CN1286596C - Non-trimming closed type tyre die forging technological method of middle part punched black skin kind forged piece - Google Patents
Non-trimming closed type tyre die forging technological method of middle part punched black skin kind forged piece Download PDFInfo
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- CN1286596C CN1286596C CN 200410012509 CN200410012509A CN1286596C CN 1286596 C CN1286596 C CN 1286596C CN 200410012509 CN200410012509 CN 200410012509 CN 200410012509 A CN200410012509 A CN 200410012509A CN 1286596 C CN1286596 C CN 1286596C
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- concavity
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Abstract
The present invention relates to a forging technology, more specifically a flashless closed type loose tooling forging technologic method of a black-surface disk-shaped forge piece with a punched hole in the center. The present invention comprises that a blank is prepared; the blank is put into a forging die for forging formation; the surface of the blank is punched into a concavity, and the blank is overturned and is put into the forging die for forging formation. The blank concavity punching process is favorable for metal flow, so that a die cavity is easy to suffuse. Consequently, the size requirements of a forge piece can be met without increasing blanking weight, which reduces forging cost and machining quantity. The diameter of the punched concavity in the surface of the blank is 80% to 90% of the diameter of the punched hole in the center of a formed forge piece. The concavity punching process according to the size can ensure the optimum effect of forge piece formation. In the technologic method of the present invention, before the blank is put into the forging die, the surface concavity punching process is carried out, which can effectively overcome the defect that no turnup corners and insufficient suffusion easily occur during forge piece formation in the prior art. Simultaneously, material and die cost are saved.
Description
Technical field
The present invention relates to Forging Technology, be specially the non-trimming enclosed loose tooling forging process of the casting skin cake forging of middle part punching.
Background technology
Non-trimming enclosed loose tooling forging materials are accurate, need not to excise the excess metal material after the forging moulding, and raw materials consumption is few, save material, and saved the side cut operation, and having saved cuts edge uses mold materials.Therefore the loose tooling forging of non-trimming enclosed obtains using more widely on processing casting skin cake forging, particularly the casting skin cake forging of middle part punching.During the forging moulding, often appearance does not play the angle, is not fully filled phenomenon but in process of production; For can not overcoming the angle, being not fully filled phenomenon, prior art will increase billet weight, certainly will cause the increase of the increase of forging raw material consumption, amount of machining increase, cost like this.
Summary of the invention
The phenomenon that can not be prone to the angle, is not fully filled when the present invention is directed to existing non-trimming enclosed loose tooling forging forging moulding provides a kind of and can not overcome the angle, is not fully filled the non-trimming enclosed loose tooling forging process of the casting skin cake forging of phenomenon.
The present invention adopts following technical scheme to realize: the non-trimming enclosed loose tooling forging process of the casting skin cake forging of middle part punching, comprise blank preparation, blank put into forging die carry out forging forming, earlier with blank surface open type towards recessed, upset is put into forging die and is carried out forging forming again.By the recessed metal flow that helps of dashing of blank, die cavity easily is full of, thereby just can reaches the forging ' s block dimension requirement not needing to increase under the cutting stock weight situation, reduced the forging cost, reduced amount of machining.
The blank surface dash the 80-90% that recessed diameter is the diameter of its middle part institute perforate after the forging moulding.Carry out the optimum efficiency that guarantees the forging moulding towards recessed with this size.
Process of the present invention is carried out surperficial open type earlier towards recessed before blank is put into forging die, the phenomenon that can not be prone to the angle, is not fully filled in the time of can effectively overcoming the moulding of prior art forging saves material and die cost simultaneously.
Description of drawings
Fig. 1 is the surface of adopting process of the present invention and the forging and pressing a kind of oil sealing forging blank structural representation after recessed;
Fig. 2 is the structural representation of this kind oil sealing forging blank surface towards recessed used base mould;
Fig. 3 is the structural representation of blank when forging and pressing in non-trimming enclosed loose tool;
Fig. 4 is the structural representation of (middle part is punching) after the oil seal final molding;
The specific embodiment
This specific embodiment is an example to forge and press a kind of oil seal.This oil seal belongs to the casting skin cake forging of middle part punching.
The non-trimming enclosed loose tooling forging process of this oil seal, comprise blank preparation, blank put into forging die carry out forging forming, earlier with blank surface open type towards recessed, upset is put into forging die and is carried out forging forming again.
Adopt base mould shown in Figure 2 with known forging and pressing or stamping technology, towards recessed, form the recessed blank that dashes shown in Figure 1, will put into forging die towards the upset of the blank after recessed (promptly towards recessed downward) again and carry out forging forming (seeing accompanying drawing 3) in blank surface open type.Take out the moulding forging, in forging middle part punching, finish the final molding (seeing accompanying drawing 4) of oil seal with known open die forging equipment.
The diameter of the mider hole of this oil seal is Φ 75, so the recessed diameter that dashes on blank surface is best with 60-67.5.
Claims (1)
1, a kind of non-trimming enclosed loose tooling forging process of casting skin cake forging of middle part punching, comprise blank preparation, blank put into forging die carry out forging forming, it is characterized by: earlier with blank surface open type towards recessed, upset is put into forging die and is carried out forging forming again; The blank surface dash the 80-90% that recessed diameter is the diameter of its middle part institute perforate after the forging moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012509 CN1286596C (en) | 2004-09-03 | 2004-09-03 | Non-trimming closed type tyre die forging technological method of middle part punched black skin kind forged piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012509 CN1286596C (en) | 2004-09-03 | 2004-09-03 | Non-trimming closed type tyre die forging technological method of middle part punched black skin kind forged piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597173A CN1597173A (en) | 2005-03-23 |
| CN1286596C true CN1286596C (en) | 2006-11-29 |
Family
ID=34662847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012509 Expired - Fee Related CN1286596C (en) | 2004-09-03 | 2004-09-03 | Non-trimming closed type tyre die forging technological method of middle part punched black skin kind forged piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1286596C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717014B (en) * | 2012-06-14 | 2014-07-02 | 宝鸡石油机械有限责任公司 | Method for freely forging casing elevator for petroleum drilling and production |
| CN106486838B (en) * | 2015-09-01 | 2020-06-30 | 富士康(昆山)电脑接插件有限公司 | Drawer seat |
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2004
- 2004-09-03 CN CN 200410012509 patent/CN1286596C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1597173A (en) | 2005-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061129 Termination date: 20120903 |