CN104438845A - Simple hot forming die and method for large inner hole flanging of high-strength titanium-alloy material - Google Patents
Simple hot forming die and method for large inner hole flanging of high-strength titanium-alloy material Download PDFInfo
- Publication number
- CN104438845A CN104438845A CN201410691015.7A CN201410691015A CN104438845A CN 104438845 A CN104438845 A CN 104438845A CN 201410691015 A CN201410691015 A CN 201410691015A CN 104438845 A CN104438845 A CN 104438845A
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- China
- Prior art keywords
- die
- blank
- upper bolster
- blank holder
- counterdie
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Abstract
The invention discloses a simple hot forming die and method for a large inner hole flanging of a high-strength titanium-alloy material. The simple hot forming die for the large inner hole flanging of the high-strength titanium-alloy material comprises an upper die base, a male die, discharging screws, an edge pressing ring, positioning pins, a lower die and hoisting screws, wherein the male die is fixed to the upper die base, the edge pressing ring is hoisted to the upper die base through the discharging screws, and the discharging screws can move up and down in the upper die base. The die is fixed in a hot forming pressure machine and is heated to the forming temperature required by the technology, a blank to be formed is flat placed on the lower die base, an upper platform moves downwards to achieve die assembly, the edge pressing ring makes contact with the blank firstly, the upper platform moves downwards continuously, a material in a deformation area is pressed in a lower die cavity gradually by the male die, and then the flanging is formed. The die and method are suitable for simple hot forming of flangings of metal materials such as high-strength titanium alloy.
Description
Technical field
The invention belongs to panel beating and hot-working field, relate to a kind of simple and easy thermo shaping method of large scale inside port blockage of high-strength titanium alloy material, it is applicable to the precision form of the metal material reinforcement class parts such as Aero-Space high-strength titanium alloy.
Background technology
Current, the lightweight of Aerospace Products parts forward, complicated and integration future development,, wherein for making the binding site or the rigidity in order to improve part that assemble with other parts, there is many flange class parts in increasing employing large scale complex profile thin-wall member.And the metal materials such as titanium alloy are owing to having, and density is little, intensity is high, and there is the outstanding advantages such as good heat-resisting, corrosion resistance, become the ideal structure material in Aero-Space leading-edge field.But due to titanium alloy performance characteristics, the resistance of deformation under common molding condition is large, elastic modelling quantity is little, after cold-press moulding resilience serious, cold forming processing flange is very difficult.Such parts many are as product important feature part, for its larger-size design feature, when hot forming flange, in order to prevent wrinkling warpage, require that thermal pressure machine must with ejecting hold down gag, or on hot-forming die, design spring attachment, cause the high requirement to equipment and mold, improve the processing cost of part.How on ordinary hot press equipment, do not increasing die cost, when not improving operative's difficulty, utilizing mould self structure, solving a flanging difficult problem, produce qualified large scale inside port blockage class part particularly necessary.
" large scale " alleged in the present invention, it is containing meaning: flange plane outside dimension is between ￠ 200mm ~ ￠ 500mm, and internal diameter size is between ￠ 100mm ~ ￠ 300mm, and part wall thickness is the situation of 1mm ~ 3mm.
High-strength titanium alloy material refers to: compared with common alloy of titanium, and intensity is higher, and high-temperature behavior is better, and serviceability temperature can reach 816 DEG C, and oxidation resistance is strong, and creep-resistant property is good, and the titanium alloy material that weight ratio common alloy of titanium is lighter.But because it belongs to difficult-to-deformation material, its structure and properties is very responsive to hot-working condition, thermoforming temperatures requires between 850 ~ 880 DEG C.
Summary of the invention
The present invention discloses a kind of simple and easy thermo shaping method of high-strength titanium alloy material large scale inside port blockage, has been come by a set of hot-forming die.Be intended to overcome when ordinary hot process for stamping is shaped and hold down gag, deficiency that production cost is high are ejected to former and mould requirement increase, there is provided a kind of and reduce production difficulty, save production cost, and effectively ensure mould and the method for the accurate flanging forming of part.
Technical scheme of the present invention is as follows:
A simple and easy thermo shaping method for high-strength titanium alloy material large scale inside port blockage, has been come by a set of hot-forming die.
This mould comprises upper bolster, punch, unloading bolt, blank holder, alignment pin, counterdie and lifting screw; Punch is fixed on upper bolster; Blank holder is lifted on upper bolster by unloading bolt, and unloading bolt can move up and down in upper bolster, and lifting screw is arranged on upper bolster and counterdie respectively; Alignment pin is installed on counterdie.
