CN106734487A - A kind of mutiprogramming design manufacturing process of deep frustum type part - Google Patents
A kind of mutiprogramming design manufacturing process of deep frustum type part Download PDFInfo
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- CN106734487A CN106734487A CN201611069502.5A CN201611069502A CN106734487A CN 106734487 A CN106734487 A CN 106734487A CN 201611069502 A CN201611069502 A CN 201611069502A CN 106734487 A CN106734487 A CN 106734487A
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- deep
- frustum type
- box
- type part
- conical surface
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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
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
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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 kind of mutiprogramming design manufacturing process of deep frustum type part, comprise the following steps：S1, according to surface area not political reform, the deep frustum type part that side wall is the conical surface is converted into the box part that finish dimensional identical side wall is straight wall：Oval blank as obtained by exhibition material passes through (k 1) road drawing sequence, obtains oval cylindrical member, then through kth procedure drawing into box part；S2, it is final deep frustum type part by Box-Shaped Drawing：The conical surface shapes since bottom, and in each procedure, the conical surface gradually increases, until shaping.The present invention can to greatest extent solve the problems such as excessive reduction during part punching, drawing crack, corrugation, reduce percent defective of the part in forming process, improve production efficiency.
Description
Technical field
The invention belongs to sheet material Technology of Plastic Processing field, and in particular to a kind of mutiprogramming design of deep frustum type part into
Shape method.
Background technology
Drawing is a kind of important forming technology of metal blank, is widely used in automobile, Aero-Space, electrical equipment and electronics etc.
In industrial production.Due to being influenceed by blank, deep-drawing deformation degree, mold friction and sheet material bearing capacity, drawing part is special
It is that deep drawing part is likely to occur constriction or cracking in drawing process, is especially in contact with punch-nose angle in straight wall lower end
Region, constriction or cracking in drawing process occur mainly in this most dangerous, most weak section.
The deep-draw Deep forming of cylindrical member and box part has fairly perfect forming technology at present, but for frustum type zero
The deep drawing forming technology of part yet there are no Patents and document report.Compared with cylindrical member and box part, taper type zero
The drawing of part, position, stressing conditions, deformation characteristicses of its deformed area etc. are all different, can not simply with drawing for this kind of part
Deep coefficient is gone to weigh the complexity for shaping, and the foundation of mold design and process engineering can not be made of it.Frustum type zero
In drawing, the position of deformed area is not only located under blank holder part, and the center section of blank has also assisted in deformation.The centre of blank
Partial stressing conditions and deformation are more complicated.In the contact zone of punch-pin and blank, because material pastes mould completely, this portion
It is divided to material two to tension one to compression, it is similar to bulging.Center section beyond punch-pin and material contact region, its stress state
It is the same with flange portion.Therefore, the corrugation of this kind of part is not only possible produces in flange portion, it is also possible in center section
Produce, be additionally, since center section and do not contacted with punch-pin, when plate is relatively thin, this wrinkling is even more serious.In addition,
Also there is this kind of part, pressure small with punch-pin contact area to concentrate, easily cause local thinning cracking and free area is big, flanging
The shortcomings of circle effect weakens, easily wrinkles relatively.
The content of the invention
It is an object of the invention to provide a kind of mutiprogramming design manufacturing process of deep frustum type part, it can solve depth
The problems such as constriction, cracking, corrugation that frustum type part occurs in drawing process, reduce part useless in forming process
Product rate, improve production efficiency.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of mutiprogramming design manufacturing process of deep frustum type part, comprises the following steps：
S1, according to surface area not political reform, the deep frustum type part that side wall is the conical surface is converted into finish dimensional identical side
Wall is the box part of straight wall：Oval blank as obtained by exhibition material passes through (k-1) road drawing sequence, obtains oval cylindrical member, then through kth
Procedure drawing is into box part；
S2, it is final deep frustum type part by Box-Shaped Drawing：The conical surface shapes since bottom, in each procedure,
The conical surface gradually increases, until shaping.
By above-mentioned technical proposal, step S1 is specifically included：
S101, keep the short side dimension A and long edge size B of deep frustum type part oral area constant, it is constant according to surface area
Principle, the oral area radius r of box part is gone out by the Size calculation of deep frustum type partkk, bottom transition radius of corner
rdk, side wall transition radius of corner rjkWith the height H of box partk；
S102, the specific size A for going out each step of drawing and forming box part according to the Size calculation of deep frustum type parti、Bi、
RAi、RBiAnd Hi, i=0,1,2 ... .., k, during i=0 be billet size, wherein, Ai、BiRespectively into every step half in box operation
The length shaft size of finished product, RAi、RBiRespectively each two oval arc radius of semi-finished product, HiFor semi-finished product highly；
S103, according to above computed information, set up and box-like completed by the drawing Mathematical Modeling of each drawing sequence
The drawing and forming of part.
By above-mentioned technical proposal, step S2 is specifically included：
S201, the height h for first determining each road semi-finished product conical surface(k+1)、h(k+2)、.....、h(n-1)；
S202, determined divided by vertical wall section perimeter of section by the difference in areas of part total surface area and cone surface which area again it is straight
The height of wall, the height of the straight wall obtains semi-finished product overall height H plus the height of the semi-finished product conical surface(k+1)、H(k+2)、.....、
H(n-1)；
S203, the data that each step is calculated more than, box is completed by setting up the stretching Mathematical Modeling of each drawing sequence
Shape part drawing and forming is deep frustum type part.
The present invention, has the advantages that：Due to deep frustum type part, to be difficult a step stamping, so need will most
Whole target part is converted to " the transition part " of centre, and it is target part then to be reshaped by transition part, and the present invention is proposed
The first forming technology of " circle " " side " finally " cone " again, solve constriction that deep frustum type part occurs in drawing process,
The problems such as cracking, corrugation, reduce percent defective of the part in forming process, improve production efficiency.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 a are the front view of box part forming technology in the embodiment of the present invention；
Fig. 1 b are the top view of box part forming technology in the embodiment of the present invention；
Fig. 2 a be the embodiment of the present invention in box part be configured to deep frustum type part forming technology front view；
Fig. 2 b be the embodiment of the present invention in box part be configured to deep frustum type part forming technology top view；
Fig. 3 is the process sequence diagram of shaping transition part in automobile bumper energy absorption box forming process；
Fig. 4 be automobile bumper energy absorption box forming process in by transition part forming for energy-absorption box process sequence diagram.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as shown in Fig. 1 a- Fig. 2 b, a kind of mutiprogramming design of deep frustum type part into
Shape method, comprises the following steps：
S1, according to surface area not political reform, the deep frustum type part that side wall is the conical surface is converted into finish dimensional identical side
Wall is the box part of straight wall：Oval blank as obtained by exhibition material passes through (k-1) road drawing sequence, obtains oval cylindrical member, then through kth
Procedure drawing is into box part；
S2, it is final deep frustum type part by Box-Shaped Drawing：The conical surface shapes since bottom, in each procedure,
The conical surface gradually increases, until shaping.
In a preferred embodiment of the invention, as shown in Figure 1 a, 1 b, step S1 is specifically included：
S101, keep the short side dimension A and long edge size B of deep frustum type part oral area constant, it is constant according to surface area
Principle, the oral area radius r of box part is gone out by the Size calculation of deep frustum type partkk, bottom transition radius of corner
rdk, side wall transition radius of corner rjkWith the height H of box partk；
S102, the specific size A for going out each step of drawing and forming box part according to the Size calculation of deep frustum type parti、Bi、
RAi、RBiAnd Hi, i=0,1,2 ... .., k, during i=0 be billet size, wherein, Ai、BiRespectively into every step half in box operation
The length shaft size of finished product, RAi、RBiRespectively each two oval arc radius of semi-finished product, HiFor semi-finished product highly；
S103, according to above computed information, set up and box-like completed by the drawing Mathematical Modeling of each drawing sequence
The drawing and forming of part.
In a preferred embodiment of the invention, as shown in Fig. 2 a, Fig. 2 b, step S2 is specifically included：
S201, the height h for first determining each road semi-finished product conical surface(k+1)、h(k+2)、.....、h(n-1)；
S202, determined divided by vertical wall section perimeter of section by the difference in areas of part total surface area and cone surface which area again it is straight
The height of wall, the height of the straight wall obtains semi-finished product overall height H plus the height of the semi-finished product conical surface(k+1)、H(k+2)、.....、
H(n-1)；
S203, the data that each step is calculated more than, box is completed by setting up the stretching Mathematical Modeling of each drawing sequence
Shape part drawing and forming is deep frustum type part.
The present invention mainly by overall deep frustum type part drawing shaping be divided into traditional Box-Shaped Drawing shaping and by
It is final deep frustum type part that box part is reshaped, and by this drawing and forming mode, solves deep frustum type part and is drawing
The problems such as constriction, cracking, corrugation for occurring during Deep forming, improve production efficiency tool is of great significance.
The present invention is comprised the following steps in concrete application：
1) Box-Shaped Drawing
A () calculates the geometric parameter r of transition part according to the constant principle of surface area by the size of target partkk、
rdk、rjk、Hk；
B () exists according to the size of part using Wang Fujun et al.《Flanged deep square box parts repeatedly load-unload optimization design》In
The formula of proposition calculates the specific size A of each step of drawing and forming box parti、Bi、RAi、RBi、Hi, i=0,1,2 ... ..,
K, wherein i=0 are billet size, Ai、BiIt is into the semi-finished product length shaft size often walked in box operation, RAi、RBiFor semi-finished product are each
Oval two arc radius, HiFor semi-finished product highly；
C () completed according to more than by each step computed information, the drawing Mathematical Modeling for setting up each drawing sequence
Cross the part i.e. drawing and forming of box part；
2) frustum type part drawing shaping：It is final deep frustum type part from box part to drawing, is that gradually shaping is bored
The process in face, the conical surface shapes since bottom, and in each procedure, the conical surface gradually increases, until shaping, in forming process,
The size of intermediate semi-finished products can equally be calculated with surface area not political reform, and specific method is：
A () determines the height h of each road semi-finished product conical surface(k+1)、h(k+2)、.....h(n-1)；
B () determines straight wall by the difference in areas of part total surface area and cone surface which area divided by vertical wall section perimeter of section
Highly, both are added and obtain semi-finished product overall height H(k+1)、H(k+2)、.....H(n-1), α is the angle of side wall and vertical direction；
C () data that each step is calculated more than, box-like is completed by setting up the stretching Mathematical Modeling of each drawing sequence
Part drawing and forming is deep frustum type part.
Automobile bumper energy absorption box three-dimensional mathematical model as shown in figure 4, the part is exactly typical depth frustum type part, under
Face illustrates using the present invention to its forming process.
Automobile bumper energy absorption box forming technology includes：
1) Box-Shaped Drawing：
A () is according to area principle of invariance, the size that can be calculated transition part as shown in Figure 3：Height Hk=
115.1mm, finish dimensional A=94mm, B=72mm, side wall radius of corner rjk=15mm, bottom roundings radius rdk=8mm, mouth
Portion's radius of corner is rkk=6mm；
B size that the selected formula of () application can be calculated Box-Shaped Drawing each processing step model is：
Blank dimension：A0=267.4mm, B0=264.6mm, RAo=134.7mm, RBo=131.4mm；T=1.1mm；
First drawing semi-finished dimensions：A1=148.9mm, B1=147.6mm；RA1=74.9mm, RB1=73.4mm；H1
=75.7mm；rk1=rd1=10mm；
Second drawing semi-finished dimensions：A2=124.6mm, B2=113.8mm；RA2=66.5mm, RB2=53.4mm；H2
=98.3mm；rk2=rd2=8mm；
3rd road is into box process dimension：A=94mm, B=72mm；rjk=15mm；rdk=8mm, rkk=6mm, Hk=
115.1mm；
C () sets up the geometrical model for often walking according to data above, carry out box part deep-draw Deep forming.Often walk formation of parts knot
Fruit is as shown in Figure 3；
2) frustum type drawing and forming：
A () determines each road semi-finished product height of conical surface：h4=60mm, h5=100mm；
B () determines the height of straight wall, two by the difference in areas of total surface area and cone surface which area divided by straight wall perimeter of section
Person is added and obtains semi-finished product total height：H4=121mm, H5=132.1mm；The specific size for often walking is as follows：
4th road drawing semi-finished dimensions：Height of conical surface h4=60mm, overall height H4=121mm, rj4=15mm, rd4=
8mm, rk4=6mm；
5th road drawing semi-finished dimensions：Height of conical surface h5=100mm, overall height H5=132.1mm, rj5=15mm, rd5
=8mm, rk5=6mm；
6th road drawing finished product (automobile rear bumper energy-absorption box) size：Height of conical surface h6=137mm, overall height H6=
144.6mm, rj6=15mm, rd6=15mm, rk6=6mm；
C () sets up the geometrical model for often walking according to data above, carry out the deep drawing technique that box part is configured to energy-absorption box,
Often step forming results are as shown in Figure 4, you can obtain final automobile bumper energy absorption box deep drawing forming results.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (3)
1. a kind of mutiprogramming design manufacturing process of deep frustum type part, it is characterised in that comprise the following steps：
S1, according to surface area not political reform, the deep frustum type part that side wall is the conical surface is converted into finish dimensional identical side wall is
The box part of straight wall：Oval blank as obtained by exhibition material passes through (k-1) road drawing sequence, obtains oval cylindrical member, Zai Jingk roads work
Sequence drawing is into box part；
S2, it is final deep frustum type part by Box-Shaped Drawing：The conical surface shapes since bottom, in each procedure, the conical surface
Gradually increase, until shaping.
2. method according to claim 1, it is characterised in that step S1 is specifically included：
S101, keep the short side dimension A and long edge size B of deep frustum type part oral area constant, according to the principle that surface area is constant,
Go out the oral area radius r of box part by the Size calculation of deep frustum type partkk, bottom transition radius of corner rdk, side wall
Radius rjkWith the height H of box partk；
S102, the specific size A for going out each step of drawing and forming box part according to the Size calculation of deep frustum type parti、Bi、RAi、
RBiAnd Hi, i=0,1,2 ... .., k, during i=0 be billet size, wherein, Ai、BiRespectively into often walking semi-finished product in box operation
Length shaft size, RAi、RBiRespectively each two oval arc radius of semi-finished product, HiFor semi-finished product highly；
S103, according to above computed information, complete box part by setting up the drawing Mathematical Modeling of each drawing sequence
Drawing and forming.
3. method according to claim 1, it is characterised in that step S2 is specifically included：
S201, the height h for first determining each road semi-finished product conical surface(k+1)、h(k+2)、.....、h(n-1)；
S202, straight wall determined divided by vertical wall section perimeter of section by the difference in areas of part total surface area and cone surface which area again
Highly, the height of the straight wall obtains semi-finished product overall height H plus the height of the semi-finished product conical surface(k+1)、H(k+2)、.....、H(n-1)；
S203, the data that each step is calculated more than, box part is completed by setting up the stretching Mathematical Modeling of each drawing sequence
Drawing and forming is deep frustum type part.
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| CN201611069502.5A CN106734487A (en) | 2016-11-29 | 2016-11-29 | A kind of mutiprogramming design manufacturing process of deep frustum type part |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893646A (en) * | 2021-02-07 | 2021-06-04 | 深圳市鸿源浩进科技有限公司 | Round-to-square drawing method and drawing die thereof |
| CN113523097A (en) * | 2021-07-19 | 2021-10-22 | 东南大学 | Forming method of deep square box-shaped part |
| CN114669683A (en) * | 2020-12-25 | 2022-06-28 | 义乌市易开盖实业公司 | Forming process and forming die for high-tensile straight-wall square tank |
| CN115319412A (en) * | 2022-08-08 | 2022-11-11 | 四川航天中天动力装备有限责任公司 | Processing method of shell with variable wall thickness |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669683A (en) * | 2020-12-25 | 2022-06-28 | 义乌市易开盖实业公司 | Forming process and forming die for high-tensile straight-wall square tank |
| CN112893646A (en) * | 2021-02-07 | 2021-06-04 | 深圳市鸿源浩进科技有限公司 | Round-to-square drawing method and drawing die thereof |
| CN113523097A (en) * | 2021-07-19 | 2021-10-22 | 东南大学 | Forming method of deep square box-shaped part |
| CN115319412A (en) * | 2022-08-08 | 2022-11-11 | 四川航天中天动力装备有限责任公司 | Processing method of shell with variable wall thickness |
| CN115319412B (en) * | 2022-08-08 | 2023-06-06 | 四川航天中天动力装备有限责任公司 | Wall thickness variable shell processing technique |
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Application publication date: 20170531 |