CN109500187A - A kind of manufacturing process of the ultra-thin ball-cut shape part of titanium alloy - Google Patents
A kind of manufacturing process of the ultra-thin ball-cut shape part of titanium alloy Download PDFInfo
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- CN109500187A CN109500187A CN201811567759.2A CN201811567759A CN109500187A CN 109500187 A CN109500187 A CN 109500187A CN 201811567759 A CN201811567759 A CN 201811567759A CN 109500187 A CN109500187 A CN 109500187A
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- cut shape
- ball
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- thin
- titanium alloy
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/10—Stamping using yieldable or resilient pads
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to a kind of manufacturing process of the ultra-thin ball-cut shape part of titanium alloy.This method comprises: titanium-alloy thin-plate is placed between the lower die of fixture for forming and upper mold, the lower die is the hard metal structure with ball-cut shape groove, the ball-cut shape groove is used for the hemispherical shell structure of the ultra-thin ball-cut shape part of forming titanium alloy, the upper mold is the middle gravity die polyurethane soft mode with predetermined thickness, it is provided with ladder hole in the thickness direction of the upper mold, the ladder hole is located at the surface of the ball-cut shape groove；Punching press is carried out to the upper mold, under pressure, the titanium-alloy thin-plate is bonded and with it towards the lower die depressed deformation with the upper mold, and bulging goes out matched hemispherical shell structure in the ball-cut shape groove of the lower die；It after shaping the ultra-thin ball-cut shape part of the titanium alloy with hemispherical shell structure, by the upper mold release and restores to the original state, the ultra-thin ball-cut shape part of titanium alloy of forming is taken out from lower die, is annealed to part.
Description
Technical field
The present invention relates to titanium alloy forming technique fields, more particularly to a kind of forming of the ultra-thin ball-cut shape part of titanium alloy
Method.
Background technique
Metal bellows tank is a kind of novel space flight tank, and material is titanium alloy material, titanium parts are high with its specific strength,
The features such as corrosion-resistant, anti-oxidant, is widely used in Aeronautics and Astronautics field.The long-term storage of propellant especially oxidant may be implemented
It deposits, there is good airproof performance, fill storage period is long, mass center is stable, does not generate shaking wide adaptability, can be pressurized using hot combustion gas etc.
Feature.
The ultra-thin ball-cut shape part of titanium alloy that overturning can be achieved in its top is metallic membrane.Metallic membrane is as metal bellows
Critical component in tank, the service life of metallic membrane directly affect the service life of aircraft, and metallic membrane is ultra-thin hemispherical shell knot
Structure, material are titanium alloy, and part thickness is only 0.15mm, it is desirable that realize repeatedly overturning.It is golden under external gas pressure when work
Belong to diaphragm to begin turning from edge, squeezes liquid fuel and discharge it, provide driving force for external device (ED).
For such titanium alloy high-performance ball-cut shape part, not using the part of titanium alloy conventional manufacturing process forming at present
It is able to satisfy the requirement of this kind of part.The manufacturing process of such part is domestic also in the exploratory stage at present.
Currently, manufacturing process is mainly cold forming and hot forming for such titanium alloy component.Since titanium alloy is to be not easy
The high metal of forming, intensity uses cold forming method punching press, and cold conditions state Form springback is larger and easy to crack and wrinkles.Using heat
The intensity of titanium alloy can reduce in manufacturing process heat forming processes, be unable to satisfy performance requirement through overtesting, shape at high cost, effect
Rate is low, cannot achieve the requirement that part is repeatedly overturn, and the probability ruptured in switching process is higher.At present using conventional titanium
The part that Alloy Forming method shapes is not able to satisfy the requirement of such part.
Therefore, a kind of manufacturing process of ultra-thin ball-cut shape part of titanium alloy is inventor provided.
Summary of the invention
The embodiment of the invention provides a kind of manufacturing process of the ultra-thin ball-cut shape part of titanium alloy, solve the prior art at
The titanium alloy high-performance ultrathin segment part of shape creases easily cracking, and the problem of be unable to satisfy intensity requirement.
The embodiment of the present invention proposes a kind of manufacturing process of ultra-thin ball-cut shape part of titanium alloy, this method comprises:
Titanium-alloy thin-plate is placed between the lower die of fixture for forming and upper mold, the lower die is with ball-cut shape groove
Hard metal structure, the ball-cut shape groove is used for the hemispherical shell structure of the ultra-thin ball-cut shape part of forming titanium alloy, described
Upper mold is the middle gravity die polyurethane soft mode with predetermined thickness, is provided with ladder hole, the rank in the thickness direction of the upper mold
Terraced through-hole is located at the surface of the ball-cut shape groove；
Punching press is carried out to the upper mold, under pressure, the titanium-alloy thin-plate is bonded with the upper mold and with its court
The lower die depressed deformation, bulging goes out matched hemispherical shell structure in the ball-cut shape groove of the lower die；
After shaping the ultra-thin ball-cut shape part of the titanium alloy with hemispherical shell structure, by the upper mold release and extensive
Shape is restored, the ultra-thin ball-cut shape part of titanium alloy of forming is taken out from lower die, is annealed to part.
Further, it the step of titanium-alloy thin-plate is placed between the lower die of fixture for forming and upper mold before, also needs pair
The titanium-alloy thin-plate two sides even application graphite, for uniformly being lubricated in forming process.
Further, the fastening end face of the lower die and the upper mold is plane, the end face center design of the lower die
For the model slot of ball-cut shape groove, correspondingly, the ladder hole is located at the center of the upper mold.
Further, it is aperture with following fastening end face that the stepped hole of the upper mold is close, is big far from end face is fastened
Hole.
Further, the diameter macropores of the stepped hole are 2mm-16mm, hole diameter 0.3mm-2.5mm.
Further, the lower die uses the polyurethane of shore 75~80, and thickness range is between 60mm~80mm.
Further, the titanium-alloy thin-plate with a thickness of 0.1mm~0.25mm.
Further, the height of the ultra-thin ball-cut shape part of the titanium alloy is 15mm-40mm.
To sum up, the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy of the invention devises the lower die of fixture for forming and upper
Mould, lower die use with ball-cut shape groove hard metal structure be used as cavity block, upper mold use in gravity die polyurethane soft mode conduct
Anode membrane squeezes titanium-alloy thin-plate by the soft mode of upper mold, shapes matching titanium alloy in the ball-cut shape groove of lower die
Ultra-thin spherical structure has shaped high-performance ultrathin ball-cut shape part, solves the problems, such as that conventional cold forming is easy to crack and wrinkles.This
Outside, it is ventilated, is solved the problems, such as after shaping since upper mold retraction is also easy to produce deformation by the stepped hole of upper mold.Method of the invention
The mould structure of fixture for forming is simplified, high yield rate realizes the batch micro operations of ultra-thin segment-shaped part, effectively shortens manufacture
Period reduces production cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of ultra-thin ball-cut shape part schematic diagram.
Fig. 2 is using present invention method application scenarios schematic diagram.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment it is detailed
Thin description and attached drawing cannot be used to limit the scope of the invention for illustratively illustrating the principle of the present invention, i.e., of the invention
It is not limited to described embodiment, covers equivalent modifications, replacement and improvement under the premise of without departing from the spirit of the present invention.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
For the technical problem for solving titanium alloy high-performance ultrathin segment part forming, the present invention provides a kind of titanium alloys
The manufacturing process of ultra-thin ball-cut shape part can shape the titanium alloy high-performance ultrathin that can be achieved repeatedly to overturn using this method
Ball-cut shape part, fixture for forming mold are divided into upper and lower mould, and upper mold is the middle gravity die polyurethane soft mode with stepped hole, lower die be at
Shape cavity plate.It is shown in Figure 2.It needs to play uniform lubricant effect in forming process to plate even application graphite before forming.It adopts
Ultra-thin titanium alloy sheet material is shaped with this method and tooling, the cracking generated when cold conditions forming and corrugation can be solved.Traditional soft mode
Forming retraction can make ultra-thin ball-cut shape part generate deformation.
