High Quality New Diesel Fuel Injection Pump Delivery Valve 131160-2220 05A for Diesel Engine Spare Parts

Different processing methods for the seat surface of the oil return valve of the equal pressure oil outlet valve.Nowadays, the competition in the automotive parts manufacturing industry is becoming increasingly fierce, the production cost continues to decline, and the processing accuracy requirements continue to increase, so the processing technology needs to be continuously improved to meet the market requirements. In this paper, the processing technology of the inner cone (also known as "seat surface ") of the isobaric oil return valve is studied, the existing old equipment and high-precision equipment are used, and the comparative test analysis method is used to explore the optimal processing technology, so as to improve the processing accuracy and production efficiency, and maximize the product benefit.The grinding process of the parts after heat treatment is: rough grinding outer circle → rough and fine grinding seat surface → fine grinding outer circle → grinding chamfer → outer circle classification.The so-called pinch grinding is to install an elastic clamp on the spindle of the head frame of the grinder to clamp the outer circle of the workpiece for grinding. The oil return valve is a cylinder, one end of the two ends has a small hole, the other end is a cone, can be used to clamp the outer circle for seat grinding.The grinding process is relatively simple, and the roundness of the parts depends on the rotation accuracy of the grinding machine head frame and the grinding wheel spindle as well as the grinding wheel vibration caused by the unbalance of the grinding wheel shaft.The runout of the part seat with respect to the outer circle depends on the coaxiality of the hole and the outer circle of the grinder elastic clamp. The manufacturing accuracy of the nozzle is limited, and its actual runout is 0.01 ~ 0.02 mm; The rotation runout of the grinding machine head frame is 0.002 ~ 0.003mm.Through the comparative analysis of test data and process, it is found that the precision of the seat surface obtained by the optimized grinding process is greatly improved, the sealing property of the couple parts is better, and the assembly qualification rate is higher. One person can operate 3~5 CNC grinding machines at the same time to achieve efficient production. Using this processing method, the roundness of the seat can reach 0.000 5 mm, appropriately reduce the accuracy requirements to 0.001 mm, adjust the processing program, and the processing time can be shortened, each unit can process 900 pieces per shift, which can achieve the purpose of reducing production costs, shortening the production cycle of parts and improving the quality of parts. The disadvantage of this method is that the manufacturing accuracy of the tooling is higher, and the tooling needs to be precisely aligned before processing, which takes a little more time.