CN204817528U - Cold extruding die of perforation shell case - Google Patents
Cold extruding die of perforation shell case Download PDFInfo
- Publication number
- CN204817528U CN204817528U CN201520368472.2U CN201520368472U CN204817528U CN 204817528 U CN204817528 U CN 204817528U CN 201520368472 U CN201520368472 U CN 201520368472U CN 204817528 U CN204817528 U CN 204817528U
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- punch
- pad
- die
- column
- right cylinder
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Abstract
The utility model relates to a cold extrusion technical field, in particular to cold extruding die of perforation shell case, including die, terrace die, punch pad and drift, the drift by outer toward interior divide in proper order be equipped with in straight shell of column, straighten shell of column and little straight shell of column greatly, little straight shell of column passes through two bearing fixedly connected with gears, the perforation looks toe joint of this gear and terrace die, in straight shell of column be towards well terminal surface with the big connection face of straightening the shell of column, towards well terminal surface and terrace die terminal surface on same horizontal plane, the punch pad passes through screw and terrace die looks fixed connection behind the straight shell of column, the inner chamber circle wall of die and the excircle wall of terrace die are from having set gradually sizing cylindrical section, big reducing cylindrical section and little reducing cylindrical section outward toward the lining. Using the utility model discloses the time, guaranteed that there is the homogenizing wall thickness degree in the shell case blank, reduced the wall thickness, carry high yield, former NULL reduces production cost is reduced. The utility model has the advantages of simple structure, it is reasonable to set up, and the cost of manufacture is low.
Description
Technical field
The utility model relates to cold extruding technique field, particularly a kind of cold extrusion die of perforation shell case.
Background technology
Perforation shell case is one of main building block of perforating bullet, and shell case processing technology common is at present mainly: the first step, easily extended steel roundwood bar blanking; Second step, hydraulic press are cold extrusion shaped; 3rd step, lathe are rough turn, fine turning outer circle profile; The flat small end end face of 4th step, lathe; 5th step, milling primacord groove.The problems such as a long time, it is even that cold extrusion shaped cartridge case blank exists wall unevenness, and percent defective is high.In order to address this problem, cold extrusion shaped cartridge case blank wall thickness must strengthen, and then carrys out machining surplus by lathe, both wastes raw material like this, reduce production efficiency again, causes processing cost high.Therefore be necessary to carry out technological innovation further to the cold extruding die lamps structure of existing perforation shell case.
Utility model content
The purpose of this utility model is defect for prior art and deficiency, provides a kind of structure simple, the cold extrusion die of perforation shell case reasonable in design, easy to use.
For achieving the above object, the technical solution adopted in the utility model is:
The cold extrusion die of a kind of perforation shell case described in the utility model, comprise die, punch, punch pad and drift, described drift is arranged with middle right cylinder section, large right cylinder section and little right cylinder section from outer successively toward interior, little right cylinder section is fixedly connected with gear by two bearings, the perforation phase toe joint of this gear and punch; The joint face of middle right cylinder section and large right cylinder section is end face in punching, and in punching, end face and punch end face are in same level; Punch pad is fixedly connected by screw and punch through after right cylinder section; The inner chamber circle wall of described die and the cylindrical wall of punch are from being disposed with sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section outward inward.
Further, it includes pad, and pad is arranged in punch pad lower surface and punching between end face, and punch pad lower surface is provided with the cannelure matched with pad, and pad one end stretches out in outside cannelure, and pad adopts elastomeric material to be made.
After adopting said structure, the utility model beneficial effect is: the cold extrusion die of a kind of perforation shell case described in the utility model, comprise die, punch, punch pad and drift, described drift is arranged with middle right cylinder section, large right cylinder section and little right cylinder section from outer successively toward interior, little right cylinder section is fixedly connected with gear by two bearings, the perforation phase toe joint of this gear and punch; The joint face of middle right cylinder section and large right cylinder section is end face in punching, and in punching, end face and punch end face are in same level; Punch pad is fixedly connected by screw and punch through after right cylinder section; The inner chamber circle wall of described die and the cylindrical wall of punch are from being disposed with sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section outward inward.When using the utility model, drift drives punch toward cavity direction extruding in die, and in extrusion process, due to gear segment and the perforation phase toe joint of punch, punch irregularly can produce rotation, so just can ensure that shell case body is subject to uniform pressure; Simultaneously by arranging sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section at the inner chamber circle wall of die and the cylindrical wall of punch, make extruding force iterative method, largely avoid stress and concentrate, greatly ensure that cartridge case blank exists Wall thickness uniformity, reduce wall thickness, improve yield rate; Reduce follow-up lathe process amount simultaneously, improve shell case production efficiency, reduce raw material usage, reduce production cost.It is simple that the utility model has structure, arranges rationally, the advantages such as cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional view in Fig. 1;
Description of reference numerals:
1, die; 21, punch; 22, punch pad; 23, drift; 3, shell case body;
4, pad; 5, gear; 6, bearing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1-2, the cold extrusion die of a kind of perforation shell case described in the utility model, comprises die 1 and punch 21; Shell case body 3 is arranged between die 1 and punch 21; It also comprises punch pad 22 and drift 23, and described drift 23 is arranged with middle right cylinder section, large right cylinder section and little right cylinder section from outer successively toward interior, and little right cylinder section is fixedly connected with gear 5 by two bearings 6, the perforation phase toe joint of this gear 5 and punch 21.
The joint face of middle right cylinder section and large right cylinder section is end face in punching, and in punching, end face and punch 21 end face are in same level; Punch pad 22 is fixedly connected by screw and punch 21 through after right cylinder section.
The inner chamber circle wall of described die 1 and the cylindrical wall of punch 21 are from being disposed with sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section outward inward; The outside diameter of sizing cylindrical section is identical with the large outside diameter of large reducing cylindrical section; The little outside diameter of large reducing cylindrical section is identical with the large outside diameter of little reducing cylindrical section.
Further, it includes pad 4, and pad 4 is arranged in punch pad 22 lower surface and punching between end face, and punch pad 22 lower surface is provided with the cannelure matched with pad 4, pad 4 one end stretches out in outside cannelure, and pad 4 adopts elastomeric material to be made.The setting of pad 4 is the steadiness ensureing that drift 23 is connected with punch 21, guarantees to allow punch pad 22 be fixed in punch 21 by drift 23.
When using the utility model, drift drives punch toward cavity direction extruding in die, and in extrusion process, due to gear segment and the perforation phase toe joint of punch, punch irregularly can produce rotation, so just can ensure that shell case body is subject to uniform pressure; Simultaneously by arranging sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section at the inner chamber circle wall of die and the cylindrical wall of punch, make extruding force iterative method, largely avoid stress and concentrate, greatly ensure that cartridge case blank exists Wall thickness uniformity, reduce wall thickness, improve yield rate; Reduce follow-up lathe process amount simultaneously, improve shell case production efficiency, reduce raw material usage, reduce production cost.In addition, this structure is simple, reasonable in design, low cost of manufacture.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (2)
1. a cold extrusion die for perforation shell case, comprises die (1) and punch (21); It is characterized in that: it also comprises punch pad (22) and drift (23), described drift (23) is arranged with middle right cylinder section, large right cylinder section and little right cylinder section from outer successively toward interior, little right cylinder section is fixedly connected with gear (5) by two bearings (6), the perforation phase toe joint of this gear (5) and punch (21);
The joint face of middle right cylinder section and large right cylinder section is end face in punching, and in punching, end face and punch (21) end face are in same level; Punch pad (22) is fixedly connected by screw and punch (21) through after right cylinder section;
The inner chamber circle wall of described die (1) and the cylindrical wall of punch (21) are from being disposed with sizing cylindrical section, large reducing cylindrical section and little reducing cylindrical section outward inward.
2. the cold extrusion die of a kind of perforation shell case according to claim 1, it is characterized in that: it includes pad (4), pad (4) to be arranged in punch pad (22) lower surface and punching between end face, punch pad (22) lower surface is provided with the cannelure matched with pad (4), pad (4) one end stretches out in outside cannelure, and pad (4) adopts elastomeric material to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520368472.2U CN204817528U (en) | 2015-06-02 | 2015-06-02 | Cold extruding die of perforation shell case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520368472.2U CN204817528U (en) | 2015-06-02 | 2015-06-02 | Cold extruding die of perforation shell case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204817528U true CN204817528U (en) | 2015-12-02 |
Family
ID=54675170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520368472.2U Expired - Fee Related CN204817528U (en) | 2015-06-02 | 2015-06-02 | Cold extruding die of perforation shell case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204817528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326066A (en) * | 2018-02-22 | 2018-07-27 | 徐州工程学院 | Compound super abrasive blade pinches mold |
-
2015
- 2015-06-02 CN CN201520368472.2U patent/CN204817528U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326066A (en) * | 2018-02-22 | 2018-07-27 | 徐州工程学院 | Compound super abrasive blade pinches mold |
| CN108326066B (en) * | 2018-02-22 | 2023-08-15 | 徐州工程学院 | Extrusion die for composite super wear-resistant blade |
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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: 20151202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |