Large pipe part flange face machining fixing device and method

Abstract

The invention discloses a large pipe part flange face machining fixing device and method. The machining fixing device comprises a bottom plate, a side plate, a positioning device and a clamping and fixing device, wherein the side plate and the bottom plate are fixed through rib plates; the positioning device comprises a fixed end centering and clamping mechanism, a movable end centering and clamping mechanism, a Z-direction positioning column and a pre-positioning mechanism which are arranged on the bottom plate, and an X-direction positioning frame arranged on the side plate; and the clampingand fixing device comprises a first pressing mechanism and a first auxiliary supporting mechanism which are arranged in the Z direction of the bottom plate, and a second pressing mechanism and a second auxiliary supporting mechanism which are arranged in the Y direction of the side plate. According to the machining fixing device provided by the invention, inner cavity positioning is adopted, themovable end centering and clamping mechanism can move front and back, parts are convenient to assemble and disassemble, the machining fixing device is suitable for center positioning and clamping of inner holes of parts large in length-diameter ratio and heavy in weight, the positioning precision is high, the reliability in clamping is realized, the operation difficulty is reduced, and the machining efficiency is greatly improved.

Description

technical field [0001] The invention relates to a clamping device, in particular to a processing and fixing device and method for flange surfaces of large pipe parts. Background technique [0002] In the process of mechanical processing and production, it is often encountered in the clamping and positioning of large-scale pipe flange parts with large aspect ratio and heavy weight. Large-scale pipe parts are mainly used in the intake system of large-scale engines of construction machinery. For the surface shape, use the general positioning method to set the positioning points on the shape, and the repeated positioning accuracy is low. The main function of pipe parts is the inner cavity of the part. When the part is positioned and processed by the shape of the part itself, because the part is a green sand casting, the part size is large and the casting deformation is large, and the deviation between the blank part and the part is not the same. When it is necessary to adjust t...

AI Technical Summary

Problems solved by technology

[0002] In the process of mechanical processing and production, it is often encountered in the clamping and positioning of large-scale pipe flange parts with large aspect ratio and heavy weight. Large-scale pipe parts are mainly used in the intake system of large-scale engines of construction machinery. For the surface shape, use the general positioning method to set the positioning points on the shape, and the repeat positioning accuracy is low

The main function of pipe parts is the inner cavity of the part. When the part is positioned and processed by the shape of the part itself, because the part is a green sand casting, the part size is large and the casting deformation is large, and the deviation between the blank part and the part is not the same. It is necessary to adjust the processing position of each part according to different deviations, the processing efficiency is low, and the scrap rate is high, especially when the part itself has a large length-to-diameter ratio and heavy weight, it is difficult to load and unload the parts, requiring multi-person cooperation, and the loading and unloading efficiency is even lower.

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