CN112496169A - Riveting die and method for grounding nut - Google Patents
Riveting die and method for grounding nut Download PDFInfo
- Publication number
- CN112496169A CN112496169A CN202011554353.8A CN202011554353A CN112496169A CN 112496169 A CN112496169 A CN 112496169A CN 202011554353 A CN202011554353 A CN 202011554353A CN 112496169 A CN112496169 A CN 112496169A
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- Prior art keywords
- nut
- riveting
- hole
- workpiece
- die
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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
-
- 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
Abstract
The invention discloses a riveting die and a method for a grounding nut, which can enable the grounding surface of the grounding nut to exceed the grounding nut of a workpiece, wherein the riveting die comprises: an upper die and a lower die; this ground nut includes: the riveting device comprises a cylinder and a step for pressure riveting arranged on the cylinder, wherein a U-shaped groove is formed in the position, close to the step for pressure riveting, of the cylinder; the lower mould on set up with ground nut's outer face of cylinder matched with place the hole, be provided with the pressure in this place the hole and rivet the positioning insert, this pressure rivets the positioning insert's concrete structure and includes: and the insert body is tightly matched with the placing hole, a positioning column matched with the threaded hole of the grounding nut is arranged on the insert body, and an avoiding hole matched with the positioning column is formed in the upper die. The method for riveting the die is particularly suitable for processing and producing various security intelligent control cabinets, energy storage cabinets and battery box control boxes.
Description
Technical Field
The invention relates to a press riveting die and a press riveting method, in particular to a press riveting die and a press riveting method for a grounding nut.
Background
As is well known, many security intelligent control cabinets, energy storage cabinets, battery box control boxes and the like have higher and higher grounding requirements, and personal safety and the safety of control circuit boards arranged in the security intelligent control cabinets, energy storage cabinets, battery box control boxes and the like are directly affected. For this purpose, a ground nut is usually riveted to a bottom plate of the housing, and the control circuit board forms a ground connection structure with the housing through the ground nut. At present, the grounding nut formed by pressing through a traditional pressing riveting method based on a pressing riveting pad column cannot exceed the corresponding side surface of the bottom surface of the shell body in the grounding surface contacted with the control circuit board, so that the contact between the control circuit board and the grounding nut is unreliable, and a good protection effect cannot be achieved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a press riveting die of a ground nut, which can make the ground surface of the ground nut exceed the ground surface of a workpiece.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a clinch die for a ground nut, comprising: an upper die and a lower die; the concrete structure of ground nut includes: the riveting device comprises a cylinder and a step for pressure riveting arranged on the cylinder, wherein a U-shaped groove is formed in the position, close to the step for pressure riveting, of the cylinder; the lower mould on set up with ground nut's outer face of cylinder matched with place the hole, be provided with the pressure in this place the hole and rivet the positioning insert, this pressure rivets the positioning insert's concrete structure and includes: and the insert body is tightly matched with the placing hole, a positioning column matched with the threaded hole of the grounding nut is arranged on the insert body, and an avoiding hole matched with the positioning column is formed in the upper die.
As a preferable scheme, in the riveting die for the grounding nut, the placing hole is a blind hole, and the bottom surface of the insert body is placed on the bottom wall of the placing hole.
Preferably, in the riveting die for the grounding nut, a through hole for maintenance is formed in the bottom wall of the placing hole.
Preferably, in the riveting die for the grounding nut, an end of the positioning column is provided with a chamfer.
The invention also provides a press riveting method of the grounding nut, which can enable the grounding surface of the grounding nut to exceed the workpiece, the press riveting method is based on the press riveting die provided by the invention, and the steps are as follows:
1) selecting a grounding nut with a proper height according to the thickness of the workpiece;
2) punching a pre-pressing hole on the position of the workpiece needing to be pressed into the grounding nut;
3) placing the punched workpiece between the upper die and the lower die, inserting a cylinder of the grounding nut into the prepressing hole from top to bottom during placement, and then penetrating the grounding nut on the positioning column so that the workpiece is horizontally placed on the lower die;
4) the upper die moves downwards, the step for press riveting at the top of the grounding nut is pressed into the workpiece, the workpiece generates plastic deformation in the pressing process, the material of the workpiece is extruded into the U-shaped groove of the grounding nut, and finally, the upper end surface of the step for press riveting of the grounding nut is flush with the upper surface of the workpiece;
5) and the upper die moves upwards, the workpiece which is pressed and riveted with the grounding nut is taken down from the lower die, and the pressing and riveting is completed.
Preferably, in the method for caulking the ground nut, the ground nut caulked to the workpiece has a bottom surface extending at least 0.2 mm beyond a back surface of the workpiece.
Preferably, in the method of caulking the ground nut, a cross section of the caulking step of the ground nut is a regular hexagon.
Preferably, in the method for riveting the ground nut, the U-shaped groove is an annular groove.
