10 results about "Small caliber" patented technology

The anti-unmanned aerial vehicle special bullet comprises a bullet shell and a bullet head inserted into the bullet shell, the bullet head comprises an air cap and a bullet support which are connected with each other, the bullet support is arranged in the bullet shell, a containing cavity is formed in the bullet support, and a plurality of bullet clusters are contained in the containing cavity. Each bullet cluster comprises a plurality of cylindrical bullets, a propelling assembly is further arranged on the bullet shell and used for driving the bullet head to leave the bullet shell, and the structure of the bullet support is arranged to be capable of cracking after leaving the bullet shell so that the cylindrical bullets can be scattered. According to the anti-unmanned aerial vehicle special bullet, the bullet cluster is loaded in the bullet support in the bullet shell, the bullet cluster enables the bullets to be scattered under the action of the propelling assembly and air resistance, so that main killing power is provided, the defect that shotgun guns or other anti-unmanned aerial vehicle equipment is often needed for main killing in anti-unmanned aerial vehicle combat is overcome, and the anti-unmanned aerial vehicle special bullet is suitable for being used in unmanned aerial vehicle combat. The problems of universality and portability of an individual soldier in anti-unmanned aerial vehicle combat in a contemporary combat environment are solved.

1. The name of the design product: protective cover. 2. The use of the design product: used for isolating ship gun from external environment, protecting small caliber ship gun, and playing a protective role. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a kind of biomimetic laminated ballistic ceramic material, including matrix layer and embedded layer composition, it is matrix layer, embedded layer, matrix layer in turn by outside inside alternately stacked composition, wherein matrix layer is by B4C powder, SiC powder, nano additive, binder and plasticizer are made, embedded layer is Al2O3 powder, MgO or titanium boride at least one, hexagonal boron nitride powder, binder and plasticizer are made.The biomimetic laminated ballistic ceramic of the application has the advantages of light weight, high hardness, high toughness, good effect of anti-intensive attack, etc.Cutting after the ceramic sample is handled, and the target sample piece with the face density of about 27.5kg / m 2 The target sample piece is prepared by compounding with ultra-high molecular weight polyethylene fiber plate, 95 type 5.8mm ordinary bullet is carried out, and multiple bullet shooting can be effectively defended, and the highest can be continuously defended 8 bullet shooting, and the application is suitable for the protection demand of various light armored equipment and individual protection equipment to small caliber bullet, and the survival rate in battlefield is improved.

The invention discloses an anti-guide detonating device capable of being used for a small-caliber empennage stable shelling armor-piercing bullet. The anti-guide detonating device comprises a shell, a bullet head part used for being connected with a warhead, an empennage and a bullet support, and a booster grain, delay powder, an igniter cap and a firing device are sequentially arranged in the shell; the firing device can axially slide relative to the shell and is used for firing the fire cap, and a spring is arranged between the firing device and the fire cap; the safety pin spring is inserted into the percussion device and is used for carrying out safety limiting on the percussion device; the delay powder is used for igniting the booster grain in a delayed manner; the booster grain is used for generating axial explosive shock waves; and a plurality of circles are arranged in the axial direction of the shell at equal intervals, and each circle is provided with a plurality of circles, is in contact with the booster grain, and is provided with a shaped charge cover for radial jet flow. According to the detonating device, the comprehensive efficiency of the detonating device for the small-caliber empennage stable shelling armor-piercing bullet can be improved.

In order to solve the problems of low reliability, large volume and weight, and long assembly time of the existing scheme for transmitting cannonball by adopting the chainless technology, the application provides a closed link for transmitting small-caliber cannonball, which comprises a bullet clamping groove; the bullet clamping grooves are n in number and are arranged in parallel and connected in sequence to form a closed chain structure; two adjacent bullet clamping grooves are connected by bullet tip supports, connecting plates, chain pins and bearings at one end and connected by bullet bottom supports, connecting plates, chain pins and bearings at the other end to form a bullet clamping groove of one bullet position; the connecting plate is a stepped staggered long strip plate formed by sequentially arranging a thin plate, two thick plates and three thin plates; the end of the first thin plate and the end of the third thin plate are respectively used for connecting the bullet tip support or the bullet bottom support in the adjacent bullet clamping groove; the second thick plate is used for connecting the end of the bullet clamping groove between the adjacent bullet clamping grooves; bearings are installed on the bullet tip support and the bullet bottom support for rolling the bullet clamping groove and completing the bullet transmission; the chain pin is used for axially limiting the bearings on the bullet tip support and the bullet bottom support and the connecting plate. The application has simple structure and high reliability.

