CN113634701B - Forging and demolding method of electric screw press without upper ejection - Google Patents
Forging and demolding method of electric screw press without upper ejection Download PDFInfo
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- CN113634701B CN113634701B CN202110953008.XA CN202110953008A CN113634701B CN 113634701 B CN113634701 B CN 113634701B CN 202110953008 A CN202110953008 A CN 202110953008A CN 113634701 B CN113634701 B CN 113634701B
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- forging
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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
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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
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a forging demoulding method of an electric screw press without upper ejection, which comprises three mould transformation means of adopting a slope different demoulding method, an arc different demoulding method and a bin part resistance method. Wherein, the upper and lower mould slopes are designed to be different by adopting a slope different demoulding method; adopting an arc-shaped dissimilar demoulding method to design the arc radius of the intersection of the upper mould inclination and the upper end surface of the arbor opening to be larger than the arc radius of the intersection of the lower mould inclination and the lower end surface of the arbor opening; the bin part of the burr groove is placed on the lower die by adopting a bin part resistance method, and the joint of the bin part and the arbor opening is designed to be connected through inclination. The method is simple, easy and practical, and saves the improvement cost of an upper ejection system because of increasing the improvement cost of the upper ejection system.
Description
Technical Field
The invention belongs to the technical field of forging, and particularly relates to a forging and demolding method of an electric screw press without upper ejection.
Background
The electric screw press has been popular in the forging industry due to the simple structure, but part of the electric screw press does not have an upper ejection function, so that the forging difficulty is high on the electric screw press without upper ejection, and the main problem is that the forging is clamped on an upper die after forging and cannot be demolded. In general, the electric screw press needs to be remodeled, and an ejection system is additionally arranged, but the remodelling cost is high, and the remodelling period is long.
Disclosure of Invention
First, the technical problem to be solved
The invention provides a forging and demolding method of an electric screw press without upper ejection, which aims to solve the technical problem that a forge piece is clamped on an upper mold after forging and cannot be demolded when being forged on the electric screw press without upper ejection.
(II) technical scheme
In order to solve the technical problems, the invention provides a forging demoulding method of an electric screw press without upper ejection, which specifically comprises three mould transformation means of adopting a slope different demoulding method, an arc different demoulding method and a bin part resistance method; wherein, the upper and lower mould slopes are designed to be different by adopting a slope different demoulding method; adopting an arc-shaped dissimilar demoulding method to design the arc radius of the intersection of the upper mould inclination and the upper end surface of the arbor opening to be larger than the arc radius of the intersection of the lower mould inclination and the lower end surface of the arbor opening; the bin part of the burr groove is placed on the lower die by adopting a bin part resistance method, and the joint of the bin part and the arbor opening is designed to be connected through inclination.
Further, the upper draft angle was designed to be 2 degrees greater than the lower draft angle by the draft-angle-different stripping method.
Further, the arc radius of the intersection of the upper draft angle and the upper end face of the arbor port is designed to be 2mm larger than the arc radius of the intersection of the lower draft angle and the lower end face of the arbor port by adopting an arc-dissimilar demoulding method.
Further, the bin part of the burr groove is placed on the lower die by adopting a bin part resistance method, and the joint of the bin part and the arbor opening is designed to be connected through a 5-degree inclination.
(III) beneficial effects
The invention provides a forging demoulding method of an electric screw press without upper ejection, which comprises three mould transformation means of adopting a slope different demoulding method, an arc different demoulding method and a bin part resistance method. Wherein, the upper and lower mould slopes are designed to be different by adopting a slope different demoulding method; adopting an arc-shaped dissimilar demoulding method to design the arc radius of the intersection of the upper mould inclination and the upper end surface of the arbor opening to be larger than the arc radius of the intersection of the lower mould inclination and the lower end surface of the arbor opening; the bin part of the burr groove is placed on the lower die by adopting a bin part resistance method, and the joint of the bin part and the arbor opening is designed to be connected through inclination. The method is simple, easy and practical, and saves the improvement cost of an upper ejection system because of increasing the improvement cost of the upper ejection system.
Drawings
FIG. 1 is a schematic diagram of a mold structure before modification;
fig. 2 is a schematic diagram of a modified mold structure according to an embodiment of the present invention.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
The embodiment provides a forging demolding method of an electric screw press without upper ejection, because the electric screw press has no upper ejection function but has a lower ejection function, in order to avoid that a forging piece is clamped on an upper die and cannot be demolded, the resistance of the upper die is reduced by increasing the resistance of the lower die, and the forging piece can be clamped on the lower die.
The forging demolding method specifically comprises three mold transformation means of a slope-different demolding method, an arc-different demolding method and a bin part resistance method, and the mold structures before and after transformation are respectively shown in fig. 1 and 2.
When the mould is designed according to the conventional design, the upper mould inclination and the lower mould inclination are the same, and when the mould is designed, the upper mould inclination and the lower mould inclination are designed to be different by adopting an inclination different demoulding method, so that the upper mould inclination is 2 degrees larger than the lower mould inclination, for example, the upper mould demoulding inclination is 7 degrees, and the lower mould inclination is 5 degrees.
When the die is designed according to the conventional method, the arc size of the intersection of the forging and the arbor opening is the same, when the die is designed, the arc radius of the intersection of the upper die inclination and the arbor opening upper end face is designed to be 2mm larger than the arc radius of the intersection of the lower die inclination and the arbor opening lower end face by adopting an arc different demoulding method, for example, the arc radius of the intersection of the upper die inclination and the arbor opening upper end face is 4mm, and the arc radius of the intersection of the lower die inclination and the arbor opening lower end face is 2mm.
In the invention, when designing the mould, the bin part of the burr groove is placed on the lower mould by adopting a bin part resistance method, and the joint of the bin part and the arbor opening is connected by 5 degrees of inclination.
The invention reforms the mould adopted by the electric screw press without upper ejection by the three means, can solve the technical problem that the forging piece is clamped on the upper mould after forging and can not be demoulded.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (1)
1. The forging and demolding method of the upper ejection-free electric screw press is characterized by comprising three mold transformation means of a slope-different demolding method, an arc-different demolding method and a bin part resistance method; the used die comprises an upper die and a lower die, wherein the upper die cavity and the lower die cavity are respectively provided with an inclination, and a burr groove is arranged between the upper die and the lower die; wherein, the slope of the upper die cavity is designed to be 2 degrees larger than the slope of the lower die cavity by adopting a slope-different demoulding method; adopting a circular arc dissimilar demoulding method to design the circular arc radius of the intersection of the upper die bevel edge and the upper end surface of the bridge opening to be 2mm larger than the circular arc radius of the intersection of the lower die bevel edge and the lower end surface of the bridge opening; the bin part of the burr groove is placed on the lower die by adopting a bin part resistance method, and the joint of the bin part and the bridge opening is designed to be connected through a 5-degree inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953008.XA CN113634701B (en) | 2021-08-19 | 2021-08-19 | Forging and demolding method of electric screw press without upper ejection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953008.XA CN113634701B (en) | 2021-08-19 | 2021-08-19 | Forging and demolding method of electric screw press without upper ejection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113634701A CN113634701A (en) | 2021-11-12 |
| CN113634701B true CN113634701B (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110953008.XA Active CN113634701B (en) | 2021-08-19 | 2021-08-19 | Forging and demolding method of electric screw press without upper ejection |
Country Status (1)
| Country | Link |
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| CN (1) | CN113634701B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444294A1 (en) * | 1984-12-05 | 1986-06-05 | Miloslav Dipl.-Ing. 5620 Velbert Sulc | Drop-forging with asymmetric precavities |
| CN201183103Y (en) * | 2008-02-29 | 2009-01-21 | 上海医疗器械（集团）有限公司手术器械厂 | Novel flash form precise forging die |
| CN201889385U (en) * | 2010-11-16 | 2011-07-06 | 上海交大中京锻压有限公司 | Finish-forging die structure of stainless steel die forging product |
| CN202291192U (en) * | 2011-10-31 | 2012-07-04 | 东风锻造有限公司 | Preforging die of crank shaft |
| CN106363124A (en) * | 2016-12-09 | 2017-02-01 | 衡阳市大成锅炉有限公司 | Camshaft machining process and forging die |
| CN107470541A (en) * | 2017-09-14 | 2017-12-15 | 山西豪钢锻造股份有限公司 | Sprocket wheel forging molding process |
| CN113084064A (en) * | 2021-04-14 | 2021-07-09 | 西安三角防务股份有限公司 | Large titanium alloy deep cavity long box rib forging, die and forming method thereof |
-
2021
- 2021-08-19 CN CN202110953008.XA patent/CN113634701B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444294A1 (en) * | 1984-12-05 | 1986-06-05 | Miloslav Dipl.-Ing. 5620 Velbert Sulc | Drop-forging with asymmetric precavities |
| CN201183103Y (en) * | 2008-02-29 | 2009-01-21 | 上海医疗器械（集团）有限公司手术器械厂 | Novel flash form precise forging die |
| CN201889385U (en) * | 2010-11-16 | 2011-07-06 | 上海交大中京锻压有限公司 | Finish-forging die structure of stainless steel die forging product |
| CN202291192U (en) * | 2011-10-31 | 2012-07-04 | 东风锻造有限公司 | Preforging die of crank shaft |
| CN106363124A (en) * | 2016-12-09 | 2017-02-01 | 衡阳市大成锅炉有限公司 | Camshaft machining process and forging die |
| CN107470541A (en) * | 2017-09-14 | 2017-12-15 | 山西豪钢锻造股份有限公司 | Sprocket wheel forging molding process |
| CN113084064A (en) * | 2021-04-14 | 2021-07-09 | 西安三角防务股份有限公司 | Large titanium alloy deep cavity long box rib forging, die and forming method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 罗大金等.飞边桥.《镁合金锻压成形与模具》.中国轻工业出版社,2010, * |
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| CN113634701A (en) | 2021-11-12 |
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