CN213632952U

CN213632952U - Shell case strength test frock

Info

Publication number: CN213632952U
Application number: CN202022151424.1U
Authority: CN
Inventors: 苏华
Original assignee: Ningbo Yuheng Energy Technology Co ltd
Current assignee: Ningbo Yuheng Energy Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-07-06
Anticipated expiration: 2030-09-27

Abstract

The utility model relates to a shell case strength test frock, including die, lower mould and well mould, the die is connected with the press, the lower mould is located the die under, the lower mould center is equipped with the trompil that is used for placing shell case and well mould, the lower mould is located the below of shell case, and when the shell case back that rises, can follow lower mould open-ended below ejecting with well mould, is equipped with the displacement sensor who is used for detecting the shell case displacement in the both sides of lower mould, can offset and press the drug shape cover at shell case inslot wall with the die when the shell case inner wall of shell case is provided with powder and die and moves down, is provided with the stopple sealed with the cavity through-hole of shell case in the upper portion centre bore of well mould. The utility model discloses can directly test the compressive capacity of shell case product, effectively judge the compressive process ability of the different forming processes of shell case, finally can conveniently guide the formula requirement and the pressure requirement that the pack explosive chooseed for use in the shell case.

Description

Shell case strength test frock

Technical Field

The utility model relates to a technical field of test fixture, more specifically relate to a shell case strength test fixture.

Background

In the process of forming a perforating bullet shell for oil exploitation, various processes such as hot forging, warm forging, cold extrusion, heat treatment and the like are adopted, and a test method of a common test rod is adopted in the machining process to test the compressive capacity of the bullet shell, but the data obtained by the test method is greatly different from the strength of a product after large deformation, so that the test effect is poor, the compressive capacity of the bullet shell in different forming processes cannot be effectively judged, and the formula requirement and the pressure requirement of filling explosives into the bullet shell cannot be effectively selected.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a can let the convenience to the shell case strength test, can directly test the compressive capacity of shell case product simultaneously, effectively judge the compressive process ability of the different forming processes of shell case, finally conveniently guide the shell case intussuseption to pack a formula requirement and a shell case strength test frock that the explosive chooseed for use.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a shell case strength test frock, includes die, lower mould and well mould, the die is connected with the press, the lower mould is located the die under, the lower mould center is equipped with the trompil that is used for placing shell case and well mould, the lower mould is located the below of shell case, and when the shell case rises greatly the back, can follow lower mould open-ended below ejecting with well mould, is equipped with the displacement sensor who is used for detecting the shell case displacement in the both sides of lower mould, can offset and press the drug shape cover at shell case inslot wall with the die when the shell case inner wall of shell case is provided with powder and die and moves down, is provided with the stopple sealed with the cavity through-hole of shell case in the upper portion centre bore of well mould.

Preferably, the opening of the cartridge case faces upwards, the shape of the medicine-shaped cover is the same as that of the cartridge case, the opening of the medicine-shaped cover faces upwards, the medicine powder is located between the inner wall of the cartridge case and the outer wall of the medicine-shaped cover, and the medicine powder is formed by mixing talcum powder and flour in a ratio of 3: 1.

Preferably, in order to enable the whole structure to be more reasonable and enable the whole structure to be better in fit degree during pressing down, the upper portion of the stamping die is installed at the upper end of the pressure frame through a handle, the lower end of the stamping die is conical, the lower end portion of the conical stamping die is an arc-shaped surface, and the conical outer wall can be abutted against the inner wall of the medicine-shaped cover during downward moving.

Preferably, in order to ensure the consistency of concentricity during mold closing and improve the accuracy of a pressing position, a positioning sleeve which is convenient for a punch die to penetrate through is sleeved above the lower mold, and the positioning sleeve, the lower mold and the punch die are kept in a concentric arrangement.

Preferably, in order to facilitate smooth air discharge when the punch die descends, the two sides of the positioning sleeve are provided with exhaust through holes, the lower surface of the positioning sleeve is provided with a buffer groove, and the exhaust through holes are communicated with the buffer groove and the inner wall of the cartridge case.

Preferably, in order to facilitate later replacement, the displacement sensor is fixed in corresponding fixing holes at two sides of the lower die through fastening screws.

