CN106311836A - Forming method and device for large-pipe-diameter thin-wall pipeline moving towards complex space - Google Patents
Forming method and device for large-pipe-diameter thin-wall pipeline moving towards complex space Download PDFInfo
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- CN106311836A CN106311836A CN201610797043.6A CN201610797043A CN106311836A CN 106311836 A CN106311836 A CN 106311836A CN 201610797043 A CN201610797043 A CN 201610797043A CN 106311836 A CN106311836 A CN 106311836A
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- conduit
- bending die
- upper mold
- lower mold
- bending
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a forming method and device for a large-pipe-diameter thin-wall pipeline moving towards a complex space, and belongs to the technical field of bent pipe manufacturing plastic processing. The forming method and device for the large-pipe-diameter thin-wall pipeline moving towards the complex space is designed through a method of combining numerical control rotary draw bending with die bending. A traditional casting production method adopted for the pipeline moving towards the complex space is replaced, and the quality problems that casting products are large in size, heavy, rough in working surface and likely to produce sand holes are avoided. According to the whole forming method and device, the structure is reasonable, the method is workable and reliable, operation is convenient, pipe bending quality can be ensured, production efficiency is greatly improved, and the formed guide pipe can meet the requirements of aeronautics and astronautics devices.
Description
Technical field
The present invention relates to bend pipe and manufacture Technology of Plastic Processing field, be specifically related to a kind of complex space and move towards Large Diameter Pipeline thin-walled
Pipeline manufacturing process and device.
Background technology
Metal pipe material, owing to having lightweight, intensity advantages of higher, is widely used in structural member in the field such as machinery, automobile
Manufacture, the carrier that simultaneously can also transmit as various fluid media (medium)s.The supply of material state of tubing mostly is straight tube, applies in reality
Time, a lot of occasions are required for being curved in advance processing, can according to requirements select different processing methods, and wherein numerical control is curved
Pipe machine can the most accurately, smoothly carry out the bending machining of tubing, 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.Multiple
Miscellaneous space is moved towards thin-winding pipe and is mainly used in the low of installing space is little, modular construction is compact occasion conveying liquid or gaseous fluid
In pressure pipe road, it is used for the fields such as aerospace flight vehicle fuel system and gas extraction system.Along with the light-weighted development of aircraft
Demand, the cooperation of whole aircraft interior electrical equipment and conduit is increasingly tightr, requires the least to the bulk of electromotor
The best, the electric original paper demand that gets around should be met, also to meet around bulkhead arrangement pipeline, thus the complicated sky in whole system
Between move towards the demand of thin-winding pipe part and the most more come the biggest.
At present because being limited by equipment, mould and material in terms of complex space moves towards the processing of thin-winding pipe part, technique
On never obtain big breakthrough, so being also difficult to so far provide the product complying fully with requirement.Because thin-wall numerical-controlled curved
During pipe, CNC tube bending machine can only perform rotary draw bending in one plane, it is impossible to shape tool at same position simultaneously
The complex space having both direction moves towards thin-winding pipe part, thus has to use traditional foundry goods pipeline to replace complex space to walk
To tubing pipeline；Be necessarily large and bulky owing to cast product exists volume, work surface is coarse and has been also easy to sand hole, and then causes stream
Amount does not reaches design requirement.Thus the forming technique that development complex space moves towards thin-winding pipe part has become in the urgent need to address
Key issue and important development direction.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is: how to design a kind of complex space move towards thin wall pipelines manufacturing process and
Forming device, the cast product that the method using conventional cast to produce with the pipeline overcoming current complex space to move towards is occurred is deposited
Be necessarily large and bulky at volume, work surface is coarse and is also easy to the quality problems of sand hole.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of complex space and move towards Large Diameter Pipeline thin wall pipelines shaping dress
Put, including bending die lower mold 2, bending die upper mold 3 and guide pad 5；
The grooving diameter of described bending die upper mold 3 and bending die lower mold 2 all than conduit 1 external diameter big 0.4～
0.8mm；Grooving diameter surface in described bending die upper mold 3 and bending die lower mold 2 has all drawn theoretical length cut；Institute
State the contact die joint of bending die upper mold 3 with at conduit 1 axis largest outside diameter profile for separating surface offset up 0.1～
0.3mm；Described bending die lower mold 2 contacts die joint and offsets downward 0.1 for separating surface at conduit 1 axis largest outside diameter profile
～0.3mm；Described bending die upper mold 3 and bending die lower mold 2 is guided by described guide pad 5, described guide pad 5 with
Bending die upper mold 3 connects；It is provided with in multiple guide finger 7 is carried out in adjacent conduit 1 outer radius in described bending die upper mold 3 and leads
To；Bending die lower mold 2 is provided with multiple lifting suspension ring 6.
Preferably, described scratch depth is less than 0.15mm.
Preferably, described guide pad 5 and bending die upper mold 3 carry out fastening by trip bolt 4 and are spirally connected.
Preferably, described bending die upper mold 3 there are 4 guide fingers 7 to carry out interior guiding in adjacent conduit 1 outer radius.
Preferably, described bending die lower mold 2 there are 4 lifting suspension ring 6.
Present invention also offers a kind of utilize described device realize complex space move towards Large Diameter Pipeline thin wall pipelines shape side
Method, comprises the following steps:
S1, calculated the theoretical sawing length of conduit 1 by the theoretical model axial length of conduit 1, and carry out blanking；
S2, by test and measure determine first curved springback angle, theory angle of bend is deducted springback angle and is defined as
First curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes 1 first curved essence of conduit
Really bending forming；
S3, by test and measure determine second curved springback angle, theory angle of bend is deducted springback angle and is defined as
Second curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes 1 second curved essence of conduit
Really bending forming；
S4, annealing formed conduit 1, annealing temperature adds 10 DEG C at recrystallization annealing temperature value, temperature retention time
For 1h～2h, cool down with stove；
S5, to bending die upper mold 3 and bending die lower mold 2 under assembling closure state forcing press upper mounting plate and under
Platform carries out clamping to be fixed；
S6, toward filled stone sand in the conduit after annealing, conduit 1 two ends are carried out soldering and sealing, and by conduit 1 at bending die
Grooving two-port in lower mold 2 positions；
S7, bending die upper mold 3 being fixed on forcing press upper mounting plate, forcing press upper mounting plate is descending, bending die upper mold 3
After minimum point contacts with conduit 1, downstream rate is maintained at certain level, and during declining, conduit 1 is led by grooving and 4
Carry out spacing to pin 7；After two bight portion on conduit 1 enter grooving, reduce the decrease speed of upper mounting plate, downstream rate
Being maintained at certain level, terminating until shaping stroke；
After S8, bending die upper mold 3 contact laminating with bending die lower mold 2, pressurize 15～20s, forming pressure is not less than
60 tons；
After S9, upper mounting plate up run to safe distance, the conduit 1 after shaping takes out, and anneals, annealing temperature
Subtracting 30 under recrystallization annealing temperature value DEG C, temperature retention time is 0.5～1.5h, cools down with stove；
S10, the conduit 1 after annealing being put into the grooving of bending die lower mold 2, forcing press upper mounting plate is descending, bends
After upper mould 3 contacts laminating with bending die lower mold 2, pressurize 10～15s, forming pressure is not less than 80 tons；
On the basis of S11, the theoretical length cut stayed in forming process on conduit 1 surface, sawing shapes rear tube 1
Two ends surplus, and outwell the quartz sand in conduit 1.
Preferably, the most also include that step S12, polishing remove the burr at conduit 1 two ends, and pickling is removed
Conduit 1 surfaces externally and internally oxide skin.
