CN212134377U - Metal thin plate and metal thin strip shear strength measuring die - Google Patents
Metal thin plate and metal thin strip shear strength measuring die Download PDFInfo
- Publication number
- CN212134377U CN212134377U CN202020119358.7U CN202020119358U CN212134377U CN 212134377 U CN212134377 U CN 212134377U CN 202020119358 U CN202020119358 U CN 202020119358U CN 212134377 U CN212134377 U CN 212134377U
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- upper die
- guide plate
- die
- pressing
- groove
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- 239000002184 metal Substances 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 238000007723 die pressing method Methods 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000004154 testing of material Methods 0.000 description 9
- 238000004080 punching Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007660 shear property test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a shear strength measuring mould for metal sheets and metal thin strips, relating to the technical field of test moulds; the die comprises an upper die, a lower die and a guide plate, wherein the lower die is provided with an upper die pressing groove, the guide plate is fixed above the lower die through a guide plate positioning pin, the guide plate is provided with an upper die mounting groove with an opening at one side, and the upper die is arranged in the upper die mounting groove in a penetrating manner and can be pressed into the upper die pressing groove downwards; the lower die and the guide plate are provided with workpiece blank pressing strips on two sides of the upper die pressing groove, the guide plate is provided with clamping screws for pressing the workpiece blank pressing strips in a penetrating mode, the lower die is further provided with pin holes on two sides of the upper die pressing groove, and workpiece positioning pins are arranged in the pin holes. Compared with the prior art, the utility model discloses can solve the great problem of error when the shear strength of survey sheet metal, thin area of current method.
Description
Technical Field
The utility model belongs to the technical field of experimental mould technique and specifically relates to a sheet metal, thin shear strength survey mould that takes.
Background
The national standard related to the metal material test method only has GB/T6400-2007 wire shear test method, but the method in the standard is only used for measuring the metal bar, and no special die and method are used for measuring the shear strength of the metal sheet and the thin strip at normal temperature; in the production practice, the shear strength of the metal sheet and the thin strip is used in many fields such as stamping, hardware, mechanical design, military industry and the like, so in the actual work, the shear strength of the metal sheet and the thin strip is often measured according to the stamping principle, but the measuring mode can only be installed on a punch press and cannot be used together with a universal material testing machine, the actual punching pressure is much higher than the shear force during measurement, and the measuring result has larger friction force and material returning elasticity, so that larger errors exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sheet metal, thin shear strength survey mould that takes, it can solve the great problem of error when surveying the shear strength of sheet metal, thin area of current method.
In order to solve the above problem, the utility model discloses a technical scheme is: the shear strength measuring die for the metal sheet and the thin strip comprises an upper die, a lower die and a guide plate, wherein an upper die pressing groove is formed in the lower die, the guide plate is fixed above the lower die through a guide plate positioning pin, an upper die mounting groove with an opening at one side is formed in the guide plate, and the upper die is mounted in the upper die mounting groove in a penetrating mode and can be pressed into the upper die pressing groove downwards; the lower die and the guide plate are provided with workpiece blank pressing strips on two sides of the upper die pressing groove, the guide plate is provided with clamping screws for pressing the workpiece blank pressing strips in a penetrating mode, the lower die is further provided with pin holes on two sides of the upper die pressing groove, and workpiece positioning pins are arranged in the pin holes.
In the above technical solution, a more specific technical solution may also be: the upper die pressing groove is a dovetail groove with a small upper part and a big lower part.
Furthermore, the opening width of the upper die pressing groove is larger than that of the upper die mounting groove.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
the utility model discloses can use with the combination of universal material testing machine, the biggest shearing force is very close with actual punching press power, makes the sample work piece shear under pure shear state, and frictional force and material returned elasticity have been eliminated to the utmost extent, and the measuring result fluctuation range is very little, and the error is also very little, and the uncertainty of experimental result can be controlled at very little scope, and is accurate reliable to the repeatability and the reproducibility of survey process are good. The utility model discloses can extensively be used for trades such as punching press, five metals, machinery, military project, have unable estimation effect to national economic development, have great meaning to promoting punching press industrial development.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the lower die of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the structure of the guide plate of FIG. 1;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic structural view of the upper die of FIG. 1;
fig. 8 is a left side view of fig. 7.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
the shear strength measuring die for the metal thin plate and the thin strip as shown in fig. 1 to 8 comprises an upper die 1, a lower die 2 and a guide plate 3, wherein the lower die 2 is provided with an upper die pressing groove, the guide plate 3 is fixed above the lower die 2 through a guide plate positioning pin 4, the guide plate 3 is provided with an upper die mounting groove with an opening at one side, and the upper die 1 is arranged in the upper die mounting groove in a penetrating manner and can be pressed into the upper die pressing groove downwards; work piece blank pressing strips 5 are arranged on two sides of the upper die pressing groove between the lower die 2 and the guide plate 3, clamping screws 6 used for pressing the work piece blank pressing strips 5 are arranged on the guide plate 3 in a penetrating mode, pin holes are further formed in two sides of the upper die pressing groove of the lower die 2, and work piece positioning pins 7 are arranged in the pin holes.
The upper die pressing groove is a dovetail groove with a small upper part and a big lower part; the opening width of the upper die pressing groove is larger than that of the upper die mounting groove.
