Thickness measuring device for engine lining with convergent openings at two ends

Abstract

When the thickness of the engine lining is measured, a large opening of an engine faces rightwards and is placed on a supporting frame, a shell is positioned by a positioning stop block, the end of a thickness measuring rod is moved into the shell along the axis to measure an initial surface, if the thickness measuring rod touches the inner surface of the shell, a collision sensor sends a signal, and the thickness of the engine lining is measured. And the thickness measuring rod stops moving. After moving in place, a laser distance measuring sensor on the probe measures the distance between the probe and the inner surface of the shell, the probe extends out of the thickness measuring rod and stops moving at a specified distance from the lining layer of the shell, and the shear type lifting platform finely adjusts the distance between the spectral thickness gauge and the lining layer, so that the lining layer is within the measuring range of the thickness gauge; the white light spectrometer sensor measures the thickness of the lining layer by using a spectrum confocal principle, after measurement data is collected, the probe descends, the thickness measuring rod retreats to the next measurement, the measurement process is continuously repeated, and the thickness of the coating lining layer is tested on all points with required sections in sequence.

Description

technical field [0001] The invention relates to a device for measuring the thickness of an engine liner with closing ends, and belongs to the technical field of energetic material manufacturing. Background technique [0002] Solid rocket motors have the advantages of simplicity, reliability, ready-to-use, and maintenance-free, and play an irreplaceable role in the field of portable tactical missile weapons. The solid propellant of a solid rocket motor needs to be bonded to the shell through the lining. The uniformity of the lining will directly affect the bonding quality. Uneven coating will cause the solid propellant to separate from the composite shell, resulting in solid The engine fails to work. At present, conventional coating inspection methods cannot conduct non-contact non-destructive inspection of the thickness of the lining layer on the inner surface of the engine. Contents of the invention [0003] The technical problem to be solved by the present invention is...

AI Technical Summary

Problems solved by technology

The solid propellant of a solid rocket motor needs to be bonded to the shell through the lining. The uniformity of the lining will directly affect the bonding quality. Uneven coating will cause the solid propellant to separate from the composite shell, resulting in solid engine failure

At present, conventional coating inspection methods cannot conduct non-contact non-destructive inspection of the thickness of the inner surface lining of the engine.

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