CN109848277A - A kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process - Google Patents
A kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process Download PDFInfo
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- CN109848277A CN109848277A CN201910039520.6A CN201910039520A CN109848277A CN 109848277 A CN109848277 A CN 109848277A CN 201910039520 A CN201910039520 A CN 201910039520A CN 109848277 A CN109848277 A CN 109848277A
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- tripod
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- clamp
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to Plastic Forming processing technique field, it is related to a kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process.The device includes bottom plate, tripod, clamp, main shaft, three sections of spacers, buckle and stretches half module；Tripod symmetry arrangement is connect in bottom plate two sides, level right angle side with base thread, and vertical right-angle side is coupled with main shaft；It is fixedly connected in the middle part of vertical right-angle side with three sections of spacers；Buckle can be around main axis；The otic placode of clamp both ends and buckle is bolted；By plate end be clamped in clamp；The punch-pin that half module lower end is Double curve degree is stretched, the hot-stretch forming for realizing plate close to plate is moved downward.The invention belongs to half contour forming, shaping dies quantity reduces half, and fixture has versatility；It shapes precision to improve, reducing reflected rate controls Reducing thickness；The cumbersome process such as heat treatment are omitted, controlling unit simplifies, and reduces the waste of the energy and material, shortens the lead time, improves the quality stability of product.
Description
Technical field
The invention belongs to Plastic Forming processing technique field, it is related to a kind of titanium alloy plate hot-stretch fixture for forming and forming
Method.
Background technique
Titanium alloy is for mitigating aircraft overall structure weight, improving structure design efficiency, improvement structural reliability, raising machine
Body life time meets high temperature and high carries and corrosive environment requirement etc. can play a significant role.Titanium alloy cold state at
Shape is difficult, mostly uses isothermal thermal forming and SPF Technology, but the titanium of complex-shaped Double curve degree as shown in Figure 1 is closed
Golden skin part, forming when there are the problem of include:
(1) according to isothermal thermal forming, punching press or drawing as under Warm status, be all rigid die forming, material by
Force flow is dynamic uneven, generates the risk of the fold or rupture that cannot exclude.
(2) using the method welded again of segmentation hot forming, fixture for forming quantity is more, the part that is segmented carries out hot forming respectively
Process causes the energy and waste of material；Multiple tracks curve welding sequence is carried out after single part forming, welding tooling quantity is more, side
Edge weld seam needs accurate grinding process, and needs the quality of x-ray examination guarantee curved surface seam；Refill be clipped in heat treatment tooling into
Row heat treatment removal welding interior stress.The entire process-cycle is long, and quality stability is not easy to control, at high cost.
(3) local reduction will cause using superplastic forming again and lead excessively high phenomenon.Superplastic forming has intrinsic advantage, but subtracts
The control of thin rate is still technological difficulties.
Summary of the invention
In view of the problems of the existing technology, the present invention proposes a kind of hot-stretch fixture for forming and manufacturing process, realizes double
The forming of curvature titanium alloy covering part effectively avoids being thinned and the drawbacks of fold.By dedicated clamping device, covering is clamped
Plate both ends, it is uniform in isothermal thermal forming equipment according to the theory combination titanium alloy thennoforming performance of skin stretch forming technique
Hot conditions under realize titanium alloy covering part heating stretch forming, make part in the lower yield strength of the condition of high temperature
Under, mold shapes under action of pulling stress.
