Machining method for large-eccentric-distance porous flying block iron casting

Abstract

The invention discloses a large-eccentric-distance porous flyweight iron casting machining method, which belongs to the field of machining and comprises the steps of flyweight casting blank preparation, aging treatment and blank primary machining. After the blank is sawed off into a first blank, a flyweight turning large-eccentric-distance outer circle clamp is used for turning a flyweight large-eccentric-distance outer circle of 9.5 + / -0.05 mm in a turning mode instead of a boring mode, after the first blank is cut off into a second blank, a flyweight inclined hole turnover type drill jig is used for drilling three inclined holes, a finished product is manufactured, inspection, cleaning and blow-drying are conducted, oil sealing is conducted on the surface, and the finished product is put in storage. By improving the flyweight blank and designing the special fixture and the drilling jig, the flyweight is quickly machined, the problems that the pitch size of three inclined holes is out of tolerance and the machining efficiency is low after the flyweight is machined are solved, the one-time delivery inspection qualification rate of the machined flyweight reaches 98% or above, the machining efficiency is improved by 2-3 times, and the machining cost is reduced. And the labor intensity of workers is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a method for processing large eccentricity porous flying block iron castings, which is used for processing large eccentricity porous flying block iron castings. Background technique [0002] In the hydraulic system, there is usually a hydraulic component, which is also a general-purpose component. Most of them are large eccentricity porous flying block iron castings (hereinafter referred to as flying blocks). Usually, the production batch is large, and the shape of the flying block is as follows: figure 1 , figure 2 As shown, its inner arc outer arc Eccentricity 9.5±0.05mm and three places Slanted hole angle, hole spacing size requirements are strict; the existing process is as follows: [0003] (1), material preparation, the 3D drawing of the casting blank is as follows image 3 shown; [0004] (2), aging treatment; [0005] (3), milling both ends, keep ...

AI Technical Summary

Problems solved by technology

[0019] The technical problem to be solved in the present invention is to provide a method for processing large eccentricity porous flying block iron castings, realize the rapid processing of flying blocks, and solve the problems of out-of-tolerance dimensions of the three inclined holes and low processing efficiency after the flying blocks are processed , so that the pass rate of the first inspection after processing the flying block can reach more than 98%, the processing efficiency can be increased by 2 to 3 times, and the labor intensity of the workers can be effectively reduced.

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