Sample plate positioning detecting method for Airbus complicated titanium alloy forged pieces

Abstract

The invention relates to the technical field of complicated forged piece detection, and particularly to the field of auxiliary detection for complicated special forged pieces. Through a method of directly finding a dead center through a positioning sample plate, oblique-surface positioning, directly scratching the center of the upper part of the forged piece according to the central position of the sample plate by a scriber, positioning the inside of a rib at the lower part of the forged piece by the oblique surface, and directly scratching the center of the lower part of the forged piece according to the central position of the sample plate by the scriber, the effect of polishing and rib material shortage to detection of the forged piece maximally. Then leveling through two centers on the forged piece is performed for performing line scratching and positioning, thereby supplying an accurate reference for subsequent machining and detection. In final checking, a reference central hole after rough machining and a reference central line in line scratching are used for determining a method for checking the sample plate in a segmented manufacture manner. A large arc and two short ribs of the upper part in a same plane are arranged in one sample plate. Two high ribs are respectively checked by the other sample plate, thereby realizing a good use effect. The sample plate positioning detecting method has functions of improving detecting precision and efficiency for the forged piece, and ensuring high product quality.

Description

technical field [0001] The invention relates to the technical field of detection of complex forgings. Especially in the field of sample aided testing involving complex special forgings. Background technique [0002] Airbus titanium alloy forgings have the characteristics of single fan mold, thin web, more arc profiles, and high ribs on both sides, and the high ribs on both sides of the forging have inconsistent cross-sections. Easily deformed. And it is required to process two datum center holes and datum planes. Due to the large number of slopes, the easy deformation of the mold and the surface quality of the forging, the machining reference cannot be accurately positioned. More importantly, the tolerance of the reference center hole is very small, and the tolerance zone is only 0.027 mm. The machining requirements are relatively high, and the flatness is 0.2 mm. The hole center distance tolerance is 0.2 mm, and general measuring tools cannot be used for high-precision a...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to alleviate the pressure of manual positioning and marking of Airbus complex titanium alloy forgings, reduce the problem of positioning deviation, and at the same time overcome the difficulties of final inspection of forgings and improve the detection accuracy and efficiency of forgings

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