The technical solution of the present invention is as follows:
A kind of titanium alloy plate hot-stretch fixture for forming, including bottom plate 1, tripod 2, clamp 3,4, three sections of spacers 5 of main shaft,
Buckle 6 and stretching half module 8；
The tripod 2 is right-angle triangle, and totally eight, middle part hollow out, symmetry arrangement is same in 1 two sides of bottom plate
2 uniform intervals of tripod of side are arranged, and the level right angle side of tripod 2 is threadedly coupled with bottom plate 1, the vertical right angle of tripod 2
Side upper end is equipped with circular hole, and main shaft 4 sequentially passes through circular hole, realizes the fixation on 2 top of tripod；In the vertical right-angle side of tripod 2
Portion is equipped with through-hole, and three sections of spacers 5 sequentially pass through through-hole, achieve a fixed connection, and guarantees gap and the depth of parallelism of every side tripod 2；
The buckle 6 is made of two fixture blocks, and fixture block is equipped with centre bore, and fixture block lower end is equipped with auricle with threaded hole, and two
The auricle of fixture block is staggered relatively, and centre is for placing clamp 3；The centre bore for buckling 6 fixture blocks covers between every two tripod 2
On main shaft 4, it can be rotated around main shaft 4；The clamp 3 be equipped with threaded hole, both ends respectively with buckle 6 two fixture blocks auricle bolt
Connection；
It is added at 7 both ends of plate to be tensioned and thickens item 9, carry out spot welding by thickening solder joint 10 uniformly densely covered on item 9
Processing；7 end of plate thickened stabilization is clamped in inside clamp 3；
It is described to stretch the punch-pin that 8 lower end of half module is Double curve degree, it moves up and down under the driving of equipment upper mounting plate, stretches half
When mould 8 is moved downward close to plate 7, clamp 3 generates negative drawing power, realizes the hot-stretch forming of plate 7.
A kind of manufacturing process of titanium alloy plate hot-stretch fixture for forming, steps are as follows:
Step 1, the both ends of the pre- bent plate material 7 of 3 stable holding of clamp make to stretch half module downlink contact plate mold when forming
After generate enough pulling force, enable plate that a small amount of plastic deformation occurs；
Stretching half module 8 used in stretch forming is installed on the upper mounting plate of isothermal thermal forming equipment, in Isothermal Hot by step 2
Under the hot environment that the uniform titanium alloy forming technology of former requires, stretched using the driving that moves downward of equipment upper mounting plate
8 downlink of half module；
Step 3 carries out short creep school shape, realizes the online stress relaxation of Warm status, improves forming accuracy.
Beneficial effects of the present invention:
(1) belong to half contour forming, shaping dies quantity reduces half, and fixture has certain versatility.Material is at high temperature
Uniform Flow is attached at punch-pin, and forming precision improves, and reducing reflected rate controls Reducing thickness, improves part quality.
(2) the drawbacks of avoiding welding after complicated Double curve degree part sectional forming omits the cumbersome process such as heat treatment, control
Link simplifies, and can reduce the waste of the energy and material, shortens the lead time, improves the quality stability of product.
(3) it can be used as the preform transition process of complex parts, prefabricated blank can be provided for forming eventually, with superplastic forming knot
It closes, had not only controlled thinning rate, but also formable labyrinth type face, and given full play to respective advantage；It can also be with the compacting of rigid die
In conjunction with forming Similarity of Local Characteristic Structure.
(4) a kind of new thought is proposed for the forming technology of metal plate, both can enrich existing process means with energy efficiency,
The forming of highly difficult part can be made to become possible in conjunction with prior art again, provide more spaces and remaining for the design of part
Degree.
Detailed description of the invention
Fig. 1 is Double curve degree titanium alloy covering part schematic diagram；
Fig. 2 is frock clamp overall structure diagram；
Fig. 3 is that the spot welding of plate both ends thickens processing schematic；
Fig. 4 is that plate is held on clamp schematic internal view；
In figure: 1 bottom plate；2 tripods；3 clamps；4 main shafts；5 three sections of spacers；6 buckles；7 plates；8 stretch half module；9 thicken
Item；10 solder joints.
Specific embodiment
Below in conjunction with attached drawing and technical solution, specific embodiments of the present invention are further illustrated.
