CN107717470A - Compound super abrasive splined shaft extrusion die - Google Patents
Compound super abrasive splined shaft extrusion die Download PDFInfo
- Publication number
- CN107717470A CN107717470A CN201711055571.5A CN201711055571A CN107717470A CN 107717470 A CN107717470 A CN 107717470A CN 201711055571 A CN201711055571 A CN 201711055571A CN 107717470 A CN107717470 A CN 107717470A
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- splined shaft
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- 238000001125 extrusion Methods 0.000 title claims abstract description 28
- 150000001875 compounds Chemical class 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005253 cladding Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Forging (AREA)
Abstract
Compound super abrasive splined shaft extrusion die has a taper body combined die, has " L " type passage inside combined die；Combined die inner passage is provided with access road, deformation passage and exit passageway in order；Outside combined die in embedded V-type prestressing force groove, V-type prestressing force groove plays pressure-bearing and position-limiting action in extrusion process；Outlet channel is connected with multi-functional built-up welding shower nozzle, multi-functional built-up welding shower nozzle is used cooperatively by multi-functional guide pillar and multi-functional guide pin bushing, left and right telescopic moving can be realized, it is connected by pipeline built in multi-functional guide pillar, multi-functional guide pin bushing with plasma powder surfacing machine, realizes that mobile powder feeding built-up welding cools down two kinds of functions with mobile wind feeding；The compound super abrasive splined shaft extrusion die realizes the purpose of " Material cladding, a blowing, deformation are continuous, precision form ", fundamentally overcome the development bottleneck that traditional Equal Channel Angular Pressing is difficult to industrial applications, the product quality and production efficiency of splined shaft greatly improved, the waste of raw material and device resource is effectively reduced, there is the advantages of simple, compound, efficient, easily-controllable.
Description
Technical field
The present invention relates to the extrusion technique field of Metal Forming, especially a kind of extruding metal and surface overlaying one
The compound super abrasive splined shaft extrusion die of shaping.
Background technology
Splined shaft is the common part for being used for transmitting motion and moment of torsion in mechanical system, in aircraft, automobile, tractor, machine
The fields such as bed manufacturing industry, agricultural machinery and engineering machinery are widely used.Splined shaft is multiple tooth work, has bearing capacity high, right
The features such as neutral good, guidance quality is good, stress concentration is small, axle and hub strength reduction are small.The production of conventional spline axle is mainly using rolling
Cut, the cutting working method such as milling and grinding, but these technology categories are various and complex procedures, and production efficiency is low, material wave
Take extremely serious.Further, since metal inside fibre flow is cut off in cutting process, cause splined shaft mechanical property not
Ideal, service life is not high.
In recent years, using it is cold beat, the plastic processing method of the technique as representative such as cold rolling and cold extrusion starts in the big of splined shaft
Large-scale application is obtained in batch production process, significantly improves the production efficiency of product.Produced through plastic processing method
Splined shaft metal streamline it is continuously distributed along parts profile, intensity is higher and plasticity and toughness are good.However, the use due to splined shaft
Operating mode is complicated and changeable, and metal deformation resistance greatly increases under the conditions of cold deformation, the ability of material plasticity deformation and crystal grain thinning
It is extremely limited, cause splined shaft often to occur various forms of failures such as fracture of root and tooth surface abrasion in actual use,
Even cause different degrees of security incident.
Research shows that the severe plastic deformation technology for the purpose of crystal grain thinning can excavate material property to greatest extent and dive
Power, and then realize the optimum control to material structure and performance.Wherein, Equal-channel Angular Pressing is with the fastest developing speed and most
A kind of representational severe plastic deformation method.The process mould is by two " L " types intersecting in uiform section and at a certain angle
Passage forms, and blank is put into from die entrance passage, is extruded after the violent plasticity detrusion in corner from exit passageway, becomes
Any change does not occur for blank section shape and size before and after shape.Therefore, under conditions of the permission of material processing characteristics, repeat
Multi-pass extruding is carried out to blank, until reaching satisfied grain refining effect, and then obtains excellent comprehensive mechanical property.So
And the research about Equal-channel Angular Pressing at present is still in Qualify Phase more, add for the technique in actual machine parts
Application in work production is very rare.Therefore, for the part to be worked under the conditions of complicated even bad working environments, how high efficiency
Ground optimizes design using severe plastic deformation technology to its process, finally realizes engineering goods integral forming and big
Technical scaleization, which is applied, turns into the current key issue for being badly in need of solving.
