CN2686756Y - Perforating bullet case blank precision cold-extrusion die - Google Patents
Perforating bullet case blank precision cold-extrusion die Download PDFInfo
- Publication number
- CN2686756Y CN2686756Y CN 200420005127 CN200420005127U CN2686756Y CN 2686756 Y CN2686756 Y CN 2686756Y CN 200420005127 CN200420005127 CN 200420005127 CN 200420005127 U CN200420005127 U CN 200420005127U CN 2686756 Y CN2686756 Y CN 2686756Y
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- case blank
- extrusion die
- utility
- model
- perforating bullet
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Abstract
The utility model relates to a perforating bullet case blank precision cold-extrusion die. The utility model mainly solves the problems of raw material waste, low control accuracy, high rejection rate and short service life in the existing bullet case blank precision cold-extrusion die. The utility model is characterized in that the inner wall of a concave die body (1) and the outer wall of a convex body (2) are uniformly provided with bosses (3, 4) with arc transition. The utility model has the characteristics of raw material saving, high control accuracy, low rejection rate and long service life.
Description
Technical field:
The utility model relates to cold extrusion die used in the machining, belongs to a kind of perforating bullet shell case blank precise cold extrusion die.
Background technology:
In field of machining, cold extrusion is the workpiece blank cold processing technique of using always, because its working (machining) efficiency height, save raw material, be widely used, wherein Guan Jian machining tool is matching used concavo-convex mould, particularly uses more common in the processing of oil well logging perforation bullet shell case blank; The processing of shell case blank at present comprises rammer cake, once and secondary extrusion, and the shell case blank external cutting surplus of utilizing existing mold to squeeze out is 1.5-2mm, need carry out twice turning processing, and chipping allowance is big, the waste raw material, and control accuracy is low; In addition, existing mold easily causes inclined to one side extruding, and wall thickness deviation is 1-1.5mm, makes that the wall unevenness of shell case blank is even, the percent defective height, because discontinuity and easy fracture, service life is short when work for punch simultaneously.
The utility model content:
In order to overcome the deficiency that existing shell case blank cold extrusion die is wasted raw material, control accuracy is low, percent defective is high and service life is short, the utility model provides a kind of perforating bullet shell case blank precise cold extrusion die, and this cold extrusion die has raw material, control accuracy height, the low characteristics that reach long service life of percent defective of saving.
The technical solution of the utility model is: this perforating bullet shell case blank precise cold extrusion die comprises die body and body of punch, and the inwall of die body and the outer wall of body of punch have the boss of arc transition respectively.
The utlity model has following beneficial effect: the boss that has arc transition owing to the outer wall of the inwall of taking the die body in the such scheme and body of punch respectively, good directionality when die body and body of punch are used extruding shell case blank, be difficult for causing inclined to one side extruding, thereby can improve its control accuracy, and the external cutting surplus is 0.5-0.75mm, wall thickness deviation is 0.3-0.5mm, only need turning processing, save raw material, percent defective is low, long service life.
Description of drawings:
Accompanying drawing 1 is a structure cutaway view of the present utility model.
1-die body among the figure, 2-body of punch, 3,4-boss, 5-shell case blank.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this perforating bullet shell case blank precise cold extrusion die comprises die body 1 and body of punch 2, the outer wall of the inwall of die body 1 and body of punch 2 has the boss (3,4) of arc transition, boss (3 respectively, 4) be designed to the circular-arc drift that guarantees in the pressing process pre-determined bit, under guide effect, finish extrusion process, simultaneously because the centering better performances can reduce the extruding drag greatly, avoid stress to concentrate, improve the service life of body of punch 2; Because good directionality when die body 1 is used extruding shell case blank 5 with body of punch 2, be difficult for causing inclined to one side extruding, thereby can improve its control accuracy, shell case blank 5 external cutting surpluses are 0.5-0.75mm, and wall thickness deviation is 0.3-0.5mm, only need turning processing, improved operating efficiency, save raw material, percent defective is low, long service life.
Claims (1)
1, a kind of perforating bullet shell case blank precise cold extrusion die comprises die body (1) and body of punch (2), it is characterized in that: the outer wall of the inwall of die body (1) and body of punch (2) has the boss (3,4) of arc transition respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005127 CN2686756Y (en) | 2004-02-08 | 2004-02-08 | Perforating bullet case blank precision cold-extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005127 CN2686756Y (en) | 2004-02-08 | 2004-02-08 | Perforating bullet case blank precision cold-extrusion die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2686756Y true CN2686756Y (en) | 2005-03-23 |
Family
ID=34667906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420005127 Expired - Fee Related CN2686756Y (en) | 2004-02-08 | 2004-02-08 | Perforating bullet case blank precision cold-extrusion die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2686756Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972792A (en) * | 2010-10-22 | 2011-02-16 | 南京迪威尔重型锻造股份有限公司 | Hot reverse-extrusion forming mold for large cup shell |
| CN101623813B (en) * | 2009-08-12 | 2012-03-07 | 广州市钰诚贸易有限公司 | Production method of container and mould and rolling device used by same |
| CN105665537A (en) * | 2016-03-31 | 2016-06-15 | 山西新环粉末冶金有限公司 | Stretching die applied to production of bullet case of perforating bullet |
| CN105773089A (en) * | 2016-03-31 | 2016-07-20 | 山西新环粉末冶金有限公司 | Technological method for manufacturing bullet shell of perforating bullet through combination of hot extrusion and cold drawing |
| CN108568471A (en) * | 2017-03-07 | 2018-09-25 | 国民机械有限责任公司 | The set group of method and punch and mould for manufacturing and being formed cartridge clip housing blank |
| CN109396209A (en) * | 2018-12-03 | 2019-03-01 | 中北大学 | A kind of steel different wall thickness " H " shape connector synchronization mold for extruding and forming |
-
2004
- 2004-02-08 CN CN 200420005127 patent/CN2686756Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623813B (en) * | 2009-08-12 | 2012-03-07 | 广州市钰诚贸易有限公司 | Production method of container and mould and rolling device used by same |
| CN101972792A (en) * | 2010-10-22 | 2011-02-16 | 南京迪威尔重型锻造股份有限公司 | Hot reverse-extrusion forming mold for large cup shell |
| CN101972792B (en) * | 2010-10-22 | 2012-01-25 | 南京迪威尔重型锻造股份有限公司 | Hot reverse-extrusion forming mold for large cup shell |
| CN105665537A (en) * | 2016-03-31 | 2016-06-15 | 山西新环粉末冶金有限公司 | Stretching die applied to production of bullet case of perforating bullet |
| CN105773089A (en) * | 2016-03-31 | 2016-07-20 | 山西新环粉末冶金有限公司 | Technological method for manufacturing bullet shell of perforating bullet through combination of hot extrusion and cold drawing |
| CN105773089B (en) * | 2016-03-31 | 2018-01-09 | 山西新环粉末冶金有限公司 | A kind of hot extrusion is combined the process of making perforating charge cartridge case with cold stretch |
| CN108568471A (en) * | 2017-03-07 | 2018-09-25 | 国民机械有限责任公司 | The set group of method and punch and mould for manufacturing and being formed cartridge clip housing blank |
| CN109396209A (en) * | 2018-12-03 | 2019-03-01 | 中北大学 | A kind of steel different wall thickness " H " shape connector synchronization mold for extruding and forming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 Termination date: 20130208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |