CN112916781A - Die and process for restraining stainless steel plate from cold heading and extrusion deformation - Google Patents
Die and process for restraining stainless steel plate from cold heading and extrusion deformation Download PDFInfo
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- CN112916781A CN112916781A CN202110095044.7A CN202110095044A CN112916781A CN 112916781 A CN112916781 A CN 112916781A CN 202110095044 A CN202110095044 A CN 202110095044A CN 112916781 A CN112916781 A CN 112916781A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 26
- 239000010935 stainless steel Substances 0.000 title claims abstract description 26
- 230000000452 restraining effect Effects 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims description 20
- 238000004080 punching Methods 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010030 laminating Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
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Abstract
The invention belongs to the technical field of cold heading processing, and particularly relates to a die and a process for resisting cold heading extrusion deformation of a stainless steel plate. The invention provides a die and a process for resisting cold heading extrusion deformation of a stainless steel plate, aiming at the problem that the edge of the plate is easy to bulge and deform after the cold heading extrusion is carried out on the metal plate in the cold heading process in the prior art. The lower template is provided with the deformation limiting block attached to the side face of the cold heading area, and the edge of the plate to be subjected to limiting by the deformation limiting block in the extrusion process after the plate to be subjected to cold heading is placed in the cold heading area, so that the side face of the plate is not easy to bulge.
Description
Technical Field
The invention belongs to the technical field of cold heading processing, and particularly relates to a die and a process for resisting cold heading extrusion deformation of a stainless steel plate.
Background
The cold heading process is one of the novel processes for machining less and no cutting metal under pressure. The method is a processing method which utilizes the plastic deformation generated by metal under the action of external force and redistributes and transfers the volume of the metal by means of a die so as to form the required part or blank. The cold heading process is most suitable for producing standard fasteners such as bolts, screws, nuts, rivets, pins, and the like. In the cold heading process in the prior art, after the metal plate is subjected to cold heading extrusion, the edge of the plate is easy to bulge and deform.
For example, chinese utility model patent discloses a carbide cold-heading mould with protect function [ application number: 201921893345.9], the utility model comprises an upper die, a lower die and a lower die base, wherein the upper die is internally provided with a column-shaped groove, and an upper die stamping rod is arranged in the column-shaped groove; a cylindrical groove is also formed in the lower die, and a lower die punching rod is arranged in the cylindrical groove; the method is characterized in that: the bottom of the lower die is provided with a guide sleeve, the outer side of the guide sleeve is provided with four first wedge-shaped blocks, and the lower parts of the first wedge-shaped blocks are provided with spring limiting blocks; the bottom of the lower die is sleeved inside the lower die base.
The utility model discloses a have the advantage that can slow down the rigid contact of upper mould and bed die, but it still does not solve above-mentioned problem.
Disclosure of Invention
The invention aims to solve the problems and provides a die for cold heading extrusion deformation of a stainless steel plate which can enable the outer surface of a stamped material to be flat.
The invention also aims to solve the problems and provide a process for cold heading extrusion deformation of a stainless steel plate which can flatten the outer surface of the punched material.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a ke system corrosion resistant plate material cold-heading extrusion deformation's mould, includes cope match-plate pattern and lower bolster, the lower bolster surface has and is used for placing the cold-heading region of treating cold-heading panel, be equipped with cold-heading towards the needle on the cope match-plate pattern, the axial lead of cold-heading towards the needle passes through the cold-heading region, be equipped with the deformation stopper on the lower bolster, deformation stopper side surface and the laminating of cold-heading region mutually, be equipped with the slotting tool on the cope match-plate pattern, remove the cope match-plate pattern to the direction that is close to the lower bolster and can make the slotting tool and the laminating of one side surface that the cold-heading region.
In foretell system stainless steel sheet material cold-heading extrusion deformation's mould of gram, the deformation stopper is equipped with two and the symmetry is located the regional both sides of cold-heading, the slotting tool be equipped with two and with the deformation stopper one-to-one.
In foretell system stainless steel sheet material cold-heading extrusion deformation's mould of gram, deformation stopper and lower bolster sliding connection slide deformation stopper and can make the deformation stopper be close to or keep away from the cold-heading region, slotting tool and cope match-plate pattern fixed connection.
In foretell system stainless steel sheet material cold-heading extrusion deformation's mould of gram, the one end that the deformation stopper is close to the slotting tool has first guide part, the width of first guide part is diminished to the other end by the one end that is close to the deformation stopper gradually, the one end that the slotting tool is close to the deformation stopper has the second guide part, the width of second guide part is diminished to the other end by the one end that is close to the slotting tool gradually.
The die for restraining the stainless steel plate from cold heading and extrusion deformation further comprises a stripper plate capable of moving relative to the upper die plate, wherein the stripper plate is positioned between the upper die plate and the lower die plate, and the movable stripper plate can enable a cold heading punch pin to penetrate through the stripper plate.
In the die for cold heading extrusion deformation of the restrained stainless steel plate, when the stripper plate is pressed on the surface of the lower die plate, the end part of the slotting tool extends into the lower die plate.
A process for restraining stainless steel plate cold heading extrusion deformation comprises the following steps:
a feeding step: placing a plate to be subjected to cold heading in a cold heading area on a lower template;
and (3) extruding: the upper die plate and the stripper plate move close to the lower die plate, the slotting tool contacts with the deformation limiting block and pushes the deformation limiting block to be pressed on the plate to be subjected to cold heading, the upper die plate continues to move downwards, the cold heading punch is pressed on the plate to be subjected to cold heading, and a punching groove is formed on the plate to be subjected to cold heading to complete extrusion.
In the process for restraining the stainless steel plate from cold heading extrusion deformation, the process further comprises a pretreatment step before the feeding step, wherein the pretreatment step comprises the following steps: and processing the plate to be subjected to cold heading to form a bottom hole.
In the process for restraining the stainless steel plate from being deformed by cold heading and extrusion, the diameter of the bottom hole is smaller than that of the stamping groove, and the distance between the axis of the bottom hole and the deformation limiting blocks on the two sides is equal.
In the process for restraining the stainless steel plate by cold heading extrusion deformation, the extrusion step is followed by a material removing step, and the material removing step comprises the following steps: after the upper template and the stripper plate synchronously move upwards for a certain distance, the stripper plate moves downwards to separate the plate subjected to cold heading from the cold heading punch pin.
Compared with the prior art, the invention has the advantages that:
1. the lower template is provided with the deformation limiting block attached to the side face of the cold heading area, and the edge of the plate to be subjected to limiting by the deformation limiting block in the extrusion process after the plate to be subjected to cold heading is placed in the cold heading area, so that the side face of the plate is not easy to bulge.
2. According to the invention, the plate to be subjected to cold heading is pretreated to form the bottom hole before extrusion, and when the cold heading punch pin applies pressure to the plate to be subjected to cold heading, the deformation limiting block is extruded on the side surface of the plate, so that the deformation of the plate tends to flow towards the bottom hole, and the side surface of the plate is further ensured not to easily generate edge bulging.
Drawings
FIG. 1 is a schematic structural view of the invention prior to cold heading extrusion;
FIG. 2 is a schematic structural view after cold heading extrusion according to the present invention;
in the figure: the cold heading forming die comprises an upper die plate 1, a lower die plate 2, a cold heading area 3, a deformation limiting block 4, a slotting tool 5, a cold heading punch 6, a first guide part 7, a second guide part 8, a stripper plate 9, a plate to be cold headed 100, a punching groove 200 and a bottom hole 300.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
This embodiment provides a system corrosion resistant plate material cold-heading extrusion deformation's mould of gram, combines fig. 1 and fig. 2 to show, including cope match-plate pattern 1 and lower bolster 2, 2 surfaces of lower bolster have and are used for placing the cold-heading region 3 of treating cold-heading panel 100, be equipped with cold-heading punch pin 6 on the cope match-plate pattern 1, cold-heading punch pin 6's axial lead passes through cold-heading region 3, be equipped with deformation stopper 4 on the lower bolster 2, 4 side surfaces of deformation stopper laminate with cold-heading region 3 mutually. Here deformation stopper 4 only represents the position relation between deformation stopper 4 and the cold-heading region 3 when extrudeing with the regional 3 laminating mutually of cold-heading, and when non-extrusion, for example at material loading or take off the material in-process, deformation stopper 4 and the regional 3 alternate segregation of cold-heading. For example, the slotting tool 5 is arranged on the upper template 1, and the slotting tool 5 can be attached to one side surface of the deformation limiting block 4 far away from the cold heading area 3 by moving the upper template 1 towards the direction close to the lower template 2.
