Research on design and manufacturing process of plastic pump head

Update:01-11-2019
Summary:

As the core component of the hydraulic end of the plung […]

As the core component of the hydraulic end of the plunger pump, the emulsion pump head body is subjected to great 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 particularity of the pump head structure, researching its processing technology and improving processing efficiency are the key to reducing production costs and improving product competitiveness. The movement law of the plunger pump, the pulsating flow rate and the pressure fluctuation caused by the pulsating flow are analyzed, and the relevant factors causing the pressure fluctuation are obtained, which provides a theoretical basis for the design and improvement of the plunger pump, and also analyzes the pump head body. The stress state provides an important theoretical basis.
The stress distribution law and the distribution of fatigue life of the emulsion pump head under the maximum stress condition were analyzed, and the improvement measures of the pump head structure were proposed based on the analysis results. According to the working condition and structural characteristics of the pump head body, the process route of the pump head body from material, blank, large-diameter hole nesting, stepped hole, milling inch thread, rolling to hydraulic self-enhancement is given. The characteristics of the nesting drill, the structure type of the workpiece rotation and the external chip removal are selected, and the related processes of the casing drilling and drilling are analyzed in detail, such as the cutting power, the selection of the cutting amount, the cooling and chip removal, and the nesting drill different from the ordinary hole. Auxiliary device for processing equipment.
Tool parameters are important factors affecting tool processing efficiency and service life. Because the nesting drill works in a confined space, the machining efficiency is met, and the determination of chip breaking and chip removal is the key to the design of the nesting drill. In addition, the drilling is the key. The influence of the axial vibration of the tool on the cutting angle during the hole process is analyzed, and the theoretical basis for the influence factors of the hole axis deflection is given. In-line threading is performed by milling, and 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 inner cavity is prestressed by the internal hole hydraulic self-enhancement method.

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