CN114570836A - Metal plate rivet-free connection forming die and method - Google Patents

Metal plate rivet-free connection forming die and method Download PDF

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Publication number
CN114570836A
CN114570836A CN202210274719.9A CN202210274719A CN114570836A CN 114570836 A CN114570836 A CN 114570836A CN 202210274719 A CN202210274719 A CN 202210274719A CN 114570836 A CN114570836 A CN 114570836A
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China
Prior art keywords
metal plate
male die
die
blank holder
cushion block
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CN202210274719.9A
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Chinese (zh)
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CN114570836B (en
Inventor
董文正
李书伦
査祥越
林启权
李雅娴
赫文博
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Xiangtan University
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Xiangtan University
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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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/026—Reinforcing the connection by locally deforming
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention discloses a metal plate rivet-free connection forming die which comprises an upper male die, a blank holder, a female die, a lower male die and a cushion block, and the invention also provides a metal plate rivet-free connection forming method which comprises the following steps: 1, placing two metal plates on a female die from top to bottom, enabling a blank holder to move downwards to tightly press the upper metal plate and the lower metal plate, enabling the upper male die to move downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and enabling the upper metal plate to be embedded into the lower metal plate; 2, the upper male die and the blank holder are static, and the lower male die moves upwards to extrude the metal plate until the upper surface of the lower male die is level with the upper surface of the cushion block, so that the upper metal plate and the lower metal plate are fully embedded with each other; and 3, resetting the upper male die, the blank holder and the lower male die, taking out the connected metal plate, and completing one complete process. The invention effectively reduces the protruding height of the rivet-free connecting joint of the metal plate, increases the interlocking value of the joint and improves the overall strength of the joint.

