A method and device for selecting an adapter fitted on a tenon-groove working surface

Abstract

The invention discloses a method for selecting an adapter fitted on a tenon-groove working surface, comprising: S1: preset theoretical graphics of all adapters; S2: enlarge and project the tenon and groove of a part, and store the tenon of the part Groove projection; S3: compare the part tongue and groove projection with the theoretical graphics of all adapters, select a theoretical adapter fit on the working surface of the tongue and groove as the target graphics; S4: scan the contours of all adapters, select and The closest adapter profile to the target pattern is used as the target profile. S5: Select the adapter closest to the target profile. Using this method, the adapter with the smallest matching error with the tenon and groove working surface can be selected, and the adapter is connected to the part tenon and groove before measurement, which can reduce the matching error between the adapter and the tenon and groove working surface. The invention also discloses a device for selecting an adapter fitted on the tenon-groove working surface. The device can automatically select the adapter with the smallest matching error with the tenon-groove working surface.

Description

technical field [0001] The invention relates to the technical field of mortise and groove measurement, and more specifically, relates to a method and device for selecting an adapter attached to a mortise and groove working surface. Background technique [0002] The turbine disc is a key hot-end part of an aero-engine. It has a harsh working environment and needs to operate at a very high speed under high temperature and high pressure. It is connected to the blade through a tenon-groove longitudinal tree structure, and the precision of the tenon-groove is very high. At present, the inspection of the fir tree-shaped tongue and groove of the turbine disk adopts a comprehensive measuring tool and an adapter to indirectly detect the center distance M of the tongue and groove, the offset distance X of the symmetrical center of the tongue and groove relative to the center of the disk, and the angle α for inspection. [0003] In the current measuring tool scheme, the adapter is desi...

AI Technical Summary

Problems solved by technology

[0004] However, with the continuous improvement of the accuracy of the tongue and groove of the parts, the method of measuring the theoretical gap value is relatively general; at the same time, because the profile of the adapter has not been inspected, just checking the cross-rod distance cannot guarantee that the profile is also qualified , the fit error A cannot be simply equal to the above theoretical gap value, so this measurement method can no longer meet the production needs

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