CN104492926B - A kind of reduction hot forming steel plate punching dull die structure - Google Patents
A kind of reduction hot forming steel plate punching dull die structure Download PDFInfo
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- CN104492926B CN104492926B CN201410800355.9A CN201410800355A CN104492926B CN 104492926 B CN104492926 B CN 104492926B CN 201410800355 A CN201410800355 A CN 201410800355A CN 104492926 B CN104492926 B CN 104492926B
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- Prior art keywords
- hole
- upper mold
- holding pad
- drift
- lubrication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The present invention relates to a kind of reduction hot forming steel plate punching dull die structure, including upper die and lower die seat, upper mold arranges holding pad and upper mold drift；It is characterized in that: arrange stepped hole on described holding pad, stepped hole is formed by connecting by the first through hole and the second through hole, and the diameter of the first through hole is less than the diameter of the second through hole, and the first through hole is positioned at the second through hole bottom；Described upper mold drift passes stepped hole, upper mold drift and the first via clearance and coordinates；The first through-hole inner surface at described holding pad arranges female thread；Reserving mounting groove in the installation bottom surface of described holding pad upper end, install oil circuit assembly contiguous block in mounting groove, oil circuit assembly contiguous block connects lubrication branch road and main line, and main line is connected with lubrication source through upper mold；Described lubrication branch road one end is connected with oil circuit assembly contiguous block, and the lubrication branch road other end is connected to the second through hole of stepped hole.The present invention is not increasing on the premise of extra cost do not loses production efficiency, effectively lubricating drift.
Description
Technical field
The present invention relates to a kind of hot forming steel plate punching dull die structure that reduces, a kind of for the high intensity after hot forming processes and the mould being punched out of ultrahigh-strength steel plates, belonging to the separation technology field of hot forming steel plate.
Background technology
High-strength steel sheet intensity is high, particularly there is higher comprehensive mechanical property in normalizing or normalizing tempered condition, the application of high-strength steel sheet is the effective means simultaneously guaranteeing lightweight and crashworthiness, is therefore widely used in the construction industry fields such as large ship, bridge, power station equipment, middle high-pressure boiler, high-pressure bottle, rolling stock, hoisting machinery.And hot forming steel plate is as a kind of Newly Sprouted Things, its production technology is different from common high-strength steel sheet, the production technology of hot forming steel plate generally includes shaping and quenching two stages of cooling, wherein, shaping stage needs at high temperature the most stamping by mould, quenching cooling stage needs to be cooled down rapidly by the certain rate of cooling of control, so that steel plate occurs from austenite microstructure to the transformation of martensite microstructure, thus obtain high intensity and hardness, as a example by common boron steel, after hot forming processes, its intensity reaches about 1500Mpa.The tensile strength of general high-strength steel sheet is at about 400MPa～450MPa, and tensile strength has reached 500 MPa～800MPa the most before hot forming heat steel, then can improve after thermoforming to 1300～1600 MPa, its intensity is 3～4 times of rolled products of ordinary high-strength steel, its hardness is only second to pottery, but there is the toughness of steel, as a example by common hot forming boron steel steel plate, intensity reaches 1500MPa, elongation percentage is about 5%, considerably beyond the high-strength steel of general significance, its separating technology difficulty is significantly larger than general steel plate and common high-strength steel steel plate.
For the punching technology of hot forming steel plate, owing to the intensity of steel plate own and hardness are the highest, drift abrasion is very serious, finally produces punching burr, affects workpiece quality.To this end, conventional method is to use the sintered steel of high rigidity, even increasing the process for treating surface such as TD, PVD coating on the basis of sintered steel, the cost of cutting edge thus becomes much more expensive.
The lubricating condition of drift time another solution is to improve punching, common method is through oiling technique after part hot forming, allows piece surface cover lubricating oil or lubricating fluid.But in batch production process: (1) increases by a sequence oiling technique, adds production cost；(2) consider from the safety inventory produced, being often required to standby storehouse, even if ensure that the logistics principle of first in first out, the most usually occurring producing interval time long, cover the lubricating oil on workpiece/lubricating fluid volatilization, water clock, cause entirety or certain regional area lack of lubrication even without lubrication.
If it is possible to invention one lubrication operation, both workpiece can be lubricated, the most not increase production process, moreover it is possible to ensure the uniform, stable of lubrication, the lifting of hot forming punching technology quality and cost will be had the biggest using value.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of reduce hot forming steel plate punching dull die structure, do not increasing on the premise of extra cost do not loses production efficiency, effectively lubricating drift.
The technical scheme provided according to the present invention, described reduction hot forming steel plate punching dull die structure, including upper die and lower die seat, upper mold arranges holding pad and upper mold drift, arrange lower mold punching die case, upper mold drift and lower mold punching die case on die shoe to match；It is characterized in that: arrange stepped hole on described holding pad, stepped hole is formed by connecting with second through hole with Second bobbin diameter by first through hole with the first diameter, and the first diameter is less than Second bobbin diameter, and the first through hole is positioned at the second through hole bottom；Described upper mold drift passes stepped hole, upper mold drift and the first via clearance and coordinates；The first through-hole inner surface at described holding pad arranges female thread, the preferred coarse thread of female thread；Reserving mounting groove in the installation bottom surface of described holding pad upper end, install oil circuit assembly contiguous block in mounting groove, oil circuit assembly contiguous block connects lubrication branch road and main line, and main line is connected with lubrication source through upper mold；Described lubrication branch road one end is connected with oil circuit assembly contiguous block, and the lubrication branch road other end is connected to the second through hole of stepped hole.
Further, the distance between described upper mold drift and the first through hole is 0.2～0.8mm.
Further, the width of described mounting groove is 3～35mm, and the degree of depth is 3～35mm.
Further, described main line arranges flow control valve.
After the present invention has following technical effect that (1) present invention can omit hot forming, the oiling technique before punching；(2) oil groove is arranged on holding pad by the present invention, owing to holding pad is relatively independent, has designed rear concentrated processing, and manufacturing process is simpler effectively；(3) oil groove is arranged on holding pad by the present invention, and owing to holding pad is usually foundry goods or Fine Steel Casting iron, hardness is far below cutting edge insert (calculating with HRC, usual difference of hardness is not less than 20 degree), and processing is more efficiently, conveniently；(4) present invention needs to regulate the lubrication amount of each punching press, steady quality according to drift lubrication.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the I enlarged drawing of Fig. 2.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As shown in FIG. 1 to 3: described reduction hot forming steel plate punching dull die structure includes upper mold 1, holding pad 2, upper mold drift 3, lower mold punching die case 4, die shoe 5, stepped hole 6, lubrication branch road 7, main line 8, lubrication source 9, flow control valve 10, oil circuit assembly contiguous block 11, female thread 12 etc..
As shown in Figure 1 and Figure 2, the present invention includes upper mold 1 and die shoe 5, and upper mold 1 arranges holding pad 2 and upper mold drift 3, die shoe 5 arranges lower mold punching die case 4, upper mold drift 3 and lower mold punching die case 4 and matches；Arranging stepped hole 6 on described holding pad 2, stepped hole 6 is formed by connecting with second through hole with Second bobbin diameter by first through hole with the first diameter, and the first diameter is less than Second bobbin diameter, and the first through hole is positioned at the second through hole bottom；Described upper mold drift 3 is through stepped hole 6, and upper mold drift 3 coordinates with the first via clearance, and the distance between upper mold drift 3 and the first through hole is 0.2～0.8mm；The first through-hole inner surface at described holding pad 2 arranges female thread 12, the preferred coarse thread of female thread；
Mounting groove is reserved in the installation bottom surface of described holding pad 2 upper end, oil circuit assembly contiguous block 11 is installed in mounting groove, oil circuit assembly contiguous block 11 connects lubrication branch road 7 and main line 8, main line 8 is connected with lubrication source 9 through upper mold 1, lubrication branch road 7 one end is connected with oil circuit assembly contiguous block 11, and lubrication branch road 7 other end is connected to the second through hole of stepped hole 6；The width of described mounting groove is 3～35mm, and the degree of depth is 3～35mm；
Described main line 8 arranges flow control valve 10.
The operation principle of the present invention: before Sheng Chaning, main line 8 is connected with lubrication source 9, lubricating oil/lubricating fluid passes through main line 8, it is delivered to lubricate the outlet of branch road 7, the most each holding pad 2 is topped bar the second through hole top in hole 6, flowed in the first through hole by the second through hole again, control flow by flow control valve 10；Under gravity, lubricating oil/lubricating fluid is covered with the contour line of binder plate hole along the threaded interior walls of the second through hole, thus completes the lubrication to punching；Every time after punching press, workpiece, lower mold die case take away parts of lubricating oil/lubricating fluid, lubrication source sustainable supply lubricating oil/lubricating fluid, thus reach lubrication output and the balance consumed.
