Automatic Control System Research Of Numerical Control Hydraulic Die Forging Hammer

Forging industry， as a basic industry of machinery manufacturing, has animportant effect on automobile manufacturing, aerospace, metallurgical and chemicalengineering and transportation. Forging hammer is equipment of importance in forgingindustry, which is set as the pioneer of forging machinery. In foreign, the researchrelated hydraulic die forging hammer has been mature; while in China it is still on theinitial stage. Compared with the traditional pneumatic hammer and hydraulic-gashammer, hydraulic die forging hammer has many advantages, such as a bigger blowenergy, higher efficiency and pollution-free. To solve the problem of energy blow withthe digital by hydraulic die forging hammer, Anyang forging machinery Co. LTD. hasdeveloped numerical control hydraulic die forging hammer, which makes the blowenergy of digital control come true. But the dynamic behavior of the system, that is therelationship between the input parameters and the output ones of the numerical controlsystem, hasn’t been thoroughly researched. By anglicizing the dynamic characteristicsof the control system and the operation system of NC hammer, this thesis providestheory basis for the designing and development of the NC hammer hydraulic system,the improvement for the working performance and the parameter optimization.First, on the basis of the analysis of the structure characteristics and the workingprinciple of the domestic and foreign similar forging die hammer products, theworking principle of the hydraulic control system of the forging die hammer iselaborated, and the stages of lifting the hammer and striking are analyzed specifically;To choose the C92K-63NC hammer as study object, the simulation models of thestages of lifting the hammer and striking are built by the Simulink software, and thecorresponding motion characteristic curves and the related pressure curves are gottenby the parameters input of the system; The second, omron PLC is used according tothe design requirement of the commissioned units, and the relevant operation systems are designed and analyzed again; Finally, the dynamic characteristic of the hydrauliccontrol system of the NC hammer is tested by experiment, and its operating system isexecuted by site commissioning, which both verify the rationality of the controlsystem.