The utility model discloses be applied to the working procedure in the experiment as follows:
(1) in sheet metal, thin measuring process who takes shear strength, the utility model discloses need use with the universal material testing machine by computer software control jointly, will the utility model discloses put on universal material testing machine's automatically regulated base to mould 1 is gone up in taking out.
(2) Selecting a sample workpiece 8 from a metal thin plate or a thin strip, measuring the accurate size of the length, the width and the thickness of the sample workpiece 8, inputting the size into computer software, placing the sample workpiece 8 on the upper surface of the lower die 2, positioning the sample workpiece 8 by abutting against a workpiece positioning pin 7, and enabling the center line of the sample workpiece 8 to coincide with the center line of the lower die 2 as much as possible; and then, placing the workpiece blank holder strip 5 on the upper surface of the sample workpiece 8, and screwing the clamping screw 6, wherein a gap of about 1mm is kept between the workpiece blank holder strip 5 and the side wall of the upper die 1.
(3) Putting the upper die 1 into the upper die mounting groove, moving an upper cross beam of the universal material testing machine downwards to enable the lower end face of an upper seat mounted below the upper cross beam to stop at a position 1-5 mm away from the top surface of the upper die 1, then setting a shearing force 0 point value on computer software, and clicking a test button.
(4) The upper cross beam moves downwards according to the shear test speed preset by computer software, when the lower end face of the upper seat contacts the top face of the upper die 1, the universal material testing machine applies shear force to the sample workpiece 8 through the upper die 1, when the shear force reaches a certain value, the sample workpiece 8 is sheared, and the universal material testing machine stops automatically.
(5) The universal material testing machine is provided with a force sensor and connected to a computer, computer software can automatically record and display the maximum shear force value, the software can automatically calculate the shear strength of the sample workpiece 8 when a report is generated, and the calculation formula is as follows: shear strength is equal to the maximum shear divided by the shear area, which is equal to 2 times the product of the width and thickness of the specimen workpiece.
The experimental results are as follows:
taking 5 sample workpieces on the same metal sheet, and carrying out experiments according to the working steps, wherein the die parameters are as follows: the width h1 of the upper die is 26.04mm, the width h2 of the opening of the upper die pressing groove is 26.28mm, the double-sided gap between the upper die and the opening of the upper die pressing groove is 0.24 mm, and the shear test speed is 50 mm/min;
the shear strengths obtained are as follows:
according to the above experimental result, the utility model discloses can use with the combination of universal material testing machine, the biggest shearing force is very close with actual punching press power, makes the sample work piece shear under pure shear condition, and frictional force and material returned elasticity have been eliminated to the utmost extent, and the fluctuation range of testing result is very little, and the error is also very little, and the uncertainty of experimental result can be controlled in very little scope, and is accurate reliable to the repeatability and the reproducibility of survey process are good. The utility model discloses can extensively be used for trades such as punching press, five metals, machinery, military project, have unable estimation effect to national economic development, have great meaning to promoting punching press industrial development.
Claims (3)
1. A metal sheet and metal thin strip shear strength survey mould which characterized in that: the die comprises an upper die, a lower die and a guide plate, wherein the lower die is provided with an upper die pressing groove, the guide plate is fixed above the lower die through a guide plate positioning pin, the guide plate is provided with an upper die mounting groove with an opening at one side, and the upper die is arranged in the upper die mounting groove in a penetrating manner and can be pressed into the upper die pressing groove downwards; the lower die and the guide plate are provided with workpiece blank pressing strips on two sides of the upper die pressing groove, the guide plate is provided with clamping screws for pressing the workpiece blank pressing strips in a penetrating mode, the lower die is further provided with pin holes on two sides of the upper die pressing groove, and workpiece positioning pins are arranged in the pin holes.
2. The shear strength measuring die for thin metal plates and thin metal strips according to claim 1, wherein: the upper die pressing groove is a dovetail groove with a small upper part and a big lower part.
3. The shear strength measuring mold for thin metal plates and thin metal strips according to claim 1 or 2, characterized in that: the opening width of the upper die pressing groove is larger than that of the upper die mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020119358.7U CN212134377U (en) | 2020-01-19 | 2020-01-19 | Metal thin plate and metal thin strip shear strength measuring die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020119358.7U CN212134377U (en) | 2020-01-19 | 2020-01-19 | Metal thin plate and metal thin strip shear strength measuring die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212134377U true CN212134377U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020119358.7U Expired - Fee Related CN212134377U (en) | 2020-01-19 | 2020-01-19 | Metal thin plate and metal thin strip shear strength measuring die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212134377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606961A (en) * | 2024-01-22 | 2024-02-27 | 天津市丰和博科技发展有限公司 | Mould intensity detection equipment |
-
2020
- 2020-01-19 CN CN202020119358.7U patent/CN212134377U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606961A (en) * | 2024-01-22 | 2024-02-27 | 天津市丰和博科技发展有限公司 | Mould intensity detection equipment |
| CN117606961B (en) * | 2024-01-22 | 2024-04-05 | 天津市丰和博科技发展有限公司 | Mould intensity detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Dunjia Inventor after: Chen Yi Inventor after: Gong Xinling Inventor after: Feng Minxian Inventor after: Zhou Guanglin Inventor before: Chen Dunjia Inventor before: Chen Yi Inventor before: Guan Xinling Inventor before: Feng Minxian Inventor before: Zhou Guanglin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 |