Research On Boring And Milling Technology Of ZG00-AR01 Wedge Gate Valve Body

As an important pressure-bearing component of gate valves for fluid control products,gate valve bodies occupy an indispensable position in modern industry.The processing technology of the valve body has a key impact on the working performance of the wedge gate valve,and also plays an extremely important role in the economy and usability of the wedge gate valve.ZG00-AR01 wedge gate valve body main bore is Φ254 through hole,axial depth of 330mm;At the same time,there is a valve seat hole with a wedge angle of 5° inside the valve body,and the valve body pattern of the gate valve has certain requirements for the tolerance of the left and right 5° valve seat holes,and it is difficult to use traditional mechanical design theory to process it efficiently.Therefore,horizontal boring and milling technology was chosen to machine the valve body.This topic mainly focuses on the boring and milling technology of ZG00-AR01 wedge gate valve body,including the following:(1)According to the characteristics of valve body boring and milling,study the processability,machine tool performance and special fixture of ZG00-AR01 wedge gate valve body,determine the processing process,and develop and design the valve body cutting process.(2)The cutting simulation experiment of Φ254 runner hole was carried out,and an orthogonal table was established to verify the influence of cutting data on the main cutting force under the condition of milling,boring and two blade shapes,round and square.(3)Set up a virtual processing environment,conduct a complete processing simulation experiment on the ZG00-AR01 wedge gate valve body,and automatically compare the simulation results.(4)Based on the particle swarm optimization algorithm,an optimization model is established for the cutting force and metal removal rate of the cutting Φ254 runner hole operation,and the cutting data of the cutting Φ254 runner hole process are optimized by multi-objective algorithm.It is concluded that the square insert spiral milling method when cutting Φ254runner holes can improve the machining accuracy,make the main cutting force smaller,and improve the machining efficiency.The gouging and residue results of the complete machining simulation meet the process requirements and verify the feasibility of the process design.The Pareto optimal solution set with the smallest main cutting force and the largest metal removal rate is obtained,and the optimal cutting data value is provided for the actual cutting process as a theoretical reference.