Study On The Standardization Mechanical Coupling Stiffness Of Hydraulic Press Series

Hydraulic press is the foundation of manufacturing industry, along with the large ships,aircraft, nuclear power, chemical and other large projects in our country, how to make thehydraulic machine series, high stiffness, and light weight is particularly important. Based onthe Large-scale Six Axes Numerical Control Locomotive Gyratory Head Frame TypeHydraulic Press THP34Y-1000G, THP34Y-1500D as the prototype, the hydraulic machineseries equipment mechanical coupling stiffness were researched in this thesis.1. Analysis of typical sheet molding process. The method that the different position ofthe ship sheet is accurate pressed through controlling the mobile hydraulic pressure head andposition is put forward. The typical sheet is processed using the general mold, and through thedifferent capacity of press. All of it is a convenient to the process of ship sheet. On the basis,accurate requirements to hydraulic press are advanced.2. The stiffness of Frame Type Hydraulic Press with Large-scale Six Axes NumericalControl Locomotive Gyratory Head is tested through element analysis and test. With thecoupled stiffness analysis method, to build parts, mold and the hydraulic press, transfer thedata to the analysis software. Using lacer tracker to test the stiffness of Frame Type HydraulicPress with Large-scale Six Axes Numerical Control Locomotive Gyratory Head. The stiffnesstesting data is obtained. Two kinds of methods for hydraulic machine stiffness analysis resultswere highly consistent, with error less than10%. The reliability of the element analysis tohydraulic press is verified. So more extensive and accurate database could be provided fromfinite element analysis.3. According to the finite element analysis and the prototype test results ofTHP34Y-1000G hydraulic machine, the deformation of the upper beam and lower beam isanalyzed, regarding to the structural stiffness and pre-tightening. The deformation ofhydraulic machine under different load is regressed by nonlinear curve equation, and theequation is verified in THP34Y-1500D. The regression equation can be used to predict thestiffness of hydraulic press.4. According to the optimization parameters of sensitivity analysis to Hydraulic Presswith Large-scale Six Axes Numerical Control Locomotive Gyratory Head. Using parts, mold,equipment coupled stiffness analysis method, establishing parameter finite element analysismodel of host, the stiffness sensitivity and the quality sensitivity of upper beam and the lowerbeam are analyzed. Comprehensive quality sensitivity and stiffness sensitivity, with the goalof small quality and large rigidity, the significant key structural parameters on the quality andstiffness are extracted.5. Based on the parts-mold-frame fuselage stiffness analysis, through establishing themodel of artificial neural network, the structure optimized. Based on the integrated sensitivity on the Hydraulic Press with Large-scale Six Axes Numerical Control Locomotive GyratoryHead THP34Y-1000G, four key parameters of upper and lower beams are presented: the ribof the upper beam, the side plate of the upper beam, the rib of the lower beam, the side plateof the lower beam. And add the load and the press head position to the4elements, five levelsorthogonal experiments. Then the hydraulic press is structural optimized. The hydraulic pressnot only reaches the light heavy, at the same time, greatly improving the stiffness afteroptimized. The hydraulic press reached the stiffness requirement of the product.