CN103691796A - Large internal high-pressure forming die - Google Patents
Large internal high-pressure forming die Download PDFInfo
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- CN103691796A CN103691796A CN201310752092.4A CN201310752092A CN103691796A CN 103691796 A CN103691796 A CN 103691796A CN 201310752092 A CN201310752092 A CN 201310752092A CN 103691796 A CN103691796 A CN 103691796A
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Abstract
The invention discloses a large internal high-pressure forming die which comprises an upper die, a lower die, two sealing punches, two side pushing cylinders, a water incoming pipe and a water outgoing pipe. A cavity of parts is formed after the upper die and the lower die are assembled, the sealing punches are mounted on the side pushing cylinders respectively and driven by the side pushing cylinders to enter a pipe blank to complete end portion sealing, the water incoming pipe is arranged in the lower die, and the water outgoing pipe is arranged in the upper die. The water incoming pipe is arranged in the lower die, so that quick liquid filling can be realized by adopting a high-capacity pump through the water incoming pipe positioned in the lower die. Quick liquid filling cannot be realized even if the high-capacity pump is adopted when an existing die structure is adopted. Quick liquid filling and air discharging can be realized by adopting a large-diameter hose and using the high-capacity pump, so that production efficiency is improved. High-pressure water enters the inside of a pipe through an internal pressure hole in the middle of a sealing head to be isolated from a low-pressure water passage, and size of a high-pressure water passage is reduced, so that high-pressure dynamic sealing effect and control accuracy are improved.
Description
Technical field
The invention belongs to machinery manufacturing technology field, particularly a kind of large-scale internal high pressure forming mould.
Background technology
Tube Hydroforming (claiming again internal high pressure forming) is a kind of advanced manufacturing technology of manufacturing hollow integral member, compare and there is obvious advantage with the hollow unit manufacturing process of welding after traditional first punching press, when reducing costs, can improve the strength and stiffness of part.Germany Schuler company basis is to applying the statistical analysis of hydroforming part, and the production cost of hydroforming part on average reduces by 15%～20% than stamping parts, and die cost reduces by 20%～30%.Therefore at automobile, Aeronautics and Astronautics, manufacture field, obtained application more widely.Especially in automobile production, as the subframe of car and dashboard cross member etc., all with internal high pressure hydraulic manufacturing process, substituting original traditional diamond-making technique gradually.At present, many famous motor corporations have generally adopted this technology in the world, according to the investigation result of the american steel research institute automobile application committee, in the typical car of manufacturing in North America, hollow light body part 10% rose to 16% in the ratio of car total amount from 15 years, the ratio that new model punching press butt welding piece is substituted by internal high pressure forming part has surpassed 50%, all up to a hundred of the inner high voltage production lines of Europe and North America, and the quantity of internal high pressure forming part is all over 5,000 ten thousand every year.The nucleus equipment of internal high pressure forming is internal high pressure forming mould, its reflection reasonability of forming technology quality of final decision drip molding.
Internal high pressure forming production process generally will be passed through several steps: put into pipe fitting, and---------end sealing---internal pressurization shaping---takes out the operations such as part to matched moulds in topping up exhaust.Existing mould structure: water under high pressure from the high-pressure side of booster out, the passage that all passes through sealing punch inside with low-pressure water directly enters pipe, then internal pressurization is shaped.This just produces two problems, the one, the low pressure pipeline of topping up exhaust communicates with pressure piping, because common car forming pressure generally can reach 200-300MPa, the compression ratio of water under high pressure can reach more than 10%, this has just increased the volume that needs the liquid of compression, in the cycle that has extended pressurization, need larger booster volume just can meet the demands simultaneously; The 2nd, sealing punch is owing to limit by tube blank size, simultaneously in order to reduce the volume of booster, its inner channel diameter is unsuitable excessive, this just causes when carrying out topping up exhaust, be subject to the impact of channel diameter, to thering is the part of larger volume, be difficult to realize quick topping up exhaust, extended the time of topping up exhaust, thereby greatly reduced production efficiency.
Summary of the invention
The problems referred to above that exist for solving prior art, the present invention will design a kind of large-scale internal high pressure forming mould that can shorten pressing period and topping up evacuation time and can enhance productivity.
To achieve these goals, technical scheme of the present invention is as follows: a kind of large-scale internal high pressure forming mould, comprise upper die and lower die, 2 sealing punch, 2 thruster cylinders, water inlet pipe and outlet pipes, after described upper die and lower die matched moulds, form the die cavity of part, 2 sealing punch are arranged on respectively on 2 thruster cylinders, by the drive of thruster cylinder, enter pipe and complete end part seal, water inlet pipe is arranged in counterdie, and outlet pipe is arranged in patrix.
The caliber of water inlet pipe of the present invention is 1.1-1.4 times of pipe diameter, and the 0.8-0.9 that the caliber of outlet pipe is pipe diameter doubly; Between described sealing punch and booster high-pressure side, by high-pressure water pipe, be connected, described high-pressure water pipe diameter determines according to tubing internal volume, volume of part variation, operating pressure and curring time, and high-pressure water pipe diameter is 5-12mm.
