CN109821944A - A kind of Three Dimensional Thermal stretch wrap forming device of segmentation control shape temperature control - Google Patents
A kind of Three Dimensional Thermal stretch wrap forming device of segmentation control shape temperature control Download PDFInfo
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- CN109821944A CN109821944A CN201910292429.5A CN201910292429A CN109821944A CN 109821944 A CN109821944 A CN 109821944A CN 201910292429 A CN201910292429 A CN 201910292429A CN 109821944 A CN109821944 A CN 109821944A
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- 230000011218 segmentation Effects 0.000 title claims abstract description 65
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000004321 preservation Methods 0.000 claims abstract description 13
- 239000010425 asbestos Substances 0.000 claims abstract description 10
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 10
- 239000011257 shell material Substances 0.000 claims description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 12
- 238000007493 shaping process Methods 0.000 abstract description 4
- 208000036829 Device dislocation Diseases 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000005619 thermoelectricity Effects 0.000 abstract 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 59
- 229910001069 Ti alloy Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000003340 mental effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
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- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a kind of Three Dimensional Thermal stretch wrap forming devices of segmentation control shape temperature control, are mainly made of pedestal, segmentation incubator, forming unit, hydraulic cylinder bracket, hydraulic cylinder, transformer, temperature control cabinet；Wherein, pedestal is L shape, is provided with several T-slots on longitudinal direction；Forming unit is mounted in T-slot by the T-type sliding block of frame bottom；Segmentation incubator is mounted on the slide block guide rail of forming unit, is constituted trailing type structure, is moved together with forming unit；It is segmented at the both-side opening of incubator and is closed with high-temperature flexible cutting means enclosure and asbestos gauge, reduce heat loss；Hydraulic cylinder is fixed on hydraulic cylinder bracket and pedestal, and hydraulic cylinder piston rod is fixedly connected with forming unit backboard, and by control piston rod displacement, simultaneously there is positioning function in the position of adjustable forming unit to it；Profile is used from resistance heating, transformer connection section bar and temperature control cabinet, and temperature control cabinet controls the heating of resistance wire and the acquisition of thermoelectricity even data；The present invention has independent heat preservation property by design, and the segmentation control shape temperature regulating device moved in forming process with profile, heating efficiency and temperature control precision are improved, and realizes flexible, efficient, the inexpensive Three Dimensional Thermal stretch bending Accurate Shaping of difficult-to-machine metal profile under room temperature.
Description
Technical field
The present invention relates to a kind of Three Dimensional Thermal stretch wrap forming devices of segmentation control shape temperature control, are used for specifically, being related to one kind
The device of aircraft or track train titanium alloy profile hot-drawn o ing, belongs to mental section stretch wrap forming technical field.
Background technique
Mental section three-dimensional bending drip molding can be widely applied to the vehicle bodies three-dimensional bone such as space flight and aviation, track train, automobile
In the production of frame structural member.The principle of stretch wrap forming is to apply tangential pulling force to profile, by changing the position of internal neutral layer,
To make profile bend.Stretch bending process crooked part biggish for yield strength ratio has good forming effect, and
And bending quality is high, springback capacity is small, therefore is widely used in the forming of airframe, bulkhead, rib, engine mount connector
In manufacture.Three-dimensional bent structure part generally uses the three-dimensional bending forming technique of unitary mould or multiple spot mold to be processed at present
Shape.Metal material preferable for formability under room temperature, only at room temperature can three-dimensional bending product needed for Accurate Shaping, so
And the metal material poor for formability under room temperature, such as titanium alloy difficult-to-machine material, resistance of deformation is big under room temperature, modeling
Property is poor, process window is narrow, and to Forming Equipments, more stringent requirements are proposed, such part be difficult to realize at room temperature accurate plasticity at
Shape.
For the processing of such difficult-to-deformation material, by taking titanium alloy as an example, general use is hindered after the modes such as heating heat again certainly
Carry out Plastic Forming processing.However there are the following problems in mental section hot-drawn o ing field: first is that metal stretch wrap forming at present
The process and device of part are opposite for the research of three-dimensional hot-drawn o ing part primarily directed to two-dimensional hot-drawn o ing
Less, technology is immature, and equipment and technique are incomplete；Second is that the hot-drawn o ing of multiple spot three-dimensional is directed to, generally using whole
Body incubator, by mold integral coating in cabinet, the disadvantage is that: heating space is big, and energy consumption is high, and thermometric is not accurate enough and has and prolongs
Shi Xing, there is no a set of good efficient heating and heat-insulating device and processes at present.
