CN114833250A - Die-free metal plate forming process and die-free metal plate forming system - Google Patents
Die-free metal plate forming process and die-free metal plate forming system Download PDFInfo
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- CN114833250A CN114833250A CN202110134942.9A CN202110134942A CN114833250A CN 114833250 A CN114833250 A CN 114833250A CN 202110134942 A CN202110134942 A CN 202110134942A CN 114833250 A CN114833250 A CN 114833250A
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- forming process
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 74
- 239000002184 metal Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- 238000003754 machining Methods 0.000 claims description 18
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 5
- 238000013178 mathematical model Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000003698 laser cutting Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
-
- 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
- B21D37/01—Selection of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a die-free metal plate forming process and a die-free metal plate forming system, wherein the die-free metal plate forming process is used for processing a metal plate part of an automobile sample car, and the die-free metal plate forming process comprises the following steps: s1, performing formability analysis and design on a sheet metal part; s2, manufacturing a mold and a forming blank holder according to the result of the formability analysis, and designing the peripheral shape of the sheet metal forming of the sheet metal part; s3, developing a technological processing path of the plate, matching a die-free forming device with a processing and positioning coordinate system of the plate, and counting a compensation value of the thickness of the plate; s4, processing the plate by using a die-free forming device; and S5, cutting, pre-positioning and cutting the plate processed in the step S4.
Description
Technical Field
The invention relates to a die-free metal plate forming process and a die-free metal plate forming system, in particular to a die-free metal plate forming process for machining automobile sample car parts.
Background
At present, some parts of automobiles, such as floor panels and the like, are high-precision thin-wall parts with complex part characteristics, the forming difficulty is high, and the size precision can influence the size chain of the whole automobile. At present, in the automobile part manufacturing industry, a steel or zinc-aluminum alloy die is generally adopted for punch forming when manufacturing the parts. The process of manufacturing the parts comprises the steps of digital-analog design, forming analysis, die design, die processing, die testing and repairing, part forming, laser cutting, manual shaping and the like.
The dieless sheet metal forming technology is suitable for processing sheet metal parts which are difficult to form in small batches and various types, and is generally applied to the fields of ships, aviation and white appliances in the prior art.
Disclosure of Invention
The technical problem to be solved in one aspect of the invention is how to solve the problems of long development period, high cost and inconvenient design change of the sheet metal parts of the automobile sample car.
In addition, other aspects of the present invention are directed to solving or alleviating other technical problems in the prior art.
The invention provides a dieless sheet metal forming process and a dieless sheet metal forming system, and particularly provides, according to an aspect of the invention:
the die-free metal plate forming process is used for machining metal plate parts of automobile sample vehicles and comprises the following steps:
s1: carrying out formability analysis and design on the sheet metal part;
s2: manufacturing a mould and a forming blank holder according to the result of the formability analysis, and designing the peripheral shape of the sheet metal forming of the sheet metal part;
s3: developing a technological processing path of the plate, matching a die-free forming device with a processing and positioning coordinate system of the plate, and counting a compensation value of the thickness of the plate;
s4: processing the plate by using a die-free forming device;
s5: the plate material processed through step S4 is cut and pre-positioned and cut.
Alternatively, according to an embodiment of the present invention, in step S1, the geometric size, shape and processing angle position of the sheet metal part are determined by a CAD mathematical model, and a forming reference plane for the die-less forming process is selected.
Alternatively, according to one embodiment of the present invention, only a male mold is manufactured in step S2.
Alternatively, according to an embodiment of the invention, the male mold is made of a polyurethane material.
Alternatively, according to an embodiment of the present invention, the contour forward reverse spinning path is adopted as the process machining path in step S3.
Alternatively, according to an embodiment of the present invention, the plate material is processed by setting the feeding amount, the forming rate, the forming pass, and the feed trajectory of the die-less forming apparatus in step S4.
Alternatively, according to an embodiment of the present invention, the sheet material processed through the step S4 is laser cut according to a three-dimensional digifax of the sheet metal part in the step S5.
Alternatively, according to an embodiment of the invention, the polyurethane material has a density of 0.75 g/cm 3 Or 1.13 g/cm 3 。
Alternatively, according to an embodiment of the present invention, the feeding amount of the moldless forming apparatus is set to 0.2 mm, and the forming rate is set to 8000 mm/min.
According to another aspect of the invention, the invention provides a die-free metal plate forming system, wherein the die-free metal plate forming system is used for machining the metal plate parts of the automobile sample vehicle and comprises a computer, a die manufacturing device, a die-free forming device and a cutting device, and the die-free metal plate forming system executes the die-free metal plate forming process.
The beneficial effects of the invention include:
1. the invention can realize the purpose of replacing the sheet metal soft mold part molding in the early sample vehicle trial production, and the trial production is completed by adopting the non-mold molding process to mold the part;
2. the die-free metal plate forming process can greatly reduce the development cost;
3. the invention reduces the development cost and period by eliminating the female die and only keeping the male die
4. The density adopted by the invention is 0.75 g/cm 3 Or 1.13 g/cm 3 The polyurethane material replaces No. 45 steel of a soft die part, so that the cutting workload of die processing is greatly reduced;
5. the invention can flexibly adapt to the change of part design by adjusting the parameters of the dieless metal plate forming process, such as feed quantity, forming speed, forming pass and feed track; without generating high die repair cost and period;
6. the method has wide application range, and various sheet metal parts related to trial production of the vehicle body of the early-stage sample vehicle can be processed according to the same steps by slightly changing the rules of the male die design and the forming process.
Drawings
The above and other features of the present invention will become apparent with reference to the accompanying drawings, in which,
fig. 1 shows a flow diagram of a proposed dieless sheet metal forming process according to one embodiment of the present invention.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like are used for descriptive and descriptive purposes only and not for purposes of indication or implication as to the relative importance of the respective components.
Referring to fig. 1, a flow diagram of a proposed dieless sheet metal forming process according to one embodiment of the invention is shown. The die-free metal plate forming process is used for early trial-manufacture development of a sample car, and can reduce the development cost to the maximum extent while ensuring the quality of the trial-manufacture parts of the sample car. The dieless sheet metal forming process according to the present invention includes 5 steps, steps 1 to 5 corresponding to S1 to S5, respectively.
Firstly, in step S1, formability analysis and design are performed, that is, a CAD model, in this embodiment, a UG-NX mathematical model, is used to perform parametric modeling on the target sheet metal part, so as to determine the geometric size, specific shape, machining and placing angle and position of the target sheet metal part, and select a forming datum plane of the target sheet metal part for the non-forming machining, where the forming datum plane is a non-machining plane of the non-forming, and is mainly used for matching the coordinate system of the non-forming equipment and the sheet material to be machined during the non-forming. According to the difference of the shapes and the sizes of the target sheet metal parts, the proper forming reference surface is selected, so that the feed time during machining can be reduced, and the machining cost is reduced.
In step S2, a mold and a molding binder for the dieless molding are designed and processed according to the analysis result in step S1. In a general extrusion process, a male die and a female die are generally respectively provided at both sides of a plate to be processed for processing the shape of the plate. In the embodiment, for the sheet material to be processed for the sheet metal parts, a generally adopted female die is eliminated, the side where the female die is generally placed is processed by the die-free forming, only a male die is reserved, and the male die is adopted with the density of 0.75 g/cm 3 Or 1.13 g/cm 3 Polyurethane material of (4)The steel No. 5 is manufactured, and the cutting workload of die processing can be reduced. In an embodiment not shown, the male mold can also be eliminated, leaving only the female mold to be processed. The forming blank holder is fixed on the periphery of the plate to be processed and used for holding the blank for manufacturing the sheet metal part, so that the effect of limiting a processing area is achieved, and the peripheral shape of the plate can be conveniently processed. In step S2, the peripheral edge shape of the sheet metal molding is also designed.
In step S3, a process machining path is developed, and a machining positioning coordinate system of the die-less forming machining device and the plate, that is, a machining origin of a machining tool of the matching device and a machining origin of the plate, is matched. In this embodiment, the forming is performed by using a contour forward-reverse spinning path. Firstly, carrying out contour line dispersion on the spatial characteristics of the vehicle body part to obtain a contour line path capable of specifically indicating the spatial characteristics of the vehicle body part, and then carrying out forward and reverse spinning according to the obtained contour line path, namely carrying out twice cutting along forward and reverse directions. By using the contour line forward and reverse spinning path, the rebound of the part can be reduced, and the thinning rate of the part is optimized.
In step S4, the sheet material is processed by the die-less forming processing equipment using the die-less forming method, in this embodiment, the sheet material is processed by setting the feeding amount, the forming rate, the forming pass and the feed path of the die-less forming equipment, the forming pass is the number of times of processing a certain shape feature of the sheet material into a target shape feature, and the thinning rate of the part can be optimized by selecting different numbers of forming passes for different shape features. Wherein, when processing the parts of the floor panel of the automobile sample car, the feeding amount is set to be 0.2 mm, and the forming speed is set to be 8000 mm/min.
In step S5, the three-dimensional digifax of the target sheet metal part is first input into a cutting device, and the sheet material processed in step S4 is first cut and pre-positioned according to the three-dimensional digifax, for example, a hole to be cut in the part is positioned, and then laser cutting is performed, so as to finally obtain a molded part.
The die-free metal plate forming process is particularly suitable for forming high-precision thin-wall metal plate parts with the thickness of less than or equal to 2.5 mm, such as automobile plates, stainless steel, aluminum alloy and the like.
The die-free sheet metal forming system is used for executing the die-free sheet metal forming process and comprises a computer, a die manufacturing device, a die-free forming device and a cutting device, wherein the computer is used for analyzing and designing the formability of a target sheet metal part, the die manufacturing device is used for manufacturing a required male die and a required forming blank holder, the die-free forming device is used for executing the die-free forming of a sheet material subjected to the die-free forming, and the cutting device is used for carrying out laser cutting on the sheet material subjected to the die-free forming.
The die-free metal plate forming process is used for the trial-manufacture development of the early-stage sample car, and can reduce the development cost and the development period to the maximum extent while ensuring the quality of the trial-manufacture parts of the sample car. The invention can carry out formability analysis and formability process development on the target automobile body sheet metal part by using a corresponding method, carries out forming according to the rule of design optimization, carries out inspection analysis on the obtained object, and finally completes automobile body trial production, thereby being particularly suitable for the development of small-batch and personalized early automobile bodies.
It should be understood that all of the above preferred embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which would occur to persons skilled in the art upon consideration of the above teachings, are intended to be within the scope of the invention.
Claims (10)
1. The die-free metal plate forming process is characterized by being used for machining automobile sample car metal plate parts and comprises the following steps:
s1: carrying out formability analysis and design on the sheet metal part;
s2: manufacturing a mould and a forming blank holder according to the result of the formability analysis, and designing the peripheral shape of the sheet metal forming of the sheet metal part;
s3: developing a technological processing path of the plate, matching a die-free forming device with a processing and positioning coordinate system of the plate, and counting a compensation value of the thickness of the plate;
s4: processing the plate by using a die-free forming device;
s5: the plate material processed through step S4 is cut and pre-positioned and cut.
2. The dieless sheet metal forming process of claim 1 wherein in step S1, the geometric size, shape and machining angle of placement of the sheet metal part are determined by a CAD mathematical model and a forming datum for the dieless forming process is selected.
3. The dieless sheet metal forming process of claim 1 wherein only a male die is manufactured in step S2.
4. The dieless sheet metal forming process of claim 3 wherein the male die is made of a polyurethane material.
5. The dieless sheet metal forming process of claim 1 wherein a contoured forward reverse spinning path is employed as the process tooling path in step S3.
6. The dieless sheet metal forming process of claim 1 wherein the sheet material is processed in step S4 by setting the feed, forming rate, forming passes and feed path of the dieless forming apparatus.
7. The dieless sheet metal forming process of claim 1 wherein in step S5 the sheet material processed through step S4 is laser cut according to a three-dimensional digital model of the sheet metal part.
8. The dieless sheet metal forming process of claim 4, wherein the polyurethane material has a density of 0.75 g/cm 3 Or 1.13 g/cm 3 。
9. The dieless sheet metal forming process of claim 6 wherein the die-less forming apparatus feed is set to 0.2 mm and the forming rate is set to 8000 mm/min.
10. A dieless sheet metal forming system for the machining of sheet metal parts of an automobile sample car, comprising a computer, a die making device, a dieless forming device and a cutting device, the dieless sheet metal forming system performing the dieless sheet metal forming process according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134942.9A CN114833250A (en) | 2021-02-01 | 2021-02-01 | Die-free metal plate forming process and die-free metal plate forming system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134942.9A CN114833250A (en) | 2021-02-01 | 2021-02-01 | Die-free metal plate forming process and die-free metal plate forming system |
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| CN114833250A true CN114833250A (en) | 2022-08-02 |
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| CN202110134942.9A Pending CN114833250A (en) | 2021-02-01 | 2021-02-01 | Die-free metal plate forming process and die-free metal plate forming system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592305Y (en) * | 2002-11-26 | 2003-12-17 | 湖北汽车工业学院 | Special shaping tool of die-free rapid shaping for metal plate |
| CN1524638A (en) * | 2003-02-27 | 2004-09-01 | 株式会社阿敏诺 | Forming method and equipment of thin metal sheet |
| CN1821910A (en) * | 2006-03-07 | 2006-08-23 | 华中科技大学 | Electromagnetic inching forming method and its device for plate moving coil |
| CN101318203A (en) * | 2008-06-24 | 2008-12-10 | 南京航空航天大学 | Electrical heating numerical control incremental forming processing method and device for plate |
| CN101920440A (en) * | 2010-07-05 | 2010-12-22 | 无锡市澳富特成型技术科研有限公司 | Quick manufacturing process of rotational moulding machine die |
-
2021
- 2021-02-01 CN CN202110134942.9A patent/CN114833250A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592305Y (en) * | 2002-11-26 | 2003-12-17 | 湖北汽车工业学院 | Special shaping tool of die-free rapid shaping for metal plate |
| CN1524638A (en) * | 2003-02-27 | 2004-09-01 | 株式会社阿敏诺 | Forming method and equipment of thin metal sheet |
| CN1821910A (en) * | 2006-03-07 | 2006-08-23 | 华中科技大学 | Electromagnetic inching forming method and its device for plate moving coil |
| CN101318203A (en) * | 2008-06-24 | 2008-12-10 | 南京航空航天大学 | Electrical heating numerical control incremental forming processing method and device for plate |
| CN101920440A (en) * | 2010-07-05 | 2010-12-22 | 无锡市澳富特成型技术科研有限公司 | Quick manufacturing process of rotational moulding machine die |
Non-Patent Citations (2)
| Title |
|---|
| 曹建国: "金属冲压成形工艺与模具设计", vol. 1, 31 July 2015, 中国铁道出版社, pages: 184 - 185 * |
| 赵向阳: "冲压工艺与模具设计", vol. 1, 28 February 2010, 哈尔滨工程大学出版社, pages: 299 - 300 * |
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