• Title/Summary/Keyword: 5축 CNC 가공

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CAD/CAM Script Application Techniques for Addition Axial Application of CNC M/C (CNC가공기의 부가축 활용을 위한 CAD/CAM Script 활용 기법)

  • Lee, Yang-Chang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.10 no.6
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    • pp.1157-1163
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    • 2009
  • In order to improve in quality and productivity using the CNC machine tools, it has been endeavored to elevate production process by adding supplementary axes(2 axes) to 2,3 axial CNC machine tools. It is because the movement between the progress of work in processed goods is remarkably decreased more than that of general CNC machine tools that productivity improvement with precision maintenance can be improved. VBScript in CAD/CAM is applied to utilize CNC machine tools added supplementary axes so that Multi-axial &Multi-process manufacturin g program can be conveniently drawn up. However, there is generally much skilful work and operation by the manual program of CAD(2.5D) and CNC machine tools in the filed. As a result of conducting an experiment by COM-filing VBScript at the spot of Insert Tip for milling Face Cutter in CAD/CAM Software(2.5D), it was not only timesaving to draw up program but also more convenient than complicated Multi CAD/CAM Software to approach and possible to program various products instantaneously.

5-Axis CNC Machining for Drum Cam with Rotational Follower - I (Post Processing Method for Rough Machining) (회전형 종동절을 갖는 드럼 캠의 5-축 CNC 가공 - I (황삭가공을 위한 포스트 프로세싱))

  • Cho, Hyun-Deog;Yoon, Moon-Chul;Kim, Kyung-Jin
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.19 no.5
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    • pp.678-683
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    • 2010
  • The drum cam with rotational follower is used to apply the ATC and index table of machine tools and it has the merit of minimizing the backlash. In general, to machine the drum cam with rotational follower, 5-axis CNC machine must be used and its kinematic principle must be included in modeling on CAM. So, the commercialized CAM software can't be applied to this machining of drum cam. Though some special software for machining drum cam was developed, it could be applied to special 5-axis CNC machine tools and the finish machining module was not applied. To solve this problem, this study includes the induction of the post processing algorithm for the rough machining of drum cam on several 5-axis CNC machine tools, type AC, AB and Be. The finish machining software will be treated in next study. A sample drum cam was machined on 5-axis CNC machine tool of AC type. The designed geometric profile of drum cam consist to the measured profile after machining well. This post processing algorithm for rough machining of the drum cam was clearly verified.

5-axis machining with selective three-axis controlled CNC machine (선택적 3축 제어기를 이용한 5축 가공연구)

  • 김성구;서석환;이정재
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.11a
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    • pp.683-689
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    • 1996
  • 5축 가공기는 가공중의 공구자세 변화를 요구하는 복잡한 산업형상의 가공, 혹은 경사 가공을 통한 표면조도 향상등의 목적으로 채용되는 첨예의 공작기계로서 이를 지원하는 CAM연구가 활발히 이루어지고 있다. 그러나, 산업현장에서 흔히 5축 가공기로 일컬어지는 상당수의 5축 가공기는 기구축은 5축을 가지나, 동기제어 축수는 3측인 “선택적 3/5축 가공기”의 형태로서 진정한 의미의 5축가공기와는 근본적으로 다르다. 5축 동기제어를 지원하는 CAM연구는 부분적으로 연구 개발된 상태이나, 선택적 3/5축을 지원하는 CAM 이론은 연구된 바 없으며, 이에 따라 현장에서는 공작물의 셋업을 변경시키는 소위 자동 인덱싱 방식으로 활용하고 있는 실정이다. 본 연구팀에서는 선택적 3/5축 가공기에서 5축 가공을 실현할 수 있는 공구경로 산출 및 제어알고리즘을 개발하고 있으며, 본 논문에서는 (5축 가공 대비) 선택적 3/5축 가공문제의 이론적 특성과 경사가공을 수행하기 위한 알고리즘을 소개하고 시뮬레이션을 통하여 유효성을 보인다.

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A Study on The 5-Axis CNC Machining of Impeller (임펠러 5-축 CNC 가공에 관한 연구)

  • 조현덕
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.6 no.4
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    • pp.19-26
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    • 1997
  • The manufacture of an impeller typically requires the 5-axis CNC machining, since the impeller is usually under working conditions such as high speed, high temperature, and high pressure. Thus, this study contributes to development of an exclusive CAM system for effective 5-axis CNC machining of a ruled surface type impeller. In this study, the sampled impeller is made of blades and a body and the blade consists of ruled surfaces between hub curve and shroud curve. In the post processing for 5-axis NC part program, the cutter axis direction vector is the straighten vector on ruled surface. The position of ball center in ball end mill cutter is decided on the interference check between the cutter and body surface of impeller using with the modified z-map method that z-axis is the same of cutter axis direction vector. The exclusive CAM system for an impeller developed in this study was very effective for designs and 50-axis machining of a ruled surface type impeller.