Simple and easy thermo shaping method, comprises the steps:
1) mould is fixed in thermoforming forcing press and heats, and is warmed to the forming temperature of technological requirement,
2) blank to be formed is lain in die shoe, by alignment pin determination placement location,
3) in the downward matched moulds process of upper mounting plate, first the blank holder be lifted on upper bolster contacts blank; Now blank is subject to the impact of pressure-pad-force, prevents wrinkling warpage;
4) upper mounting plate continues descending, and punch progressively by deformed area material press-in counterdie die cavity, completes flanging forming.
On technique scheme basis, further,
The 1st) in step, forming temperature is 850 ~ 880 DEG C;
The 3rd) in step, after first blank holder contacts blank, blank holder stops descending, pushes down blank by its deadweight;
The 4th) in step, punch is progressively by after deformed area material press-in counterdie die cavity, and described unloading bolt moves upward in upper bolster, when the lower plane of upper bolster and the upper plane of blank holder are fitted, makes mould be in closure state;
The 4th) in step, after described flanging forming, upper mounting plate stop motion, terminates after meeting technological requirement heat-insulation pressure keeping time conditions.
Beneficial effect of the present invention:
By unloading bolt, blank holder is lifted on upper bolster; utilize the change of unloading bolt position on upper bolster in lifting platform process; conversion platform pressure; when punch does not also touch shaping blank; reach the effect deadweight of blank holder being converted to pressure-pad-force, overcome the wrinkling buckling deformation of part plane, thus reduce the requirement to former; simplify mould structure, reach shaping object.Avoid in hot procedure, flange requires configuration liftout attachment to machine tool or on mould, increases the requirements such as high temperature spring device.Mould of the present invention and method, can overcome when ordinary hot process for stamping is shaped and hold down gag is ejected to former and mould requirement increase, thus improve production difficulty, add the shortcoming of production cost, effectively ensure the accurate flanging forming of the metal material reinforcement class parts such as Aero-Space high-strength titanium alloy.The part quality controllability processed and good stability, highly versatile, passing rate of processing is high.
Accompanying drawing explanation
The present invention has 3 width accompanying drawings.
Fig. 1, typical inside port blockage part and process part processing appearance schematic diagram;
A) typical inside port blockage part, b) process part processing
Fig. 2, hot-forming die general structure schematic diagram
The top view of Fig. 3, Fig. 2
Fig. 4, hot-forming die structure cross-sectional schematic
Hot-forming die general structure schematic diagram under Fig. 5, flanging state
Hot-forming die general structure schematic diagram under Fig. 6, matched moulds state
In figure, mark represents: 1 upper bolster, 2 hexagon socket head cap screws, 3 punch, 4 unloading bolts, 5 blank holders, 6 alignment pins, 7 counterdies, 8 lifting screws
Detailed description of the invention
Below, by reference to the accompanying drawings and specific embodiment, invention is further described.
This titanium alloy component is a kind of typical inside port blockage part, material is Ti2AlNi, its geomery is as Fig. 1-a) shown in, its physical dimension is ￠ 338mm, hole size ￠ 260mm, flange height 18mm, angle 14 °, Fig. 1-b is depicted as process part processing appearance schematic diagram, and it is the annulus of external diameter ￠ 338mm, internal diameter ￠ 230mm as calculated.
As Fig. 2,3 and 4, hot-forming die, comprising: upper bolster 1, be fixed on the punch 3 on upper bolster by hexagon socket head cap screw 2, be lifted on blank holder 5,2 alignment pins 6 on upper bolster by unloading bolt 4, counterdie 7 and lifting screw 8, unloading bolt can move up and down in upper bolster.
1, be first fixed in thermoforming forcing press by this mould and heat, after mould is warmed to the forming temperature of technological requirement in thermal pressure machine, specific to the present embodiment, for Ti2AlNi, this forming temperature is 850 ~ 880 DEG C;
2, blank to be formed is put into counterdie 7, determine placement location by alignment pin 6;
3, now thermal pressure machine upper mounting plate is descending, and as shown in Figure 5, when blank holder 5 lower plane touches blank, blank holder 5 stops descending, pushes down blank by its deadweight;
4, upper mounting plate continues descending, and now punch 3 is advanced into counterdie 7 die cavity under continuing, and unloading bolt 4 moves upward in upper bolster 1, when the lower plane of upper bolster 1 and the upper plane of blank holder 5 are fitted, makes mould be in closure state, upper mounting plate stop motion;
5, as shown in Figure 6, at blank holder 5, under the acting in conjunction of punch 3 and counterdie 7, part is close to mold cavity shaping and is put in place, after the heat-insulation pressure keeping time conditions of technological requirement completes, and the up die sinking of upper mounting plate, due to the effect of blank holder 5, after being shaped, counterdie 7 stayed by part, when mould is opened to Fig. 2 position, taken out by part from side.
