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Lee, Chong-Won;Oh, Se-Hoon;Kim, Jun-Cheol;Jeon, Han-Su
- Transactions of the Korean Society of Mechanical Engineers A
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- v.21 no.7
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- pp.1166-1173
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- 1997
Due to progress in manufacturing techniques, the performance of the harmonic drive has been improved but not sufficiently. One of the important problems which the current harmonic drive has is that while there is the potential for having a wider tooth contact area, the total number of teeth engaged simultaneously is still small. This is mainly due to the involute tooth profile. Hence, in this study, the cycloid-type tooth profile is developed to improve this problem. This paper represents the design methodology and performance evaluation f the cycloid-type harmonic drive. Cycloide tooth profile was derived by analyzing geometry of the tooth engagement and the contact mechanisms of the tooth which were examined and analyzed by load analysis. The stress due to elastic deformation of a flexspline was also obtained by approximate formula and computer analysis. Finally, the cycloid-type harmonic drive with 1:100 speed ratio was manufactured and the performance of the harmonic drive was evaluated.
https://doi.org/10.22634/KSME-A.1997.21.7.1166 인용 PDF

Nam, Won-Ki;Kook, Chang-Ho;Ham, Seong-Hun;Jang, In-Hun;Oh, Se-Hoon;Sim, Kwee-Bo
- Journal of the Korean Institute of Intelligent Systems
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- v.17 no.7
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- pp.952-956
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- 2007
In industrial site, as the technology of FA developes, many robots can take the place of human labor. Generally, robots require high precision reducers which have cycloid or involute tooth profile. These reducers provide high reduction ratios with low backlash and high accuracy but need a high stiffness of tooth. In this study, to improve the high precision, the cycloid reducers which have straight line teeth profile are used. Also the FEM analysis, which consist of straight line teeth profile, was performed to simulate the stress of teeth profile.
https://doi.org/10.5391/JKIIS.2007.17.7.952 인용 PDF KSCI

Ham, S.H.;Nam, W.K.;Oh, S.H.
- Journal of Power System Engineering
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- v.14 no.3
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- pp.64-70
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- 2010
In this study, designing of precise linear transferring device which can be applied to industrial machine and robot industry has been introduced. The direction of power flow and output feature are similar to current Rack-Pinion type. However, unlimited length extensity via rack modulizing, and securing high velocity transportation have been realized by applying Pin-Pinion Gear type at the operation part. The analysis has been calculated to obtain the Pin-Pinion Gear's optimized tooth profile. As a result of research, it is impossible to control precisely even overlap at the teeth of involute and sprocket. Because they have peculiar gearing structure. Therefore, modified cycloid tooth has been proposed to perform high velocity, precise control without backlash.
PDF KSCI

김호룡;안승준
- Transactions of the Korean Society of Mechanical Engineers
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- v.17 no.1
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- pp.1-10
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- 1993
A design method of gear tooth profile which can reduce the noise of gear is studied. The tooth profile is generated by combining involute and cycloid tooth curves in which the involute tooth profile is near the pitch point and cycloid tooth profile at the addendum and the dedendum. Considering parameters which have an influence on the reduction of gear noise and building up a design conditions for the noise reduction of gear, the lower-noise combined gear tooth profile is designed. For the check of noise reduction of the combined gear profile, two pairs of combined profile gear, two pairs of involute gear, and a pair of cycloid gear were manufactured by the NC Wire Cutting Machine, and the experiment for measuring of gear noise was carried out on each pair. The noise reduction of the combined profile gear was obtained.
https://doi.org/10.22634/KSME.1993.17.1.1 인용 PDF