Blisk blade section online measurement path planning method

Abstract

The invention provides a blisk blade section online measurement path planning method. The blisk blade section online measurement path planning method comprises the steps of: automatically planning aninterference-free section measurement path according to a blade stacking axis, a set section height, a measuring head and measurement parameters. According to the blisk blade section online measurement path planning method, planning of the blade on-line measurement section measurement path is achieved, the non-interference measuring rod direction of each measurement point is automatically planned,the method is used for blade section gear detection in milling, and the path planning efficiency is high. The whole blisk blade section online measurement is adopted to avoid the problem of efficiency loss caused by disassembly off-line measurement in blade finish machining, improve the utilization rate of a machine tool, rapidly obtain the contour error and characteristic parameters of a detection section gear, provide direct basis for a technician to correct a blade machining tool path or adjust machining parameters in the next step, and improve the production efficiency.

Description

technical field [0001] The invention belongs to the on-line measurement technology of numerically controlled milling processing of an integral blisk of an aero-engine, and relates to an on-line measurement path planning method for the cross-section of an integral blisk blade. Background technique [0002] The blisk is the core part of an aero-engine, and its blades require high precision. During processing, it is often necessary to go through repeated operations of trial cutting, measurement, and trial cutting until the processing requirements are met. The current measurement methods mostly use off-line three-coordinate detection. During the process, the workpiece needs to be disassembled, sent for inspection, and re-clamped, which seriously affects the processing efficiency of the overall blisk. As the accuracy of machine tool online measurement is getting higher and higher, this problem can be improved through machine tool online measurement. [0003] For off-line three-c...

AI Technical Summary

Problems solved by technology

[0003] For off-line three-coordinate measurement, the blisk needs to be disassembled from the machine tool to the three-coordinate inspection stand for testing. If the test fails, the workpiece needs to be continuously installed on the machine tool Clamp processing, repeated trial cutting and testing greatly increase the occupation time of machine tools and three-coordinate equipment and the workload of operators, resulting in low manufacturing efficiency of blisks and high enterprise costs

On the other hand, the online measurement of manually collected points on the blade can only reflect the error of the measured point, but cannot fully reflect the characteristic parameters of the measured section file, and it is difficult to obtain the direction of the measuring rod without interference. Repeatedly collecting points and adjusting the direction, the path planning efficiency is low

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