• Title/Summary/Keyword: Cutter blade

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Development of the Spent Fuel Rod Cutting Device by Cutter Blade Method (Cutter blade 방식에 의한 사용후핵연료봉 절단 장치 개발)

  • 정재후;윤지섭;홍동회;김영환;김도우
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2000.11a
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    • pp.393-396
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    • 2000
  • Spent fuel rod cutting device should cut a spent fuel rod to an optimal size in order to fast decladding operation. In this paper, for developing spent fuel rod cutting device with cutter blade, rod properties such as dimension and material of zircaloy tube and fuel pellet are investigated at first and then, various methods of existing cutting devices used commercially are investigated and their performance are analyzed and compared. This device is designed to be operated automatically via remote control system considering later use in Hot-Cell (radioactive area) and the mdularization in the structure of this device makes maintenance easy. SUS and Zircaloy-4 are selected as cut material used in the test of spent fuel rod cutting device by cutter blade. In order for constructing the high durable cutter blade, various materials are analyzed in terms of quality, shape, characteristic, and heat treatment, etc. and from these results, spent fuel rod cutting device is designed and manufactured based on the considerations of durability, round shape sustainability of rod cross-section, debris generation, and fire risk, etc.

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Experiment on Cutting the SUS and Zircaloy Tubes by Cutter Blade (Cutter blade에 의한 SUS 및 지르칼로이 튜브 절단 실험)

  • 정재후;윤지섭;홍동희;김영환;박기용
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.651-654
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    • 2001
  • In the dismantling process of nuclear spent fuels, the spent fuel rod cutting process, followed immediately by the decladding process, performs the cutting the spent fuel rods to a proper length for fast decladding operation. In this paper, we analyzed the chemical compositions, mechanical properties, and physical characteristics for SUS and zircaloy tubes in order to identify the feasibility of cutter-blade type in cutting SUS and zircaloy tubes. It is considered that material, shape and angle, and heat treatment for fabricating the highly durable cutter blade and also it is investigated that the round-shape sustenance of cross-section, amount of debris production, and fire occurrence for measuring the cutting performance on SUS and zircaloy tubes, spent fuel rod cutting device is designed to be operated automatically through the remote control system for use in Hot Cell(radioactive) area and the electro-driven mechanical parts are modularized for easy maintenance. Results from various experiments confirm the efficiency of this device.

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A Study on the Sawing for Cubic Zirconia (큐빅 질코니아의 절단가공에 관한 연구)

  • Seo, Young-il;Choi, Hwan;Lee, Jong-chan;Cheong, Seon-hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.13 no.6
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    • pp.145-151
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    • 1996
  • In sawing operation of cubic zirconia, the performance of diamond cutter blade is very dependent on the blade variables. This investigation presents experimental results which show the effects of the blade variables such as concentration, grain size of diamond, types of diamond abrasives, and bond materials on the behavior of the blades. Based on the experimental results an optimum blade condition for the sawing of cubic zirconia was recommended.

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A Study on the Cutting-off Technology for Synthetic Jewelry (인조보석 절단기술에 관한 연구)

  • Seo, Young-Il;Choi, Hwan;Lee, Jong-Chan;Lee, Jae-Geon
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.04b
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    • pp.23-27
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    • 1995
  • In sawing operation of synthetic jewelry, the performance of diamond cutter blade is very dependent on the blade variables. This investigation presents ecperimental results which show the effects of the blade variables such as types of diamond abrasives, grain size of diamond, concentration, and bond materials on the beavior of te blades. Based on the experimental results an optimum blade condition for the sawing of cubic zirconia was recommended.

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Mechanics of Diamond Blade Sawing (다이아몬드 블레이드를 사용한 절단가공이 절단저항력 해석)

  • Seo, Young-Il;Choi, Hwan;Lee, Jong-Chan
    • Journal of the Korean Society for Precision Engineering
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    • v.13 no.1
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    • pp.84-90
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    • 1996
  • A theoretical analysis is presented on the mechanics of diamond blade sawing. The normal and tangential components of cutting force are calculated. Experimental results are also presented, which show the effects of cutting variables such as cutting speed, feed speed, cutting area, and concentration of diamond blade on the cutting forces. The experimental results are found to be in good agreement with those predicted by the analytical calculation.

