Cannon barrel axial line positioner

Abstract

The invention discloses a cannon barrel axial line positioner which includes an axial line locating frame and an axial line extending rod. The axial line locating frame which is inside the barrel can be adjusted by a radial elevating adjustment mechanism to form a surface contact with the inner wall of the barrel, and the axial line locating frame and the inner wall the barrel are closely cooperated. The axial line extending rod is fixed outside the barrel via a positioning seat on the axial line locating frame, and is provided with mark points on the outer wall at intervals. The cannon barrel axial line positioner can be used for a precision test of a cannon adjustment angle. The precision test is carried out by directly positioning and then extending the cannon barrel axial line, and directly using the mark points arranged on an axial line extending part as reference points. The cannon barrel axial line positioner has an exquisite structure which can reduce errors between a mark point connecting line and an actual barrel axial line, thus improving the precision test of the cannon adjustment, and further guaranteeing the shooting precision.

Description

technical field [0001] The invention relates to a military weapon, in particular to a cannon barrel axis positioning device. Background technique [0002] Theoretically speaking, the gun adjustment angle of the artillery is the angle at which the barrel axis turns. The accuracy of the gun adjustment angle directly affects the shooting accuracy. The test of gun adjustment accuracy is an important content of gun state detection. For the measurement of gun adjustment accuracy, the current measurement method is: make two mark points (cross lines) on the outer surface of the barrel as a reference, and then use related instruments to test the actual angle before and after the barrel rotation. The above measurement methods belong to indirect measurement, and its measurement principle is based on the fact that the line connecting the marking points is parallel to the axis of the barrel, but the actual situation is that the outer surface of the barrel is usually not a cylindrical su...

AI Technical Summary

Problems solved by technology

The above measurement methods belong to indirect measurement, and its measurement principle is based on the fact that the line connecting the marking points is parallel to the axis of the barrel, but the actual situation is that the outer surface of the barrel is usually not a cylindrical surface, and the two marks on the barrel The straight line determined by the point is neither coincident nor parallel to the axis of the barrel, so there is a large error between the test result and the actual angle of rotation of the axis of the barrel

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