CN106311836B - Complex space moves towards Large Diameter Pipeline thin wall pipelines manufacturing process and device - Google Patents
Complex space moves towards Large Diameter Pipeline thin wall pipelines manufacturing process and device Download PDFInfo
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- CN106311836B CN106311836B CN201610797043.6A CN201610797043A CN106311836B CN 106311836 B CN106311836 B CN 106311836B CN 201610797043 A CN201610797043 A CN 201610797043A CN 106311836 B CN106311836 B CN 106311836B
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- conduit
- bending
- bending die
- upper mold
- die
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Classifications
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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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/08—Bending tubes using mandrels or the like in press brakes or between rams and anvils or abutments; Pliers with forming dies
Abstract
The present invention relates to a kind of complex spaces to move towards Large Diameter Pipeline thin wall pipelines manufacturing process and device, belongs to bend pipe manufacture Technology of Plastic Processing field.The present invention, which by numerical-controlled bending forming plus mold bends the method that is combined and devises a kind of complex space, moves towards thin wall pipelines manufacturing process and its building mortion, instead of the method that the pipeline of complex space trend uses conventional cast production, avoiding cast product, there are volumes to be necessarily large and bulky, working face is coarse and is also easy to the quality problems of sand hole.Entire manufacturing process and apparatus structure are reasonable, method is feasible and reliable, easy to operate and can ensure that bending quality, substantially increase the efficiency of production.The conduit of forming disclosure satisfy that aerospace flight vehicle requirement.
Description
Technical field
The present invention relates to bend pipe manufacture Technology of Plastic Processing fields, and in particular to a kind of complex space moves towards Large Diameter Pipeline thin-walled
Pipeline manufacturing process and device.
Background technology
Metal pipe material is widely used in structural member in the fields such as machinery, automobile due to having many advantages, such as that light-weight, intensity is high
Manufacture, while can also be used as the carrier of various fluid media (medium)s transmission.The supply of material state of tubing is mostly straight tube, in practical application
When, many occasions are required for carrying out bending machining in advance, can select different processing methods, wherein numerical control curved according to requirements
Pipe machine can accurate as requested, smoothly carry out the bending machining of tubing, and forming accuracy is high, technology stability is good, is suitable for
The precision bending of various tubing shapes.
In recent years, complex space moves towards the increasingly extensive application in the high-tech sectors such as Aeronautics and Astronautics of thin-winding pipe part.It is multiple
It moves towards thin-winding pipe and is mainly used for the low of installation space is small, modular construction is compact occasion conveying liquid or gaseous fluid in miscellaneous space
In pressure pipe road, it is chiefly used in the fields such as aerospace flight vehicle fuel system and exhaust system.With the light-weighted development of aircraft
The cooperation of demand, entire aircraft interior electrical equipment and conduit is more and more closer, requires the bulk of engine smaller
It is better, it should meet and get around electrical components demand, also to meet around bulkhead arrangement pipeline, thus the complexity in whole system is empty
Between move towards thin-winding pipe part demand also more come it is also big.
At present because being limited by equipment, mold and material in terms of the processing that complex space moves towards thin-winding pipe part, technique
It is upper never to obtain big breakthrough, so being also difficult to provide the product for complying fully with requirement so far.Because thin-wall numerical-controlled curved
During pipe, CNC tube bending machine can only execute rotary draw bending in one plane, can not shape tool simultaneously at the same position
There are two the complex spaces in direction to move towards thin-winding pipe part, thus has to walk instead of complex space using traditional casting pipeline
To tubing pipeline；Since there are volumes to be necessarily large and bulky, working face is coarse and has been also easy to sand hole for cast product, and then cause to flow
Design requirement is not achieved in amount.Thus development complex space move towards thin-winding pipe part forming technique have become it is in the urgent need to address
Critical issue and important development direction.
Invention content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to：How to design a kind of complex space move towards thin wall pipelines manufacturing process and its
Building mortion, to overcome the pipeline of current complex space trend to be deposited using the cast product that the method for conventional cast production occurs
Volume is necessarily large and bulky, working face is coarse and is also easy to the quality problems of sand hole.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of complex spaces to move towards Large Diameter Pipeline thin wall pipelines into shape dress
It sets, including bending die lower die 2, bending die upper mold 3 and guide pad 5；
The grooving diameter of the bending die upper mold 3 and bending die lower die 2 is bigger by 0.4 than 1 outer diameter of conduit~
0.8mm；Theoretical length cut has been drawn in the grooving diameter surface of the bending die upper mold 3 and bending die lower die 2；Institute
State the contact die joint of bending die upper mold 3 using offset up 0.1 as interface at 1 axis largest outside diameter profile of conduit~
0.3mm；The bending die lower die 2 contacts die joint to offset downward 0.1 as interface at 1 axis largest outside diameter profile of conduit
~0.3mm；The bending die upper mold 3 is oriented to bending die lower die 2 by the guide pad 5, the guide pad 5 with
Bending die upper mold 3 connects；In the bending die upper mold 3 interior lead is carried out equipped with multiple guide pins 7 at closely 1 outer diameter of conduit
To；Bending die lower die 2 is equipped with multiple lifting hanging rings 6.
Preferably, the scratch depth is no more than 0.15mm.
Preferably, the guide pad 5 by trip bolt 4 fasten and is spirally connected with bending die upper mold 3.
Preferably, 4 guide pins 7 carry out interior guiding at closely 1 outer diameter of conduit in the bending die upper mold 3.
Preferably, there are 4 lifting hanging rings 6 in the bending die lower die 2.
Realizing that complex space moves towards the side of Large Diameter Pipeline thin wall pipelines forming using described device the present invention also provides a kind of
Method includes the following steps：
S1, the theoretical sawing length that conduit 1 is calculated by the theoretical model axial length of conduit 1, and carry out blanking；
S2, it determines first curved springback angle by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as
First curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized 1 first curved essence of conduit
True bending forming；
S3, it determines second curved springback angle by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as
Second curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized 1 second curved essence of conduit
True bending forming；
S4, it anneals to formed conduit 1, annealing temperature adds 10 DEG C in recrystallization annealing temperature value, soaking time
For 1h~2h, cooled down with stove；
S5, to bending die upper mold 3 and bending die lower die 2 in the case where assembling closed state the upper mounting plate of forcing press and under
Platform carries out clamping and fixes；
S6, quartz sand is filled in the conduit after annealing, soldering and sealing is carried out to 1 both ends of conduit, and by conduit 1 in bending die
Grooving two-port in lower die 2 is positioned；
S7, bending die upper mold 3 is fixed on forcing press upper mounting plate, forcing press upper mounting plate downlink, bending die upper mold 3
After minimum point is contacted with conduit 1, downstream rate is maintained at certain level, and conduit 1 is led by grooving and 4 during decline
It is limited to pin 7；After two bight portions on conduit 1 enter grooving, the decrease speed of upper mounting plate, downstream rate are reduced
It is maintained at certain level, until forming stroke terminates；
After S8, bending die upper mold 3 and the contact fitting of bending die lower die 2,15~20s of pressurize, forming pressure is not less than
60 tons；
After S9, upper mounting plate up run to safe distance, the conduit 1 after forming is taken out, and anneals, annealing temperature
Subtract 30 under recrystallization annealing temperature value DEG C, soaking time is 0.5~1.5h, is cooled down with stove；
S10, the conduit 1 after annealing is put into the grooving of bending die lower die 2, forcing press upper mounting plate downlink, is bent
After upper mould 3 and the contact fitting of bending die lower die 2,10~15s of pressurize, forming pressure is not less than 80 tons；
On the basis of S11, the theoretical length cut left in forming process on 1 surface of conduit, sawing shapes rear tube 1
Both ends surplus, and outwell the quartz sand in conduit 1.
Preferably, further include step S12 after step s 11, the burr at 1 both ends of removal conduit of polishing, and pickling removes
1 inner and outer surfaces oxide skin of conduit.
Preferably, in step S7, after 3 minimum point of bending die upper mold is contacted with conduit 1, downstream rate is maintained at 3mm/s
~5mm/s；After two bight portions on conduit 1 enter grooving, the downstream rate of upper mounting plate is maintained at 1mm/s~2mm/s,
Until forming stroke terminates.
Preferably, in step S4, annealing temperature is 375 DEG C, soaking time 1h.
