CN202088503U - Cold extruding die for cross shaft - Google Patents
Cold extruding die for cross shaft Download PDFInfo
- Publication number
- CN202088503U CN202088503U CN2011201511877U CN201120151187U CN202088503U CN 202088503 U CN202088503 U CN 202088503U CN 2011201511877 U CN2011201511877 U CN 2011201511877U CN 201120151187 U CN201120151187 U CN 201120151187U CN 202088503 U CN202088503 U CN 202088503U
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- China
- Prior art keywords
- die
- spindle nose
- cavity
- cross shaft
- cavities
- 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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- 238000000641 cold extrusion Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000002994 raw material Substances 0.000 abstract description 6
- 241000282537 Mandrillus sphinx Species 0.000 abstract 1
- 210000001331 nose Anatomy 0.000 description 19
- 238000000465 moulding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 241001133184 Colletotrichum agaves Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000000304 warm extrusion Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a cold extruding die for a cross shaft, which comprises an upper die, a lower die and a positioning pin arranged therebetween. Mandrill cavities are arranged at the upper and lower sides of central cavities of the upper and lower dies. A plurality of radial shaft head cavities are arranged in the periphery of the central cavities and a necking ring is arranged on the radial shaft head cavity close to the central cavity; the cold extruding die for cross shaft is characterized in that the end part of the radial head cavity is provided with a chamfered surface and connected with the necking ring; as a result of the chamfered surface arranged at the end part of the shaft head cavity, the one-time formed cross shaft by cold extrusion does not need to be chamfered, thereby reducing the production steps, improving the work efficiency and saving the raw materials. The cold extruding die for cross shaft has a more reasonable structure and under the condition that the die has longer service life guaranteed, has the advantages of improving the production efficiency and raw material utilization rate and reducing the cost with stable product quality and high precision.
Description
Technical field
The utility model relates to a kind of diel, is specifically related to a kind of structure that is exclusively used in the cross axle cold extrusion molding mould of universal joint.
Background technology
Traditional processing method is a cross axle through behind forge hot or the cold-extrusion shaping, and four spindle noses of product are to finish by the mode that punch press washes upside down angle or Vehicle Processing chamfering.But these two kinds of methods all exist defective separately.The meeting that washes upside down the angle through punch press produces two kinds of common deficiencies.The first, the junction of the chamfering root and the diameter of axle can be protruding, can produce in follow-up mill process and beat, and causes diameter of axle circularity over tolerance, also needs frequent reconditioning emery wheel simultaneously, and production efficiency is low; The second, because the diameter of axle size of the error of frock or product can produce the chamfering non-uniform phenomenon.Also can produce two kinds of common deficiencies through the Vehicle Processing chamfering.The first, the Vehicle Processing product can produce the bad of fineness, and this also is the common fault of machining; The second, also can produce the chamfering non-uniform phenomenon because of the error of frock or the diameter of axle size of product.
The stock utilization that just should be traditional handicraft is low, manufacturing procedure is complicated and the defective of low precision, in order to improve stock utilization, reduce manufacturing procedure, traditional mould is improved, it as the patent No. 89102227.9 Chinese patent " blank of cross axle moulding process and mould ", adopt warm extrusion forming process at first bar to be heated to 500 ℃～1200 ℃, bar after will heating is then put into the hole, material road of the extrusion die that is installed on the forcing press, start forcing press, be contained in extrusion head on the press ram and bar be pressed into moulding in the die cavity of extrusion die.It is to adopt hot extrusion molding, but energy consumption is big, production cost is high and production environment and noise do not meet environmental requirement.The cold extrusion of employing mode production and processing universal-joint cross trunnion is also arranged at present, corresponding mould has also appearred, as the patent No. is the Chinese patent " cross axle cold extrusion die " of 01239582.X, comprise upper die and lower die and the alignment pin of being located at therebetween, it is characterized in that the described upper and lower sides of the central cavity of module up and down is provided with the push rod chamber; Be outside equipped with several radial spindle nose die cavities in central cavity, and the spindle nose die cavity of nearly central cavity side is provided with the necking down ring.This cross axle cold extrusion die has had large increase on stock utilization and production efficiency, and easy to process, but the spindle nose of the cross axle after the moulding also need be through follow-up chamfered ability final molding, so not only waste material but also cumbersome.
Summary of the invention
Technical problem to be solved in the utility model is that the cross axle cold extrusion die that need not chamfered after a kind of rational in infrastructure, moulding is provided at the above-mentioned state of the art.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of cross axle cold extrusion die, comprise mold, bed die and be located at therebetween alignment pin, be provided with the push rod chamber at the upper and lower sides of the central cavity of module up and down, be provided with several radial spindle nose die cavities in the central cavity periphery, and the spindle nose die cavity of nearly central cavity side is provided with the necking down ring, the end that it is characterized in that described spindle nose die cavity is provided with fillet surface, is connected on the necking down ring.
Do not produce boss for solving its chamfering root and diameter of axle junction, the difference that the internal diameter of necking down ring and spindle nose die cavity is set is 0.04～0.06mm.The fillet surface afterbody adopts and does not seal simultaneously, is open type, to guarantee that material has enough mobile distances in mould, prevents product dieback in mould.