Compared with prior art, the present invention has following beneficial effect:
1,, because the present invention is arranged on water inlet pipe in counterdie, therefore can adopt high-capacity pump to carry out quick topping up by being positioned at the water inlet pipe of counterdie.And adopt existing mold structure, even if adopt high-capacity pump also not realize quick topping up.Because the present invention can adopt large diameter flexible pipe and use high-capacity pump to realize quick topping up exhaust, thereby has improved production efficiency.
2, water under high pressure of the present invention enters tubing inside by the interior pressure hole in the middle of seal head, isolated with low-pressure water passage, reduce water under high pressure channel volume, thereby reduce water under high pressure compression amount and reduce booster volume, strengthen high pressure dynamic sealing effect and control accuracy, also shortened the required time of pressurizeing, thereby can significantly improve production efficiency, reduced costs simultaneously.
Accompanying drawing explanation
2, the total accompanying drawing of the present invention, wherein:
Fig. 1 is shaping dies schematic diagram of the present invention.
Fig. 2 is the A-A view of Fig. 1.
In figure: 1-patrix; 2-counterdie; 3-tubing; 4-sealing punch; 5-thruster cylinder; 6-water inlet pipe; 7-outlet pipe.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further.As shown in Figure 1-2, a kind of large-scale internal high pressure forming mould, comprise patrix 1,2,2 sealing punch of counterdie 4,2 thruster cylinders 5, water inlet pipe 6 and outlet pipes 7, after described patrix 1 and counterdie 2 matched moulds, form the die cavity of part, 2 sealing punch 4 are arranged on respectively on 2 thruster cylinders 5, by 5 drives of thruster cylinder, enter pipe and complete end part seal, water inlet pipe 6 is arranged in counterdie 2, and outlet pipe 7 is arranged in patrix 1.
The caliber of water inlet pipe 6 of the present invention is 1.1-1.4 times of tubing 3 diameters, and the caliber of outlet pipe 7 is 0.8-0.9 times of tubing 3 diameters; Between described sealing punch 4 and booster high-pressure side, by high-pressure water pipe, be connected, described high-pressure water pipe diameter determines according to tubing 3 internal volumes, volume of part variation, operating pressure and curring time, and high-pressure water pipe diameter is 5-12mm.
The course of work of the present invention is as follows:
Patrix 1 is driven with counterdie 2 and is carried out matched moulds by clamping pressure machine slide block, thruster cylinder 5 drives seal head to advance to certain position, form airtight die cavity with patrix 1 and counterdie 2, now, the low-pressure water that high-capacity pump produces is carried out quick topping up exhaust by being positioned at the water inlet pipe 6 of counterdie 2, air is discharged by the outlet pipe 7 that is positioned at patrix 1, then, sealing punch 4 moves on mechanical seal is carried out in tubing 3 ends, block low pressure water inlet pipe 6 and outlet pipe 7 simultaneously, the water under high pressure that booster produces the subsequently pressure hole by sealing punch 4 inside enters tubing 3 inside and forms, internal high pressure forming part external shape is determined by mold cavity, subsequently, thruster cylinder 5 drives sealing punch 4 backhaul releases, carry out die sinking pickup.
Adopt the present invention to form certain secondary car frame, tubing material is low carbon steel pipe, diameter is 60mm, thickness is 2.5mm, length 2550mm, low carbon steel pipe yield limit 440MPa, strength degree 530MPa, subframe minimum diameter 20mm, forming pressure is 38.2MPa, school shape pressure is 67.8MPa.Low pressure water inlet pipe diameter is 72mm, and diameter of outflow tube is 48mm, and water under high pressure bore dia is 8mm.
Low-pressure water of the present invention and water under high pressure passage are isolated mutually, water inlet pipe diameter is 1.2 times of pipe diameter, the caliber of outlet pipe is 0.8 of pipe diameter, water inlet pipe, tubing and diameter of outflow tube reduce to form closed loop channel system successively, eliminating is clean rapidly to guarantee mold cavity inner air, prevents bubble.
Claims (2)
1. one kind large-scale internal high pressure forming mould, comprise patrix (1), counterdie (2), 2 sealing punch (4), 2 thruster cylinders (5), water inlet pipe (6) and outlet pipe (7), after described patrix (1) and counterdie (2) matched moulds, form the die cavity of part, 2 sealing punch (4) are arranged on respectively on 2 thruster cylinders (5), by thruster cylinder (5) drive, enter pipe and complete end part seal, it is characterized in that: water inlet pipe (6) is arranged in counterdie (2), and outlet pipe (7) is arranged in patrix (1).
