CN203764671U - Semi-closed axial extrusion die for spline shaft - Google Patents
Semi-closed axial extrusion die for spline shaft Download PDFInfo
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- CN203764671U CN203764671U CN201420178054.2U CN201420178054U CN203764671U CN 203764671 U CN203764671 U CN 203764671U CN 201420178054 U CN201420178054 U CN 201420178054U CN 203764671 U CN203764671 U CN 203764671U
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- die
- punch
- fixed cover
- closed axial
- lower bolster
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Abstract
The utility model discloses a semi-closed axial extrusion die for a spline shaft. A long part of the lower end of a blank is arranged in a female die cavity, the frictional force of a die cavity wall on the blank during extrusion is reduced to a certain extent, and the deformation is slight. The semi-closed axial extrusion die comprises a die carrier, a male die, a female die and an ejection mechanism, wherein the die carrier comprises an upper template, a lower template and guide pillars; an upper fixing plate and a male die sleeve are arranged below the upper template; a male die fixing sleeve is arranged in the male die sleeve; the male die is arranged in the male die fixing sleeve; a lower fixing plate and a female die sleeve are arranged above the lower template; a female die fixing sleeve is arranged in the female die sleeve; the female die is arranged in the female die fixing sleeve; the upper ends of the guide pillars are sleeved in guide sleeves; the guide pillars can slide up and down along the guide sleeves; the ejection mechanism is fixed below the lower template, and is connected with one end of an ejector rod; the other end of the ejector rod penetrates through the lower template, and is connected with the female die.
Description
Technical field
The utility model relates to a kind of metallic extrusion molding mould, is specifically related to the half-closed axial compression mould of a kind of splined shaft.
Background technology
The traditional diamond-making technique of spline is to use form milling and generate milling, and cutter is easy to wear, and cost is higher; Spline side easily produces ripple, rough surface; Symmetry is poor, and decile is inaccurate; Circular pitch error, profile error and tooth alignment error are all easily overproof.
The seventies in last century, professor Marciniak of Warsaw, POL Polytechnics has founded WPM method, by two eccentric shafts, makes to circle as a pair of fan-shaped roller with internal tooth of forming tool, and blank external tooth is processed.The spline milling train that Germany Grob company produces is by blank feeding vertically, in process, by calibration revolution, realizes whole tooth Profile Machining.
Adopt spline rolling mill practice to produce spline, efficiency is very high.But spline milling train price is high, Mould Machining manufacture and debugging are complicated, just economical in the situation that producing in enormous quantities very much.
Japan starts successful Application Open-die Cold Extrusion technology the seventies and produces splined driveshaft.The mid-80, the research motorcycle spline cold-extrusion shaping success of Chongqing weapon industry 59 research institute also starts to produce, and the motorcycle industry application of existing Chongqing region becomes basically universal.University Of Chongqing, Chongqing University of Technology, Industrial and Commercial University Of Chongqing have people to study spline cold-extrusion shaping technology.
Patent that the nineteen ninety application of FAW group corporation technical study institute " is just being squeezed spline research ".Nanjing Automobile group manufactures pickup truck power transmission shaft involute spline and rectangular spline with cold extruding technique the nineties.Jiangsu large Feng Senwei group and Suzhou, Changshu have factory's extruding to produce motorcycle splined shaft; 2003, Jiangsu Jingjiang Singleton Shaft Co., Ltd published the news on the net, said that they adopt cold-extrusion technology to produce spline, compare with conventional art, properties of product have improved Three Estate precision, and raw material save 10%, production efficiency improves more than 30 times, but has no other report.
Reportedly power transmission shaft factory in Beijing has also produced automobile spline, but profile of tooth filling is unstable.
Jilin University bears calendar year 2001 Science and Technology Department of Jilin Province project " power transmission shaft involute spline cold-extrusion shaping ", the Master's thesis of this school Bai Fengmei in 2006 is: " cold Extrusion Process for Involute Spline Part based on numerical simulation and optimum design of die ", the Master's thesis of Zhang Peng in 2007 is: " cold extrusion numerical simulation study and the Design of Dies of automobile axle shaft spline ".
The Master's thesis of the postgraduate He Guanghui in 2004 of Southeast China University is " optimal design of the research of rectangular spline cold-extrusion technology and combined die ", and the Master's thesis of another postgraduate's slow wave in 2006 is " research of large modulus spline teeth cold-extrusion shaping ".