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

  • 김찬봉;양민양
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.18 no.1
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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.

Computer Automated Manufacturing Lab (저축 CNC 환경에서의 효율적인 황삭가공)

  • 강지훈;서석환;이정재
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1994.10a
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    • pp.193-198
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    • 1994
  • 다축가공은 3축 이상의 동시제어축을 이용하여 복잡한 형상을 효율적으로 가공할 수 있는 첨예의 기술인 반면, 가공 설비의 고가로 인해 실제현장에 보급되지 못하고 있는 실정이다. 부가축 방식에 의한 저축화 가공방식은 이러한 현실적 문제에 대처할 수 있는 강력한 방식으로서, 본 연구팀에서는 3축 CNC 공작기계에 부가축 테이블 방식을 이용하여 5축 곡면가공을 구현한 바 있으며, 정삭가공 알고리즘을 개발한 바 있다. 본 연구에서는 부가축 환경하에서 황삭가공 알고리 즘을 다루며, 기존의 전축환경의 황삭가공에 비해공구자세를 인텍싱 형태로 변화시킬 수 있다는 차이가 있으며, 이에 따라 자세조정횟수의 초소화가 생산성 지표로 부각된다. 본 연구에서 개발된 황삭경로 알고리즘은 자세조정횟수를 포함 하여 공구접근영역, 공구교환횟수, 피드조정을 통하여 전체적을 황삭가공시간의 최소화로 접근하였다. 연구된 알고리즘 은 컴퓨터시뮬레이션을 통하여 검증하였으며, 실제절삭을 통한 검증이 추진중에 있다.

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5-Axis CNC Machining for Drum Cam with Rotational Follower - II (Post Processing Method for Fine Machining) (회전형 종동절을 갖는 드럼 캠의 5-축 CNC 가공 - II (정삭가공을 위한 포스트프로세싱))

  • Cho, Hyun-Deog;Yoon, Moon-Chul;Kim, Kyung-Jin
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.19 no.5
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    • pp.684-690
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    • 2010
  • A drum cam with rotational follower has a cam mechanism and it is mainly used in its application such as index table and ATC of machine tool. Also its use can reduce the backlash in its kinematic movement. To machine the drum cam with rotational follower, 5-axis CNC machine tool is generally used and its kinematic principle is included in it's design. Until now, the commercialized CAM software can't cover the application of the drum cam machining. Even if, some special software was developed for machining a drum cam, the post processing method for finish machining was not developed yet. And to overcome the problem, the form tool is still used on the tool path of rough machining. This study includes the induction of the post processing technique for the finish machining of drum cam on three 5-axis CNC machine tools, type AC, AB and BC. To prove the finishing geometric profile, the result was clearly verified through inspection and geometric measurement after direct machining of the drum cam in AC type 5-axis machine tool in this study.

The Development of Exclusive CAD/CAM System for Impeller Blades Formed by Ruled Surface II (A Study on the 5-Axis Machining) (Ruled Surface로 형성된 임펠러 블레이드 전용 CAD/CAM 시스템 개발 II(5-축 가공에 관한 연구))

  • ;;;;;;董玉革
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.11 no.3
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    • pp.1-8
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    • 2002
  • This study is continuous with the study I (A Study on the Modeling) and the sample impeller of this study is defined by the modeling process of the exclusive CAD/CAM system developed in the study Ⅰ. And, this study describes a method for the 5-axis machining of impeller blades formed by ruled surface. Therefore, the exclusive CAD/CAM system is the software for modeling md machining of impeller blades. By using the machining method suggested in this study, we could manufacture impeller blades on 5-axis CNC machining center and the machined impeller was very agreeable to the designed impeller. Thus, theories proposed in this study can be very useful for the 5-axis machining of impeller blades.

Development of Post-Processor and Cutting Motion Simulator for 5-axis CNC Laser Cutting Machine (5축 레이저 절단기용 포스트프로세서 및 절단 모션 시뮬레이터 개발)

  • Kang, Jae-Gwan
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.8 no.4
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    • pp.7-13
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    • 2009
  • Five-axis laser cutting has great advantages when it is applied to 3-dimensional machining requiring high cutting quality. For developing 5-axis CNC laser cutting systems, however, many problems such as rotating a laser head or a working table, 5-axis servo-control mechanism, tool path generation and post processing, and collision avoidance between a laser head and a work-piece should be solved. In this paper, we deal with developing a dedicated CAM system based on UG-NX3 for 5-axis laser cutting machine. Two essential modules such as post-processor and cutting motion simulation was developed. The developed system was applied to cutting curve defined on 3-D workpiece in order to show the validity of the proposed methods.

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