• 제목/요약/키워드: 5축 가공

검색결과 207건 처리시간 0.074초

Insert Tip용 End Mill 공구의 형상정의와 5-축 가공에 관한 연구 (A Study on Geometric Definition and 5-Axis Machining of End Mill with Insert Tip)

  • 조현덕;박영원
    • 한국공작기계학회논문집
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    • 제11권6호
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    • pp.1-9
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    • 2002
  • This study describes the geometric characteristics and the 5-axis machining method in order to make end mill cutter coming with insert tips. End mill geometry is consisted of flute part and insert tip part. Flute part modeled by using ruled surfaces with constant helix angle, and insert tip part modeled by rectangular planes containing tapped hole of specified direction in its center. In this study, the modeled insert tip part considered both of a radial rake angle and a axial rake angle, because they were important cutting conditions. In order to machining the virtual end mill defined from geometric characteristics, we programmed a special software to machining the end mill considered in this study. This software can generate NC-codes about following processes, end milling or ball end milling of flute part end milling of rectangular plane, centering of hole, drilling of hole, and tapping of hole. Ant sampled end mills were modeled and machined on 5-axis CNC machining center with two index tables. Since machined end mills were very agreeable to designed end mills, we saw that the method proposed in this study can be very useful for manufacturing of end mill body with insert tip.

전자빔 가공기용 진공 5축 스테이지의 제어 및 운동특성 (The Control and Motion Characteristics of 5 axis Vacuum Stage for Electron Beam Lithography)

  • 이찬홍;박천홍;이후상
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2004년도 추계학술대회 논문집
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    • pp.890-893
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    • 2004
  • The ultra precision machining in industrial field are increased day by day. The diamond turning has been used generally, but now is faced with limitation of use, because of higher requirement of production field. The electron beam lithography is alternative in machining area as semiconductor production. For EB lithography, 5 axis vacuum stage is required to duplicate small and large patterns on wafer. The stage is composed of 2 rotational axis and 3 translational axis with 5 DC servo motors. The positioning repeatability and resolution of Z axis feed unit are 3.21$\mu$m and 0.5 $\mu$m/step enough to apply to lithography.

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금형의 5축 고속가공에서 공구 틸팅각에 따른 절삭력에 표면거칠기 특성 (The Characteristics of Cutting Force and Surface Roughness According to Tool Tilting Angle in 5-axis High Speed Machining of Molds)

  • 강익수;김정석;김석원;이기용
    • 한국공작기계학회논문집
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    • 제16권5호
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    • pp.63-69
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    • 2007
  • The high speed machining has been widely applied to manufacture dies and machine elements in industrial field. Especially, 5-axis milling has been employed to produce a wide range of turbine blades, impellers and complex molds. In this study, the machining characteristics of injection molds were investigated according to tool tilting angles in 5-axis milling. The cutting force and surface roughness were investigated with various tool tilting angles. When the tool tilting angle was over than 10 degree, the characteristics of cutting force and surface roughness were improved in machining of Al alloy.

5축 CNC가공의 검증에 관한 연구 (A Study on the Verification of 5-Axis CNC Machining)

  • 김찬봉;양민양
    • 대한기계학회논문집
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    • 제18권1호
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    • pp.93-100
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    • 1994
  • 5-axis CNC machining is being used in the manufacturing of tire mold, screw, and turbine blade because it can produce complex workpiece more efficiently and accurately than 3-axis CNC machining does. However, it is difficult to calculate the CL data in 5-axis CNC machining. This paper describes an efficient method to modify and edit the NC code and a data structure for representation of the workpiece produced by 5-axis CNC machining. Wireframe display of tool path and shading display of workpiece are used to represent verification results. Machining errors can be evaluated quantitively using the data structure based on the workpiece data model. The methods are implemented in a program with a IBM-PC and MS-Windows.

텅스텐카바이드 미세축의 전해가공 시 최적가공조건 선정 (Optimal Machining Condition of WC-Microshaft Using Electrochemical Machining)

  • 최세환;류시형;최덕기;주종남
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 추계학술대회 논문집
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    • pp.245-249
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    • 2002
  • Tungsten carbide microshaft is used as various micro-tools in MEMS because it has high hardness and good rigidity. In this study, experiments were performed to produce tungsten carbide microshaft using electrochemical machining. $H_2SO_4$solution was used as electrolyte because it can dissolve tungsten and cobalt simultaneously. Optimal electrolyte concentration and machining voltage satisfying uniform shape and large MRR of workpiece were found. For one-step machining, the immersion depth over 1 mm was selected for avoidance of concentration of electric charge at the tip of the microshaft. The limit diameter with good straightness was shown and an empirical formula for WC-microshaft machining was suggested. By controlling the various machining parameters, a straight microshaft with 30 $\mu\textrm{m}$ diameter, over 1 mm length and under 0.5$^{\circ}$ taper angle was obtained.

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

  • 김수진;양민양
    • 대한기계학회논문집A
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    • 제30권6호
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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.

자유곡면의 5축 NC 가공을 위한 CAM 시스템 개발 (Development of CAM system for 5-Axis NC machining of sculptured surfaces)

  • 전차수;박세형;전용태
    • 한국정밀공학회지
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    • 제10권1호
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    • pp.52-61
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    • 1993
  • Developed in this research is a CAM system for 5-axis NC Machining of sculptured surfaces. We identify problems in generating 5-axis NC data and propose methods of overcoming them. Issues discussed in this paper are: kinematic modelling of NC machines; determination of cutter position (location and orientation); check of machine work-range; linear trajectory plann- ing ; calculation of feedrate number. The proposed system has been implemented in FORTRAN77 on the Personal IRIS EWS, and it also constitutes a module of the CAD/CAM system 'CASSET' developed in KIST CAD/CAM lab.

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CL면 변환을 이용한 새로운 5축 가공경로 생성방법 (New 5-axis Tool Path Generation Algorithm Using CL Surface Transformation)

  • 김수진;양민양
    • 대한기계학회논문집A
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    • 제30권7호
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    • pp.800-808
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    • 2006
  • In this paper, the CL surface transformation approach that inversely deforms the 3-axis tool path generated on the deformed CL surface to a 5-axis tool path is introduced. The proposed CL surface transformation approach can be used if the orientation of the cutter is predefined. The CL surface based 3-axis tool path generation algorithms that have been improved well can be applied to the f-axis tool path generation.

다기능 5축 복합가공기 램 헤드 모듈의 동특성 분석 (Dynamic Characteristics Analysis of a 5-Axes Multi-tasking Machine Tool by using F.E.M and Impulse Hammer Test)

  • 김성민;장성현;김실근;하종식;최영휴
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2007년도 춘계학술대회A
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    • pp.1590-1594
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    • 2007
  • This paper describes a case study on dynamic characteristics analysis of a 5-axis multi-tasking machine tool of ram-head typed. Natural frequency and corresponding vibration modes of the machine tool structure were obtained by using both FEM modal analysis and an experimental modal test(impulse hammer test). Both the theoretical and experiment analysis results showed good agreement with each other. Finally, some discussion and review, from the view point of resonance vibration and/or mode coupled chatter, were made based on the analysis results.

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