CN112676434A - Burr mould is cut to bolt no burr - Google Patents
Burr mould is cut to bolt no burr Download PDFInfo
- Publication number
- CN112676434A CN112676434A CN202110100130.2A CN202110100130A CN112676434A CN 112676434 A CN112676434 A CN 112676434A CN 202110100130 A CN202110100130 A CN 202110100130A CN 112676434 A CN112676434 A CN 112676434A
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- die
- trimming
- bolt
- trimming die
- burr
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a burr-free flash cutting die for a bolt, which comprises an upper trimming die and a lower trimming die; the upper trimming die consists of an upper trimming die shell and an upper trimming die, and the upper trimming die is detachably connected with the upper trimming die shell; the lower trimming die is of an integral structure, and the lower trimming cutting edge on the lower trimming die is matched with the upper trimming cutting edge on the upper trimming die to cut off the edge of the bolt head together; the invention changes the original flash cutting mode, provides a new process method for the products of the gasket class which can not be designed, does not need to additionally arrange a deburring process, can ensure the product quality and improve the production efficiency.
Description
Technical Field
The invention belongs to the field of trimming dies, and particularly relates to a burr-free trimming die for a bolt.
Background
As the automotive industry develops, customers place greater demands on fasteners. A flash cutting process is needed for part of flywheel bolt products, however, because the area of a bearing surface under a bolt head is too small, a process gasket cannot be arranged on the bearing surface, burrs are left in the flash cutting process, and the burrs need to be removed in the later stage.
Disclosure of Invention
The invention provides a bolt burr-free trimming die, which solves the problem that burrs are easily generated in the existing trimming mode.
In order to solve the technical problems, the technical scheme of the invention is as follows: a burr-free flash cutting die for a bolt comprises an upper trimming die and a lower trimming die; the method is characterized in that: the upper trimming die consists of an upper trimming die shell and an upper trimming die, and the upper trimming die is detachably connected with the upper trimming die shell; the lower trimming die is of an integral structure, and the lower trimming cutting edge on the lower trimming die is matched with the upper trimming cutting edge on the upper trimming die to cut off the edge of the bolt head together.
The technical scheme is further limited, a limit groove is formed in the side face of the trimming upper die, a bolt hole is formed in the position, corresponding to the limit groove, of the upper die body of the trimming upper die, and a locking bolt is arranged in the bolt hole.
The technical scheme is further limited, the trimming lower die is made of die steel, a lower trimming cutting edge on a bearing surface of the trimming lower die is convex, and the outer side surface of the lower trimming cutting edge is a conical inclined plane.
According to the technical scheme, the edge cutting lower die is further improved, an ejector pin cavity is formed in the edge cutting lower die, an ejector pin is limited in the ejector pin cavity, and the ejector pin is used for ejecting out a bolt in the lower edge cutting edge.
Has the advantages that: the invention changes the original flash cutting mode, provides a new process method for the products of the gasket class which can not be designed, does not need to additionally arrange a deburring procedure, can ensure the product quality and improve the production efficiency; the invention optimizes the structure of the upper trimming die and the lower trimming die, reduces the production cost and is convenient to assemble, disassemble and maintain.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of an upper trimming die in the present invention.
Fig. 3 is a schematic structural view of the lower trimming die of the present invention.
Fig. 4 is a partially enlarged view of the lower trimming die of the present invention.
Detailed Description
As shown in FIG. 1, the bolt burr-free trimming die comprises an upper trimming die 1 and a lower trimming die 2; the upper trimming die 1 consists of a trimming upper die shell 11 and a trimming upper die 12, and the trimming upper die is detachably connected with the trimming upper die shell; the lower trimming die is of an integral structure, and the lower trimming cutting edge on the lower trimming die is matched with the upper trimming cutting edge on the upper trimming die to cut off the edge of the bolt head together;
as shown in fig. 2, a limit groove 13 is arranged on the side surface of the upper trimming die 12, a bolt hole is arranged on the upper trimming die shell corresponding to the limit groove, and a locking bolt 14 is arranged in the bolt hole; the advantages of this structure are: 1) the limiting groove is matched with the locking bolt, so that the upper trimming die can be prevented from turning or sliding back and forth in the die shell; 2) the limiting groove can prevent the risk that the trimming upper die falls off after the locking bolt fails;
as shown in fig. 3 and 4, the lower trimming die 2 is made of die steel, and the lower trimming edge 21 on the bearing surface is convex; the outer side surface of the lower trimming cutting edge is a conical inclined plane; the advantages of this structure are: the integral structure and the inner side surface of the cutting edge with the inclination can effectively prevent scrap iron from splashing among all parts, thereby avoiding the problem of instability and failure of the die;
as shown in fig. 3, an ejector pin cavity is arranged in the trimming lower die 2, the ejector pin is limited in the ejector pin cavity, and the ejector pin 3 is used for ejecting out the bolt in the lower trimming cutting edge, so that the bolt after trimming can be taken out conveniently, and the working efficiency is improved.
Description of the working principle of the invention: positioning a pre-processing bolt on the lower trimming die; namely, the rod part of the bolt is inserted into the lower trimming edge, and the head part of the bolt is positioned on the lower trimming edge; the upper trimming die presses the head of the bolt downwards, the upper trimming die and the lower trimming die perform trimming together, the upper trimming die cuts into most of the depth, the lower trimming die cuts into a small part of the depth, then the ejector pin ejects the product, and the trimming part of the product after ejection is smooth, bright and free of burrs.
Those skilled in the art will appreciate that the details of the present invention are not described in detail herein.
Claims (4)
1. A burr-free flash cutting die for a bolt comprises an upper trimming die and a lower trimming die; the method is characterized in that: the upper trimming die consists of an upper trimming die shell and an upper trimming die, and the upper trimming die is detachably connected with the upper trimming die shell; the lower trimming die is of an integral structure, and the lower trimming cutting edge on the lower trimming die is matched with the upper trimming cutting edge on the upper trimming die to cut off the edge of the bolt head together.
2. The bolt burr-free cutting and flashing die of claim 1, wherein: the side face of the trimming upper die is provided with a limiting groove, a bolt hole is formed in the position, corresponding to the limiting groove, of the upper die body on the trimming upper die, and a locking bolt is arranged in the bolt hole.
3. The bolt burr-free cutting burr die according to claim 1 or 2, characterized in that: the lower trimming die is made of die steel, a lower trimming cutting edge on a bearing surface of the lower trimming die is convex, and the outer side surface of the lower trimming cutting edge is a conical inclined plane.
4. The bolt burr-free cutting and flashing die of claim 3, wherein: the side cut lower die is internally provided with a thimble cavity, the thimble is limited in the thimble cavity, and the thimble is used for ejecting out a bolt in the lower side cut edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100130.2A CN112676434A (en) | 2021-01-26 | 2021-01-26 | Burr mould is cut to bolt no burr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100130.2A CN112676434A (en) | 2021-01-26 | 2021-01-26 | Burr mould is cut to bolt no burr |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112676434A true CN112676434A (en) | 2021-04-20 |
Family
ID=75459180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110100130.2A Pending CN112676434A (en) | 2021-01-26 | 2021-01-26 | Burr mould is cut to bolt no burr |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112676434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231531A (en) * | 2021-06-03 | 2021-08-10 | 安庆牛力模具股份有限公司 | Impact-resistant deburring type bolt trimming die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316998A (en) * | 2013-07-01 | 2013-09-25 | 苏州工业园区新凯精密五金有限公司 | Exceeding-type shearing die structure |
| CN207952338U (en) * | 2018-02-07 | 2018-10-12 | 卓越紧固系统（上海）有限公司 | A kind of molding die of trimming bolt |
| CN109967597A (en) * | 2019-03-11 | 2019-07-05 | 深圳航空标准件有限公司 | The process and its bolt for preventing bolt cold-heading trimming cut burr |
| CN210358789U (en) * | 2019-07-16 | 2020-04-21 | 苏州新凌高强度紧固件有限公司 | Get rid of mould structure of cold-heading side cut burr |
| CN210435141U (en) * | 2019-07-08 | 2020-05-01 | 日泰（上海）汽车标准件有限公司 | Edge cutting die structure capable of changing positions of burrs of bolts |
-
2021
- 2021-01-26 CN CN202110100130.2A patent/CN112676434A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316998A (en) * | 2013-07-01 | 2013-09-25 | 苏州工业园区新凯精密五金有限公司 | Exceeding-type shearing die structure |
| CN207952338U (en) * | 2018-02-07 | 2018-10-12 | 卓越紧固系统（上海）有限公司 | A kind of molding die of trimming bolt |
| CN109967597A (en) * | 2019-03-11 | 2019-07-05 | 深圳航空标准件有限公司 | The process and its bolt for preventing bolt cold-heading trimming cut burr |
| CN210435141U (en) * | 2019-07-08 | 2020-05-01 | 日泰（上海）汽车标准件有限公司 | Edge cutting die structure capable of changing positions of burrs of bolts |
| CN210358789U (en) * | 2019-07-16 | 2020-04-21 | 苏州新凌高强度紧固件有限公司 | Get rid of mould structure of cold-heading side cut burr |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231531A (en) * | 2021-06-03 | 2021-08-10 | 安庆牛力模具股份有限公司 | Impact-resistant deburring type bolt trimming die |
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