CN110756657B - Titanium alloy columnar shell forming method - Google Patents
Titanium alloy columnar shell forming method Download PDFInfo
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- CN110756657B CN110756657B CN201910525245.9A CN201910525245A CN110756657B CN 110756657 B CN110756657 B CN 110756657B CN 201910525245 A CN201910525245 A CN 201910525245A CN 110756657 B CN110756657 B CN 110756657B
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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
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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
- B21D37/16—Heating or cooling
Abstract
The invention discloses a method for forming a titanium alloy columnar shell, and particularly relates to the field of titanium alloy equipment, wherein the method comprises a connecting plate, a first web plate is fixedly arranged at the bottom of the connecting plate, first reinforcing rib plates are fixedly arranged on two sides of the first web plate, fixed connecting plates are fixedly arranged at the bottoms of the first reinforcing rib plates and the first web plate, and a cold stamping mechanism is arranged at the bottom of each fixed connecting plate; the cold stamping mechanism comprises an upper die plate, a second web plate is fixedly arranged at the bottom of the upper die plate, second reinforcing rib plates are fixedly arranged on two sides of the second web plate, and an upper die connecting plate is fixedly arranged at the bottoms of the second reinforcing rib plates and the second web plate. According to the invention, by arranging the cold stamping mechanism and the heat setting mechanism, the forming efficiency is effectively improved, the generated fracture risk is small, the heat setting precision is good, the precision can be improved by hot forming, the fracture is not easy to occur, the uniformity of temperature is effectively improved, and the advantage of thorough stress relief is achieved.
Description
Technical Field
The invention relates to the technical field of titanium alloy equipment, in particular to a method for forming a titanium alloy columnar shell.
Background
The invention patent of patent application publication No. CN104046936A discloses a processing technology of an L-shaped titanium alloy ribbed plate capable of eliminating stress deformation. The method comprises the following steps: 1. preparing a plurality of titanium plates; 2. placing titanium plates into a furnace cavity of a vacuum furnace, wherein the distance between every two adjacent titanium plates is 20 mm; heating the titanium plate to 650-700 ℃ in a vacuum furnace in vacuum; after heat preservation is carried out for 6 hours, heating is stopped, and the temperature is cooled to be below 300 ℃; 3. adopting a laser cutting machine for blanking; 4. placing the cut titanium plate material into a low-viscosity oil environment for heating, wherein the heating temperature is 500-600 ℃; 5. directly placing a titanium plate material into a mould for forming; 6. placing the formed plate in a low-viscosity oil environment with the temperature of 500-600 ℃ to ensure the stability for 10-15 minutes; 7. and (6) cooling. In the process, the heat treatment before and after the L-shaped titanium alloy ribbed plate is formed greatly eliminates the material stress during and after the titanium alloy is formed, and has the advantages of small forming pressure, long service life of a die, one-time precision forming and the like.
However, the invention still has more defects in actual use, such as the problems of stress concentration and fracture easily occurring in the forming or circle calibration process, low forming precision, incomplete process control, uneven circle calibration heating and outward turning of the forming port in the using process of the invention.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a method for forming a titanium alloy cylindrical shell, which effectively improves forming efficiency by providing a cold stamping mechanism and a heat setting mechanism, so that the risk of fracture is low, the heat setting precision is good, the precision can be improved by heat forming, the titanium alloy cylindrical shell is not easy to fracture, the uniformity of temperature is effectively improved, and the method has the advantage of complete stress relief, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a stamping and shaping die for a titanium alloy columnar shell comprises a connecting plate, wherein a first web plate is fixedly arranged at the bottom of the connecting plate, first reinforcing rib plates are fixedly arranged on two sides of the first web plate, fixed connecting plates are fixedly arranged at the bottoms of the first reinforcing rib plates and the first web plate, and a cold stamping mechanism is arranged at the bottom of each fixed connecting plate;
the cold stamping mechanism comprises an upper die plate, a second web is fixedly arranged at the bottom of the upper die plate, second reinforcing rib plates are fixedly arranged on two sides of the second web, an upper die connecting plate is fixedly arranged at the bottoms of the second reinforcing rib plates and the second web, an upper die head is fixedly arranged at the bottom of the upper die connecting plate, a lower die is arranged at the bottom of the upper die head, screw holes are formed in the surfaces of the upper die plate and the fixed connecting plate, bolts are arranged in the screw holes, nuts are sleeved outside the bolts, the nuts are in threaded connection with the bolts, a stamping groove is formed in the surface of the lower die, and the upper die head is matched with the stamping groove.
