CN204276639U - Forging deep hole drift - Google Patents
Forging deep hole drift Download PDFInfo
- Publication number
- CN204276639U CN204276639U CN201420681194.1U CN201420681194U CN204276639U CN 204276639 U CN204276639 U CN 204276639U CN 201420681194 U CN201420681194 U CN 201420681194U CN 204276639 U CN204276639 U CN 204276639U
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- CN
- China
- Prior art keywords
- jumper bar
- deep hole
- ring
- hemispherical ends
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of forging deep hole drift, it comprises jumper bar, and this jumper bar is cylindrical bar, and the front end of described jumper bar is provided with hemispherical ends, and jumper bar is also provided with finishing ring, and this finishing ring and hemispherical ends are separated by and are arranged.Described finishing ring is elliptical ring, and the transverse of this elliptical ring is positioned on the pole face of jumper bar, and transverse length equals the diameter of jumper bar, and ellipse short shaft length is 1/5 ~ 1/8 of long axis length.The lower end of described finishing ring and the upper end standoff distance of hemispherical ends are 1/2 ~ 1/3 of jumper bar diameter.Forging deep hole punch structure deft design of the present utility model, pore-forming accuracy is high, quality good.
Description
Technical field
The utility model relates to forging molding technical field, particularly relates to the improvement for large forgings deep hole punch forming punch structure.
Background technology
Large forgings is extensively present in various plant equipment, as pipe parts such as a large amount of pipe fittings in the super-critical and ultra super-critical power unit system in nuclear power and thermoelectricity field, tube sheet, positive threeway, skew T and valve bodies, the making processing of ubiquity deep hole in the manufacturing process of these pipe fittings.In the punching press pore forming process of forging deep hole, because the frictional force between jumper bar and blank hole wall is larger, in addition hole wall is to the suction function of the binding force of plunger rod and drift end end, punching press back punching head cannot be extracted from blank, so be difficult to realize deep hole machining by punch forming process to large-size massive forging deep hole at present, can only on forging blank, by boring, the machine-tooled methods such as bore hole carry out deep-hole boring processing, there is many deficiencies in current this processing method: first stock utilization is low, the chip that hole produces in machining process becomes waste material and is difficult to reuse, form the significant wastage of high duty alloy material.They are two years old, machining can not change the institutional framework of hole wall periphery material, be unfavorable for the heat resisting and pressure resisting performance strengthening part, heat penetration, compacting is difficult to because large forgings belongs to the solid forging of thick cake, the thermodynamics and kinetics condition in steel ingot internal layer, skin, heart portion there are differences, there is the defects such as segregation, loose and shrinkage cavity in inside steel billet, and deep hole is often in crackle of steel billet, coarse-grain heart position the most serious, and machining is difficult to the uniformity ensureing the axial mechanical property of pore.Its three, process for machining flow process is complicated, production efficiency is low, and because the draw ratio of deep hole is comparatively large, add after need holing man-hour and carry out bore hole again to preliminary dimension, therefore workpiece need be transported in multiple operation, and the production cycle is long, and efficiency is low.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of rational in infrastructure, forging deep hole drift that punching press hole quality is high.
In order to solve the problems of the technologies described above, forging deep hole drift of the present utility model, comprises jumper bar, and this jumper bar is cylindrical bar, and the front end of described jumper bar is provided with hemispherical ends, and jumper bar is also provided with finishing ring, and this finishing ring and hemispherical ends are separated by and are arranged.
After adopting said structure, front end due to the drift body of rod is hemispherical ends, this structure be conducive to guiding into mesoporous metal therefrom heart position to hole wall position squeezing flow, reduce drift to the shear action of metal, ensure that the continuity of metal fibrous tissue, forging is organized be not destroyed, metal streamline is complete, forging mechanical property is enhanced, simultaneously drift in punching course by the extruding of metal to hole wall direction, make again the loose of blank metal inside further, the porosity defects such as shrinkage cavity can obtain more uniform compacting seam, the dendrite of as cast condition all directions can be smashed fully.Again owing to jumper bar being provided with finishing ring, this finishing ring can not only improve the dimensional accuracy in hole and the surface smoothness of hole wall greatly, without the need to follow-up reprocessing, and effectively enhanced the mechanical strength of hole wall metal by extruding, be conducive to high temperature resistant, the high voltage performance that improve deep hole forging.Also due to drift of the present utility model directly can carry out punch forming to large forgings but not cut pore-forming, greatly reduce the machining amount of material, stock utilization improved, even the core material that punching is formed also can all be recycled.Drift of the present utility model have rational in infrastructure, can effectively enhance productivity and the advantage of stock utilization.
Preferred embodiment of the present utility model, described finishing ring is elliptical ring, and the transverse of this elliptical ring is positioned on the pole face of jumper bar, and transverse length equals the diameter of jumper bar, and ellipse short shaft length is 1/5 ~ 1/8 of long axis length.Adopt oval hoop, and its major axis is positioned on plunger rod face, be conducive to extending drift to the squeezing action Distance geometry time of metal, and it is mild asymptotic extruded to realize hole wall metal, proved by repetition test, the shaping deep hole of this drift has surfacing, the advantage that pore-forming dimensional accuracy is high.
Further embodiment of the present utility model, described hemispherical ends is semicircle spheroid.This is rational in infrastructure, is convenient to make processing.
Preferred embodiment of the present utility model, the lower end of described finishing ring and the upper end standoff distance of hemispherical ends are 1/2 ~ 1/3 of jumper bar diameter.This structure is not only convenient to make, and can hold enough combustibles on jumper bar front end and phase spacer bar section, to guarantee that drift reliably moves back mould.
Accompanying drawing explanation
Also with detailed description of the invention, forging deep hole drift of the present utility model is described in further detail by reference to the accompanying drawings below.
Fig. 1 is the structural representation of a kind of detailed description of the invention of the utility model forging deep hole drift.
In figure, 1-jumper bar, 2-finishing ring, 3-hemispherical ends.
Detailed description of the invention
Forging deep hole drift as shown in Figure 1, jumper bar 1 is column structure, bar footpath is 259mm, the front end of jumper bar 1 is hemispherical ends 3, this hemispherical ends 3 is semicircle spheroid, the diameter of this semi-round ball is equal with the bar footpath of jumper bar 1, namely spherosome diameter is also 259mm, jumper bar 1 is provided with finishing ring 2, and finishing ring 2 is elliptical ring, and the major axis of elliptical ring is positioned on jumper bar 1 pole face bus, elliptical ring long axis length 2a equals the diameter of jumper bar 1, ellipse short shaft length 2b=40mm, is about 1/6 of long axis length, and the maximum outside diameter of elliptical ring is 302mm.The lower end of the finishing ring 2 in oval hoop and the upper end standoff distance of hemispherical ends 3 are 100mm.Above-mentioned jumper bar 1, finishing ring 2 and hemispherical ends 3 are linked as an entirety.
The above-mentioned a kind of concrete structure having enumerated the utility model forging deep hole drift, but the utility model is not limited to this.Through repetition test and sunykatuib analysis, the ellipse short shaft length of elliptical ring answers prioritizing selection to be 1/5-1/8 of long axis length; Between the lower end of finishing ring and the upper end of hemispherical ends 3, separation distance answers 1/2-1/3 of prioritizing selection jumper bar diameter.Therefore, as long as adopt hemispherical ends and finishing ring structure all to fall in protection domain of the present utility model on jumper bar.
Claims (4)
1. a forging deep hole drift, comprise jumper bar (1), this jumper bar (1) is cylindrical bar, it is characterized in that: the front end of described jumper bar (1) is provided with hemispherical ends (3), jumper bar (1) is also provided with finishing ring (2), and this finishing ring (2) and hemispherical ends (3) are separated by and are arranged.
2. deep hole drift according to claim 1, it is characterized in that: described finishing ring (2) is elliptical ring, the transverse of this elliptical ring is positioned on the pole face of jumper bar (1), and transverse length equals the diameter of jumper bar (1), and ellipse short shaft length is 1/5 ~ 1/8 of long axis length.
3. deep hole drift according to claim 1, is characterized in that: described hemispherical ends (3) is semicircle spheroid.
4. deep hole drift according to claim 1, is characterized in that: the lower end of described finishing ring (2) and the upper end standoff distance of hemispherical ends (3) are 1/2 ~ 1/3 of jumper bar (1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681194.1U CN204276639U (en) | 2014-11-14 | 2014-11-14 | Forging deep hole drift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681194.1U CN204276639U (en) | 2014-11-14 | 2014-11-14 | Forging deep hole drift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204276639U true CN204276639U (en) | 2015-04-22 |
Family
ID=52859837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420681194.1U Expired - Fee Related CN204276639U (en) | 2014-11-14 | 2014-11-14 | Forging deep hole drift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204276639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714646A (en) * | 2018-07-05 | 2018-10-30 | 苏州广型模具有限公司 | The mold and punching head of high life |
-
2014
- 2014-11-14 CN CN201420681194.1U patent/CN204276639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714646A (en) * | 2018-07-05 | 2018-10-30 | 苏州广型模具有限公司 | The mold and punching head of high life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160907 Address after: 201109 Shanghai city Minhang District humin Road No. 3082 Patentee after: Shanghai Xin Min Heavy Duty Forging Co., Ltd. Address before: 224200 Dongtai Economic Development Zone, Yancheng City, No. nine weft Road No. 8, Jiangsu Patentee before: Shanghai new min (Dongtai) Heavy Forging Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |