CN211061335U - Large-size limit vault height experimental device - Google Patents
Large-size limit vault height experimental device Download PDFInfo
- Publication number
- CN211061335U CN211061335U CN201920658206.1U CN201920658206U CN211061335U CN 211061335 U CN211061335 U CN 211061335U CN 201920658206 U CN201920658206 U CN 201920658206U CN 211061335 U CN211061335 U CN 211061335U
- Authority
- CN
- China
- Prior art keywords
- die
- blank
- forming
- plate
- cylinder
- 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.)
- Active
Links
Images
Abstract
A large-size limit vault height experimental device comprises a power mechanism, a forming mechanism and a base, wherein the forming mechanism comprises an upper fixing table board, a female die mounting plate, a female die, a male die, a blank holder, a lower die fixing plate, a sliding block, a lower fixing table board and an upright post; the power mechanism comprises a main stamping cylinder, a blank pressing cylinder sleeved on the upper part of the main stamping cylinder, an ejector rod and a transmission structure. The diameter of the female die is 280mm, the diameter of the male die is 250mm, and the inner diameter of the blank holder is 250 mm. The press forming force of the main stamping cylinder is 250 tons, and the blank pressing force of the blank pressing cylinder is 150 tons. The experimental device adopts a large-size die, is matched with a large-tonnage double-action hydraulic press, and can meet the requirement of detecting the forming performance of a medium-thickness metal plate with the thickness of 2-4 mm. The blank of the forming performance detection equipment for the medium-thickness metal plate with the thickness of 2-4mm is filled.
Description
Technical Field
The utility model relates to a sheet metal formability can detect the field, especially relate to the automobile when medium and thick aluminum alloy plate takes shape that formability can detect and a jumbo size limit vault height experimental apparatus that the rule of failure established.
Background
With the increasing strictness of energy conservation and emission reduction and environmental protection policies, the light weight of automobiles becomes a trend. Aluminum alloy has become the first choice material in the solution of light weight of automobiles by virtue of its advantages of low density, high specific strength, corrosion resistance, easy recovery and the like.
Because of the great difference of the physical and mechanical properties of aluminum alloy and steel, in the application process of replacing steel with aluminum, an aluminum alloy plate forming performance evaluation and authentication system needs to be reestablished, secondary research and development of an aluminum alloy plate stamping forming process are carried out, and for the evaluation of the forming performance and the establishment of failure criteria, a limit dome height experiment (L DH) is an effective detection means in the automobile plate stamping industry, can visually indicate the deformation condition of the plate in the forming process, and a forming limit curve (F L C curve) formed by the limit dome height experiment can also be directly applied to plate stamping forming simulation.
Standardized equipment (60 tons and 100 tons) and dies (50 mm and 100mm in diameter) for detecting the sheet forming performance on the market currently can only accurately detect the forming performance of the aluminum alloy sheet within 2mm in thickness. For aluminum alloy plates with the plate thickness of 2-4mm, non-standardized equipment and dies for detecting the forming performance of the aluminum alloy plates are not reported.
The sheet forming performance detection device has more proposals, such as:
CN 200820108648-warm environment universal plate formability testing machine;
CN 201410027766-a concentric bipolar hydraulic plate forming tester;
CN 201610320000-a thin plate high temperature forming limit test device;
CN 201620317660-a double-power electro-hydraulic servo punch.
The prior art and the equipment can stretch and deform the thin plate from a single direction or multiple directions, and simultaneously, the prior art and the equipment also realize the detection of the forming performance of the thin plate at normal temperature or high temperature. However, the current technology and standard equipment are only suitable for thin plates with the thickness within 2mm, and practice proves that the existing standard forming performance detection equipment is not suitable for aluminum alloy medium and thick plates with the thickness of 2-4mm, so that the forming limit parameters of the current aluminum alloy thick plate are incomplete, and the application and popularization of the aluminum alloy thick plate in the field of automobiles are seriously influenced.
Disclosure of Invention
In order to solve the problems, the utility model provides a large-size limit vault height experimental device, which comprises a power mechanism, a forming mechanism and a base, wherein the forming mechanism comprises an upper fixed table board, a female die mounting plate, a female die, a male die, a blank holder, a lower die fixing plate, a slide block, a lower fixed table board and a stand column; the power mechanism comprises a main stamping cylinder, a blank pressing cylinder sleeved on the upper part of the main stamping cylinder, an ejector rod and a transmission structure. The diameter of the female die is 280mm, the diameter of the male die is 250mm, and the inner diameter of the blank holder is 250 mm. The press forming force of the main stamping cylinder is 250 tons, and the blank pressing force of the blank pressing cylinder is 150 tons. The sizes of the upper fixed table top and the sliding block are 1800mm x 220mm, and the size of the lower die fixed plate is 1000mm x 850 mm.
The experimental device adopts a large-size die, is matched with a large-tonnage double-action hydraulic press, and can meet the requirement of detecting the forming performance of a medium plate with the thickness of 2-4 mm. The blank of the forming performance detection equipment for the medium plate with the thickness of 2-4mm is filled, an experimental means is provided for obtaining accurate forming limit parameters of the medium plate, and an accurate theoretical basis is provided for the application of the aluminum alloy medium plate on the automobile.
Drawings
FIG. 1 is a schematic structural view of an experimental apparatus of the present invention;
FIG. 2 is a schematic cross-sectional view of the female mold of the present invention;
fig. 3 is a schematic sectional view of the male mold and the blank holder of the present invention.
Detailed Description
Referring to fig. 1, 2 and 3, the experimental device for the height of the large-size limit vault comprises a power mechanism 14, a forming mechanism 15 and a base 16, wherein the forming mechanism 15 comprises an upper fixing table board 1, a female die mounting plate 2, a female die 3, a male die 4, a blank holder 5, a lower die fixing plate 6, a sliding block 7, a lower fixing table board 8 and an upright post 13; the power mechanism 14 comprises a main stamping cylinder 9, a blank pressing cylinder 10 sleeved on the upper part of the main stamping cylinder 9, a mandril 11 and a transmission structure 12. The diameter of the female die 3 is 280mm, the diameter of the male die 4 is 250mm, and the inner diameter of the blank holder 5 is 250 mm. The press forming force of the main stamping cylinder 9 is 250 tons, and the blank pressing force of the blank pressing cylinder 10 is 150 tons. The sizes of the upper fixed table board 1 and the slide block 7 are 1800mm x 220mm, and the size of the lower die fixed plate 6 is 1000mm x 850 mm.
The experimental device comprises the following steps:
the method comprises the following steps: the blank pressing cylinder 10 acts the blank pressing force on the sliding block 7 upwards through the transmission structure 12, the sliding block 7 pushes the blank pressing ring 5 to move upwards, and the blank pressing ring 5 stops running until the position of the blank pressing ring 5 is 45mm higher than the male die;
step two: placing the test plate material above the blank holder 5;
step three: continuing the movement of the first step, the blank holder cylinder 10 continues to provide blank holder force, the slide block 7 continues to drive the blank holder 5 to move upwards until the blank holder is attached to the female die 3, and the plate is tightly pressed;
step four: the main stamping cylinder 9 provides a press forming force to push the ejector rod 11 to move upwards, the ejector rod 11 acts on the male die 4 to push the male die 4 to move upwards until the test plate is touched to a cracking area, the ascending speed of the male die 4 is reduced at the moment, the ascending is continued until the plate is cracked, and the forming process is finished;
step five: the hydraulic pressure of the main stamping cylinder 9 is removed, and the ejector rod 11 and the male die 4 both move downwards to the initial position; step six: and (3) removing the hydraulic pressure of the edge pressing cylinder 10, descending the edge pressing cylinder 10, taking out the formed part, and completing the single limit dome height test.
Claims (4)
1. A big size limit vault height experimental apparatus which characterized in that: the forming mechanism (15) comprises an upper fixing table top (1), a female die mounting plate (2), a female die (3), a male die (4), a blank holder (5), a lower die fixing plate (6), a sliding block (7), a lower fixing table top (8) and an upright post (13); the power mechanism (14) comprises a main stamping cylinder (9), a blank pressing cylinder (10) sleeved on the upper portion of the main stamping cylinder (9), a push rod (11) and a transmission structure (12).
2. The experimental device for the height of the large-size limit vault according to claim 1, wherein: the diameter of the female die (3) is 280mm, the diameter of the male die (4) is 250mm, and the inner diameter of the blank holder (5) is 250 mm.
3. The experimental device for the height of the large-size limit vault according to claim 1, wherein: the press forming force of the main stamping cylinder (9) is 250 tons, and the blank pressing force of the blank pressing cylinder (10) is 150 tons.
4. A large size limit dome height experiment apparatus according to any one of claims 1 to 3, wherein: the size of the upper fixed table top (1) and the slide block (7) is 1800mm x 220mm, and the size of the lower die fixed plate (6) is 1000mm x 850 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658206.1U CN211061335U (en) | 2019-05-08 | 2019-05-08 | Large-size limit vault height experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658206.1U CN211061335U (en) | 2019-05-08 | 2019-05-08 | Large-size limit vault height experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211061335U true CN211061335U (en) | 2020-07-21 |
Family
ID=71589157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920658206.1U Active CN211061335U (en) | 2019-05-08 | 2019-05-08 | Large-size limit vault height experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211061335U (en) |
-
2019
- 2019-05-08 CN CN201920658206.1U patent/CN211061335U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100444982C (en) | Differential temperature drawing mould of magnesium alloy plate | |
| CN109248955B (en) | Punching and reaming integrated device and method for metal sheet | |
| US11260444B2 (en) | Forming device and method for large thin-walled part with curved surface | |
| CN109719246B (en) | Forging compound die for punching inclined window hole | |
| CN109332488B (en) | Electric field assisted reverse deep drawing forming die for high-strength cap-shaped part | |
| CN1642671A (en) | Method and apparatus for making a can lid shell | |
| CN112916783A (en) | Plate forging forming die device with local hole thickening characteristic and technological method | |
| CN105149443A (en) | Rigid blank holder deep drawing die for thin-walled hemispheric high-pressure membrane with flange | |
| CN211061335U (en) | Large-size limit vault height experimental device | |
| CN104985061B (en) | Full-automatic index dial squeeze riveter | |
| CN101614628B (en) | Stretched punching hole expansion composite die used for detecting plate hole expansion performance | |
| CN105057815A (en) | Tapping station | |
| CN206104691U (en) | Center cellular type direction connecting piece stamping die | |
| CN110640018B (en) | Multi-physical-field composite effect micro-forming device and method | |
| CN109201839B (en) | Plate viscous medium bulging machine | |
| CN112045052B (en) | Die structure for plate drawing and bulging performance experiment | |
| CN204954081U (en) | Attack tooth station | |
| CN107866475A (en) | A kind of upset forming experiment device that presses | |
| CN110057693A (en) | A kind of aluminium alloys for automobile slab forming property testing equipment and method | |
| CN201132187Y (en) | Heavy load curling die | |
| CN203343272U (en) | Multifunctional compound blanking and punching die | |
| CN212191074U (en) | 30MN pre-die forging press | |
| CN115488258B (en) | One-step forming device for large thin-wall end socket and machining process thereof | |
| CN217192043U (en) | Stamping jacking clamp capable of being accurately positioned | |
| CN216656082U (en) | Steel pipe local diameter shrinkage die with qualified mark of size |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |