CN204866877U - External splines axle cold extruding die - Google Patents

External splines axle cold extruding die Download PDF

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Publication number
CN204866877U
CN204866877U CN201520573448.2U CN201520573448U CN204866877U CN 204866877 U CN204866877 U CN 204866877U CN 201520573448 U CN201520573448 U CN 201520573448U CN 204866877 U CN204866877 U CN 204866877U
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China
Prior art keywords
mould
cavity
counterdie
die cavity
patrix
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Active
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CN201520573448.2U
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Chinese (zh)
Inventor
蒋浩
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Jinhua Changshu City Machinery Inc Co
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Jinhua Changshu City Machinery Inc Co
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Priority to CN201520573448.2U priority Critical patent/CN204866877U/en
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Abstract

The utility model discloses an external splines axle cold extruding die, including coaxial last mould, well mould and lower mould, it installs in the last work platform of hydraulic press to go up the mould, well mould with the lower mould is installed in the lower work platform of hydraulic press, last mould well mould with run through in the lower mould and install the locating pin, it is the die cavity to go up the mould center, well mould center is well die cavity, the lower mould center is die cavity down, last die cavity well die cavity with the central point of die cavity lies in same axis down. The utility model discloses can overcome the mobile inhomogeneous difficult problem of material that the extrusion brought to the irregular spline of dysmorphism.

Description

Male splined shaft cold extrusion die
Technical field
The utility model relates to mould applications, particularly relates to a kind of cold extrusion die.
Background technology
Under the promotion of energy-saving and emission-reduction main trend, original automobile hydraulic steering (3% energy consumption) becomes inexorable trend to electric powered steering (0% energy consumption) development.Electric power steering system of automobile has a core part intermediate steering shaft, and the feature of this part is the two ends of axle is asymmetric spline, process the difficult problem that asymmetric splined shaft is machinery industry, and asymmetric spline is cannot be mach.In prior art after process, needing the part of completion of processing to take out, then put into new blank, consume man-hour during this, efficiency comparison is low, also compares and wastes energy.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of male splined shaft cold extrusion die, can overcome to extrude to the irregular spline of abnormity the material brought and to flow a uneven difficult problem.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
There is provided a kind of male splined shaft cold extrusion die, comprise coaxial patrix, middle mould and counterdie, described patrix is installed on the upper workbench of hydraulic press, and described middle mould and described counterdie are installed on the lower workbench of hydraulic press; Run through in described patrix, described middle mould and described counterdie and alignment pin is installed; Described patrix center is upper cavity, and described Zhong Mo center is middle die cavity, and described counterdie center is lower mode cavity, and the central point of described upper cavity, described middle die cavity and described lower mode cavity is positioned on same axis.
In the utility model preferred embodiment, described upper cavity is gear type inner chamber, and described middle die cavity is round cavity, and described lower mode cavity is irregular shape inner chamber.
In the utility model preferred embodiment, immediately below described counterdie, ejector beam is installed.
In the utility model preferred embodiment, described upper cavity inner top is provided with drift.
In the utility model preferred embodiment, the shaft length of the stroke that described patrix extrudes downwards and part matches.
The beneficial effects of the utility model are: the utility model splined shaft cold extrusion die, include coaxial patrix, middle mould and counterdie, there is different mold cavities respectively, the complex-shaped disposable extrusion process of asymmetric splined shaft can be completed, decrease machine cut number of times, improve the coaxial accuracy of splined shaft, improve the quality of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one preferred embodiment;
Fig. 2 is the top view of patrix in Fig. 1;
Fig. 3 is the top view of middle mould in Fig. 1;
Fig. 4 is the top view of counterdie in Fig. 1;
In accompanying drawing, the mark of each parts is as follows: 1, patrix, and 11, upper cavity, 2, middle mould, 21, middle die cavity, 3, counterdie, 31, lower mode cavity, 4, alignment pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
A kind of male splined shaft cold extrusion die, comprise coaxial patrix 1, middle mould 2 and counterdie 3, described patrix 1 is installed on the upper workbench of hydraulic press, and described middle mould 2 and described counterdie 3 are installed on the lower workbench of hydraulic press; Run through in described patrix 1, described middle mould 2 and described counterdie 3 and alignment pin 4 is installed; Described patrix 1 center is upper cavity 11, and described middle mould 2 center is middle die cavity 21, and described counterdie 3 center is lower mode cavity 31, and the central point of described upper cavity 11, described middle die cavity 21 and described lower mode cavity 31 is positioned on same axis.Described upper cavity 11 is gear type inner chamber, and described middle die cavity 21 is round cavity, and described lower mode cavity 31 is irregular shape inner chamber, and described upper cavity 11 inner top is provided with drift.
Immediately below described counterdie 3, ejector beam is installed.
The described patrix 1 downwards stroke of extruding and the shaft length of part matches.
The course of work of the present utility model:
Blank part is put into mould 2 die cavity 21, the upper workbench of hydraulic press drives patrix 1 pair of blank part to extrude downwards, until withstand the drift in upper cavity 11, plastic deformation is there is in blank part in upper cavity 11, middle die cavity 21 and lower mode cavity 31, disposable extruding obtains asymmetric splined shaft thus, and the coaxial accuracy of this asymmetric splined shaft is higher.Splined shaft is upwards ejected middle mould 2 and counterdie 3 by the ejector beam then immediately below counterdie 3, takes out with handled easily work.
Be understandable that, the shape of upper cavity 11, middle die cavity 21 and lower mode cavity 31 customized according to the size of required product, but the diameter of middle die cavity 21 is greater than upper cavity 11 and lower mode cavity 31, ensures that blank part can the product plastic deformation when extruding smoothly.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (5)

1. a male splined shaft cold extrusion die, is characterized in that, comprises coaxial patrix, middle mould and counterdie, and described patrix is installed on the upper workbench of hydraulic press, and described middle mould and described counterdie are installed on the lower workbench of hydraulic press; Run through in described patrix, described middle mould and described counterdie and alignment pin is installed; Described patrix center is upper cavity, and described Zhong Mo center is middle die cavity, and described counterdie center is lower mode cavity, and the central point of described upper cavity, described middle die cavity and described lower mode cavity is positioned on same axis.
2. male splined shaft cold extrusion die according to claim 1, is characterized in that, described upper cavity is gear type inner chamber, and described middle die cavity is round cavity, and described lower mode cavity is irregular shape inner chamber.
3. male splined shaft cold extrusion die according to claim 1, is characterized in that, immediately below described counterdie, be provided with ejector beam.
4. male splined shaft cold extrusion die according to claim 1, is characterized in that, described upper cavity inner top is provided with drift.
5. male splined shaft cold extrusion die according to claim 1, is characterized in that, the shaft length of the stroke that described patrix extrudes downwards and part matches.
CN201520573448.2U 2015-08-03 2015-08-03 External splines axle cold extruding die Active CN204866877U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520573448.2U CN204866877U (en) 2015-08-03 2015-08-03 External splines axle cold extruding die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520573448.2U CN204866877U (en) 2015-08-03 2015-08-03 External splines axle cold extruding die

Publications (1)

Publication Number Publication Date
CN204866877U true CN204866877U (en) 2015-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520573448.2U Active CN204866877U (en) 2015-08-03 2015-08-03 External splines axle cold extruding die

Country Status (1)

Country Link
CN (1) CN204866877U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013851A (en) * 2015-08-03 2015-11-04 常熟市金华机械股份有限公司 External spline shaft cold extrusion mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013851A (en) * 2015-08-03 2015-11-04 常熟市金华机械股份有限公司 External spline shaft cold extrusion mold

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