The invention has the beneficial effects that: the riveting die is simple and practical, the lower die is provided with the placing hole, the riveting positioning insert is arranged in the placing hole, and the upper die is provided with the avoiding hole, so that the mounting surface of the grounding nut can exceed the workpiece only by ensuring that the height of the grounding nut is larger than the thickness of the workpiece, and the control circuit board can be ensured to be in reliable contact with the grounding nut by adopting the riveting method, so that the control circuit board is well protected.
Drawings
Fig. 1 is a schematic structural diagram of a control system of a riveting die according to the invention.
Fig. 2 is a schematic structural view of the positional relationship between the workpiece and the ground nut before clinching.
Fig. 3 is a schematic structural diagram of the positional relationship between the workpiece and the ground nut after the clinching.
Fig. 4 is an enlarged schematic view of the press-riveting positioning insert shown in fig. 1.
Fig. 5 is a schematic structural view of the ground nut.
FIG. 6 is a schematic cross-sectional view of a ground nut
Fig. 7 is an enlarged schematic structural view of a portion a in fig. 2.
Fig. 8 is an enlarged structural view of a portion B in fig. 3.
The reference numerals in fig. 1 to 8 are: 1. the device comprises an upper die, 11, a relief hole, 2, a lower die, 21, a placing hole, 211, a maintenance through hole, 4, a press riveting positioning insert, 40, an insert body, 41, a positioning column, 411, a chamfer, 5, a grounding nut, 50, a cylinder, 501, an outer cylindrical surface, 51, a press riveting step, 52, a U-shaped annular groove, 53, a threaded hole, 8 and a workpiece.
Detailed Description
The following describes in detail specific embodiments of a clinching mold and a clinching method for a ground nut according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the riveting die for the ground nut of the present invention includes: an upper die 1 and a lower die 2; as shown in fig. 5 and 6, the specific structure of the ground nut 5 includes: the riveting device comprises a cylinder 50 and a step 51 for riveting arranged on the cylinder 50, wherein a U-shaped annular groove 52 is arranged on the cylinder 50 close to the step 51 for riveting; the lower die 2 is provided with a placing hole 21 matched with the outer cylindrical surface 501 of the cylinder 50 of the grounding nut 5, and the bottom wall of the placing hole 21 is downwards provided with a maintenance through hole 211, so that a stepped hole with a large upper part and a small lower part is formed in the lower die 2; a press riveting positioning insert 4 is arranged in the placing hole 21, as shown in fig. 4, the specific structure of the press riveting positioning insert 4 includes: the insert body 40 is tightly matched with the placing hole 21, the bottom surface of the insert body 40 is placed on the bottom wall of the placing hole 21, a positioning column 41 matched with a threaded hole 53 of the grounding nut 5 is arranged on the insert body 40, and a chamfer 411 is arranged at the end part of the positioning column 41; an avoiding hole 11 matched with the positioning column 42 is formed in the upper die 1.
The invention relates to a press riveting method of a grounding nut, which comprises the following steps:
1) selecting a proper grounding nut 5 according to the thickness of the workpiece 8, generally selecting the grounding nut 5 with the cross section of the step 51 for riveting being a regular hexagon, wherein the height of the grounding nut 5 is at least 0.2 mm greater than the thickness of the workpiece 8;
2) punching a pre-pressing hole on the position of the workpiece 8, which needs to be pressed into the grounding nut 5;
3) placing the punched workpiece 8 between the upper and lower dies 1 and 2, wherein during placement, the cylinder 50 of the grounding nut 5 is inserted into the prepressing hole from top to bottom, and then the grounding nut 5 is arranged on the positioning column 41 in a penetrating manner, so that the workpiece 8 is horizontally placed on the lower die 2-see fig. 2;
4) the upper die 1 descends, the step 51 for press riveting at the top of the grounding nut 5 is pressed into the workpiece 8, in the pressing process, the workpiece 8 generates plastic deformation, the material of the workpiece 8 is extruded into the U-shaped annular groove 52 of the grounding nut 5, and finally, the upper end surface of the step 51 for press riveting of the grounding nut 5 is flush with the upper surface of the workpiece 8;
5) the upper die 1 moves upward, and the workpiece 8 with the ground nut 5 is removed from the lower die 2-see fig. 3, and the clinching is completed.
In summary, the present invention is only a preferred embodiment, and not intended to limit the scope of the invention, and all equivalent changes and modifications made in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (9)
1. A clinch die for a ground nut, comprising: an upper die and a lower die; the method is characterized in that: the specific structure of ground nut includes: the riveting device comprises a cylinder and a step for pressure riveting arranged on the cylinder, wherein a U-shaped groove is formed in the position, close to the step for pressure riveting, of the cylinder; the lower mould on set up with ground nut's outer face of cylinder matched with place the hole, be provided with the pressure in this place the hole and rivet the positioning insert, this pressure rivets the positioning insert's concrete structure and includes: and the insert body is tightly matched with the placing hole, a positioning column matched with the threaded hole of the grounding nut is arranged on the insert body, and an avoiding hole matched with the positioning column is formed in the upper die.
2. The clinch die of the ground nut of claim 1, wherein: the placing hole is a blind hole, and the bottom surface of the insert body is placed on the bottom wall of the placing hole.
3. The mold for caulking the ground nut according to claim 2, wherein: the bottom wall of the placing hole is provided with a through hole for maintenance.
4. The clinch die of the ground nut of claim 1, wherein: and the end part of the positioning column is provided with a chamfer.
5. A method for riveting ground nut, based on the riveting die of any claim 1 to 4, comprising the following steps:
1) selecting a grounding nut with a proper height according to the thickness of the workpiece;
2) punching a pre-pressing hole on the position of the workpiece needing to be pressed into the grounding nut;
3) placing the punched workpiece between the upper die and the lower die, inserting a cylinder of the grounding nut into the prepressing hole from top to bottom during placement, and then penetrating the grounding nut on the positioning column so that the workpiece is horizontally placed on the lower die;
4) the upper die moves downwards, the step for press riveting at the top of the grounding nut is pressed into the workpiece, the workpiece generates plastic deformation in the pressing process, the material of the workpiece is extruded into the U-shaped groove of the grounding nut, and finally, the upper end surface of the step for press riveting of the grounding nut is flush with the upper surface of the workpiece;
5) and the upper die moves upwards, the workpiece which is pressed and riveted with the grounding nut is taken down from the lower die, and the pressing and riveting is completed.
6. The method of claim 5, wherein the riveting comprises: the bottom surface of the grounding nut pressed and riveted on the workpiece exceeds the back surface of the workpiece by at least 0.2 mm.
7. The clinching method of a ground nut as claimed in claim 5 or 6, wherein: the cross section of the step for riveting the grounding nut is in a regular hexagon shape.
8. The clinching method of a ground nut as claimed in claim 5 or 6, wherein: the U-shaped groove is an annular groove.
9. The method of claim 7, wherein the step of riveting the ground nut comprises the steps of: the U-shaped groove is an annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011554353.8A CN112496169A (en) | 2020-12-24 | 2020-12-24 | Riveting die and method for grounding nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011554353.8A CN112496169A (en) | 2020-12-24 | 2020-12-24 | Riveting die and method for grounding nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112496169A true CN112496169A (en) | 2021-03-16 |
Family
ID=74921973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011554353.8A Pending CN112496169A (en) | 2020-12-24 | 2020-12-24 | Riveting die and method for grounding nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112496169A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402124A (en) * | 1982-01-25 | 1983-09-06 | Guenther Krueger | Method of pressure locking an aperatured nut into a die-side hole of a metal plate |
| JPH02159787A (en) * | 1988-12-14 | 1990-06-19 | Mitsubishi Electric Corp | Large current board device |
| JPH07217171A (en) * | 1994-01-28 | 1995-08-15 | Itoki Co Ltd | Leg unit for free access flooring panel |
| CN202555706U (en) * | 2012-05-29 | 2012-11-28 | 伟创力(上海)金属件有限公司 | Prepressing lateral stress riveting fixture |
| CN205646201U (en) * | 2016-04-25 | 2016-10-12 | 广东美的暖通设备有限公司 | A air conditioner that is used for automatically controlled box subassembly of air conditioner and has it |
| CN208067143U (en) * | 2018-02-05 | 2018-11-09 | 北京顺恒达汽车电子股份有限公司 | A kind of nut riveting limiting tool structure |
| CN208467054U (en) * | 2018-07-09 | 2019-02-05 | 今创集团股份有限公司 | The riveting tool of self-clinching nut |
| CN211331170U (en) * | 2019-08-08 | 2020-08-25 | 山东固而美金属制品有限公司 | Sheet metal part pressure riveting device |
-
2020
- 2020-12-24 CN CN202011554353.8A patent/CN112496169A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402124A (en) * | 1982-01-25 | 1983-09-06 | Guenther Krueger | Method of pressure locking an aperatured nut into a die-side hole of a metal plate |
| JPH02159787A (en) * | 1988-12-14 | 1990-06-19 | Mitsubishi Electric Corp | Large current board device |
| JPH07217171A (en) * | 1994-01-28 | 1995-08-15 | Itoki Co Ltd | Leg unit for free access flooring panel |
| CN202555706U (en) * | 2012-05-29 | 2012-11-28 | 伟创力(上海)金属件有限公司 | Prepressing lateral stress riveting fixture |
| CN205646201U (en) * | 2016-04-25 | 2016-10-12 | 广东美的暖通设备有限公司 | A air conditioner that is used for automatically controlled box subassembly of air conditioner and has it |
| CN208067143U (en) * | 2018-02-05 | 2018-11-09 | 北京顺恒达汽车电子股份有限公司 | A kind of nut riveting limiting tool structure |
| CN208467054U (en) * | 2018-07-09 | 2019-02-05 | 今创集团股份有限公司 | The riveting tool of self-clinching nut |
| CN211331170U (en) * | 2019-08-08 | 2020-08-25 | 山东固而美金属制品有限公司 | Sheet metal part pressure riveting device |
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