CN112620497A - Reverse local forming device and method for box-shaped part - Google Patents

Reverse local forming device and method for box-shaped part Download PDF

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Publication number
CN112620497A
CN112620497A CN202011516643.3A CN202011516643A CN112620497A CN 112620497 A CN112620497 A CN 112620497A CN 202011516643 A CN202011516643 A CN 202011516643A CN 112620497 A CN112620497 A CN 112620497A
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die
reverse
forming
box
shaped part
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CN112620497B (en
Inventor
周怀利
雷勇
郭嘉宝
田杜养
和雪莉
杨景捷
冯靖华
刘天超
王峰
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Csic Xi'an Dong Yi Science Technology & Industry Group Co ltd
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Csic Xi'an Dong Yi Science Technology & Industry Group Co ltd
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Priority claimed from CN202011516643.3A external-priority patent/CN112620497B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20Deep-drawing
    • B21D22/201Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/06Stripping-off 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 process forming, and particularly relates to a reverse local forming device and method for a box-shaped part. The invention comprises a reverse forming device for forming and a shape correcting device for correcting; the reverse forming device and the shape correcting device are respectively connected to the press machine; the reverse forming device comprises a reverse forming male die and a reverse forming lower die matched with the reverse forming male die; the shape correcting device comprises a shape correcting upper die and a shape correcting lower die matched with the shape correcting upper die, and the reverse forming lower die and the shape correcting lower die are identical in structure. According to the invention, through the matching of the reverse forming male die, the reverse forming lower die and the shape correcting upper die and the shape correcting lower die, the reverse local forming quality of the box-shaped part is improved, the production efficiency is improved, and the production cost and the workload are reduced.

Description

Reverse local forming device and method for box-shaped part
Technical Field
The invention belongs to the technical field of process forming, and particularly relates to a reverse local forming device and method for a box-shaped part.
Background
The general box-shaped parts are mostly in the shapes of circles, ellipses, squares and the like, the bottoms of the shell parts are generally in regular shapes of planes, step surfaces, inclined surfaces and the like, and the parts can be processed and molded according to a typical box-shaped part extension method. If the box-shaped part is rectangular in shape and the plane at the bottom of the shell is partially recessed, the part with the bottom concave structure usually needs to be subjected to reverse local molding of a concave part after the shape is stretched and molded, when one concave side edge is superposed with the side edge of the box-shaped part, the material flowing direction is not consistent with the stretching and molding mechanism, and the shell is broken due to the difficulty in material flowing during reverse stretching and molding, or the molding part is wrinkled, so that the molding qualification rate of the box-shaped part with the concave part is low.
Disclosure of Invention
The invention provides a reverse local forming device and method for a box-shaped part, and aims to improve the reverse local forming quality of the box-shaped part with a concave bottom, improve the qualification rate and reduce the production cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
the reverse local forming device for the box-shaped part at least comprises a press, a reverse forming device for forming and a shape correcting device for correcting; the reverse forming device and the shape correcting device are respectively connected to the press; the reverse forming device comprises a reverse forming male die and a reverse forming lower die matched with the reverse forming male die; the shape correcting device comprises a shape correcting upper die and a shape correcting lower die matched with the shape correcting upper die, and the reverse forming lower die and the shape correcting lower die are identical in structure.
The reverse forming lower die comprises a lower die plate, a material returning rod, a material returning plate and a female die; the lower template is a square plate; the female die is connected to the center of the upper surface of the lower template; the stripper plate is a square plate, the middle part of the stripper plate is square and hollow, the stripper plate is sleeved outside the female die, and the inner side wall of the stripper plate is in contact with the outer side wall of the female die; the material returning rod vertically penetrates through the lower template and is positioned right below the material returning plate.
The female die is a cuboid, and a groove is formed in the middle of one side of the female die.
The reverse forming male die is a square plate, and a bulge matched with the reverse forming lower die is arranged on the lower surface of the square plate.
The shape correcting upper die comprises a shape correcting male die, a knockout plate, an upper die plate and a knockout rod; the upper template is a square plate; the knockout pin is symmetrically connected with the upper surface of the upper template; the stamping plate is fixedly connected to the center of the lower surface of the upper die plate, the upper end of the shape correcting male die is connected with the lower surface of the upper die plate, and the shape correcting male die is connected with the side wall of the stamping plate.
The ramming plate is of a rectangular plate-shaped structure; and the lower surface of one side of the ramming plate is provided with a bulge matched with the shape correction lower die.
A forming method of a reverse local forming device for box-shaped parts comprises the following steps,
the method comprises the following steps: respectively connecting a reverse forming male die of a reverse forming device for forming and a matched reverse forming lower die to a press machine, and adjusting the gap between the groove part of a female die in the reverse forming lower die and the convex part of the forming male die;
step two: processing a part A at one end of the box-shaped part needing reverse forming into a process groove;
step three: mounting the box-shaped part with the process groove processed in the step two on a female die of the reverse forming lower die, and aligning a part A on the box-shaped part with the process groove with a groove on the female die;
step four: coating mixed lubricating grease on the periphery of the part A of the box-shaped part with the process groove;
step five: performing reverse local stretching forming by using a reverse forming convex die until the design height is reached;
step six: after the fifth step, pushing up a material returning rod of the reverse forming lower die, and jacking up a material returning plate of the reverse forming lower die by the material returning rod until the box-shaped part after the reverse forming is ejected;
step seven: connecting a shape correcting upper die of the shape correcting device for comparison and a shape correcting lower die matched with the shape correcting upper die to a press machine, and adjusting a gap between the side surface of a female die in the shape correcting lower die and the inner side surface of a shape correcting male die to ensure that the gap is uniform;
step eight: mounting the box-shaped part which is manufactured in the sixth step and is subjected to reverse forming on a lower shaping die of a shaping device, and aligning the part A of the box-shaped part subjected to reverse forming with a groove on a female die of the lower shaping die;
step nine: the shape correction upper die is used for correcting the reversely formed box-shaped part;
step ten: and after the ninth step is finished, pushing up a material returning rod of the lower sizing die, and jacking up a material returning plate of the lower sizing die by the material returning rod until the box-shaped part after the reverse forming is ejected.
In the first step, the gap between the groove part of the female die and the convex part of the forming male die is adjusted to be 1.3-1.5 times of the thickness of the box-shaped part with the process groove.
Has the advantages that:
according to the invention, through the matching of the reverse forming convex die, the matched reverse forming lower die, the shape correcting upper die and the matched shape correcting lower die, the reverse local forming quality of the box-shaped part is improved, the production efficiency is improved, and the production cost and the workload are reduced.
The foregoing is a summary of the present invention, and the following is a detailed description of the preferred embodiments of the present invention in order to provide a more clear understanding of the technical features of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the reverse molding apparatus of the present invention;
FIG. 2 is a schematic view of the configuration of the sizing device of the present invention;
FIG. 3 is a schematic view of a box with a process channel according to the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of a box-shaped part of the present invention after reverse forming;
FIG. 6 is a schematic view of a box shaped part of the present invention after sizing;
fig. 7 is a sectional view taken along line B-B of fig. 6.
In the figure: 1-a lower template; 2-a material returning rod; 3-material returning plate; 4-a female die; 5-box shaped parts with process slots; 6-reverse forming male die; 7-shape correcting male die; 8-a knockout plate; 9-upper template; 10-a knockout pin; 11-box-shaped part after reverse forming.
The foregoing is a summary of the present invention, and the following is a detailed description of the preferred embodiments of the present invention in order to provide a more clear understanding of the technical features of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
1-7, the reverse local forming device at least comprises a press, a reverse forming device for forming and a correcting device for correcting; the reverse forming device and the shape correcting device are respectively connected to the press; the reverse forming device comprises a reverse forming male die 6 and a reverse forming lower die matched with the reverse forming male die; the shape correcting device comprises a shape correcting upper die and a shape correcting lower die matched with the shape correcting upper die, and the reverse forming lower die and the shape correcting lower die are identical in structure.