Preferably, in step S9, annealing temperature is 345 DEG C, soaking time 0.5h.
(3) advantageous effect
The present invention, which by numerical-controlled bending forming plus mold bends the method that is combined and devises a kind of complex space, moves towards thin
Wall pipeline manufacturing process and its building mortion are kept away instead of the method that the pipeline of complex space trend uses conventional cast production
Having exempted from cast product, there are volumes to be necessarily large and bulky, working face is coarse and is also easy to the quality problems of sand hole.Entire manufacturing process
With apparatus structure is reasonable, method is feasible and reliable, easy to operate and can ensure that bending quality, substantially increase the efficiency of production.
The conduit of forming disclosure satisfy that aerospace flight vehicle requirement.
Description of the drawings
Fig. 1 is that the complex space of the embodiment of the present invention moves towards thin wall pipelines bending press agent structure schematic diagram；
Fig. 2 is the middle bending die lower die structure schematic diagram of the embodiment of the present invention；
Fig. 3 is the bending die upper die structure schematic diagram of the embodiment of the present invention.
Specific implementation mode
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Specific implementation mode is described in further detail.
Complex space provided by the invention moves towards Large Diameter Pipeline thin wall pipelines building mortion, as shown in Figure 1, Figure 2, Figure 3 shows, including
Bending die lower die 2, bending die upper mold 3 and guide pad 5.
In order to the conduit 1 after bend pipe can smooth press-in die, the forming of bending die upper mold 3 and bending die lower die 2
Slot diameter is bigger 0.4mm than 1 outer diameter of conduit；By drawing theoretical length scale trace line in grooving diameter surface, (scratch depth is not
More than 0.15mm), to facilitate removal 1 both ends surplus of conduit after forming；To ensure that complex space moves towards thin wall pipelines in bending die
Tool push direction form accuracy, bending die upper mold 3 contact die joint using at 1 axis largest outside diameter profile of conduit as interface
Offset up 0.1mm；Bending die lower die 2 contact die joint using at 1 axis largest outside diameter profile of conduit as interface downward bias
Move 0.1mm；Bending die upper mold 3 is oriented to bending die lower die 2 by guide pad 5, guide pad 5 and bending die upper mold
3 carry out fastening by trip bolt 4 is spirally connected；Have at closely 1 outer diameter of conduit in bending die upper mold 3 in 4 guide pins 7 carry out
It is oriented to, conduit 1 is avoided to occur play in forming process；There are 4 lifting hanging rings 6 in bending die lower die 2, to facilitate mold
Lifting and transport.
The embodiment of the present invention select Aluminum Alloy Tube be 5A03 tubing, specification be Φ 38mm × 1.5mm (tube outer diameter ×
Wall thickness), bending radius R76, i.e. relative bending radius (bending radius/tube outer diameter) they are about 2.
It is that the embodiment of the present invention is realized using above-mentioned apparatus, pipeline forming technology flow is realized to above-mentioned pipe fitting, including such as
Lower step：
S1 the theoretical sawing length of conduit 1) is calculated by the theoretical model axial length of conduit 1, and completes blanking.
S2) first curved springback angle is determined by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as
First curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized 1 first curved essence of conduit
True bending forming.
S3) second curved springback angle is determined by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as
Second curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized 1 second curved essence of conduit
True bending forming.
S4 it) anneals to formed conduit 1, annealing temperature adds 10 DEG C in recrystallization annealing temperature value, annealing temperature
It it is 375 DEG C, soaking time 1h is cooled down with stove.
S5 it is) to avoid that assembly dislocation occurs on pressure machine platform, exists to bending die upper mold 3 and bending die lower die 2
Clamping is carried out under assembly closed state in the upper mounting plate and lower platform of forcing press to fix.
S6 quartz sand) is filled in the conduit 1 after annealing, it is 100 that quartz sand, which requires cleaning free from admixture, dry and granularity,
Mesh, quartz sand require compacting, 1 both ends of conduit to carry out soldering and sealing.And the grooving two-port by conduit 1 in bending die lower die 2
It is positioned.