Embodiment: the punching technology of boron steel steel plate, this workpiece is automobile B post.The material of steel plate: boron steel 22MnB5, the thick 1.2mm of material, length 1250mm, wide 430mm, required punching D16mm；
Above-mentioned workpiece carries out concrete processed by following steps:
The first step, carries out hot forming processing to workpiece, obtains workpiece B post after hot forming；
Second step, according to the final aperture size of workpiece, is punched out processing to workpiece.This perforating die is made up of upper mold 1, holding pad 2, upper mold drift 3, lower mold punching die case 4 and die shoe 5, and holding pad 2 is configured with the through hole with coarse thread, and the end of the lubrication arm being connected to lubrication source is connected with screwed hole top.
Being connected with lubrication source by main line before Sheng Chaning, lubricating oil/lubricating fluid passes through main line, is delivered to lubricate the outlet of branch road, namely on the stepped hole of holding pad；Control flow by flow control valve, and under gravity, be finally covered with the contour line of binder punching, thus complete the lubrication to punching；Every time after punching press, workpiece, lower mold die case take away parts of lubricating oil/lubricating fluid, lubrication source sustainable supply lubricating oil/lubricating fluid, thus reach lubrication output and the balance consumed.
Claims (1)
1. one kind reduces hot forming steel plate punching dull die structure, including upper mold (1) and die shoe (5), holding pad (2) and upper mold drift (3) are set in upper mold (1), arrange lower mold punching die case (4), upper mold drift (3) and lower mold punching die case (4) on die shoe (5) to match；It is characterized in that: arrange stepped hole (6) on described holding pad (2), stepped hole (6) is formed by connecting with second through hole with Second bobbin diameter by first through hole with the first diameter, and the first diameter is less than Second bobbin diameter, and the first through hole is positioned at the second through hole bottom；Described upper mold drift (3) passes stepped hole (6), and upper mold drift (3) coordinates with the first via clearance；The first through-hole inner surface at described holding pad (2) arranges female thread；Mounting groove is reserved in the installation bottom surface of described holding pad (2) upper end, oil circuit assembly contiguous block (11) is installed in mounting groove, oil circuit assembly contiguous block (11) connects lubrication branch road (7) and main line (8), and main line (8) is connected with lubrication source (9) through upper mold (1)；Described lubrication branch road (7) one end is connected with oil circuit assembly contiguous block (11), and lubrication branch road (7) other end is connected to the second through hole of stepped hole (6)；
Distance between described upper mold drift (3) and the first through hole is 0.2～0.8mm；
The width of described mounting groove is 3～35mm, and the degree of depth is 3～35mm；
Described main line (8) arranges flow control valve (10)；
Described female thread uses coarse thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800355.9A CN104492926B (en) | 2014-12-20 | 2014-12-20 | A kind of reduction hot forming steel plate punching dull die structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800355.9A CN104492926B (en) | 2014-12-20 | 2014-12-20 | A kind of reduction hot forming steel plate punching dull die structure |
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| Publication Number | Publication Date |
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| CN104492926A CN104492926A (en) | 2015-04-08 |
| CN104492926B true CN104492926B (en) | 2016-08-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080053185A1 (en) * | 2006-08-30 | 2008-03-06 | Cardiac Pacemakers Inc. | System and method for die cutting manifold including a lubrication channel |
| CN101380654B (en) * | 2008-10-14 | 2010-12-29 | 沈阳理工大学 | Deep drawing method of magnesium alloy tailor welded blanks |
| CN202123160U (en) * | 2011-06-28 | 2012-01-25 | 昆山荣腾模具部品制造有限公司 | Lubricating structure for male dies of high-speed progressive dies |
| CN204338679U (en) * | 2014-12-20 | 2015-05-20 | 无锡朗贤汽车组件研发中心有限公司 | A kind of reduction hot forming steel plate punching dull die structure |
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Address after: 214115 Hongda Road, Wuxi City, Jiangsu Province, No. 111 Patentee after: Wuxi Lang Xian lightweight Polytron Technologies Inc Address before: 214115 Hongda Road, Wuxi City, Jiangsu Province, No. 111 Patentee before: Wuxi Co., Ltd of Lang Xian motor vehicle assembly research and development centre |
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Denomination of invention: Mold structure for decreasing punching abrasion of steel plate hot formed Effective date of registration: 20190409 Granted publication date: 20160831 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Lang Xian lightweight Polytron Technologies Inc Registration number: 2019990000303 |