Preferably, in step S7, after bending die upper mold 3 minimum point contacts with conduit 1, downstream rate is maintained at 3mm/s
～5mm/s；After two bight portion on conduit 1 enter grooving, the downstream rate of upper mounting plate is maintained at 1mm/s～2mm/s,
Terminate until shaping stroke.
Preferably, in step S4, annealing temperature is 375 DEG C, and temperature retention time is 1h.
Preferably, in step S9, annealing temperature is 345 DEG C, and temperature retention time is 0.5h.
(3) beneficial effect
The present invention is shaped by numerical-controlled bending and adds the bend method that combines of mould and devise a kind of complex space and move towards thin
Wall pipeline manufacturing process and forming device thereof, instead of the method that the pipeline of complex space trend uses conventional cast to produce, keep away
Exempt from cast product and had that volume is necessarily large and bulky, work surface is coarse and is also easy to the quality problems of sand hole.Whole manufacturing process
Reasonable with apparatus structure, method is feasible and reliable, easy to operate and can ensure that bending quality, substantially increases the efficiency of production.
The conduit shaped disclosure satisfy that aerospace flight vehicle requirement.
Accompanying drawing explanation
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.
Detailed description of the invention
For making the purpose of the present invention, content and advantage clearer, below in conjunction with the accompanying drawings and embodiment, to the present invention's
Detailed description of the invention is described in further detail.
The complex space that the present invention provides moves towards Large Diameter Pipeline thin wall pipelines forming device, as shown in Figure 1, Figure 2, Figure 3 shows, including
Bending die lower mold 2, bending die upper mold 3 and guide pad 5.
In order to the conduit 1 after bend pipe can press-in die, bending die upper mold 3 and the shaping of bending die lower mold 2 smoothly
Groove diameter is all than the conduit 1 big 0.4mm of external diameter；By drawing theoretical length scale trace line in grooving diameter surface, (scratch depth is not
More than 0.15mm), to remove conduit 1 two ends surplus after facilitating shaping；For ensureing that complex space moves towards thin wall pipelines at bending die
Tool press down the form accuracy in direction, bending die upper mold 3 contact die joint with at conduit 1 axis largest outside diameter profile as separating surface
Offset up 0.1mm；Bending die lower mold 2 contact die joint with at conduit 1 axis largest outside diameter profile for separating surface downward bias
Move 0.1mm；Bending die upper mold 3 is guided by guide pad 5 with bending die lower mold 2, guide pad 5 and bending die upper mold
3 carry out fastening by trip bolt 4 is spirally connected；In bending die upper mold 3 in adjacent conduit 1 outer radius has 4 guide fingers 7 to carry out
Guide, it is to avoid conduit 1 occurs play in forming process；4 lifting suspension ring 6 are had, to facilitate mould in bending die lower mold 2
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 is R76, i.e. relative bending radius (bending radius/tube outer diameter) is about 2.
The embodiment of the present invention use said apparatus realize, above-mentioned pipe fitting is realized pipeline forming technology flow process, including such as
Lower step:
S1) calculated the theoretical sawing length of conduit 1 by the theoretical model axial length of conduit 1, and complete blanking.
S2) determine first curved springback angle by test and measurement, theory angle of bend is deducted springback angle and is defined as
First curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes 1 first curved essence of conduit
Really bending forming.
S3) determine second curved springback angle by test and measurement, theory angle of bend is deducted springback angle and is defined as
Second curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes 1 second curved essence of conduit
Really bending forming.
S4) annealing formed conduit 1, annealing temperature adds 10 DEG C at recrystallization annealing temperature value, annealing temperature
Being 375 DEG C, temperature retention time is 1h, cools down with stove.
S5) for avoiding assembling dislocation on forcing press platform, bending die upper mold 3 and bending die lower mold 2 are existed
Under assembling closure state, upper mounting plate and lower platform at forcing press carry out clamping and fix.
S6) toward filled stone sand in the conduit 1 after annealing, quartz sand requires cleaning free from admixture, is dried and granularity is 100
Mesh, quartz sand requires compacting, and conduit 1 two ends carry out soldering and sealing.And by the conduit 1 grooving two-port in bending die lower mold 2
Position.