For the Three Dimensional Thermal stretch wrap forming for solving the problems, such as the difficult-to-deformation materials such as above-mentioned titanium alloy, it is necessary to design a kind of metal mold
Material Three Dimensional Thermal stretch wrap forming device and process have a kind of Three Dimensional Thermal stretch bending of segmentation control shape temperature control of independent heat preservation property
Forming device realizes flexible, efficient, the inexpensive Three Dimensional Thermal stretch bending Accurate Shaping of mental section with this.
Summary of the invention
Production status is shaped in view of three-dimensional bending, the present invention provides a kind of Three Dimensional Thermal stretch wrap formings of segmentation control shape temperature control
Device devises a kind of segmentation incubator with independent heat preservation property.Compared to monoblock type incubator, the heat preservation independently kept the temperature is imitated
Fruit is more preferable, more efficient, and segmentation incubator is mounted on forming unit, and forming unit and segmentation incubator are combined into trailing type knot
Structure, and the space of whole relative closure is formed, the positioning of hydraulic cylinder is more acurrate, and insulating efficiency is more preferable.Segmentation heat preservation tank wall
Face adds the structure of metal shell using insulating layer, wherein heat preservation layer material uses mullite fiber plate, metal shell material is used
Heat-resistance stainless steel.It is segmented at the top of incubator there are opening, for being segmented incubator internal resistance silk and thermocouple and temperature control
The connection of cabinet, and connected between segmentation incubator by high-temperature flexible cutting means enclosure, close to clamp two sides segmentation incubator
Opening is closed with asbestos gauge, and the size of asbestos gauge opening is reduced point depending on the sectional area of profile and curved shape with this
Section incubator internal heat is scattered and disappeared.Using the faster Resistant heating equipment of thermal response speed, each is segmented in incubator
The temperature in portion can be shown on temperature display meter, can detect the temperature inside each segmentation incubator in real time
Degree, reaches the optimal stretch wrap forming temperature of profile.Profile is used from resistance heating, is insulated between profile and clamp with collets.
To sum up, the present invention realizes the sectional temperature-controlled control shape multiple spot Three Dimensional Thermal stretch bending of mental section.
From the above mentioned, the present invention solves the problems, such as that current three-dimensional bending field is insoluble as follows:
(1) the multiple spot Three Dimensional Thermal stretch wrap forming of mental section is realized；
(2) problem low for integral heat insulation case high energy consumption and efficiency devises the segmentation incubator with independent heat preservation property,
And it realizes and is kept the temperature for the independent of each forming unit；
(3) big for integral heat insulation box space and cause thermometric not accurate enough and there is time delay, devise that quantity is more, space is small
Segmentation incubator, more accurately heating and thermometric.
Detailed description of the invention
A kind of Fig. 1: Three Dimensional Thermal stretch wrap forming apparatus structure schematic diagram of segmentation control shape temperature control.
Fig. 2: multiple spot Three Dimensional Thermal stretch bending is servo-actuated forming device structural schematic diagram.
Fig. 3: three-dimensional bending forming device structural schematic diagram when without segmentation incubator.
Fig. 4: segmentation incubator structural schematic diagram.
Fig. 5: shaping element configuration schematic diagram.
Fig. 6: horizontal pin shaft structural schematic diagram.
In figure: 1. pedestals, 2. segmentation incubators, 3. forming units, 4. hydraulic cylinder brackets, 5. hydraulic cylinders, 6. pistons
Bar, 7. transformers, 8. temperature control cabinets, 9. asbestos gauges, 10. high-temperature flexible cutting means enclosures, 11. clamps, 12. collets, 13. types
Material, 14. thermocouples, 15. resistance wires, 16. height limit cushion blocks, 17. brackets, 18. bolts, 19. forming unit backboards, 20. is high
Degree gag lever post, 21. forming unit top plates, 22. slide block guide rails, 23. vertical pin shafts, 24. forming face bottom plates, 25. forming faces, 26.
Sliding block, 27. horizontal pin shafts.
Specific embodiment
Present embodiment is illustrated in conjunction with attached drawing and embodiment
A kind of Three Dimensional Thermal stretch wrap forming device of segmentation control shape temperature control, which is characterized in that by pedestal 1, segmentation incubator 2, forming
Unit 3, hydraulic cylinder bracket 4, hydraulic cylinder 5, transformer 7, temperature control cabinet 8 form.Wherein, forming unit 3 is mounted on bottom
On seat 1, segmentation incubator 2 is mounted on the slide block guide rail 22 of forming unit 3, and the piston rod 6 and forming unit of hydraulic cylinder 5 are carried on the back
Plate 19 is fixedly connected, and segmentation incubator 2 and forming unit 3 can be adjacent under the action of hydraulic cylinder 5 along 1 longitudinal sliding motion of pedestal
The opening for being segmented incubator 2 is connected by high-temperature flexible cutting means enclosure 10, and the segmentation incubator 2 of close 11 two sides of clamp is opened
It is closed at mouthful with asbestos gauge 9, the size that asbestos gauge 9 is open is depending on the area of section of profile 13 and curved shape.Profile 13
Using from resistance heating, it is connect by cable with transformer 7.Make to insulate between clamp 11 and profile 13 using collets 12, temperature
Control cabinet 8 controls thermocouple 14 and resistance wire 15 by cable to control the temperature of segmentation incubator 2.