The foregoing is only better possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore the equivalence change that every utilization description of the present invention and accompanying drawing content are done, be all contained in protection scope of the present invention.
Claims (6)
1. a simple and easy hot-forming die for high-strength titanium alloy material large scale inside port blockage, comprises upper bolster, punch, unloading bolt, blank holder, alignment pin, counterdie and lifting screw; Punch is fixed on upper bolster; Blank holder is lifted on upper bolster by unloading bolt, and unloading bolt can move up and down in upper bolster, and lifting screw is arranged on upper bolster and counterdie respectively, and alignment pin is installed on counterdie.
2. a simple and easy thermo shaping method for high-strength titanium alloy material large scale inside port blockage, has been come by mould according to claim 1, has comprised the steps:
1) mould is fixed in thermoforming forcing press and heats, and is warmed to the forming temperature of technological requirement;
2) blank to be formed is lain in die shoe, by alignment pin determination placement location;
3) in the downward matched moulds process of upper mounting plate, first the blank holder be lifted on upper bolster contacts blank;
4) upper mounting plate continues descending, and punch progressively by deformed area material press-in counterdie die cavity, completes flanging forming.
3. according to thermo shaping method described in claim 2, it is characterized in that, the 1st) in step, forming temperature is 850 ~ 880 DEG C.
4. according to thermo shaping method described in claim 2, it is characterized in that, the 3rd) in step, after first blank holder contacts blank, blank holder stops descending, pushes down blank by its deadweight.
5. according to thermo shaping method described in claim 2, it is characterized in that, the 4th) in step, punch is progressively by after deformed area material press-in counterdie die cavity, described unloading bolt moves upward in upper bolster, when the lower plane of upper bolster and the upper plane of blank holder are fitted, makes mould be in closure state.
6. according to thermo shaping method described in claim 2, it is characterized in that, the 4th) in step, after described flanging forming, upper mounting plate stop motion, terminates after meeting technological requirement heat-insulation pressure keeping time conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691015.7A CN104438845A (en) | 2014-11-26 | 2014-11-26 | Simple hot forming die and method for large inner hole flanging of high-strength titanium-alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691015.7A CN104438845A (en) | 2014-11-26 | 2014-11-26 | Simple hot forming die and method for large inner hole flanging of high-strength titanium-alloy material |
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|---|---|
| CN104438845A true CN104438845A (en) | 2015-03-25 |
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| CN201410691015.7A Pending CN104438845A (en) | 2014-11-26 | 2014-11-26 | Simple hot forming die and method for large inner hole flanging of high-strength titanium-alloy material |
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| CN (1) | CN104438845A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841766A (en) * | 2015-04-28 | 2015-08-19 | 什邡市明日宇航工业股份有限公司 | Composite thermoforming mould of titanium alloy part and thermoforming method applying mould |
| CN105710256A (en) * | 2016-03-18 | 2016-06-29 | 燕山大学 | Forming method for aluminum alloy wallboards of high-speed trains |
| CN110394401A (en) * | 2019-08-29 | 2019-11-01 | 洛阳Lyc轴承有限公司 | A kind of shaping methods and shaping mould of high-carbon chromium steel thin-wall bearing ferrule |
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| CN203030692U (en) * | 2012-10-15 | 2013-07-03 | 成都豪能科技股份有限公司 | Small round corner reshaping device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841766A (en) * | 2015-04-28 | 2015-08-19 | 什邡市明日宇航工业股份有限公司 | Composite thermoforming mould of titanium alloy part and thermoforming method applying mould |
| CN104841766B (en) * | 2015-04-28 | 2016-11-09 | 四川明日宇航工业有限责任公司 | The compound thermal shaping dies of titanium alloy component and use the thermo shaping method of this mould |
| CN105710256A (en) * | 2016-03-18 | 2016-06-29 | 燕山大学 | Forming method for aluminum alloy wallboards of high-speed trains |
| CN110394401A (en) * | 2019-08-29 | 2019-11-01 | 洛阳Lyc轴承有限公司 | A kind of shaping methods and shaping mould of high-carbon chromium steel thin-wall bearing ferrule |
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Application publication date: 20150325 |
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