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Gear pump assembly map mapping details (Figure)
Draw gear pump assembly drawing process and its steps have been described, this section mainly from the expression program, dimensioning and technical requirements for the following gear pump assembly map mapping. First, to determine the gear pump assembly diagram of the expression program, as follows: According to gear pump assembly view view selection principle, the main view using its working position, the expression of the program uses three views. The main view uses the appearance, focusing on the structure of the gear pump parts and the inlet and outlet positions. The mounting holes on the bottom of the pump can be expressed in partial cross-section. Top view of the assembly along the assembly line cut open the painting method, the internal assembly relationship and the mutual position between parts clearly expressed, but also expressed the gear meshing, sealing filler and gland and the connection between the pump body, Pulley and shaft connected by key. In addition, it is possible to express the distribution of holes in the pump mounting plate. The left view (or right view) is cut along the joint plane to show how the gear meshing and the addendum circle cooperate with the pump body cavity. At the same time, it can also express the position of the screw and the pin for connecting the pump body and the pump cover. On the pump into the oil port and the structure of the oil port, the partial cross-section can be used to express. In addition, the partial view can also be used to express the shape of the boss on the pump body. Proposed to use A2 map, 1: 1 scale drawing. Figure 3-4 gear pump assembly drawings, refer to. Figure gear pump assembly map Second, the gear pump assembly drawings should note the size: gear pump drawing should consider the injection of the following five dimensions: 1, the performance specifications size two axis center distance ± 0.08 import and export screw hole size G 2 , Assembly size Gear shaft and pump body, cover hole φ H8 / f7 Gear tip circle and body cavity φ H8 / f7 Gear shaft and pulley hole φ H7 / k6 3, Overall dimensions Length: Width: : Calculated or calculated from the figure 4, the installation size hole positioning size: x and y 4-φ 5 aperture, and other important dimensions such as gear shaft height, inlet height. Third, the gear pump assembly drawings on the technical requirements: 1, with a gasket to adjust the gap between the gear end face and the pump cover, so that it is 0.10 ± 0.15 range; 2, after assembly requires flexible rotation, no abnormal noise; 3, the connection There should be no oil leakage with the seal.