Preferably, in order to ensure the smooth test, the inner wall of the opening in the center of the lower die and the outer diameter of the cartridge case have a test gap.

Preferably, the hole plug is made of plastic for improving the sealing effect.

Compared with the prior art, the utility model discloses an above-mentioned structure realizes the compressive capacity that can the direct test shell case product, effectively judges the compressive process ability of the different forming processes of shell case, finally can conveniently guide the prescription requirement and the pressure requirement that the pack explosive chooseed for use in the shell case.

Drawings

Fig. 1 is a schematic view of the overall structure of a cartridge case strength testing tool in this embodiment 1;

FIG. 2 is a schematic view of the structure of the die in this example 1;

fig. 3 is a schematic structural view of the lower mold in this embodiment 1.

Wherein: the device comprises a punch die 1, a lower die 2, a middle die 3, an opening 4, a cartridge case 5, a displacement sensor 6, a drug-shaped cover 7, medicine powder 8, a hole plug 9, a handle 10, a cone 11, an arc-shaped surface 12, a positioning sleeve 13, a fixing hole 14, an exhaust through hole 15, a fastening screw 16 and a buffer groove 17.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

Example 1:

as shown in fig. 1-3, the cartridge case strength testing tool disclosed in this embodiment includes a die 1, a lower die 2 and a middle die 3, the die 1 is connected to a press, the lower die 2 is located under the die 1, an opening 4 for placing a cartridge case 5 and the middle die 3 is provided in the center of the lower die 2, the lower die 2 is located under the cartridge case 5, and after the cartridge case 5 expands, the middle die 3 can be ejected out from the lower side of the opening of the lower die 2, displacement sensors 6 for detecting the displacement of the cartridge case 5 are provided on both sides of the lower die 2, a powder 8 is provided on the inner wall of the casing groove of the cartridge case 5, and when the die 1 moves down, a powder cover 7 capable of abutting against the die 1 and pressing the powder 8 against the inner wall of the casing groove of the cartridge case 5 is provided, and a hole plug 9 for sealing the hollow through hole of the cartridge case 5 is provided in the center hole of the upper.

Preferably, the opening of the cartridge case 5 faces upwards, the shape of the medicine-shaped cover 7 is the same as that of the cartridge case 5, the opening of the medicine-shaped cover 7 faces upwards, the medicine powder 8 is located between the inner wall of the cartridge case 5 and the outer wall of the medicine-shaped cover 7, and the medicine powder 8 is formed by mixing talcum powder and flour in a ratio of 3: 1.

Preferably, in order to make the whole structure more reasonable and make the fit better when pressing down, the upper part of the punch die 1 is mounted at the upper end of the pressure frame through a handle 10, the lower end of the punch die 1 is a cone 11, the lower end part of the cone 11 is an arc-shaped surface 12, and the outer wall of the cone 11 can be abutted against the inner wall of the medicine-shaped cover 7 when moving down.

Preferably, in order to ensure the concentricity during mold clamping and improve the accuracy of the pressing position, a positioning sleeve 13 for facilitating the penetration of the die 1 is sleeved on the lower die 2, and the positioning sleeve 13, the lower die 2 and the die 1 are arranged concentrically.

Preferably, in order to facilitate smooth air discharge when the die 2 descends, the two sides of the positioning sleeve 13 are provided with air discharge through holes 15, the lower surface of the positioning sleeve 13 is provided with a buffer groove 17, and the air discharge through holes 15 are communicated with the buffer groove 17 and the inner wall of the cartridge case 5.

Preferably, in order to facilitate later replacement, the displacement sensor 6 is fixed in corresponding fixing holes 14 on both sides of the lower die 2 by fastening screws 16.

Preferably, in order to ensure the test to be smooth, the inner wall of the opening 4 in the center of the lower die 2 has a test clearance with the outer diameter of the cartridge case 5.

Preferably, the hole plug 9 is made of plastic for improving the sealing effect.