S7) bending die upper mold 3 is fixed on forcing press upper mounting plate, and forcing press upper mounting plate downlink, bending die upper mold 3 is most
After low spot is contacted with conduit 1, downstream rate is maintained at 3mm/s, and conduit 1 passes through grooving and 4 during slow decline
Guide pin 7 is limited；After two bight portions on conduit 1 enter grooving, the decrease speed of upper mounting plate, lower scanning frequency are reduced
Degree is maintained at 1mm/s, until forming stroke terminates.
S8 after) bending die upper mold 3 and the contact of bending die lower die 2 are bonded, pressurize 20s, forming pressure is 60 tons.
S9 after) upper mounting plate up runs to safe distance, the conduit after forming is taken out, and anneals, annealing temperature
Subtract 30 under recrystallization annealing temperature value DEG C, annealing temperature is 345 DEG C, and soaking time 0.5h is cooled down with stove.
S10) conduit 1 after annealing is put into the grooving of bending die lower die 2, forcing press upper mounting plate downlink, is bent
After upper mould 3 and the contact fitting of bending die lower die 2, pressurize 10s, forming pressure is 90 tons.
S11 on the basis of the theoretical length cut) left in forming process on 1 surface of conduit, sawing shapes rear tube 1
Both ends surplus, and outwell the quartz sand in conduit 1.
S12) the burr at 1 both ends of polishing removal conduit, and pickling removes conduit inner and outer surfaces oxide skin.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of utilization complex space moves towards Large Diameter Pipeline thin wall pipelines building mortion and realizes that complex space moves towards Large Diameter Pipeline thin-wall tube
The method of road forming, which is characterized in that
It includes bending die lower die (2), bending die upper mold (3) that the complex space, which moves towards Large Diameter Pipeline thin wall pipelines building mortion,
With guide pad (5)；
The grooving diameter of the bending die upper mold (3) and bending die lower die (2) is bigger by 0.4 than conduit (1) outer diameter~
0.8mm；Theoretical length is drawn in the grooving diameter surface of the bending die upper mold (3) and bending die lower die (2) to draw
Trace；The contact die joint of the bending die upper mold (3) at conduit (1) axis largest outside diameter profile as interface to offset up
0.1~0.3mm；The bending die lower die (2) contact die joint at conduit (1) axis largest outside diameter profile for boundary towards
0.1~0.3mm of lower offset；The bending die upper mold (3) is led with bending die lower die (2) by the guide pad (5)
To the guide pad (5) connect with bending die upper mold (3)；In closely conduit (1) outer diameter on the bending die upper mold (3)
Place is equipped with multiple guide pins (7) and carries out interior be oriented to；Bending die lower die (2) is equipped with multiple lifting hanging rings (6)；
It the described method comprises the following steps：
S1, the theoretical sawing length that conduit (1) is calculated by the theoretical model axial length of conduit (1), and carry out blanking；
S2, it determines first curved springback angle by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as first
A curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized curved accurate of (1) first, conduit
Bending forming；
S3, it determines second curved springback angle by testing and measuring, theoretical bending angle is subtracted into springback angle and is determined as second
A curved bending angle is simultaneously programmed by CNC tube bending machine, is carried out data transfer and is realized curved accurate of (1) second, conduit
Bending forming；
S4, it anneals to formed conduit (1), annealing temperature adds 10 DEG C in recrystallization annealing temperature value, and soaking time is
1h~2h is cooled down with stove；
S5, to bending die upper mold (3) and bending die lower die (2) in the case where assembling closed state the upper mounting plate of forcing press and under
Platform carries out clamping and fixes；
S6, quartz sand is filled in the conduit after annealing, soldering and sealing is carried out to conduit (1) both ends, and by conduit (1) in bending die
Grooving two-port in lower die (2) is positioned；
S7, bending die upper mold (3) is fixed on forcing press upper mounting plate, forcing press upper mounting plate downlink, bending die upper mold (3)
After minimum point is contacted with conduit (1), downstream rate is maintained at certain level, during decline conduit (1) by grooving and
Guide pin (7) is limited；After two bight portions on conduit (1) enter grooving, the decrease speed of upper mounting plate is reduced, under
Scanning frequency degree is maintained at certain level, until forming stroke terminates；
After S8, bending die upper mold (3) and bending die lower die (2) contact fitting, 15~20s of pressurize, forming pressure is not less than
60 tons；
After S9, upper mounting plate up run to safe distance, the conduit (1) after forming is taken out, and anneals, annealing temperature exists
Subtract 30 under recrystallization annealing temperature value DEG C, soaking time is 0.5~1.5h, is cooled down with stove；
S10, the conduit (1) after annealing is put into the grooving of bending die lower die (2), forcing press upper mounting plate downlink, is bent
After upper mould (3) and bending die lower die (2) contact fitting, 10~15s of pressurize, forming pressure is not less than 80 tons；
On the basis of S11, the theoretical length cut left in forming process on conduit (1) surface, sawing shapes rear tube (1)
Both ends surplus, and outwell the quartz sand in conduit (1).
