Research On The Mechanical Ruling Method Of Using The Main And Auxiliary Ruling Tools With Staggered Edges

Mechanical ruling grating has important advantages in the fabrication of gratings.However,the elastic-plastic deformation of the groove-shape after ruled has always been an important difficulty in the current research.So how to control the residual stress and spring back deformation of groove-shape is of great significance to improve the precision of groove-shape.Under the background of echelle grating in manufacturing,this paper studies the mechanical ruling method of the main and auxiliary ruling tool staggered edge(MARTSE).Firstly,based on the types and installation parameters of the tool,the slip line field model considering blunt round is introduced,and the ruled depth model of the chisel-edge is given.The mechanism of groove-shaped over-squeezing is introduced and the outline of groove-shape of main and auxiliary ruling tool(MART)is drawn.The spring back and the analytical modeling of residual stress in the ruled groove after the MART is expanded.The work hardening effect and the work hardening layer in the process of mechanical ruling are analyzed,and the empirical fitting formula between the work hardening layer and the surface microhardness is given.It provides theoretical and analytical basis for simulation and experiment.Secondly,the three-dimensional simulation technology of the mechanical ruling process of the MASERT,using the DEFORM-3D simulation software,.First,the paper analyzes the flow,residual stress,work hardening and tool wear of aluminum film material from the process of ruled depth combination of MART respectively,and obtains the optimal "depth combination scheme ".Then,the process of MARTSE method is analyzed.At the same time,the flow and residual stress of the material under the phenomenon of groove-shaped over-squeezing are analyzed.Aiming at the problems in the ruling method,the solution measures are put forward,and the solution measures are simulated and verified.Lastly,according to the ruling test,the MART holder is made,and the ruling test platform is built.Using laser diffraction tool setting device as the tool setting method.By means of laser confocal,scanning electron microscope and grating surface roughness measuring instrument,it is concluded that the achieved groove surface quality of the MART is better than that of the single ruling tool.According to the problems of the grooved surface after the MART mechanical ruling,the existing problems of the test platform are reflected,and a method for improving the test platform is given.The process of three-dimensional ruling is analyzed by two-dimensional method.The surface microhardness instrument is used to verify the correctness of the simulation analysis hardness.The wear area of ruling tool was detected by optical microscope,and the concentration of carbon elements on the surface of groove was analyzed by energy spectrum,which verified the correctness of simulation analysis of tool wear.In a word,the research in this paper plays an important role in enriching the technology of mechanical ruling grating.