During assembly, firstly, a handle 10 is arranged at the upper end of a press machine, the lower end of the handle is connected with a punch die 1, then a positioning sleeve 13 is sleeved on the outer diameter of the punch die 1 to keep the punch die 1 to be concentrically arranged with a lower die 2 and a test cartridge case 5 in the pressing process, meanwhile, air exhaust through holes 15 are formed in two sides of the positioning sleeve 13, air is conveniently exhausted when the punch die 1 descends, a limit test gap is kept between a central hole 4 of the lower die 2 and the outer diameter of the cartridge case 5, a middle die 3 is arranged to prevent medicine powder 8 in the cartridge case 5 from leaking out of a central hole of the cartridge case 5 in the medicine pressing process, the cartridge case 5 is sequentially filled with medicine powder 8 and a medicine shape cover 7, the whole equipment is assembled, during work, the punch die 1 is driven by the press machine to move downwards to extrude the medicine shape cover 7 and the medicine powder 8, during the continuous pressing process, the outer diameter of the cartridge case 5 is, the realization is to product pressure test, then after the test is accomplished, the press drives die 1 rebound, utilizes the quick pressure release back of exhaust through-hole 15, and the shell case 5 that is surveyed is ejecting from lower mould 2 by well mould 3 rebound again, accomplishes the test once, consequently realizes the compressive capacity that can directly test the shell case product through above-mentioned structure, effectively judges the compressive process ability of the different shaping processes of shell case, can conveniently guide the formula requirement and the pressure requirement that the pack explosive chooseed for use in the shell case finally.

Of course, the above is only a specific application example of the present invention, and the protection scope of the present invention is not limited at all. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a shell case strength test frock, includes die (1), lower mould (2) and well mould (3), its characterized in that: the punching die is characterized in that the punching die (1) is connected with a press machine, the lower die (2) is located under the punching die (1), the center of the lower die (2) is provided with a hole (4) for placing a cartridge case (5) and a middle die (3), the lower die (2) is located below the cartridge case (5), the middle die (3) can be ejected out of the lower opening of the lower die (2) after the cartridge case (5) expands, displacement sensors (6) for detecting the displacement of the cartridge case (5) are arranged on two sides of the lower die (2), powder (8) and the punching die (1) are arranged on the inner wall of a shell groove of the cartridge case (5), the powder cover (7) can be abutted to the punching die (1) and press the powder (8) on the inner wall of the shell case (5), and a hole plug (9) for sealing a hollow through hole of the cartridge case (5) is arranged in the center hole in the upper portion of the middle die (3).

2. The cartridge case strength test tool of claim 1, characterized in that: the opening of the cartridge case (5) faces upwards, the shape of the medicine-shaped cover (7) is the same as that of the cartridge case (5), the opening of the medicine-shaped cover (7) faces upwards, the medicine powder (8) is located between the inner wall of the cartridge case (5) and the outer wall of the medicine-shaped cover (7), and the medicine powder (8) is formed by mixing talcum powder and flour in a ratio of 3: 1.

3. The cartridge case strength test tool of claim 2, characterized in that: the upper end of the pressure frame is installed above the punch die (1) through a handle (10), the lower end of the punch die (1) is a cone (11), the lower end of the cone (11) is an arc-shaped surface (12), and the outer wall of the cone (11) can be abutted to the inner wall of the medicine-shaped cover (7) when moving downwards.

4. The cartridge case strength testing tool of claim 1, 2 or 3, characterized in that: a positioning sleeve (13) which is convenient for the punch die (1) to penetrate through is sleeved above the lower die (2), and the positioning sleeve (13), the lower die (2) and the punch die (1) are arranged concentrically.

5. The cartridge case strength test tool of claim 4, characterized in that: be equipped with exhaust through-hole (15) in the both sides of position sleeve (13), be equipped with buffer groove (17) at the lower surface of position sleeve (13), exhaust through-hole (15) and buffer groove (17) and shell case (5) inner wall intercommunication.

6. The cartridge case strength testing tool of claim 1, 2, 3 or 5, wherein: the displacement sensor (6) is fixed in corresponding fixing holes (14) at two sides of the lower die (2) through fastening screws (16).

7. The cartridge case strength testing tool of claim 1, 2, 3 or 5, wherein: and a test gap is formed between the inner wall of the opening (4) in the center of the lower die (2) and the outer diameter of the cartridge case (5).

8. The cartridge case strength testing tool of claim 1, 2, 3 or 5, wherein: the hole plug (9) is made of plastic.