CN204700076U - A kind of ECAP Die - Google Patents
A kind of ECAP Die Download PDFInfo
- Publication number
- CN204700076U CN204700076U CN201520437104.9U CN201520437104U CN204700076U CN 204700076 U CN204700076 U CN 204700076U CN 201520437104 U CN201520437104 U CN 201520437104U CN 204700076 U CN204700076 U CN 204700076U
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- die
- punch
- ecap
- passage
- discharge arm
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- 238000001125 extrusion Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000003754 machining Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of ECAP Die, comprise upper bolster, guide pin bushing, guide pillar, convex mould pad, alignment pin, punch, punch retainer, front die, rear die, discharge arm, die backing plate, Pre-stress cover and die shoe, upper bolster and die shoe both sides are fixed with the guide pin bushing being built-in with guide pillar respectively, front die and rear die are connected with hexagon socket head cap screw by alignment pin, and the lower end of front die and rear die and die backing plate and die shoe are fixed, front die and rear die outer cover are provided with Pre-stress cover, interference fit between punch and punch retainer; Form vertical squeezing passage and lateral extrusion passage in front die and rear die, discharge arm slides setting in horizontal channel, and punch outer surface offers the groove of lower end closed along punch axis.When the utility model effectively can solve extruding, blank forms the problem that too much overlap causes punch stuck, improves working (machining) efficiency, reduces staff's working strength.
Description
Technical field
The utility model relates to a kind of extrusion die, particularly relates to a kind of ECAP Die.
Background technology
A kind of new technology preparing lumpy nanometer material developed rapidly since Equal Channel Angular Pressing (Equal Channel Angular Pressing) is the eighties in 20th century.Strong detrusion is being there is in material by channel corner place, utilize the method to add feature that man-hour does not change material cross-section shape, carry out repeating processing thus obtaining sizable overall strain amount, make the crystal grain of material obtain refinement and even tissue to improve, thus significantly improve the performances such as the mechanics of material and physics.
ECAP needs to carry out in special mould, and traditional E CAP mould forms primarily of upper bolster, guide pin bushing, guide pillar, convex mould pad, alignment pin, punch, hexagon socket head cap screw, punch retainer, front die, rear die, discharge arm, die backing plate, Pre-stress cover and die shoe.Upper bolster and die shoe both sides are fixed with the guide pin bushing being built-in with guide pillar respectively, front die and rear die are connected with hexagon socket head cap screw by alignment pin, and the lower end of front die and rear die and die backing plate and die shoe are fixed, front die and rear die outer cover are provided with Pre-stress cover, interference fit between punch and punch retainer.Form vertical squeezing passage and lateral extrusion passage in front die and rear die, discharge arm slides setting in horizontal channel.
The following problem that traditional E CAP mould exists:
1. during extruding, blank upwards can flow along clearance between punch and die, forms overlap, when overlap is more, can produce very large frictional force between concave-convex mold, cause that punch is stuck cannot be proposed;
2. vertically squeezing passage does not have material unloading function, and when chance special circumstances, as pressure ram breaks in vertical squeezing passage or when foreign material are stuck in vertical squeezing passage, the pressure ram of fracture or foreign material are difficult to take out, and need mould to dismantle completely;
3. mold heated many employings Muffle furnace, after mould is heated to predetermined temperature in Muffle furnace, taken out from Muffle furnace by mould and be put into forcing press and suppress, in mould transfer and pressing process, can there is certain reduction in temperature, temperature is uncontrollable, and complicated operation has certain risk;
4. the outer chamfering of mould squeezing passage cannot change, and can not study the outer chamfering of different squeezing passage to the impact of material extrusion process in one set of die.
Utility model content
The purpose of this utility model is to provide a kind of ECAP Die, and when effectively can solve extruding, blank forms the problem that too much overlap causes punch stuck, improves working (machining) efficiency, reduces staff's working strength.
The utility model adopts following technical proposals:
A kind of ECAP Die, comprise upper bolster, guide pin bushing, guide pillar, convex mould pad, alignment pin, punch, punch retainer, front die, rear die, discharge arm, die backing plate, Pre-stress cover and die shoe, upper bolster and die shoe both sides are fixed with the guide pin bushing being built-in with guide pillar respectively, front die and rear die are connected with hexagon socket head cap screw by alignment pin, and the lower end of front die and rear die and die backing plate and die shoe are fixed, front die and rear die outer cover are provided with Pre-stress cover, interference fit between punch and punch retainer; Be provided with vertical squeezing passage and lateral extrusion passage in front die and rear die, discharge arm slides setting in lateral extrusion passage, and described punch outer surface axially offers the groove of lower end closed along punch.
Described punch outer surface offers multiple groove, and multiple groove is uniformly distributed at punch outer surface.
Described groove is strip groove, and groove is 0.3mm ~ 0.5mm deeply, flash gutters distance punch lower surface 2 mm ~ 5mm.
Described discharge arm front end face bottom is provided with protuberance, and bottom surface and the lateral extrusion passage of protuberance are slidably connected.
Angle between the front surface of described protuberance and lower surface is 0 ° to 90 °.
Described Pre-stress cover outer surface is arranged with heating plate.
The end of described vertical squeezing passage is provided with plug, and plug coordinates with front die and recurve die clearance; The cross-sectional area of plug is greater than the cross-sectional area of vertical squeezing passage.
Described vertical squeezing passage and the cross section of lateral extrusion passage are square.
Described punch front-end cross-sectional view is square, and discharge arm front end face is square.
Front die above described discharge arm and/or rear die offer thermocouple jack.
The groove of the lower end closed that the utility model utilizes punch outer surface axially to offer along punch, hold the overlap that blank extruding is formed, effectively avoid the phenomenon because overlap during extruding causes punch stuck, drastically increase working (machining) efficiency, reduce staff's working strength.
Further, the utility model is also by arranging protuberance in discharge arm front end face bottom, utilize the angle of different angles between the front surface of protuberance and lower surface, blank bottom is formed to the chamfering of different angles, to carry out the extruding research of the outer chamfering of different passage, without the need to making many molds, save substantial contribution.
Further, the utility model is also provided with plug at the end of vertical squeezing passage, be convenient to vertical squeezing passage discharging, when chance special circumstances, as pressure ram breaks in vertical squeezing passage or when foreign material are stuck in wherein, first lower end cap can be unloaded, afterwards foreign material in vertical squeezing passage are ejected, avoid and mould is all disassembled, significantly reduce the working strength of staff, improve operating efficiency.
Further, the utility model also be arranged with at Pre-stress cover outer surface heating plate to mould carry out entirety heating, overcome existing mould transfer and pressing process in occurrence temperature reduce, the uncontrollable shortcoming of temperature, stop potential safety hazard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is the punch structure schematic diagram of the utility model mould;
Fig. 4 is the structural representation of discharge arm in the utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is done with detailed description:
As shown in Figures 1 to 4, ECAP Die described in the utility model, mainly comprise upper bolster 1, guide pin bushing 2, guide pillar 3, convex mould pad 4, alignment pin 5, punch 6, punch retainer 15, front die 7, rear die 8, discharge arm 12, die backing plate 14, Pre-stress cover 17 and die shoe 20, upper bolster 1 and die shoe 20 both sides are fixed with the guide pin bushing 2 being built-in with guide pillar 3 respectively, form the guide-localization of whole secondary mould.Front die 7 and rear die 8 are connected with hexagon socket head cap screw 10 by alignment pin 5, and the lower end of front die 7 and rear die 8 and die backing plate 14 and die shoe 20 are fixed, front die 7 and rear die 8 outer cover are provided with Pre-stress cover 17, interference fit between punch 6 and punch retainer 15; Be provided with vertical squeezing passage 9 and lateral extrusion passage 18 in front die 7 and rear die 8, discharge arm 12 slides setting in lateral extrusion passage 18.Whole secondary ECAP Die is fixed on forcing press.