The present invention relates to a method for providing a coating to the inner surface of a barrel of a small- or medium-caliber firearm, wherein the inner surface defines the internal volume, and the method provides a firearm including the barrel to be processed in a reaction chamber, and provides a cylindrical electrode having an outer surface and including a target material substantially coaxially within the barrel, closes the reaction chamber, reduces the pressure to a predetermined pressure value, supplies gas to the reaction chamber, thereby supplying gas into the internal volume, and raises the pressure within the reaction chamber to an operating pressure, using the electrode as a target cathode and the barrel as an anode. The process includes the steps of: applying a first electric field to the electrode to activate the gas into a plasma gas; using the plasma gas to remove the target material and deposit it on the inner surface; turning off the first electric field; stopping the gas supply; returning the reaction chamber to atmospheric pressure; and removing the firearm, including the processed barrel, from the reaction chamber, wherein the distance between the outer surface of the electrode and the inner surface of the barrel is at least 0.5 mm, the electric field is applied for a time long enough to form a layer of the target material on the inner surface of the barrel, and the product of the operating pressure and the distance between the electrode and the inner surface is 10 -5 This concerns the method of Torr.cm ~ 45 Torr.cm.

A training and testing blank firing adaptor cartridge chamber for certain large caliber firearms such as grenade machineguns is provided. The blank firing adaptor cartridge chamber utilizes smaller caliber, low-cost blanks as the powering source to achieve realistic operating mechanism functioning.

A small-caliber cluster gun projectile based on a center delay tube comprises a parent bullet head, a parent bullet shell, a shell bottom cover, a bullet projectile, a projectile carrier and a center delay tube; the parent bullet head and the shell bottom cover are respectively threadedly connected at both ends of the parent bullet shell; the center delay tube is located at the center of the parent bullet shell, one end of the center delay tube is fixedly inserted into the parent bullet head, the other end is threadedly connected with the shell bottom cover, and the center of the shell bottom cover is provided with an ignition hole; the projectile carrier is located in the annular space between the center delay tube and the parent bullet shell, and the bullet projectile is located in the projectile carrier; the primer, the primary ignition powder, the explosion-proof baffle, the delay powder, the secondary ignition powder, the initiating explosive and the shot blasting explosive of the center delay tube are sequentially arranged along the axial direction of the tube body; the projectile carrier adopts a multi-petal structure, a plurality of projectile accommodating grooves are arranged on a single petal body; a limiting protrusion is arranged on the circumferential surface of the projectile carrier, a limiting groove is arranged on the inner surface of the parent bullet shell, and the limiting protrusion and the limiting groove are in clamping engagement.

The invention provides a jar extrusion forming process for a small-caliber cannonball cartridge case and a die structure, and relates to the technical field of metal plastic processing, the process comprises the following steps: (1) blanking a bar; (2) the blanked blank is subjected to phosphating and saponifying treatment; (3) the treated blank is placed in a multi-station integrated forming die to be subjected to primary stretching; (4) complete bottom extrusion forming is completed in the same mold, and a finished jar product is obtained; the extrusion forming is carried out at normal temperature, and heating treatment is not needed; the blank is a low-carbon steel or brass material. When the blank is low-carbon steel, the extrusion speed is 5-10 mm / s, the extrusion ratio is 3-6, and the extrusion pressure is 800-1000 MPa; and when the blank is brass, the extrusion speed is 10-15 mm / s, the extrusion ratio is 8-10, and the extrusion pressure is 300-500 MPa. The method has the beneficial effects that the production efficiency is high, the cost is saved, the product precision is high, the quality is stable and reliable, the universality is high, the application prospect is wide, and the like.

The invention provides a small-caliber sectional type barrel and an ultrahigh initial velocity launching experiment device. The barrel comprises a front section barrel, a rear section barrel and a high-precision connecting structure for detachably and coaxially connecting the front section barrel and the rear section barrel. The high-precision connecting structure comprises a threaded connecting structure and a positioning structure, and the positioning structure is used for achieving radial accurate positioning of the front section body tube and the rear section body tube after the threaded connecting structure is screwed and guaranteeing the coaxiality of inner holes of the body tube after connection; the limiting structure comprises matched pin hole assemblies arranged on the front section body tube and the rear section body tube and used for preventing the front section body tube and the rear section body tube from rotating relatively, the subsection body tube and the locking mechanism form the ultrahigh initial velocity launching experiment device, the length-diameter ratio of the body tube is larger than 100 mm, acceleration of a launcher in the body tube is remarkably increased, the higher initial velocity is obtained, and the launching effect is improved. And the high-initial-speed experiment requirement is met. The splicing design of the front and rear body tubes reduces the processing difficulty, the reliability of the experiment process is ensured through a high-precision connecting structure, and the experiment precision and repeatability are improved.