CN106862361A - A kind of oversize becomes lightweight internal high pressure forming technique - Google Patents
A kind of oversize becomes lightweight internal high pressure forming technique Download PDFInfo
- Publication number
- CN106862361A CN106862361A CN201710186174.5A CN201710186174A CN106862361A CN 106862361 A CN106862361 A CN 106862361A CN 201710186174 A CN201710186174 A CN 201710186174A CN 106862361 A CN106862361 A CN 106862361A
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- Prior art keywords
- pipe fitting
- pipe
- high pressure
- pressure forming
- forming technique
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- 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.)
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Classifications
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/045—Closing or sealing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
Become lightweight internal high pressure forming technique the invention discloses a kind of oversize, it is to be welded together after many pipe fittings of different tube diameters are carried out into port processing, during port processes, multiple tubing element has carried out undergauge or expanding operation, compared with internal high pressure forming technique, undergauge or expanding footpath variable are significantly larger than internal high pressure forming technique, then carrying out welding to these pipe fittings makes it link into an integrated entity, formed after the pipe fitting after welding is placed into inner high voltage mould again, thus the footpath variable of internal high pressure forming technique pipe fitting is substantially increased, also improve stock utilization simultaneously.
Description
Technical field
Become lightweight internal high pressure forming technique the present invention relates to a kind of oversize, entered by by the pipe fitting of many different tube diameters
Weld together after the processing of row port, during port processes, multiple tubing element has carried out undergauge or expanding operation, with interior height
Pressing formation technique is compared, and undergauge or expanding footpath variable are significantly larger than internal high pressure forming technique, and then these pipe fittings are welded
Connecing makes it link into an integrated entity, then forms after the pipe fitting after welding is placed into inner high voltage mould, thus substantially increase in
The footpath variable of high-pressure forming technique pipe fitting, while also improving stock utilization.
Background technology
In the production process of auto parts and components, the processing for shape tube often uses internal high pressure forming technique,
It is special in the Chinese invention of Patent No. 201310331382.1 that internal high pressure forming technique of the prior art may be referred to applicant
Profit neutralizes the internal high pressure forming equipment and specific shaping disclosed in the Chinese invention patent of Patent No. 201610103783.5
Technique.
But in existing internal high pressure forming technique, there is a problem that pipe fitting footpath variable is unsuitable excessive, this is due to pipe fitting
Deformation quantity be by limiting value, when pipe fitting regional area deformation quantity exceed the limiting value when, pipe fitting can be caused to rupture,
Internal liquid flows out, and pressure leaks so that shaping failure.Therefore want to manufacture the workpiece of big footpath variable, usually first in stamping machine
On carry out preform punching press, the pipe fitting after punching press is placed into internal high pressure forming equipment again then and is processed, but it is this
Mode one side complex steps, the stamping forming forming quality of another aspect will be far below internal high pressure forming.
This is directed to, Harbin Institute of Technology discloses in the Chinese invention patent of Patent No. 201610825458.x
A kind of big section difference odd-shaped cross section pipe fitting swelling pressure combined shaping method, it is related to a kind of big section difference odd-shaped cross section tubular member
Manufacturing process, the method has main steps that：Step one, determine some cross sections on big section difference odd-shaped cross section pipe fitting to be formed
Girth and equivalent diameter, determine the structure of swelling pressure composite forming die and the interior cavity dimension of lateral compression mould and initial bit
Put；The equal diameter circular section pipe of step 2, interception with certain length, puts into swelling pressure composite forming die；Step 3,
By pressure medium inlet to the pressure medium with certain pressure is filled with inside the pipe of equal diameter circular section, bulging is straightened
Footpath circular section pipe；Step 4, the lateral extrusion die of driving are extruded variable diameters circular section pipe, obtain heavy in section difference
Tee section pipe fitting；Step 5, removal pressure, the pipe fitting for having shaped is taken out after opening swelling pressure composite forming die.
But, the workpiece reducing technique in above-mentioned patent needs to open up pressure medium inlet on the outer wall of pipe fitting in advance,
Pipe fitting is extruded by lateral compression mould again after pressure medium is injected, this aspect on pipe fitting outer wall due to opening up
Entrance, can cause the tube wall of pipe fitting entrance can be brittle, on the other hand also need to peripheral hardware extrusion die, cause the increasing of cost
Plus.