Because blank during extruding upwards flows along the gap between punch-die, form overlap, when overlap is more, between concave-convex mold 6, very large frictional force can be produced, cause that punch 6 is stuck cannot be proposed.Therefore, the utility model axially offers the groove 16 of lower end closed along punch 6 at punch 6 outer surface, the overlap that groove 16 is formed for holding blank extruding.In the utility model, punch 6 outer surface offers multiple groove 16, and multiple groove 16 is uniformly distributed at punch 6 outer surface.Groove 16 is strip groove, and groove 16 is 0.3mm ~ 0.5mm deeply, flash gutters distance punch 6 lower surface 2 mm ~ 5mm.
Because the outer chamfering of existing mould squeezing passage cannot change, the outer chamfering of different squeezing passage can not be studied on the impact of material extrusion process in one set of die.Therefore, the utility model is provided with protuberance 21 in discharge arm 12 front end face bottom, and bottom surface and the lateral extrusion passage 18 of protuberance 21 are slidably connected.Angle between the front surface of protuberance 21 and lower surface is 0 ° to 90 °.The utility model is equipped with some discharge arms with different protuberance angle in one set of die, without the need to making many molds, saves substantial contribution.
Due to existing mould in transfer and pressing process can occurrence temperature reduce, the uncontrollable phenomenon of temperature, complicated operation and there is certain risk, therefore the utility model is arranged with heating plate 19 at Pre-stress cover 17 outer surface.Heating plate 19 can adopt high-power heating plate to carry out entirety heating, has the advantage that the efficiency of heating surface is high, easy and safe to operate.Use through reality and show, consuming time 1 hour 30 minutes can by mold heated to 400 DEG C.Front die 7 above discharge arm 12 and/or rear die 8 also offer thermocouple jack 11, is convenient to staff and carries out thermometric.
In existing mould, vertical squeezing passage 9 does not have material unloading function, and when chance special circumstances, as pressure ram breaks in vertical squeezing passage 9 or when foreign material are stuck in vertical squeezing passage 9, the pressure ram of fracture or foreign material are difficult to take out, and need mould to dismantle completely.For above-mentioned drawback, the utility model is provided with plug 13 at the end of vertical squeezing passage 9, is convenient to the discharging of vertical squeezing passage 9, plug 13 and front die 7 and rear die 8 matched in clearance; The cross-sectional area of plug 13 is greater than the cross-sectional area of vertical squeezing passage 9.When chance special circumstances, as pressure ram breaks in vertical squeezing passage 9 or when foreign material are stuck in wherein, can first unload lower end cap 13, afterwards foreign material in vertical squeezing passage 9 are ejected, avoid and mould is all disassembled, significantly reduce the working strength of staff, improve operating efficiency.
In the present embodiment, the cross section of vertical squeezing passage 9 and lateral extrusion passage 18 is square; Adapt, punch 6 front-end cross-sectional view is square, and discharge arm 12 front end face is square.
In use, first utilize the heating plate 19 pairs of moulds covering on Pre-stress cover 17 outside to carry out entirety heating, attemperating unit controls heating process to the utility model.After rising to the temperature of expection, forcing press is risen, punch 6 is separated with vertical squeezing passage 9, afterwards the extrusion billet scribbling lubricant is put into vertical squeezing passage 9, held for some time also, after extrusion billet temperature reaches desired temperature, starts forcing press and extrudes.Lubricant used is Hmp grease.Extrusion billet by after vertical squeezing passage 9 corner, utilizes discharge arm 12 to be ejected completely, and so far, complete a time extruding, whole experimentation is easy, efficient.Subsequently, multi-pass extruding can be carried out to blank.In addition, by selecting the discharge arm 12 with different corner dimension protuberance, the extruding research of the outer chamfering of different passage can be carried out.
