CN114311746A - Bullet support clamping flap of carbon fiber composite armor-piercing projectile, forming method thereof and forming die - Google Patents
Bullet support clamping flap of carbon fiber composite armor-piercing projectile, forming method thereof and forming die Download PDFInfo
- Publication number
- CN114311746A CN114311746A CN202111640648.1A CN202111640648A CN114311746A CN 114311746 A CN114311746 A CN 114311746A CN 202111640648 A CN202111640648 A CN 202111640648A CN 114311746 A CN114311746 A CN 114311746A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- shell
- insert
- tooth
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 82
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 82
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 37
- 239000004744 fabric Substances 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000002313 adhesive film Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 238000009940 knitting Methods 0.000 claims description 5
- 241000446313 Lamella Species 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000007723 die pressing method Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Moulding By Coating Moulds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of armor-piercing projectile supports, and particularly relates to a projectile support of a carbon fiber composite armor-piercing projectileA clip, a method of molding the same, and a mold for molding the same. The invention integrates the advantages of the short carbon fiber prepreg in the forming of complex shapes and the high strength of continuous fibers, the structure of the bullet holder clamping valve is divided into a tooth reinforcing plate and a shell, the tooth reinforcing plate is embedded in the annular groove of the shell, the tooth strength is enhanced, the tooth reinforcing plate is formed by mould pressing and processing the fabric carbon fiber prepreg, the shell is formed by mould pressing the short carbon fiber prepreg, compared with the continuous carbon fiber mould pressing process, the laying time in the manufacturing process is greatly shortened, and the manufacturing efficiency is improved; compared with a short carbon fiber prepreg mould pressing process, the strength of the teeth is improved through the tooth reinforcing plate, and the teeth are prevented from being broken when the armor piercing bullet is launched; compared with a metal bullet holder, the density of the product of the method can be reduced to 1.4g/cm3And the passive quality in the transmitting process is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of armor-piercing projectile supports, and particularly relates to a projectile support clamping flap of a carbon fiber composite armor-piercing projectile, a forming method of the projectile support clamping flap and a forming die of the projectile support clamping flap.
Background
The bullet holds in the palm is the important component part of armor-piercing bullet, and the bullet that most uses at present holds in the palm adopts along its axial equipartition for three or four bullet support card lamella saddle-shaped structure (see figure 1), and bullet support card lamella includes that the cross-section is fan annular shell, and the inner wall of shell evenly is equipped with fan annular tooth along the axial, and the outer wall of shell is equipped with preceding centering portion and back centering portion along the axial in proper order at an interval, and the outer peripheral face of back centering portion still is equipped with the elastic band groove. When the armor-piercing projectile is launched, the armor-piercing projectile body is fully held tightly by three or four clamping petals, the clamping petals and the armor-piercing projectile body are axially fixed through the circumferential teeth of the clamping petals, and impact force generated by ammunition explosion is transmitted to the armor-piercing projectile body through the projectile holder, so that the armor-piercing projectile body obtains the optimal initial speed. After the bullet is taken out of the chamber, the bullet holder clamping flap is separated from the bullet body under the resistance action generated by the head-on airflow and the after-effect action of gunpowder gas.
