As the core component of the hydraulic end of the plunger pump, the emulsion pump head body bears great pressure. Therefore, the finite element analysis of the pump head body is of great significance to improving the reliability and rationality of product design. Due to the particularity of the pump head body structure, studying its processing technology and improving processing efficiency are the keys to reducing production costs and improving product competitiveness. Analyze the movement law of the plunger pump, the pulsating flow rate and the pressure fluctuation caused by the pulsating flow rate, so as to obtain the relevant factors that cause the pressure fluctuation, and provide a theoretical basis for the design and improvement of the plunger pump, and also for the analysis of the pump head body The state of force provides an important theoretical basis.

Use to analyze the stress distribution law and fatigue life distribution state of the emulsion pump head body under the maximum stress condition, and propose improvement measures for the pump head structure 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 material, blank, large-diameter hole nesting, lathing stepped holes, milling inch threads, rolling to hydraulic self-reinforcement is given, and the analysis is focused on The characteristics of nesting drills, the selection of the structure of workpiece rotation and external chip removal, detailed analysis of nesting drill drilling related technology, such as cutting power, cutting amount selection, cooling and chip removal, and nesting drills are different from ordinary holes Auxiliary device for processing equipment.

Tool parameters are an important factor that affects the machining efficiency and service life of the tool. Since the nest drill works in a confined space, while meeting the machining efficiency, the determination of chip breaking and chip removal is the key to the design of the nest drill. The influence of the tool axial vibration on the cutting angle during the hole drilling process is analyzed, and the theoretical basis for the influence factors of the hole axis deflection is given. The milling method is used for inch thread processing, and the application of macro programs improves the efficiency of thread milling. In order to increase the strength and service life of the pump head body, the inner cavity is pre-stressed by the hydraulic self-reinforcement method of the inner hole.

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