통합 검색 | Korea Science

이규호;김우형;정진태
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2006년도 춘계학술대회논문집
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- pp.266-270
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- 2006
Noise reduction the noise of a high precision multi-stage gearbox applied at the industrial robot is investigated by experiment such as the modal test and the signal analysis. The signal analysis performed with the waterfall plot representing the power spectrum as a function of the rotating speed. An eccentric load is installed at the gearbox in order to organize similar condition used in the industrial robot. Exciting sources are found out by the waterfall plot, and then the main factor to make the noise is distinguish. For the low-noise gearbox, the gear design parameter is modified and this gearbox is experimented in the same procedure. The results of the test show the noise level of gearbox reduced.
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지해영;김재철;이동형;문경호;이강호
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2012년도 추계학술대회 논문집
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- pp.169-174
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- 2012
Reduction unit is one of the most important components for railway vehicle because torque of motor must be transmitted to wheels of vehicle by reduction unit. However, According to advanced studies, it has been often broke down due to the damage, fatigue and wear of gear. To solve this problem, defect diagnosis methods of gear have been mainly using the vibration diagnosis technology through vibration waveform and frequency analysis. However, We should know vibration characteristics of normal state reduction unit prior to defect diagnosis. So in this paper, We had analyzed vibration characteristics of reduction unit in order to utilize monitoring system development. Comparison of targets is the vibration characteristics of normal state reduction unit about Electric Multiple Unit(EMU) and the High-speed trains(KTX, KTX II).
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김성용;이창우
- 한국기계가공학회지
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- 제13권6호
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- pp.99-103
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- 2014
A hypoid gear is a type of spiral bevel gear whose axis does not intersect with the axis of the meshing gear. The size of a hypoid gear is compact and the ratio of contact is high; therefore, the noise is lower than in other types. Due to these characteristics, the hypoid gear is commonly used in manufacturing processes such as those of escalators and subway screen doors. The purpose of this paper is to develop a reducer using the hypoid gear. In order to check the stability of the proposed reducer, 3D modeling is carried out by CATIA, and a structural analysis is performed using FEM (a finite element method).
https://doi.org/10.14775/ksmpe.2014.13.6.099 인용 PDF KSCI

노수영;남원기;강현국;김남일;김영탁;오세훈
- 동력기계공학회지
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- 제10권4호
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- pp.181-186
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- 2006
In this paper, a noncontact type torque meter using silicone rubber to measure the exact torque value and reduce a vibration and a noise, was developed. When planetary gear speed reducer runs, torque, RPM etc.. of motor change according to load or speed change. So, it needs a device to detect load's change or to diagnose the state of thewhole drive department by monitoring these result values. The noncontact type torque meter using silicone rubber that we're trying to develop this time is low-cost and can measure RPM and torque value simply. Also, it caculate a power using this value and indicate them on screen.
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김우형;정진태
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2004년도 추계학술대회논문집
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- pp.875-878
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- 2004
The noise and vibration diagnostic of the industrial robot reducer is ultimately the purpose. We evaluated a noise and vibration tendency of the industrial robot reducer to be made in the outside (RV reducer) through the experiment. Also, we compared the RV reducer to the industrial robot reducer (RD reducer) in the domestic. We measured the noise level with the sound level meter and analyzed the vibration tendency with the waterfall plot. Through the comparison of RV reducer and RD reducer diagnose the industrial robot reducer. We guessed the improvement direction of RD reducer. (The domestic's industrial robot reducer).
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