CN1212206C - Method and device of controlling force at edge of quadrate blank for deep pulling and extending process - Google Patents
Method and device of controlling force at edge of quadrate blank for deep pulling and extending process Download PDFInfo
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- CN1212206C CN1212206C CN 03133830 CN03133830A CN1212206C CN 1212206 C CN1212206 C CN 1212206C CN 03133830 CN03133830 CN 03133830 CN 03133830 A CN03133830 A CN 03133830A CN 1212206 C CN1212206 C CN 1212206C
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- CN
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- Prior art keywords
- force
- pad
- blank holder
- bight
- pressure
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Abstract
The present invention relates to a method and a device for controlling drawing force when a square stock is drawn by brute force. A male die is fixed on a base by a pressing plate fixed by a supporter fixed on the base, and the upper surface of the supporter is fixed by a connecting plate through screws in a connecting mode. A straight-edge area drawing ring, an elastic member A and a corner drawing ring of a drawing assembly are arranged between the male die and the supporter, the corner drawing ring is arranged in the straight-edge area drawing ring by a hollow groove, and the elastic member A is arranged between the lower side of the corner drawing ring and a chassis of the straight-edge area drawing ring. A connecting rod is fixed below the base, and the lower end of the connecting rod is provided with an adjusting plate, an elastic member B and a pushing plate. A pushing rod is arranged between the pushing plate and the straight-edge area drawing ring by a pressing plate and the base in a sliding fit mode, and a female die is arranged above the male die and is fixedly connected with a pressing machine. In the method for controlling the drawing force during the deep drawing, a combined drawing ring structure is adopted, the adjustment is executed through a spring to generate the drawing force, and therefore, different drawing force can be generated at different areas of the stock. The method has the advantages of simple structure, good drawing and shaping effect, material saving, etc.
Description
Technical field
The present invention relates to a kind of deep-drawing and press process technology, particularly a kind of stock of square deep-drawing pressure-pad-force control method and device.
Background technology
Economical with materials is one of major issue in the mechanical processing process, produce considerable waste material during traditional cylindrical part deep-drawing process using circular blank, and when adopting the stock of square deep-drawing, can obtain higher stock utilization, compare with traditional cylindrical part deep-drawing technology, stock utilization can improve more than 20%, thereby can obviously reduce production costs, and processing has more significance for precious metal sheet material cylindrical member.
In drawing process, with stock of square flanging zone separated into two parts, a part is flanging district, straight flange district, another part is flanging district, bight, if the bight pressure-pad-force is less than straight flange district pressure-pad-force, the amount of flow of metal from the bight to wall portion just increases, thereby can make a large amount of bights metal flow to wall portion, material is fully used, improves stock utilization, but when straight flange district pressure-pad-force increases to a certain degree, because the normal pressure in straight flange district increases, and the pressure-pad-force in bight hour, easily produces drawing crack or wrinkling during forming parts, so straight flange district pressure-pad-force and bight pressure-pad-force should satisfy certain rules.Part not by the prerequisite of drawing crack under, make the strain in bight reach maximum, thereby make corner material flow to wall portion fully, make the utilization rate maximum of material.
Straight flange district pressure-pad-force q
1(unit blank holder force) and bight pressure-pad-force q
2(unit blank holder force) ratio λ (λ=q
1/ q
2) be called the pressure-pad-force coefficient, for different pressure-pad-force coefficients, its forming materials effect difference when the pressure-pad-force coefficient is very big, easily cracks or ruptures; When the pressure-pad-force coefficient was very little, corner material flowed insufficient, did not reach the purpose of economical with materials.Therefore when carrying out mould and technological design, must select best pressure-pad-force coefficient, normally carry out to guarantee technical process.
Summary of the invention:
The objective of the invention is the problem that exists at prior art, provide a kind of simple in structure, drawing and moulding is effective, the stock of square deep-drawing pressure-pad-force control method and the device of economical with materials.
The present invention includes die, punch, the flanging assembly, base, pressing plate, supporting mass and connecting plate, described punch is fixed on the base by pressing plate, pressing plate is fixed by the supporting mass that is fixed on the base, on supporting mass, be connected and fixed with screw by connecting plate, the straight flange district blank holder of described flanging assembly, spring part and bight blank holder are arranged between punch and the supporting mass, the bight blank holder is contained in the straight flange district blank holder by dead slot, be provided with spring between the following and blank holder chassis, straight flange district of bight blank holder, connecting rod is fixed on below the base, adjustable plate is equipped with in the connecting rod lower end, rubber blanket and thrust plate, between thrust plate and straight flange district blank holder, be provided with push rod by pressing plate and base, and for being slidingly matched, die is arranged on the punch top and fixedlys connected with forcing press.Deep-drawing pressure-pad-force control device is with the blank holder separated into two parts, adopt straight flange district's blank holder and bight blank holder to act on the straight flange district and the bight of stock of square respectively, produce pressure-pad-force by regulating spring and rubber blanket, because straight flange district pressure-pad-force is greater than the bight pressure-pad-force, so forming effect well and economical with materials.
The control method of pressure-pad-force is during for the stock of square deep-drawing: adopt combined type blank holder structure, produce pressure-pad-force by regulating spring and rubber blanket, thereby can be implemented in the zones of different pressure-pad-force difference of blank, its principle is that a part is straight flange district pressure-pad-force Q with blank flanging zone separated into two parts
1, another part is bight pressure-pad-force Q
2, Q
1＞Q
2, Q
2Equal the elastic force of spring, P
1Be the elastic force of rubber blanket, Q
1And Q
2Satisfy Q
1=P
1-Q
2, because straight flange district unit blank holder force is greater than the bight unit blank holder force, therefore when draw forming, the metal flow momentum in bight is bigger than straight flange district, so just can make full use of the metal in bight, thereby has improved stock utilization and drawn effect.
Because adopt technique scheme, advantage of the present invention is:
1, realized straight flange district pressure-pad-force greater than the comer area pressure-pad-force, thereby made corner material inflow as much as possible draw die;
2, the present invention has simple in structurely, and pressure-pad-force is easy to adjust, promptly can regulate the pressure-pad-force size as long as change spring.
3, save material, drawing and moulding is effective, is difficult for drawing crack and wrinkling.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the section of structure of straight flange district blank holder;
Fig. 3 is the section of structure of bight blank holder
Fig. 4 is the vertical view of Fig. 2;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is a combination blank holder dynamic balance analysis chart;
Among the figure: 1 die, 2 drawn components, 3 punch, 4 straight flange district blank holders, 5 bight blank holders, 6 springs, 7 push rods, 8 rubber blankets, 9 adjustable plates, 10 thrust plates, 11 connecting rods, 12 bases, 13 pressing plates, 14 supporting masses, 15 connecting plates.
The specific embodiment
As shown in the figure, in conjunction with the embodiments technical scheme of the present invention is described further.
As shown in Figure 1, stock of square deep-drawing pressure-pad-force control device comprises die 1, flanging assembly, base 12, pressing plate 13, supporting mass 14 and connecting plate 15.Punch 3 is fixed on the base 12 by pressing plate 13, and pressing plate 13 is pressed abd fixed on the base 12 by supporting mass 14, and supporting mass 14 is by being bolted on the base 12, connecting plate 15 by screw be fixed on supporting mass 14 above.The flanging assembly is made up of straight flange district blank holder 4, bight blank holder 5, spring 6, push rod 7, rubber blanket 8, adjustable plate 9, thrust plate 10 and connecting rod 11.Straight flange district blank holder 4, bight blank holder 5, spring 6 are arranged between supporting mass 14 and the punch 3, and bight blank holder 5 is contained in the straight flange district blank holder 4 by dead slot, are provided with spring 6 between the chassis of bight blank holder 5 and straight flange district blank holder 4.Connecting rod 11 is fixed on below the base 12, adjustable plate 9, rubber blanket 8 and thrust plate 10 are equipped with in the lower end of connecting rod 11, fixing spacing by 2 nuts, be provided with two push rods 7 by pressing plate 13 and base 12 between thrust plate 10 and the straight flange district blank holder 4, and for being slidingly matched.Die 1 is arranged on the top of punch 3 and is connected and fixed with forcing press.In drawing process, blank is positioned at the blank holder upper surface, and die 1 is moving down (be equivalent to draw on the punch 3 and move) under the forcing press effect, with stock of square 2 pull and stretch in die 1; The control method of deep-drawing pressure-pad-force is that blank holder is resolved into two parts, promptly act on blank straight flange district pressure-pad-force (rubber blanket 8 and spring 6 active forces) and bight pressure-pad-force (spring 6 active forces), active force by regulating spring 6 and rubber blanket 8, can be implemented in the zones of different pressure-pad-force difference of blank, realize the reasonable distribution of pressure-pad-force, make straight flange district unit blank holder force greater than the bight unit blank holder force, the metal flow momentum that makes the bight is bigger than straight flange district, so just can make full use of the metal in bight, improve stock utilization and reach 20%.Adopt the application example of stock of square deep-drawing processing cylindrical member as follows.
| Billet size/mm | Drawn component diameter/mm | Sheet thickness/mm | Drawing ratio | Drawing coefficient |
| 80×80 | 50 | 1 | 1.6 | 0.625 |
| 100×100 | 50 | 1 | 2 | 0.5 |
| 120×120 | 50 | 1 | 2.4 | 0.42 |
Claims (2)
1, stock of square deep-drawing pressure-pad-force control method, it is characterized in that, the control method of described deep-drawing pressure-pad-force is: adopt combined type blank holder structure, produce pressure-pad-force by regulating spring and rubber blanket, thereby can be implemented in the zones of different pressure-pad-force difference of blank, its principle is that a part is straight flange district pressure-pad-force Q with blank flanging zone separated into two parts
1, another part is bight pressure-pad-force Q
2, Q
1＞Q
2, Q
2Equal the elastic force of spring, P
1Be the elastic force of rubber blanket, Q
1And Q
2Satisfy Q
1=P
1-Q
2, because straight flange district unit blank holder force is greater than the bight unit blank holder force, therefore when draw forming, the metal flow momentum in bight is bigger than straight flange district, so just can make full use of the metal in bight, thereby has improved stock utilization and drawn effect.
2, stock of square deep-drawing pressure-pad-force control device, it is characterized in that, this device comprises die, punch, the flanging assembly, base, pressing plate, supporting mass and connecting plate, described punch is fixed on the base by pressing plate, pressing plate is fixed by the supporting mass that is fixed on the base, on supporting mass, be connected and fixed with screw by connecting plate, the straight flange district blank holder of described flanging assembly, spring part and bight blank holder are arranged between punch and the supporting mass, the bight blank holder is contained in the straight flange district blank holder by dead slot, be provided with spring between the following and blank holder chassis, straight flange district of bight blank holder, connecting rod is fixed on below the base, adjustable plate is equipped with in the connecting rod lower end, rubber blanket and thrust plate, between thrust plate and straight flange district blank holder, be provided with push rod by pressing plate and base, and for being slidingly matched, die is arranged on the punch top and fixedlys connected with forcing press, deep-drawing pressure-pad-force control device is with the blank holder separated into two parts, adopt straight flange district's blank holder and bight blank holder to act on the straight flange district and the bight of stock of square respectively, produce pressure-pad-force by regulating spring and rubber blanket, so straight flange district pressure-pad-force is greater than the bight pressure-pad-force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133830 CN1212206C (en) | 2003-06-27 | 2003-06-27 | Method and device of controlling force at edge of quadrate blank for deep pulling and extending process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133830 CN1212206C (en) | 2003-06-27 | 2003-06-27 | Method and device of controlling force at edge of quadrate blank for deep pulling and extending process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1462657A CN1462657A (en) | 2003-12-24 |
| CN1212206C true CN1212206C (en) | 2005-07-27 |
Family
ID=29748513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03133830 Expired - Fee Related CN1212206C (en) | 2003-06-27 | 2003-06-27 | Method and device of controlling force at edge of quadrate blank for deep pulling and extending process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1212206C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722231B (en) * | 2008-10-24 | 2012-01-04 | 厦门隆山元交通器材有限公司 | Drawing shaping die of deep drawing part |
| CN107824713A (en) * | 2017-11-16 | 2018-03-23 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of drawing process that asymmetric pressure-pad-force is eliminated suitable for deep parabola drip molding |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357594A (en) * | 2011-08-16 | 2012-02-22 | 山西惠丰机械工业有限公司 | Drawing die for compensating for wall thickness of part |
| CN103480730A (en) * | 2012-06-13 | 2014-01-01 | 江苏龙城精锻有限公司 | Claw pole red trimming and punching compound die frame |
| CN109433883B (en) * | 2018-12-20 | 2024-01-23 | 安徽省巢湖铸造厂有限责任公司 | Automatic edge rolling machine for T-shaped bolt blank profiling |
| CN109530518B (en) * | 2018-12-29 | 2023-05-30 | 无锡市振华亿美嘉科技有限公司 | Lock support three-action type stretching machine and stretching method |
| CN114433703B (en) * | 2021-12-15 | 2023-04-11 | 福建工程学院 | Variable pressure device and application |
-
2003
- 2003-06-27 CN CN 03133830 patent/CN1212206C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722231B (en) * | 2008-10-24 | 2012-01-04 | 厦门隆山元交通器材有限公司 | Drawing shaping die of deep drawing part |
| CN107824713A (en) * | 2017-11-16 | 2018-03-23 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of drawing process that asymmetric pressure-pad-force is eliminated suitable for deep parabola drip molding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1462657A (en) | 2003-12-24 |
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