As shown in Fig. 2, a kind of titanium alloy plate hot-stretch fixture for forming, including bottom plate 1, tripod 2, clamp 3, main shaft 4,
Three sections of spacers 5, buckle 6 and stretching half module 8；
The tripod 2 is right-angle triangle, and totally eight, middle part hollow out, symmetry arrangement is same in 1 two sides of bottom plate
2 uniform intervals of tripod of side are arranged, and the level right angle side of tripod 2 is threadedly coupled with bottom plate 1, the vertical right angle of tripod 2
Side upper end is equipped with circular hole, and main shaft 4 sequentially passes through circular hole, realizes the fixation on 2 top of tripod；In the vertical right-angle side of tripod 2
Portion is equipped with through-hole, and three sections of spacers 5 sequentially pass through through-hole, achieve a fixed connection, and guarantees gap and the depth of parallelism of every side tripod 2；
The buckle 6 is made of two fixture blocks, and fixture block is equipped with centre bore, and fixture block lower end is equipped with auricle with threaded hole, and two
The auricle of fixture block is staggered relatively, and centre is for placing clamp 3；The centre bore for buckling 6 fixture blocks covers between every two tripod 2
On main shaft 4, it can be rotated around main shaft 4；The clamp 3 be equipped with threaded hole, both ends respectively with buckle 6 two fixture blocks auricle bolt
Connection；
It is added at 7 both ends of plate to be tensioned and thickens item 9, carry out spot welding by thickening solder joint 10 uniformly densely covered on item 9
Processing；7 end of plate thickened stabilization is clamped in inside clamp 3；
It is described to stretch the punch-pin that 8 lower end of half module is Double curve degree, it moves up and down under the driving of equipment upper mounting plate, stretches half
When mould 8 is moved downward close to plate 7, clamp 3 generates negative drawing power, realizes the hot-stretch forming of plate 7.
A kind of manufacturing process of titanium alloy plate hot-stretch fixture for forming, steps are as follows:
Step 1, the both ends of the pre- bent plate material 7 of 3 stable holding of clamp make to stretch half module downlink contact plate mold when forming
After generate enough pulling force, enable plate that a small amount of plastic deformation occurs；
Stretching half module 8 used in stretch forming is installed on the upper mounting plate of isothermal thermal forming equipment, in Isothermal Hot by step 2
Under the hot environment that the uniform titanium alloy forming technology of former requires, stretched using the driving that moves downward of equipment upper mounting plate
8 downlink of half module；
Step 3 carries out short creep school shape, realizes the online stress relaxation of Warm status, improves forming accuracy.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (2)
1. a kind of titanium alloy plate hot-stretch fixture for forming, which is characterized in that the titanium alloy plate hot-stretch fixture for forming
Including bottom plate (1), tripod (2), clamp (3), main shaft (4), three sections of spacers (5), buckle (6) and stretch half module (8)；
The tripod (2) is right-angle triangle, and totally eight, middle part hollow out, symmetry arrangement is same in bottom plate (1) two sides
Tripod (2) uniform intervals of side are arranged, and the level right angle side of tripod (2) is threadedly coupled with bottom plate (1), tripod (2)
Vertical right-angle side upper end is equipped with circular hole, and main shaft (4) sequentially passes through circular hole, realizes the fixation on tripod (2) top；Tripod (2)
Vertical right-angle side in the middle part of be equipped with through-hole, three sections of spacers (5) sequentially pass through through-hole, achieve a fixed connection, and guarantee every side tripod
(2) gap and the depth of parallelism；
The buckle (6) is made of two fixture blocks, and fixture block is equipped with centre bore, and fixture block lower end is equipped with auricle with threaded hole, two cards
The auricle of block is staggered relatively, and centre is for placing clamp (3)；Buckle (6) fixture block centre bore cover every two tripod (2) it
Between main shaft (4) on, can be rotated around main shaft (4)；The clamp (3) is equipped with threaded hole, and both ends are blocked with buckle (6) two respectively
The auricle of block is bolted；
It is added at plate (7) both ends to be tensioned and thickens item (9), carried out by thickening solder joint (10) uniformly densely covered on item (9)
Spot welding processing；The plate thickened (7) end is stablized and is clamped in clamp (3) inside；
It is described to stretch the punch-pin that half module (8) lower end is Double curve degree, it moves up and down under the driving of equipment upper mounting plate, stretches half module
(8) when moving downward close to plate (7), clamp (3) generates negative drawing power, realizes the hot-stretch forming of plate (7).
