Modal Analysis and Optimization of Typical Parts of 2K-V Reducer

Main Article Content

Linshan Han
Chenxu Cao
Wenhua Jiao
Zheng Wei


As a new type of high-precision gear transmission mechanism, the transmission accuracy of the 2K-V reducer will be greatly affected by vibration. With the RV110E reducer as the research object, a three-dimensional model of the needle wheel is established. Using the finite element analysis software, the natural frequency and mode shape of the needle wheel are calculated, when it’s under the output condition, then compared with the calculated gear meshing frequency. It is found when the needle wheel is used as an output, the vibration frequency is within the gear meshing frequency range, which is easy to cause resonance, thereby affects the transmission precision of the whole machine. The part of the outer shell of the needle wheel and the oil seal of the skeleton is the weakest and prone to deformation. By adding 6 reinforcing ribs between the needle wheel flange and the outer casing, increasing the flange outer diameter at the same time, the natural frequency can be increased, the deformation concentrated region can be transferred to the outer casing and the reinforcing rib. The connected parts avoid resonance and increase the service life of the needle wheel.

2K-V reducer, the needle wheel, modal analysis, the optimization design.

Article Details

How to Cite
Han, L., Cao, C., Jiao, W., & Wei, Z. (2019). Modal Analysis and Optimization of Typical Parts of 2K-V Reducer. Journal of Scientific Research and Reports, 23(6), 1-9.
Original Research Article


He W, Shan L. Research and analysis on transmission error of RV reducer used in robot [M]// Recent Advances in Mechanism Design for Robotics; 2015.

Bao J, He W, Lu Q, et al. Research of output-pin-wheel cycloid drive Reducer[C]// Wase International Conference on Information Engineering. IEEE Computer Society; 2010.

Li L, He W, Wang X, et al. The study on high-accuracy RV drive used in robot [J]. Journal of Dalian Railway Institute; 1999.

Shan L, He W. Study on nonlinear dynamics of RV transmission system used in robot joints[M]// Recent Advances in Mechanism Design for Robotics; 2015.

Huang J, Zhong JI, Duan HM, et al. Experimental modal analysis of the mechanical structure and typical applications [J]. China Measurement & Test; 2010.

Asparouhov T, Hamaker EL, Muthén B. Dynamic structural equation models [J]. Structural Equation Modeling A Multidisciplinary Journal. 2017;25(3):1-30.

Wei-Dong HE, Jiang ZB, Bao JH, et al. Crank shaft modal analysis of RV reducer [J]. Journal of Dalian Jiaotong University; 2011.

Bethune JD. Engineering design and graphics with solid works 2016 [J]. Pearson Schweiz Ag; 2017.

Lawrence KL. ANSYS Workbench Tutorial [J]; 2010.

Peng M, Yang X, Zhang H. Anti-rustiness and wear-resistance technology of Q235 steel and QT450-10 ductile cast iron by plasma penetrating [J]. Heat Treatment of Metals. 2012;37(5):106-110.

Schmitz TL, Smith KS. Modal Analysis [J]; 2019.

Wang J, Gu J, Yan Y. Study on the relationship between the stiffness of RV reducer and the profile modification Method of cycloid-pin wheel[M]// Intelligent Robotics and Applications; 2016.