Design and Experimental Research of RV Reducer Main Bearing Test Benches

doi:10.3969/j.issn.1004-132X.2025.08.010

Abstract

Abstract:

In order to obtain the overturning stiffness and fatigue performance of RV reducer main bearing， a main bearing test bench was developed， which might accurately measure the overturning stiffness and fatigue life of RV reducer main bearings. The working principle and detailed structure of the test bench were emphatically introduced. The main bearing test bench consisted of mechanical systems， electric control systems and measurement software. The overturning stiffness of RV-125N reducer with different main bearing preloads was tested， and the fatigue test of RV-125N reducer with main bearing preload of 0.06 mm was carried out， and the failure mode and principle of the main bearing after the fatigue test were discussed. A three-dimensional analytical model of the RV-125N reducer was developed based on the experimental conditions in Masta software， and the life of the main bearing of RV-125N reducer was simulated and analyzed， and the simulation results show that the theoretical lifetime is 89% of the actual lifetime. The development of the test bench solves the problems of inaccurate overturning stiffness tests of the main bearings and the difficulty of fatigue life verification，and provides theoretical value and practical application value for the design and manufacture of RV reducers.

Key words: RV reducer, main bearing, overturning stiffness, fatigue life

摘要：

为获取RV减速器主轴承的倾覆刚性和疲劳性能，研发了主轴承试验台，可以准确测量RV减速器主轴承的倾覆刚度和疲劳寿命。重点介绍了该试验台的工作原理和详细结构，主轴承试验台由机械系统、电控系统和测量软件组成。测试了RV-125N减速器不同主轴承预紧量的倾覆刚性，并对主轴承预紧量为0.06 mm的RV-125N减速器开展了疲劳试验，讨论了疲劳试验后主轴承的失效模式与失效原理。在Masta软件中建立基于实验状态的RV-125N减速器三维分析模型，仿真分析了RV-125N减速器主轴承的寿命，仿真结果表明其理论寿命是实际寿命的89%。该试验台的开发解决了主轴承倾覆刚度测试不准、疲劳寿命验证困难的问题，研究结果对RV减速器的设计与制造具有一定的理论价值与实际应用价值。

关键词: RV减速器, 主轴承, 倾覆刚性, 疲劳寿命

CLC Number:

TH132.46

Qingwang ZHU, Jing ZHANG, Faxiang XIE, Zhonggang ZHU, Jianyu GUO, Houlin YAN. Design and Experimental Research of RV Reducer Main Bearing Test Benches[J]. China Mechanical Engineering, 2025, 36(8): 1749-1756.

朱晴旺, 张靖, 谢发祥, 朱忠刚, 郭剑禹, 严厚林. RV减速器主轴承试验台研制与实验研究[J]. 中国机械工程, 2025, 36(8): 1749-1756.

Figures/Tables 17

Fig.1 schematic diagram of RV reducer main bearing force

Fig.2 Sketch of RV reducer main bearing test equipment

Fig.3 Experimental process of RV reducer main bearing test bench

Fig.4 The overall structure of the test bench

Tab.1 Hardware and software configuration of test bench

配置名称	供应商	型号
上位机软件	台达	DIAView SCADA
PLC	台达	DVP-32EH00T3
伺服电机	汇川	MS1H2-40C30CD-T331Z
驱动器	汇川	SV630PT017I
温度传感器	扬子	WZP-290
铁粉浓度计	新宇宙	SDM-72
力传感器	宇航	YFLH-4B
倾角仪	瑞芬	ACA616T

Fig.5 Design of power mechanism

Fig.6 Design of loading mechanism

Fig.7 Software module interface of main bearing fatigue test

Fig.8 Software module interface of RV reducer stiffness test

Tab.2 Performance parameters of RV-125N

减速器型号	RV-125N
减速比	111
额定扭矩/（N·m）	1225
额定转速/（r·min^-1）	15
容许力矩M/（N·m）	3430
主轴承接触角/ （°）	40
倾覆刚度/（N·m·（'） ^-1）	>1600
钢球数量	36
钢球直径/mm	11.113
主轴承额定动载荷/kN	43
主轴承额定静载荷/kN	53.8

Fig.9 RV reducer main bearing test bench

Fig.10 Overturning stiffness data of different main bearing preloads

Fig.11 Relation between RV-125N output shaft angle and overturning stiffness

Fig.12 Relation between iron powder content， temperature rise and fatigue life of RV-125N

Fig.13 Main bearing fatigue failure of RV-125N reducer

Fig.14 Masta simulation model of the RV-125N reducer

Fig.15 Relation between main bearing preload and RV-125N fatigue life

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