When the cold heading die is used, a plate to be subjected to cold heading 100 is placed in the cold heading area 3 on the lower template 2, the upper template 1 moves close to the lower template 2, the cold heading punch 6 is pressed on the plate to be subjected to cold heading 100, the deformation limiting block 4 is pressed on the side surface of the plate to be subjected to cold heading 100, and the cold heading punch 6 forms a punching groove 200 in the plate to be subjected to cold heading 100 to finish extrusion. Therefore, the lower template 2 is provided with the deformation limiting block 4 attached to the side face of the cold heading area 3, and the edge of the plate 100 to be cold headed is limited by the deformation limiting block 4 in the extrusion process after being placed in the cold heading area 3, so that the side face of the plate is not easy to bulge.
As shown in fig. 1, the deformation limiting blocks 4 are arranged on two sides of the cold heading region 3 and symmetrically arranged, and the slotting tools 5 are arranged on two sides and correspond to the deformation limiting blocks 4 one to one. This ensures that the external pressing force is uniformly distributed when the plate material 100 to be cold headed is pressed.
Preferably, the deformation limiting block 4 is connected with the lower template 2 in a sliding mode, the deformation limiting block 4 can be made to be close to or far away from the cold heading area 3 by sliding the deformation limiting block 4, and the slotting tool 5 is fixedly connected with the upper template 1. Thus, the loading and the unloading of the plate are convenient to realize.
Preferably, the one end that deformation stopper 4 is close to slotting tool 5 has first guide part 7, the width of first guide part 7 diminishes to the other end by the one end that is close to deformation stopper 4 gradually, the one end that slotting tool 5 is close to deformation stopper 4 has second guide part 8, the width of second guide part 8 diminishes to the other end by the one end that is close to slotting tool 5 gradually. First guide part 7 and second guide part 8 can mutually support and play the effect of direction for when slotting tool 5 inserted, slotting tool 5 had the effect that one was drawn in to deformation stopper 4, had further guaranteed deformation stopper 4 and had treated the pressure of cold-heading panel 100 side.
As shown in fig. 2, the cold heading punching die further comprises a stripper plate 9 which can move relative to the upper die plate 1, the stripper plate 9 is positioned between the upper die plate 1 and the lower die plate 2, the cold heading punching pin 6 can penetrate through the stripper plate 9 by the movable stripper plate 9, when the stripper plate 9 is pressed on the surface of the lower die plate 2, the end of the slotting tool 5 extends into the lower die plate 2. After extrusion is finished, the stripper plate 9 is convenient for separating the cold-headed plate from the cold-headed punch pin 6.
Example 2
The present embodiment provides a process of performing cold heading extrusion deformation on a stainless steel plate by using the die structure described in embodiment 1, which is shown in fig. 1 and 2, and includes the following steps:
a pretreatment step: processing and forming a bottom hole 300 on the plate 100 to be subjected to cold heading, wherein the diameter of the bottom hole 300 is smaller than that of the stamping groove 200, and the distance between the axis of the bottom hole 300 and the distance between the deformation limiting blocks 4 on the two sides are equal;
a feeding step: placing a plate 100 to be subjected to cold heading in a cold heading area 3 on a lower template 2;
and (3) extruding: the upper template 1 and the stripper plate 9 move close to the lower template 2, the slotting tool 5 contacts with the deformation limiting block 4 and pushes the deformation limiting block 4 to be pressed on the plate 100 to be subjected to cold heading, the upper template 1 continues to move downwards, the cold heading punch 6 is pressed on the plate 100 to be subjected to cold heading, and a punching groove 200 is formed in the plate 100 to be subjected to cold heading to complete extrusion;
material stripping: after the upper template 1 and the stripper plate 9 synchronously move upwards for a certain distance, the stripper plate 9 moves downwards to separate the cold-headed plate from the cold-headed punch pin 6.
Here, the lower rows indicate the moving directions of the upper and lower templates 1 and 2 approaching each other, and the upper rows indicate the moving directions of the upper and lower templates 1 and 2 moving away from each other.
Comparative example 1
The comparative example provides a cold heading extrusion deformation process, which comprises the following steps:
a feeding step: placing a plate 100 to be subjected to cold heading in a cold heading area 3 on a lower template 2;
and (3) extruding: the upper template 1 and the stripper plate 9 move close to the lower template 2, the cold heading punch pin 6 is pressed on the plate 100 to be subjected to cold heading, and a punching groove 200 is formed in the plate 100 to be subjected to cold heading to finish extrusion;
material stripping: after the upper template 1 and the stripper plate 9 synchronously move upwards for a certain distance, the stripper plate 9 moves downwards to separate the cold-headed plate from the cold-headed punch pin 6.
Here, the lower rows indicate the moving directions of the upper and lower templates 1 and 2 approaching each other, and the upper rows indicate the moving directions of the upper and lower templates 1 and 2 moving away from each other.
Comparative example 2
The comparative example provides a cold heading extrusion deformation process, which comprises the following steps:
a feeding step: placing a plate 100 to be subjected to cold heading in a cold heading area 3 on a lower template 2;
and (3) extruding: the upper template 1 and the stripper plate 9 move close to the lower template 2, the slotting tool 5 contacts with the deformation limiting block 4 and pushes the deformation limiting block 4 to be pressed on the plate 100 to be subjected to cold heading, the upper template 1 continues to move downwards, the cold heading punch 6 is pressed on the plate 100 to be subjected to cold heading, and a punching groove 200 is formed in the plate 100 to be subjected to cold heading to complete extrusion;
material stripping: after the upper template 1 and the stripper plate 9 synchronously move upwards for a certain distance, the stripper plate 9 moves downwards to separate the cold-headed plate from the cold-headed punch pin 6.
Here, the lower rows indicate the moving directions of the upper and lower templates 1 and 2 approaching each other, and the upper rows indicate the moving directions of the upper and lower templates 1 and 2 moving away from each other.
Comparative example 3
The comparative example provides a cold heading extrusion deformation process, which comprises the following steps:
a pretreatment step: processing and forming a bottom hole 300 on the plate 100 to be subjected to cold heading, wherein the diameter of the bottom hole 300 is smaller than that of the stamping groove 200, and the distance between the axis of the bottom hole 300 and the distance between the deformation limiting blocks 4 on the two sides are equal;
a feeding step: placing a plate 100 to be subjected to cold heading in a cold heading area 3 on a lower template 2;
and (3) extruding: the upper template 1 and the stripper plate 9 move close to the lower template 2, the cold heading punch pin 6 is pressed on the plate 100 to be subjected to cold heading, and a punching groove 200 is formed in the plate 100 to be subjected to cold heading to finish extrusion;
material stripping: after the upper template 1 and the stripper plate 9 synchronously move upwards for a certain distance, the stripper plate 9 moves downwards to separate the cold-headed plate from the cold-headed punch pin 6.
Here, the lower rows indicate the moving directions of the upper and lower templates 1 and 2 approaching each other, and the upper rows indicate the moving directions of the upper and lower templates 1 and 2 moving away from each other.
Application example 1
Cutting one plate into four plates with the areas of S0, namely a plate to be punched 1, a plate to be punched 2, a plate to be punched 3 and a plate to be punched 4.
Processing the plate 1 to be punched by the process recorded in the embodiment 2 to obtain a finished plate 1;
processing the plate 2 to be punched by the process recorded in the comparative example 1 to obtain a finished plate 2;
processing the plate 3 to be punched by the process recorded in the comparative example 2 to obtain a finished plate 3;
processing the plate 4 to be punched by the process recorded in the comparative example 3 to obtain a finished plate 4;
the cold heading punch pins 6 used in the above punching have the same size and shape, the projection areas of the side bulging parts of the finished plate 1, the finished plate 2, the finished plate 3 and the finished plate 4 on the plane of the lower surface of the plate are respectively measured as S1, S2, S3 and S4, and then are respectively divided by S0 to calculate the bulging edge rate, and the results are shown in the following table:
and (4) analyzing results: from the above table, it can be seen that the finished panel 1 has the least drum edge ratio and thus achieves the intended purpose of the invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms of the upper die plate 1, the lower die plate 2, the cold heading region 3, the deformation limiting block 4, the slotting tool 5, the cold heading punch pin 6, the first guide part 7, the second guide part 8, the stripper plate 9, the plate material to be cold headed 100, the punching groove 200, the bottom hole 300 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a gram system corrosion resistant plate material cold-heading extrusion deformation's mould, includes cope match-plate pattern (1) and lower bolster (2), lower bolster (2) surface has cold-heading region (3) that are used for placing treating cold-heading panel (100), be equipped with cold-heading punch pin (6) on cope match-plate pattern (1), the axial lead of cold-heading punch pin (6) passes through cold-heading region (3), its characterized in that: be equipped with deformation stopper (4) on lower bolster (2), deformation stopper (4) one side surface is laminated with cold-heading region (3) mutually, be equipped with slotting tool (5) on cope match-plate pattern (1), remove cope match-plate pattern (1) to the direction that is close to lower bolster (2) and can make slotting tool (5) and deformation stopper (4) keep away from one side surface of cold-heading region (3) and laminate mutually.
2. The die for restraining stainless steel plate cold heading extrusion deformation as claimed in claim 1, wherein: deformation stopper (4) are equipped with two and the symmetry is located cold-heading region (3) both sides, slotting tool (5) are equipped with two and with deformation stopper (4) one-to-one.
3. The die for restraining stainless steel plate cold heading extrusion deformation as claimed in claim 1, wherein: deformation stopper (4) and lower bolster (2) sliding connection, slip deformation stopper (4) can make deformation stopper (4) be close to or keep away from cold-heading region (3), slotting tool (5) and cope match-plate pattern (1) fixed connection.
4. The die for restraining stainless steel plate cold heading extrusion deformation as claimed in claim 3, wherein: the one end that deformation stopper (4) are close to slotting tool (5) has first guide part (7), the width of first guide part (7) diminishes to the other end by the one end that is close to deformation stopper (4) gradually, the one end that slotting tool (5) are close to deformation stopper (4) has second guide part (8), the width of second guide part (8) diminishes to the other end by the one end that is close to slotting tool (5) gradually.
5. The die for restraining stainless steel plate cold heading extrusion deformation as claimed in claim 1, wherein: the cold heading punching pin die is characterized by further comprising a stripper plate (9) capable of moving relative to the upper die plate (1), wherein the stripper plate (9) is located between the upper die plate (1) and the lower die plate (2), and the movable stripper plate (9) can enable the cold heading punching pin (6) to penetrate through the stripper plate (9).
6. The die for restraining stainless steel plate cold heading extrusion deformation as claimed in claim 5, wherein: when the stripper plate (9) is pressed on the surface of the lower template (2), the end part of the slotting tool (5) extends into the lower template (2).
7. A process for restraining stainless steel plate cold heading extrusion deformation is characterized by comprising the following steps:
a feeding step: placing a plate (100) to be subjected to cold heading in a cold heading area (3) on a lower template (2);
and (3) extruding: the upper die plate (1) and the stripper plate (9) move close to the lower die plate (2), the slotting tool (5) is in contact with the deformation limiting block (4) and pushes the deformation limiting block (4) to be pressed on the plate (100) to be subjected to cold heading, the upper die plate (1) continues to move downwards, the cold heading punch pin (6) is pressed on the plate (100) to be subjected to cold heading, and a punching groove (200) is formed in the plate (100) to be subjected to cold heading to complete extrusion.
8. The process of claim 7, wherein the stainless steel plate is subjected to cold heading extrusion deformation, and the process comprises the following steps: the method also comprises a pretreatment step before the feeding step, wherein the pretreatment step comprises the following steps: and machining a bottom hole (300) on the plate (100) to be subjected to cold heading.
9. The process of claim 8, wherein the stainless steel plate is subjected to cold heading extrusion deformation, and the process comprises the following steps: the diameter of the bottom hole (300) is smaller than that of the stamping groove (200), and the distance between the axial lead of the bottom hole (300) and the distance between the deformation limiting blocks (4) on the two sides are equal.
10. The process of claim 7, wherein the stainless steel plate is subjected to cold heading extrusion deformation, and the process comprises the following steps: the extrusion method also comprises a material removing step after the extrusion step, wherein the material removing step comprises the following steps: after the upper template (1) and the stripper plate (9) synchronously move upwards for a certain distance, the stripper plate (9) moves downwards to separate the plate subjected to cold heading from the cold heading punch pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095044.7A CN112916781A (en) | 2021-01-25 | 2021-01-25 | Die and process for restraining stainless steel plate from cold heading and extrusion deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095044.7A CN112916781A (en) | 2021-01-25 | 2021-01-25 | Die and process for restraining stainless steel plate from cold heading and extrusion deformation |
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| Publication Number | Publication Date |
|---|---|
| CN112916781A true CN112916781A (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110095044.7A Pending CN112916781A (en) | 2021-01-25 | 2021-01-25 | Die and process for restraining stainless steel plate from cold heading and extrusion deformation |
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| CN (1) | CN112916781A (en) |
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|---|---|---|---|---|
| US3513681A (en) * | 1966-10-13 | 1970-05-26 | Asea Ab | Means for performing an extrusion process in a cold forging press |
| CN101912939A (en) * | 2010-06-29 | 2010-12-15 | 宁波锐泰机械制造有限公司 | Extruding, upsetting and moulding die and corresponding upsetting method |
| CN207735532U (en) * | 2017-12-26 | 2018-08-17 | 苏州崴骏精密模具有限公司 | A kind of mold of the cold pier of the punching press of axis products |
| CN110193582A (en) * | 2019-06-19 | 2019-09-03 | 重庆巨泰机械有限公司 | A kind of openable and closable floating die assembly |
| CN209424470U (en) * | 2018-10-12 | 2019-09-24 | 东莞市锐嘉精密机械制造有限公司 | A kind of cold-heading punching compound die |
| CN110576132A (en) * | 2019-08-20 | 2019-12-17 | 顺科新能源技术股份有限公司 | Forming method, forming die and forming punch for annular thin-wall part |
| CN210848164U (en) * | 2019-11-05 | 2020-06-26 | 自贡安邦精特机械制造有限公司 | Hard alloy cold heading mould with protection function |
| CN211192009U (en) * | 2019-11-07 | 2020-08-07 | 自贡安邦精特机械制造有限公司 | Hard alloy cold heading die |
| CN211588412U (en) * | 2019-12-31 | 2020-09-29 | 浙江乾泰机车部件有限公司 | Screw cold heading mould |
-
2021
- 2021-01-25 CN CN202110095044.7A patent/CN112916781A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3513681A (en) * | 1966-10-13 | 1970-05-26 | Asea Ab | Means for performing an extrusion process in a cold forging press |
| CN101912939A (en) * | 2010-06-29 | 2010-12-15 | 宁波锐泰机械制造有限公司 | Extruding, upsetting and moulding die and corresponding upsetting method |
| CN207735532U (en) * | 2017-12-26 | 2018-08-17 | 苏州崴骏精密模具有限公司 | A kind of mold of the cold pier of the punching press of axis products |
| CN209424470U (en) * | 2018-10-12 | 2019-09-24 | 东莞市锐嘉精密机械制造有限公司 | A kind of cold-heading punching compound die |
| CN110193582A (en) * | 2019-06-19 | 2019-09-03 | 重庆巨泰机械有限公司 | A kind of openable and closable floating die assembly |
| CN110576132A (en) * | 2019-08-20 | 2019-12-17 | 顺科新能源技术股份有限公司 | Forming method, forming die and forming punch for annular thin-wall part |
| CN210848164U (en) * | 2019-11-05 | 2020-06-26 | 自贡安邦精特机械制造有限公司 | Hard alloy cold heading mould with protection function |
| CN211192009U (en) * | 2019-11-07 | 2020-08-07 | 自贡安邦精特机械制造有限公司 | Hard alloy cold heading die |
| CN211588412U (en) * | 2019-12-31 | 2020-09-29 | 浙江乾泰机车部件有限公司 | Screw cold heading mould |
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Application publication date: 20210608 |
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| RJ01 | Rejection of invention patent application after publication |