CN111421042A - Bidirectional drawing forming method - Google Patents
Bidirectional drawing forming method Download PDFInfo
- Publication number
- CN111421042A CN111421042A CN202010196342.0A CN202010196342A CN111421042A CN 111421042 A CN111421042 A CN 111421042A CN 202010196342 A CN202010196342 A CN 202010196342A CN 111421042 A CN111421042 A CN 111421042A
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- China
- Prior art keywords
- die
- upper die
- holder
- blank holder
- lower die
- Prior art date
- 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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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000002457 bidirectional effect Effects 0.000 title description 4
- 239000000463 material Substances 0.000 claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000007723 die pressing method Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000013589 supplement Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Images
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- 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
- B21D22/24—Deep-drawing involving two drawing operations having effects in opposite directions with respect to the blank
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a forming method of two-way drawing, which comprises the following steps: the method comprises the steps of placing a material sheet to be drawn into a positioning area of a lower die of a machine tool, controlling a slide block of the machine tool to drive an upper die to move downwards, forming a lower convex shape in the material sheet by an upper convex die, forming a convex shape on the material sheet by the lower convex die, driving the upper die to move downwards to a lower dead point by the slide block, and completing the die-punching forming.
Description
Technical Field
The invention relates to the technical field of stamping and forming methods of sheet metal parts, in particular to a forming method of bidirectional drawing.
Background
In the current production practice work, for sheet metal parts (such as some automobile floor parts and the like) with convex shapes at the upper part and the lower part, the existing forming method mainly comprises the following steps: (1) the manufacturing method comprises the steps of (1) manufacturing by a method of 'single-action drawing' or 'double-action drawing' through directly increasing process supplement, (2) manufacturing by a method of twice drawing; however, the conventional method has some disadvantages, mainly including large process supplement, easy wrinkling of the part surface, low material utilization rate, large number of dies and the like, and therefore, designing a forming method of bidirectional drawing meeting the production work requirements is a problem which needs to be solved urgently by technical personnel in the related field.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the invention relates to a two-way drawing forming method, which combines two single-action drawing structure dies together in a face-to-face mode, and combines a drawing female die and a blank holder into a component, namely, the blank holder of a lower die is also used as a female die for downward forming, and the blank holder of an upper die is also used as a female die for upward forming.
The method specifically comprises the following steps:
(1) firstly, a die is installed and fixed in a machine tool, a lower die is fixed on a workbench according to requirements, and an upper die is fixed on a machine tool sliding block;
(2) placing a material sheet to be drawn into a positioning area of a lower die, namely a blank holder positioning area of the lower die;
(3) starting the machine tool, and controlling a machine tool slide block to drive the upper die to integrally move downwards;
(4) the upper die blank holder in the upper die presses the material sheet on the lower die blank holder in the lower die, the machine tool slide block continues to move downwards, and when the force of the lower die blank holder is greater than that of the upper die blank holder, the upper male die in the upper die acts on the material sheet to form a lower convex shape in the lower die blank holder, namely a lower forming female die area; the lower convex shape is formed, and meanwhile, the upper die blank holder is blocked with the upper die seat block through an upper die blocking block;
(5) after the lower convex shape is formed, the machine tool slide block drives the upper die to continue descending, and because the upper die blank holder is blocked with the upper die seat, the upper die integrally acts on the lower die blank holder in the lower die to move downwards, correspondingly, the lower convex die in the lower die acts on the material sheet to form the upper convex shape on the upper die blank holder, namely, the female die area of the upper die blank holder;
(6) when the machine tool slide block drives the upper die to move at the lower dead point, the lower die blank holder is blocked with the lower die base through the lower die blocking block, so that the upper die and the lower die are completely blocked, and the drawing forming is completed.
(7) When the force of the upper die pressing edge ring is larger than that of the lower die pressing edge ring, the forming process is the process of forming the upper bulge first and then forming the lower bulge.
