Design And Research Of The Multi-Station Stamping Die For The Bending Chain Plate Of The Pin-and-Holding Chain

The stamping and forming of the pin-helix chain plate has four processes: blanking,bow bending,U-bending forming and punching.The traditional method is mostly single-machine single-station stamping production with manual feeding,which has low production efficiency,low safety performance,and manpower.Disadvantages such as large investment in resources.In response to the production requirements of a chain manufacturing company,the paper puts forward a set of design schemes for multi-station stamping mold for pin-bonded chain bending chain plates,consisting of a bow bending station mold,a U-bend forming station mold,and a horizontal punching station mold.composition.The use of multi-station stamping molds in conjunction with storage devices and feeding devices realizes the automated production of pin-and-closed chain and bent chain plates,improves production efficiency,and ensures the reliability of the quality of bent chain plates.The stamping production of the plate provides a reference and has important research significance.The main research contents of the thesis are as follows:(1)According to the stamping process analysis and stamping forming process of the pin-bonded chain bending chain plate,the scheme design of the multi-station stamping mold is proposed.(2)According to the analysis of the arch bending process,the structure design of the arch bending station mold.It mainly includes bending concave and convex molds,positioning devices and ejector devices.Solidworks is used to complete the modeling,and Workbench is used to numerically simulate the stamping process of the bow-shaped bending station mold to verify the size of the bow-shaped bending parts formed by the simulation stamping.Whether it meets the process requirements.(3)According to the U-bend forming process analysis,the structure design of the U-bend forming station mold is carried out.It mainly includes forming punches,concave mold floating blocks,and unloading devices to complete the design and calculation of key dimensions of the mold.Solidworks is used to complete the modeling.Based on the orthogonal experiment,the 16 sets of Workbench simulation results are processed by the comprehensive weighted scoring method,and the range analysis and variance analysis are performed to determine the fillet radius,the unilateral gap of the concave and convex mold,and the maximum compensation rebound angle.Best combination of parameters.(4)According to the analysis of the punching process,design and calculate the size of the edge of the concave and convex mold and the gap between the concave and convex molds,and complete the structural design of the horizontal punching station mold.The horizontal punching station mold mainly includes concave and convex molds,punching devices,pressing devices and ejecting devices.The punching process is numerically simulated based on DEFORM finite element software,and the mold wear,punching force,and punching parts in the punching process are studied.The change trend of stress and strain.The unilateral blanking gap is used as a variable to study its influence on the section quality,mold wear and blanking force,and the reasonable blanking gap is determined by combining the blanking work.(5)According to the design of the multi-station stamping mold,simulation results and mold parts processing requirements,complete the processing and installation of the mold prototype,and debug the use of the automatic feeding device and the multi-station stamping mold.In the debugging process,the surface of the pin-bonded chain plate after U-bending is formed,and the surface is dented,and the 90-degree bend is dented,and solutions are proposed;the finished product is processed on the basis of the continuous stamping of the multi-station stamping mold.Check to determine the feasibility of the mold.