| Diamond circular saw blade is mainly used for processing brittle materials such as stone.Its diameter is much larger than the thickness.According to its typical thin plate structure,the stiffness has limited,and its quality directly affects the production cost.The noise produced during the working process of a diamond circular saw will seriously affect the health of the operator.In addition,the working environment of saw blades is mostly bad.If the fracture occurs during the working process,it will threaten the safety of life and property of the staff to a large extent.In this thesis,the structural statics of the diamond circular saw blade was analyzed.The strain of different kinds of diamond circular saw blades under external load was measured by experiments.The influences of various parameters on the stiffness of diamond circular saw blades were investigated by comparing the strain results of diamond circular saw blades with different parameters.Then the ANSYS was used to topologically optimize the saw blade in order to find the noise reduction scheme of the diamond circular saw blade.The research content was divided into the following three parts.(1)The strain analysis of diamond circular saw blade.The strain of different kinds of diamond circular saw blades under different external forces were measured by DH3818 static stress and strain tester.The experimental data showed that,with the increase of the external load,the strain of the diamond saw blade was also increasing,and in the case of the same number of teeth,the stiffness of the diamond circular saw blade was proportional to the diameter and in the same diameter,the stiffness of the diamond circular saw blade was inversely proportional to the number of teeth.By orthogonal experiment,by analyzing the R value,it could be concluded that the influence of the diameter of teeth on the stiffness of the diamond circular saw blade was greater than that of the tooth number.(2)Three dimensional modeling of diamond circular saw blade was established by 3D modeling software SolidWorks.The static structural analysis of diamond circular saw blade was carried out by using the structural static analysis module of ANSYS.The strain of diamond matrix under different loads was extracted.Compared with the strain test results obtained by static test,the relative error of the results was very small and within 5%,which proved the correctness of the model established by the finite element method.Therefore,the model could be used to replace the test for further analysis of diamond circular saw blades.(3)Optimum design of diamond circular saw blade.Using the topology optimization function of ANSYS,topology optimization of 3D model of diamond circular saw blade was carried out.According to the optimization results,the position of the hole on the saw blade matrix and the shape of the hole were determined,and a new diamond circular saw blade was developed.After experimental measurement,compared with the hole less saw blade,the new developed structurestill met the stiffness requirements,and the maximum noise of the saw blade can be reduced by 5.08%after the optimization.By analyzing the structural static characteristics of diamond circular saw blade,the work in this thesis paper provides theoretical basis and data reference for the design of saw blade.The successful application of topology optimization method has certain reference value for the production of saw blade. |
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