The Research On Steel Bending Technology And The Design Of Bending Machine For Space Shape Split Heads

The steel bar stool is a kind of support which is widely used in the reinforcement layer of the structural reinforcement project.As the existing steel bar stool bending equipment can only be used to bend the flat stool component,the production of the space stool is completed mainly in the artificial fold Bending way,which is an artificial bending steel bar stool production method existing in the poor working environment featured by problems such as low production efficiency,labor intensity,etc..This topic intends to design a way to complete the coil steel straightening,automatic feeding,steel fixed length cut off and space stool bending in one of the space stool bending machine.The main research contents are as follows:(1)According to the production process steps of the steel bar stool,the overall scheme of the design of the club bar bending machine is designed.Based on the theory of elastic deformation of steel bars,the mechanism of bending and straightening deformation of steel bars is analyzed.By comparing and analyzing the advantages of each reinforcement and bending scheme and the defect,this paper chooses the most suitable for this topic space stool bending machine steel straightening and bending of the program.(2)Based on the steel bending scheme,a mathematical analysis model of the bending of the steel bars was established,and the selected grade ? steel bars were selected and the steel bars were selected as the steel bars.Mechanical parameters into the model,calculate the bending moment required bending and bending force.The steel is defined as the theoretical elastoplastic material,and its 90 ° bending spring back angle is analyzed and calculated.(3)In order to obtain more accurate bending and unloading resilience of steel bars,the relevant design parameters of steel bending mechanism are optimized,and the bending test is carried out to detect the size of bending force under the condition of different corner fillet and die gap,And the 90 ° bending unloading springback of the steel bar is tested,and the reasonable bending parameters are selected as the design basis of the steel bending mechanism.(4)Using NX UG8.0 to design the space stool bending machine key implementation and the key parts,and the important parameters of the calculation and verification.The virtual modeling and assembling of the machine are completed,and the whole machine assembly model is analyzed and analyzed by interference.(5)According to the space stool bending machine work in the process of steel straightening,fixed length cut off,brace bending,steel bar stool bending feet and other parts of the work of the order of the implementation of the implementation of the components of the timing of the design,The work process to do a sports simulation analysis.(6)Based on the action sequence and action time of the moving parts of the club,the PLC logic control program is designed and programmed,and the PLC program is simulated in the S7-200 simulator.The simulation results meet the expected design requirements,Verify the correctness of the control flow.