CN102284540A - Cold extrusion forming mould for input shaft in electric power redirector - Google Patents
Cold extrusion forming mould for input shaft in electric power redirector Download PDFInfo
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- CN102284540A CN102284540A CN2010102046355A CN201010204635A CN102284540A CN 102284540 A CN102284540 A CN 102284540A CN 2010102046355 A CN2010102046355 A CN 2010102046355A CN 201010204635 A CN201010204635 A CN 201010204635A CN 102284540 A CN102284540 A CN 102284540A
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- upper punch
- extruding die
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- cushion block
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Abstract
The invention discloses a cold extrusion forming mould for an input shaft in an electric power redirector, which comprises an upper mould rack, a lower mould rack, a mould rack sleeve, an extrusion cavity die and an upper punch. The forming mould further comprises an upper punch fixing ring, an upper punch cushion block, a lower sealed mandril and a lower cushion block; the extrusion cavity die is arranged on the upper middle part of the cavity of the mould rack sleeve; the extrusion cavity die is formed by connecting upper, middle and lower extrusion cavity dies with different extrusion cavities; the upper punch cushion block is arranged on the upper mould rack; the upper punch is fixed on the upper mould rack through the upper punch fixing ring; the lower sealed mandril is disposed on the lower part of the cavity of the mould rack sleeve and located in the cavity of the lower extrusion cavity die; the lower cushion block is arranged on the lower mould rack and padded below the lower end of the lower sealed mandril. The cold extrusion forming mould for the input shaft in the electric power redirector provided by the invention has advantages of reasonable structure, small friction during a cold extrusion process and high precision of formed body billets.
Description
Technical field
The present invention relates to a kind of cold extrusion die, the cold extrusion molding mould of power shaft in particularly a kind of electric booster steering device.
Background technology
Power shaft in the electric booster steering device is parts on the automobile, it is the cylindrical axostylus axostyle 11 that three stage structure (seeing Fig. 1 and Fig. 2) comprises top, place, nearly bottom increases the transition axostylus axostyle 12 of diameter and increases the sleeve with cavity 13 that diameter forms the bottom by a step again in the lower end of this transition axostylus axostyle 12 by a step, the bottom surface of this cavity is provided with a cross flange 131, the chamber wall of sleeve 13 be provided with four from the lower surface of sleeve to 132, four breach of breach 132 of cross flange 31 end faces and cross flange 131 stagger 45 ° and also across.Its processing mode mainly is a cold-extrusion technology.The power shaft cold extrusion blank of the cold-extrusion technology production of prior art will be finished final products and also must promptly pass through four breach of machining respectively on the wall of the chamber of sleeve by the moulding of machining ability only at the cavity floor band cross flange of sleeve.Even the precision of this processing technology cold extrusion blank is higher, owing to pass through machining again, make that the positional precision between four breach and the cross flange is difficult to control, there are mismachining tolerance and accumulated error.Therefore the applicant has developed a kind of new power shaft cold extrusion blank (seeing Fig. 3 and Fig. 4), promptly has cavity and wall thickness H spindle nose 14 greater than finished product sleeve 13 wall thickness in the bottom of power shaft extruding one, the inner chamber bottom surface of spindle nose 14 is provided with cross flange 131, is laid with four pits 140 that degree of depth h is identical with the wall thickness of sleeve 13 on the internal chamber wall of spindle nose 14.The power shaft that obtains finished product only need cut that the part (wall thickness H of spindle nose 14 deducts the degree of depth h of pit 140) greater than sleeve 13 wall thickness can form the finished product power shaft on the spindle nose 14, and obtains four breach 132 on the sleeve 13 naturally.The machining of this periphery will be cut the easy to process of four breach respectively compared to existing technology, and machining accuracy easily controls, thereby can make the power shaft precision behind the finished product higher.For this requirement to mould higher.
Summary of the invention
The objective of the invention is provides the cold extrusion molding mould of power shaft in a kind of electric booster steering device in order to overcome the deficiencies in the prior art, it rational in infrastructure, and frictional force is less in the cold extrusion process, and the precision of molding blank is higher.
The technical scheme that realizes above-mentioned purpose is: the cold extrusion molding mould of power shaft in a kind of electric booster steering device, comprise, following mould bases, the mould bases overcoat, Extruding die and upper punch, described mould also comprises the upper punch retainer plate, the upper punch cushion block, lower seal push rod and lower cushion block, described Extruding die is located at the inner chamber middle and upper part of described mould bases overcoat, it by have different extruding die cavities on, in, following Extruding die connects and composes, described upper punch cushion block is located on the described top mold frame, described upper punch is fixed on the described top mold frame by described upper punch retainer plate, described lower seal push rod is located at the inner chamber bottom of described mould bases overcoat and is arranged in the described die cavity of Extruding die down, and described lower cushion block is located on the described mould bases down and fills up the lower end that is located at described lower seal push rod.
The cold extrusion molding mould of power shaft in the above-mentioned electric booster steering device, wherein, described central authorities of going up the lower surface of Extruding die be provided with one with the groove of middle Extruding die profile coupling, the central authorities of lower surface of Extruding die are provided with a groove that mates with following Extruding die profile in described, in described, down the top of Extruding die is embedded respectively in the groove of last Extruding die and middle Extruding die, so that described upper, middle and lower Extruding die connects into a whole die.
The cold extrusion molding mould of power shaft in the above-mentioned electric booster steering device, wherein, described upper punch is the upper punch that is used for the upper punch of forward extrusion operation or is used for the backward extrusion operation.
The technical scheme of the cold extrusion molding mould of power shaft in the electric booster steering device of the present invention, the frictional resistance of cold steel when die for molding is greatly reduced, for it has created the one-time formed condition of employing cold extrusion, thereby reduce operation, improve work efficiency greatly; Guaranteeing to have improved the dimensionally stable of power shaft cold-extruded part under the prerequisite of mould than the long life, inherent quality obviously improves, the precision height, surface roughness greatly reduces, and has reduced percent defective, improve raw-material utilization rate, reduced processing capacity, reduced the percent defective of following process.
Description of drawings
Fig. 1 is the structure cutaway view of power shaft in the electric booster steering device;
A among Fig. 2 Fig. 1 is to view;
Fig. 3 is the structure cutaway view of the cold-extruded part of power shaft in the electric booster steering device;
B among Fig. 4 Fig. 3 is to view;
Fig. 5 is the structure cutaway view of the cold extrusion molding mould of power shaft in the electric booster steering device of the present invention.
The specific embodiment
In order to understand technical scheme of the present invention better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 5 also in conjunction with consulting Fig. 3 and Fig. 4, the cold extrusion molding mould of power shaft in the electric booster steering device of the present invention, comprise that top mold frame 1, upper punch cushion block 2, upper punch retainer plate 3, upper punch 4, mould bases overcoat 5, Extruding die, lower seal push rod 7, lower cushion block 8 reach mould bases 9 down, wherein
Upper punch cushion block 2 is located on the top mold frame 1;
Extruding die is installed in the inner chamber middle and upper part of mould bases overcoat 5, and it is connected and composed by upper, middle and lower Extruding die 61,62,63, and upper, middle and lower Extruding die 61,62,63 has the extruding die cavity of different structure; The profile of the spindle nose 14 of the cavity shape of last Extruding die 61 and power shaft cold-extruded part is corresponding; The profile of the top cavity shape of middle Extruding die 62 and the transition axostylus axostyle 12 of power shaft cold-extruded part is corresponding, and the profile of bottom cavity shape and axostylus axostyle 11 is corresponding; The profile of the axostylus axostyle 11 of the cavity shape of following Extruding die 63 and power shaft cold-extruded part is corresponding; The central authorities of the lower surface of last Extruding die 61 be provided with one with the groove of middle Extruding die 62 profiles coupling, in the central authorities of lower surface of Extruding die 62 be provided with one with the groove of following Extruding die 63 profiles coupling, in, the top of time Extruding die 62,63 is embedded respectively and makes upper, middle and lower Extruding die 61,62,63 connect into a whole die in the groove of last Extruding die 61 and middle Extruding die 62;
Lower seal push rod 7 is located at the inner chamber bottom of mould bases overcoat 5 and is arranged in the die cavity of Extruding die 63 down;
The cold extrusion molding mould of power shaft only carries out the backward extrusion operation in use in the electric booster steering device of the present invention.Blank 10 is put into the die cavity of upper, middle and lower Extruding die 61,62,63, lower seal push rod 7 is withstood on the lower end of blank 10, lower cushion block 8 is located at the lower end of lower seal push rod 7, and the upper punch 4 of employing backward extrusion operation, spindle nose 14 intracavity diameters of the lower outer diameter of this upper punch 4 and power shaft cold-extruded part are corresponding, and its lower surface central authorities be provided with one with spindle nose 14 inner chambers of power shaft cold-extruded part in cross flange 131 corresponding cross recesses and and pit 140 corresponding cross flanges.Progressively press down along with forcing press drives top mold frame 1, drive upper punch 4 and carry out backward extrusion, and then form the inner-cavity structure of the spindle nose 14 of power shaft cold-extruded part from the upper surface of blank 10.
The cold extrusion molding mould of power shaft has improved the dimensionally stable of power shaft cold-extruded part in the electric booster steering device of the present invention, inherent quality obviously improves, the precision height, surface roughness greatly reduces, reduced percent defective, improve raw-material utilization rate, reduced processing capacity, reduced the percent defective of following process.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the 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. the cold extrusion molding mould of power shaft in the electric booster steering device, comprise, following mould bases, the mould bases overcoat, Extruding die and upper punch, it is characterized in that, described mould also comprises the upper punch retainer plate, the upper punch cushion block, lower seal push rod and lower cushion block, described Extruding die is located at the inner chamber middle and upper part of described mould bases overcoat, it by have different extruding die cavities on, in, following Extruding die connects and composes, described upper punch cushion block is located on the described top mold frame, described upper punch is fixed on the described top mold frame by described upper punch retainer plate, described lower seal push rod is located at the inner chamber bottom of described mould bases overcoat and is arranged in the described die cavity of Extruding die down, and described lower cushion block is located on the described mould bases down and fills up the lower end that is located at described lower seal push rod.
2. the cold extrusion molding mould of power shaft in the electric booster steering device according to claim 1, it is characterized in that, described central authorities of going up the lower surface of Extruding die be provided with one with the groove of middle Extruding die profile coupling, the central authorities of lower surface of Extruding die are provided with a groove that mates with following Extruding die profile in described, in described, down the top of Extruding die is embedded respectively in the groove of last Extruding die and middle Extruding die, so that described upper, middle and lower Extruding die connects into a whole die.
3. the cold extrusion molding mould of power shaft is characterized in that in the electric booster steering device according to claim 1 and 2, and described upper punch is the upper punch that is used for the upper punch of forward extrusion operation or is used for the backward extrusion operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102046355A CN102284540A (en) | 2010-06-18 | 2010-06-18 | Cold extrusion forming mould for input shaft in electric power redirector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102046355A CN102284540A (en) | 2010-06-18 | 2010-06-18 | Cold extrusion forming mould for input shaft in electric power redirector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102284540A true CN102284540A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102046355A Pending CN102284540A (en) | 2010-06-18 | 2010-06-18 | Cold extrusion forming mould for input shaft in electric power redirector |
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| CN (1) | CN102284540A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513396A (en) * | 2011-12-28 | 2012-06-27 | 上海久丰汽车零件有限公司 | Cold extruding die for processing oil pump shaft of automobile |
| CN103240378A (en) * | 2013-05-30 | 2013-08-14 | 上海保捷汽车零部件锻压有限公司 | Cold-forging mechanism for shaft parts of sedan double clutch transmission, and automatic system of cold-forging mechanism |
| CN103611749A (en) * | 2013-12-09 | 2014-03-05 | 无锡透平叶片有限公司 | Sheet stamping extrusion device for die-forging technology |
| CN104174801A (en) * | 2014-08-11 | 2014-12-03 | 贵州航天新力铸锻有限责任公司 | Device for forging nuclear power hydraulic damper cylinder |
| CN105149374A (en) * | 2015-07-21 | 2015-12-16 | 镇江市博驰汽车配件有限公司 | Mould for manufacturing cup-rod type cold extrusion parts |
-
2010
- 2010-06-18 CN CN2010102046355A patent/CN102284540A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513396A (en) * | 2011-12-28 | 2012-06-27 | 上海久丰汽车零件有限公司 | Cold extruding die for processing oil pump shaft of automobile |
| CN103240378A (en) * | 2013-05-30 | 2013-08-14 | 上海保捷汽车零部件锻压有限公司 | Cold-forging mechanism for shaft parts of sedan double clutch transmission, and automatic system of cold-forging mechanism |
| CN103240378B (en) * | 2013-05-30 | 2015-01-07 | 上海保捷汽车零部件锻压有限公司 | Cold-forging mechanism for shaft parts of sedan double clutch transmission, and automatic system of cold-forging mechanism |
| CN103611749A (en) * | 2013-12-09 | 2014-03-05 | 无锡透平叶片有限公司 | Sheet stamping extrusion device for die-forging technology |
| CN103611749B (en) * | 2013-12-09 | 2016-10-05 | 无锡透平叶片有限公司 | The base pressurizing unit of contour forging technique |
| CN104174801A (en) * | 2014-08-11 | 2014-12-03 | 贵州航天新力铸锻有限责任公司 | Device for forging nuclear power hydraulic damper cylinder |
| CN105149374A (en) * | 2015-07-21 | 2015-12-16 | 镇江市博驰汽车配件有限公司 | Mould for manufacturing cup-rod type cold extrusion parts |
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Application publication date: 20111221 |