At present, the armor-piercing bullet holder is made of metal materials, light composite materials and the like, and the bullet holder made of the metal materials generates larger negative mass when being launched, influences the initial speed of the armor-piercing bullet and causes certain influence on the flight of the armor-piercing bullet; although the passive quality is greatly reduced by the elastic support made of the light composite material, the fiber volume content of the elastic support is low, the tooth area is easy to be rich in resin, the tooth strength is low, and the elastic support is easy to damage in the launching process; if the short carbon fiber prepreg is adopted in the later, the problems same as the injection molding process can occur, and if the continuous carbon fiber prepreg is adopted, the tooth area and the complex appearance of the bullet support are not easy to be paved and molded, so that the efficiency is low. The Chinese patent document (application number 202110259766.1) discloses a stable tail-fin unshelling armor-piercing bullet holder and a preparation method thereof, wherein tooth buds are formed by processing and combining a plurality of carbon fiber molded plates with different layering angles and layering thicknesses, and a shell is molded by molding chopped carbon fiber prepreg yarns; the preparation method comprises the steps of bullet support design, tooth bud preforming, clamping flap forming and the like, and has the following technical defects: 1. the tooth paving process has low efficiency and poor quality stability; 2. the single 120-degree clamping valve needs to be subjected to more than three curing processes in total, namely the curing of a plurality of tooth-shaped blocks, the bonding among the tooth-shaped blocks and the final co-bonding curing of the shell and the teeth, so that the energy consumption is high, the efficiency is low, and more equipment is needed; 3. the structural integrity is poor, and the adhesive joint interfaces are extremely large, so that the adhesive joint is easy to damage.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a cartridge support clamping flap of a carbon fiber composite armor-piercing projectile, a forming method thereof and a forming die thereof.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: a cartridge support clamping flap of a carbon fiber composite armor piercing projectile comprises a shell and sector-shaped tooth reinforcing plates, wherein the shell is formed by integrally compression molding short carbon fiber prepreg and comprises a sector-shaped shell, a plurality of sector-shaped teeth, a front centering portion and a rear centering portion, the sector-shaped teeth are uniformly arranged on the inner wall of the shell at intervals along the axial direction of the shell, and the front centering portion and the rear centering portion are sequentially arranged on the outer wall of the shell at intervals along the axial direction of the shell; the shell is provided with a ring groove at the same side of the teeth along the axial direction of the shell, the tooth reinforcing plate is fixedly embedded in the ring groove, and the tooth reinforcing plate and the teeth are completely and tightly attached to one side of the groove; the tooth reinforcing plate is obtained by cutting a carbon fiber composite material laminated plate, and the carbon fiber composite material laminated plate is formed by laying fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and quantity and then heating and pressurizing the fabric carbon fiber prepreg by a press.
The forming method of the bullet support clamping flap of the carbon fiber composite armor piercing bullet comprises the following steps:
1) laying fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and quantity, then transferring the fabric carbon fiber prepreg into a hot die pressing forming flat plate mould, and heating and pressurizing through a press to heat and solidify the plurality of fabric carbon fiber prepreg to obtain a carbon fiber composite material laminated plate;
2) the method comprises the following steps of (1) obtaining a plurality of tooth reinforcing plates by machining a carbon fiber composite material laminated plate, polishing the surfaces of the tooth reinforcing plates by using abrasive paper (which can be 150# abrasive paper), and cleaning by using volatile solvents (such as alcohol, acetone and the like);
3) and adhering an adhesive film on the tooth reinforcing plate, then sequentially embedding the adhesive film into tooth grooves of a bullet holder clip forming die, paving a short carbon fiber prepreg to form a preformed body for forming teeth, a shell, a front centering part and a rear centering part, closing the die, and finally heating and curing to obtain the bullet holder clip.
Further, the carbon fiber used by the fabric carbon fiber prepreg is T700 or more, and the type of the fabric is a warp knitting fabric formed by knitting fibers in directions of 0-degree and 90-degree; the resin system used by the fabric carbon fiber prepreg is an epoxy resin system which can resist the temperature of more than 180 ℃.
Furthermore, the carbon fiber used by the chopped carbon fiber prepreg is T300 or more, the fiber length of the carbon fiber is 10-30mm, and the resin system is an epoxy resin system which can resist the temperature of over 180 ℃.
Furthermore, the adhesive film is an epoxy resin adhesive film which can resist the temperature of more than 180 ℃.