When the method is applied specifically, firstly, a reverse forming male die 6 of a reverse forming device for forming and a reverse forming lower die matched with the reverse forming male die are respectively connected to a press machine, and a gap between a groove part of a female die 4 in the reverse forming lower die and a convex part of the forming male die 6 is adjusted; then, processing a part A at one end of the box-shaped part needing reverse forming into a process groove; then, mounting the processed box-shaped part 5 with the process groove on a reverse forming lower die, and aligning the part A on the box-shaped part 5 with the process groove with the reverse forming lower die; coating mixed lubricating grease on the periphery of the part A of the box-shaped part 5 with the process groove; then, a reverse forming convex die 6 is used for reverse local stretching forming until reaching the design height; after the steps are completed, ejecting the box-shaped part 11 which is formed in the reverse direction; connecting a shape correcting upper die of the shape correcting device for comparison and a shape correcting lower die matched with the shape correcting upper die to a press machine, and adjusting a gap between the side surface of a female die 4 in the shape correcting lower die and the inner side surface of a shape correcting male die 7 to ensure that the gap is uniform; mounting the box-shaped part 11 which is manufactured in the front and is subjected to reverse forming on a lower shaping die of a shaping device, and aligning the part A of the box-shaped part 11 which is subjected to reverse forming with the lower shaping die; the shape correction upper die is used for correcting the reversely formed box-shaped part 11; and ejecting the box-shaped part 11 after the reverse forming.
According to the invention, through the matching of the reverse forming convex die, the matched reverse forming lower die, the shape correcting upper die and the matched shape correcting lower die, the reverse local forming quality of the box-shaped part is improved, the production efficiency is improved, and the production cost and the workload are reduced.
Example two:
referring to fig. 1 and 2, in a reverse local forming device for a box-shaped part, on the basis of the first embodiment, the reverse forming lower die comprises a lower die plate 1, a material returning rod 2, a material returning plate 3 and a female die 4; the lower template 1 is a square plate; the female die 4 is connected to the center of the upper surface of the lower template 1; the stripper plate 3 is a square plate, the middle part of the stripper plate is square hollow, the stripper plate 3 is sleeved outside the female die 4, and the inner side wall of the stripper plate 3 is in contact with the outer side wall of the female die 4; the material returning rod 2 vertically penetrates through the lower template 1 and is positioned right below the material returning plate 3.
Furthermore, the female die 4 is a cuboid, and a groove is formed in the middle of one side of the female die.
In practical use, the reverse forming male die 6 of the reverse forming device for forming and the matched reverse forming lower die are respectively connected to a press machine, and the gap between the groove part of the female die 4 in the reverse forming lower die and the convex part of the forming male die 6 is adjusted. Then, mounting the processed box-shaped part 5 with the process groove on a female die 4 of the reverse forming lower die, and aligning the part A on the box-shaped part 5 with the process groove with a groove on the female die 4; carrying out forming operation on the box-shaped part 5 with the process groove; and then, pushing up the material returning rod 2 of the reverse forming lower die, and jacking the material returning plate 3 of the reverse forming lower die by the material returning rod 2 until the box-shaped part 11 after the reverse forming is ejected, so that the box-shaped part 11 after the reverse forming is conveniently taken out for subsequent operation.
Example three:
referring to the reverse local forming device of the box-shaped part shown in fig. 1, on the basis of the first embodiment, the reverse forming male die 6 is a square plate, and a protrusion matched with the reverse forming lower die is arranged on the lower surface of the square plate.
In practical use, the reverse forming convex die 6 adopts the technical scheme, so that the box-shaped part 5 with the process groove can be conveniently and locally formed in a reverse direction.
Example four:
referring to the reverse local forming device of the box-shaped part shown in fig. 2, on the basis of the first embodiment, the shaping upper die comprises a shaping male die 7, a knockout plate 8, an upper die plate 9 and a knockout rod 10; the upper template 9 is a square plate; the knockout pin 10 is symmetrically connected with the upper surface of the upper template 9; the stamping plate 8 is fixedly connected to the center of the lower surface of the upper die plate 9, the upper end of the shape correcting male die 7 is connected with the lower surface of the upper die plate 9, and the shape correcting male die 7 is connected with the side wall of the stamping plate 8.
In actual use, when the box-shaped part 5 with the technical groove is reversely formed: connecting a shape correcting upper die of the shape correcting device for comparison and a shape correcting lower die matched with the shape correcting upper die to a press machine, and adjusting a gap between the side surface of a female die 4 in the shape correcting lower die and the inner side surface of a shape correcting male die 7 to ensure that the gap is uniform; mounting the prepared reversely formed box-shaped part 11 on a shaping lower die of a shaping device, and aligning the part A of the reversely formed box-shaped part 11 with a groove on a female die 4 of the shaping lower die; then, correcting the reversely formed box-shaped part 11 by using a correction upper die; after the shape correction is finished, the material returning rod 2 of the lower shape correction die is pushed upwards, the material returning rod 2 jacks up the material returning plate 3 of the lower shape correction die until the box-shaped part 11 which is formed in the reverse direction is ejected, and the box-shaped part 11 which is subjected to the shape correction is taken out conveniently.
Example five:
referring to a box-shaped part reverse partial forming device shown in fig. 2, on the basis of the first embodiment: the material beating plate 8 is of a rectangular plate-shaped structure; and a bulge matched with the lower shaping die is arranged on the lower surface of one side of the knockout plate 8.
In practical use, the material beating plate 8 adopts the technical scheme, and the shape of the box-shaped part 11 after reverse forming can be conveniently corrected with high precision.
Example six:
referring to fig. 1-7, a method for forming a reverse partial forming device of a box-shaped part comprises the following steps,
the method comprises the following steps: respectively connecting a reverse forming male die 6 of a reverse forming device for forming and a reverse forming lower die matched with the reverse forming male die on a press machine, and adjusting a gap between a groove part of a female die 4 in the reverse forming lower die and a convex part of the forming male die 6;
step two: processing a part A at one end of the box-shaped part needing reverse forming into a process groove;
step three: mounting the box-shaped part 5 with the process groove processed in the second step on a female die 4 of the reverse forming lower die, and aligning the part A on the box-shaped part 5 with the process groove with a groove on the female die 4;
step four: coating mixed lubricating grease on the periphery of the part A of the box-shaped part 5 with the process groove;
step five: performing reverse local stretching forming by using a reverse forming convex die 6 until the design height is reached;
step six: after the fifth step, pushing up the material returning rod 2 of the reverse forming lower die, and jacking up the material returning plate 3 of the reverse forming lower die by the material returning rod 2 until the box-shaped part 11 after the reverse forming is ejected;
step seven: connecting a shape correcting upper die of the shape correcting device for comparison and a shape correcting lower die matched with the shape correcting upper die to a press machine, and adjusting a gap between the side surface of a female die 4 in the shape correcting lower die and the inner side surface of a shape correcting male die 7 to ensure that the gap is uniform;
step eight: mounting the reversely formed box-shaped part 11 manufactured in the sixth step on a shaping lower die of a shaping device, and aligning the part A of the reversely formed box-shaped part 11 with a groove on a female die 4 of the shaping lower die;
step nine: the shape correction upper die is used for correcting the reversely formed box-shaped part 11;
step ten: and after the ninth step is finished, pushing up the material returning rod 2 of the lower die for shape correction, and jacking the material returning plate 3 of the lower die for shape correction by the material returning rod 2 until the box-shaped part 11 after reverse forming is ejected.
Further, in the first step, the gap between the groove part of the female die 4 and the convex part of the forming male die 6 is adjusted to be 1.3-1.5 times of the thickness of the box-shaped part 5 with the process groove.
In practical use, the reverse forming male die is organically matched with the matched reverse forming lower die, the shape correcting upper die and the matched shape correcting lower die, so that the reverse local forming quality of the box-shaped part is improved, the production efficiency is improved, and the production cost and the workload are reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims (8)

