Research On The Key Technology Of Innovative Design Of New Combined Structure Saw Blade

In this paper, according to the market demand to large breadth surface stone products, the saw blade was divided into supporting function module, driving function module and cutting function module based on the innovation design principle and function analysis of saw blade. The design project was brought forward by analyzing, innovating and reconstructing the different function modules. The finite element analysis was applied to study load, deformation and stress distribution of new combined structure saw blade in working, to analyze its low model shape, inherent frequency, which influenced its application effect. Finally, the new combined structure saw blade was optimized based on the analysis data.The structure analysis and mode analysis of new combined structure saw blade were carried out, On the other hand, the finite element analysis of holistic diamond saw blade that is used widely was carried out compared and contrasted with new combined structure saw blade. The results indicate: the low rank modes of the two kinds of diamond saw blades locate in the same order of magnitude and there was no much difference in values. Furthermore, the stress distributing is similar. All these data show that the new combined structure saw blades have the similar machining capability with the common diamond saw blades that have the same diameter and can satisfy the machining quality request generally.In order to deal with the residual stress of body of new combined structure saw blade, the thermal stress analysis was carried out. The analysis results show: the influence by temperature of new combined structure saw blade is stronger than common diamond saw blade, and bigger thermal stress came into being. The temperature distribution in saw blade body is even. Based on the third intensity theory, the thermal stress does not exceed the range of safety permissible stress of material. The value of stress is bigger in weld of body and agglomeration and in edge of agglomeration. So the residual stress must be dealt with before the saw blade is used. The thermal stress analysis offers detailed residual stress distribution status of saw blade, and also offers theory reference for tensity handling of new combined structure saw blade.The optimum design was carried out combined with the results of structure analysis and mode analysis. The structure analysis and mode analysis aim to realize the application capability and dynamic capability, and offer dada reference for optimum design of new combined structure saw blade. Based on the different state variables, three optimum designs were carried out. Considering the first rank inherent frequency of new combined structure saw blade, the optimization results were taken out. Compared with the original design, the value of optimization reduced 3kg, more importantly, the first rank inherent frequency is increased, and the deformation and most equivalent stress decrease. So the application capability and dynamic capability of optimization saw blade were improved.In order to validate the finite element analysis results and ulteriorly investigate thedynamic capability and application capability, the stress analysis experiment, mode analysis experiment and temperature check experiment were designed.The cutting range of new combined structure saw blade can reach 2/3 of its diameter, and it can be directly applied to common disc saw machine, that guarantees the compatibility with original equipment and expands the range of application. So the common disc saw machine can incarnate the characters of low cost and high efficiency in cutting large breadth surface stone product, and the new combined saw blade has strong vitality in market.