In a preferred embodiment, a heat setting mechanism is arranged on one side of the lower die, the heat setting mechanism comprises a lower die bottom plate, a lower die longitudinal rib plate is fixedly arranged at the top of the lower die bottom plate, and lower die transverse rib plates are fixedly arranged on both sides of the lower die longitudinal rib plate.
In a preferred embodiment, first stainless steel base plates are fixedly arranged at the tops of the lower die transverse rib plate and the lower die longitudinal rib plate, reinforced H-shaped steel is fixedly arranged at one side of the lower die longitudinal rib plate, reinforced channel steel is arranged at the bottom of the reinforced H-shaped steel, and first air holes are formed in the surfaces of the lower die transverse rib plate and the lower die longitudinal rib plate.
In a preferred embodiment, a second stainless steel backing plate is arranged on the top of the first stainless steel backing plate, the cross sections of the first stainless steel backing plate and the second stainless steel backing plate are both semicircular, and the first stainless steel backing plate is matched with the second stainless steel backing plate.
In a preferred embodiment, an upper die longitudinal rib plate is fixedly arranged at the top of the second stainless steel base plate, upper die transverse rib plates are fixedly arranged on two sides of the upper die longitudinal rib plate, upper die base plates are fixedly arranged at the tops of the upper die longitudinal rib plate and the upper die transverse rib plate, and second air holes are formed in the surfaces of the upper die longitudinal rib plate and the upper die transverse rib plate.
A method for forming a titanium alloy cylindrical shell comprises the following specific steps:
step one, a cold stamping mechanism is adopted to install a connecting plate on a press sliding block, a lower die is fixed on the surface of a press basic platform and aligned, and a formed material is placed on the lower die during pressing;
step two, the press pushes the connecting plate to drive the upper die head to descend, so that the upper die head is driven to stamp the forming material, the upper die head is clamped with the stamping, the forming material is deformed, and then the forming of the semi-cylindrical shell is gradually completed through certain steps;
thirdly, mounting the upper die base plate after heat setting on a slide block of a press by adopting a heat setting mechanism, fixing the lower die base plate on the surface of a basic platform of the press and aligning the lower die base plate, driving the upper die base plate to descend by the press, and placing the formed component in the step one at a proper position between a first stainless steel base plate and a second stainless steel base plate;
and fourthly, driving a second stainless steel base plate to extrude the component through an upper die longitudinal rib plate and an upper die transverse rib plate by the upper die bottom plate, enabling the component to be located inside the first stainless steel base plate, enabling the component to be located at a proper position of the die cavity and rigidly fixing the component, then feeding the component into a furnace for stress relief treatment, correcting the shape of the component, opening a shaping die after heat treatment, taking out a workpiece for shape and size detection, and then processing the shell to a fixed size and surface treatment, thus finishing the forming work of the titanium alloy shell plate.
In a preferred embodiment, the upper die and the lower die of the stamping in the cold stamping mechanism in the first step have certain widths, and the die surface size of the cold forming component is determined by fully considering the rebound of the material.
In a preferred embodiment, the third step is to drive the heat setting mechanism by a press, fix the first stainless steel backing plate and the second stainless steel backing plate or add pressing force to the heat setting mechanism in the stress relieving process to ensure that the stainless steel backing plates have a certain pressing degree, and limit the resistance force in the stress relieving process of the component.
In a preferred embodiment, the more complete the stress relief in the fourth step, the higher the precision of the shaping mold surface, and the closer the precision of the obtained shaping member to the theoretical requirement.
The invention has the technical effects and advantages that:
by arranging a cold stamping mechanism and a hot setting mechanism, a connecting plate is arranged on a press sliding block by adopting the cold stamping mechanism, a lower die is fixed on the surface of a press basic platform and aligned, a formed material is placed on the lower die during pressing, the press pushes the connecting plate to drive an upper die head to descend so as to drive the upper die head to stamp the formed material, the upper die head is clamped with the stamping so as to deform the formed material, then the forming of a semi-cylindrical shell is gradually completed by certain steps, a hot setting mechanism is adopted, a hot-set upper die base plate is arranged on the press sliding block, the lower die base plate is fixed on the surface of the press basic platform and aligned, the press drives an upper die base plate to descend, a formed component in the step one is arranged at a proper position between a first stainless steel base plate and a second non-steel base plate, the upper die base plate drives the second stainless steel base plate to extrude the component through a rust longitudinal rib plate and an upper die, make the component be in inside first stainless steel backing plate, make the component be in the suitable position of die cavity and carry out the rigidity fixed, later advance the stove with the component and carry out the stress relief processing, and correct the component shape, open the design mould after the thermal treatment, and take out the work piece and carry out the shape size detection, later process scale and surface treatment to the casing, to this end, accomplish the fashioned work of titanium alloy shell plate promptly, adopt the shaping heat setting shaping mode of broad face cold stamping, the effectual shaping efficiency that has promoted, make the fracture risk that produces little, the heat setting precision is good, thermoforming can improve the precision, difficult fracture, effectively promote the homogeneity of temperature, the thorough advantage of stress relief has.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of a portion A of FIG. 1 according to the present invention.
Fig. 3 is a schematic view of the heat setting mechanism of the present invention.
Fig. 4 is a side view of the cold stamping mechanism of the present invention.
Fig. 5 is a perspective view of the upper die head of the present invention.
The reference signs are: 1 connecting plate, 2 first webs, 3 first deep floor, 4 fixed connection boards, 5 cold stamping mechanism, 6 go up the die panel, 7 second webs, 8 second deep floor, 9 go up the die connecting plate, 10 go up the die head, 11 bed dies, 12 screw holes, 13 bolts, 14 nuts, 15 punching press groove, 16 heat setting mechanism, 17 lower die base plate, 18 lower die longitudinal rib plate, 19 lower die transverse rib plate, 20 first stainless steel backing plate, 21 enhancement H shaped steel, 22 channel-section steel, 23 second stainless steel backing plate, 24 last die longitudinal rib plate, 25 last die transverse rib plate, 26 last die base plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The stamping and shaping die for the titanium alloy cylindrical shell shown in the attached figures 1-5 comprises a connecting plate 1, wherein a first web plate 2 is fixedly arranged at the bottom of the connecting plate 1, first reinforcing rib plates 3 are fixedly arranged on two sides of the first web plate 2, fixed connecting plates 4 are fixedly arranged at the bottoms of the first reinforcing rib plates 3 and the first web plate 2, and a cold stamping mechanism 5 is arranged at the bottom of each fixed connecting plate 4;
the cold stamping mechanism 5 comprises an upper die panel 6, wherein a second web 7 is fixedly arranged at the bottom of the upper die panel 6, second reinforcing rib plates 8 are fixedly arranged on two sides of the second web 7, upper die connecting plates 9 are fixedly arranged at the bottoms of the second reinforcing rib plates 8 and the second web 7, an upper die head 10 is fixedly arranged at the bottom of the upper die connecting plate 9, a lower die 11 is arranged at the bottom of the upper die head 10, screw holes 12 are formed in the surfaces of the upper die panel 6 and the fixed connecting plate 4, bolts 13 are arranged in the screw holes 12, nuts 14 are sleeved on the outer sides of the bolts 13, the nuts 14 are in threaded connection with the bolts 13, a stamping groove 15 is formed in the surface of the lower die 11, and the upper die head 10 is matched with the stamping groove;
a heat setting mechanism 16 is arranged on one side of the lower die 11, the heat setting mechanism 16 comprises a lower die bottom plate 17, a lower die longitudinal rib plate 18 is fixedly arranged on the top of the lower die bottom plate 17, and lower die transverse rib plates 19 are fixedly arranged on two sides of the lower die longitudinal rib plate 18;
the top parts of the lower die transverse rib plate 19 and the lower die longitudinal rib plate 18 are respectively fixedly provided with a first stainless steel base plate 20, one side of the lower die longitudinal rib plate 18 is fixedly provided with reinforced H-shaped steel 21, the bottom of the reinforced H-shaped steel 21 is provided with reinforced channel steel 22, and the surfaces of the lower die transverse rib plate 19 and the lower die longitudinal rib plate 18 are respectively provided with a first air vent;