1. The utility model provides a reverse local forming device of box-shaped part, includes the press at least, its characterized in that: the device also comprises a reverse forming device for forming and a shape correcting device for correcting the shape; the reverse forming device and the shape correcting device are respectively connected to the press; the reverse forming device comprises a reverse forming male die (6) and a reverse forming lower die matched with the reverse forming male die; the shape correcting device comprises a shape correcting upper die and a shape correcting lower die matched with the shape correcting upper die, and the reverse forming lower die and the shape correcting lower die are identical in structure.
2. The apparatus for reverse partial molding of a box-shaped part according to claim 1, wherein: the reverse forming lower die comprises a lower die plate (1), a material returning rod (2), a material returning plate (3) and a female die (4); the lower template (1) is a square plate; the female die (4) is connected to the center of the upper surface of the lower template (1); the stripper plate (3) is a square plate, the middle part of the stripper plate is square and hollow, the stripper plate (3) is sleeved outside the female die (4), and the inner side wall of the stripper plate (3) is in contact with the outer side wall of the female die (4); the material returning rod (2) vertically penetrates through the lower template (1) and is positioned right below the material returning plate (3).
3. The apparatus for reverse partial molding of a box-shaped part according to claim 2, wherein: the female die (4) is a cuboid, and a groove is formed in the middle of one side of the female die.
4. The apparatus for reverse partial molding of a box-shaped part according to claim 1, wherein: the reverse forming male die (6) is a square plate, and a bulge matched with the reverse forming lower die is arranged on the lower surface of the square plate.
5. The apparatus for reverse partial molding of a box-shaped part according to claim 1, wherein: the shape correcting upper die comprises a shape correcting male die (7), a knockout plate (8), an upper die plate (9) and a knockout rod (10); the upper template (9) is a square plate; the knockout rod (10) is symmetrically connected to the upper surface of the upper template (9); the stamping plate (8) is fixedly connected to the center of the lower surface of the upper template (9), the upper end of the shape correcting male die (7) is connected with the lower surface of the upper template (9), and the shape correcting male die (7) is connected with the side wall of the stamping plate (8).
6. The apparatus for reverse partial molding of a box-shaped part according to claim 5, wherein: the ramming plate (8) is of a rectangular plate-shaped structure; and the lower surface of one side of the ramming plate (8) is provided with a bulge matched with the shape correction lower die.
7. The forming method of the reverse partial forming device of the box-shaped part according to any one of claims 1 to 6, comprising the steps of,
the method comprises the following steps: respectively connecting a reverse forming male die (6) of a reverse forming device for forming and a reverse forming lower die matched with the reverse forming male die to a press machine, and adjusting a gap between a groove part of a female die (4) in the reverse forming lower die and a convex part of the forming male die (6);
step two: processing a part A at one end of the box-shaped part needing reverse forming into a process groove;
step three: mounting the box-shaped part (5) with the process groove processed in the step two on a female die (4) of the reverse forming lower die, and aligning the part A on the box-shaped part (5) with the process groove with a groove on the female die (4);
step four: coating mixed lubricating grease on the periphery of the part A of the box-shaped part (5) with the process groove;
step five: performing reverse local stretching forming by using a reverse forming convex die (6) until reaching the design height;
step six: after the fifth step, pushing up the material returning rod (2) of the reverse forming lower die, and jacking up the material returning plate (3) of the reverse forming lower die by the material returning rod (2) until the box-shaped part (11) after reverse forming is ejected;
step seven: connecting a shape correcting upper die of the shape correcting device for comparison and a shape correcting lower die matched with the shape correcting upper die to a press machine, and adjusting a gap between the side surface of a female die (4) in the shape correcting lower die and the inner side surface of a shape correcting male die (7) to ensure that the gap is uniform;
step eight: mounting the box-shaped part (11) which is manufactured in the sixth step and is subjected to reverse forming on a shaping lower die of a shaping device, and aligning the part A of the box-shaped part (11) which is subjected to reverse forming with a groove on a female die (4) of the shaping lower die;
step nine: the shape correction upper die is used for correcting the reversely formed box-shaped part (11);
step ten: and after the ninth step is finished, pushing up a material returning rod (2) of the lower die for correction, and jacking up a material returning plate (3) of the lower die for correction by the material returning rod (2) until the box-shaped part (11) which is formed reversely is ejected.
8. The forming method of a reverse partial forming apparatus of a box-shaped part according to claim 7, wherein: in the first step, the gap between the groove part of the female die (4) and the convex part of the forming male die (6) is adjusted to be 1.3-1.5 times of the thickness of the box-shaped part (5) with the process groove.
CN202011516643.3A 2020-12-21 Reverse local forming device and method for box-shaped part Active CN112620497B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011516643.3A CN112620497B (en) 2020-12-21 Reverse local forming device and method for box-shaped part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011516643.3A CN112620497B (en) 2020-12-21 Reverse local forming device and method for box-shaped part

Publications (2)

Publication Number Publication Date
CN112620497A true CN112620497A (en) 2021-04-09
CN112620497B CN112620497B (en) 2024-11-12

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04228227A (en) * 1990-03-31 1992-08-18 Barmag Luk Automobiltechnik Gmbh & Co Kg Forming method for sheet casing by deep drawing process
CN205629097U (en) * 2016-04-29 2016-10-12 上海晨昌精密模具有限公司 Reverse tensile lid upgrades mould
CN107584014A (en) * 2017-09-07 2018-01-16 潍柴重机股份有限公司 A kind of forming method of Large Copacity oil sump
CN111085615A (en) * 2019-12-04 2020-05-01 北京动力机械研究所 Forming die and forming process for high-temperature alloy small-inner-diameter annular deep groove component
CN214683825U (en) * 2020-12-21 2021-11-12 中船重工西安东仪科工集团有限公司 Reverse local forming device of box-shaped part

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04228227A (en) * 1990-03-31 1992-08-18 Barmag Luk Automobiltechnik Gmbh & Co Kg Forming method for sheet casing by deep drawing process
CN205629097U (en) * 2016-04-29 2016-10-12 上海晨昌精密模具有限公司 Reverse tensile lid upgrades mould
CN107584014A (en) * 2017-09-07 2018-01-16 潍柴重机股份有限公司 A kind of forming method of Large Copacity oil sump
CN111085615A (en) * 2019-12-04 2020-05-01 北京动力机械研究所 Forming die and forming process for high-temperature alloy small-inner-diameter annular deep groove component
CN214683825U (en) * 2020-12-21 2021-11-12 中船重工西安东仪科工集团有限公司 Reverse local forming device of box-shaped part

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