阅读说明：本技术 一种用于制造电铸药型罩的多级辅助阴极装置 (Multi-stage auxiliary cathode device for manufacturing electroforming liner ) 是由 钮晨光 王晓庆 冯俊强 冯蕊丹 兰媛 牛蔺楷 于 2020-11-25 设计创作，主要内容包括：本发明属于药型罩制造技术领域,具体是一种用于制造电铸药型罩的多级辅助阴极装置。解决了现有电铸方法生产药型罩效率低下的问题,包括多级吊装法兰盘、短吊装杆、多组长吊装杆以及多个空心连杆,相邻上下两级吊装法兰盘之间通过两个对称位置的长吊装杆连接,长吊装杆两端通过螺栓紧固,相邻两级吊装法兰盘之间安装有一个空心连杆,空心连杆内连接有多级芯模间的阴极电线,空心连杆下端设置导线导出螺栓；第一级吊装法兰中部设置一级药型罩芯模,其余各次级吊装法兰中部设置次级药型罩芯模,最上级吊装法兰盘通过导电螺栓将阴极电流通过一级药型罩芯模引出,其余各级吊装法兰通过导线导入螺栓将阴极接到各次级药型罩芯模上。(The invention belongs to the technical field of liner manufacturing, and particularly relates to a multistage auxiliary cathode device for manufacturing an electroforming liner. The electroforming method solves the problem that the existing electroforming method is low in production efficiency of the shaped charge liner, and comprises a plurality of stages of hoisting flanges, short hoisting rods, a plurality of groups of long hoisting rods and a plurality of hollow connecting rods, wherein the adjacent upper and lower stages of hoisting flanges are connected through the two long hoisting rods at symmetrical positions, two ends of each long hoisting rod are fastened through bolts, one hollow connecting rod is arranged between the adjacent two stages of hoisting flanges, cathode wires between the stages of core molds are connected in the hollow connecting rods, and the lower ends of the hollow connecting rods are provided with lead-out bolts; the middle part of the first-stage hoisting flange is provided with a first-stage liner core mold, the middle parts of the other secondary hoisting flanges are provided with secondary liner core molds, the uppermost hoisting flange plate leads out cathode current through the first-stage liner core mold through a conductive bolt, and the other hoisting flanges connect the cathode to the secondary liner core molds through lead-in bolts.)

1. A multi-stage auxiliary cathode device for manufacturing an electroformed liner, comprising: the device comprises multi-stage hoisting flanges, short hoisting rods (3), a plurality of groups of long hoisting rods (7) and a plurality of hollow connecting rods (15), wherein the adjacent upper and lower stages of hoisting flanges are connected through the two long hoisting rods (7) at symmetrical positions, two ends of each long hoisting rod (7) are fastened through bolts, one hollow connecting rod (15) is installed between the adjacent two stages of hoisting flanges, cathode wires among multi-stage core molds penetrate through the hollow connecting rods (15), and the lower ends of the hollow connecting rods (15) are provided with lead guiding bolts (16); the middle part of the first-stage hoisting flange is provided with a first-stage shaped charge cover core mold (24), the middle parts of other secondary hoisting flanges are provided with secondary shaped charge cover core molds (25), the uppermost hoisting flange plate leads cathode current out through the first-stage shaped charge cover core mold (24) through a conductive bolt (12), other hoisting flanges at different levels connect cathodes to the secondary shaped charge cover core molds (25) through lead-in bolts (17), an annular shielding cover (9) is installed below each hoisting flange plate, each hoisting flange plate is provided with a short hoisting rod (3), and the lower end of the short hoisting rod (3) is connected with the conical shielding cover (4) through a shielding cover fixing frame (5).

2. The apparatus of claim 1, wherein the multi-stage auxiliary cathode apparatus for manufacturing electroformed liner comprises: the guide holes for mounting the long hoisting rod or the short hoisting rod and the guide holes for mounting the hollow connecting rod on the multistage hoisting flange are uniformly distributed on a circle with the same radius, and the included angle between the circle center of each two adjacent holes and the connecting line of the circle centers of the flanges is 60 degrees.