the top of the first stainless steel backing plate 20 is provided with a second stainless steel backing plate 23, the cross sections of the first stainless steel backing plate 20 and the second stainless steel backing plate 23 are both semicircular, and the first stainless steel backing plate 20 is matched with the second stainless steel backing plate 23;
an upper die longitudinal rib plate 24 is fixedly arranged at the top of the second stainless steel backing plate 23, upper die transverse rib plates 25 are fixedly arranged on two sides of the upper die longitudinal rib plate 24, upper die bottom plates 26 are fixedly arranged at the tops of the upper die longitudinal rib plate 24 and the upper die transverse rib plates 25, and second air holes are formed in the surfaces of the upper die longitudinal rib plate 24 and the upper die transverse rib plates 25;
a method for forming a titanium alloy cylindrical shell comprises the following specific steps:
step one, a cold stamping mechanism 5 is adopted to mount a connecting plate 1 on a press sliding block, a lower die 11 is fixed on the surface of a press basic platform and aligned, and a molded material is placed on the lower die 11 during pressing;
step two, the press pushes the connecting plate 1 to drive the upper die head 10 to descend, so that the upper die head 10 is driven to punch the forming material, the upper die head 10 is clamped with the punch, the forming material is deformed, and then the forming of the semi-cylindrical shell is gradually completed through certain steps;
thirdly, mounting the upper die base plate 26 after heat setting on a slide block of a press by using a heat setting mechanism 16, fixing the lower die base plate 17 on the surface of a basic platform of the press and aligning, driving the upper die base plate 26 to descend by the press, and placing the formed component in the step one at a proper position between the first stainless steel base plate 20 and the second stainless steel base plate 23;
fourthly, the upper die base plate 26 drives the second stainless steel backing plate 23 to extrude the component through the upper die longitudinal rib plate 24 and the upper die transverse rib plate 25, so that the component is positioned in the first stainless steel backing plate 20 and is positioned at a proper position of the die cavity and is rigidly fixed, then the component is put into a furnace to be subjected to stress relief treatment, the shape of the component is corrected, a shaping die is opened after the heat treatment, a workpiece is taken out to be subjected to shape and size detection, and then the shell is subjected to machining sizing and surface treatment, so that the forming work of the titanium alloy shell plate is completed;
the upper die 10 and the lower die 11 which are stamped in the cold stamping mechanism 5 in the first step have certain widths, and the size of the die surface of the cold forming component is determined by fully considering the resilience of the material;
in the third step, the heat setting mechanism 16 is driven by a press, and the first stainless steel backing plate 20 and the second stainless steel backing plate 23 are fixed or the pressing force is added to the heat setting mechanism 16 in the stress relieving process, so that the heat setting mechanism has a certain pressing degree and limits the resistance in the stress releasing process of the component;
the more thorough the stress relief in the fourth step is, the higher the precision of the shaping die surface is, and the closer the precision of the obtained forming member is to the theoretical requirement.
The implementation mode is specifically as follows: adopting a cold stamping mechanism 5, mounting a connecting plate 1 on a press sliding block, fixing a lower die 11 on a press basic platform surface and aligning, placing a formed material on the lower die 11 during pressing, pushing the connecting plate 1 by the press to drive an upper die head 10 to descend so as to drive the upper die head 10 to stamp the formed material, clamping the upper die head 10 with the stamping so as to deform the formed material, then gradually completing the forming of a semi-cylindrical shell by a certain step, adopting a heat setting mechanism 16, mounting a heat-set upper die bottom plate 26 on the press sliding block, fixing the lower die bottom plate 17 on the press basic platform surface and aligning, driving an upper die bottom plate 26 to descend by the press, placing a formed component in one step at a proper position between a first stainless steel backing plate 20 and a second stainless steel backing plate 23, driving the second stainless steel backing plate 23 to extrude the component by the upper die bottom plate 26 through an upper die longitudinal rib plate 24 and an upper die transverse rib plate 25, make the component be in inside first stainless steel backing plate 20, make the component be in the suitable position of die cavity and carry out the rigidity fixed, later advance the stove with the component and carry out the stress relief processing, and correct the component shape, open the design mould after the thermal treatment, and take out the work piece and carry out the shape size detection, later process scale and surface treatment to the casing, to this end, accomplish the fashioned work of titanium alloy shell plate promptly, adopt the shaping heat setting shaping mode of broad face cold stamping, the effectual shaping efficiency that has promoted, make the fracture risk that produces little, the heat setting precision is good, the hot forming can improve the precision, difficult fracture, effectively promote the homogeneity of temperature, the advantage that the stress relieving is thorough has.
