Researches On Characteristics Of Loads Of Diamond Frame Saw And Designing Of Rack Components

Diamond frame saw is an important machine for manufacturing stone slabs.As the largest component and "skeleton" in the diamond frame saw,the designing and structure of rack components decided the working performance and safety of diamond frame saw.The structural design,static and dynamic analysis,structural optimization of frame components will be discussed from the perspective of security and process.Guidance will be provided for the design and manufacturing of rack components to improve the competitiveness of the industry.To obtain loads acted on the rack,the amplitude and characteristics of sawing forces of frame saw were studied,and a predict model was established.The reason of the limitation of sawing performance of diamond frame saw was analyzed from the perspective of kinematics and structure.The critical load of saw blade instability was calculated and the process parameters were optimized.Meanwhile,the transfer path and amplitude of load were analyzed,and a new support guiding mechanism is proposed according to the requirements of structural strength and safety.The designing of the frame component is carried out based on the requirements of static and dynamic performance.The joint characteristics of the rack components were obtained by theoretical calculation on the basises of the Yosho method,and the finite element model of the frame components was established.The deformation,stress distribution and low-order mode of the rack component were obtained through the static and dynamic simulation.The results of static and dynamic simulation showed that the designed rack component meet the requirements of static characteristics and has good dynamic performance.The weak points in the rack components are identified,which provides the basis for the improvement of the static and dynamic performance of the rack components.Topological optimization was carried out on the basises of the variable density method to reduce the strain energy and stress.After the removal of redundant materials,the material distribution scheme was applied to the structural design of the top beam component by the adding of reinforcing bars.After that,the statistical model of the system response of the top beam component was established with the mass,stress and deformation as the objective functions based on the response surface method and the optimal design parameter solution set of the top beam component was obtained.The comparison with the original structure scheme showed that the static and dynamic performance of the rack components after optimization was improved significantly.Theoretical guidance and reference for the design of frame components and similar structures were provided,and the researches played promoted the efficient development of stone industry.