As improvement, the angle of described fillet surface and described spindle nose die cavity periphery is＜45 °.
At last, described spindle nose die cavity is four, is the periphery that crosswise is symmetricly set on central cavity.
Compared with prior art, advantage of the present utility model is: the end at the spindle nose die cavity is provided with fillet surface, just need not to carry out again chamfered by the one-time formed cross axle of cold extrusion like this, reduced production process, improved operating efficiency, avoid washing upside down the weak point of angle and Vehicle Processing chamfering, also saved raw material simultaneously.The utility model structure is more reasonable, guaranteeing to have improved utilization rate of raw materials under the prerequisite of mould than the long life, has reduced cost, and has improved production efficiency, constant product quality, precision height.
Description of drawings
Fig. 1 is the structural representation of the mold of the utility model embodiment;
Fig. 2 is the structural representation of the bed die of the utility model embodiment;
Fig. 3 is the vertical view of Fig. 1.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Anticipate as Figure 1-3, a kind of cross axle cold extrusion die, comprise mold A, bed die B and the alignment pin of being located at therebetween, select for use carbide alloy or high speed steel material to make, lower module 1,1 ', last, lower module 1,1 ' center is shaped on central cavity 2, central cavity 2 peripheries are shaped on four and are the symmetrically arranged spindle nose die cavity 3 of crosswise, and the spindle nose die cavity 3 of nearly central cavity side is provided with the necking down ring, and be provided with fillet surface 31 in the end of spindle nose die cavity 3, be connected on the necking down ring 32, do not produce boss for solving its chamfering root and diameter of axle junction, the difference that the internal diameter of necking down ring and spindle nose die cavity is set is 0.04～0.06mm.The fillet surface afterbody adopts and does not seal simultaneously, is open type, to guarantee that material has enough mobile distances in mould, prevents product dieback in mould, and described fillet surface 31 is＜45 ° with the angle of described spindle nose die cavity 3 peripheries; Be provided with pre-tightening sleeve 6 and overcoat 5 in upper and lower module 1,1 ' the outside, on pre-tightening sleeve 6, be provided with dowel hole 8, the inboard of pre-tightening sleeve 6 and the bottom of module are provided with pad 7, and be provided with the push rod chamber of running through 4 in the center of module and pad 7, constitute mold A and the bed die B that is mutually symmetrical substantially thus, and be separately positioned on the bottom plate and portable plate of forcing press.
During production, the round steel that adopts steel plant to produce is a raw material, handle through softening successively after the blanking, the phosphatization lubricated, the blanking pole is being put into push rod chamber 4, along with forcing press drives mold toward pressing down, the blanking pole backs down push rod and counterdie pressing, simultaneously under the cooperation of dowel hole 8 and alignment pin, on being, lower module 1,1 ' closely fastens, and forcing press continues descending, by push rod extruding blanking pole, make it in mould, press to spindle nose die cavity 3 from central cavity 2, and one-shot forming forms fillet surface 31 in the spindle nose end, and the spindle nose of the cross axle after the moulding just need not to carry out chamfered again like this, has reduced production process, improved operating efficiency, also save raw material simultaneously, reduced cost, and pushed the cross axle long service life of coming out, steady quality.
Claims (4)
1. cross axle cold extrusion die, comprise mold, bed die and be located at therebetween alignment pin, be provided with the push rod chamber at the upper and lower sides of the central cavity of module up and down, be provided with several radial spindle nose die cavities in the central cavity periphery, and the spindle nose die cavity of nearly central cavity side is provided with the necking down ring, the end that it is characterized in that described spindle nose die cavity is provided with fillet surface, is connected on the necking down ring.
2. cross axle cold extrusion die according to claim 1, the difference that it is characterized in that the internal diameter of described necking down ring and spindle nose die cavity is 0.04～0.06mm, the fillet surface afterbody is adopted open type simultaneously.
3. cross axle cold extrusion die according to claim 1 is characterized in that the angle of described fillet surface and described spindle nose die cavity periphery is＜45 °.
4. according to claim 1 or 2 or 3 described cross axle cold extrusion dies, it is characterized in that described spindle nose die cavity is four, be the periphery that crosswise is symmetricly set on central cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201511877U CN202088503U (en) | 2011-05-10 | 2011-05-10 | Cold extruding die for cross shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201511877U CN202088503U (en) | 2011-05-10 | 2011-05-10 | Cold extruding die for cross shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202088503U true CN202088503U (en) | 2011-12-28 |
Family
ID=45363592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201511877U Expired - Fee Related CN202088503U (en) | 2011-05-10 | 2011-05-10 | Cold extruding die for cross shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202088503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773299A (en) * | 2011-05-10 | 2012-11-14 | 宁波佳比佳工贸有限公司 | Cross-axle cold extrusion die |
-
2011
- 2011-05-10 CN CN2011201511877U patent/CN202088503U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773299A (en) * | 2011-05-10 | 2012-11-14 | 宁波佳比佳工贸有限公司 | Cross-axle cold extrusion die |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160510 |