Body Hammer Fretting Full Hydraulic Forging Hammer Hydraulic System Design And Simulation

Hammers,especially hydraulic forging hammer, has many advantages, suchas fast striking, multiple trips, perfect forming, simple structure, easy installationand lowest cost，low energy consumption，vibration reducing and mechanicaland electrical integration etc. It is the most inexpensive, omnipotent and majorequipment to complete the forging process. The full-hydraulic forging hammerwith a small up-stroke of hammer body work with pure hydraulic driving andhydraulic joint movement. It not only has the characteristics of full-hydraulicforging hammer, for instance, short stroking, fine precision, enough efficiency,high reliability etc, but also overcomes shortcomings of the pneumatic hammer,counterblow hammer and high-speed hammer, such as large energyconsumption, strong vibration, inconvenient operation and big power weightratio.Fully hydraulic forging hammer needs to completed blowing, returning andother automatic working cycles, putting hydraulic system in dynamic processesin the the entire operating cycle, especially when the hammer is striking with thebody, parameters of the hydraulic system tend to undulate considerably. In orderto make the hammer and working parts operates normally, the most importantthing is to ensure the stability of the performance during the dynamic. It iscompulsory to properly select key performance parameters, arrange the securityprotection circuit reasonably in the hydraulic system designing.First, in this paper, it is used400KJ full hydraulic forging hammer withsmall up-stroke of hammer body for the study which is together manyadvantages in one. According to the basic parameters principles of the design ofhydraulic hammers in the manual forging about hydraulic hammer, theparameters of the basic structure and the performance parameters have beenc a l c u l a t e d a n d d e s i g n e d b y e s t a b l i s h i n g t h e p h y s i c a l m o d e l.Secondly, Engineering Analysis is carried out in line with its workingprinciple, Engineering analysis performed according to its working principle, matching hydraulic system has been devised. Schematic diagram was draughtout, and the working cylinder, Unicom cylinders, hydraulic pumps and othercritical components for the hydraulic system have been considered and selected.Once more, using the simulation software of AMESim, simulation modelof plug-in valve, the hammer blow system, the hydraulic system and other restwere established respectively. After setting the simulation parameter of theSub-models, feasibility of the simulation models verified by simulating in asimple hydraulic circuit.Finally, all simulation model were united together to make a cyclesimulation of hydraulic hammer, so as to discuss the dynamic characteristics ofthe hammer, evaluating the advantages and disadvantages, inspecting thetransient response,analyzing affecting factors of the dynamic characteristics ofthe hydraulic system. Improvements were proposed to reduce hydraulic shock,improve the response speed and control accuracy. Thus optimizing the structuredesign and hydraulic hammer system design.