In addition, also disclosing that a kind of inner high voltage formed pipe in the Chinese invention patent of Patent No. 201610190025.1
The reducing preforming process of part, pipe with caliber as d0 is processing base material, maximum caliber d1s and most of the d0 between finished product pipe fitting
Between pipe with small pipe diameter d2, according to finished product requirement, carry out tube reducing respectively to the corresponding site of pipe or expanding operation make to reach it is corresponding
Caliber, the tube reducing be using mould extruding by the way of complete, it is described it is expanding be to be completed by the way of mould inner high voltage is expanding.
The another preforming tube reducing equipment of reducing for providing inner high voltage moulding pipe of the invention, including pedestal, are arranged on the clamping machine on pedestal
Structure, is provided with tube reducing mould for the local tube reducing to pipe on the clamping device.The present invention is with caliber between target maximum
The pipe of caliber and minimum pipe is processing base material, can reduce the expanding difficulty of inner high voltage, improves yield rate.
But, the reducing preforming process of the inner high voltage moulding pipe disclosed in above-mentioned patent is by the mould of peripheral hardware
To carrying out expanding or undergauge in the middle part of pipe, on the premise of ensureing that pipe fitting do not rupture, the amplitude of its expanding and undergauge its
It is real also fairly limited, and being discussed in detail in embodiment, the tube reducing operation of the patent is essentially by tube reducing mould
Tool is extruded firmly by four circumferential centers, and traditional punch forming does not have substantive difference yet, and final forming quality is not high.
To sum up shown, reducing technique of the prior art is required for peripheral hardware mould and instrument, and forming technology is complicated, and it
Pipe fitting near expanding position it is equal, by material, elongation percentage is limited same caliber pipe fitting in itself, and caliber change is limited cannot
Meet bigger footpath and become requirement.
The content of the invention
The technical problems to be solved by the invention are directed to the above-mentioned state of the art and providing one kind can not increase cost
On the premise of quickness and high efficiency ground change footpath variable oversize become lightweight internal high pressure forming technique.
To achieve the above object, the invention provides following technical scheme：
A kind of oversize becomes lightweight internal high pressure forming technique, includes following steps：
First, the different pipe fitting of two calibers is chosen, wherein a port diameter for pipe fitting is d1, another port diameter of pipe fitting
It is d2, in an initial condition, d2>d1；
2nd, undergauge or expanding processing are carried out to two ports of pipe fitting so that two port diameter d2=d1 of pipe fitting；
3rd, two pipe fittings are placed into friction welding apparatus, and cause that the port of two pipe fittings is just right；
4th, friction welding apparatus are started so that the end of two pipe fittings is welded together by way of friction welding (FW)；
5th, by welding after two pipe fittings be placed into inner high voltage mould, and be fixed in die cavity by fixture；
6th, inner high voltage mould is carried out into die closing operation；
7th, start the hydraulic cylinder of inner high voltage both mold ends, sealed up the two ends for welding rear tubular member by Driven by Hydraulic Cylinder plug；
8th, start booster pump, pressurizeed to the internal water flooding of pipe fitting, while drive plug to continue to be fed in die cavity, including pipe fitting
Outwards expanded in the presence of portion's hydraulic pressure, until being fitted with the inwall of die cavity；
9th, divide mould, the pipe fitting after shaping is taken out.
As of the invention preferred, before step 5, step one to four can be repeated several times, by the pipe end of multiple tubing element
Weld together.
Used as improvement of the invention, in step 4, the friction welding apparatus include pedestal, are supported on the pedestal
Mounting seat and slide rail, be slidably connected slip base on slide rail, two different pipe fittings are separately fixed at described mounting seat
On slip base, and slip base can be drawn close or separate relative to the mounting seat.
As a further improvement on the present invention, drive mechanism is set in mounting seat, drives pipe fitting to exist by drive mechanism
Quick rotation in mounting seat.
