CN102513396A - Cold extruding die for processing oil pump shaft of automobile - Google Patents
Cold extruding die for processing oil pump shaft of automobile Download PDFInfo
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- CN102513396A CN102513396A CN2011104468445A CN201110446844A CN102513396A CN 102513396 A CN102513396 A CN 102513396A CN 2011104468445 A CN2011104468445 A CN 2011104468445A CN 201110446844 A CN201110446844 A CN 201110446844A CN 102513396 A CN102513396 A CN 102513396A
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- oil pump
- pump shaft
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Abstract
The invention discloses a cold extruding die for processing an oil pump shaft of an automobile, which comprises an upper die frame, a lower die frame, a die frame sleeve, an upper punch head, a material ejecting rod, an upper die fixing sleeve, an upper punch fixing sleeve, an extrusion recessed die and a lower gasket. The upper die fixing sleeve is fixedly connected at the lower end of the upper die frame, the upper punch head fixing sleeve is fixedly installed in an inner cavity of the upper die fixing sleeve, the upper portion of the upper punch head is fixedly installed in an inner cavity of the upper punch head fixing sleeve, and the shape of the lower portion of the upper punch head is matched with the inner circular shape of a cold extrusion member of the oil pump shaft. The extrusion recessed die is fixedly installed in an inner cavity formed by the lower die frame and the die frame sleeve, the extrusion recessed die is formed by connecting an upper recessed die, a middle recessed die and a lower recessed die, so that extrusion cavities of the upper recessed die, the middle recessed die and the lower recessed die which are integrated are matched with the outer circular shape of the cold extrusion member of the oil pump shaft. The lower gasket is fixedly installed on the lower portion of an inner cavity of the lower die frame and at the lower end of the lower recessed die, and the material ejecting rod is inserted in an inner cavity of the lower gasket and the inner cavity of the lower die frame in penetrating mode.
Description
Technical field
The present invention relates to a kind of cold extrusion die, particularly a kind of processing automobile is with the cold extrusion die of oil pump shaft.
Background technology
Oil pump shaft is a kind of pipe fitting, and its material adopts S45C, and phosphorus content is 0.45%, belongs to medium carbon steel, and hardness is very high.At present, the common processing technology that adopts of pipe fitting has bar boring, tubing processing and bar bidirectional extrusion forming.General machining industry personage knows; The ratio of its length and interior circular diameter is less than 2.5 to 1 under the cold extrusion pipe fitting product normal condition; If greater than this numerical value, add that material also has many steps than hard and inside and outside circle, can only rely on the moulding of tubing metal cutting processing ability.And the metal cutting processing technology has not only increased processing step and processing cost, and makes the precision of product be difficult to control, has mismachining tolerance and accumulated error.And the structure of gasoline pump shaft just belong to length and interior circular diameter than greater than 2.5 to 1 and inside and outside circle also have the step of manying.The applicant has then overcome the conventional means of prior art, has invented an a kind of extrusion forming process and has processed this gasoline pump shaft that inside and outside circle has many steps, therefore needs supporting a kind of mould that is suitable for this technology.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art; The cold extrusion die of a kind of processing automobile with oil pump shaft is provided; It has realized that inside and outside circle has an extrusion modling of the oil pump shaft of many steps, and has realized few cutting of complicated shape pipe fitting or do not had cut.
The technical scheme that realizes above-mentioned purpose is: a kind of processing automobile comprises upper and lower mould bases, mould bases overcoat, upper punch, ejector beam, patrix fixed cover, upper punch fixed cover, upper punch, Extruding die and lower cushion block with the cold extrusion die of oil pump shaft, wherein:
Said patrix fixed cover is fixedly connected on the lower end of said top mold frame;
Said upper punch fixed cover is fixedly mounted in the inner chamber of said patrix fixed cover;
The top of said upper punch is fixedly mounted in the inner chamber of said upper punch fixed cover, and the interior toroidal of the cold-extruded part of the low profile of this upper punch and said oil pump pipe is adaptive;
Said Extruding die is fixedly mounted in the inner chamber of said mould bases down and said mould bases overcoat formation; This Extruding die is connected and composed by the upper cavity die with different extruding die cavities, middle die, lower cavity die, makes the cylindrical shape adaptation of cold-extruded part of extruding die cavity and the said oil pump shaft of the upper cavity die that fuses, middle die and lower cavity die;
Said lower cushion block is fixedly mounted on the inner chamber bottom of said mould bases down and is positioned at the lower end of said lower cavity die;
Said ejector beam interts in the inner chamber of said lower cushion block and said mould bases down.
Above-mentioned processing automobile is with the cold extrusion die of oil pump shaft; Wherein, The lower surface of said upper cavity die is provided with a groove, said in the upper surface of die be provided with the boss that a groove with said upper cavity die matees, lower surface of die is provided with a groove with the external appearance matching of said lower cavity die in this; Die and lower cavity die are embedded in respectively in the groove of said upper cavity die and middle die in said, so that said upper cavity die, middle die and lower cavity die connect into a whole die.