Description

Metal plate riveting-free connection forming die and method
Technical Field
The invention relates to the field of metal plate connection, in particular to a rivet-free metal plate connection forming die and method.
Technical Field
With the increasing requirements on energy conservation, material conservation, environmental protection and the like in the world, in the field of metal plate connection, the traditional self-piercing riveting and resistance spot welding process is not in line with the development trend of the current society due to the problems of increased dead weight, easy corrosion at joints, complex operation and the like. The riveting-free connection process utilizes the plastic deformation of the plate to realize mechanical interlocking, and has the advantages of wide application range, low cost, simplicity in operation and the like, but the existing riveting-free connection process has the problems of insufficient joint strength, high joint protrusion and the like, the service life and the surface quality of a product are influenced, and the actual production requirements are gradually difficult to meet.
Therefore, how to change the current situation that the rivet-free connection joint in the prior art is insufficient in strength and high in joint bulge becomes a problem to be solved urgently by the technical personnel in the field
Disclosure of Invention
The invention aims to provide a metal plate rivet-free connection forming die, which is used for solving the problems in the prior art and improving the overall performance of a rivet-free connection joint.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a metal plate rivet-free connection forming die which mainly comprises an upper male die, a blank holder, a female die, a lower male die and a cushion block, wherein the upper male die is connected with an inner cylinder body above a press machine, the blank holder is connected with an outer cylinder body above the press machine, the blank holder is sleeved outside the upper male die, the upper male die and the lower male die are coaxially arranged and are in sliding connection, the female die, the lower male die and the cushion block are coaxially arranged, the female die and the cushion block are fixed on the press machine, and the lower male die is connected with a cylinder body below the press machine.
Preferably, the upper male die and the blank holder, the female die and the lower male die, and the lower male die and the cushion block are in clearance fit.
Preferably, the upper male die, the female die and the lower male die are made of die steel materials, and the blank holder and the cushion block are made of common structural steel materials.
The invention also provides a metal plate rivet-free connection forming method, which utilizes the metal plate rivet-free connection forming die and comprises the following steps:
the method comprises the following steps: placing two metal plates on the female die from top to bottom, enabling the blank holder to move downwards to tightly press the upper metal plate and the lower metal plate, enabling the upper male die to move downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and enabling the upper metal plate to be embedded into the lower metal plate;
step two: the upper male die and the blank holder are static, and the lower male die moves upwards to extrude the metal plate until the upper surface of the lower male die is level with the upper surface of the cushion block, so that the upper metal plate and the lower metal plate are fully embedded with each other;
step three: and resetting the upper male die, the blank holder and the lower male die, taking out the connected metal plate, and completing one complete process.
Preferably, the upper male die is reset firstly, then the blank holder is reset, and finally the lower male die is reset.
Compared with the prior art, the invention has the following technical effects: the invention provides a metal plate rivet-free connection forming die which mainly comprises an upper male die, a blank holder, a female die, a lower male die and a cushion block, wherein the upper male die is connected with an inner cylinder body above a press machine, the blank holder is connected with an outer cylinder body above the press machine, the blank holder is sleeved outside the upper male die, the upper male die and the lower male die are coaxially arranged and are in sliding connection, the female die, the lower male die and the cushion block are coaxially arranged, the female die and the cushion block are fixed on the press machine, and the lower male die is connected with a cylinder body below the press machine. The invention also provides a riveting-free connection forming method of the metal plates, which comprises the following steps: 1, placing two metal plates on a female die up and down, enabling a blank holder to move downwards to tightly press the upper metal plate and the lower metal plate, enabling the upper male die to move downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and embedding the upper metal plate into the lower metal plate; 2, the upper male die and the blank holder are static, and the lower male die moves upwards to extrude the metal plate until the upper surface of the lower male die is level with the upper surface of the cushion block, so that the upper metal plate and the lower metal plate are fully embedded with each other; and 3, resetting the upper male die, the blank holder and the lower male die, taking out the connected metal plate, and completing one complete process. The invention effectively reduces the protruding height of the rivet-free joint of the metal plate and obviously improves the strength of the rivet-free joint of the metal plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or 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 sectional view of a rivetless connection forming mold for metal sheets according to the present invention;
FIG. 2 is a schematic sectional view of the rivet-free connection forming die for sheet metal according to the present invention in another working state;
FIG. 3 is a schematic illustration of a sheet formed using a method of forming a sheet metal rivetless connection in accordance with the present invention;
FIG. 4 is a schematic view of a metal sheet after completion of the steps of the method for forming a rivet-free joint according to the present invention;
FIG. 5 is a schematic view of a sheet metal blank after forming by a method of the present invention;
wherein, 1 is an upper male die, 2 is a blank holder, 3 is a female die, 4 is a lower male die, 5 is a cushion block, t0Is the thickness of the upper plate, t1Is the thickness of the lower plate, H0For the height, X, of the rivetless connection joint of the metal plate after the step is finished0The interlocking value H of the rivet-free connecting joint of the metal plate after the step is finished1The height, X, of the rivet-free connecting joint of the metal plate after the third step1And e, obtaining the interlocking value of the rivet-free connecting joint of the metal plate after the third step.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a metal plate riveting-free connection forming die to solve the problems in the prior art.
Referring to fig. 1-5, fig. 1 is a schematic sectional view of a metal plate rivetless connecting forming mold according to the present invention; FIG. 2 is a schematic sectional view of the rivet-free connection forming die for sheet metal according to the present invention in another working state; FIG. 3 is a schematic illustration of a sheet formed using a method of forming a sheet metal rivetless connection in accordance with the present invention;
FIG. 4 is a schematic view of a metal sheet after completion of the steps of the method for forming a rivet-free joint according to the present invention; fig. 5 is a schematic view of a sheet metal formed by the method for forming a rivetless connection according to the present invention.
The invention also provides a riveting-free connection forming method for the metal plates, which comprises the following steps:
the method comprises the following steps: placing two metal plates on the female die from top to bottom, enabling the blank holder to move downwards to tightly press the upper metal plate and the lower metal plate, enabling the upper male die to move downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and enabling the upper metal plate to be embedded into the lower metal plate;
step two: the upper male die and the blank holder are static, and the lower male die moves upwards to extrude the metal plate until the upper surface of the lower male die is level with the upper surface of the cushion block, so that the upper metal plate and the lower metal plate are fully embedded with each other;
step three: and resetting the upper male die, the blank holder and the lower male die, taking out the connected metal plate, and completing one complete process.
In step one, the thicknesses are respectively t0、t1The upper and lower metal plates are arranged on the female die 3, the female die 3 is provided with a positioning pin to ensure that the upper and lower metal plates are accurately arranged, the upper male die 1 is connected with the inner cylinder body of the press machine, and the blank holder 2 is connected with the outer cylinder of the press machineThe upper male die 1 moves downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and the upper metal plate is embedded into the lower metal plate. Formed rivet-free joint protrusion height H0The interlock value is X0。
In the second step, the blank holder and the upper male die are kept static, the lower male die moves upwards to a top dead center under the driving of a cylinder body below the press machine, the upper surface of the lower male die is flush with the upper surface of the cushion block, and the formed rivet-free connecting joint has the protruding height H1The interlock value is X1. Wherein H1<H0，X1>XOAnd the height of the rivet-free joint of the metal plate is effectively reduced, the interlocking value of the joint is improved, and the quality of the rivet-free joint of the metal plate is improved.
In the third step, the inner cylinder body above the press machine drives the upper male die to reset firstly, then the outer cylinder body above the press machine drives the blank holder to reset, finally the lower cylinder body of the press machine drives the lower male die to reset, and after the metal plate is taken out, a complete process is completed.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (6)

1. The utility model provides a sheet metal does not have and rivets connection forming die which characterized in that: the upper male die is connected with an inner cylinder body above a press machine, the blank holder is connected with an outer cylinder body above the press machine, the blank holder is sleeved outside the upper male die and coaxially arranged and slidably connected with the outer cylinder body above the press machine, the female die, the lower male die and the cushion block are coaxially arranged, the female die and the cushion block are fixed on the press machine, and the lower male die is connected with the cylinder body below the press machine.
2. The sheet metal rivetless connecting forming die of claim 1, wherein: the upper male die and the blank holder, the female die and the lower male die, and the lower male die and the cushion block are in clearance fit.
3. The sheet metal rivetless connection forming die of claim 1, characterized in that: the upper male die, the female die and the lower male die are made of die steel materials, and the blank holder and the cushion block are made of common structural steel materials.
4. A method for forming a rivetless connection of metal sheets by using the metal sheet rivetless connection forming die of any one of claims 1-3, which is characterized by comprising the following steps:
the method comprises the following steps: placing two metal plates on the female die from top to bottom, enabling the blank holder to move downwards to tightly press the upper metal plate and the lower metal plate, enabling the upper male die to move downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and enabling the upper metal plate to be embedded into the lower metal plate;
step two: the upper male die and the blank holder are static, and the lower male die moves upwards to extrude the metal plate until the upper surface of the lower male die is level with the upper surface of the cushion block, so that the upper metal plate and the lower metal plate are fully embedded with each other;
step three: and resetting the upper male die, the blank holder and the lower male die, taking out the connected metal plate, and completing one complete process.
5. The method for forming a rivetless connection of sheet metal according to claim 4, wherein: and in the second step, when the stroke of the lower male die reaches the top dead center, the upper surface of the lower male die is level with the upper surface of the cushion block.
6. The method for forming a rivetless connection of sheet metal according to claim 4, wherein: in the third step, the upper male die is reset firstly, then the blank holder is reset, and finally the lower male die is reset.
CN202210274719.9A 2022-03-18 2022-03-18 Metal plate rivetless connection forming die and method Active CN114570836B (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115301847A (en) * 2022-08-23 2022-11-08 广联航空工业股份有限公司 Forming method of sheet metal cover type parts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107626835A (en) * 2017-10-19 2018-01-26 西安交通大学 A kind of solid die friction of lightweight sheet material is without riveting connection method
CN108273924A (en) * 2018-01-22 2018-07-13 西安石油大学 The two-sided flat no riveting joint forming technique of lightweight plank
CN110899498A (en) * 2019-11-20 2020-03-24 四川大学 Movable reverse rivetless riveting die
WO2020135926A1 (en) * 2018-12-24 2020-07-02 Robert Bosch Gmbh Multi-layer fine blanking process for manufacturing metal parts and fine blanking device for carrying out such process
CN114054611A (en) * 2021-11-16 2022-02-18 燕山大学 Method for enhancing rivet-free connection strength of steel-aluminum bimetallic sheet through oxidation treatment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107626835A (en) * 2017-10-19 2018-01-26 西安交通大学 A kind of solid die friction of lightweight sheet material is without riveting connection method
CN108273924A (en) * 2018-01-22 2018-07-13 西安石油大学 The two-sided flat no riveting joint forming technique of lightweight plank
WO2020135926A1 (en) * 2018-12-24 2020-07-02 Robert Bosch Gmbh Multi-layer fine blanking process for manufacturing metal parts and fine blanking device for carrying out such process
CN110899498A (en) * 2019-11-20 2020-03-24 四川大学 Movable reverse rivetless riveting die
CN114054611A (en) * 2021-11-16 2022-02-18 燕山大学 Method for enhancing rivet-free connection strength of steel-aluminum bimetallic sheet through oxidation treatment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
韩晓兰等: "轻质板材平底无铆连接成形模具的优化" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115301847A (en) * 2022-08-23 2022-11-08 广联航空工业股份有限公司 Forming method of sheet metal cover type parts

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