed. For this purpose, we developed a two-dimensional simulation model for a paper feeding system. Using the simulation model, we calculated the slippage of the paper for different normal forces. We have also constructed a testbed of the paper feeding system to verify the simulation results. Experimental results are compared with the simulation results.

FEEDING SYSTEM OF LARGE RUMINANTS IN RURAL BANGLADESH

  • Rahman, M.M.;Islam, M.R.;Rahman, M.M.;Zaman, M.A.;Malek, M.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.5 no.2
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    • pp.349-355
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    • 1992
  • In order to explore feeding practices of large ruminants and methods followed in the rural areas, an exploratory survey was made during the period from January 1988 to January 1989 in eight different agro-ecological areas of Bangladesh in relation to the existing seasons and farmers' categories. The study shows what feeding practices varied (p<0.01) from area to area and season to season but not with the farmers' category. Considering the overall picture of feeding practices existing in the country, it can be observed that bigger proportion of farmers practiced stall feeding and tethering ($38.4{\pm}35.1$) followed by stall fed ($34.3{\pm}35.2$) and grazing or tethering ($17.3{\pm}26.7$). The figure with wider deviations indicates that farmers in the rural areas did not follow a smooth feeding practice, the system is rather a complex, heterogenous and a mere consequence of existing land use system. The results of feeding methods of by-product concentrates indicate that it also varied (p<0.01) from area to area but however, not with seasons and farmers' category. It is observed that bigger proportion of farmers fed concentrates to their animals mixed with water ($74.1{\pm}30.3$) followed by mixed with roughage and water ($10.3{\pm}13.3$) or fed alone ($5.6{\pm}14.2$). The method like feeding practice is also complex and heterogenous in the rural areas of Bangladesh. Hence, it is needed to develop a strategic feeding system and method identifying the problems associated with those.