Design And Performance Analysis Of Hollow Flexure Hinge Based On Space Curved Beam

It is a fact that flexible hinges transmit force and displacement through the elastic deformation of their own material.Compared with traditional rigid hinges,it has the advantages of no gap,no friction,less assembly and easy control.It is therefore widely applied in different fields,such as bionic machinery,medical devices and robotics,etc.In this paper,a hollow flexible hinge is investigated.Based on a combination of spatially curved beams makes it possible to have six degrees of freedom in six directions.The internal hollow position allows for the installation of drive components,wires,etc.It is widely used in soft robots,dexterous joints and other multi-degree-of-freedom highly flexible actuators.Obviously,there is a broad development prospect.The details of the work are as follows.(1)Is a fact that flexible hinges transmit force and displacement through the elastic deformation of their own material.Compared with traditional rigid hinges,it has the advantages of no gap,no friction,less assembly and easy control.It is therefore widely applied in different fields,such as bionic machinery,medical devices and robotics,etc.In this paper,a hollow flexible hinge is investigated.Based on a combination of spatially curved beams makes it possible to have six degrees of freedom in six directions.The internal hollow position allows for the installation of drive components,wires,etc.It is widely used in soft robots,dexterous joints and other multi-degree-of-freedom highly flexible actuators.Obviously,there is a broad development prospect.The details of the work are as follows.(2)It is a fact that flexible hinges transmit force and displacement through the elastic deformation of their own material.Compared with traditional rigid hinges,it has the advantages of no gap,no friction,less assembly and easy control.It is therefore widely applied in different fields,such as bionic machinery,medical devices and robotics,etc.In this paper,a hollow flexible hinge is investigated.Based on a combination of spatially curved beams makes it possible to have six degrees of freedom in six directions.The internal hollow position allows for the installation of drive components,wires,etc.It is widely used in soft robots,dexterous joints and other multi-degree-of-freedom highly flexible actuators.Obviously,there is a broad development prospect.The details of the work are as follows.(3)Three different algorithms were selected: Genetic algorithm,Pointer algorithm,and simulated annealing algorithm.The three algorithms were used to optimise the edge length,maximum stress and maximum displacement of the hollow flexible hinge section.The results of the three different algorithms are then compared and the final choice of edge lengths for the moment section is 1.58 mm and 1.65 mm.Optimisation of stress concentration problems by adding rounded corners to stress concentration areas The maximum stress in the stress concentration area is minimised when the radius of the corner is 0.931 mm,as calculated by the multi-island genetic algorithm.The optimised hollow flexible hinge is then experimentally verified.