Structure Design And Analysis Of Lightweight Friction Stir Welding Machine

Friction stir welding,as an advanced solid-phase connection technology,provides a superior welding process for the welding of non-ferrous metal plates,and has obvious advantages in the welding of lightweight structures.Friction stir welding equipment is a machine similar to a CNC milling machine but is far more expensive than a CNC milling machine in terms of price.This study analyzed the mechanical load generated during the friction stir welding of thin-plate aluminum alloys.Based on the mass-produced CNC milling machine structure,it explored a method to reduce the manufacturing cost of light friction stir-friction welding equipment.This study helps to promote friction stir welding technology.Wider applications.Using vertical milling machine design and 3mm thick 6061-T6 aluminum alloy plate friction stir welding process and mechanical load test,by changing the speed and speed of the stirring head,welding speed,shoulder shoulder pressure and the inclination of the spindle,study different parameters butt welding the surface forming conditions of the joints and the influence of the mechanical properties of the welds determine the appropriate welding parameter window.Under this window,the axial and radial forces of the stirrer head during the welding process were measured.The torque received by the stirrer head,the axial force and the frictional torque of the stirrer needle were determined by theoretical calculations,and the light-weight friction stir welding was determined.The basic parameters such as axial force,radial force and maximum torque that the machine’s main shaft bears provide the basis for the structural design of the lightweight friction stir welding machine.Summarize and analyze the current structure of the friction stir welding machine and the requirements of each axis of the friction stir welding machine.Based on the basic parameters obtained from the experiment,the overall scheme of the aluminum alloy plate light friction stir welding machine below 3 mm thick is determined.The base,bed and workbench of CNC milling machines with similar structures and dimensions are combined with independently designed spindle components,spindle boxes,and connecting frames to effectively reduce the manufacturing cost and cycle time of the host.The three-dimensional design of the self-designed components was completed based on the basic parameters such as the axial force,radial force and maximum torque that the main shaft can bear,and the complete machine assembly was completed.The machine can adjust the tilting angle of the spindle by adjusting the position of the spindle box.The spindle can adjust the tilt angle of the spindle.By adding a numerically controlled rotating table,it can also weld flat circular or curved welds.Based on the welding process,the force of the light friction stir welding machine is analyzed to determine the main components and the force parts.The finite element analysis is performed on the main force components using ANSYS software,and the results are analyzed by stress and displacement maps.Its reliability;from the welding process can be seen as the main part of the main axis of the movement,its movement determines the results of the welding,so the use of Adams on the spindle component movement simulation,from the results of the movement analysis to determine the feasibility of the spindle components and mechanical system performance.