2. a kind of manufacturing process of titanium alloy plate hot-stretch fixture for forming according to claim 1, which is characterized in that step
It is rapid as follows:
Step 1, the both ends of the pre- bent plate material of clamp (3) stable holding (7) make to stretch half module downlink contact plate mold when forming
After generate enough pulling force, enable plate (7) that a small amount of plastic deformation occurs；
Stretching half module (8) used in stretch forming is installed on the upper mounting plate of isothermal thermal forming equipment by step 2, Isothermal Hot at
Under the hot environment that the uniform titanium alloy forming technology of shape equipment requires, half is stretched using the driving that moves downward of equipment upper mounting plate
Mould (8) downlink；
Step 3 carries out short creep school shape, realizes the online stress relaxation of Warm status, improves forming accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039520.6A CN109848277A (en) | 2019-01-16 | 2019-01-16 | A kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039520.6A CN109848277A (en) | 2019-01-16 | 2019-01-16 | A kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109848277A true CN109848277A (en) | 2019-06-07 |
Family
ID=66894870
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039520.6A Pending CN109848277A (en) | 2019-01-16 | 2019-01-16 | A kind of titanium alloy plate hot-stretch fixture for forming and manufacturing process |
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| CN (1) | CN109848277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508660A (en) * | 2019-07-31 | 2019-11-29 | 上海航天精密机械研究所 | Titanium alloy ring shell structure cold drawing depth-vacuum thermal creep combined shaping method |
| CN110936109A (en) * | 2019-11-22 | 2020-03-31 | 西安飞机工业（集团）有限责任公司 | Large-size titanium alloy skin composite forming method |
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|---|---|---|---|---|
| CN2635811Y (en) * | 2003-07-11 | 2004-08-25 | 北京中铁建设有限公司 | Spiral type adjustable steel constructed beam clamp tool |
| US20100212392A1 (en) * | 2009-02-25 | 2010-08-26 | Joseph Alan Schier | Hot stretch forming die having distortion-minimizing characteristics |
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| CN103071715A (en) * | 2013-01-31 | 2013-05-01 | 吉林大学 | Flexible expansion shaping device for curved parts |
| CN106825183A (en) * | 2017-01-18 | 2017-06-13 | 吉林大学 | The curved surface stretch forming device of multipoint excitation control |
| CN209753757U (en) * | 2019-01-16 | 2019-12-10 | 沈阳飞机工业（集团）有限公司 | Titanium alloy plate hot stretch forming tool |
| CN113879407A (en) * | 2021-09-22 | 2022-01-04 | 北京汽车股份有限公司 | Patch board engine cover inner board, automobile and manufacturing method |
| CN218912324U (en) * | 2023-02-06 | 2023-04-25 | 中建二局第三建筑工程有限公司 | Reinforcing steel bar framework binding auxiliary frame |
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2019
- 2019-01-16 CN CN201910039520.6A patent/CN109848277A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635811Y (en) * | 2003-07-11 | 2004-08-25 | 北京中铁建设有限公司 | Spiral type adjustable steel constructed beam clamp tool |
| US20100212392A1 (en) * | 2009-02-25 | 2010-08-26 | Joseph Alan Schier | Hot stretch forming die having distortion-minimizing characteristics |
| CN101947596A (en) * | 2010-09-14 | 2011-01-19 | 上海海都化学科技有限公司 | Titanium alloy drawing machine tool and forming method |
| CN102500675A (en) * | 2011-10-13 | 2012-06-20 | 北京航空航天大学 | Hot forming tool of titanium alloy thin-wall part and machining method of hot forming tool |
| CN103071715A (en) * | 2013-01-31 | 2013-05-01 | 吉林大学 | Flexible expansion shaping device for curved parts |
| CN106825183A (en) * | 2017-01-18 | 2017-06-13 | 吉林大学 | The curved surface stretch forming device of multipoint excitation control |
| CN209753757U (en) * | 2019-01-16 | 2019-12-10 | 沈阳飞机工业（集团）有限公司 | Titanium alloy plate hot stretch forming tool |
| CN113879407A (en) * | 2021-09-22 | 2022-01-04 | 北京汽车股份有限公司 | Patch board engine cover inner board, automobile and manufacturing method |
| CN218912324U (en) * | 2023-02-06 | 2023-04-25 | 中建二局第三建筑工程有限公司 | Reinforcing steel bar framework binding auxiliary frame |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508660A (en) * | 2019-07-31 | 2019-11-29 | 上海航天精密机械研究所 | Titanium alloy ring shell structure cold drawing depth-vacuum thermal creep combined shaping method |
| CN110936109A (en) * | 2019-11-22 | 2020-03-31 | 西安飞机工业（集团）有限责任公司 | Large-size titanium alloy skin composite forming method |
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Application publication date: 20190607 |