The working principle of the invention is as follows:
referring to the attached drawings 1-5 of the specification, by arranging a cold stamping mechanism 5 and a hot setting mechanism 16, adopting the cold stamping mechanism 5, mounting a connecting plate 1 on a press slide block, fixing a lower die 11 on the surface of a press basic platform and aligning, placing a formed material on the lower die 11 during pressing, pushing the connecting plate 1 by a press to drive an upper die head 10 to descend so as to drive the upper die head 10 to stamp the formed material, clamping the upper die head 10 with the stamping to deform the formed material, then gradually completing the forming of a semi-cylindrical shell through certain steps, adopting the hot setting mechanism 16, mounting a hot-set upper die base plate 26 on the press slide block, fixing a lower die base plate 17 on the surface of the press basic platform and aligning, driving the upper die base plate 26 to descend by the press, and placing a formed component in one step at a proper position between a first stainless steel backing plate 20 and a second stainless steel backing plate 23, go up the mould bottom plate 26 and drive second stainless steel backing plate 23 through last mould longitudinal rib plate 24 and last mould horizontal rib plate 25 and extrude the component, make the component be in inside first stainless steel backing plate 20, make the component be in the suitable position of die cavity and rigid fixation, later advance the component stove and carry out stress relief processing, and correct the component shape, open the design mould after the thermal treatment, and take out the work piece and carry out shape size detection, later process scale and surface treatment to the casing, to this end, accomplish the fashioned work of titanium alloy shell plate promptly, adopt the shaping mode of broad face cold stamping shaping heat setting, effectual shaping efficiency that has promoted, make the fracture risk that produces little, the heat setting precision is good, the hot forming can improve the precision, difficult fracture, effectively promote the homogeneity of temperature, has the thorough advantage of stress relief.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (4)
1. A method for forming a titanium alloy cylindrical shell is characterized by comprising the following steps: the stamping and shaping die for the titanium alloy cylindrical shell is used for processing, the stamping and shaping die for the titanium alloy cylindrical shell comprises a connecting plate (1), a first web (2) is fixedly arranged at the bottom of the connecting plate (1), first reinforcing rib plates (3) are fixedly arranged on two sides of the first web (2), fixed connecting plates (4) are fixedly arranged at the bottoms of the first reinforcing rib plates (3) and the first web (2), and a cold stamping mechanism (5) is arranged at the bottom of each fixed connecting plate (4);
the cold stamping mechanism (5) comprises an upper die panel (6), a second web plate (7) is fixedly arranged at the bottom of the upper die panel (6), second reinforcing rib plates (8) are fixedly arranged on two sides of the second web plate (7), upper die connecting plates (9) are fixedly arranged at the bottoms of the second reinforcing rib plates (8) and the second web plate (7), an upper die head (10) is fixedly arranged at the bottom of the upper die connecting plate (9), a lower die (11) is arranged at the bottom of the upper die head (10), screw holes (12) are arranged on the surfaces of the upper die panel (6) and the fixed connecting plate (4), a bolt (13) is arranged in the screw hole (12), a nut (14) is sleeved outside the bolt (13), the nut (14) is in threaded connection with the bolt (13), the surface of the lower die (11) is provided with a stamping groove (15), and the upper die head (10) is matched with the stamping groove (15);
a heat setting mechanism (16) is arranged on one side of the lower die (11), the heat setting mechanism (16) comprises a lower die bottom plate (17), a lower die longitudinal rib plate (18) is fixedly arranged on the top of the lower die bottom plate (17), and lower die transverse rib plates (19) are fixedly arranged on two sides of the lower die longitudinal rib plate (18);
the top parts of the lower die transverse rib plate (19) and the lower die longitudinal rib plate (18) are respectively fixedly provided with a first stainless steel base plate (20), one side of the lower die longitudinal rib plate (18) is fixedly provided with reinforced H-shaped steel (21), the bottom part of the reinforced H-shaped steel (21) is provided with reinforced channel steel (22), and the surfaces of the lower die transverse rib plate (19) and the lower die longitudinal rib plate (18) are respectively provided with a first air hole;
a second stainless steel backing plate (23) is arranged at the top of the first stainless steel backing plate (20), the cross sections of the first stainless steel backing plate (20) and the second stainless steel backing plate (23) are semicircular, and the first stainless steel backing plate (20) is matched with the second stainless steel backing plate (23);
an upper die longitudinal rib plate (24) is fixedly arranged at the top of the second stainless steel backing plate (23), upper die transverse rib plates (25) are fixedly arranged on two sides of the upper die longitudinal rib plate (24), upper die bottom plates (26) are fixedly arranged at the tops of the upper die longitudinal rib plate (24) and the upper die transverse rib plates (25), and second air holes are formed in the surfaces of the upper die longitudinal rib plate (24) and the upper die transverse rib plates (25);
the method comprises the following specific steps:
step one, a cold stamping mechanism (5) is adopted to install a connecting plate (1) on a press sliding block, a lower die (11) is fixed on the surface of a press basic platform and aligned, and a forming material is placed on the lower die (11) during pressing;
secondly, the press pushes the connecting plate (1) to drive the upper die head (10) to descend, so that the upper die head (10) is driven to punch the formed material, the upper die head (10) is clamped with the lower die (11) in a punching mode, the formed material is deformed, and then the forming of the semi-cylindrical shell is gradually completed through certain steps;
thirdly, mounting the upper die base plate (26) subjected to heat setting on a slide block of a press by using a heat setting mechanism (16), fixing the lower die base plate (17) on the surface of a basic platform of the press, aligning, driving the upper die base plate (26) to descend by the press, and placing the formed component in the first step at a proper position between a first stainless steel base plate (20) and a second stainless steel base plate (23);
and fourthly, the upper die base plate (26) drives the second stainless steel backing plate (23) to extrude the component through the upper die longitudinal rib plate (24) and the upper die transverse rib plate (25), so that the component is positioned in the first stainless steel backing plate (20), the component is positioned at a proper position of the die cavity and is rigidly fixed, then the component is put into a furnace to be subjected to stress relief treatment, the shape of the component is corrected, the heat setting mechanism (16) is opened after the heat treatment, the workpiece is taken out to be subjected to shape and size detection, and then the shell is subjected to machining sizing and surface treatment, so that the work of forming the titanium alloy shell is completed.
2. The method for molding a cylindrical titanium alloy shell according to claim 1, wherein: in the first step, an upper die head (10) and a lower die (11) of stamping in the cold stamping mechanism (5) have certain widths, and the size of a die surface of a cold-formed component is determined by fully considering the resilience of materials.
3. The method for molding a cylindrical titanium alloy shell according to claim 1, wherein: and in the third step, a press is adopted to drive the heat setting mechanism (16), and the resistance of the member in the stress release process is limited by fixing the first stainless steel backing plate (20) and the second stainless steel backing plate (23) or increasing pressing force on the heat setting mechanism (16) in the stress relief process.
4. The method for molding a cylindrical titanium alloy shell according to claim 1, wherein: the more thorough the stress relief in the fourth step is, the higher the precision of the shaping die surface is, and the closer the precision of the obtained forming member is to the theoretical requirement.
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| CN111842597A (en) * | 2020-07-14 | 2020-10-30 | 永胜机械工业（昆山）有限公司 | Titanium material and special metal pipe orifice extension forming equipment and method |
| CN113751585A (en) * | 2021-08-24 | 2021-12-07 | 杭州富阳中恒电气有限公司 | Sheet metal part splicing die body and die |
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| CN206445099U (en) * | 2017-02-08 | 2017-08-29 | 安徽江淮汽车集团股份有限公司 | A kind of punch structure of drawing die |
| CN108145006A (en) * | 2017-12-07 | 2018-06-12 | 北京星航机电装备有限公司 | A kind of titanium alloy box-shaped part Hot drawing method |
| CN109731975A (en) * | 2019-02-14 | 2019-05-10 | 南京宝色股份公司 | A kind of New High-Strength Titanium Alloy hyperboloid thin-walled wide plate manufacturing process |
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