1Research status and application progress of lower limb rehabilitation exoskeleton robotsLI Chang, ZHENG Yi, WANG Youqiang, LIU Kunhua, WANG Feiyang, WANG DengzeReview1-16,522Numerical simulation and process parameter optimization of warm forging for spiral bevel gearsWANG Lixiang, JIANG Chuang, DENG Jing, ZHAO BoTheory·Research17-243Research on the transmission law of machine tool errors and gear helix deviations in the process of throughfeed rollingMA Ziyong, YANG Wei, WANG Zilong, HU Qingyuan, ZHU YungaoTheory·Research25-344Study on dynamic modeling and transmission characteristics of inverted planetary roller screw mechanismFENG Weidong, WANG Shisong, DENG Xingqiao, WU Guicheng, ZENG Liyuan, CAI DajingTheory·Research35-41,565Calculation method for time-varying meshing stiffness of cracked gears based on extended cantilever beam modelLIU Zongyao, WANG Yutong, LI Jiabao, FENG Wei, LIU BaoguoTheory·Research42-486Research on load distribution optimization of main bearing of shield machine based on nonlinear spring contact force modelMA Caibing, CHEN GuanciTheory·Research49-567Heuristic RRT algorithm based on collision-free channels for manipulator path planningYAO Boliang, LIU Fang, SUN Teng, YANG JiyiTheory·Research57-62,958Design and analysis of a new type of tower-shaped circular deployable and foldable mechanismMAO Yi, WANG Rugui, YU Yiyin, DONG YaoDesign·Calculation63-699Motion decoupling design and kinematics analysis of a variable topology mechanical legCHENG Yuelin, LI Ruiqin, GUO Wenxiao, LI Hang, PAN WuxingDesign·Calculation70-7910Design and analysis of mobile robots for complex terrain environmentsLIN Di, LI Ruiqin, HU Weiwei, NING Fengping, ZHANG LeiDesign·Calculation80-87,12011Structural design and analysis of minimally invasive surgical instruments with composite cable-drivenLIANG Ke, YI Chengxiu, LIANG Kun, SU TiechengDesign·Calculation88-9512Design and research of the walking mechanism of a variable telescopic wheel-legged robotMAO Xinming, BAI Jinwei, CHI Jinling, LI Zhe, GAO JiaxinDesign·Calculation96-102,17613Design and motion analysis for a bipedal wall-climbing robotPENG Shuochen, LIU Chunhua, YE Pan, QIN HanhaoDesign·Calculation103-11314Optimization design of parameters of the stacked compound planetary gear train for helicopter main gearboxesBAI Lianghe, ZHU RupengDesign·Calculation114-12015Research on indentation rolling resistance of conveyor belts based on Hertzian contact theoryJI Bin, YAO Yanping, ZHOU Lidong, HAN Gang, ZHANG WenchaoTest·Analysis121-12716Comparison of contact strength calculation of spiral bevel gears based on HB,ISO and AGMA standardsWANG Qiuju, WEI Jing, CHEN Siyu, XING Bin, SONG Zhenhai, TAN YuxinTest·Analysis128-14017Fault diagnosis of high-speed train rolling bearings based on dual time-frequency transformationLIU Yuheng, SUI Jiangtao, ZHANG Xiaoning, CAO JingchenTest·Analysis141-14718Simulation study of rolling-slip and temperature rise characteristics of cylindrical roller thrust bearingsJIN Liunan, LI Lun, XUE Yujun, HUANG Wei, LI YuchuanTest·Analysis148-15719Study on force transfer performance of spiral convection magnetorheological dampersLÜ Weijie, LUO Jiahao, ZHANG Guang, CHEN Junyu, SUN Min, LUO XiangDevelopment·Application158-16620Fault diagnosis of low-speed and heavy-load bearings based on STFT-SE-ResNet18 modelZHENG Xin, SUN Xianbin, YIN Gang, KONG LiyaDevelopment·Application167-176 