In-place measurement method for thickness of large-sized wall plate

Abstract

The invention discloses an in-place measurement method for the thickness of a large-sized wall plate, relates to a method for measuring the thickness of a wall plate, and aims to solve the problems that the existing measurement method is low in measurement efficiency, a measured piece is needed to be taken down from a machine tool during measurement and comprehensive data of the whole wall plate cannot be acquired. The method comprises the following steps that a probe of an ultrasonic thickness measurer is mounted at a milling cutter position of a numerical control milling machine through a probe clamping mechanism; a first measurement point is measured, and measured data are stored into a memory of the ultrasonic thickness measurer; the probe of the ultrasonic thickness measurer is moved above the next measurement point and is controlled to move, so that the probe can be moved to an appointed position to be in contact with the wall plate for automatic scanning measurement point by point until the measurement of the final measurement point is finished; a data transmission processing module is used for respectively feeding back the measured data in the memory of the ultrasonic thickness measurer to terminal processing equipment for data processing to obtain thickness values of all the measurement points and corresponding position coordinates to finish in-place measurement of the thickness of the wall plate.

Description

technical field [0001] The invention relates to a method for measuring the thickness of a wall plate. Background technique [0002] In structures such as launch vehicles, the panel structure is adopted, and one side surface of the panel is a grid-like stiffened plate. Said wall panel is processed by a whole slab through a CNC milling machine, without the need for connection technology to make the reinforced parts such as the skin and the stringer frame into an integral stiffened panel. like figure 1 shown. Ultrasonic thickness gauge (manufactured by Olympus Corporation) is currently widely used instrument for testing the thickness of specified points in the grid of wall panels, such as figure 2 As shown, the resolution is 1um, and it is conservatively estimated that the measurement uncertainty can reach below 20um. Manual operation is required during measurement: Human operates the ultrasonic thickness gauge, manual reading, and the brain records the maximum and minimum...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an on-site measurement method for the thickness of a large wall panel to solve the problem of low measurement efficiency in the existing measurement method, the measured piece needs to be taken off the machine tool during measurement, and the comprehensive data of the entire wall panel cannot be obtained.

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