Above-mentioned processing automobile is with the cold extrusion die of oil pump shaft, and wherein, said cold extrusion die comprises that also one is installed in the inner chamber of said top mold frame and is positioned at the upper punch cushion block of the upper end of said upper punch.
Processing automobile of the present invention is with the technical scheme of the cold extrusion die of oil pump shaft, and it has realized that inside and outside circle has the extrusion modling processing of the gasoline pump shaft of many steps, and has realized few cutting of complicated shape pipe fitting or do not had cut; Can practice thrift former material spare and processing charges; And the inherent quality of the cold-extruded part of gasoline pump shaft is obviously improved, and precision is high, has improved the utilization rate of former material spare; Reduce processing capacity, reduce the percent defective of following process.
Description of drawings
Fig. 1 is the structural representation of the cold-extruded part of gasoline pump shaft;
Fig. 2 is the structural representation of processing automobile of the present invention with the cold extrusion die of oil pump shaft.
The specific embodiment
In order to understand technical scheme of the present invention better, below through embodiment particularly and combine accompanying drawing at length to explain:
See also Fig. 1 earlier; Circle 30 and cylindrical 40 in the cold-extruded part of gasoline pump shaft has; The interior circle 30 of this cold-extruded part has from childhood to the big three sections inner headed faces 31,32,33 that connect successively; These three sections inner headed faces, 31,32,33 corresponding internal diameters are respectively d1, d2, d3, and second section inner headed face 32 and the 3rd section inner headed face 33 pairing length to large end face of cold-extruded part are respectively n2, n3; Three sections inner headed faces 31,32 of cold-extruded part, between 33 respectively with 70 ° of chamfered transition; The cylindrical 40 of cold-extruded part have three sections with the corresponding periphery 41,42,43 of the internal diameter of cold-extruded part size ordering, the external diameters of periphery 41,42,43 correspondences of these three sections cold-extruded parts are respectively D1, D2, D3; Second section periphery 42 and the 3rd section periphery 43 pairing length to large end face of cold-extruded part are respectively w2, w3; Three sections peripheries 41,42 of cold-extruded part, between 43 respectively with 45 ° of chamfered transition; The entire length of cold-extruded part is L.
See also Fig. 2 again; Processing automobile of the present invention is with the cold extrusion die of oil pump shaft; Comprise top mold frame 1, upper punch cushion block 2, patrix fixed cover 3, upper punch fixed cover 4, upper punch 5, mould bases overcoat 6, Extruding die, following mould bases 8, lower cushion block 9 and ejector beam 10, wherein:
Upper punch cushion block 2 is installed in the inner chamber of top mold frame 1 and is positioned at the upper end of upper punch 5;
Patrix fixed cover 3 is fixedly connected on the lower end of top mold frame 1;
Upper punch fixed cover 3 is fixedly mounted in the inner chamber of patrix fixed cover 3;
The top of upper punch 5 is fixedly mounted in the inner chamber of upper punch fixed cover 3, and the interior toroidal of the low profile of this upper punch 5 and the cold-extruded part of oil pump shaft is adaptive;
Extruding die is fixedly mounted on down in the inner chamber of mould bases 8 and mould bases overcoat 6 formations, and this Extruding die is connected and composed by the upper cavity die 71 with different extruding die cavities, middle die 72, lower cavity die 73; The lower surface of upper cavity die 71 is provided with a groove; In the upper surface of die 72 be provided with the boss that a groove with upper cavity die 71 matees; Should in the lower surface of die 72 be provided with a groove with the external appearance matching of lower cavity die 73; Middle die 72 is embedded in respectively in the groove of upper cavity die 71 and middle die 72 with lower cavity die 73; So that upper cavity die 71, middle die 72 and lower cavity die 73 connect into a whole die, and make the cylindrical shape adaptation of cold-extruded part of extruding die cavity and the oil pump shaft of the upper cavity die 71, middle die 72 and the lower cavity die 73 that fuse;
Processing automobile of the present invention is to carry out the forward extrusion operation with the cold extrusion die of oil pump shaft in use; The blank 20 of straight tube-like is put into the extruding die cavity of upper cavity die 71; Bottom with upper punch 5 is inserted in the inner chamber of blank 20 again; The end face of ejector beam 10 is located at the stroke lower limit face place of upper punch 5, and extruder drives top mold frame 1, upper punch cushion block 2, patrix fixed cover 3 and progressively presses down together, drives upper punch fixed cover 4 and upper punch 5 and moves down together; The blank 20 that upper punch fixed cover 4 promotes straight tube-like also moves down die 72 and lower cavity die 73 in the entering; Make the blank 20 of straight tube-like progressively form three sections peripheries of cold-extruded part, 5 blank 20 inner chambers from straight tube-like of upper punch move down, and progressively form three sections inner headed faces of cold-extruded part simultaneously; Run into the upper surface of ejector beam 10 up to the lower surface of upper punch 5, thereby obtain the cold-extruded part that inside and outside circle has the gasoline pump shaft of many steps.
Processing automobile of the present invention has improved the dimensional stability of the cold-extruded part of oil pump shaft with the cold extrusion die of oil pump shaft; Inherent quality obviously improves; Surface roughness greatly reduces, and has reduced percent defective, has improved raw-material utilization rate; Reduce processing capacity, reduce the percent defective of following process.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (3)
1. a processing automobile comprises upper and lower mould bases, mould bases overcoat, upper punch and ejector beam with the cold extrusion die of oil pump shaft, it is characterized in that said cold extrusion die also comprises patrix fixed cover, upper punch fixed cover, upper punch, Extruding die and lower cushion block,
Said patrix fixed cover is fixedly connected on the lower end of said top mold frame;
Said upper punch fixed cover is fixedly mounted in the inner chamber of said patrix fixed cover;
The top of said upper punch is fixedly mounted in the inner chamber of said upper punch fixed cover, and the interior toroidal of the cold-extruded part of the low profile of this upper punch and said oil pump pipe is adaptive;
Said Extruding die is fixedly mounted in the inner chamber of said mould bases down and said mould bases overcoat formation; This Extruding die is connected and composed by the upper cavity die with different extruding die cavities, middle die, lower cavity die, makes the cylindrical shape adaptation of cold-extruded part of extruding die cavity and the said oil pump shaft of the upper cavity die that fuses, middle die and lower cavity die;
Said lower cushion block is fixedly mounted on the inner chamber bottom of said mould bases down and is positioned at the lower end of said lower cavity die;
Said ejector beam interts in the inner chamber of said lower cushion block and said mould bases down.
2. processing automobile according to claim 1 is with the cold extrusion die of oil pump shaft; It is characterized in that; The lower surface of said upper cavity die is provided with a groove; The upper surface of die is provided with the boss that a groove with said upper cavity die matees in said; Should in the lower surface of die be provided with a groove with the external appearance matching of said lower cavity die, said middle die and lower cavity die are embedded in respectively in the groove of said upper cavity die and middle die, so that said upper cavity die, middle die and lower cavity die connect into a whole die.
3. processing automobile according to claim 1 is characterized in that with the cold extrusion die of oil pump shaft, and said cold extrusion die comprises that also one is installed in the inner chamber of said top mold frame and is positioned at the upper punch cushion block of the upper end of said upper punch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104468445A CN102513396A (en) | 2011-12-28 | 2011-12-28 | Cold extruding die for processing oil pump shaft of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104468445A CN102513396A (en) | 2011-12-28 | 2011-12-28 | Cold extruding die for processing oil pump shaft of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102513396A true CN102513396A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104468445A Pending CN102513396A (en) | 2011-12-28 | 2011-12-28 | Cold extruding die for processing oil pump shaft of automobile |
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| CN (1) | CN102513396A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480680A (en) * | 2013-08-31 | 2014-01-01 | 安徽新驰机械有限公司 | Cold extruding mold for shaft-type component of automobile transmission |
| CN107243555A (en) * | 2017-07-05 | 2017-10-13 | 苏州市天星山精密模具有限公司 | A kind of high-precision thinner flanging mould |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292831A (en) * | 1979-10-24 | 1981-10-06 | Simon Joseph A | Process for extruding a metal tube with inwardly thickened end portions |
| US20050208166A1 (en) * | 2004-03-19 | 2005-09-22 | Leseman Steven R | Adjustable extrusion die |
| US20060131949A1 (en) * | 2004-10-28 | 2006-06-22 | Mamad Jahani | Tubular articles with varying wall thickness and method of manufacturing same |
| CN201618746U (en) * | 2010-02-11 | 2010-11-03 | 浙江三和机电科技有限公司 | Cold extrusion forming mold of piston pin oil press |
| CN102284541A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion mould for pinion shaft in power-assisted steering device |
| CN102284540A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion forming mould for input shaft in electric power redirector |
| CN202427741U (en) * | 2011-12-28 | 2012-09-12 | 上海久丰汽车零件有限公司 | Cold extruding die for pipe fittings |
-
2011
- 2011-12-28 CN CN2011104468445A patent/CN102513396A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292831A (en) * | 1979-10-24 | 1981-10-06 | Simon Joseph A | Process for extruding a metal tube with inwardly thickened end portions |
| US20050208166A1 (en) * | 2004-03-19 | 2005-09-22 | Leseman Steven R | Adjustable extrusion die |
| US20060131949A1 (en) * | 2004-10-28 | 2006-06-22 | Mamad Jahani | Tubular articles with varying wall thickness and method of manufacturing same |
| CN201618746U (en) * | 2010-02-11 | 2010-11-03 | 浙江三和机电科技有限公司 | Cold extrusion forming mold of piston pin oil press |
| CN102284541A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion mould for pinion shaft in power-assisted steering device |
| CN102284540A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion forming mould for input shaft in electric power redirector |
| CN202427741U (en) * | 2011-12-28 | 2012-09-12 | 上海久丰汽车零件有限公司 | Cold extruding die for pipe fittings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480680A (en) * | 2013-08-31 | 2014-01-01 | 安徽新驰机械有限公司 | Cold extruding mold for shaft-type component of automobile transmission |
| CN107243555A (en) * | 2017-07-05 | 2017-10-13 | 苏州市天星山精密模具有限公司 | A kind of high-precision thinner flanging mould |
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Application publication date: 20120627 |