3. A multistage auxiliary cathode apparatus for manufacturing electroformed liner according to claim 1 or 2, characterized in that: the lower end of the first-level shaped charge cover core mould (24) is a tip part, the upper part of the tip part is provided with a core mould large round table (28), the upper part of the core mould large round table (28) is provided with a core mould secondary round table (27), and the upper part of the core mould secondary round table (27) is provided with a core mould thin shaft end (26); the lower end of the secondary shaped charge cover core die (25) is a tip part, the upper part of the tip part is provided with a core die large round table (28), the upper part of the core die large round table (28) is provided with a core die secondary round table (27), and the top of the core die secondary round table (27) is provided with a core die hoisting bolt hole (29); the inner diameter of the annular shielding cover (9) is 25mm larger than the outer diameter of the core mould large round table (28), and the height of the annular shielding cover is 10mm larger than the height of the core mould large round table (28).

4. The apparatus of claim 3, wherein the multi-stage auxiliary cathode apparatus for manufacturing electroformed liner comprises: the taper of the taper shielding cover (4) is the same as the taper of the outer contour tip part of the core mold of the shaped charge cover, the inner diameter of the maximum end circle of the taper shielding cover (4) is the same as the outer diameter of the large circular table of the core mold of the shaped charge cover, the inner depth of the taper shielding cover (4) is the same as the height of the taper part of the core mold of the shaped charge cover, and the distance between the small circular surface of the taper shielding cover (4) and the tip of the core mold of the shaped charge cover is 25-35 mm.

5. The apparatus of claim 4, wherein the multi-stage auxiliary cathode apparatus for manufacturing electroformed liner comprises: and screw holes matched with the hoisting bolts are processed in the center of the top circular surface of the liner core moulds hung on the hoisting flanges at all levels except the highest level, and the screw holes are used for being matched with the hoisting bolts (6).

6. The apparatus of claim 1, wherein the multi-stage auxiliary cathode apparatus for manufacturing electroformed liner comprises: and two short hoisting rods (3) are arranged on the hoisting flange plate at the lowest stage and are used for installing a shielding cover fixing frame (5).

Technical Field

The invention belongs to the technical field of liner manufacturing, and particularly relates to a multistage auxiliary cathode device for manufacturing an electroforming liner.

Background

As a key part of the warhead of the antitank armor-piercing projectile, the liner is a main element for forming jet flow of the penetration armor, and the quality of the liner directly influences the armor-piercing performance of the armor-piercing projectile. The liner is generally a conical revolving body made of metal material with a certain wall thickness, the physical and chemical properties and the tissue structure of the liner can influence the ability of the liner to form jet flow at high temperature and high pressure, and the microscopic properties such as the tissue structure and the like are restricted by the processing technology of the liner. Domestic and foreign researches show that the liner manufactured by different processing methods has different organizational structures and mechanical properties, and the penetration performance is greatly different.

At present, the processing and manufacturing methods of the liner mainly comprise spinning, hot forging, soft forging, electroforming and the like. The electroforming method is to make metal raw material adhere to the cathode prototype for deposition forming by using an electrodeposition method, and compared with other forging forming processes, the liner prepared by the electroforming method has the advantages of controllable structure, uniform and fine crystal grains, high geometric precision, high material utilization rate, low cost and the like, and can have ideal penetration effect, so that the liner is widely adopted. However, in order to ensure uniform and fine grains in the electroformed liner, conditions such as the magnitude of the electric current and the temperature of the electroformed liquid during the production process need to be strictly controlled, which requires that the electrodeposition rate during the electroforming production process be strictly controlled. Therefore, compared with other manufacturing methods, the electroforming method takes a long time to manufacture a single liner, and the production time is usually measured by days, so that the production efficiency of related enterprises is severely limited.

Therefore, the development of the electroforming liner production process device which can not only ensure the quality of electroforming liner products, but also obviously improve the production efficiency has important significance for the actual production of related manufacturing enterprises.

Disclosure of Invention

The invention provides a multistage auxiliary cathode device for manufacturing an electroforming liner, aiming at solving the problem that the existing electroforming method is low in efficiency in producing the liner.

The invention adopts the following technical scheme: a multi-stage auxiliary cathode device for manufacturing an electroformed liner comprises multi-stage hoisting flanges, short hoisting rods, a plurality of groups of long hoisting rods and a plurality of hollow connecting rods, wherein the adjacent upper and lower two-stage hoisting flanges are connected through the two long hoisting rods at symmetrical positions; the middle part of the first-stage hoisting flange is provided with a first-stage shaped charge liner core mold, the middle parts of the other secondary hoisting flanges are provided with secondary shaped charge liner core molds, the uppermost hoisting flange plate leads out cathode current through the first-stage shaped charge liner core mold through a conductive bolt, the other hoisting flanges at all stages connect cathodes to the secondary shaped charge liner core molds through lead-in bolts, an annular shielding cover is arranged below each stage of hoisting flange plate, each stage of hoisting flange plate is provided with a short hoisting rod, and the lower end of the short hoisting rod is connected with the conical shielding cover through a shielding cover fixing frame.

Furthermore, the guide holes for installing the long hoisting rod or the short hoisting rod and the guide holes for installing the hollow connecting rod on the multistage hoisting flange are uniformly distributed on the same radius circle, and the included angles between the circle centers of two adjacent holes and the connecting line of the circle centers of the flange are both 60 degrees.

Further, the lower end of the primary shaped charge liner core mould is a tip part, the upper part of the tip part is provided with a core mould large round table, the upper part of the core mould large round table is provided with a core mould secondary round table, and the upper part of the core mould secondary round table is provided with a core mould thin shaft end; the lower end of the secondary shaped charge cover core mold is a tip part, the upper part of the tip part is provided with a core mold large round table, the upper part of the core mold large round table is provided with a core mold secondary round table, and the top of the core mold secondary round table is provided with a core mold hoisting bolt hole; the inner diameter of the annular shielding cover is 25mm larger than the outer diameter of the core mould large circular table, and the height of the annular shielding cover is 10mm larger than the height of the core mould large circular table.

Furthermore, the taper of the conical shielding cover is the same as the taper of the outer contour of the core mold of the shaped charge liner, the inner diameter of the maximum end circle of the conical shielding cover is the same as the outer diameter of the large circular table of the core mold of the shaped charge liner, the inner depth of the conical shielding cover is the same as the height of the conical part of the core mold of the shaped charge liner, and the distance between the small circular surface of the conical shielding cover and the tip of the core mold of the shaped charge liner is 25-35 mm.

Furthermore, screw holes matched with hoisting bolts are machined in the center of the top circular surface of the liner core die hung on each level of hoisting flange except the highest level, and the screw holes are used for being matched with the hoisting bolts.

Furthermore, two short hoisting rods are arranged on the hoisting flange plate at the lowest level and used for installing a shielding cover fixing frame.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts a cathode auxiliary device structure in a multi-stage hoisting form, and can serially hoist a plurality of shaped charge liner core moulds under a cathode rotating motor, thereby simultaneously producing a plurality of shaped charge liner products at one electroforming station and realizing the multiplied improvement of electroforming production efficiency under the condition of not changing the structure and arrangement of the existing production equipment.

2. The invention adopts polytetrafluoroethylene with excellent insulation and corrosion resistance as the main manufacturing material of the multistage cathode auxiliary device, can ensure the service time of the complete set of device and can ensure that the device does not influence the quality of the shaped charge liner product.

3. The invention designs the annular shielding cover and the conical shielding cover which are matched with the shape of the shaped charge cover, changes the trend and the density distribution of electric field lines in the electroforming solution, and can control the metal deposition rate at the edge and the sharp corner of the shaped charge cover mandrel, thereby better regulating and controlling the tissue fineness of the electroforming shaped charge cover and avoiding the surface of a product from generating burrs or nodules.

4. The hoisting rod in the multi-stage hoisting structure can continuously stir the electroforming solution in the cathode rotation process, and is beneficial to the uniform distribution of all chemical components in the solution.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of a primary lifting flange of the present invention;

FIG. 3 is a front sectional view of a first-stage lifting flange plate according to the present invention;

FIG. 4 is a top view of the secondary lifting flanges of the present invention

FIG. 5 is a front sectional view of each secondary lifting flange of the present invention;

FIG. 6 is a top view of the dual-hole fixing frame of the present invention;

FIG. 7 is a top view of the three-hole fixing frame of the present invention;

FIG. 8 is a front view of a long lifting rod of the present invention;

FIG. 9 is a front view of the short lifting bar of the present invention;

FIG. 10 is a front view of the hollow connecting rod of the present invention;

FIG. 11 is a schematic view of a lead-out bolt;

FIG. 12 is a front sectional view of a cone shaped shield in accordance with the present invention;

FIG. 13 is a front sectional view of the annular shield of the present invention;

FIG. 14 is a front view of a primary liner core mold;

fig. 15 is a front view of a secondary liner core mold;

in the figure: 1-a primary hoisting flange, 2-a hollow connecting rod guide hole, 3-a short hoisting rod, 4-a conical shield cover, 5-a double-hole fixing frame, 6-a hoisting bolt, 7-a long hoisting rod, 8-a secondary hoisting flange, 9-a ring shield cover, 10-a three-hole fixing frame, 11-a small fastening nut, 12-a conductive bolt, 13-a large fastening nut, 14-a hoisting hole, 15-a hollow connecting rod, 16-a lead-out bolt, 17-a lead-in bolt, 18-a conductive bolt hole, 19-a primary hoisting flange hoisting hole, 20-a hoisting bolt hole, 21-a screw hole, 22-a fixing frame hoisting hole, 23-a lead-out bolt mounting hole, 24-a primary shaped charge cover, 25-a secondary shaped charge cover core mold, 26-a thin shaft end, 27-secondary circular truncated cone of a core mould, 28-large circular truncated cone of the core mould, and 29-hoisting bolt holes of the core mould.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in FIG. 1, a multistage auxiliary cathode device for manufacturing an electroformed liner comprises a multistage hoisting flange, short hoisting rods 3, a plurality of groups of long hoisting rods 7 and a plurality of hollow connecting rods 15. In this embodiment, two levels of hoisting flanges are taken as an example, and are a first level hoisting flange 1 and a second level hoisting flange 8 respectively. The adjacent first-stage hoisting flange 1 and the secondary hoisting flange 8 are connected through two long hoisting rods 7 at symmetrical positions, two ends of each long hoisting rod 7 are fastened through bolts, a hollow connecting rod 15 is installed between two adjacent stages of hoisting flanges, cathode wires among multiple stages of core molds penetrate through the hollow connecting rod 15, and a lead leading-out bolt 16 is arranged at the lower end of the hollow connecting rod 15; the middle part of each stage of hoisting flange is provided with a shaped charge cover mandrel, the uppermost stage of hoisting flange plate leads out cathode current through the shaped charge cover mandrel through a conductive bolt 12, the rest hoisting flanges at all stages receive cathodes to the shaped charge cover mandrels at all stages through lead-in bolts 17, an annular shielding cover 9 is arranged below each stage of hoisting flange plate, a short hoisting rod 3 is arranged on each stage of hoisting flange plate, and the lower end of the short hoisting rod 3 is connected with a conical shielding cover 4 through a shielding cover fixing frame 5. When the flange is installed, the conductive bolt holes 18 of each level of hoisting flange need to be in the same side and corresponding positions. When being installed, the liner core die hung at the first-stage hoisting flange passes through a hoisting hole 19 in the center of the hoisting flange, the thin shaft end 26 of the first-stage liner core die 24 is directly connected with the rotating mechanism of the electroforming equipment, and the other liner core dies at all stages are hung on the hoisting flanges at all stages through hoisting bolts 6. The lower parts of the hoisting flanges at all levels are provided with annular shielding covers 9 through threads.

The guide holes for mounting the long hoisting rod or the short hoisting rod on the multistage hoisting flange and the guide holes for mounting the hollow connecting rod are uniformly distributed on a circle with the same radius, and the included angle between the circle center of each two adjacent holes and the connecting line of the circle centers of the flanges is 60 degrees.

As shown in fig. 14 and 15, the lower end of the first-stage liner core die 24 is a tip part, the upper part of the tip part is connected with a core die large round table 28, the upper part of the core die large round table 28 is connected with a core die secondary round table 27, and the upper part of the core die secondary round table 27 is connected with a core die thin shaft end 26; the lower end of the secondary shaped charge cover core die 25 is a tip part, the upper part of the tip part is connected with a core die large round table 28, the upper part of the core die large round table 28 is connected with a core die secondary round table 27, and the top of the core die secondary round table 27 is provided with a core die hoisting bolt hole 29; the inner diameter of the annular shielding cover 9 is 25mm larger than the outer diameter of the core mould large round platform 28, and the height of the annular shielding cover is 10mm larger than the height of the core mould large round platform 28.

A thin shaft end 26 used for clamping a three-jaw chuck at the lower part of the rotating motor is arranged on the first-level shaped charge cover core mold 24; the mandrel 25 of the secondary shaped charge cover has a stub shaft removed, and a mandrel hoisting bolt hole 29 needs to be machined in the center of the mandrel secondary circular truncated cone 27, and the mandrel hoisting bolt hole 29 has the same aperture as the hoisting bolt hole 20 on the secondary hoisting flange 8.

The taper of the conical shielding cover 4 is the same as the taper of the outer contour tip part of the core mold of the shaped charge liner, the inner diameter of the maximum end circle of the conical shielding cover 4 is the same as the outer diameter of the large circular table of the core mold of the shaped charge liner, the inner depth of the conical shielding cover 4 is the same as the height of the conical part of the core mold of the shaped charge liner, and the distance between the small circular surface of the conical shielding cover 4 and the tip of the core mold of the shaped charge liner is 25-35 mm.

The liner core mold hung on the primary hoisting flange can directly adopt the original core mold, and the liner core molds hung on the other secondary hoisting flanges need to be provided with screw holes matched with hoisting bolts at the center of the top round surface.

Two short hoisting rods 3 are arranged on the hoisting flange plate at the lowest level and used for installing a shielding cover fixing frame 5.

The method comprises the mounting mode of each level of conical shielding cover 4, wherein for a first-level hoisting flange and a lowest-level hoisting flange, a short hoisting rod 3 can be mounted, a double-hole fixing frame 5 is additionally mounted, and the conical shielding cover 4 is mounted in a screw hole 21; or two short hoisting rods 3 can be arranged at the positions of two hoisting holes 14 which are symmetrical about the circle center, a three-hole fixing frame 10 is additionally arranged, and a conical shielding cover 4 is arranged in a screw hole 21 in the middle. For the middle hoisting flanges at all levels, in order to reserve enough hoisting holes 14 for the long hoisting rod 7, the conical shielding cover 4 is installed in a mode that one short hoisting rod 3 is matched with one double-hole fixing frame 5.

The cathode electrode of the invention is led out from the core mould of the liner on the first-stage hoisting flange by the conductive bolt 12, one end of the lead is connected to the conductive bolt 12 and is penetrated by the hollow connecting rod 15, and the lead is connected to the core moulds of other secondary liners by the lead leading-out bolt 16 and the lead leading-in bolt 17, thus all stages of electroforming core moulds are electroforming cathodes.

When the device is used, according to the requirements of each electroforming production station, the parts except the conical shielding cover 4 in the multi-stage auxiliary cathode device are firstly assembled, all stages of electroforming core molds are hung on the device, then the conical shielding cover 4 is installed on the double-hole or three-hole fixing frame, the alignment of the conical shielding cover 4 on the double-hole fixing frame 5 is checked, and then the device and all stages of chemical type cover core molds can be hung on the electroforming production station. After the hoisting of the invention is finished, the part below the lower end surface of the large circle of the first-stage hoisting flange is immersed in the electroforming solution, the core molds of the liner of each stage can synchronously rotate with the multi-stage auxiliary cathode device at the same frequency, and the liner on the core mold of the liner of the multi-stage liner of the same electroforming station can be electroformed in the same time period.