Two-step punch forming tool

Abstract

The utility model provides a two-step punch forming tool. The tool comprises a die handle (1), an upper die plate (2), an upper die plate base plate (3), a fixed punching plate (4), a guide sleeve (5), a blanking punch (6), a fixed plate (7), a discharging plate (8), a concave die plate (9), a positioning punch (10), a lower die plate base plate (11), a lower die plate (12), a ball guide column (13), a die foot (14), a discharging hose (15), a blanking die (16), a first hexagonal head bolt (17), a floating pin (18), a forming die (19), a forming punch (20), a second hexagonal head bolt (21) and a third hexagonal head bolt (22). By means of the function of the two-step punch forming tool, the size stability of a firestand product and the perpendicularity of a cut face are improved, the contact area between the firestand product and the inner wall of a primer shell is increased during assembly, then the friction force and the assembly strength are improved, the problems of inclination, overturning and the like of the firestand are solved, and it is guaranteed that the primer can be smoothly fired during finished bullet shooting.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of projectile manufacturing technology, and relates to a two-step stamping forming tool. BACKGROUND

[0002] At present, the fire table product is formed by blanking once, the original fire table product 23 has large springback after processing, the perpendicularity of the cut surface of the fire table to the horizontal plane is poor, the contact area is small when the fire table is assembled with the bottom shell 25 through interference extrusion, the assembly strength is low, the fire table is prone to problems such as inclination and overturning, and the primer cannot be smoothly fired when the bullet is fired. CONTENT

[0003] The technical problem of the utility model is:

[0004] The original fire table product 23 has large springback after processing, the perpendicularity of the cut surface of the fire table to the horizontal plane is poor, the contact area is small when the fire table is assembled with the bottom shell 25 through interference extrusion, the assembly strength is low, the fire table is prone to problems such as inclination and overturning, and the primer cannot be smoothly fired when the bullet is fired.

[0005] The utility model aims at:

[0006] The utility model is just designed for the above problems, a two-step stamping forming tool, the purpose is to change the original fire table product 23 into a new fire table product 24 shape through step forming, ensure the perpendicularity of the cut surface, reduce the processing springback, improve the contact area when the fire table is assembled with the bottom shell 25, and then improve the friction and assembly strength, and ensure the primer to be fired smoothly.

[0007] The technical scheme of the utility model is:

[0008] The utility model provides a two-step stamping forming tool, which is used for processing new fire table products 24. The tool comprises a die handle 1, an upper die plate 2, an upper die plate backing plate 3, a fixed punching plate 4, a guide sleeve 5, a blanking punch 6, a fixed plate 7, a discharging plate 8, a concave die plate 9, a positioning punch 10, a lower die plate backing plate 11, a lower die plate 12, a ball guide column 13, a die foot 14, a discharging hose 15, a blanking die 16, a first hexagonal head bolt 17, a floating material pin 18, a forming die 19, a forming punch 20, a second hexagonal head bolt 21, and a third hexagonal head bolt 22. The upper die plate 2 is connected to the die handle 1 through a threaded hole at the center thereof. The guide sleeve 5 is inlaid in the upper die plate 2 through interference fit. The ball guide column 13 is inlaid in the lower die plate 12 through interference fit. When the die is in a closed state, the ball guide column 13 is in the guide sleeve 5. The second hexagonal head bolt 21 is arranged in the upper die plate 2 to fasten the upper die plate backing plate 3, the fixed punching plate 4, and the fixed plate 7 together. The first hexagonal head bolt 17 is arranged in the lower die plate 12 to fasten the lower die plate backing plate 11 and the concave die plate 9 together. The die foot 14 is arranged below the lower die plate 12 to increase the height of the overall die. The discharging plate 8 is connected to the upper die plate 2 through the third hexagonal head bolt 22. The positioning punch 10 is arranged in the fixed punching plate 4 to play a role in positioning the die during processing. The floating material pin 18 is supported by a spring and suspended in the concave die plate 9 to suspend the raw material brass strip at a specified position. The forming punch 20 is arranged in the fixed punching plate 4, penetrates through the fixed plate 7, and cooperates with the forming die 19 inlaid in the concave die plate 9 to process the brass strip into the shape required by the new fire table product 24.

[0009] Preferably, the forming punch 20 is arranged in the fixed punching plate 4, penetrates through the fixed plate 7, and cooperates with the forming die 19 inlaid in the concave die plate 9 to process the brass strip into the shape required by the fire table product 24. The fire table product processed by the tool is a shape improved on the basis of the original processed product, and the R angle of the bottom edge of the cut surface of the product is increased to R0.8, thereby improving the dimensional stability. Figure 3b

[0010] Preferably, the guide sleeve 5 enters the ball guide column 13 when the die is closed. The positioning punch 10 enters the positioning hole in the vertical corresponding position of the concave die plate 9 and the lower die plate backing plate 11 when the die is running, thereby ensuring accurate positioning and high dimensional accuracy of the processed product.

[0011] Preferably, compared with the fire table product 23 processed by the original one-step forming and blanking processing method, the forming and blanking are divided into two steps, thereby improving the dimensional stability of the fire table product 24 and the perpendicularity of the cut surface of the fire table product and reducing the processing springback.

[0012] Preferably, the blanking dies 16 are closely arranged on the concave die plate 9 as shown in the drawing, thereby achieving one-out-nine discharging, improving the processing efficiency, and increasing the material utilization rate. Figure 2

[0013] ​​Preferably, the nine products produced after the punching are respectively into the corresponding discharge hose 15 through the corresponding discharge hole of the lower die pad 11 and the lower die 12, and accurately fall into the corresponding material container, facilitating discharge and distinction.

[0014] The utility model discloses the advantages and beneficial effects are:

[0015] Utilize two step stamping forming tool's function, promote fire platform product size stability and the perpendicularity of cut surface, improve the contact area with the inner wall of primer shell when assembling, and then improve the friction and assembly strength, solve the problem such as fire platform inclination, overturning, ensure that primer can be smoothly fired when shooting. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the embodiment of the utility model will be briefly introduced as follows, and obviously, the drawings described below are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for the person skilled in the art.

[0017] Figure 1 It is two step stamping forming tool structure schematic diagram for an embodiment of the utility model;

[0018] Figure 2 It is the arrangement distribution state schematic diagram of blanking die on the concave die pad;

[0019] Fig. 3 (a) (b) is the fire platform product diagram of an embodiment before and after optimization.

[0020] Figure 4 It is the fire platform and primer shell assembly drawing for an embodiment of the utility model.

[0021] Wherein: 1 die handle, 2 upper die plate, 3 upper die pad, 4 fixed punch plate, 5 guide sleeve, 6 blanking punch, 7 fixed plate, 8 stripper plate, 9 concave die plate, 10 positioning punch, 11 lower die pad, 12 lower die, 13 ball guide pillar, 14 die foot, 15 discharge hose, 16 blanking die, 17 first hexagonal head bolt, 18 floating pin, 19 forming die, 20 forming punch, 21 second hexagonal head bolt, 22 third hexagonal head bolt, 23 original fire platform product, 24 new fire platform product, 25 primer shell. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. In the case of no conflict, the features in the embodiments of the utility model and the embodiments can be combined with each other, and each embodiment can be mutually referenced and quoted. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] Please refer to Figure 1 Two-step stamping forming tooling, comprising: die handle 1, upper die plate 2, upper die plate gasket 3, solid punch plate 4, guide sleeve 5, blanking punch 6, fixed plate 7, unloading plate 8, concave die plate 9, positioning punch 10, lower die plate gasket 11, lower die plate 12, ball guide column 13, die foot 14, discharge hose 15, blanking die 16, first hexagonal head bolt 17, floating pin 18, forming die 19, forming punch 20, second hexagonal head bolt 21, third hexagonal head bolt 22.