The invention also provides a die for forming the cartridge tray clamping flap of the carbon fiber composite armor piercing projectile, which comprises a lower die, an insert assembly and an upper die, wherein the top of the lower die is provided with a lower die groove with a sector-shaped section, the bottom of the lower die groove is sequentially and uniformly provided with a plurality of tooth grooves at intervals along the front-back direction, the groove wall of the tooth groove at the same side along the front-back direction is a slope, a forming gap is reserved between a tooth reinforcing plate embedded in the tooth groove and the slope, and the insert assembly comprises a first insert, a second insert and a third insert; when the die is used, the first insert, the second insert and the third insert are sequentially detachably buckled in a lower die groove along the front-back direction, the upper die is detachably buckled at the top of the lower die, the shell is formed in a forming cavity defined by the first insert, the second insert, the third insert, the upper die, a tooth reinforcing plate and the lower die, teeth are formed in forming gaps, a front centering portion is formed in the gaps defined by the first insert, the upper die and the shell, and a rear centering portion is formed in the gaps defined by the shell, the second insert, the third insert and the upper die.
Compared with the prior art, the invention integrates the advantages of the short carbon fiber prepreg in the forming of complex shapes and the high strength of continuous fibers, the structure of the bullet holder clamping valve is divided into the tooth reinforcing plate and the shell, the tooth reinforcing plate is embedded in the annular groove of the shell, the tooth strength is enhanced, the tooth reinforcing plate is molded and processed by adopting the fabric carbon fiber prepreg, the shell is molded by the short carbon fiber prepreg, compared with the continuous carbon fiber molding process, the laying time in the manufacturing process is greatly shortened, and the manufacturing efficiency is improved; compared with a short carbon fiber prepreg mould pressing process, the strength of the teeth is improved through the tooth reinforcing plate, and the teeth are prevented from being broken when the armor piercing bullet is launched; compared with a metal bullet holder, the density of the product of the method can be reduced to 1.4g/cm3And the passive quality in the transmitting process is greatly reduced.
Drawings
Fig. 1 is an exploded view of the overall structure of the sabot according to the background of the present invention.
Fig. 2 is a schematic structural view of a sabot flap in an embodiment of the present invention.
FIG. 3 is a schematic diagram of a partial structure of a sabot card lobe according to an embodiment of the present invention;
FIG. 4 is a schematic view of a mold for molding a sabot card half in a clamped condition according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a lower die of the die for forming the sabot clip in the embodiment of the present invention;
FIG. 6 is an enlarged schematic view at A in FIG. 5;
fig. 7 is a schematic cross-sectional view of a mold for molding a sabot card half in a clamped state according to an embodiment of the present invention.
The reference numbers in the figures are: the novel tooth forming die comprises a shell 1-1, teeth 1-2, a rear centering portion 1-3, a front centering portion 1-4, a spring belt groove 1-5, a tooth reinforcing plate 2, an upper die 3, a lower die 4, a slope 4-1, a vacuumizing nozzle 5, a tooth groove 7, an ejection mechanism 8, a guide column 9, a sealing ring 10, a first insert 11, a second insert 12 and a third insert 13.
Detailed Description
The present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is described in more detail below with reference to the following examples:
the cartridge support clip valve of the carbon fiber composite armor piercing projectile comprises a shell and a sector-shaped tooth reinforcing plate 2, wherein the shell is formed by integrally compression molding short carbon fiber prepreg and comprises a sector-shaped shell 1-1 with a sector-shaped cross section, a plurality of sector-shaped teeth uniformly arranged on the inner wall of the shell 1-1 at intervals along the axial direction of the shell 1-1, a front centering part 1-4 and a rear centering part 1-3 which are sequentially arranged on the outer wall of the shell 1-1 at intervals along the axial direction of the shell 1-1, and a cartridge belt groove 1-5 is further arranged on the outer peripheral surface of the rear centering part 1-3; the shell 1-1 is provided with a ring groove at the same side of the teeth along the axial direction of the shell 1-1, the tooth reinforcing plate 2 is fixedly embedded in the ring groove, and the tooth reinforcing plate 2 is completely and tightly attached to one side of the teeth facing the groove; the tooth reinforcing plate 2 is obtained by cutting a carbon fiber composite material laminated plate, and the carbon fiber composite material laminated plate is formed by laying fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and quantity and then heating and pressurizing the laid fabric carbon fiber prepreg by a press.
