Design And Analysis Of Filament Winding Machine For Composite Pressure Vessel

The composite pressure vessel is a kind of internal pressure product with high reliability.In order to make the wall uniform pressure of the container,the fiber composite material winding method can be used to reinforce the surface.This method is also widely used in the fields of high pressure and high reliability requirements in space,energy,chemical,metallurgy and so on.The filament winding of composite pressure vessel is completed by filament winding machine.In the work of the filament winding machine,the line type,the winding precision and the control of the winding tension directly affect the mechanical properties of the pressure vessel after the pressure,so the working performance of the winding machine directly determines the bearing capacity and reliability of the filament wound composite pressure vessel.The domestic CNC filament winding machine is restricted by the production capacity of control technology and equipment.The technical level of this kind of equipment is limited to the range of four axis linkage,and the degree of automation is low,the adaptability and flexibility of products are poor,and the quality of high performance and complex structure fiber winding composite products can not be guaranteed.At present,the high precision CNC winding machine(above three axis linkage)is mainly used to purchase foreign equipment.The large fiber winding equipment,especially the above five axis linkage equipment,has strict export restrictions to our country.In view of the above problems,the paper takes the composite material pressure vessel filament winding machine based on the six degree of freedom robot platform as the research object.In addition to the spindle rotation,the filament winding process is completed by the robot and the shape of the winding product is not fixed.The winding stability is good,the precision is high,the efficiency is high,and the cost is low.The following contents are mainly studied:Firstly,the structure design of the main parts of the fiber winding machine for the composite pressure vessel based on the six axis robot platform is completed,and the three-dimensional solid digital model of the whole machine is established.Second.The winding line and the trajectory point trajectory of the composite pressure vessel geodesic are analyzed.The winding trajectory of the robot windingequipment is calculated and the motion state of the winding equipment under the different constant free fiber length is analyzed.Third.On the basis of the calculation of the filament winding track,the dynamic calculation model of the filament winding machine based on the robot platform is set up with the help of ADAMAS software,and the dynamic effect of the inner joint of the robot winding equipment is calculated and analyzed under the action of filament winding tension,and the winding performance of the winding equipment is tested before the product is formed.Fourth.Taking the ANSYS Workbench software as the platform and taking the dynamic calculation results as the load boundary,the transient dynamic calculation of the strength and stiffness of the key parts of the robot filament winding equipment is calculated,and the bearing capacity of each component under the action of dynamic load is tested.