A measuring instrument for equal rifling of gun barrel

Abstract

The invention belongs to the technical field of measuring the geometric accuracy of the smooth rifling of gun barrels, and discloses a measuring instrument for the smooth rifling of gun barrels. Frame, driven wheel frame, probe, torsion spring, extension spring, swing frame, inclination sensor, laser ranging head, rotary encoder, cable, etc. An inclination sensor and a laser distance measuring head are installed at the front end of the protective shell, and power supply and communication cables are drawn out at the rear end of the protective shell. A front probe, a driven traveling wheel frame, a driving traveling wheel frame, a rear probe and a rotary encoder frame are installed on the mandrel. The travel wheel is driven by the geared motor to walk in the rifling groove, the front probe and the rear probe contact and slide along the side wall of the rifling groove, and the measurement of the barrel rifling degree is realized by the combination of a rotary encoder, an inclination sensor and a laser distance measuring head .

Description

technical field [0001] The invention belongs to the technical field of geometric accuracy detection of gun barrels and other smooth rifling lines, in particular to a measuring instrument for the winding degree of gun barrel and other smooth rifling lines. Background technique [0002] In modern weapons, the rifling of the gun barrel is one of the key structures in the barrel of the artillery. The function of the equal rifling is to make the projectile rotate along the rifling when the artillery fires the shell, giving it a certain linear initial velocity and rotational angular velocity, so that the shell The trajectory is stable. Whether its curl meets the standard will have a huge impact on the quality of key combat performance indicators such as the shooting accuracy, ballistic stability, and shell initial velocity of the artillery. During the processing of artillery barrels, the quality will be greatly affected by various factors such as cutter bar deformation, system ch...

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic and foreign researches in the field of barrel rifling twist detection have produced many excellent results, but compared with other measurement items, the rifling twist detection technology is relatively backward, and most of the twist detectors used in actual production are Use the method based on template matching to compare the CCD image with the standard template to evaluate whether the curl is qualified, but this method cannot accurately measure the twist of the barrel rifling

There is also the use of gratings, but the device must be precisely adjusted and fixed, otherwise it will greatly affect the accuracy of straightness measurement, affected by site restrictions and operator proficiency, and cannot achieve on-machine measurement. After the processing process is completed, the parts are removed for measurement, which affects the accuracy of subsequent processing

[0004] Moreover, the price of this type of high-precision rifling twist detection instrument is very expensive, and it is difficult to be widely used.

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