The die for forming the cartridge holder clamping flap of the carbon fiber composite armor piercing bullet comprises a lower die 4, an insert assembly and an upper die 3, wherein the top of the lower die 4 is provided with a lower die groove with a sector annular cross section, the bottom of the lower die groove is sequentially and uniformly provided with a plurality of tooth grooves 7 at intervals along the front-back direction, the groove wall of the tooth groove 7 along the same side of the front-back direction is a slope, a forming gap is reserved between a tooth reinforcing plate 2 embedded in the tooth groove 7 and the slope, the insert assembly comprises a first insert 11, a second insert 12 and a third insert 13 which are sequentially detachably buckled at the top of the lower die 4 along the front-back direction, the upper die 3 is detachably buckled at the top of the insert assembly, the housing is formed in a forming cavity surrounded by the first insert 11, the second insert 12, the third insert 13, the upper die 3, the tooth reinforcing plate 2 and the lower die 4, wherein teeth are formed in the forming gap.
Specifically, the main part profile of lower mould corresponds with the tooth face of bullet support card lamella, comprises tooth profile, two inclined planes and two vertical faces, in addition the die joint of lower mould periphery. And a parting surface on the periphery of the top of the lower die is provided with a guide post, the height of the guide post is 15-25mm, the draft angle of the guide post in drawing is 3-5 degrees, and the bottom and the top of the guide post are provided with a round angle of R2-3 mm. An annular sealing groove is arranged along the parting surface of the periphery of the top of the lower die, a sealing ring is arranged in the annular sealing groove, the sealing ring is made of fluororubber, the cross section of the sealing ring is circular, the diameter of the sealing ring is slightly larger than the width of the sealing groove by 0.2-0.5mm, the sealing ring is used for ensuring the sealing performance of a forming area of the cartridge-tray clamping flap, the cross section of the sealing groove is rectangular, the depth of the sealing groove is 2-3mm, and the width of the sealing groove is 4-5 mm.
The ejection mechanism is positioned on two inclined planes of the lower die, the ejection position is positioned below the part of the cartridge tray clamping valve, and the ejection mechanism is controlled by an oil cylinder.
Furthermore, the first insert is embedded in a cavity formed by the shell, the lower die, the upper die and the front centering part, and the shape of the first insert is consistent with that of the cavity;
furthermore, the second insert is embedded in a cavity formed by the shell, the lower die, the upper die and one side of the rear centering part, which is close to the front centering part, and a die drawing angle is arranged on an inclined surface of the second insert, which is close to the upper die, and the angle is 3-5 degrees, so that the die closing force of the upper die can be transmitted to the rear centering part;
furthermore, the third insert is embedded in a cavity formed by the shell, the lower die, the upper die and one side of the rear centering part, which is far away from the front centering part, and a die drawing angle is arranged on an inclined surface of the third insert, which is close to the upper die, and the angle is 3-5 degrees, so that the die assembly can transfer the die assembly force of the upper die to the shell 3;
furthermore, the device also comprises a guide hole which is matched with the guide post in a guiding way;
furthermore, still include the evacuation mouth, the evacuation mouth is totally two, and the vacuum mouth is located the mould die joint, and the diagonal distribution, its opening is located the lower mould seal groove and surrounds the region in.
The method for forming the cartridge support clamping flap of the carbon fiber composite armor piercing bullet based on the die comprises the following steps:
(1) laying the fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and the number, transferring the fabric carbon fiber prepreg into a hot-mould pressing flat plate mould, heating and pressurizing through a press, and heating and curing the plurality of fabric carbon fiber prepregs to obtain a cured carbon fiber composite laminated plate; then, a plurality of tooth reinforcing plates 2 are obtained through machining, the surfaces of the tooth reinforcing plates 2 are polished by abrasive paper (which can be 150# abrasive paper), and then are cleaned by volatile solvents (such as alcohol, acetone and the like) for standby.
