CN218503245U - Preforming backward extrusion die of variable cross-section annular ring rolling forging - Google Patents
Preforming backward extrusion die of variable cross-section annular ring rolling forging Download PDFInfo
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- CN218503245U CN218503245U CN202222668986.2U CN202222668986U CN218503245U CN 218503245 U CN218503245 U CN 218503245U CN 202222668986 U CN202222668986 U CN 202222668986U CN 218503245 U CN218503245 U CN 218503245U
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- 238000005242 forging Methods 0.000 title claims abstract description 40
- 238000001125 extrusion Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 title claims description 9
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
A pre-forming backward extrusion female die of a variable cross-section annular ring-rolled forging is of a hollow cylinder structure, wherein the outer diameter surface of the female die is a fixed surface and is used for being connected with a die holder and a pressing device; the inner diameter surface of the female die is a working surface and consists of a cylindrical part, a first conical part and a second conical part, wherein the cylindrical part is matched with an upper cylinder of the forging, the first conical part is matched with a first transition cone of the forging, the second conical part is matched with a second transition cone of the forging, and the female die can be suitable for manufacturing variable-section annular ring-rolled forgings.
Description
Technical Field
The utility model belongs to the technical field of the forging mould technique and specifically relates to a preforming backward extrusion die of variable cross section annular ring rolling forging is related to.
Background
As is known, a forging is a workpiece or blank obtained by forging deformation of a metal blank; according to different application fields, the shapes of the forgings can be properly distinguished;
the variable cross-section annular forging is divided into four parts, namely an upper cylinder, a first transition cone, a second transition cone and a lower cylinder, along the change of the cross-section size, and the variable cross-section annular forging needs to be subjected to the steps of blanking, heating, material section upsetting, blank reverse extrusion, blank bottom cutting and blank rolling and reaming in the machining process, wherein the cross-section of the reverse extrusion blank subjected to the bottom cutting step is rectangular, the sizes of all position intervals are basically consistent, but the sizes of the cross-section of the forging at all position intervals after the reaming step are different; in addition, because the difference between the section shape of the blank and the section shape of the finished product of the forged piece is large, the metal flow direction of the blank at the section size change position is not easy to control when the blank is rolled and reamed, and the size control of each position interval of the forged piece is not facilitated;
in summary, there is a need in the market for a rolling reaming die suitable for variable cross-section annular forgings.
Disclosure of Invention
In order to overcome not enough among the background art, the utility model discloses a preforming backward extrusion die of variable cross section annular ring rolling forging.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pre-forming backward extrusion female die of a variable cross-section annular ring-rolled forging is of a hollow cylinder structure, wherein the outer diameter surface of the female die is a fixed surface and is used for being connected with a die holder and a pressing device; the inner diameter surface of the female die is a working surface and consists of a cylindrical part, a first conical part and a second conical part, wherein the cylindrical part is matched with the upper cylinder of the forging, the first conical part is matched with the first transition cone of the forging, and the second conical part is matched with the second transition cone of the forging.
Preferably, the upper end and the lower end of the outer diameter surface of the female die are respectively provided with a cylindrical surface, the diameter of the cylindrical surface is smaller than that of the middle part of the outer diameter surface, and the two cylindrical surfaces are respectively correspondingly installed with the die holder and the pressing device.
Preferably, the middle part of the outer diameter surface of the female die is provided with two symmetrical conical surfaces, and the large diameter ends of the two conical surfaces are corresponding.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a preforming backward extrusion die of variable cross section annular ring rolling forging, through establish the inner diameter face of die into with the shape matched with structure of forging to can produce the blank similar with variable cross section annular forging outline, and then when subsequent roll reaming, be favorable to the metal in the flow of cross sectional dimension change department, guarantee that the size within a definite time of each position interval of forging meets the requirements.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the extruded blank of the present invention;
FIG. 3 is a schematic structural view of a variable cross-section annular ring-rolled forging.
In the figure: 1. an outer diameter surface; 101. a cylindrical surface; 102. a conical surface; 2. an inner diameter surface; 201. a cylindrical portion; 202. a first conical portion; 203. a second conical portion; 3. and (5) blank.
Detailed Description
In the following description, the technical solution of the present invention will be described with reference to the accompanying drawings in the embodiment of the present invention, it should be understood that, if there are the indicated positions or positional relationships such as "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of description, it is not intended to indicate or imply that the indicated device or element must have a specific position:
the preforming reverse extrusion die for the variable cross-section annular ring-rolled forging piece is in a hollow cylinder structure, wherein an outer diameter surface 1 of the die is a fixed surface, the outer diameter surface 1 is used for being connected with a die holder and a pressing device, in addition, the upper end and the lower end of the outer diameter surface 1 of the die are respectively provided with a cylindrical surface 101, the diameter of the cylindrical surface 101 is smaller than that of the middle part of the outer diameter surface 1, the two cylindrical surfaces 101 are respectively and correspondingly installed with the die holder and the pressing device, so that the middle part of the die is in a protruding state, a certain vertical axial component force can be provided for the die, the structural stability of the die is improved, according to needs, the middle part of the outer diameter surface 1 of the die is provided with two symmetrical conical surfaces 102, the large diameter ends of the two conical surfaces 102 correspond to each other, the vertical axial component force can be provided for the die through the conical surfaces 102, and the structural stability of the die is further ensured;
the inner diameter surface 2 of the female die is a working surface and is used for abutting against the outer surface of a forging piece, the inner diameter surface 2 is composed of a cylindrical portion 201, a first conical portion 202 and a second conical portion 203, the cylindrical portion 201 is matched with an upper cylinder of the forging piece, the first conical portion 202 is matched with a first transition cone of the forging piece, and the second conical portion 203 is matched with a second transition cone of the forging piece, so that a blank 3 similar to the outer contour of the variable-section annular forging piece can be manufactured by using the female die, further, when subsequent rolling and reaming are carried out, the flowing of metal at the position where the section size changes is facilitated, the size of each position section of the forging piece is ensured to meet the requirements, and the yield of the forging piece is improved.
The details of the present invention not described in detail are prior art, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claim concerned.
Claims (3)
1. The utility model provides a preforming backward extrusion die of variable cross section annular ring rolling forging, characterized by: the die is of a hollow cylinder structure, wherein an outer diameter surface (1) of the female die is a fixed surface, and the outer diameter surface (1) is used for being connected with the die holder and the pressing device; the inner diameter surface (2) of the female die is a working surface, the inner diameter surface (2) is composed of a cylindrical part (201), a first conical part (202) and a second conical part (203), wherein the cylindrical part (201) is matched with an upper cylinder of the forging, the first conical part (202) is matched with a first transition cone of the forging, and the second conical part (203) is matched with a second transition cone of the forging.
2. A pre-forming back-extrusion die for a variable cross-section annular rolled forging piece as claimed in claim 1, wherein: the upper end and the lower end of the outer diameter surface (1) of the female die are both provided with cylindrical surfaces (101), the diameter of each cylindrical surface (101) is smaller than that of the middle part of the outer diameter surface (1), and the two cylindrical surfaces (101) are respectively installed corresponding to the die holder and the pressing device.
3. A pre-forming back-extrusion die for a variable cross-section annular rolled forging piece as claimed in claim 1, wherein: the middle part of the outer diameter surface (1) of the female die is provided with two symmetrical conical surfaces (102), and the large-diameter ends of the two conical surfaces (102) correspond to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222668986.2U CN218503245U (en) | 2022-10-11 | 2022-10-11 | Preforming backward extrusion die of variable cross-section annular ring rolling forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222668986.2U CN218503245U (en) | 2022-10-11 | 2022-10-11 | Preforming backward extrusion die of variable cross-section annular ring rolling forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218503245U true CN218503245U (en) | 2023-02-21 |
Family
ID=85215304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222668986.2U Active CN218503245U (en) | 2022-10-11 | 2022-10-11 | Preforming backward extrusion die of variable cross-section annular ring rolling forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218503245U (en) |
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2022
- 2022-10-11 CN CN202222668986.2U patent/CN218503245U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Patentee after: Luoyang Luoxi precision forging Heavy Industry Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China Patentee before: Luoyang Luoxi precision forging Heavy Industry Co.,Ltd. |
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| CP03 | Change of name, title or address |