UA21020U - Barrel of short-barrel rifle arms for shooting cartridges with non-fatal action - Google Patents

Abstract

The utility model relates to arms. A barrel of short-barrel rifle arms for shooting cartridges with non-fatal action has the barrel itself, this consists of two connected to each other with axial symmetry front and back cylinders with constant outer diameter of each of the cylinders, and boss fixed on the back cylinder. To exclude possibility of use of cartridges with fatal action the barrel additionally has insert of cylindrical type with constant in diameter inner channel placed in the channel of the barrel. In the boss at the side wall additional depression of cylindrical type is provided, for additional fixation pin.

Description

Description of the invention

Utility model relates to the field of armaments, in particular to small arms barrels, namely, to 2 barrels of short-barreled small arms designed to fire cartridges equipped with non-lethal rubber projectiles, for example, to the barrel of a 9 mm Makarov system pistol (PM) or to the barrel of the 9-mm FORT pistol.

A known small arms barrel, which directly contains a barrel consisting of two axisymmetrically connected front and rear cylinders with a constant outer diameter of each of the mentioned cylinders, and 70 inflow made on the rear cylinder (11.

The disadvantages of the known small arms barrel include the fact that there is no guarantee of using cartridges equipped with lethal metal projectiles instead of cartridges equipped with non-lethal rubber metal projectiles.

A known barrel of a weapon, which directly contains a barrel consisting of two axisymmetrically connected front and rear cylinders with a constant outer diameter of each of said cylinders, and an inflow made on the rear cylinder, while the front cylinder is made with a smaller diameter than the rear, in a channel is made in the front cylinder, and a chamber is made in the rear cylinder, and the bore of the barrel is made with an inner diameter smaller than the chamber, the said barrel is connected to the chamber axially symmetrically by a conical transition, the inlet is made with a bevel for the entry of cartridges into the chamber, the bevel is made of hollow, the hollow is made of an oval shape (21.

The disadvantages of the known barrel of the weapon include the fact that there is no guarantee of using combat cartridges equipped with lethal metal projectiles (shelled bullets) instead of cartridges equipped with non-lethal rubber metal projectiles.

The closest useful model, both in essence and in terms of the tasks to be solved, chosen as a prototype, is the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which contains directly /--) a barrel consisting of two axisymmetrically connected front and of the rear cylinders with a constant outer diameter of each of the mentioned cylinders, and the inlet fixed on the rear cylinder, while the front cylinder is made with a smaller diameter than the rear, a channel is made in the front cylinder, and a chamber is made in the rear cylinder, and the bore is made with a smaller inner diameter , than the chamber, mentioned about the bore of the barrel is connected to the chamber axially symmetrically by a cone-shaped transition, the inflow is made by a bevel of the su for the entry of cartridges into the chamber, the bevel is made with a depression, the depression is made of an oval shape, and in the inflow a hole is made for a fixing pin that fastens the barrel to the rack (ZI. o

Among the shortcomings of the well-known barrel of short-barreled small arms for firing cartridges of non-lethal action, "-- which was chosen as a prototype, is that there is no guarantee of the use of cartridges equipped with lethal metal projectiles (shelled or other types of metal bullets) instead of cartridges that SC equipped with non-lethal rubber metal projectiles.

The useful model is based on the task of installing an additional insert inside the barrel with an internal channel smaller than the caliber of the bullet of lethal cartridges, to ensure the impossibility of using cartridges equipped with metallic projectiles of lethal action - metal shell or 70 all-metal bullets. no) c The essence of a useful model in the barrel of short-barreled small arms for firing non-lethal cartridges

I" of action, which directly contains a barrel consisting of two axially symmetrically connected front and rear cylinders with a constant outer diameter of each of the mentioned cylinders, and an inlet fixed on the rear cylinder, while the front cylinder is made with a smaller diameter than the rear, in a channel is made in the front cylinder, and a chamber is made in the rear cylinder, and the barrel is made with an inner diameter smaller than the chamber, the said barrel is connected to the chamber axially symmetrically by a cone-shaped transition, the inlet is made with a bevel for the entry of cartridges into the chamber, the bevel is made with with a hollow, the hollow is oval-shaped, and the hole for the fixing pin, which fastens the barrel to the rack, is made in the inflow, is that it additionally contains a cylindrical insert with a constant diameter of 20 internal channels, placed in the bore of the barrel, in the inflow an additional cylindrical recess is made on its side wall for additional fixation pin. The essence of the useful model is that in the front part of the additional insert, an annular groove with a width and depth of at least 0.01 mm is made on the inner surface of the channel, the inner surface of the insert channel is made without grooves, the outer surface of the additional cylindrical insert is made with or with a constant diameter along the entire length of the insert, or such that it converges on a 29 cone to one side or the other relative to the annular groove, which is made on the inner surface of the channel of the insert mentioned with, the longitudinal axis of the additional recess of the cylindrical type for the additional fixing pin is located at an angle to the side surface of the inflow. The essence of the useful model also lies in the fact that in the case of making the outer surface of the additional insert such that it converges on the cone to the side of the annular groove, the specified part, which has the minimum narrowing diameter, of the truncated cone is made either with a flat end surface 60, or converging on a wedge with a sharp edge, in the case of making the outer surface of the additional insert such that it converges on a cone to the side of the annular groove, the opposite part of the insert from the groove is made either with a flat end surface, or with the formation of a funnel directed from the end of the insert to the side of the specified longitudinal axis inserts, and the specified part, which has the maximum narrowing diameter, of the truncated cone is made either with a flat end surface, or one that converges on a wedge with a sharp edge.

Comparative analysis of the utility model with the prototype shows that the barrel of the short-barreled small arms for firing non-lethal cartridges, which is claimed, differs in that it additionally contains a cylindrical insert with a constant diameter internal channel, placed in the bore of the barrel, in the inflow on its side wall an additional cylindrical recess is made for an additional fixing pin, while in the front part of the additional insert, an annular groove with a width and depth of at least 0.01 mm is made on the inner surface of the channel, the inner surface of the insert channel is made without grooves, the outer surface of the additional cylindrical insert is made with or with a constant diameter along the entire length of the insert, or such that it converges on a cone in one direction or another relative to the annular groove, which is made on the inner 7/0 surface of the channel of the mentioned insert, the longitudinal axis of the additional recess of the cylindrical type for the additional fixing pin is located at an angle to the side th surface of the inflow, and in the case of making the outer surface of the additional insert such that it converges on a cone to the side of the annular groove, the specified part, which has the minimum narrowing diameter, of the truncated cone is performed either with a flat end surface, or one that converges on a wedge with a sharp edge, in the case of making the outer surface of the additional insert such that 7/5 converges on a cone to the side of the annular groove, the opposite part of the insert from the groove is made either with a flat end surface, or with the formation of a funnel directed from the end of the insert to the side of the longitudinal axis of the specified insert, and the specified part, which has the maximum narrowing diameter, of the truncated cone is made either with a flat end surface or one that converges on a wedge with a sharp edge.

Thus, the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is claimed, meets the criterion of a utility model "novelty".

The essence of the useful model is explained with the help of illustrations, where Fig. 1 shows the construction and composition diagram of the barrel of a short-barreled small arms weapon for firing non-lethal cartridges, which is claimed, Fig. 2 shows a diagram of the muzzle part of the barrel of a short-barreled small arms weapon for firing non-lethal cartridges, which is declared, with an additional insert installed in the bore of the barrel, Fig. 3-9 shows the cross-sections of the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is declared, respectively, in the cross-sections А-А, Б-Б, В-В, Г-Г , Д-Д, Ж-Ж and 3-3, Z in Fig. 10 shows the structural and compositional diagram of the additional insert of the barrel of a short-barreled small arms weapon for firing non-lethal cartridges, which is claimed, Figs. 11-13 show options for the constructive implementation of the additional insert of the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is claimed, Fig. 14 shows a scheme of placement to of an insert in the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is claimed, fig. 15-17c shows the diagrams of placing an additional insert (of different design) in the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is claimed, in fig. .18-36 show the stages of the manufacturing process of the barrel of a short-barreled small arms weapon for firing cartridges of non-lethal action, which is claimed, Fig. 37 shows a diagram of the installation of the barrel of a short-barreled small arms weapon for firing cartridges of non-lethal action, which is claimed, in the rack of the weapon frame, Fig. 38 shows the design and layout diagram of a cartridge (equipped with a non-lethal rubber projectile), which is used in the barrel of the 9-mm pistol of the Makarov system (PM) modernized for the indicated cartridge, which is claimed, Fig. 39 shows the design and layout diagram 9 -mm pistol « bystem Makarov (PM), in how 40-45 shows the stages of firing from a barrel used in a modernized cartridge (equipped with a non-lethal rubber projectile) 9-mm pistol of the Makarov (PM) system. )" The trunk of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is declared, contains (as a variant of the design), directly the trunk 1, consisting of two axisymmetric