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Mechanics of Diamond Blade Sawing (다이아몬드 컷터 블레이드를 사용한 절단작업의 절단저항력 해석)

  • Seo, Young-Il;Choi, Hwan;Lee, Jong-Chan
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.04b
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    • pp.69-74
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    • 1995
  • A theoretical analysis is presented on the mechanics of diamond blade sawing. Experimental results are also presented, which show the effects of cutting variables such as cutting speed, feed speed, cutting area, and concentration of deamond blade on the cutting forces. The analytical results aggreed well with experimental ones.

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Verification of Tool Collision for 3-Axis Milling (3축 밀링 가공의 공구 충돌 검증)

  • Chung, Yun-C.;Park, Jung-W.
    • Proceedings of the KSME Conference
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    • 2001.06c
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    • pp.116-121
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    • 2001
  • Verification of tool collision is an important issue in die and mold machining. In this paper three functions of verification are schematically explained based on Z-Map model. The first function is getting a collision-free region when a tool assembly and a part surface model are given. The second function estimates the shortest length of cutter shank with that the tool cuts all of a region without collision. The last one is cutting simulation considering all parts of tool assembly as well as cutter blade. Those functions can be easily implemented by using several basic operators of Z-Map model which are explained also. Proposed approaches have enough accuracy to verify collision in reasonable computing time.

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Verification of Tool Collision for 3-Axis Milling (3축 밀링 가공의 공구 충돌 검증)

  • Chung, Yun-Chan;Park, Jung-Whan
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.6
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    • pp.35-42
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    • 2002
  • Verification of tool collision Is an important issue in die and mold machining. In this paper three functions of verification for 3-axis milling machining are schematically explained. Operators of geometric models are explained at first, which will be used in the functions of verification. The first verification function is getting a collision-free region when a tool assembly and a part surface model are given. The second function estimates the shortest length of cutter shank with that the tool cuts all of a region without collision The last one is cutting simulation considering all parts of tool assembly as well as cutter blade. Proposed approaches can be easily implemented by using several basic operators of geometric model. An example to calculate collision-free region is presented also.

Peak force control in the milling process (엔드밀 공정에서 최대 절삭력 제어)

  • 김홍겸;이건복
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2001.04a
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    • pp.188-191
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    • 2001
  • Generally, main factors of tool damage are cutting speed, feed rate and depth of cut. The increase of those factors can cause tool breakage or worsen product quality such as machining accuracy deterioration. Those three factors are concerned with cutting force. Cutting force reaches at its maximum value when cutter blade cuts away the object directly, and it is the time when tool damages are at high probability. In this study, we detect the maximum cutting force affecting tool damage and control the maximum cutting force based on the measured peak force.

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Development of the Altari Radish Pre-processing System for Kimchi Production(III) - Development of the Peeling Device - (김치생산용 알타리무 전처리가공시스템 개발(III) - 삭피장치의 개발 -)

  • Min Y. B.;Kim S. T.;Chung T. S.
    • Journal of Biosystems Engineering
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    • v.30 no.3 s.110
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    • pp.166-171
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    • 2005
  • A prototype peeling device with rotating cutter blades was designed to peel altari radish skin. With the designed blades, the maximum peeling depth increased as the cutter clearance increased but the effect of the peeling speed was not significant. The optimal operating conditions for peeling was; the peeling speed was at 0.19m/s when peeled 2.5 blades/sec and the maximum peeling depth was 1.5mm, the minimum peeling depth was 0.5mm, and the leaf rotating speed was 12 rpm, respectively. In the peeling test fur the optimum operation conditions, with a auxiliary rolling device could adjust the rotational speed of the root uniformly, the altari radishes under 70mm diameter were peeled perfectly.