• Title/Summary/Keyword: tool interference

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A Study on Tool Interference Avoidance Using Rectangular Surface Approximation (가각근사에 의한 공구 간섭 제거에 관한 연구)

  • 장동규;이희관;양균의
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1994.10a
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    • pp.188-192
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    • 1994
  • This paper presenta new method for tool interference acoidance using rectanguar approximation in NC machining of scuptured surface. The procedure of algorithm for approximation of sculptured surface to rectangular surface is described. Using this algorithm, we can check concave, convex, and side interference region and avoid these interferenes.

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The Cutting Tool-workpiece Interference Simulation for Worm Screw Machining by Side Milling (워엄 스크루 가공용 사이드 밀링의 공구 간섭 시뮬레이션)

  • Lee, Min-Hwan;Kim, Sun-Ho;Ahn, Jung-Hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.28 no.1
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    • pp.11-18
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    • 2011
  • A worm screw is widely used in a geared motor unit for motion conversion from rotation to linear. For mass production of a high quality worm, the current rolling process is substituted with the milling process. Since the milling process enables the integration of all operations of worm manufacturing on a CNC(Computer Numerical Control) lathe, productivity can be remarkably improved. In this study, the tooling system for side milling on a CNC lathe to improve machinability is developed. However, the cutting tool-workpiece interference is important factors to be considered for producing high quality worms. For adaptability of various worms machining, the tool-workpiece interference simulation system based on a tool-tip trajectory model is developed. The developed simulation system is verified through several kinds of worms and experimental results.

The Cutting Tool-workpiece Interference Simulation for Worm Screw Machining by Planetary Milling (워엄 스크루 가공을 위한 플래내터리 밀링의 공구 간섭 시뮬레이션)

  • Lee, Min-Hwan;Kim, Sun-Ho;Ahn, Jung-Hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.26 no.12
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    • pp.47-54
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    • 2009
  • A worm screw is widely used in a geared motor unit for motion conversion from rotation to linear. For mass production of a high quality worm, the current rolling process is substituted with the milling process. Since the milling process enables the integration of all operations of worm manufacturing on a CNC(Computer Numerical Control) lathe, productivity can be remarkably improved. In this study, the tooling system for planetary milling on a CNC lathe to improve machinability is developed. However, the cutting tool-workpiece interference is important factors to be considered for producing high quality worms. For adaptability of various worms machining, the tool-workpiece interference simulation system based on a tool-tip trajectory model is developed. The developed simulation system is verified through several kinds of worms and experimental results.

5-Axis Tool Path Generation from Offset Polyhedral Mesh (옵셋 다면체를 이용한 5축 가공경로 생성)

  • Kim Su-Jin;Yang Min-Yang
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.30 no.6 s.249
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    • pp.678-683
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    • 2006
  • In this paper, the 5-axis tool path that has been generated from the original surface is, newly generated from the offset polyhedral mesh. In this approach, the interference check between two solid models can be simplified to that of offset polyhedral mesh and axis line. The tool path computation and interference check based on the offset mesh is simpler and faster than that based on the original surface. But 5-axis tool path generation using this approach is able to apply only for ball endmill and still takes longer time than 3-axis tool path generation.

A Study on Efficient Roughing of Impeller with 5-Axis NC Machine (임펠러의 효율적인 5축 NC 황삭가공에 관한 연구)

  • Cho, Hwan-Young;Jang, Dong-Kyu;Lee, Hi-Koan;Yang, Gyun-Eui
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.27 no.11
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    • pp.1917-1924
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    • 2003
  • This paper proposes a roughing path generation method fer machining impeller with 5-axis machining center. Traditional researches are focus on finishing for machining impeller. To achieve efficient machining, roughing method must be studied. The proposed method consists two steps : One is to select optimal tool size and tool attitude by dividing cutting area into two regions to reduce cutting time. The regions are automatically divided by character point on the geometry of impeller blade. After dividing, the tool of the optimal size is selected for each divided region. The other is avoidance of tool interference. Tool interference in cutting areas is avoided by checking the distance between tool axis vector and ruling line on blade surface or approximated plan between ruling line. Using this method, the cutting time is reduced efficiently.

