Lightweight Design Of Formwork Component Of Closing Mechanism Of Core Shooting Machine

The core shooter is widely used in the casting industry,but the template of th e core shooter clamping mechanism is generally thick,which wastes the materials.When the core shooter repeatedly shoots the sand core,the fatigue damage occurs.Therefore,the analysis to the finite element is carried out to determine whether the existing formwork meets the using requirements.The lightweight design of the three templates is carried out through the structural optimization technology to achi eve the requirements of energy conservation and emission reduction.In the process of research and analysis of the die closing mechanism of the c ore shooter,the three-dimensional model of the core shooter and the die closing m echanism is established by using SolidWorks.By introduing the working principle of the core shooter and naming of each part of the die closing mechanism,the co nnection relationship between them are pointed out.Secondly,the static analysis and fatigue analysis of the three templates of the die closing mechanism of the core shooter are carried out by using ANSYS Work bench software.The thermal stress and thermal mechanical coupling analysis are ca rried out for the dynamic template and the intermediate template connected with th e mold.The result shows that there is a lightweight space in the area where the s tress value and deformation are small,and the dynamic template and the intermedi ate template are generated by the high temperature mold Heat conduction and heat convection.The two templates produce large thermal deformation,which can be r educed by the structural optimization design of the template.Then,the topology optimization technology and response surface optimization t echnology are used to optimize the core shooter template.By analyzing the optimi zation results,the structure and parameters of the optimized template are obtained.The statics analysis and fatigue analysis of the optimized template are carried out.the result meets the technical requirements;the thermal stress and thermal mechani cal coupling analysis are carried out for the dynamic template and the intermediate template.The results show that the thermal deformation of the optimized dynamic template and the central template is reduced,and the lightweight design is comple ted.Finally,the prototype test is carried out.The parallelism of the moving formw ork and the central formwork is measured,and the results meet the technical requi rements.The newly assembled core shooter is used to make sand cores,and experi ments are carried out.The size,maturity and appearance of the shot sand cores ar e tested according to the requirements of the core making operation instructions.T he results show that the sand cores meet the technical requirements.According to statistics,the weight of side fixed formwork,moving formwork and middle fixed formwork is reduced by 28%,28.6%and 21.6%respectively,wit h a total weight reduction of 56.24kg.The weight of the three formworks is obvio usly reduced,and the main performance indexes of the formworks meet the technic al requirements.Therefore,the purpose of lightweight design of the formworks of t he core shooting machine clamping mechanism is achieved.