As an improvement, the upper die and the lower die are arranged oppositely, the upper die comprises an upper die base connected with a machine tool slide block, the lower die comprises a lower die base connected with a workbench, an upper die blank holder and a lower die blank holder are arranged between the upper die base and the lower die base oppositely, and the upper die blank holder and the lower die blank holder are connected with the upper die base and the lower die base respectively through an upper pressure assembly and a lower pressure assembly.
As an improvement, a female die corresponding to the upper bulge forming is arranged in the upper die blank holder, and a female die corresponding to the lower bulge forming is arranged in the lower die blank holder.
As an improvement, the upper die blank holder moves relative to the upper die holder and the upper male die, and the lower die blank holder moves relative to the lower die holder and the lower male die.
As an improvement, an upper dead block corresponding to the upper die blank holder is arranged on the upper die base, and a lower dead block corresponding to the lower die blank holder is arranged on the lower die base.
As an improvement, two ends of the upper die blank holder and the lower die blank holder are also provided with travel screw rods connected with the upper die base and the lower die base.
As an improvement, the upper pressure assembly and the lower pressure assembly are machine tool air pressure or hydraulic ejector rods, nitrogen springs, spiral springs and polyurethane springs.
As an improvement, the lower male die is arranged on the lower die base and stretches towards the upper die base, and the upper male die is arranged on the upper die base and stretches towards the lower die base.
As an improvement, the upper male die and the lower male die are arranged in a staggered mode.
After adopting the structure, the invention has the following advantages: the method of the invention draws and molds the parts with up-down protrusions or two-way protrusions end to end respectively on a set of molds according to the sequence of actions, the process of the invention is reasonable, the parts have no wrinkling and small rebound, the quality of the parts is high, the process supplement is small, the material utilization rate is high, the number of the molds is small, and the manufacturing cost of the parts is low.
Drawings
FIG. 1 is a schematic view of the arrangement structure of a machine tool die in a forming method of two-way drawing of the invention.
As shown in the figure: 1. the device comprises a lower die, 1.1, a lower die blank holder, 1.2, a lower convex die, 1.3, a lower die upsetting block, 1.4, a lower pressure component, 1.5, a lower die base, 2, a workbench, 3, an upper die, 3.1, an upper die blank holder, 3.2, an upper convex die, 3.3, an upper die upsetting block, 3.4, an upper pressure component, 3.5, an upper die base, 4, a machine tool slide block, 5, a material sheet, 6 and a stroke screw rod.
Detailed Description
With the attached drawings, the forming method of the two-way drawing is characterized by comprising the following steps:
(1) firstly, a die is installed and fixed in a machine tool, a lower die 1 is fixed on a workbench 2 as required, and an upper die 3 is fixed on a machine tool slide block 4;
(2) placing a material sheet 5 to be subjected to drawing treatment into a positioning area of a lower die 1, namely a positioning area of a lower die blank holder 1.1;
(3) starting the machine tool, and controlling the machine tool slide block 4 to drive the upper die 3 to integrally move downwards;
(4) an upper die blank holder 3.1 in an upper die 3 presses the material sheet on a lower die blank holder 1.1 in a lower die 1, a machine tool slide block 4 continues to move downwards, and when the force of the lower die blank holder 1.1 is greater than that of the upper die blank holder 3.1, an upper male die 3.2 in the upper die acts on the material sheet 5 to form a lower convex shape in the lower die blank holder 1.1, namely a lower forming female die area; the lower convex shape is formed, and meanwhile, the upper die blank holder 3.1 is mound with the upper die base 3.5 through the upper die mound block 3.3;
(5) after the lower convex shape is formed, the machine tool slide block 4 drives the upper die 3 to continuously move downwards, and because the upper die blank holder 3.1 is blocked with the upper die base 3.5, the upper die 3 integrally acts on the lower die blank holder 1.1 in the lower die 1 to move downwards, correspondingly, the lower convex die 1.2 in the lower die 4 acts on the material sheet 5 to form the upper convex shape on the upper die blank holder 3.1, namely, the concave die area of the upper die blank holder 3.1;
(6) when the machine tool slide block 4 drives the upper die 3 to move at the lower dead point, the lower die blank holder 1.1 is completely blocked with the lower die base 1.5 through the lower die blocking block 1.3, so that the upper die and the lower die are completely blocked, and the drawing forming is completed.
(7) When the force of the upper die pressing edge ring 3.1 is larger than that of the lower die pressing edge ring 1.1, the forming process is the process of forming the upper bulge first and then forming the lower bulge.
As a preferred embodiment of this embodiment, the upper die 3 and the lower die 1 are arranged oppositely, the upper die 3 includes an upper die base 3.5 connected to a machine tool slide block 4, the lower die 1 includes a lower die base 1.5 connected to the workbench 2, an upper die blank holder 3.1 and a lower die blank holder 1.1 are arranged between the upper die base 3.5 and the lower die base 1.5, and the upper die blank holder 3.1 and the lower die blank holder 1.1 are connected to the upper die base 3.5 and the lower die base 1.5 through an upper pressure component 3.4 and a lower pressure component 1.4, respectively.
As a preferred embodiment of this embodiment, a concave die corresponding to the upper convex forming is arranged in the upper die blank holder 3.1, and a concave die corresponding to the lower convex forming is arranged in the lower die blank holder 1.1.
In a preferred embodiment of this embodiment, the upper die holder 3.1 is relatively movable with respect to the upper die holder 3.5 and the upper die 3.2, and the lower die holder 1.1 is relatively movable with respect to the lower die holder 1.5 and the lower die 1.2.
As a preferred embodiment of this embodiment, an upper block 3.3 corresponding to the upper mold binder 3.5 is disposed on the upper mold base 3.5, and a lower block 1.3 corresponding to the lower mold binder 1.1 is disposed on the lower mold base 1.5.
As a preferred embodiment of this embodiment, two ends of the upper mold blank holder 3.1 and the lower mold blank holder 1.1 are further provided with a stroke screw 6 connected with the upper mold base 3.5 and the lower mold base 1.5.
As a preferred embodiment of this embodiment, the upper pressure assembly 3.4 and the lower pressure assembly 1.4 are a machine tool pneumatic or hydraulic ram, a nitrogen spring, a coil spring, and a polyurethane spring.
As a preferred embodiment of this embodiment, the lower punch 1.2 is disposed on the lower die holder 1.5 and stretches towards the upper die holder 3.5, and the upper punch 3.2 is disposed on the upper die holder 3.5 and stretches towards the lower die holder 1.5.
In a preferred embodiment of this embodiment, the upper punch 3.2 and the lower punch 1.2 are arranged in a staggered manner.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A forming method of two-way drawing is characterized by comprising the following steps:
(1) firstly, a die is installed and fixed in a machine tool, a lower die is fixed on a workbench according to requirements, and an upper die is fixed on a machine tool sliding block;
(2) placing a material sheet to be drawn into a positioning area of a lower die, namely a blank holder positioning area of the lower die;
(3) starting the machine tool, and controlling a machine tool slide block to drive the upper die to integrally move downwards;
(4) the upper die blank holder in the upper die presses the material sheet on the lower die blank holder in the lower die, the machine tool slide block continues to move downwards, and when the force of the lower die blank holder is greater than that of the upper die blank holder, the upper male die in the upper die acts on the material sheet to form a lower convex shape in the lower die blank holder, namely a lower forming female die area; the lower convex shape is formed, and meanwhile, the upper die blank holder is blocked with the upper die seat block through an upper die blocking block;
(5) after the lower convex shape is formed, the machine tool slide block drives the upper die to continue descending, and because the upper die blank holder is blocked with the upper die seat, the upper die integrally acts on the lower die blank holder in the lower die to move downwards, correspondingly, the lower convex die in the lower die acts on the material sheet to form the upper convex shape on the upper die blank holder, namely, the female die area of the upper die blank holder;
(6) when the machine tool slide block drives the upper die to move at the lower dead point, the lower die blank holder is blocked with the lower die base through the lower die blocking block, so that the upper die and the lower die are completely blocked, and the drawing forming is completed.
(7) When the force of the upper die pressing edge ring is larger than that of the lower die pressing edge ring, the forming process is the process of forming the upper bulge first and then forming the lower bulge.
2. The forming method for the two-way drawing according to claim 1, wherein the upper die and the lower die are arranged oppositely, the upper die comprises an upper die holder connected with a machine tool slide block, the lower die comprises a lower die holder connected with a workbench, an upper die blank holder and a lower die blank holder are arranged oppositely between the upper die holder and the lower die holder, and the upper die blank holder and the lower die blank holder are respectively connected with the upper die holder and the lower die holder through an upper pressure assembly and a lower pressure assembly.
3. The forming method of two-way drawing according to claim 2, wherein a female die corresponding to the forming of the upper protrusion is provided in the upper die blank holder, and a female die corresponding to the forming of the lower protrusion is provided in the lower die blank holder.
4. The method of claim 2, wherein the upper die holder is relatively movable with respect to the upper die holder and the upper punch, and the lower die holder is relatively movable with respect to the lower die holder and the lower punch.
5. The forming method of the two-way drawing as claimed in claim 2, wherein the upper die base is provided with an upper upsetting block corresponding to the upper die blank holder, and the lower die base is provided with a lower upsetting block corresponding to the lower die blank holder.
6. The forming method of the two-way drawing as claimed in claim 2, wherein the two ends of the upper die blank holder and the lower die blank holder are further provided with a stroke screw connected with the upper die holder and the lower die holder.
7. The forming method of the two-way drawing according to claim 2, wherein the upper pressure assembly and the lower pressure assembly are machine tool pneumatic or hydraulic push rods, nitrogen springs, coil springs and polyurethane springs.
8. The forming method of the double-direction drawing as claimed in claim 2, wherein the lower male die is arranged on the lower die holder and is drawn towards the upper die holder, and the upper male die is arranged on the upper die holder and is drawn towards the lower die holder.
9. The forming method of the double-direction drawing according to claim 8, wherein the upper punch and the lower punch are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196342.0A CN111421042A (en) | 2020-03-19 | 2020-03-19 | Bidirectional drawing forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196342.0A CN111421042A (en) | 2020-03-19 | 2020-03-19 | Bidirectional drawing forming method |
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| Publication Number | Publication Date |
|---|---|
| CN111421042A true CN111421042A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010196342.0A Pending CN111421042A (en) | 2020-03-19 | 2020-03-19 | Bidirectional drawing forming method |
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| Country | Link |
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| CN (1) | CN111421042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378197A (en) * | 2021-12-30 | 2022-04-22 | 镇江仕德汽车零部件有限公司 | Automobile wheel casing supporting plate drawing die |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495657A (en) * | 2013-09-30 | 2014-01-08 | 大连益联金属成型有限公司 | Thermally-insulated shroud end cover stretching die |
| CN103846347A (en) * | 2014-03-15 | 2014-06-11 | 富士瑞鹄技研（芜湖）有限公司 | Drawing die for plate forming |
| CN110099760A (en) * | 2017-11-29 | 2019-08-06 | 阿勒冯斯哈尔股份有限公司 | The method and apparatus for being used to form crimping can end |
-
2020
- 2020-03-19 CN CN202010196342.0A patent/CN111421042A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495657A (en) * | 2013-09-30 | 2014-01-08 | 大连益联金属成型有限公司 | Thermally-insulated shroud end cover stretching die |
| CN103846347A (en) * | 2014-03-15 | 2014-06-11 | 富士瑞鹄技研（芜湖）有限公司 | Drawing die for plate forming |
| CN110099760A (en) * | 2017-11-29 | 2019-08-06 | 阿勒冯斯哈尔股份有限公司 | The method and apparatus for being used to form crimping can end |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378197A (en) * | 2021-12-30 | 2022-04-22 | 镇江仕德汽车零部件有限公司 | Automobile wheel casing supporting plate drawing die |
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Application publication date: 20200717 |
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| RJ01 | Rejection of invention patent application after publication |