RU2803448C1 - Device for measuring bore wear - Google Patents

Abstract

FIELD: measurement equipment.

SUBSTANCE: device for measuring wear of the bore contains a measuring cylinder placed inside the barrel and an oil container. The measuring cylinder has three additional retractable pointed rods with pistons and seals located in the same plane at an angle of 120°. There is also a vertical collapsible measuring column. The column consists of tubes connected to each other by means of a threaded connection with a seal and has a cylindrical measuring tank.

EFFECT: simplification of measurement.

1 cl, 1 dwg

Description

The invention relates to measuring technology and can be used to measure the wear of smooth and rifled weapon barrels.

A device is known for inspecting defects on the inner surface and measuring the wear of the channels of rifled barrels [1], consisting of a movable probe with a head for inspecting the channel and a video camera, a power and control unit (PCU) with a controller, an electronic computer (computer), a monitor, a cassette - an adapter having a cylinder-shaped body with three helical lines - rifling and end surfaces, one of which has three protrusions for mating with the screw rifling of the barrel bore, and the other end surface of the cylinder forms a truncated cone for inserting a movable probe into the adapter cassette, movable probe made in the form of a long thin-walled cylinder on which there is a measuring head with a ring level, front and rear wheel suspensions connected to movable and fixed bushings located on the thin-walled cylinder.

The disadvantage of this invention is the complexity of the device due to the content of several mating mechanical devices and electronic components.

As a prototype, a device was selected for measuring wear of the barrel bore, containing a measuring cylinder with known geometric dimensions placed inside the barrel, an oil tank, a main valve, an oil reducer for regulating pressure and a pressure gauge for measuring it, a flange for supplying oil to the breech of the barrel, ejector plugs holes, an outlet flange with a lock, connected to the measuring cylinder of the installation rod with a scale, installed in the muzzle, a measuring vessel and a stopwatch for measuring its filling time [2]. Barrel bore wear is determined using a calibration chart.

The disadvantages of this invention is the complexity of the device.

The purpose of the claimed invention is to simplify the operation of the wear meter through the use of a measuring cylinder having three retractable pointed rods with pistons and seals located in the same plane and the possibility of fixing their position along the length of the barrel bore.

This goal is achieved by the fact that the wear meter, containing a measuring cylinder placed inside the barrel, a container with oil, according to the invention, has additional, three retractable pointed rods with pistons and seals, located in the same plane at an angle of 120°, a vertical collapsible measuring column, consisting from tubes connected to each other using a threaded connection with a seal and having a cylindrical measuring container.

A device is proposed for measuring the wear of the barrel bore (Fig. 1) based on hydrodynamic measurements, which contains a measuring column 2 placed inside the barrel 5, a measuring cylinder with three retractable pointed rods 8, a container with oil 4, a measuring container 7, guides 6, the caliber of the desired diameter 1.

The measuring column is dismountable and consists of separate parts assembled using threaded connections with seal 3, which allows you to change the length of the measuring column.

The wear measuring device operates as follows. To carry out wear measurements using the hydrodynamic method:

- assembly of the measuring column 2, corresponding in height to the required cross-section for measuring the wear of the barrel bore 5;

- bringing the measuring column into a vertical position (for example, using tripods);

- placing a measuring cylinder with three retractable pointed rods 8 in a gauge of the required diameter 1;

- pouring oil into measuring column 2 from container 4 (pointed rods 8 are extended, resting against the inner cylindrical surface of caliber 1 of diameter d _m );

- measurement of height h ₁ from the measured section to a convenient oil level for fixing in measuring container 7;

- determination of the oil volume V in the measuring column 2 by the amount of liquid remaining in the container 4;

- removing the gauge, pouring out the oil;

- bringing the trunk into a vertical position;

- insertion into the desired section of the barrel of a measuring cylinder with three retractable pointed rods 8;

- pouring oil in volume V into the measuring column 2 from container 4 (the pointed rods 8 are extended, resting against the inner cylindrical surface of the barrel 5 of diameter d ₂ );

- measurement of height h ₂ from the measured section to the steady oil level in measuring container 7;

- determination of barrel bore wear using a calibration chart.

Calculation of wear δ equal to , we carry out based on the following considerations. The change in oil consumption of measuring container 7 is equal to the change in oil volume in cylinders 9 from here

The essence of the invention is illustrated by graphic material, which is presented in:

- fig. 1 - diagram of a device for measuring barrel bore wear.

The technical result of the claimed invention makes it possible to simplify measurements.

Information sources

1. Patent No. 2251072 Russian Federation, IPC G01B 11/03, G02B 23/00. System for inspecting internal surface defects and measuring wear of channels of rifled barrels / I.P. Kuritsyn, V.P. Ershov, Yu.M. Gryaznov, T.I. Lukyanova, I.N. Molkov, O.N. Okhlopkova, V.A. Timofeev published in B.I., 2005. No. 12.

2. Patent No. 2368885 Russian Federation, IPC G01N 3/56, G01B 13/12, F41A 31/02. A method for measuring barrel bore wear and a device for its implementation (options) / Yu.V. Zverev, P.E. Kotlyar, V.I. Mishnev, S.I. Nazarenko published in B.I., 2009. No. 27.

Claims (1)

A device for measuring wear of the barrel bore, containing a measuring cylinder placed inside the barrel, a container with oil, characterized in that the measuring cylinder has additional three retractable pointed rods with pistons and seals located in the same plane at an angle of 120°, a vertical collapsible measuring column consisting made of tubes connected to each other using a threaded connection with a seal, and having a cylindrical measuring container.

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