(2) Coating a semi-permanent release agent on the surfaces of the upper die 3 and the lower die 4, and embedding a sealing ring 10 in a sealing groove of the lower die 4;
(3) a glue film is pasted on the tooth reinforcing plate 2 and then embedded in the tooth socket;
(4) filling gaps between the tooth reinforcing plates 2 and the slope surfaces with short carbon fiber prepreg, and stacking a preformed body of the shell 1-1;
(5) sequentially placing a first insert 11, a second insert 12 and a third insert 13 on the stacked shell 1-1 according to the size of a workpiece;
(6) stacking a pre-forming body of a front centering part 1-4 at a first insert 11 by using short-cut carbon fiber prepreg, and stacking a pre-forming body of a rear centering part 1-3 between a second insert 12 and a third insert 13;
(7) closing the upper die 3 and the lower die 4 until the gap between the parting surfaces of the upper die 3 and the lower die 4 is 0.2-0.3mm, wherein the upper die 3 is provided with a bulge for forming a belt magazine 1-5;
(8) opening a vacuumizing nozzle 5 and communicating the vacuumizing nozzle with a vacuumizing system to enable the vacuum degree of a die cavity of an upper die and a lower die to reach more than-0.95 Bar, then heating the dies to the curing temperature of the chopped carbon fiber prepreg, finally closing the vacuumizing nozzle 5, closing the upper die and the lower die at the moving speed of less than 1mm/min, and applying a die closing pressure of not less than 10MPa to the upper die 3 after the dies are closed; after keeping for a certain time at the curing temperature, fully curing the resin in the chopped carbon fiber prepreg, and then cooling (generally cooling to a temperature 10-20 ℃ below the glass transition temperature of the resin of the chopped carbon fiber prepreg at a rate of 1-3 ℃);
(9) opening the mold, and taking out the cartridge holder clamping flap;
(10) and (4) removing residual resin on the surfaces of the upper die and the lower die, coating the release agent again, replacing the aged or damaged sealing ring 10, and entering the next cycle.
In the forming method, the carbon fiber used by the fabric carbon fiber prepreg is T700 or more, the type of the used fabric is a warp knitting fabric, the angle of the fabric is 0 degree/90 degrees, and the used resin system is an epoxy resin system which can resist the temperature of over 180 degrees; the carbon fibers used by the chopped carbon fiber prepreg are T300 and above, the fiber length of the carbon fibers is 10-30mm, and the used resin system is an epoxy resin system which can resist the temperature of over 180 ℃; the adhesive film is an epoxy resin adhesive film which can resist the temperature of more than 180 ℃.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Claims (6)
1. The utility model provides a carbon-fibre composite material armour piercing bullet holds in palm card lamella which characterized in that: the bullet holder clamping valve comprises a shell and a sector annular tooth reinforcing plate; the shell is integrally molded by short carbon fiber prepreg in a compression molding mode and comprises a shell with a sector-shaped section, a plurality of sector-shaped teeth which are uniformly arranged on the inner wall of the shell at intervals along the axial direction of the shell, and a front centering part and a rear centering part which are sequentially arranged on the outer wall of the shell at intervals along the axial direction of the shell; the shell is provided with a ring groove at the same side of the teeth along the axial direction of the shell, the tooth reinforcing plate is fixedly embedded in the ring groove, and the tooth reinforcing plate and the teeth are completely and tightly attached to one side of the groove; the tooth reinforcing plate is obtained by cutting a carbon fiber composite material laminated plate, and the carbon fiber composite material laminated plate is formed by laying fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and quantity and then heating and pressurizing the fabric carbon fiber prepreg by a press.