[0024] Among them, the upper die plate 2 is connected with the die handle 1 through the threaded hole at the center, the guide sleeve 5 is inlaid in the upper die plate 2 through interference fit, the ball guide column 13 is inlaid in the lower die plate 12 through interference fit, and the die is like Figure 1 When the die is in the closed state, the ball guide column 13 is in the guide sleeve 5, responsible for guiding and aligning the whole die set, the second hexagonal head bolt 21 is placed in the upper die plate 2, the upper die plate gasket 3, the solid punch plate 4 and the fixed plate 7 are fastened together, the first hexagonal head bolt 17 is placed in the lower die plate 12, the lower die plate gasket 11 and the concave die plate 9 are fastened together, the die foot 14 is placed below the lower die plate 12, the overall die height is improved, the unloading plate 8 is connected with the upper die plate 2 through the third hexagonal head bolt 22, the positioning punch 10 is placed in the solid punch plate 4, and the die positioning effect during processing is achieved, the floating pin 18 is supported by the spring and suspended in the concave die plate 9, the raw material brass strip is suspended at the specified position, the forming punch 20 is placed in the solid punch plate 4, passes through the fixed plate 7, and cooperates with the forming die 19 inlaid in the concave die plate 9, so that the shape required by the fire table product 24 is processed from the brass strip, the blanking punch 6 is placed in the solid punch plate 4, passes through the fixed plate 7, and cooperates with the blanking die 16 inlaid in the concave die plate 9, so that the blanking work of the fire table product 24 is completed, and the blanked product falls into the material container through the discharge hose 15.

[0025] In some embodiments, the two-step stamping forming tool, when working, sends the brass strip to above the concave die plate 9 through the floating pin 18 clamping groove, after the unloading plate 8 contacts and presses the brass strip after starting, the forming punch 20 acts on the brass strip, so that the brass strip contacts the forming die 19, under the cooperation of the two, the shape of the required product is formed, as the brass strip advances to the place where the blanking punch 6 and the blanking die 16 are located, under the cooperation of the two, the formed product is punched and falls from the brass strip, falls into the material container through the discharge hose 15, completes the punching process, and then continuously operates.

[0026] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A two-step press forming tooling for machining a new hearth product (24), characterized by: The tooling includes: a die handle (1), an upper die plate (2), an upper die plate backing plate (3), a fixed punch plate (4), a guide sleeve (5), a blanking punch (6), a fixed plate (7), a stripper plate (8), a die plate (9), a positioning punch (10), a lower die plate backing plate (11), a lower die plate (12), a ball guide column (13), a die foot (14), a discharge hose (15), a blanking die (16), a first hexagonal head bolt (17), a floating pin (18), a forming die (19), a forming punch (20), a second hexagonal head bolt (21), a third hexagonal head bolt (22), wherein: the upper die plate (2) is connected to the die handle (1) through the threaded hole at the center thereof; the guide sleeve (5) is inlaid in the upper die plate (2) through interference fit; the ball guide column (13) is inlaid in the lower die plate (12) through interference fit; when the die is in a closed state, the ball guide column (13) is in the guide sleeve (5); the second hexagonal head bolt (21) is placed in the upper die plate (2), fastening the upper die plate backing plate (3), the fixed punch plate (4) and the fixed plate (7) together, the first hexagonal head bolt (17) is placed in the lower die plate (12), fastening the lower die plate backing plate (11) and the die plate (9) together, the die foot (14) is placed below the lower die plate (12), raising the overall die height, the stripper plate (8) is connected to the upper die plate (2) through the third hexagonal head bolt (22), the positioning punch (10) is placed in the fixed punch plate (4), serving as a die positioning function during processing, the floating pin (18) is supported by a spring and suspended in the die plate (9), suspending the raw material brass strip at a specified position, the forming punch (20) is placed in the fixed punch plate (4), passing through the fixed plate (7) and cooperating with the forming die (19) inlaid in the die plate (9), to process the shape required for the new fire table product (24) from the brass strip.

2. The two-step press forming tooling apparatus according to claim 1, wherein Wherein: The guide sleeve (5) enters the ball guide column (13) when the die is closed, and the positioning punch (10) enters the positioning hole in the vertical corresponding position of the die plate (9) and the lower die plate backing plate (11) when the die is running, to ensure accurate positioning.

3. The two-step press forming tooling of claim 1, wherein, Wherein: The number of blanking dies (16) is 9, which are closely arranged on the die plate (9).

4. The two-step press forming tooling of claim 1, wherein, Wherein: The nine new fire table products (24) produced after punching are respectively fed into the corresponding discharge hose (15) through the corresponding discharge holes in the lower die plate backing plate (11) and the lower die plate (12).

5. A two-step press forming tool according to any one of claims 1 to 4, wherein Wherein: The new fire table product (24) is the shape improved based on the original fire table product (23), and the R angle of the product cut surface bottom edge is increased.

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