As concrete technical scheme of the invention, the pipe end of two pipe fittings can be carried out between step 3 and step 4
Polish processing.
Compared with prior art, the advantage of the invention is that：Due to being to carry out expanding or undergauge in the end of pipe fitting, just not
Need to carry out expanding or undergauge instrument, mould by other special portions in the tube again, it is only necessary to traditional pipe-expanding machine,
Carried out in necking machine, and for the expanding of pipe end, undergauge due to plug can be inserted in pipe end so that its reducing amplitude
Significantly larger than section carries out expanding, undergauge in the tube, and the pipe end of two pipe fittings is welded together using friction welding technological in addition,
So that both can realize being seamlessly connected, compared to the mode that traditional solder is welded, sealing is stronger, and toughness is also stronger.
Brief description of the drawings
Fig. 1 is the structural representation of friction welding apparatus in the embodiment of the present invention；
Fig. 2 is the structural representation of inner high voltage mould in the embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As depicted in figs. 1 and 2, the present embodiment is that a kind of oversize becomes lightweight internal high pressure forming technique, includes following step
Suddenly：
First, the different pipe fitting of two calibers is chosen, each pipe fitting is respectively provided with two ports, sets wherein one one end of pipe fitting
Port diameter is d1, and another one end port diameter of pipe fitting is d2, and in an initial condition, d2>D1, referred herein is first
Beginning state, refers to that two ports of pipe fitting did not all carry out expanding or undergauge processing, the state in original port diameter.
2nd, undergauge or expanding processing are carried out to two above-mentioned ports of pipe fitting so that two port diameters of pipe fitting
d2=d1；Specifically, the port of an independent pipe fitting can be carried out by expanding or undergauge according to actual demand, it is also possible to
Carry out undergauge to the wherein root port of two pipe fittings simultaneously, the port of another carries out expanding so that two ports of pipe fitting
Diameter reaches unanimously after processing.Carry out expanding or undergauge to the port of pipe fitting is carried out in pipe-expanding machine or necking machine, is expanded
Mouth machine and necking machine are common equipment of the prior art.
3rd, two pipe fittings are placed into friction welding apparatus, and cause that the port of two pipe fittings is just right；Here it is specific to introduce
Lower friction welding apparatus, the friction welding apparatus of the present embodiment include pedestal 1, mounting seat 2 is carry on the top surface of pedestal and is slided
Rail 3, be slidably connected slip base 31 on slide rail, and two different pipe fittings are separately fixed at mounting seat and slip base（In sliding
The first fixture for fixing pipe fitting is provided with seat）On, and slip base can be in external drive motors or the work of hydraulic cylinder
The slip mutually drawn close relative to mounting seat or be separate is made on slide rail under.Drive mechanism, the drive are provided with mounting seat
Motivation structure can drive pipe fitting quick rotation in mounting seat.The drive mechanism includes magnet exciting coil 4 and drive magnet 5, tool
Body, the mounting hole for fixing pipe fitting has been opened up in mounting seat, drive magnet is fixed on the bottom hole of mounting hole, magnet exciting coil
It is fixed on the hole wall of mounting hole, and whole magnet exciting coil is the outer ring for being looped around drive magnet, and gap is formd between the two,
After magnet exciting coil is powered, it is possible to use electromagnetic induction drives drive magnet to rotate（Stator, working rotor similar to motor is former
Reason）, the front end of drive magnet is extended in outside mounting hole and fixed first fixture 6, the fixed foregoing pipe on the first fixture
Part, when magnet exciting coil drives drive magnet forward or reverse（It is capable of achieving by changing the sense of current）, the first folder can be driven
Tool quick rotation, and then drive pipe fitting to rotate.