2. the method as described in claim 1, which is characterized in that further include step S12 after step s 11, removal of polishing is led
The burr at (1) both ends is managed, and pickling removes conduit (1) inner and outer surfaces oxide skin.
3. the method as described in claim 1, which is characterized in that in step S7, bending die upper mold (3) minimum point and conduit
(1) after contacting, downstream rate is maintained at 3mm/s~5mm/s；It is upper flat after two bight portions on conduit (1) enter grooving
The downstream rate of platform is maintained at 1mm/s~2mm/s, until forming stroke terminates.
4. the method as described in claim 1, which is characterized in that in step S4, annealing temperature is 375 DEG C, soaking time 1h.
5. the method as described in claim 1, which is characterized in that in step S9, annealing temperature is 345 DEG C, and soaking time is
0.5h。
6. the method as described in claim 1, which is characterized in that the scratch depth is no more than 0.15mm.
7. the method as described in claim 1, which is characterized in that the guide pad (5) passes through fastening with bending die upper mold (3)
Screw (4) carries out fastening and is spirally connected.
8. the method as described in claim 1, which is characterized in that in closely conduit (1) outer diameter on the bending die upper mold (3)
Place has 4 guide pins (7) to carry out interior be oriented to.
9. such as method described in any item of the claim 1 to 8, which is characterized in that have 4 on the bending die lower die (2)
Lifting hanging ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610797043.6A CN106311836B (en) | 2016-08-31 | 2016-08-31 | Complex space moves towards Large Diameter Pipeline thin wall pipelines manufacturing process and device |
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| CN201610797043.6A CN106311836B (en) | 2016-08-31 | 2016-08-31 | Complex space moves towards Large Diameter Pipeline thin wall pipelines manufacturing process and device |
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| CN106311836B true CN106311836B (en) | 2018-08-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108394118B (en) * | 2018-03-02 | 2019-08-02 | 商丘工学院 | A kind of mechanical material prepares mold |
| CN109443184A (en) * | 2018-12-11 | 2019-03-08 | 上海汽车空调配件股份有限公司 | A kind of the automatic detection cubing and detection method of pipe fitting |
| CN110434237B (en) * | 2019-09-02 | 2024-04-12 | 河南永福德科技股份有限公司 | Elbow split die and elbow manufacturing method |
| CN110434206B (en) * | 2019-09-02 | 2024-04-12 | 河南永福德科技股份有限公司 | Bent pipe forming device and bent pipe forming method |
| CN113967703B (en) * | 2021-10-20 | 2023-05-05 | 贵州永红航空机械有限责任公司 | High-temperature alloy large-radian thin-wall capillary radiating pipe bending forming device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6032511A (en) * | 1998-12-11 | 2000-03-07 | Tseng; Shao-Chien | Three-dimensional simple flexible mould for bending pipes |
| ITMI20072372A1 (en) * | 2007-12-19 | 2009-06-20 | Ibf S P A | PROCEDURE FOR BENDING TUBULAR ARTICLES WITH A REPORT> 3 BETWEEN THE BENDING RADIUS AND THE EXWERN DIAMETER OF THE FINISHED TUBE |
| CN201217033Y (en) * | 2008-06-26 | 2009-04-08 | 西北工业大学 | Interlock structure for mould of tube-bending machine |
| CN103753118A (en) * | 2013-12-09 | 2014-04-30 | 北京航星机器制造有限公司 | Bending method of large-diameter thin-wall aluminum pipe and die |
| CN105583252A (en) * | 2016-03-07 | 2016-05-18 | 北京航空航天大学 | Hydroforming method of axis continuous bending special-shaped pipe fitting |
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