S7) bending die upper mold 3 is fixed on forcing press upper mounting plate, and forcing press upper mounting plate is descending, and bending die upper mold 3 is
After low spot contacts with conduit 1, downstream rate is maintained at 3mm/s, and during slowly declining, conduit 1 is by grooving and 4
Guide finger 7 carries out spacing；After two bight portion on conduit 1 enter grooving, reduce the decrease speed of upper mounting plate, lower scanning frequency
Degree is maintained at 1mm/s, terminates until shaping stroke.
S8), after bending die upper mold 3 contacts laminating with bending die lower mold 2, pressurize 20s, forming pressure is 60 tons.
S9), after upper mounting plate up runs to safe distance, the conduit after shaping takes out, and anneals, annealing temperature
Subtracting 30 under recrystallization annealing temperature value DEG C, annealing temperature is 345 DEG C, and temperature retention time is 0.5h, cools down with stove.
S10) conduit 1 after annealing is put into the grooving of bending die lower mold 2, and forcing press upper mounting plate is descending, bends
After upper mould 3 contacts laminating with bending die lower mold 2, pressurize 10s, forming pressure is 90 tons.
S11), on the basis of the theoretical length cut stayed in forming process on conduit 1 surface, sawing shapes rear tube 1
Two ends surplus, and outwell the quartz sand in conduit 1.
S12) burr at conduit 1 two ends is removed in polishing, and conduit surfaces externally and internally oxide skin is removed in pickling.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (10)
1. a complex space moves towards Large Diameter Pipeline thin wall pipelines forming device, it is characterised in that include bending die lower mold (2),
Bending die upper mold (3) and guide pad (5)；
The grooving diameter of described bending die upper mold (3) and bending die lower mold (2) all than conduit (1) external diameter big 0.4～
0.8mm；Grooving diameter surface described bending die upper mold (3) and bending die lower mold (2) has all been drawn theoretical length and has been drawn
Trace；The contact die joint of described bending die upper mold (3) is being that separating surface offsets up at conduit (1) axis largest outside diameter profile
0.1～0.3mm；Described bending die lower mold (2) contact die joint with at conduit (1) axis largest outside diameter profile for demarcate towards
Lower skew 0.1～0.3mm；Described bending die upper mold (3) is led by described guide pad (5) with bending die lower mold (2)
To, described guide pad (5) is connected with bending die upper mold (3)；At adjacent conduit (1) external diameter on described bending die upper mold (3)
Place is provided with multiple guide finger (7) and carries out interior guiding；Bending die lower mold (2) is provided with multiple lifting suspension ring 6.
2. device as claimed in claim 1, it is characterised in that described scratch depth is less than 0.15mm.
3. device as claimed in claim 1, it is characterised in that described guide pad (5) and bending die upper mold (3) are by fastening
Screw (4) carries out fastening and is spirally connected.
4. device as claimed in claim 1, it is characterised in that at adjacent conduit (1) external diameter on described bending die upper mold (3)
Place has 4 guide fingers (7) to carry out interior guiding.
5. the device as according to any one of Claims 1-4, it is characterised in that have 4 on described bending die lower mold (2)
Lifting suspension ring (6).