Referring to figure 1 and figure 2, the embodiment of the invention provides a kind of forming sides of the ultra-thin ball-cut shape part of titanium alloy
Method.This method at least includes the following steps S110~step S130:
Step S110, titanium-alloy thin-plate is placed between the lower die of fixture for forming and upper mold, and the lower die is with ball
The hard metal structure of type groove is lacked, the ball-cut shape groove is used for the hemispherical shell of the ultra-thin ball-cut shape part of forming titanium alloy
Structure, the upper mold are the middle gravity die polyurethane soft mode with predetermined thickness, and it is logical to be provided with ladder in the thickness direction of the upper mold
Hole, the ladder hole are located at the surface of the ball-cut shape groove.
Step S120 carries out punching press to the upper mold, and under pressure, the titanium-alloy thin-plate is bonded with the upper mold
And with it towards the lower die depressed deformation, bulging goes out matched hemispherical shell knot in the ball-cut shape groove of the lower die
Structure.
Step S130, after shaping the ultra-thin ball-cut shape part of the titanium alloy with hemispherical shell structure, on described
Mould release simultaneously restores to the original state, and the ultra-thin ball-cut shape part of titanium alloy of forming is taken out from lower die, is annealed to part.
Before step S110, also need to titanium-alloy thin-plate two sides even application graphite, for uniformly moistening in forming process
It is sliding.
Specifically, the fastening end face of the lower die in the method for the present invention and upper mold is plane, the end face center of the lower die
It is designed as the model slot of ball-cut shape groove, correspondingly, the ladder hole is located at the center of the upper mold.The stepped hole of upper mold leans on
It is closely aperture with following fastening end face, is macropore far from end face is fastened, the diameter macropores of stepped hole are 2mm-16mm, and aperture is straight
Diameter is 0.3mm-2.5mm.Lower die uses the polyurethane of shore 75~80, and thickness range is between 60mm~80mm.Of the invention
The titanium-alloy thin-plate that method is suitable for a thickness of 0.1mm~0.25mm, it is ultra-thin for the titanium alloy of 15mm-40mm for forming height
Ball-cut shape part.
It should be noted that the aperture of stepped hole is related to ball-cut shape groove shapes, according to the ball-cut shape part of processing
With corresponding ball-cut shape groove type face, i.e., adjusting hole size is corresponded to according to the ball-cut shape diameter of part size of processing, the present invention is suitable
It in its altitude range that 100mm-300mm. this method is adapted to segment-shaped part is diameter with the diameter range of segment-shaped part
0.3 times to 0.5 times between.
The design of polyurethane upper mold has stepped hole as stomata in the present invention, can effectively solve to make to surpass when flexible die forming retraction
Thin ball-cut shape part leads to the problem of deformation.The punch position of stepped hole is polyurethane center.By roll-over test, using the party
The metallic membrane as shown in Figure 1 of method forming may be implemented repeatedly to overturn, and for ultra-thin ball-cut shape part, both ensure that not open
It splits, is wrinkle resistant, and making part that there is high-performance, ensure that yield rate, simplifying mould structure, reducing production cost, shortening life
Produce the period.This kind of method can especially apply the forming in the ultra-thin ball-cut shape part of titanium alloy.
The step of practical application of the present invention in engineering is referring to following examples:
1, manufacture fixture for forming according to the above scheme, select in upper mold of the rigid polyurethane as fixture for forming, using hard
The entity structure of metal is as lower die；
2, to titanium-alloy thin-plate two sides even application graphite,；
3, titanium-alloy thin-plate is placed between upper and lower mould；
4, it is fixed on stamping equipment in mold, ladder stomata when fixed above polyurethane upper mold cannot be blocked；
5, stamping equipment is opened, when slider of punch downlink, upper and lower mould closes up, and upper and lower mould forms near closed hollow ring, then lower die
The plate bulging of titanium-alloy thin-plate is gone out part shape by compressive deformation, and pressure is about 30Mpa when punching press；
6, pressure maintaining is carried out, the time is about 10s；
7, the upper mold pressure relief of slider of punch uplink, polyurethane restores to the original state, from the ball-cut shape groove of lower die gently
Take out ultra-thin segment-shaped part after molding.
8, it anneals to part, improves intensity.
It should be noted that upper mold/lower die in the present invention can be the structure being made of multi-blocked structure, it is also possible to one
The overall structure of body formula, the present invention are without limitation.
The above description is only an example of the present application, it is not limited to described above and shown in figure specific
Step and structure.Also, the detailed description to known method technology for brevity, is omitted here.The present invention is not being departed from
Range in the case where to those skilled in the art, various changes and changes are possible in this application.It is all the application's
Any modification, equivalent replacement, improvement and so within spirit and principle, should be included in claims hereof range
It is interior.
Claims (8)
1. a kind of manufacturing process of the ultra-thin ball-cut shape part of titanium alloy, which is characterized in that the manufacturing process includes:
Titanium-alloy thin-plate is placed between the lower die of fixture for forming and upper mold, the lower die is the hard with ball-cut shape groove
Metal structure, the ball-cut shape groove are used for the hemispherical shell structure of the ultra-thin ball-cut shape part of forming titanium alloy, the upper mold
For the middle gravity die polyurethane soft mode with predetermined thickness, it is provided with ladder hole in the thickness direction of the upper mold, the ladder is logical
Hole is located at the surface of the ball-cut shape groove；
Punching press is carried out to the upper mold, under pressure, the titanium-alloy thin-plate is bonded and with it towards described with the upper mold
Lower die depressed deformation, bulging goes out matched hemispherical shell structure in the ball-cut shape groove of the lower die；
After shaping the ultra-thin ball-cut shape part of the titanium alloy with hemispherical shell structure, by the upper mold release and restore former
Shape takes out the ultra-thin ball-cut shape part of titanium alloy of forming from lower die, anneals to part.
2. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 1, which is characterized in that by titanium alloy
Before thin plate is placed on the step of between the lower die of fixture for forming and upper mold, also need to the titanium-alloy thin-plate two sides even application stone
Ink, for uniformly being lubricated in forming process.
3. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 1, which is characterized in that the lower die and
The fastening end face of the upper mold is plane, and the end face center of the lower die is designed as the model slot of ball-cut shape groove, correspondingly,
The ladder hole is located at the center of the upper mold.
4. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 3, which is characterized in that the upper mold
The close fastening end face with lower die of stepped hole is aperture, is macropore far from end face is fastened.
5. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 4, which is characterized in that the stepped hole
Diameter macropores be 2mm-16mm, hole diameter 0.3mm-2.5mm.
6. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 1, which is characterized in that the lower die is adopted
With the polyurethane of shore 75~80, thickness range is between 60mm~80mm.
7. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 1, which is characterized in that the titanium alloy
Gauge of sheet is 0.1mm~0.25mm.
8. the manufacturing process of the ultra-thin ball-cut shape part of titanium alloy according to claim 1 or claim 7, which is characterized in that the titanium
The height of the ultra-thin ball-cut shape part of alloy is 15mm-40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811567759.2A CN109500187B (en) | 2018-12-21 | 2018-12-21 | Forming method of titanium alloy ultrathin spherical segment type part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811567759.2A CN109500187B (en) | 2018-12-21 | 2018-12-21 | Forming method of titanium alloy ultrathin spherical segment type part |
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| CN109500187B CN109500187B (en) | 2019-12-20 |
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Cited By (1)
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| CN109500187B (en) | 2019-12-20 |
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