• Proceedings of the Korean Society of Precision Engineering Conference
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• 2013.05a
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• pp.801-802
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• 2013

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1993.10a
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• pp.345-350
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• 1993

This paper presents a new method based upon the light scattering concept for on-the-machine measurement of roughness of ground surfaces. The present method utilizes fluxes of scattered lights condensed through lenses aligned along the specular direction. A theorctical analysis is preformed for the purpose of investigating the possibility of the method as well as determining the experimental condition. Experiment is also performed to show the effectiveness of the proposed method. The theoretical and experimental results show that the proposed method has a potential to identify a wide range of surface roughness and is robust enough to be useful in on-the-machine measurement of roughness of ground surfaces.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.24-27
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• 1995

This paper presents, step-by-step, the capabilities that a general-purpose simulation environment, such as Simulab/Matlab,provides for an intuitive and sfficient modelling of grinding processes. Starting from a revision of the different approaches which can go found in the technical literature the paper begins with the well-known block-diagram forst presented by Snoyes and how the different parameters for the simulation are introduced in the model(machine,grinding wheel and process parameters). Special attention is paid to the fact that nonlinear phenomena can easily be include.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.28-32
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• 1995

Bacause the chatter vibration is a main factor to damage on the quality and integrity, The cure is required peticurity in cykinderical plunge grinding. The chatter vibration relatied with wheel speed, workpiece and infeed rate. Therefore, we expressed more credible normal signal and chatter signal Pattern in accrdiance with wheel speed and acquired RMS signal of the accelerrometer. In thos study, after finding the chatter pattern, we applied two parameters, standard deviation and Kurtosis, to Neural Network.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.57-60
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• 1995

Recently, ELID (electrolytic in-process dressing) grinding technique is developed. It is possible to make a efficient precision machining of hard materials such as ceramic hard metals, and quenched steels. This paper deals with some typical applications of ELID-grinding for cylindrcal machining. The significant advantages, performance and characteristics on mirror surface grinding for external surface are described.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1993.04b
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• pp.272-276
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• 1993

We made to develop CNC Tool Grinding Machine automating the linear motion of X,Y,Z axis of table, and thetilting and rotation of tool holding vice by using Encorder to increase the efficiency of tool grinding for the Conventional Tool Grinding Machine. We did not consider the part of static, dynamic and thermal behavior that must necessary consider when wedesign, because we used existing Conventional Tool Grinding Machine as it is. We investigated simulation to make existing Conventional Tool Grinding Machine like CNC. We also designed it, and we compared the capability of existing Conventional Tool Grinding and CNC Tool Grinding Machine, and we investigated, too.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1992.10a
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• pp.145-150
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• 1992

화인세라믹의 우수한 공학적 특성으로 인한 최근의 이용가치 증대와 더불어 세라믹의 고정도 가공에 대한 관심이 높아지고 있다. 다이아몬드휠을 이용한 연삭이나 다이아몬드 공구를 이용한 선삭에 의해 세라믹의 고정도 표면생성을 실현시키고자 하는 연구가 활발히 진행되고는 있으나 아직 미흡한 상태에 있다. 따라서 전통적으로 고정도 표면생성에 널리 용되어 온 래핑에 의한 표면다듬질이 현재 행하여지고 있는 일반적인 방법이다. 본 연구에서는 화인세라믹의 고정도 표면생성을 위한 원통래핑 공정의 최적화 방법으로 실험계획법의 한 응용분야인 반응표면분석법을 이용하였으며 그 결과, 적은 재료와 시간으로 능률적이고 체계적인 실험 및 통계적인 분석을 통해서 원통세라믹의 고정도 표면생성을 위한 최적래핑조건을 찾아내었다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.04a
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• pp.232-236
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• 1996

This paper deals with an on-the-machine measurement method for roughness of ground surface by using flux ratio of scattered lights. A sensor and control unit is developed so as to e applied to surface grinding processes. The performance of the sensor is compared with that of stylus. The experimental investigation shows that not onlythe sensor has good performance as a surface roughness sensor but alsothe sensor is very useful for monitoring grinding condition in order to detect ill-conditioned grinding or dressing time.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1997.04a
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• pp.977-981
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• 1997

Because the chatter vibration is a main factor to damage on the quality, The cure is require peticually in cylinderical plunge grinding. The chatter vibration is with wheel speed, workpiece speed and infreed rate. Therefore, in this study, we expressed more credible chatter frequency in accordiance with wheel speed by FFT after accereleration sensing.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.107-108
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• 2006