The connected front (position 2) and rear (position C) cylinders with a constant outer diameter ko (respectively, the diameter of 04 and 02) of each of the mentioned cylinders (respectively, positions 2 and 3), and the inlet 4 fixed on the rear cylinder ( position C) (see fig. 1, fig. 14 and fig. 39), while the front cylinder - (position 2) is made with a smaller diameter О. than the rear cylinder (position 3) with a diameter ОО" - where ШО" ( see Fig. 1 and Fig. 14). Structurally, channel 5 is made in the front cylinder (position 2), and a chamber (position 6) is made in the rear cylinder 5o (position З) (see Fig. 1). Structurally, the channel 5 of the barrel 1 is made with an inner diameter (Ok) smaller than the inner diameter (Od) of the chamber b (see fig. 1 and fig. 15-17). The aforementioned channel 5 of the barrel 1 is connected to the chamber b axisymmetrically through a cone-shaped transition 7 (see Fig. 1 and Fig. 15-17).

Influx 4 is structurally made with a bevel 8 for the entry of U cartridges into the chamber b, while the bevel 8 is structurally made with a depression 10, and the specified depression 10 is oval-shaped (see fig. 1, two fig. 14, fig. 26-28, Fig. 37 and Fig. 39). Structurally, a hole 11 for a locking pin 12, which fastens the barrel 71 to the rack 13 of the frame 14 of the weapon 15, is made in the inflow 4 (see Fig. 1, Fig. 5 and Fig. 14). The trunk of a short-barreled small-arms weapon for firing non-lethal cartridges, which is claimed, additionally contains an insert 16 of a cylindrical type with a constant diameter (Ов) internal channel 17, located in the channel 5 of the barrel 1 (see Fig. 1). Structurally, an additional recess 18 of the cylindrical type is made in the inflow 4 on its side wall for an additional fixing pin 19 (see Fig. 1, Fig. 3-4, Fig. 14, Fig. 28-29). Structurally, in the front part of the additional insert 16, on the inner surface 20 of the channel 17, an annular groove 21 with a width of 49 and a depth of at least 0.01 mm is made (see fig. 1-2, fig. 10-12, fig. 31-35). The inner surface 20 of the channel 17 of the additional insert 16 is made without grooves - smooth. The outer surface 22 of the additional cylindrical insert 16 is made either with a constant diameter (O3) along the entire length of the insert 16 (see Fig. 1-2, Fig. 10, Fig. 14-15 and Fig. 39), or is such that converges on a cone in one direction or another (see fig. 11-13 and fig. 16-17) relative to the annular groove 21, which is made on the inner surface 20 of the channel 17 of the mentioned insert 16. Technologically, the longitudinal axis 23 of the additional recess 18 of the cylindrical type for additional fixing pin 19 is located at an angle a to the side surface of the inflow 4 (see Fig. 3-4 and Fig. 28). Technologically (in the case of making the outer surface 22 of the additional insert 16 in such a way that it converges on a cone to the side of the annular groove 21) part of the additional

Inserts 16, which has a minimum narrowing diameter of a truncated cone (inserts 16) are made either with a flat end surface (see Fig. 11-12) or one that converges on a wedge with a sharp edge (see Fig. 13 and Fig. 16 -17). Technologically (in the case of making the outer surface 22 of the additional insert 16 such that it converges on a cone towards the annular groove 21) the opposite part of the insert 16 from the groove 21 is made either with a flat end surface (see Fig. 12) or with the formation of a funnel directed from the end of the insert 16 to the side 7/0 of the longitudinal axis 24 of the specified insert 16 (see Fig. 17), while the specified part of the additional insert 16, which has the maximum diameter of the narrowing of the truncated cone (inserts 16), is made either with a flat end surface or such , which converges on a wedge with a sharp edge (see Fig. 17).

As part of small arms (for example, in the 9-mm pistol of the Makarov (PM) system), the barrel of a short-barreled small-arms weapon for firing non-lethal cartridges, which is claimed, is operated as follows.

Barrel 1, which is claimed, is pre-manufactured (using the technology shown in Fig. 18-36 - as a variant of the technological process).

When manufacturing the barrel, the blank 24 for the barrel 1 is pre-made (see Fig. 18). Next, the barrel 1 is turned from the workpiece 24 in the form of two cylinders connected relative to the longitudinal axis (positions 2 and 3) of different outer diameters - (0; and Ю», where 0402), while directly barrel 1 (as a guide for the impressive 2o element 25 of non-lethal action) have a smaller diameter (014) than the housing of the chamber 6 (O2) (see fig. 19 and fig. 21-22 - as a design variant). After that, the channel 5 of the barrel 1 is drilled (for example, with a drill bit 26) or in any other way made in the cylinder (position 2) of a smaller diameter (04), the channel 5 of the barrel 1, for example, with a diameter of 5.6...6b,5mm, 8.0... .110 mm (see Fig. 23 - as a design option). At the end of the above-mentioned technological operation, they are drilled (for example, with a drill 26) or in any other way. A chamber b is made in the cylinder (position C) of a larger diameter (OO 2) (see Fig. 24 - as a variant of the design, for the "TEREN" cartridge -3" caliber 9 mm, which is equipped with an impressive element of 25 but non-lethal action - a rubber bullet with a diameter of 9.5 mm (4)). Next, the chamber b is connected to the channel 5 of the barrel 1 by a cone-shaped transition 7 (for the purpose of smooth entry of the striking element 25 into the channel 5 of the barrel 1) (see fig. 1, fig. 15-17 and fig. 25). After that, in the rear part of the chamber b, an inlet 4 of a rectangular cross-sectional shape (see Fig. 25) is made (at the same time, the rear part 27 of the inlet 4 is made protruding beyond the edge of the end part 28 of the chamber b - see Fig. 19 and Fig. 23-26). The production of inflow 4 is accompanied by the execution of technological operations, according to which a bevel 8 is sequentially made on inflow 4 (see Fig. 2b), and an oval-shaped depression 10 is made on bevel 8 (see Figs. 26-27), performed in inflow 4 hole 11 for the locking pin 12 of fixing the barrel 1 to the rack 13 of the frame 14 of the weapon 15 (see Fig. 27). Structurally and (7) technologically, the hole 11 for the locking pin 12 of fixing the barrel 1 to the rack 13 of the frame 14 of the weapon 15 is made at a right angle (902) to the wall of the inflow 4 (see Fig. 27).

The technological process of manufacturing the barrel of short-barreled small arms for firing with non-lethal cartridges is continued by the fact that after the hole 11 for the locking pin 12 for fixing the barrel 1 to the rack 13 of the frame 14 of the weapon 15 is made in the inflow 4, an additional recess 18 is made in the inflow 4 for the "additional locking pin 19, which fixes the barrel 1 of the weapon 15 to the rack 13 of the frame 14 of the weapon 15, while 73

An additional recess 18, which is made in the inflow 4 of the barrel 1 for an additional fixing pin 19, which fixes the barrel 1 of the weapon 15 to the rack 13 of the frame 14 of the weapon 15, is made at an angle (3 to the side surface (wall))" of the specified inflow 4 (see Fig. 28). Next, measures are taken to increase the inner diameter and n of the chamber b to the value O., which is equal to the outer diameter a of the cartridge case 29 of the ammunition (cartridge 9), equipped with a rubber projectile 25 of non-lethal action (for example, by re-drilling the chamber 6 to the diameter ЮО.- 1 Ohm, which is equal to the outer diameter 4, of the cartridge case 29 of the ammunition (cartridge 9), equipped with a rubber projectile 25 of non-lethal action Im), for example, a cartridge with a length of 20 mm - the "TEREN-3" cartridge, which is equipped with a rubber bullet of non-lethal action, with the diameter of the outer surfaces 9...9.5 mmMm av! Y) (see Fig. 38-39 and Fig. 40-45 - as a variant of the constructive implementation).

After performing the above-mentioned technological operations (or in parallel with them, or previously - as a variant of the technological process of manufacturing the barrel of short-barreled small arms for firing cartridges with a non-lethal effect), an additional cylindrical insert 16 is made, in which the outer diameter OO with is equal to the inner diameter ЯК of the channel 5 of the barrel 1, and the inner diameter Ov (caliber) is not less than 2 mm (for example, with a diameter of 4.5 mm, 5.O0 mm, 5.b mm, b.0 mm, etc.) (see Fig. 30). At the same time, after manufacturing the additional cylindrical insert 16 (or in parallel with the above-mentioned technological operation - as a variant of the technological process of manufacturing the additional cylindrical insert 16 - "liner"), an annular groove 21 is made in the front part of the cylindrical insert 16, which creates a stepped transition from the end part 30 of the cylindrical insert 16 to the inner surface 20 of the channel 17 of the insert 16 (see Fig. 31). The cycle of technological operations for the manufacture of the barrel of short-barreled small arms for firing with non-lethal cartridges is continued by performing measures to polish the inner surface 20 of the channel 17 of the insert 16 (see Fig. 32) and the chamber 6.

After taking measures to polish the inner surface 20 of the channel 17 of the insert 16 and the chamber b, insert the cylindrical insert 16 under pressure P with tension into the channel 5 of the barrel 1 (see Fig. 33) until it connects with the conical transition 7 of the channel 5 of the barrel 1 into the chamber 6 (see fig. 34). 65 Next (to fix the barrel in the rack of the pistol frame, for example, the FORT-12 or PM pistol (9-mm Makarov pistol modified for firing non-lethal ammunition - "VII") is performed on the outer surface of the chamber 6 ring ledge 31 of a cylindrical shape with a diameter Oz smaller than the outer diameter OO" of the rear part (position 3) of the chamber b, for example, by the size of 74 (see Fig. 35 - as a design variant).

At the final stage of manufacturing the barrel of short-barreled small arms for firing non-lethal cartridges, measures are taken to apply a chemical coating on the surface of the barrel 1 (see Fig. 36b), followed by polishing of all surfaces of the barrel.

The barrel of a short-barreled small-arms weapon manufactured using the above-mentioned technology for firing non-lethal cartridges is ready for combat use. 70 The manufactured barrel of a short-barreled small-arms weapon for firing non-lethal cartridges is installed on a model of a small-arms weapon, for example, on the frame (position 14) of a 9-mm FORT-12 self-loading pistol or on the frame of a 9-mm Makarov (PM) self-loading pistol (see . fig.37), or to other design developments, in which the base model is a 9-mm Makarov self-loading pistol (PM) |5), or to other design developments, in which the base model is to other designs of firearms.

As part of the weapon, the barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which is declared, is operated as follows.

A cartridge 9 (see Fig. 38), which is equipped with a rubber projectile 25 (see Fig. 39 and Fig. 40), is inserted into the chamber 6 (with an inner diameter Оу) of the barrel 1. At the same time, the outer walls of the sleeve 29 will be in contact with the inner surface of the chamber 6. At the same time, the cartridge 9, upon entering the chamber 6, moves along the 2o depression 10, which is made on the bevel 8 of the inflow 4. When the cartridge 9 is in the chamber 6 of the weapon 15 (see . fig. 39), the rear part 32 of the cartridge 9 protrudes beyond the cut of the mentioned cartridge by no less than Zmm (see fig. 40-41), and the rubber projectile 25 (caliber 9...9.5 mm) rests in the walls of the cone-shaped transition 7 into the channel 5 of the barrel 1 and into the rear end part of the insert 16, which is fixed in the channel 5 of the barrel 1 (see Fig. 40).

When struck (for example, by a Z3Z impactor with force E) on the igniter capsule 34 of the cartridge 9, the aforementioned igniter capsule 34 is activated and ignites the projectile charge 35 placed in the sleeve 29 (see Fig. 41). Under the action of the expanding powder gases, which were formed during the combustion of the metal charge 35 (powder charge), but the rubber projectile 25 will be pressed through the cone-shaped transition 7 into the internal channel 17 of the insert 16 (located in the channel 5 of the barrel 1) (see fig. .41). Next (also under the increasing pressure of the powder gases formed during the combustion of the metal charge 35) the rubber projectile 25 will move along the length of Channel 17 of the insert 16 (see Fig. 42-43) to the muzzle 36. At the same time, friction against the internal the surface 20 of the channel 17 of the insert 16 of the rubber metal projectile 25 will be compensated by the smooth surface 20 of the channel 17 of the insert 16. c

When the rubber metal projectile 25 exits the muzzle section 36 of the barrel 1, the mentioned rubber projectile 25 will expand (see fig. 44), assuming its spherical shape (see fig. 38-39 and fig. 44-45).