4th, friction welding apparatus, the pipe fitting quick rotation in drive installation seat are started, while driving slip base towards mounting seat
Slide so that the port of two pipe fittings contacts with each other, because the pipe fitting in mounting seat is in quick rotation, therefore two pipe fittings are in contact
When can produce violent friction so that the port areas temperature of pipe fitting rises rapidly, so cause pipe fitting port areas soften,
The port of two pipe fittings is mutually glued, and subsequent slip base stops sliding, and the pipe fitting in mounting seat also stops operating, to two
Root pipe fitting carries out the cooling treatment of certain hour, specific cool time returns to normal temperature with the port temperature of two pipe fittings,
Now the port of two pipe fittings has linked into an integrated entity；
Then, if real work also needs to multiple tubing element and is connected, two other ends of pipe fitting are passed through into above-mentioned side respectively
Formula is connected with the port of other pipe fittings using friction welding (FW), if real work only needs to two pipe fittings and is connected, will welding
Pipe fitting afterwards is placed into inner high voltage mould；
5th, integrally welded pipe fitting is placed into inner high voltage mould 7, and die cavity is fixed in by the second fixture 71
In；
6th, inner high voltage mould is carried out into die closing operation；
7th, start the side hydraulic cylinder 8 of inner high voltage both mold ends, the two of rear tubular member will be welded by side hydraulic cylinder driving plug 9
End seals up；
8th, booster pump 10, booster pump are started（Booster pump, is standard component purchased in market as the term suggests being exactly the pump for being used for being pressurized）Even
Then external water source, is extracted water in external water source from booster pump and is pressurizeed to the internal water flooding of pipe fitting, at the same drive plug after
Continue and fed in die cavity, pipe fitting is internally outwards expanded in the presence of hydraulic pressure, until being fitted with the inwall of die cavity；Need exist for
It is bright, as shown in Fig. 2 inlet opening 91 is opened up on the part outside inner high voltage mould in plug, in the end of plug
Fluid hole 92 is opened up, the runner 93 for connecting inlet opening and fluid hole is set in the inside of plug, booster pump is connected by water pipe
Then inlet opening, can inject water into runner, then the inside of pipe fitting is injected into from fluid hole, when the inside of pipe fitting is hydraulically full
Afterwards, the hydraulic pressure of inside can be increased by continuing water filling so that the tube wall of pipe fitting outwards expands in the presence of hydraulic pressure, until
Fitted with the inwall of die cavity.The inwall of die cavity is designed to the size of required product, when tubular expansion is extremely fitted with mould intracavity wall
When, also it is achieved that the tubular requirement of required product.
9th, divide mould, that is, open inner high voltage mould, the pipe fitting after shaping is taken out.
Described on end, the advantage of above-mentioned technique is：Due to being to carry out expanding or undergauge in the end of pipe fitting, just no longer need
Expanding or undergauge instrument, mould are carried out by other special portions in the tube, it is only necessary in traditional pipe-expanding machine, necking
Carried out in machine, and for the expanding of pipe end, undergauge due to plug can be inserted in pipe end so that its reducing amplitude is remote
Expanding, undergauge is carried out more than section in the tube, the pipe end of two pipe fittings is welded together using friction welding technological in addition so that
Both can realize being seamlessly connected, and compared to the mode that traditional solder is welded, sealing is stronger, and toughness is also stronger.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of oversize becomes lightweight internal high pressure forming technique, includes following steps：
First, the different pipe fitting of two calibers is chosen, wherein a port diameter for pipe fitting is d1, another port diameter of pipe fitting
It is d2, in an initial condition, d2>d1；
2nd, undergauge or expanding processing are carried out to two ports of pipe fitting so that two port diameter d2=d1 of pipe fitting；
3rd, two pipe fittings are placed into friction welding apparatus, and cause that the port of two pipe fittings is just right；
4th, friction welding apparatus are started so that the end of two pipe fittings is welded together by way of friction welding (FW)；
5th, by welding after two pipe fittings be placed into inner high voltage mould, and be fixed in die cavity by fixture；
6th, inner high voltage mould is carried out into die closing operation；
7th, start the hydraulic cylinder of inner high voltage both mold ends, sealed up the two ends for welding rear tubular member by Driven by Hydraulic Cylinder plug；
8th, start booster pump, pressurizeed to the internal water flooding of pipe fitting, while drive plug to continue to be fed in die cavity, including pipe fitting
Outwards expanded in the presence of portion's hydraulic pressure, until being fitted with the inwall of die cavity；
9th, divide mould, the pipe fitting after shaping is taken out.