Forming unit 3 and segmentation incubator 2 are the independent heat preservation of trailing type, and segmentation incubator 2 is mounted on forming unit 3
On slide block guide rail 22, moved together under the action of hydraulic cylinder 5, and positioned by hydraulic cylinder 5.
Pedestal 1 is L shape, is provided with several T-slots along longitudinal direction, hydraulic cylinder 5 is mounted on pedestal 1 and hydraulic cylinder bracket 4
On.
Segmentation incubator 2 is cabinet, inside installation thermocouple 14 and resistance wire 15, for surveying mild heat.Segmentation heat preservation
The wall surface of case 2 adds the structure of metal shell using insulating layer, wherein heat preservation layer material uses mullite fiber plate, metal shell material
Material uses heat-resistance stainless steel.
Forming unit backboard 19 and slide block guide rail 22 are mounted on bracket 17 by bolt 18, height limit bar 20 and height
Limiting cushion block 16 limits the displacement of sliding block 26, and sliding block 26 is connect with forming face bottom plate 24 by vertical pin shaft 23, forming face bottom plate
24 can rotate around vertical pin shaft 23, and forming face bottom plate 24 is connect with forming face 25 by horizontal pin shaft 27, and forming face 25 can be around water
Flat-sale axis 27 rotates, and forming unit 3 can be along the T-slot longitudinal sliding motion of pedestal 1.
Temperature control cabinet 8 is cabinet type structure, is equipped with several temperature display meters on control panel, each temperature is aobvious
Show that instrument corresponds to the thermocouple 14 in different segmentation incubators 2, can intuitively read inside each segmentation incubator 2
Temperature.
Transformer 7 is customized as required product, and input terminal is AC power source, and output end is straight within safe voltage
Galvanic electricity source.
Profile 13 is powered from transformer 7 to profile 13 from resistance heating, has collets 12 at 13 both ends of profile, for completely cutting off
Profile 13 and clamp 11.
When processing the workpiece, it can increase accordingly or reduce according to the actual situation forming unit number.
Embodiment one, by taking rectangular section titanium alloy profile hot-drawn is curved as an example, a kind of Three Dimensional Thermal stretch bending of segmentation control shape temperature control
The forming process of forming device, the specific steps are as follows:
The first step, target part are projected out one section of circular arc respectively in horizontal and vertical plane, calculate both horizontally and vertically
On bending parameters, and determine use forming unit quantity, and determine segmentation incubator in asbestos gauge openings of sizes, meter
Calculate the piston rod extension elongation of hydraulic cylinder；
Second step, Manual height gag lever post adjust height limit cushion block, segmentation incubator are mounted on the cunning of forming unit
On block guide rail, hydraulic cylinder is installed, forming unit and segmentation incubator are installed on pedestal, and make the piston rod of hydraulic cylinder with
Forming unit backboard is fixedly connected, and adjusts each forming unit and segmentation incubator point-blank with hydraulic cylinder；
Third step installs high-temperature flexible cutting means enclosure, and profile is passed through forming unit and is segmented the inside of incubator, installs asbestos
Net, profile ends put on collets, and clamp clamps collets and profile, open from resistance heating circuit, while temperature control cabinet control
Resistance wire inside system segmentation incubator carries out the heating of segmentation incubator internal environment, and carries out thermometric by thermocouple, sees
The reading in the instrument of temperature control cabinet is examined, temperature is made to reach preset value；
4th step, stretch bending forming process: forming unit and segmentation incubator are under the action of hydraulic cylinder, along pedestal T
Type groove direction is mobile, is moved to stop point and stops movement, while during forming unit and mobile segmentation incubator, folder
Clamping band profile to be moved in identical speed horizontal direction, after forming unit and segmentation incubator stop mobile, clamp band
Profile continue to move to, profile is gradually bonded with forming face, carry out the stretch wrap forming of horizontal direction, after, clamp is with type
Moved on material vertical direction, carry out the stretch wrap forming of vertical direction, after, keep clamp it is motionless, using segmentation incubator into
Row heat preservation, the detection of temperature control cabinet are segmented the temperature inside incubator；
5th step after keeping the temperature the predetermined time by technique requirement, closes transformer, and profile after natural cooling, unloads stone in air
Cotton net can both manually take out profile, forming unit and segmentation incubator be moved back to initial position using hydraulic cylinder, thus
The hot-drawn for completing a rectangular section titanium alloy profile multiple spot three-dimensional is curved.
