CN105013851A - External spline shaft cold extrusion mold - Google Patents
External spline shaft cold extrusion mold Download PDFInfo
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- CN105013851A CN105013851A CN201510478650.1A CN201510478650A CN105013851A CN 105013851 A CN105013851 A CN 105013851A CN 201510478650 A CN201510478650 A CN 201510478650A CN 105013851 A CN105013851 A CN 105013851A
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- cavity
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- cold extrusion
- counterdie
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Abstract
The invention discloses an external spline shaft cold extrusion mold which comprises an upper mold, a middle mold and a lower mold which are coaxial. The upper mold is installed on an upper working platform of an oil press. The middle mold and the lower mold are installed on a lower working platform of the oil press. A positioning pin is installed in the middle mold and the lower mold in a penetrating manner. The center of the upper mold is an upper mold cavity. The center of the middle mold is a middle mold cavity. The center of the lower mold is a lower mold cavity. The central points of the upper mold cavity, the middle mold cavity and the lower mold cavity are located on the same central axis. By applying the external spline shaft cold extrusion mold, the problem of material flow uniformity caused by extrusion of a special-shaped irregular spline can be solved.
Description
Technical field
The present invention relates to mould applications, particularly relate 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.
Summary of the invention
The technical problem that the present invention 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 present invention 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 a preferred embodiment of the present invention, 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 a preferred embodiment of the present invention, immediately below described counterdie, ejector beam is installed.
In a preferred embodiment of the present invention, described upper cavity inner top is provided with drift.
In a preferred embodiment of the present invention, the shaft length of the stroke that described patrix extrudes downwards and part matches.
The invention has the beneficial effects as follows: splined shaft cold extrusion die of the present invention, 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 a preferred embodiment of the present invention;
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 invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
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 invention:
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 embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention 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 invention.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478650.1A CN105013851A (en) | 2015-08-03 | 2015-08-03 | External spline shaft cold extrusion mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478650.1A CN105013851A (en) | 2015-08-03 | 2015-08-03 | External spline shaft cold extrusion mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105013851A true CN105013851A (en) | 2015-11-04 |
Family
ID=54404354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510478650.1A Pending CN105013851A (en) | 2015-08-03 | 2015-08-03 | External spline shaft cold extrusion mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105013851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102533A (en) * | 2021-03-05 | 2021-07-13 | 十堰市耀兴工贸股份有限公司 | Cold extrusion die for external spline shaft and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507167A (en) * | 1993-04-27 | 1996-04-16 | Gkn Automotive Ag | Process and device for providing a shaft with splines |
| CN2362606Y (en) * | 1999-03-27 | 2000-02-09 | 滕宏春 | Composite mould for one-step cold-extrusion formation of multi-section spline shouldered shaft |
| CN101081410A (en) * | 2007-07-04 | 2007-12-05 | 陈丽 | 125CC autobicycle gear shifting box technics layshaft multiple spline one-time cold extrusion processing technics |
| CN202238993U (en) * | 2011-09-28 | 2012-05-30 | 重庆秋田齿轮有限责任公司 | Device for machining auxiliary shaft of motorcycle gearbox |
| CN104741403A (en) * | 2015-03-20 | 2015-07-01 | 毛水忠 | Extrusion forming method by use of solid bar and cold extruding device |
| CN204866877U (en) * | 2015-08-03 | 2015-12-16 | 常熟市金华机械股份有限公司 | External splines axle cold extruding die |
-
2015
- 2015-08-03 CN CN201510478650.1A patent/CN105013851A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507167A (en) * | 1993-04-27 | 1996-04-16 | Gkn Automotive Ag | Process and device for providing a shaft with splines |
| CN2362606Y (en) * | 1999-03-27 | 2000-02-09 | 滕宏春 | Composite mould for one-step cold-extrusion formation of multi-section spline shouldered shaft |
| CN101081410A (en) * | 2007-07-04 | 2007-12-05 | 陈丽 | 125CC autobicycle gear shifting box technics layshaft multiple spline one-time cold extrusion processing technics |
| CN202238993U (en) * | 2011-09-28 | 2012-05-30 | 重庆秋田齿轮有限责任公司 | Device for machining auxiliary shaft of motorcycle gearbox |
| CN104741403A (en) * | 2015-03-20 | 2015-07-01 | 毛水忠 | Extrusion forming method by use of solid bar and cold extruding device |
| CN204866877U (en) * | 2015-08-03 | 2015-12-16 | 常熟市金华机械股份有限公司 | External splines axle cold extruding die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102533A (en) * | 2021-03-05 | 2021-07-13 | 十堰市耀兴工贸股份有限公司 | Cold extrusion die for external spline shaft and use method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |