CN105855382A - Creep age forming method for wallboard and pre-pressing mold - Google Patents
Creep age forming method for wallboard and pre-pressing mold Download PDFInfo
- Publication number
- CN105855382A CN105855382A CN201610193272.7A CN201610193272A CN105855382A CN 105855382 A CN105855382 A CN 105855382A CN 201610193272 A CN201610193272 A CN 201610193272A CN 105855382 A CN105855382 A CN 105855382A
- Authority
- CN
- China
- Prior art keywords
- wallboard
- clamp
- creep age
- forming
- age forming
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a creep age forming method for a wallboard and a pre-pressing mold. Firstly, the pre-pressing mold is arranged on a workbench of a hot forming machine, then a wallboard blank is placed on a holding platform of the pre-pressing mold, and the pre-pressing mold is closed; afterwards, the temperature required by creep aging of the wallboard is provided in a pressure maintaining state and is maintained over a preset time threshold value; and finally, when the temperature is decreased to be not higher than 60 DEG C, the wallboard is taken out. The pre-pressing mold is loaded with a press machine, and is uniform in load, high in speed and particularly suitable for rapid press forming of the large-sized and large-curvature wallboard. By means of the creep age forming method for the wallboard and the pre-pressing mold, the limit that existing creep age forming has to depend on pressurization and heating with an autoclave is broken through.
Description
Technical field
The present invention relates to manufacturing technology field, particularly relate to method and the pre-pressing die of a kind of wallboard creep age forming.
Background technology
Creep age forming technology is a kind of metal forming technology combined with ageing strengthening by creep forming.This technique has into
Shape process is simple, reproducible, the feature that drip molding performance is high, has bright prospects at aerospace field.Creep ageing becomes
Shape technology has been obtained for in-depth study, a kind of base of Patent No. CN 102925826 A as published in State Patent Office
In the integral panel creep age forming frock of autoclave and Patent No. CN 103691793 A a kind of based on autoclave can time
Effect reinforced aluminium alloy integral panel one-step moulding method.But these creep age forming methods must use in conjunction with autoclave, suitable
Answering property is poor.A kind of plate-type mechanical load creep age forming device of Patent No. CN 102266887 A and Patent No. CN
The complex double-curvature creep aging forming device of 102218472 A.But these creep age forming devices use screw loading side
Formula, is carrying out large scale, and during the creep age forming of deep camber wallboard part, compacting process speed is slow and easily at wallboard part
Generation contact, surface impression, reduces shaping rate and quality.Along with the raising of this country's research manufacture level, domestic develop
Go out hot forming lathe.
Summary of the invention
The technical problem to be solved is must to rely on autoclave for creep age forming in background technology and carry out big
Size, speed problem slow, ropy during deep camber wallboard part compressing, it is provided that the side of a kind of wallboard creep age forming
Method and pre-pressing die.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of method of wallboard creep age forming, comprises step in detail below:
Step 1), pre-pressing die is arranged on the workbench of hot forming lathe；
Step 2), wallboard blank is placed on the blowing platform of pre-pressing die, utilizes the forcing press of hot forming lathe to make pre-pressing mold
Tool matched moulds, completes the pre-compaction forming of wallboard blank；
Step 3), the forcing press of hot forming lathe continues under packing state, needed for providing wallboard creep ageing in hot forming lathe
Temperature, and keep this temperature to exceed default time threshold, complete the creep age forming of wallboard blank；
Step 4), by the greenhouse cooling in hot forming lathe to not higher than 60 DEG C, take out wallboard part.
As the further prioritization scheme of method of the present invention a kind of wallboard creep age forming, described hot forming lathe can provide
Use temperature be not less than 300 DEG C, service load be not less than 50KN.
As the further prioritization scheme of method of the present invention a kind of wallboard creep age forming, described wallboard blank is for carrying out
The aluminium alloy of ageing strengthening, thickness is 1～80mm.
As the temperature needed for the further prioritization scheme of method of the present invention a kind of wallboard creep age forming, described creep ageing
Being 160～210 DEG C, the time threshold preset is in the range of 15～24h.
The invention also discloses the pre-pressing die of a kind of wallboard creep age forming, comprise upper padding plate, upper mounted plate, bottom plate,
The lower clamp that lower bolster, some upper clamps and a number of and upper clamp are identical；
Shown all location by some pins and bolt between upper mounted plate and upper padding plate, between bottom plate and lower bolster is fixed；
The top of described upper clamp is fixing with upper mounted plate to be connected；
Described lower clamp is arranged under the upper clamp of its correspondence, and bottom is fixing with bottom plate to be connected；
Described upper clamp, lower clamp are provided with the working surface cooperated, and the top of each lower clamp constitutes blowing platform.
As the further prioritization scheme of pre-pressing die of wallboard creep age forming, the one-tenth-value thickness 1/10 of upper clamp and lower clamp is the least
In 40mm, manufacture material identical with wallboard blank.
As the further prioritization scheme of pre-pressing die of wallboard creep age forming, each is provided with between clamp a support bar,
On each clamp and with each on clamp be fixedly linked.
As the further prioritization scheme of pre-pressing die of wallboard creep age forming, under each, clamp is respectively provided on two sides with one
Gripper shoe, and under each, clamp is fixedly linked.
As the further prioritization scheme of pre-pressing die of wallboard creep age forming, described upper clamp and the working surface of lower clamp
Fabricating according to iterative computation profile, profile precision is ± 0.05mm, and roughness is Ra1.6.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1. breach existing creep age forming and must rely on the restriction of autoclave pressurized, heated；
2. pre-pressing die uses forcing press to load, uniform load, and load is big, and speed is fast, it is achieved that large scale, deep camber wallboard
Part the most compressing；
3. pre-pressing die can change corresponding clamp, highly versatile according to the profile needed for wallboard to be formed；
4. the some upper clamp of pre-pressing die, working surface and the wallboard blank of some lower clamps are that face contacts, thermal coefficient of expansion phase
With, improve the surface quality of drip molding；
5. the basic structure of pre-pressing die is grid type, makes drip molding be heated and is more uniformly distributed.
Accompanying drawing explanation
Fig. 1 is the creep age forming view of the present invention；
Fig. 2 is the pre-pressing die schematic diagram of the present invention；
Fig. 3 is change bias adjustment algorithm schematic diagram of the present invention.
In figure, 1-hot forming lathe, 2-forcing press, 3-pre-pressing die, 4-wallboard blank, 301-upper padding plate, 302-is upper fixing
Plate, 303-support bar, clamp under 304-, 305-bottom plate, 306-bolt, 307-pin, 308-lower bolster, 309-props up
Fagging, the upper clamp of 310-.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
As depicted in figs. 1 and 2, the invention discloses the pre-pressing die of a kind of wallboard creep age forming, comprise upper padding plate, on
The lower clamp that fixed plate, bottom plate, lower bolster, some upper clamps and a number of and upper clamp are identical；
Shown all location by some pins and bolt between upper mounted plate and upper padding plate, between bottom plate and lower bolster is fixed；
The top of described upper clamp is fixing with upper mounted plate to be connected；
Described lower clamp is arranged under the upper clamp of its correspondence, and bottom is fixing with bottom plate to be connected；
Described upper clamp, lower clamp are provided with the working surface cooperated, and the top of each lower clamp constitutes blowing platform.
The one-tenth-value thickness 1/10 of upper clamp is not less than 40mm, manufactures material identical with wallboard blank.For keeping longitudinal rigidity, clamp on each
Between be provided with a support bar, on each clamp and with each on clamp be fixedly linked.
The one-tenth-value thickness 1/10 of lower clamp is not less than 40mm, manufactures material identical with wallboard blank.For keeping longitudinal rigidity, each lower clamp
Be respectively provided on two sides with a gripper shoe, and each lower clamp is fixedly linked.
As the core component of pre-pressing die, the working surface of some upper clamps and some lower clamps is processed according to iterative computation profile
Manufacturing, profile precision is ± 0.05mm, and roughness is Ra1.6.Iterative computation profile uses ABAQUS/CREEP subprogram by becoming
Deviation backstepping regulation algorithm calculates gained.Wherein the constitutive model of ABAQUS/CREEP subprogram is:
ε=A (σ-σ0)n(tm+ Bt+C)
In formula, ε is strain, and σ is stress, and t is the time, A, B, C, m, n, σ0For material constant.Material constant
Obtained by the single shaft creep tension test data of matching wallboard material.
Become bias adjustment algorithm as it is shown on figure 3, specifically comprise the following steps that
The target shape arranging drip molding is initial profile S0, blank loads patch mould in initial profile S0.Creep age forming unloads
After, blank recoils to positionInitial profile is chosen a series of backstepping point A, B .....It is illustrated as a example by A point,
The point matched with A point on blank rebound value after unloading is EA, by EABeing multiplied by modified tone joint, COEFFICIENT K is counter adds to A point, makes
Profile " the most curved " is to S1(A).Backstepping B, C in this approach ... N point, the face being made up of a series of new point obtained after backstepping is new
Profile position.Reload to new profile S1, unloading.With initial profile S after calculating blank resilience0Rebound value.With this
Iterative computation is until error rate meets the requirements.Regulation formula is:
In formula, S0(N) it is position coordinates at initial profile N point；En(N) it is S0(N) withDeviation；For
Become after bias adjustment resilience the position coordinates at corresponding N point on plate for n-1 time；Sn(N) it is to become right in profile after bias adjustment for n time
Answer the position coordinates at N point；K is offset adjustment factors, chooses according to error rate β %
Specifically comprising the following steps that of wallboard creep age forming method
Step 1), pre-pressing die is arranged on the workbench of hot forming lathe；
Step 2), wallboard blank is placed on the blowing platform of pre-pressing die, utilizes the forcing press of hot forming lathe to make pre-pressing mold
Tool matched moulds, completes the pre-compaction forming of wallboard blank；
Step 3), the forcing press of hot forming lathe continues under packing state, needed for providing wallboard creep ageing in hot forming lathe
Temperature, and keep this temperature to exceed default time threshold, complete the creep age forming of wallboard blank；
Step 4), by the greenhouse cooling in hot forming lathe to not higher than 60 DEG C, take out wallboard part.
The use temperature that hot forming lathe can provide is not less than 300 DEG C, and service load is not less than 50KN.
Wallboard blank is the aluminium alloy that can carry out ageing strengthening, can be i.e. band muscle, it is also possible to being without muscle, thickness is
1～80mm.
Temperature needed for creep ageing is 160～210 DEG C, and the time threshold preset is in the range of 15～24h.
It is understood that unless otherwise defined, all terms used herein (include technology art to those skilled in the art of the present technique
Language and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also should manage
Solving, those terms defined in such as general dictionary should be understood that the meaning one having with the context of prior art
The meaning caused, and unless defined as here, will not explain by idealization or the most formal implication.
Above-described detailed description of the invention, has been carried out the most specifically the purpose of the present invention, technical scheme and beneficial effect
Bright, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. the method for a wallboard creep age forming, it is characterised in that comprise step in detail below:
Step 1), is arranged on pre-pressing die on the workbench of hot forming lathe；
Step 2), wallboard blank is placed on the blowing platform of pre-pressing die, utilizes the forcing press of hot forming lathe to make pre-pressing die matched moulds, complete the pre-compaction forming of wallboard blank；
Step 3), the forcing press of hot forming lathe continues under packing state, provides the temperature needed for wallboard creep ageing, and keeps this temperature to exceed default time threshold, complete the creep age forming of wallboard blank in hot forming lathe；
Step 4), by the greenhouse cooling in hot forming lathe to not higher than 60 DEG C, takes out wallboard part.
The method of wallboard creep age forming the most according to claim 1, it is characterised in that the use temperature that described hot forming lathe can provide is not less than 300 DEG C, service load is not less than 50KN.
The method of wallboard creep age forming the most according to claim 1, it is characterised in that described wallboard blank is the aluminium alloy that can carry out ageing strengthening, thickness is 1 ~ 80mm.
The method of wallboard creep age forming the most according to claim 1, it is characterised in that the temperature needed for described creep ageing is 160～210 DEG C, the time threshold preset is in the range of 15～24h.
5. the pre-pressing die of a wallboard creep age forming, it is characterised in that comprise the lower clamp that upper padding plate, upper mounted plate, bottom plate, lower bolster, some upper clamps and a number of and upper clamp are identical；
Shown all location by some pins and bolt between upper mounted plate and upper padding plate, between bottom plate and lower bolster is fixed；
The top of described upper clamp is fixing with upper mounted plate to be connected；
Described lower clamp is arranged under the upper clamp of its correspondence, and bottom is fixing with bottom plate to be connected；
Described upper clamp, lower clamp are provided with the working surface cooperated, and the top of each lower clamp constitutes blowing platform.
The pre-pressing die of wallboard creep age forming the most according to claim 5, it is characterised in that the one-tenth-value thickness 1/10 of upper clamp and lower clamp, all not less than 40mm, manufactures material identical with wallboard blank.
The pre-pressing die of wallboard creep age forming the most according to claim 5, it is characterised in that be provided with a support bar on each between clamp, on each clamp and with each on clamp be fixedly linked.
The pre-pressing die of wallboard creep age forming the most according to claim 5, it is characterised in that each descends the gripper shoe that is respectively provided on two sides with of clamp, and each lower clamp is fixedly linked.
The pre-pressing die of wallboard creep age forming the most according to claim 5, it is characterised in that the working surface of described upper clamp and lower clamp fabricates according to iterative computation profile, and profile precision is ± 0.05mm, and roughness is Ra1.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193272.7A CN105855382A (en) | 2016-03-30 | 2016-03-30 | Creep age forming method for wallboard and pre-pressing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193272.7A CN105855382A (en) | 2016-03-30 | 2016-03-30 | Creep age forming method for wallboard and pre-pressing mold |
Publications (1)
| Publication Number | Publication Date |
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| CN105855382A true CN105855382A (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610193272.7A Pending CN105855382A (en) | 2016-03-30 | 2016-03-30 | Creep age forming method for wallboard and pre-pressing mold |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252882A (en) * | 2019-06-28 | 2019-09-20 | 中南大学 | A kind of aluminium alloy manufacturing process |
| CN110802163A (en) * | 2019-10-21 | 2020-02-18 | 苏州科技大学 | Ultrasonic-assisted batch creep aging forming device for wall plates and using method |
| CN110802220A (en) * | 2019-11-17 | 2020-02-18 | 苏州科技大学 | Creep age forming method for large-curvature wallboard |
| CN110802164A (en) * | 2019-11-17 | 2020-02-18 | 苏州科技大学 | Batch creep aging forming device for wall plates and using method |
| CN110883171A (en) * | 2019-12-24 | 2020-03-17 | 陈尧 | Special die equipment for creep age forming of aluminum alloy |
| CN111218633A (en) * | 2020-02-18 | 2020-06-02 | 南昌航空大学 | Method and device for press aging forming of plate |
| CN113976707A (en) * | 2021-11-03 | 2022-01-28 | 西北工业大学 | Compound forming method for aluminum alloy large-curvature complex wallboard component |
| CN115156410A (en) * | 2022-09-07 | 2022-10-11 | 新沂市振港金属制品有限公司 | Metal creep forming die |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252882A (en) * | 2019-06-28 | 2019-09-20 | 中南大学 | A kind of aluminium alloy manufacturing process |
| CN110802163A (en) * | 2019-10-21 | 2020-02-18 | 苏州科技大学 | Ultrasonic-assisted batch creep aging forming device for wall plates and using method |
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| CN110802164A (en) * | 2019-11-17 | 2020-02-18 | 苏州科技大学 | Batch creep aging forming device for wall plates and using method |
| CN110883171A (en) * | 2019-12-24 | 2020-03-17 | 陈尧 | Special die equipment for creep age forming of aluminum alloy |
| CN111218633A (en) * | 2020-02-18 | 2020-06-02 | 南昌航空大学 | Method and device for press aging forming of plate |
| CN113976707A (en) * | 2021-11-03 | 2022-01-28 | 西北工业大学 | Compound forming method for aluminum alloy large-curvature complex wallboard component |
| CN113976707B (en) * | 2021-11-03 | 2023-09-01 | 西北工业大学 | Composite forming method for aluminum alloy large-curvature complex wallboard member |
| CN115156410A (en) * | 2022-09-07 | 2022-10-11 | 新沂市振港金属制品有限公司 | Metal creep forming die |
| CN115156410B (en) * | 2022-09-07 | 2023-02-28 | 新沂市振港金属制品有限公司 | Metal creep forming die |
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