The Study On Virtual Prototype And Manufacturing Technology Of Multi-axis 3D Loom

In the industrial field,the application of materials is more and more extensive,and the following is the high requirements of the physical properties of the material.As one of the important branches in the field of composite materials,fiber reinforced composites have been paid more attention by people for their excellent physical properties.Woven and braiding as a two form of preform components of fiber reinforced composites,play an important role in fiber reinforced composite preform.Two kinds of forming methods used in the fiber reinforced composite preform,which will meet the requirements of the composite material on isotropic and anisotropic in this paper,we design a multi axis 3D fabric preform with weaving and braiding,and design a multi axis 3D loom for weaving this type of fabric.In this paper,the 3D modeling and design software Pro/E is used to model the main mechanisms of the three-dimensional multi axis loom and the entity modeling and virtual assembly.Multi-body dynamics simulation software ADAMS is used to simulate relevant mechanisms,get the kinematic parameters of the mechanisms,and the related mechanical structure is calculated by the finite element analysis software ANSYS/Workbench,obtain postprocessing results.According to the design requirements,the optimal design of the mechanism is realized.The CAD/CAE software,with the help of general data interface,realize the data exchange between each other,complete the design,simulation and optimization.This article is about the study on multi axis three-dimensional loom,and the main contents are as follows:The first,the multi axis(five axis)three-dimensional fabric structure is designed,which include the three axial woven and two axial braiding.On the basis of this,the weaving principle and process of multi axis 3D fabric is designed.The second,the oblique yarn mechanism is designed and studied.The oblique yarn braiding motion mechanism as a main part,which the yarn carriers carry the yarn regularly motioning along the two directions in the braided tray,realize oblique yarn braiding process.At the same time,the structure of the solenoid valve is designed,and the electromagnetic module of the finite element calculation software ANSYS/Workbench/Ansoft is used to calculate the electromagnetic force.The third,in the simulation software ANSYS/Fluent environment,the main nozzle flow field,the auxiliary nozzle flow field,and the main nozzle and relay nozzle system flow field of traditional two-dimensional air jet loom is modeled and simulated,and the optimum parameters of weft insertion flow and the optimal results of the relay nozzle position are determinated.Based on this,a multi layer air jet weft insertion mechanism is designed,and the relevant parameters are verified by means of fluid simulation software.The fourth,the design and calculation of other major mechanisms of the multi axis three-dimensional loom is processed in the multi body dynamics simulation software ADAMS to verify the structural parameters,which include the beating up mechanism,let-off and yarn lifted mechanism.Finally,the virtual prototype of multi axis 3D loom is completed in the 3D modeling software Pro/E.