Claims (8)
1. it is a kind of segmentation control shape temperature control Three Dimensional Thermal stretch wrap forming device, which is characterized in that by pedestal 1, segmentation incubator 2, at
Shape unit 3, hydraulic cylinder bracket 4, hydraulic cylinder 5, transformer 7, temperature control cabinet 8 form；Wherein, forming unit 3 is mounted on
On pedestal 1, segmentation incubator 2 is mounted on the slide block guide rail 22 of forming unit 3, the piston rod 6 and forming unit of hydraulic cylinder 5
Backboard 19 is fixedly connected, and segmentation incubator 2 and forming unit 3 can be under the action of hydraulic cylinder 5 along 1 longitudinal sliding motion of pedestal, phase
The opening of neighbour's segmentation incubator 2 is connected by high-temperature flexible cutting means enclosure 10, the segmentation incubator 2 of close 11 two sides of clamp
Opening is closed with asbestos gauge 9, and the size that asbestos gauge 9 is open is depending on the area of section of profile 13 and curved shape；Profile
13, using from resistance heating, are connect by cable with transformer 7；Make to insulate between clamp 11 and profile 13 using collets 12, temperature
Degree control cabinet 8 controls thermocouple 14 and resistance wire 15 by cable to control the temperature of segmentation incubator 2.
2. a kind of Three Dimensional Thermal stretch wrap forming device of segmentation control shape temperature control according to claim 1, it is characterised in that: forming
Unit 3 and segmentation incubator 2 are the independent heat preservation of trailing type, and segmentation incubator 2 is mounted on the slide block guide rail 22 of forming unit 3
On, it is moved together under the action of hydraulic cylinder 5, and positioned by hydraulic cylinder 5.
3. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: pedestal 1
For L shape, it is provided with several T-slots along longitudinal direction, hydraulic cylinder 5 is mounted on pedestal 1 and hydraulic cylinder bracket 4.
4. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: segmentation is protected
Incubator 2 is cabinet, inside installation thermocouple 14 and resistance wire 15, for surveying mild heat；The wall surface of incubator 2 is segmented using guarantor
Warm layer adds the structure of metal shell, wherein heat preservation layer material uses mullite fiber plate, metal shell material is using heat-resisting stainless
Steel.
5. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: forming is single
First backboard 19 and slide block guide rail 22 are mounted on bracket 17 by bolt 18, and height limit bar 20 and height limit cushion block 16 limit
The displacement of sliding block 26, sliding block 26 are connect with forming face bottom plate 24 by vertical pin shaft 23, and forming face bottom plate 24 can be around vertical pin shaft
23 rotations, forming face bottom plate 24 are connect with forming face 25 by horizontal pin shaft 27, and forming face 25 can be rotated around horizontal pin shaft 27, at
Shape unit 3 can be along the T-slot longitudinal sliding motion of pedestal 1.
6. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: temperature control
Cabinet 8 processed is cabinet type structure, is equipped with several temperature display meters on control panel, each temperature display meter corresponds to not
With the thermocouple 14 in segmentation incubator 2, the temperature inside each segmentation incubator 2 can be intuitively read.
7. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: transformer
7 be customized as required product, and input terminal is AC power source, and output end is the DC power supply within safe voltage.
8. the Three Dimensional Thermal stretch wrap forming device of a kind of segmentation control shape temperature control according to claim 1, it is characterized in that: profile 13
It is heated from resistance, is powered from transformer 7 to profile 13, have collets 12 at 13 both ends of profile, for completely cutting off profile 13 and clamp 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910292429.5A CN109821944B (en) | 2019-04-12 | 2019-04-12 | Three-dimensional hot stretch bending forming device with sectional shape control and temperature control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292429.5A CN109821944B (en) | 2019-04-12 | 2019-04-12 | Three-dimensional hot stretch bending forming device with sectional shape control and temperature control |
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| CN109821944B CN109821944B (en) | 2024-03-22 |
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| CN110976581A (en) * | 2019-11-13 | 2020-04-10 | 北京航空航天大学 | Heat preservation tool for hot stretch bending of section bar |
| CN113560381A (en) * | 2021-07-27 | 2021-10-29 | 北京航空航天大学 | Large-section titanium alloy profile high-temperature creep forming tool and using method thereof |
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