2. The method for forming the sabot of the carbon fiber composite armor-piercing projectile according to claim 1, wherein: the method comprises the following steps:
1) laying fabric carbon fiber prepreg on a flat plate mould according to the designed laying angle and quantity, then transferring the fabric carbon fiber prepreg into a hot die pressing forming flat plate mould, and heating and pressurizing through a press to heat and solidify the plurality of fabric carbon fiber prepreg to obtain a carbon fiber composite material laminated plate;
2) the method comprises the following steps of (1) obtaining a plurality of tooth reinforcing plates by machining a carbon fiber composite material laminated plate, and cleaning the surfaces of the tooth reinforcing plates by using a volatile solvent after polishing the surfaces by using abrasive paper;
3) and adhering an adhesive film on the tooth reinforcing plate, then sequentially embedding the adhesive film into tooth grooves of a bullet holder clip forming die, paving a short carbon fiber prepreg to form a preformed body for forming teeth, a shell, a front centering part and a rear centering part, closing the die, and finally heating and curing to obtain the bullet holder clip.
3. The method for forming the sabot of the carbon fiber composite armor-piercing projectile according to claim 2, wherein: the carbon fiber used by the fabric carbon fiber prepreg is T700 or above, the type of the fabric is a warp knitting fabric formed by knitting fibers in directions of 0-degree and 90-degree, and the resin system used by the fabric carbon fiber prepreg is an epoxy resin system which can resist the temperature of over 180 ℃.
4. The method for forming the sabot of the carbon fiber composite armor-piercing projectile according to claim 2, wherein: the carbon fiber used by the chopped carbon fiber prepreg is T300 or more, the fiber length is 10-30mm, and the used resin system is an epoxy resin system which can resist the temperature of over 180 ℃.
5. The method for forming the sabot of the carbon fiber composite armor-piercing projectile according to claim 2, wherein: the adhesive film is an epoxy resin adhesive film which can resist the temperature of more than 180 ℃.
6. A mold for molding the sabot clip of the carbon fiber composite armor-piercing projectile of claim 1, wherein: the die comprises a lower die, an insert assembly and an upper die, wherein a lower die groove with a sector-shaped section is formed in the top of the lower die, a plurality of tooth grooves are sequentially and uniformly formed in the bottom of the lower die groove along the front-back direction at intervals, the groove walls of the tooth grooves along the same side of the front-back direction are sloping surfaces, a forming gap is reserved between a tooth reinforcing plate embedded in the tooth grooves and the sloping surfaces, and the insert assembly comprises a first insert, a second insert and a third insert; when the die is used, the first insert, the second insert and the third insert are sequentially detachably buckled in a lower die groove along the front-back direction, the upper die is detachably buckled at the top of the lower die, the shell is formed in a forming cavity defined by the first insert, the second insert, the third insert, the upper die, a tooth reinforcing plate and the lower die, teeth are formed in forming gaps, a front centering portion is formed in the gaps defined by the first insert, the upper die and the shell, and a rear centering portion is formed in the gaps defined by the shell, the second insert, the third insert and the upper die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111640648.1A CN114311746B (en) | 2021-12-29 | 2021-12-29 | Spring support clamping piece of carbon fiber composite material armor piercing bullet, forming method and forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111640648.1A CN114311746B (en) | 2021-12-29 | 2021-12-29 | Spring support clamping piece of carbon fiber composite material armor piercing bullet, forming method and forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114311746A true CN114311746A (en) | 2022-04-12 |
| CN114311746B CN114311746B (en) | 2023-11-14 |
Family