After the rubber metal projectile 25 exits the muzzle section Zb of the barrel 1 (see Fig. 45), it will continue to move toward the target with -- speed M by inertia. with

The cartridge case 29 is pulled out of the chamber 6 by hooking it to the flange 37 of the groove 38 (for example, the ejector of the weapon 15 - the ejector and the weapon are not shown in Fig. 40-45). The next cartridge 9, which is in the store 39 of the weapon 15 and is the upper one, is fed to the open part of the store 39 under the action of the spring 40 (see Fig. 39). The weapon is ready for use again (see Fig. 39). Triggering of weapon mechanisms when fired is given in 151. "

Increasing the effectiveness of using the barrel of short-barreled small arms for firing shv cartridges of non-lethal action, which is claimed, in comparison with the prototype, is achieved by changing the design of the barrel, namely, by reducing the caliber of the barrel by almost two times by installing an insert to prevent the use of ammunition (cartridges), which are equipped with lethal projectiles (caliber 5.45 mm or more), for example, metal bullets with an impact energy of more than 250 kg/cm 2 6). Increasing the efficiency of using the barrel of short-barreled small arms for firing cartridges of non-lethal action, which is claimed, in comparison with the prototype, is also achieved by means of constructive solutions, in which the thickness of the insert and the thickness of the barrel wall between the bore and the insert will not allow boring the barrel for the use of the mentioned ammunition (cartridges) equipped with lethal projectiles. av) INFORMATION SOURCES 1. F.K. Babak "All about pistols and revolvers", ed. POLYGON, St. Petersburg, 2003, p. 195 - analogue. and 2. F.K. Babak "All about pistols and revolvers", ed. POLYGON, St. Petersburg, 2003, p. 140 - analogue. about Z. F.K. Babak "All about pistols and revolvers", ed. POLYGON, St. Petersburg, 2003, p. 118-126 - prototype. 4. Magazine "Special Purpose Equipment". Founder and publisher of 000 "Alfa-Center" and "Alfa-Bureau", -

Kyiv, Mo. 1, January 2001, p. 34 -39, p. 38, position 42. 5. Instruction on shooting. 9-mm pistol Makarov (PM), - M,: Military publishing house, 1986. p. 6. Small arms. 4th edition, corrected and supplemented. - Minsk, 000 "Popurry", 1999, pp. 46-47 "9-mm pistol cartridge Ukh18PM". for

Claims (4)

The formula of the invention 1. The barrel of a short-barreled small-arms weapon for firing cartridges of non-lethal action, which directly contains a barrel consisting of two axisymmetrically connected front and rear cylinders with 65 constant outer diameter of each of the mentioned cylinders, and an inlet fixed on the rear cylinder, while the front the cylinder is made with a diameter smaller than the rear one, a channel is made in the front cylinder, and a chamber is made in the rear cylinder, and the barrel bore is made with an inner diameter smaller than the chamber, the said barrel bore is connected to the chamber axisymmetric by a conical transition, the inflow is made with a bevel for entry of cartridges into the chamber, the bevel is made with a groove, the groove is made of an oval shape, and a hole for a fixing pin that fastens the barrel to the rack is made in the inflow, which is distinguished by the fact that it additionally contains a cylindrical insert with a constant diameter internal channel, placed in borehole, in the flow on its side walls an additional cylindrical recess is made for an additional fixing pin, while an annular groove with a width and depth of at least 0.01 mm is made in the front part of the additional insert on the inner surface of the channel, the inner surface of the insert channel is made 70 without grooves, the outer surface of the additional cylindrical insert is made or with a constant diameter along the entire length of the insert, or one that converges on a cone in one direction or another relative to the annular groove, which is made on the inner surface of the channel of the mentioned insert, the longitudinal axis of the additional recess of the cylindrical type for the additional fixing pin is located at an angle to the side surface of the inflow . 2. The barrel according to claim 1, which differs in that in the case of making the outer surface of the additional insert /5 such that it converges on a cone to the side of the annular groove, the specified part, which has the minimum narrowing diameter, of the truncated cone is made either with a flat end surface , or one that converges on a wedge with a sharp edge. C. The barrel according to claim 1, which differs in that in the case of making the outer surface of the additional insert in such a way that it converges on a cone towards the annular groove, the part of the insert opposite to the groove is made either with a flat end surface or with the formation of a funnel directed from the end inserts in the direction of the longitudinal axis of the specified insert. 4. The barrel according to claim 3, which differs in that the specified part, which has the maximum diameter of the narrowing of the truncated cone, is made either with a flat end surface or one that converges on a wedge with a sharp edge. z no (av) se (av) «- с no) 1» ko - (av) ko «2 bo b5