The content of the invention
To improve existing spline machining production efficiency is low, waste of material is serious, part combination property is bad etc.
Shortcoming, the present invention provide a kind of compound super abrasive splined shaft extrusion die.The compound super abrasive splined shaft extrusion die can be real
The purpose of existing " Material cladding, a blowing, deformation are continuous, precision form ", fundamentally overcomes traditional equal channel angular and squeezes
Pressure technique is difficult to the development bottleneck of industrial applications, and the product quality and production efficiency of splined shaft greatly improved, and effectively reduces
The waste of raw material and device resource, there is the advantage such as simple, compound, efficient, easily-controllable.
The technical solution adopted for the present invention to solve the technical problems is：Compound super abrasive splined shaft extrusion die has one
Taper body combined die, there is " L " type passage inside combined die；Deformation channel interior be sequentially arranged access road,
Deform passage and exit passageway；Access road is smooth circular section, and deformation channel cross-section is splined shaft tooth form, and " L " type passage turns
Angle is 90 °；With coincideing in the V-type prestressing force groove of taper, the side of V-type prestressing force groove adds equipped with plug-in type for combined die insertion
Hot pin, above combined die matching be provided with drift, be embedded at the top of drift in upper mould fixed plate, the top of upper mould fixed plate and
Cope plate is connected, and combined die is fixed in lower template by bed bolt, and lower template is fixed on by T-bolt and pressing plate
On forcing press lower table；Combined die is to divide the left and right fabricated structure of mould vertically, during installation, first by combined die or so
Two parts are combined positioning by alignment pin, and are fastened by cavity plate bolt connection, and joint die cavity forms whole secondary mould inside
Passage, passage top are provided with access road, deformation passage are provided with below access road, and access road section is smooth circular,
Deformation channel cross-section is splined shaft tooth form, and " L " type channel corner is 90 °；The outside of combined die is embedded in V-type prestressing force groove, V
Type prestressing force groove not only plays pressure-bearing and position-limiting action in extrusion process, can also effectively prevent extrded material or mould breakage from flying out
Hurt sb.'s feelings；V-type prestressing force groove is entangled after combined die is integrally formed, and is fixed on by bed bolt in lower template；V-type prestressing force groove
Side plug-in type heating rod is housed, both be in close contact, heat is transmitted in a manner of contact heat transfer, after switching on power, energy
It is enough that whole secondary mould effectively and rapidly heat and be incubated from mold exterior according to material property and technological requirement；Drift is embedding
In upper mould fixed plate, upper mould fixed plate is connected by cope plate with forcing press, and the length of drift be more than charge length but
Less than the length of access road, so advantageously ensure that blank smoothly extrudes；Meanwhile also it can prevent artificial maloperation from making drift pressure
Enter too deep and then damage deformation passage；Outlet channel is connected with multi-functional built-up welding shower nozzle, and multi-functional built-up welding shower nozzle passes through more work(
Energy guide pillar is used cooperatively with multi-functional guide pin bushing, it is possible to achieve left and right telescopic moving, by multi-functional guide pillar, multi-functional guide pin bushing
Put pipeline to be connected with plasma powder surfacing machine, realize that mobile powder feeding built-up welding cools down two kinds of functions with mobile wind feeding；Multi-functional heap
The junction of weldering shower nozzle and exit passageway is placed with cutting machine, and cutting machine carries out any to the splined shaft with super abrasive overlay cladding
The cutting of length.
Compared with prior art, beneficial effects of the present invention are embodied in：
1st, access road, deformation passage and exit passageway are disposed with inside inventive die.Deformation passage can make rod
The gradually transition molding by extrusion of shape blank is the splined shaft with tooth form.In extrusion process, blank is in mold cavity
Deformation is continuous, while two kinds of deformations of the extruding of splined shaft tooth form and Equal-channel Angular Pressing occur.After the completion of extruding, further pass through
Bead-welding technology is handled its surface, to reach the perfect adaptation that material internal activeness and quietness is modified with surface, realizes " material
A compound, blowing, deformation are continuous, precision form " purpose, it is difficult fundamentally to overcome traditional Equal Channel Angular Pressing
With the development bottleneck of industrial applications, the product quality and production efficiency of splined shaft greatly improved, effectively reduce raw material
With the waste of device resource.
2nd, the present invention in die horizontal passage afterbody is provided with multi-functional built-up welding shower nozzle, with plasma powder surfacing machine, more
Function guide pillar and multi-functional guide pin bushing etc. are used cooperatively, can on splined shaft surface continuous, multiple built-up welding ultrawear-resistant material.Meanwhile profit
Material inside organization can be effectively controlled with shower nozzle refrigerating function, and then splined shaft product is obtained optimal combination property.
3rd, the present invention is provided with cutting machine in die horizontal passage afterbody, meets that every technological requirement and performance refer in product
After mark, any cutting can be carried out to the splined shaft exemplar produced, to obtain sample survey or formation of parts.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is compound super abrasive splined shaft extrusion die sectional structure chart.
In figure, 1. forcing press lower tables, 2. lower templates, 3.V type prestressing force grooves, 4. bolts, 5. heating rods, 6. positioning
Pin, 7. drifts, 8. upper mould fixed plates, 9. cope plates, 10. access roades, 11. deformation passages, 12. combined dies, 13. outlets are logical
Road, 14. multi-functional built-up welding shower nozzles, 15. multi-functional guide pillars, 16. powder input ports, 17. multi-functional guide pin bushings, 18. cutting machines, 19. grades from
Sub- pile of grounds welding machine.
Embodiment
The compound super abrasive splined shaft extrusion die, including forcing press lower table 1, lower template 2, V-type prestressing force groove 3,
Bolt 4, heating rod 5, alignment pin 6, drift 7, upper mould fixed plate 8, cope plate 9, access road 10, deformation passage 11, combination are recessed
Mould 12, exit passageway 13, multi-functional built-up welding shower nozzle 14, multi-functional guide pillar 15, powder input port 16, multi-functional guide pin bushing 17, cutting machine 18,
Plasma powder surfacing machine 19；Compound super abrasive splined shaft extrusion die has a taper body combined die 12, combined die 12
There is " L " type passage inside；Channel interior has been sequentially arranged access road 10, deformation passage 11 and exit passageway 13；Enter
Mouth passage 10 is smooth circular section, and deformation channel cross-section is splined shaft tooth form, and " L " type channel corner is 90 °.
The insertion of combined die 12 is with coincideing in the V-type prestressing force groove 3 of taper, and the side of V-type prestressing force groove 3 is equipped with insertion
Formula heating rod 5, matched above combined die 12 and be provided with drift 7, the top of drift 7 is embedded in upper mould fixed plate 8, and upper mould is fixed
The top of plate 8 is connected with cope plate 9, and combined die 12 is fixed in lower template 2 by bed bolt, and lower template 2 is by T-shaped
Bolt and pressing plate are fixed on forcing press lower table 1.
In figure, combined die 12 is to divide the left and right fabricated structure of mould vertically, first that combined die 12 is left during installation
Right two parts are combined positioning by alignment pin 6, and are connected and fastened by cavity plate bolt 4, and joint die cavity forms whole secondary mould
Inner passage, passage top are provided with access road 10, and the lower section of access road 10 is provided with deformation passage 11, the section of access road 10
For smooth circular, deformation passage 11 section is splined shaft tooth form, and " L " type channel corner is 90 °.
In figure, the outside of combined die 12 is embedded in V-type prestressing force groove 3, and V-type prestressing force groove 3 is not only in extrusion process
In play pressure-bearing and position-limiting action, can also effectively prevent extrded material or mould breakage from flying out and hurting sb.'s feelings；V-type prestressing force groove 3 entangles group
After conjunction cavity plate 12 is integrally formed, it is fixed on by bed bolt in lower template 2.
In figure, the side of V-type prestressing force groove 3 is equipped with plug-in type heating rod 5, and both are in close contact, and is passed with contact heat
The mode of leading transmits heat, after switching on power, whole secondary mould can be carried out from mold exterior according to material property and technological requirement
Effectively and rapidly heat and be incubated.
In figure, drift 7 is embedded in upper mould fixed plate 8, and upper mould fixed plate 8 is connected by cope plate 9 with forcing press, and
The length of drift 7 is more than charge length but less than the length of access road 10, so advantageously ensures that blank smoothly extrudes.Together
When, it can also prevent artificial maloperation from drift 7 is pressed into too deep and then damage deformation passage 11.
In figure, multi-functional built-up welding shower nozzle 14 is connected with exit passageway 13, multi-functional built-up welding shower nozzle 14 is by multi-functional
Guide pillar 15 is used cooperatively with multi-functional guide pin bushing 17, it is possible to achieve left and right telescopic moving, by multi-functional guide pillar 15, multi-functional is led
Pipeline built in set 17 is connected with plasma powder surfacing machine 19, realizes that mobile powder feeding built-up welding cools down two kinds of functions with mobile wind feeding.
In figure, the junction of multi-functional built-up welding shower nozzle 14 and exit passageway 13 is placed with cutting machine 18, and cutting machine 18 is right
Splined shaft with super abrasive overlay cladding carries out the cutting of random length.
In use, the heating-up temperature that heating rod 5 is set according to being actually needed, will be bar-shaped after temperature to be heated reaches requirement
Blank is put into access road 10, is pressed down against, and blank is pressed into deformation passage 11, and drift 7 is pressed down against lifting afterwards in place,
Access road 10 is put into next blank, so continues to extrude, and treats that blank reaches multi-functional built-up welding shower nozzle by exit passageway 13
During 14 position, pause extruding；Start plasma powder surfacing machine 19, required according to actual process, adjust extrusion speed and built-up welding
Parameter, continue to extrude, the splined shaft now extruded is welded with super abrasive overlay cladding by surface Jiang Dui after multi-functional built-up welding shower nozzle 14.
According to actual process needs, it is used cooperatively by multi-functional guide pillar 15 and multi-functional guide pin bushing 17 and multi-functional built-up welding shower nozzle 14 can be achieved
Move left and right, in the splined shaft surface overlaying multilayer super abrasive overlay cladding of extrusion；Can be according to bosher after the completion of each built-up welding
Skill requirement, the speed and temperature of cooling wind are set, super abrasive overlay cladding carried out by moving left and right multi-functional built-up welding shower nozzle 14
Various forms of coolings.
Finally, cutting machine 22 is opened, the cutting of random length can be carried out to the splined shaft with super abrasive overlay cladding；Open
Forcing press continues to extrude, and stops extruding and taking away workpiece in time；So continue extruding until terminating；After the completion of extruding, lift
Drift 7, heating rod 5 is taken out, unclamp bed bolt and take lower template 2 away, remove combined die 12, unclamped recessed on combined die 12
Mould bolt 4, while alignment pin 14 is knocked out, combined die 12 is separated, conveniently entirety can take out the deformation blank deformed in passage, and
Cleaning and periodic maintenance in time are carried out to the inner chamber of combined die 12.
Claims (7)
1. compound super abrasive splined shaft extrusion die, including：Forcing press lower table (1), lower template (2), V-type prestressing force groove
(3), bolt (4), heating rod (5), alignment pin (6), drift (7), upper mould fixed plate (8), cope plate (9), access road (10),
Deform passage (11), combined die (12), exit passageway (13), multi-functional built-up welding shower nozzle (14), multi-functional guide pillar (15) plus powder
Mouth (16), multi-functional guide pin bushing (17), cutting machine (18), plasma powder surfacing machine (19)；It is characterized in that：Compound super abrasive spline
Axle extrusion die has a taper body combined die (12), has " L " type passage inside combined die (12)；Channel interior is pressed
It is sequentially with access road (10), deformation passage (11) and exit passageway (13).
2. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：Combined die (13) is embedded in band
Have in the V-type prestressing force groove (3) of identical taper, the side of V-type prestressing force groove (3) is equipped with plug-in type heating rod (5), recessed combining
Matching is provided with drift (7) above mould (13), is embedded at the top of drift (7) in upper mould fixed plate (8), the top of upper mould fixed plate (8)
Portion is connected with cope plate (9), and combined die (12) is fixed in lower template (2) by bed bolt, and lower template (2) passes through T
Type bolt and pressing plate are fixed on forcing press lower table (1).
3. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：Combined die (12) is vertical
Divide the left and right fabricated structure of mould, combined die (12) left and right two parts are combined positioning by alignment pin (6), and pass through cavity plate
Bolt (4) connection fastening, joint die cavity form the inner passage of whole secondary mould.
4. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：Access road (10) section is
Smooth circular, deformation passage (11) section is splined shaft tooth form.
5. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：The outside of combined die (12)
V-type prestressing force groove (3) is embedded in, V-type prestressing force groove (3) not only plays pressure-bearing and position-limiting action in extrusion process, can also be effective
Prevent extrded material or mould breakage from flying out and hurting sb.'s feelings.
6. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：Exit passageway (13) place connects
There is a multi-functional built-up welding shower nozzle (14), multi-functional built-up welding shower nozzle (14) is matched somebody with somebody by multi-functional guide pillar (15) and multi-functional guide pin bushing (17)
Close and use, it is possible to achieve left and right telescopic moving, pass through pipeline and plasma built in multi-functional guide pillar (15), multi-functional guide pin bushing (17)
Pile of grounds welding machine (19) connects, and realizes that mobile powder feeding built-up welding cools down two kinds of functions with mobile wind feeding.
7. compound super abrasive splined shaft extrusion die according to claim 1, it is characterized in that：Multi-functional built-up welding shower nozzle (14)
Cutting machine (18) is placed with the junction of exit passageway (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055571.5A CN107717470A (en) | 2017-10-31 | 2017-10-31 | Compound super abrasive splined shaft extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055571.5A CN107717470A (en) | 2017-10-31 | 2017-10-31 | Compound super abrasive splined shaft extrusion die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107717470A true CN107717470A (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711055571.5A Pending CN107717470A (en) | 2017-10-31 | 2017-10-31 | Compound super abrasive splined shaft extrusion die |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB808047A (en) * | 1955-03-14 | 1959-01-28 | Toro Mfg Corp | A method of and apparatus for producing rotary cutting cylinders |
| CN101539040A (en) * | 2009-04-30 | 2009-09-23 | 上虞市内燃机配件有限公司 | Valve tappet |
| CN202638932U (en) * | 2012-04-27 | 2013-01-02 | 广东科达机电股份有限公司 | Extrusion punch with abrasion resistance and high temperature resistance |
| CN105710151A (en) * | 2016-05-13 | 2016-06-29 | 徐州工程学院 | Compound gear extrusion die |
| CN205551111U (en) * | 2016-04-27 | 2016-09-07 | 徐州工程学院 | When spherical corner inflation extrusion die of passageway |
| CN207681921U (en) * | 2017-10-31 | 2018-08-03 | 徐州工程学院 | Compound super abrasive splined shaft extrusion die |
-
2017
- 2017-10-31 CN CN201711055571.5A patent/CN107717470A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB808047A (en) * | 1955-03-14 | 1959-01-28 | Toro Mfg Corp | A method of and apparatus for producing rotary cutting cylinders |
| CN101539040A (en) * | 2009-04-30 | 2009-09-23 | 上虞市内燃机配件有限公司 | Valve tappet |
| CN202638932U (en) * | 2012-04-27 | 2013-01-02 | 广东科达机电股份有限公司 | Extrusion punch with abrasion resistance and high temperature resistance |
| CN205551111U (en) * | 2016-04-27 | 2016-09-07 | 徐州工程学院 | When spherical corner inflation extrusion die of passageway |
| CN105710151A (en) * | 2016-05-13 | 2016-06-29 | 徐州工程学院 | Compound gear extrusion die |
| CN207681921U (en) * | 2017-10-31 | 2018-08-03 | 徐州工程学院 | Compound super abrasive splined shaft extrusion die |
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