A Study on Efficient Machining of Impeller with 5-axis NC Machine (임펠러의 효율적인 5축 NC 가공에 관한 연구)

  • 조환영;이희관;공영식;양균의
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2002.10a
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    • pp.399-404
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    • 2002
  • An efficient method of machining impeller is presented. In the roughing process, the cutting area is divided into two regions to reduce cutting time and select cutting tools. The regions are determined by characteristic point on the geometry of impeller blade. Then, the tool of the maximum radius is selected in each area. Tool interference in cutting areas is avoided by checking the intersection between cooing tool axis and ruling line on blade surface.

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Interference Check and NC Data Optimization through Machine Simulation in 5 Axises Machining of a Vehicle Parts of Aluminum Alloy (Al 합금 수송기계부품의 5축 가공에서 머신시뮬레이션을 통한 간섭체크 및 NC 데이터 최적화)

  • Kim Hae Ji;Lee In-Su;Kim Nam Kyung
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.12
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    • pp.52-59
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    • 2004
  • This paper shows about the machine simulation embodiment when it happens NC equipment and between workpiece and interference in 5 axises machining of aluminium alloy a vehicles parts. And this research has been chosen because of the highest equipment interference occurrence rate at a vehicles parts processing of 5 axises horizontal machine. It can verify simulation and machining process through correlation of their dynamic relations, interference, collision as embodied virtual manufacturing system of machine, workpiece, and holder etc. That is necessary element in shape of machine tool, function and processing in imagination ball. Also, it verifies about interference and collision between NC equipment and workpiece, as it applied machine simulation to NC Data of actuality aircraft parts of BULKHEAD and FRAME. As the result of this study, by removing the equipment interference and collision element which creates NC data, the virtual machine tool it the efficiency of machine process has increased.

A Study of Radio Wave Propagation Criterion for the Cognitive Radio System using Interference Analysis in Broadcasting Band (방송대역에서 간섭분석을 이용한 무선인지 시스템의 전파 전달기준에 관한 연구)

  • Choi, Joo-Pyoung;Duy, Vo Quoc;Lee, Won-Cheol
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.34 no.12A
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    • pp.1014-1022
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    • 2009
  • In this paper, interference analysis is carried out to obtain the operating criterion and coexistence condition between digital television devices and cognitive radio-based mobile wimax devices in the UHF (Ultra High Frequency) broadcasting frequency bands. To this end, an efficient interfering calculation tool known as SEAMCAT (Spectrum Engineering Advanced Monte-Carlo Analysis Tool) is employed to acquire the coexistence criterions between heterogeneous radio links operating in the same portion of spectrum. As a result, these criterions will be used to achieve interference temperature limit level applied to interference temperature model for analyzing the capacity of cognitive radio receivers accurately.

Tool Interference Avoidance in compound Surface Using solid Modeling Method (Solid Modeling 기법을 응용한 복합곡면 가공에 있어서 공구간섭 제거)

  • 장동규
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.5 no.2
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    • pp.20-28
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    • 1996
  • Compound surface modeling is widely used for die cavities and punches. A compound surface is defined in 3-D space by specifying the topological relationship of several anlytic surface elements and a sculptured surface. A constructive solid gemonetry scheme is employed to model the analytic compound surface. the desired compound surface can be accomplished by specifying topological reationship in terms of boolean relations between pimitives and the sculptured surfaces. Additionally, a method is presented for checking and avoiding the tool interference occuued in machining the compound surface. Using this method. the interference of concave, convex, and side region can be checked easily and avoided rpapidly.

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A study on machine simulation application of aircraft parts in 5 axises horizontal machine (항공기 부품의 5축 수평형 공작기계 머신 시뮬레이션 적용에 관한 연구)

  • 이인수;김남경;김해지;장정환
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.367-372
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    • 2003
  • This paper shows about the machine simulation embodiment when it happened NC equipment and between workpiece and interference collision at 5 axises processing of aircraft parts. And this research has been chosen because of the highest equipment interference occurrence rate at aircraft parts processing of 5 axises horizontal machine. It can verify simulation and machining process through correlation about their dynamic relations. interference, collision as embodied virtual manufacturing system of machining tool, workpiece, and holder etc. that is necessary element in shape of machine tool and function and processing in imagination ball. Also. it verified about interference and collision between NC equipment parts and workpiece, for applied machine simulation to NC Data of actuality aircraft parts of BULKHEAD and FRAME.

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