Layout optimization of clearance guide rail for beam of a certain type of sawing and milling machine
In order to meet the precision machining requirements of a certain type of sawing and milling machine,the influence of rail clearance and movement speed changes on the deformation of the beam during the feeding process is considered,and the improvement scheme of rail layout is proposed.The assembly mode and stress process of the beam are analyzed,and the three-dimensional model of the beam of the saw milling machine is simplified.Consider-ing different guide rail layout,the static simulation analysis of the simplified model is carried out,and the maximum deformation of the beam is obtained when the beam is fed to the farthest end.Considering the influence of the gap on the existing guide rail layout,the rigid flexible coupling motion simulation analysis is carried out.It is concluded that the gap value has an impact on the transverse deformation of the beam.The greater gap value between the guide rail and the slider,the more obvious the transverse deformation of the beam,and the less impact on the longitudinal de-formation.Considering the actual working situation,under the premise of the clearance between the guide rail and the slider is 0.03mm,the dynamic simulation analysis of four guide rail layout modes is carried out,and the deform-ation curves at four measuring points of the beam are obtained.The results show that:the arrangement of the beam up and down can effectively reduce the deformation of the beam in the process of feeding,and the static structure is stable.The shape variable of the beam feeding to the farthest end is small,which is better than other schemes.The research results provide reference for the design and manufacture of saw milling machine.
saw milling machinebeam deformationclearanceguide rail layoutfinite element analysis