Novel glimpsing chamber instrument and optics principle

Abstract

The invention relates to a novel glimpsing chamber instrument and an optics imaging principle. The novel glimpsing chamber instrument and the optics imaging principle are mainly used for that defects of iron mold, a blister, a steam vent, cracks and the like on the inner wall of a deep hole of Phi37-Phi155mm are directly observed and confirmed. The optics principle is that the situation of a pipeline or the inner wall of the deep hole can be observed on an objective lens position by taking advantage of the optics lens imaging of the lens. The place and the size of the defects can be clearly confirmed with a calibrated scale and a lighting lamp holder. Checking and repairing are convenient. The optics lens have the advantages that the focal distance of the lens is long, the range of observation is large and the angle of view can be at 70 degrees which is enabled the observing distance to be increased. Deep checking of the hole inner wall is solved. A special connecting way is adopted by a main pipe and an auxiliary pipe, thus concentricity of the instrument is maintained. Precision of the instrument is guaranteed. Measuring errors caused by errors of the instrument are avoided. Safety and reliability of the tested objects are guaranteed.

Description

technical field [0001] The invention belongs to the military industry, in particular to a novel bore sighting instrument and its optical principle. Background technique [0002] Before the assembly of the gun barrel and after the test firing, the quality of the inner wall of the barrel must be inspected. The items include: rust marks, sand holes, steam holes, cracks, copper hanging and other defects. Due to the narrow space on the surface of the gun bore, inspectors cannot directly inspect it visually. An instrument is urgently needed to solve the inspection problem of the gun barrel, thereby reducing the difficulty of gun barrel inspection and greatly increasing the safety factor of production and use. We have developed an optical instrument in response to this problem, an endoscope that looks at the inner walls of deep holes. Using the long focal length of optical lenses to increase the viewing angle of view and expand the depth of field, a three-element objective lens an...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of difficult deep hole inspection and provide an accurate, convenient and fast inspection equipment