2. a kind of large-scale internal high pressure forming mould according to claim 1, is characterized in that: the caliber of described water inlet pipe (6) is 1.1-1.4 times of tubing (3) diameter, and the caliber of outlet pipe (7) is 0.8-0.9 times of tubing (3) diameter; Between described sealing punch (4) and booster high-pressure side, by high-pressure water pipe, be connected, described high-pressure water pipe diameter determines according to tubing (3) internal volume, volume of part variation, operating pressure and curring time, and high-pressure water pipe diameter is 5-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752092.4A CN103691796A (en) | 2013-12-31 | 2013-12-31 | Large internal high-pressure forming die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752092.4A CN103691796A (en) | 2013-12-31 | 2013-12-31 | Large internal high-pressure forming die |
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| CN103691796A true CN103691796A (en) | 2014-04-02 |
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| CN201310752092.4A Pending CN103691796A (en) | 2013-12-31 | 2013-12-31 | Large internal high-pressure forming die |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949523A (en) * | 2014-04-16 | 2014-07-30 | 宁波钜智自动化装备有限公司 | Hydro forming equipment for complex pipe fitting, and application method of equipment |
| CN104438540A (en) * | 2014-11-26 | 2015-03-25 | 西安交通大学 | Low-pressure internal high pressure forming device for torsion beam |
| CN106881394A (en) * | 2017-04-17 | 2017-06-23 | 无锡朗贤汽车组件研发中心有限公司 | A kind of fittings hydraulic formation technique and Forming Equipments reduced based on volume |
| CN107052126A (en) * | 2017-04-17 | 2017-08-18 | 无锡朗贤汽车组件研发中心有限公司 | Fittings hydraulic formation equipment |
| CN113319185A (en) * | 2021-06-08 | 2021-08-31 | 哈尔滨工业大学 | Fluid pressure forming device and method for large-diameter thin-wall cylindrical part |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19628688C1 (en) * | 1996-07-17 | 1997-11-20 | Siempelkamp Pressen Sys Gmbh | Press for internal high pressure forming hollow blanks |
| US6261392B1 (en) * | 1997-05-30 | 2001-07-17 | Accra Teknik Ab | Method for manufacturing quenched thin-walled metal hollow casing by blow-moulding |
| DE10127948C1 (en) * | 2001-06-08 | 2002-08-29 | Thyssen Krupp Automotive Ag | Process for hydroforming and lockable tool for carrying out the process |
| US20040255629A1 (en) * | 2003-04-09 | 2004-12-23 | Sapa Profiler Ab | Method for forming of tubular work-pieces using a segmented tool |
| US20070209418A1 (en) * | 2003-12-09 | 2007-09-13 | Joerg Koelln | Method for Internal High-Pressure Deformation of a Blank |
| CN103272879A (en) * | 2013-05-28 | 2013-09-04 | 浙江大学宁波理工学院 | Upset-bulge compound internal high pressure forming method and device for long and thin deformed straight pipe |
-
2013
- 2013-12-31 CN CN201310752092.4A patent/CN103691796A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19628688C1 (en) * | 1996-07-17 | 1997-11-20 | Siempelkamp Pressen Sys Gmbh | Press for internal high pressure forming hollow blanks |
| US6261392B1 (en) * | 1997-05-30 | 2001-07-17 | Accra Teknik Ab | Method for manufacturing quenched thin-walled metal hollow casing by blow-moulding |
| DE10127948C1 (en) * | 2001-06-08 | 2002-08-29 | Thyssen Krupp Automotive Ag | Process for hydroforming and lockable tool for carrying out the process |
| US20040255629A1 (en) * | 2003-04-09 | 2004-12-23 | Sapa Profiler Ab | Method for forming of tubular work-pieces using a segmented tool |
| US20070209418A1 (en) * | 2003-12-09 | 2007-09-13 | Joerg Koelln | Method for Internal High-Pressure Deformation of a Blank |
| CN103272879A (en) * | 2013-05-28 | 2013-09-04 | 浙江大学宁波理工学院 | Upset-bulge compound internal high pressure forming method and device for long and thin deformed straight pipe |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949523A (en) * | 2014-04-16 | 2014-07-30 | 宁波钜智自动化装备有限公司 | Hydro forming equipment for complex pipe fitting, and application method of equipment |
| CN103949523B (en) * | 2014-04-16 | 2016-03-16 | 宁波钜智自动化装备有限公司 | A kind of equipment for complex pipes internal high pressure forming and using method thereof |
| CN104438540A (en) * | 2014-11-26 | 2015-03-25 | 西安交通大学 | Low-pressure internal high pressure forming device for torsion beam |
| CN106881394A (en) * | 2017-04-17 | 2017-06-23 | 无锡朗贤汽车组件研发中心有限公司 | A kind of fittings hydraulic formation technique and Forming Equipments reduced based on volume |
| CN107052126A (en) * | 2017-04-17 | 2017-08-18 | 无锡朗贤汽车组件研发中心有限公司 | Fittings hydraulic formation equipment |
| CN113319185A (en) * | 2021-06-08 | 2021-08-31 | 哈尔滨工业大学 | Fluid pressure forming device and method for large-diameter thin-wall cylindrical part |
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Application publication date: 20140402 |