2003 to 2009, the refined virtue of the Wu of Changchun University of Science and Technology is all at the extrusion molding of research spline, he with two postgraduates' Master's thesis be respectively " research of minicar Formation of Axle Shaft Spline cold extrusion technology " and " research of involute cylindrical gear spline cold-extrusion technology ".
2011, the paper of the Cai Anjiang of Xi'an University of Architecture and Technology professor's postgraduate Zheng Kun was " cold-extruded spline technology and equipment research and development thereof ".
The axial cold extrusion method of spline has Closed Extrusion and open type to push two kinds.The former is out of shape at whole workpiece, under the effect that blank metal carries outside, along die cavity, flow downward, because die cavity wall is very large to the frictional force of blank, so deformation force is large, needed equipment tonnage is large, and the loaded condition of mould is severe, life-span is low, the profile of tooth of spline is also difficult for being full of, and has increased the height of die, has increased production cost.The latter's extrusion billet just produces local deformation in end, deformation force can not be too large, as too large in deformation force, and the ratio of height to diameter of blank is when larger, may make blank bending-buckling, or at die entrance position, gathering stock occur.And deformation force is too little, the profile of tooth filling of spline is not full, and quality is unstable, has a strong impact on product quality.
So-called Closed Extrusion is rarely found, because as very long in product, can not be put in mould completely.
Utility model content
In order to overcome the deficiency of above technology, the utility model provides a kind of splined shaft half-closed axial compression mould, and blank lower end is long in matrix cavity, and during extruding, die cavity wall reduces to some extent to the frictional force of blank, is out of shape little.
The utility model is by the following technical solutions:
The half-closed axial compression mould of splined shaft, comprises mould bases, punch, die and ejecting mechanism, and mould bases comprises cope match-plate pattern, lower bolster and the guide pillar between cope match-plate pattern and lower bolster; Cope match-plate pattern below is provided with upper mounted plate and punch case, is provided with punch fixed cover in punch case, and punch is arranged in punch fixed cover; Lower bolster top is provided with bottom plate and die case, is provided with die fixed cover in die case, and die is arranged in die fixed cover; The upper end of guide pillar is set in guide pin bushing, and guide pillar can slide up and down along guide pin bushing; Ejecting mechanism is fixed on lower bolster below, and ejecting mechanism connects a push rod one end, and the push rod other end is connected with die through lower bolster.
The half-closed axial compression mould of above-mentioned splined shaft, is provided with convex mould pad between punch fixed cover and cope match-plate pattern.
The half-closed axial compression mould of above-mentioned splined shaft, is provided with die backing plate between die fixed cover and lower bolster.
The half-closed axial compression mould of above-mentioned splined shaft, in die case, die fixed cover top is provided with locating piece.
The half-closed axial compression mould of above-mentioned splined shaft, also includes the die shank being arranged on cope match-plate pattern.
The beneficial effects of the utility model:
Blank lower end is long in matrix cavity, and during extruding, die cavity wall reduces to some extent to the frictional force of blank, is out of shape little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the selected embodiment of the utility model.
In figure 1, ejecting mechanism, 2, push rod, 3, lower bolster, 4, bottom plate, 5, die case, 6, guide pillar, 7, guide pin bushing, 8, upper mounted plate, 9, cope match-plate pattern, 10, die shank, 11, convex mould pad, 12, punch case, 13, punch fixed cover, 14, punch, 15, locating piece, 16, die fixed cover, 17, die, 18, die backing plate.
The specific embodiment
For the ease of those skilled in the art, better understand the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further details, following is only the exemplary protection domain of the present utility model that do not limit.
With reference to accompanying drawing 1, the half-closed axial compression mould of a kind of splined shaft, comprises mould bases, punch 14, die 17 and ejecting mechanism 1, and mould bases comprises cope match-plate pattern 9, lower bolster 3 and the guide pillar 6 between cope match-plate pattern 9 and lower bolster 3; Cope match-plate pattern 9 belows are provided with upper mounted plate 8 and punch case 12, are provided with punch fixed cover 13 in punch case 12, and punch 14 is arranged in punch fixed cover 13; Lower bolster 3 tops are provided with bottom plate 4 and die case 5, are provided with die fixed cover 16 in die case 5, and die 17 is arranged in die fixed cover 16; The upper end of guide pillar 6 is set in guide pin bushing 7, and guide pillar 6 can slide up and down along guide pin bushing 7; Ejecting mechanism 1 is fixed on lower bolster 3 belows, and ejecting mechanism 1 connects push rod 2 one end, and push rod 2 other ends are connected with die 17 through lower bolster 3.
In the present embodiment, between punch fixed cover 13 and cope match-plate pattern 9, be provided with convex mould pad 11; Between die fixed cover 16 and lower bolster 3, be provided with die backing plate 18, play corrective action.
In the present embodiment, the interior die fixed cover of die case 5 16 tops are provided with locating piece 15.
In the present embodiment, also include the die shank 10 being arranged on cope match-plate pattern 9.
The course of work of the present utility model is as follows: forcing press stresses on blank pressing down process convex mould 14, and the long part in blank lower end can be placed in die 17, and punch 14 moves downward, and completes the extrusion modling of spline, ejecting mechanism 1 compressive deformation; When forcing press backhaul, the ejecting mechanism 1 of compressive deformation will recover, and discharges and upwards pressure to kicker, and splined shaft is ejected in die, is convenient to pickup.
Below only described basic principle of the present utility model and preferred embodiment, those skilled in the art can make many changes and improvements according to foregoing description, and these changes and improvements should belong to protection domain of the present utility model.
Claims (5)
1. the half-closed axial compression mould of splined shaft, comprise mould bases, punch (14), die (17) and ejecting mechanism (1), it is characterized in that: mould bases comprise cope match-plate pattern (9), lower bolster (3) and be positioned at cope match-plate pattern (9) and lower bolster (3) between guide pillar (6); Cope match-plate pattern (9) below is provided with upper mounted plate (8) and punch case (12), is provided with punch fixed cover (13) in punch case (12), and punch (14) is arranged in punch fixed cover (13); Lower bolster (3) top is provided with bottom plate (4) and die case (5), is provided with die fixed cover (16) in die case (5), and die (17) is arranged in die fixed cover (16); The upper end of guide pillar (6) is set in guide pin bushing (7), and guide pillar (6) can slide up and down along guide pin bushing (7); Ejecting mechanism (1) is fixed on lower bolster (3) below, and ejecting mechanism (1) connects a push rod (2) one end, and push rod (2) other end is connected with die (17) through lower bolster (3).
2. the half-closed axial compression mould of splined shaft according to claim 1, is characterized in that: between punch fixed cover (13) and cope match-plate pattern (9), be provided with convex mould pad (11).
3. the half-closed axial compression mould of splined shaft according to claim 1, is characterized in that: between die fixed cover (16) and lower bolster (3), be provided with die backing plate (18).
4. the half-closed axial compression mould of splined shaft according to claim 1, is characterized in that: the interior die fixed cover of die case (5) (16) top is provided with locating piece (15).
5. according to the half-closed axial compression mould of splined shaft described in claim 1 to 4 any one, it is characterized in that: it also includes the die shank (10) being arranged on cope match-plate pattern (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178054.2U CN203764671U (en) | 2014-04-14 | 2014-04-14 | Semi-closed axial extrusion die for spline shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178054.2U CN203764671U (en) | 2014-04-14 | 2014-04-14 | Semi-closed axial extrusion die for spline shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203764671U true CN203764671U (en) | 2014-08-13 |
Family
ID=51281918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420178054.2U Expired - Fee Related CN203764671U (en) | 2014-04-14 | 2014-04-14 | Semi-closed axial extrusion die for spline shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203764671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226708A (en) * | 2014-09-12 | 2014-12-24 | 诸文伟 | Spline cold extruding mold |
| CN105013847A (en) * | 2015-08-03 | 2015-11-04 | 常熟市金华机械股份有限公司 | Cold extruding device for asymmetric spline shaft |
-
2014
- 2014-04-14 CN CN201420178054.2U patent/CN203764671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226708A (en) * | 2014-09-12 | 2014-12-24 | 诸文伟 | Spline cold extruding mold |
| CN105013847A (en) * | 2015-08-03 | 2015-11-04 | 常熟市金华机械股份有限公司 | Cold extruding device for asymmetric spline shaft |
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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 |
Granted publication date: 20140813 Termination date: 20150414 |
|
| EXPY | Termination of patent right or utility model |