ID=81017492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111640648.1A Active CN114311746B (en) | 2021-12-29 | 2021-12-29 | Spring support clamping piece of carbon fiber composite material armor piercing bullet, forming method and forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114311746B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235289A (en) * | 2022-06-30 | 2022-10-25 | 江苏恒神股份有限公司 | Composite material bullet holder and forming method |
| CN116576734A (en) * | 2023-07-13 | 2023-08-11 | 北京理工大学 | Bullet holds in palm, projectile body subassembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972264A (en) * | 1997-06-06 | 1999-10-26 | Composite Rotor, Inc. | Resin transfer molding of a centrifuge rotor |
| CN112902762A (en) * | 2021-03-10 | 2021-06-04 | 宁波曙翔新材料股份有限公司 | Tail wing stable unshelling armor-piercing bullet holder and preparation method thereof |
-
2021
- 2021-12-29 CN CN202111640648.1A patent/CN114311746B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972264A (en) * | 1997-06-06 | 1999-10-26 | Composite Rotor, Inc. | Resin transfer molding of a centrifuge rotor |
| CN112902762A (en) * | 2021-03-10 | 2021-06-04 | 宁波曙翔新材料股份有限公司 | Tail wing stable unshelling armor-piercing bullet holder and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235289A (en) * | 2022-06-30 | 2022-10-25 | 江苏恒神股份有限公司 | Composite material bullet holder and forming method |
| CN116576734A (en) * | 2023-07-13 | 2023-08-11 | 北京理工大学 | Bullet holds in palm, projectile body subassembly |
| CN116576734B (en) * | 2023-07-13 | 2023-09-01 | 北京理工大学 | Bullet holds in palm, projectile body subassembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114311746B (en) | 2023-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114311746A (en) | Bullet support clamping flap of carbon fiber composite armor-piercing projectile, forming method thereof and forming die | |
| CN112902762B (en) | Tail wing stable unshelling armor-piercing bullet holder and preparation method thereof | |
| CN106313584B (en) | A kind of molding machine and forming method of tubulose D braided composites product | |
| EP1862294B1 (en) | Methods and systems for forming ophthalmic lens mold assemblies | |
| KR100831311B1 (en) | Method for reinforcement manufacturing a composite sabot as using the resin-injection vartm after stitching | |
| CN109682255B (en) | 2.5D woven composite material frangible cover with preset weak area and preparation method thereof | |
| CN109094058B (en) | Light composite material bullet holder and its manufacturing method | |
| CN111256536A (en) | Penetration cutting wire laying reinforced plane integral breaking type frangible cover and preparation method thereof | |
| CN111070560B (en) | Injection or injection-compression molding tool and process for heat insulation layer of combustion chamber of solid rocket engine | |
| CN111873449B (en) | Manufacturing method and product of split type composite propeller | |
| CN111002646A (en) | Electromagnetic shielding interlayer composite material frangible cover and preparation method thereof | |
| CN109318507A (en) | A kind of big L/D ratio carbon fibre reinforced pipe production mold and forming method | |
| EP1412654A1 (en) | Mold and procedure for manufacturing of a braking band with ventilation ducts in composite material | |
| CN112318782B (en) | Combined material transmission case components of a whole that can function independently mould and combined material transmission case molding system | |
| CN217465503U (en) | Composite material bullet holds in palm | |
| CN111322909B (en) | Integrally-broken-type frangible cover with stepped cutting plane and preparation method thereof | |
| CN107106943B (en) | Method for manufacturing concave plate | |
| CN113500795B (en) | Safety helmet shell and production process thereof | |
| CN107162589B (en) | Full-ceramic wavelength division multiplexer and preparation method thereof | |
| JP3882726B2 (en) | A shell piece of a shell for a shell, a manufacturing method thereof, and a shell for a shell | |
| CN212889040U (en) | Blade forming die of split type composite material propeller | |
| CN115235289A (en) | Composite material bullet holder and forming method | |
| CN113340120A (en) | Ceramic protection plate's device that holds fever | |
| CN112393649A (en) | Modular assembly method for spherical prefabricated fragment of ammunition warhead | |
| CN110953929A (en) | Breakable lid of carbon-fibre composite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |