CN116765236A - Follow-up supported single-point incremental forming device and method for plate - Google Patents
Follow-up supported single-point incremental forming device and method for plate Download PDFInfo
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- CN116765236A CN116765236A CN202310820731.XA CN202310820731A CN116765236A CN 116765236 A CN116765236 A CN 116765236A CN 202310820731 A CN202310820731 A CN 202310820731A CN 116765236 A CN116765236 A CN 116765236A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000008093 supporting effect Effects 0.000 claims description 48
- 230000000750 progressive effect Effects 0.000 claims description 30
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000001976 improved effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007652 sheet-forming process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to the technical field of incremental forming processing of plate materials, and discloses a single-point incremental forming device for a plate material with a follow-up support. The plate fixing system is composed of a pressing plate, a fixing support plate, a guide post and a fixing base and is used for fixing the plate. The follow-up support system is composed of a follow-up support plate, a follow-up support plate base plate and a digital hydraulic cylinder and is used for follow-up support in the plate forming process. Through reasonable clearance control between shaping instrument and the backup pad, adopt reasonable shaping instrument processing orbit, can effectively promote the homogeneity of shaping part thickness.
Description
Technical Field
The invention belongs to the technical field of incremental forming processing of plates, and particularly relates to a single-point incremental forming device and a single-point incremental forming method for a plate supported by follow-up support.
Background
At present, the plate incremental forming technology is a rapid manufacturing technology integrating a computer technology, a numerical control technology and a plastic forming technology. And generating a processing track according to the three-dimensional data model of the product, so as to control a processing tool with a simple shape, continuously carrying out local plastic processing on the metal plate, and finally accumulating to form the geometric shape of the product.
The incremental forming of the plate material can be divided into single-point incremental forming and double-point incremental forming according to the existence of the die support. When single-point progressive forming is carried out, the plate material has no support; and when the double-point progressive forming is carried out, a supporting die is required to be added to the bottom of the plate. Single point progressive forming is truly modeless, as opposed to twin point progressive forming, but the precision of the formed part is lower. To overcome this problem, double-sided progressive forming has been developed, i.e. two sets of control systems are used to control two forming tools to form a sheet respectively on both sides of the formed sheet, and the process can improve the accuracy of the sheet without requiring a die, but the equipment and control are relatively complex.
Through the above analysis, the problems and defects existing in the prior art are as follows:
1. forming precision problem:
in the single-point progressive forming and the double-point progressive forming, the precision of formed parts is lower due to uneven local plastic processing force and supporting force applied to the plate. This phenomenon is particularly evident in single point progressive forming, and due to the lack of a supporting die, the plate is easy to spring back and locally deform in the forming process, thereby affecting the precision of formed parts.
2. Equipment and control complexity problems:
although the double-sided incremental forming technology can improve the precision of the plate material, the equipment and the control system are complex. In the double-sided progressive forming process, two sets of forming tools are required to be controlled simultaneously to form the plate material, so that the forming equipment is required to have higher synchronism and accuracy. In addition, the position and pressure of the forming tool also need to be monitored and adjusted in real time during the forming process, which clearly increases the complexity of the control system.
3. Forming time and cost issues:
existing sheet incremental forming techniques typically require long forming times, particularly when large, complex parts are produced, which can take hours or even days. This not only reduces the production efficiency but also increases the production cost. In addition, sheet incremental forming techniques are also relatively costly in terms of equipment purchase, maintenance, and operation due to the complexity of the equipment and control systems.
4. Material adaptability problem:
the existing plate incremental forming technology is mainly applicable to metal plates, and has poor adaptability to certain special materials (such as high-strength steel, superplastic materials and the like). The materials can have problems of cracks, weak areas and the like in the forming process, and the quality and the performance of formed parts are affected.
5. Technical maturity problem:
although sheet incremental forming technology has achieved some success in laboratory and some industrial production, its maturity and extent of popularization have yet to be improved compared to conventional stamping and forming technology. This means that in practical production, many technical difficulties and challenges that have not yet been found may need to be overcome.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a follow-up supported single-point incremental forming device and a method thereof.
The invention is realized in such a way that a follow-up supported single-point incremental forming device for a plate material is provided with:
a pressing plate;
the pressing plate is fixed on two sides of the fixed supporting plate, a plate material is fixed between the pressing plate and the fixed supporting plate, a forming tool is fixed at the upper end of the plate material, the bottom of the fixed supporting plate is fixed with a follow-up supporting plate and a follow-up supporting plate backing plate, the fixed supporting plate is fixed on the fixed base through a guide pillar, a digital hydraulic cylinder is fixedly installed at the bottom of the follow-up supporting plate backing plate, and the digital hydraulic cylinder is linearly connected with a digital hydraulic cylinder control system.
Further, the pressing plate, the fixed supporting plate, the guide post and the fixed base form a plate fixing system for fixing the plate.
Further, the follow-up support plate backing plate and the digital hydraulic cylinder form a follow-up support system which is used for follow-up support in the plate forming process.
Further, the single-point progressive forming of the plate material of the follow-up support comprises the following specific steps:
(1) Establishing a three-dimensional geometric model of the formed part by adopting three-dimensional CAD/CAM software;
(2) CAM modules adopting three-dimensional CAD/CAM software or special CAM software for writing contour processing programs;
(3) Fixing the device on a triaxial numerical control machine tool, adjusting the follow-up support plate to be flush with the upper surface of the fixed support plate through a digital hydraulic cylinder, and clamping the plate;
(4) Setting a pressure threshold value and a displacement amount of a digital hydraulic cylinder, namely after the pressure applied to the digital hydraulic cylinder is larger than the threshold value, driving a follow-up supporting plate to downwards move by a fixed displacement amount by a hydraulic rod of the digital hydraulic cylinder, wherein the displacement amount is equal to the layer feeding depth of a forming tool, and supporting the plate is kept;
(5) Applying the machining program to a numerical control machine tool, and forming the plate by a forming tool under program drive; after forming one layer, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, the hydraulic rod of the digital hydraulic cylinder drives the follow-up supporting plate to move downwards by a fixed displacement, and the forming tool is supported to form the next layer until the forming is finished.
Further, the building of the three-dimensional geometric model of the formed part is specifically as follows: a three-dimensional CAD model of a conical cup with a sidewall inclination of 60 °, a radius of 100m, and an opening size of 100mm was built in UGNX19.0 software.
Further, the writing of the contour machining program specifically includes: a tooling module in UGNX19.0 software generates progressive contoured tooling trajectories with a feed depth of 0.5mm between each tooling layer.
Further, the device is fixed on a triaxial numerical control machine tool, the follow-up support plate is adjusted to be flush with the upper surface of the fixed support plate through the digital hydraulic cylinder, and the plate is clamped; an aluminum alloy 1060 plate with the thickness of 1.0mm is adopted, the plate is blanked into 150 multiplied by 150mm, the geometric center of the plate is overlapped with the geometric center of the forming clamp, and the periphery of the plate is pressed for clamping by 15 mm.
Further, the pressure threshold value during progressive forming pressing is obtained through numerical simulation, the pressure threshold value of the digital hydraulic cylinder is set to be the value, and the displacement is set to be minus 0.5mm.
Further, the contour machining program compiled by UGNX19.0 is applied to a numerical control machine tool, and a forming tool forms the plate under the drive of the program; after forming one layer, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, the hydraulic rod of the digital hydraulic cylinder drives the follow-up supporting plate to move downwards by 0.5mm, and the forming tool is supported to form the next layer until the forming is finished.
In combination with the technical scheme and the technical problems to be solved, the technical scheme to be protected has the following advantages and positive effects:
first, with the follow-up backup pad support single-point incremental forming in-process board of digital hydraulic cylinder control, improved the problem that single-point incremental forming part precision is low, and need not the mould to support, can realize the progressive complex part of shaping of no mould. In addition, the invention can also remarkably improve the forming performance of the plate and improve the problem of uneven thickness of the plate.
Secondly, the single-point incremental forming of the sheet material is supported by adopting the follow-up of the digital hydraulic cylinder, a supporting die is not needed, meanwhile, compared with double-sided incremental forming equipment and control, the formed part has better precision, and the forming process can remarkably improve the forming performance of the sheet material. In addition, through reasonable clearance between control forming tool and the backup pad, adopt reasonable forming tool processing orbit, can effectively promote the homogeneity of forming part thickness. The invention is particularly significant for improving the forming limit of materials and realizing progressive forming processing of small-to-medium batches of products with complex shapes.
Thirdly, as inventive supplementary evidence of the claims of the present invention, the following important aspects are also presented:
the single-point progressive plate forming device with the follow-up support adopts an innovative design, and realizes the single-point progressive forming of the plate by combining components such as a pressing plate, a fixed support plate, a follow-up support plate, a digital hydraulic cylinder and the like. The technical effects and advantages of this device are mainly represented by the following aspects:
1. improving the forming precision:
the follow-up supporting system can provide real-time and adjustable supporting force in the sheet forming process, and is beneficial to reducing spring rebound and local deformation phenomena of the sheet. Compared with the traditional single-point incremental forming device, the follow-up supported single-point incremental forming device for the plate can remarkably improve the precision of formed parts.
2. Simplifying the equipment structure and a control system:
compared with the double-sided incremental forming technology, the device has simpler equipment structure and control system, and reduces the cost of equipment purchase, maintenance and operation.
3. Flexibility and adaptability:
because the digital hydraulic cylinder control system is adopted, the device can adjust the output force of the digital hydraulic cylinder in real time according to different plate materials and forming requirements, and realizes the follow-up support of the plate. This allows for a high flexibility and adaptability of the device, which can be adapted to different types and sizes of sheet metal forming.
4. And (3) reducing the mould requirement:
the single-point progressive plate forming device with the follow-up support does not need a special forming die, so that the cost of die manufacturing and replacement can be reduced, and the universality of equipment is improved.
5. The production efficiency is improved:
by adopting the follow-up supporting system, the device can realize faster forming speed while ensuring forming precision. Compared with the traditional plate incremental forming technology, the device is expected to improve the production efficiency, thereby reducing the production cost.
In conclusion, the follow-up supported single-point incremental forming device for the sheet material has obvious advantages in the aspects of forming precision, equipment structure, forming speed, cost and the like, and is expected to bring a more efficient and economic solution to the field of sheet material forming.
Drawings
FIG. 1 is a schematic diagram of a single point progressive forming apparatus for a sheet material with a follow-up support according to an embodiment of the present invention;
in the figure: 1. a fixed support plate; 2. a guide post; 3. a fixed base; 4. a digital hydraulic cylinder; 5. plate material; 6. a forming tool; 7. a pressing plate; 8. a follow-up supporting plate backing plate; 9. a follow-up support plate; 10. a digital hydraulic cylinder control system.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the single-point incremental forming device for a plate with a follow-up support provided by the embodiment of the invention is provided with: the device comprises a fixed support plate 1, a guide post 2, a fixed base 3, a digital hydraulic cylinder 4, a plate 5, a forming tool 6, a pressing plate 7, a follow-up support plate backing plate 8, a follow-up support plate 9 and a digital hydraulic cylinder control system 10.
The pressing plates 7 are fixed on two sides of the fixed support plate 1, a plate material 5 is fixed between the pressing plates 7 and the fixed support plate 1, a forming tool 6 is fixed at the upper end of the plate material 5, a follow-up support plate backing plate 8 and a follow-up support plate backing plate 8 are fixed at the bottom of the fixed support plate 1, the fixed support plate 1 is fixed on the fixed base 3 through the guide post 2, a digital hydraulic cylinder 4 is fixedly arranged at the bottom of the follow-up support plate backing plate 8, and the digital hydraulic cylinder 4 is linearly connected with the digital hydraulic cylinder control system 10.
The pressing plate 7, the fixed supporting plate 1, the guide post 2 and the fixed base 3 form a plate 5 fixing system for fixing the plate 5.
The follow-up support system is composed of a follow-up support plate base plate 8, a follow-up support plate base plate 8 and a digital hydraulic cylinder 4 and is used for follow-up support in the forming process of the plate 5.
The working principle of the device is as follows:
1. in the initialization stage, the digital hydraulic cylinder 4 is contracted, the follow-up support plate backing plate 8 and the follow-up support plate 9 are in a contracted state, the plate 5 is fixed by the pressure plate 7 and the fixed support plate 1, and the forming tool 6 is positioned at the upper end of the plate 5.
2. The digital hydraulic cylinders 4extend to lift the follow-up support plate base plate 8 and the follow-up support plate 9 to support the plate 5, and the pressing plate 7 and the fixed support plate 1 apply proper pressure to the plate 5, so that the plate 5 starts to deform around the forming tool 6.
3. In the forming process, the lifting speed of the digital hydraulic cylinder 4 is slower, the follow-up support plate backing plate 8 and the follow-up support plate 9 follow-up support the deformation of the plate 5, and meanwhile, certain pressure is applied to prevent the plate 5 from being excessively deformed, and the lifting of the digital hydraulic cylinder 4 is accurately controlled by the digital hydraulic cylinder control system 10, so that the incremental forming of the plate 5 is realized.
4. At the end of forming, the digital hydraulic cylinder 4 stops extending, the follow-up support plate backing plate 8 and the follow-up support plate 9 stop rising, and the plate 5 is formed.
The device utilizes the digital hydraulic cylinder 4 to accurately control the lifting of the follow-up support plate backing plate 8 and the follow-up support plate 9, realizes the accurate incremental forming of the plate 5, and can obtain high-quality formed parts. The digital hydraulic cylinder control system 10 is a key control device for precisely controlling the operation and the lifting speed of the digital hydraulic cylinder 4.
The single-point incremental forming of the plate 5 supported by the follow-up support comprises the following specific steps:
(1) Establishing a three-dimensional geometric model of the formed part by adopting three-dimensional CAD/CAM software;
(2) CAM modules adopting three-dimensional CAD/CAM software or special CAM software for writing contour processing programs;
(3) The device is fixed on a triaxial numerical control machine tool, a follow-up support plate backing plate 8 is adjusted to be flush with the upper surface of a fixed support plate 1 through a digital hydraulic cylinder 4, and a plate material 5 is clamped;
(4) Setting a pressure threshold value and a displacement amount of the digital hydraulic cylinder 4, namely after the pressure applied to the digital hydraulic cylinder 4 is larger than the threshold value, driving the follow-up support plate base plate 8 to move downwards by a fixed displacement amount by a hydraulic rod of the digital hydraulic cylinder 4, wherein the displacement amount is equal to the layer feeding depth of a forming tool, and supporting the plate 5 is kept;
(5) Applying the machining program to a numerical control machine tool, and forming the plate 5 by a forming tool under the drive of the program; after forming one layer, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, and the hydraulic rod of the digital hydraulic cylinder 4 drives the follow-up support plate base plate 8 to move downwards by a fixed displacement, so as to support the forming tool to form the next layer until the forming is finished.
The working principle and the steps of the invention are as follows: the method for establishing the three-dimensional geometric model of the formed part comprises the following specific steps: a three-dimensional CAD model of a conical cup with a sidewall inclination of 60 °, a radius of 100m, and an opening size of 100mm was built in UGNX19.0 software.
The method comprises the following steps of: a tooling module in UGNX19.0 software generates progressive contoured tooling trajectories with a feed depth of 0.5mm between each tooling layer.
The device is fixed on a triaxial numerical control machine tool, a follow-up support plate backing plate 8 is adjusted to be flush with the upper surface of a fixed support plate 1 through a digital hydraulic cylinder 4, and a plate material 5 is clamped; an aluminum alloy 1060 plate with the thickness of 1.0mm is adopted, the plate 5 is blanked into 150 multiplied by 150mm, the geometric center of the plate 5 is overlapped with the geometric center of a forming clamp, and the periphery of the plate 5 is pressed for clamping by 15 mm.
The pressure threshold value during progressive forming pressing is obtained through numerical simulation, the pressure threshold value of the digital hydraulic cylinder 4 is set to be the value, and the displacement is set to be minus 0.5mm.
The contour machining program compiled by UGNX19.0 is applied to a numerical control machine tool, and a forming tool forms the plate 5 under the drive of the program; after forming one layer, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, the hydraulic rod of the digital hydraulic cylinder 4 drives the follow-up support plate base plate 8 to move downwards by 0.5mm, and the forming tool is supported to form the next layer until the forming is finished.
The embodiment of the invention is applied to incremental forming of the plate.
Example 1:
in this embodiment, a follow-up supported single point sheet incremental forming apparatus is used to manufacture automotive housing parts. The complex curved surface shape of the automobile shell part is considered, and the forming precision requirement is high.
The equipment comprises the following components:
the plate fixing system is composed of a pressing plate, a fixing support plate, a guide post and a fixing base.
The follow-up supporting plate, the follow-up supporting plate backing plate and the digital hydraulic cylinder form a follow-up supporting system.
The forming process comprises the following steps:
1) The metal plate of the automobile shell part is fixed between the material pressing plate and the fixed supporting plate.
2) A forming tool is used to perform localized plastic working on the sheet material.
3) The digital hydraulic cylinder control system adjusts the supporting force of the follow-up supporting plate in real time according to the position of the forming tool, and ensures that the plate is properly supported in the forming process.
4) Repeating the steps until the forming of the whole automobile shell part is completed.
In the embodiment, the single-point incremental forming device for the plate supported by the follow-up support can effectively improve the forming precision of automobile shell parts, and meanwhile, the equipment and production cost are reduced.
Example 2:
in this embodiment, a follow-up supported single point sheet incremental forming apparatus is used to manufacture structural parts of an aircraft. Because the structural parts of the aircraft bear larger load, the requirements on forming precision and material performance are higher.
The equipment comprises the following components:
the plate fixing system is composed of a pressing plate, a fixing support plate, a guide post and a fixing base.
The follow-up supporting plate, the follow-up supporting plate backing plate and the digital hydraulic cylinder form a follow-up supporting system.
The forming process comprises the following steps:
1) The high-strength metal plate of the aircraft structural part is fixed between the material pressing plate and the fixed supporting plate.
2) A forming tool is used to perform localized plastic working on the sheet material.
3) The digital hydraulic cylinder control system adjusts the supporting force of the follow-up supporting plate in real time according to the position of the forming tool, ensures that the plate is properly supported in the forming process, and avoids the defects such as cracks.
4) Repeating the steps until the formation of the whole aircraft structural part is completed.
In the embodiment, the single-point incremental forming device for the plate supported by the follow-up support can effectively improve the forming precision of structural parts of the aircraft, and meanwhile, the material performance is ensured not to be damaged. In addition, the device has higher production efficiency, and is favorable for reducing the manufacturing cost of structural parts of the aircraft. The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a sheet material single-point incremental forming device of follow-up support which characterized in that, the sheet material single-point incremental forming device of follow-up support is equipped with:
a pressing plate;
the pressing plate is fixed on two sides of the fixed supporting plate, a plate material is fixed between the pressing plate and the fixed supporting plate, a forming tool is fixed at the upper end of the plate material, the bottom of the fixed supporting plate is fixed with a follow-up supporting plate and a follow-up supporting plate backing plate, the fixed supporting plate is fixed on the fixed base through a guide pillar, a digital hydraulic cylinder is fixedly installed at the bottom of the follow-up supporting plate backing plate, and the digital hydraulic cylinder is linearly connected with a digital hydraulic cylinder control system.
2. The follow-up supported single-point progressive forming device for the plate material, as claimed in claim 1, wherein the pressing plate, the fixed supporting plate, the guide post and the fixed base form a plate material fixing system for fixing the plate material.
3. The single point progressive forming device for plate material of follow-up support according to claim 1, wherein the follow-up support plate, the backing plate of the follow-up support plate and the digital hydraulic cylinder form a follow-up support system for follow-up support in the plate material forming process.
4. A single point incremental forming method for a sheet material supported by a follow-up support as claimed in claim 1, wherein the single point incremental forming method for a sheet material supported by a follow-up support comprises the following specific steps:
(1) Establishing a three-dimensional geometric model of the formed part by adopting three-dimensional CAD/CAM software;
(2) CAM modules adopting three-dimensional CAD/CAM software or special CAM software for writing contour processing programs;
(3) Fixing the device on a triaxial numerical control machine tool, adjusting the follow-up support plate to be flush with the upper surface of the fixed support plate through a digital hydraulic cylinder, and clamping the plate;
(4) Setting a pressure threshold value and a displacement amount of a digital hydraulic cylinder, namely after the pressure applied to the digital hydraulic cylinder is larger than the threshold value, driving a follow-up supporting plate to downwards move by a fixed displacement amount by a hydraulic rod of the digital hydraulic cylinder, wherein the displacement amount is equal to the layer feeding depth of a forming tool, and supporting the plate is kept;
(5) Applying the machining program to a numerical control machine tool, and forming the plate by a forming tool under program drive; after forming one layer, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, the hydraulic rod of the digital hydraulic cylinder drives the follow-up supporting plate to move downwards by a fixed displacement, and the forming tool is supported to form the next layer until the forming is finished.
5. The following supported single point progressive forming method of sheet material of claim 4, wherein the establishing a three-dimensional geometric model of the formed part is specifically: a three-dimensional CAD model of a conical cup with a sidewall inclination of 60 °, a radius of 100m, and an opening size of 100mm was built in UGNX19.0 software.
6. The following supported single point progressive forming method of sheet material of claim 4, wherein the writing of the contour machining program is specifically as follows: a tooling module in UGNX19.0 software generates progressive contoured tooling trajectories with a feed depth of 0.5mm between each tooling layer.
7. The single-point progressive forming method of the follow-up supported plate material, as claimed in claim 4, characterized in that the device is fixed on a three-axis numerical control machine tool, the follow-up supported plate is adjusted to be flush with the upper surface of the fixed supporting plate through a digital hydraulic cylinder, and the plate material is clamped; an aluminum alloy 1060 plate with the thickness of 1.0mm is adopted, the plate is blanked into 150 multiplied by 150mm, the geometric center of the plate is overlapped with the geometric center of the forming clamp, and the periphery of the plate is pressed for clamping by 15 mm.
8. The single-point progressive forming method of a follow-up supported plate material according to claim 4, wherein the pressure threshold value during progressive forming pressing is obtained through numerical simulation, the pressure threshold value of the digital hydraulic cylinder is set to be the value, and the displacement is set to be minus 0.5mm.
9. The single point progressive forming method for plate material of follow-up support as claimed in claim 4, wherein the contour machining program compiled by UGNX19.0 is applied to a numerical control machine tool, and the forming tool forms the plate material under the drive of the program.
10. The single-point progressive forming method of the follow-up supporting plate according to claim 9, wherein after the forming of one layer is finished, in the process of pressing down the tool, the pressing down force is larger than the pressure threshold value set by the hydraulic cylinder, the hydraulic rod of the digital hydraulic cylinder drives the follow-up supporting plate to move downwards by 0.5mm, and the forming tool is supported to form the next layer until the forming is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310820731.XA CN116765236A (en) | 2023-07-06 | 2023-07-06 | Follow-up supported single-point incremental forming device and method for plate |
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| CN202310820731.XA CN116765236A (en) | 2023-07-06 | 2023-07-06 | Follow-up supported single-point incremental forming device and method for plate |
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| CN116765236A true CN116765236A (en) | 2023-09-19 |
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| CN202310820731.XA Pending CN116765236A (en) | 2023-07-06 | 2023-07-06 | Follow-up supported single-point incremental forming device and method for plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117620697A (en) * | 2023-12-07 | 2024-03-01 | 山东万象智能科技有限公司 | Z-axis linkage lifting platform, system and method for metal progressive forming |
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2023
- 2023-07-06 CN CN202310820731.XA patent/CN116765236A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117620697A (en) * | 2023-12-07 | 2024-03-01 | 山东万象智能科技有限公司 | Z-axis linkage lifting platform, system and method for metal progressive forming |
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