2. oversize according to claim 1 becomes lightweight internal high pressure forming technique, it is characterised in that：Before step 5,
Step one to four can be repeated several times, the pipe end of multiple tubing element is welded together.
3. oversize according to claim 1 becomes lightweight internal high pressure forming technique, it is characterised in that：In step 4, institute
State friction welding apparatus and include pedestal, mounting seat and slide rail are carry on the pedestal, being slidably connected on slide rail slides
Seat, two different pipe fittings are separately fixed in described mounting seat and slip base, and slip base can be relative to the installation
Seat against or separate.
4. oversize according to claim 3 becomes lightweight internal high pressure forming technique, it is characterised in that：Set in mounting seat
Drive mechanism, pipe fitting quick rotation in mounting seat is driven by drive mechanism.
5. oversize according to claim 1 becomes lightweight internal high pressure forming technique, it is characterised in that：In step 3 and step
Can two pipe ends of pipe fitting be carried out polishing processing between four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186174.5A CN106862361A (en) | 2017-03-27 | 2017-03-27 | A kind of oversize becomes lightweight internal high pressure forming technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186174.5A CN106862361A (en) | 2017-03-27 | 2017-03-27 | A kind of oversize becomes lightweight internal high pressure forming technique |
Publications (1)
| Publication Number | Publication Date |
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| CN106862361A true CN106862361A (en) | 2017-06-20 |
Family
ID=59173558
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710186174.5A Pending CN106862361A (en) | 2017-03-27 | 2017-03-27 | A kind of oversize becomes lightweight internal high pressure forming technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377733A (en) * | 2017-09-15 | 2017-11-24 | 湘潭大学 | Light-alloy pipe fitting inflatable thermal formation apparatus and forming method based on electromagnetic pulse |
| CN109017650A (en) * | 2018-07-24 | 2018-12-18 | 浙江摩多巴克斯科技股份有限公司 | A kind of T word arc collision prevention girders and its Hydroform process |
| CN112935717A (en) * | 2021-01-30 | 2021-06-11 | 浙江迪迈工贸有限公司 | Manufacturing process of vacuum cup with inner titanium and outer steel |
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| JPH09155478A (en) * | 1995-10-05 | 1997-06-17 | Kobe Steel Ltd | Method for joining hollow member and hollow structural member |
| JP2003236662A (en) * | 2002-02-19 | 2003-08-26 | Nissan Motor Co Ltd | Laminating plate material used for bulge forming base stock and method of welding the same |
| CN1644264A (en) * | 2005-01-21 | 2005-07-27 | 哈尔滨工业大学 | High-pressure forming method in tubular member for lowering forming pressure |
| CN102962308A (en) * | 2012-12-07 | 2013-03-13 | 哈尔滨工业大学 | Special internal high pressure shaping method for thin-wall welded shell |
-
2017
- 2017-03-27 CN CN201710186174.5A patent/CN106862361A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09155478A (en) * | 1995-10-05 | 1997-06-17 | Kobe Steel Ltd | Method for joining hollow member and hollow structural member |
| JP2003236662A (en) * | 2002-02-19 | 2003-08-26 | Nissan Motor Co Ltd | Laminating plate material used for bulge forming base stock and method of welding the same |
| CN1644264A (en) * | 2005-01-21 | 2005-07-27 | 哈尔滨工业大学 | High-pressure forming method in tubular member for lowering forming pressure |
| CN102962308A (en) * | 2012-12-07 | 2013-03-13 | 哈尔滨工业大学 | Special internal high pressure shaping method for thin-wall welded shell |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377733A (en) * | 2017-09-15 | 2017-11-24 | 湘潭大学 | Light-alloy pipe fitting inflatable thermal formation apparatus and forming method based on electromagnetic pulse |
| CN109017650A (en) * | 2018-07-24 | 2018-12-18 | 浙江摩多巴克斯科技股份有限公司 | A kind of T word arc collision prevention girders and its Hydroform process |
| CN112935717A (en) * | 2021-01-30 | 2021-06-11 | 浙江迪迈工贸有限公司 | Manufacturing process of vacuum cup with inner titanium and outer steel |
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Application publication date: 20170620 |