As the core part of the hydraulic end of the plunger pump, the emulsion pump head body is subjected to extreme pressure. Therefore, the finite element analysis of the pump head body is of great significance for improving the reliability and rationality of product design. Due to the special structure of the pump head body, researching its processing technology and improving processing efficiency are the keys to reducing production costs and improving product competitiveness. The analysis of plunger pump movement law, pulsating flow and pressure fluctuation caused by pulsating flow are analyzed to obtain the relevant factors that cause the pressure fluctuation, which provides a theoretical basis for the design and improvement of the plunger pump, and also analyzes the pump head body. The state of stress provides an important theoretical basis.

Based on the analysis of the stress distribution law and the fatigue life distribution state of the emulsion pump head under the maximum load, the improvement measures of the pump head structure are proposed based on the analysis results. According to the working conditions and structural characteristics of the pump head body, the process route of the pump head body from materials, blanks, large-diameter hole sleeve processing, stepped holes, milling of inch threads, rolling to hydraulic self-reinforcing is given. The characteristics of the nest drill, the selection of the workpiece rotation and the external chip removal structure type, detailed analysis of the nest drill drilling related processes, such as cutting power, cutting amount selection, cooling and chip removal, and the nest drill is different from ordinary holes Auxiliary devices for processing equipment.

Tool parameters are important factors affecting tool processing efficiency and service life. Since the nest drill works in a confined space, the determination of chip breaking and chip removal is the key to the design of the nest drill while satisfying the processing efficiency. The influence of the axial vibration of the cutter on the cutting angle in the process of the hole was analyzed, and the theoretical basis of the factors affecting the deviation of the hole axis was given. The milling method is used for inch thread processing. The application of the macro program improves the efficiency of thread milling. In order to increase the strength and service life of the pump head body, the internal cavity hydraulic self-reinforcing method is used to prestress the internal cavity.

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