• Transactions of the Korean Society of Machine Tool Engineers
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• v.13 no.5
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• pp.1-6
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• 2004

Measurements of circular motion accuracy of NC lathe have achieved with ball bar systems proposed by Bryan, but the ball bar systems have ifluenced on the measuring data by way of the accuracy of the balls and the contacts of balls and bar seats. Therefore in this study, error data during of circular motion of ATC(Automatic Tool Changer) of NC lathe will be acquired by reading zx plane coordinates using two optical linear scales. Two optical linear scales of measuring unit are fixed on z-x plane of NC lathe, and the moving part is fixed to ATC and then is made to receive data of coordinates of the ATC at constant time intervals using tick pulses comming out from computer. And then, error data files of radial direction of circular motion are calculated with the data read, and the aspect of circular motion are modeled to plots, and are analysed by means of statistical treatments of circularity, means, standard deviations etc.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.10a
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• pp.148-148
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• 2003

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.83-84
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• 2008

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1999.10a
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• pp.27-33
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• 1999

In order to regulate cutting force at a desired level during NC lathe process, a feedrate override Adaptive Control Constraint system was developed. Nonlinear model of the cutting process was linearized as an adaptive model with a time varing process parameter. Performance of the ACC system was confirmed on the NC lathe equipped with the developed NC system through a large amount of experiment.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.5
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• pp.8-14
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• 2000

STEP-NC는 차세대 수치제어 장치의 인터페이스 표준 제정 및 새 표준을 기반으로 한 지능적인 고성능 수치제어 장치의 개발을 목표로 한다. 차세대 수치제어 장치의 인터페이스 표준제정은 ISO TC184/SC1/WG7에서 ISO 14649라는 이름으로 수행하고 있으며, 여기에는 밀링, 선반, EDM, 그라인딩 등 수치제어를 사용할 수 있는 전 공정을 대상으로 한 수치제어 장치의 인터페이스 표준을 제정 중에 있고 현재는 밀링 공정을 위한 데이터 모델이 CD 또는 DIS 버전으로 개발되어 있다.

• The Science & Technology
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• v.16 no.6 s.169
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• pp.26-27
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• 1983

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1991.04a
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• pp.243-250
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• 1991

This paper concerns the development of NC programming system TIG (Turning with Interactive Graphics) with interactive graphics for turning operation. The system cosists of the processor, the post-processor and the system-user interface. Different from previous segment contour based NC graphic programming systems, the frliability and efficiencyof programming is realized by using Boolean operation with block unit based ICONs for the geometry definition. The tool motion can be also displayed on the screen together with the part contour. The system calculate automatically the number of passes based on the user specified cutting conditions.

• Proceedings of the KIEE Conference
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• 1995.07a
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• pp.21-23
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• 1995

This paper is dealing with development of H/W and S/W of Retro-Fit NC lathe controller. Especially, S/W program is handling the tool nose radius compensation. A test of S/W program execution in the developed H/W has been made and its result showed a reasonable application in real practice.

• 제어로봇시스템학회:학술대회논문집
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• 1986.10a
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• pp.414-418
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• 1986

Although the use of NC machine is increasing in modern industry, unfamiliarities of the NC program syntax do not allow us to program it easily. So, automatic programming systems, such as APT, COMPACT, CL, were developed to help the uninitiated to write NC program easily. In this research, Korean Automatic Programming System for 2-axis NC lathe is developed, by which NC program is easily programmed using Korean letters. In addition, Graphic Debugger for 2-axis NC lathe is developed for debugging the NC program error and animating the cutting process. The above systems are run on the IBM-PC/XT.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1991.10a
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• pp.254-260
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• 1991

본 연구는 CAD데이터로 부터 부품의 형상을 인식하여 CAD시스템과 인터페이스된 자동공정설계시스템을 지식공학적 접근방법을 도입하여 개발하고자 함이 연구의 목적이다. 연구의 대상은 NC선반가공용 회전형상부품을 대상으로 하며, CAD시스템은 AutoCAD를, 소프트웨어개발에 사용된 프로그래밍언어는 Turbo-C(Version 2.0)를, 전문가시스템셀(Expert System Shell)은 CLIPS를 이용하여 개인용컴퓨터(PC)를 사용하여 개발한다. 본 연구의 내용은 NC선반가공용 회전형상부품을 대상으로 CAD/CAPP 데이터베이스 생성과 부품형상인식, 공정 및 작업의 선정, 가공순서의 결정에 대한 알고리즘을 개발하고, 공학적 규칙 및 전문가의 경험적 지식을 획득하여 지식베이스를 구축하며, 이 지식베이스를 사용한 공정설계 전문가시스템의 개발에 관한 연구의 중간결과이다.