6. one kind utilize the device any one of claim 1 to 5 realize complex space move towards Large Diameter Pipeline thin wall pipelines shape
Method, it is characterised in that comprise the following steps:
S1, calculated the theoretical sawing length of conduit (1) by the theoretical model axial length of conduit (1), and carry out blanking；
S2, by test and measure determine first curved springback angle, theory angle of bend is deducted springback angle and is defined as first
Individual curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes curved accurate of (1) first, conduit
Bending forming；
S3, by test and measure determine second curved springback angle, theory angle of bend is deducted springback angle and is defined as second
Individual curved angle of bend is also programmed by CNC tube bending machine, carries out data transmission and realizes curved accurate of (1) second, conduit
Bending forming；
S4, annealing formed conduit (1), annealing temperature adds 10 DEG C at recrystallization annealing temperature value, and temperature retention time is
1h～2h, cools down with stove；
S5, to bending die upper mold (3) and bending die lower mold (2) under assembling closure state forcing press upper mounting plate and under
Platform carries out clamping to be fixed；
S6, toward filled stone sand in the conduit after annealing, conduit (1) two ends are carried out soldering and sealing, and by conduit (1) at bending die
Grooving two-port in lower mold (2) positions；
S7, bending die upper mold (3) being fixed on forcing press upper mounting plate, forcing press upper mounting plate is descending, bending die upper mold (3)
After minimum point contacts with conduit (1), downstream rate is maintained at certain level, during declining conduit (1) by grooving and
Guide finger (7) carries out spacing；After two bight portion on conduit (1) enter grooving, reduce the decrease speed of upper mounting plate, under
Line speed is maintained at certain level, terminates until shaping stroke；
After S8, bending die upper mold (3) contact laminating with bending die lower mold (2), pressurize 15～20s, forming pressure is not less than
60 tons；
After S9, upper mounting plate up run to safe distance, the conduit (1) after shaping takes out, and anneals, and annealing temperature exists
Subtracting 30 under recrystallization annealing temperature value DEG C, temperature retention time is 0.5～1.5h, cools down with stove；
S10, the conduit (1) after annealing being put into the grooving of bending die lower mold (2), forcing press upper mounting plate is descending, bends
After upper mould (3) contacts laminating with bending die lower mold (2), pressurize 10～15s, forming pressure is not less than 80 tons；
On the basis of S11, the theoretical length cut stayed in forming process on conduit (1) surface, sawing shapes rear tube (1)
Two ends surplus, and outwell the quartz sand in conduit (1).
7. method as claimed in claim 6, it is characterised in that the most also include that step S12, polishing removal are led
The burr at pipe (1) two ends, and pickling removal conduit (1) surfaces externally and internally oxide skin.
8. method as claimed in claim 6, it is characterised in that in step S7, bending die upper mold (3) minimum point and conduit
(1), after contact, downstream rate is maintained at 3mm/s～5mm/s；After two bight portion on conduit (1) enter grooving, upper flat
The downstream rate of platform is maintained at 1mm/s～2mm/s, terminates until shaping stroke.
9. method as claimed in claim 6, it is characterised in that in step S4, annealing temperature is 375 DEG C, and temperature retention time is 1h.
10. method as claimed in claim 6, it is characterised in that in step S9, annealing temperature is 345 DEG C, and temperature retention time is
0.5h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106311836A true CN106311836A (en) | 2017-01-11 |
| CN106311836B CN106311836B (en) | 2018-08-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394118A (en) * | 2018-03-02 | 2018-08-14 | 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 |
| CN110434206A (en) * | 2019-09-02 | 2019-11-12 | 河南永福德科技股份有限公司 | Bending and molding device and forming elbow method |
| CN110434237A (en) * | 2019-09-02 | 2019-11-12 | 河南永福德科技股份有限公司 | Bend pipe Split mold and method for manufacturing bent pipe |
| CN113967703A (en) * | 2021-10-20 | 2022-01-25 | 贵州永红航空机械有限责任公司 | Bending forming device and method for high-temperature alloy large-radian thin-wall capillary heat-dissipation tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108394118A (en) * | 2018-03-02 | 2018-08-14 | 商丘工学院 | A kind of mechanical material prepares mold |
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| 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 |
| 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 |
| CN113967703A (en) * | 2021-10-20 | 2022-01-25 | 贵州永红航空机械有限责任公司 | Bending forming device and method for high-temperature alloy large-radian thin-wall capillary heat-dissipation tube |
| 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 |
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|---|---|
| CN106311836B (en) | 2018-08-17 |
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