Claims (10)
1. an ECAP Die, comprise upper bolster, guide pin bushing, guide pillar, convex mould pad, alignment pin, punch, punch retainer, front die, rear die, discharge arm, die backing plate, Pre-stress cover and die shoe, upper bolster and die shoe both sides are fixed with the guide pin bushing being built-in with guide pillar respectively, front die and rear die are connected with hexagon socket head cap screw by alignment pin, and the lower end of front die and rear die and die backing plate and die shoe are fixed, front die and rear die outer cover are provided with Pre-stress cover, interference fit between punch and punch retainer; Be provided with vertical squeezing passage and lateral extrusion passage in front die and rear die, discharge arm slides setting in lateral extrusion passage, it is characterized in that: described punch outer surface axially offers the groove of lower end closed along punch.
2. ECAP Die according to claim 1, is characterized in that: described punch outer surface offers multiple groove, and multiple groove is uniformly distributed at punch outer surface.
3. ECAP Die according to claim 2, is characterized in that: described groove is strip groove, and groove is 0.3mm ~ 0.5mm deeply, flash gutters distance punch lower surface 2 mm ~ 5mm.
4. ECAP Die according to claim 1, is characterized in that: described discharge arm front end face bottom is provided with protuberance, and bottom surface and the lateral extrusion passage of protuberance are slidably connected.
5. ECAP Die according to claim 4, is characterized in that: the angle between the front surface of described protuberance and lower surface is 0 ° to 90 °.
6. ECAP Die according to claim 1, is characterized in that: described Pre-stress cover outer surface is arranged with heating plate.
7. ECAP Die according to claim 1, is characterized in that: the end of described vertical squeezing passage is provided with plug, and plug coordinates with front die and recurve die clearance; The cross-sectional area of plug is greater than the cross-sectional area of vertical squeezing passage.
8. ECAP Die according to claim 1, is characterized in that: described vertical squeezing passage and the cross section of lateral extrusion passage are square.
9. ECAP Die according to claim 8, is characterized in that: described punch front-end cross-sectional view is square, and discharge arm front end face is square.
10. ECAP Die according to claim 1, is characterized in that: the front die above described discharge arm and/or rear die offer thermocouple jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437104.9U CN204700076U (en) | 2015-06-24 | 2015-06-24 | A kind of ECAP Die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437104.9U CN204700076U (en) | 2015-06-24 | 2015-06-24 | A kind of ECAP Die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204700076U true CN204700076U (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520437104.9U Expired - Fee Related CN204700076U (en) | 2015-06-24 | 2015-06-24 | A kind of ECAP Die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204700076U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812796A (en) * | 2016-09-14 | 2018-03-20 | 西安航空学院 | A kind of automatic discharging ECAP Die |
| CN108704949A (en) * | 2018-05-23 | 2018-10-26 | 贵州大学 | A kind of magnesium alloy channel corner hot-extrusion mold and its heating device |
| CN109261736A (en) * | 2018-09-20 | 2019-01-25 | 贵州大学 | A kind of AZ31 magnesium alloy and preparation method thereof |
| CN110918662A (en) * | 2019-12-12 | 2020-03-27 | 仙居云利电子科技有限公司 | Hexagonal steel bar drawing machine tool |
| WO2021227403A1 (en) * | 2020-05-09 | 2021-11-18 | 深圳技术大学 | Equal channel angular pressing device and equal channel angular pressing temperature control apparatus thereof |
-
2015
- 2015-06-24 CN CN201520437104.9U patent/CN204700076U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812796A (en) * | 2016-09-14 | 2018-03-20 | 西安航空学院 | A kind of automatic discharging ECAP Die |
| CN108704949A (en) * | 2018-05-23 | 2018-10-26 | 贵州大学 | A kind of magnesium alloy channel corner hot-extrusion mold and its heating device |
| CN109261736A (en) * | 2018-09-20 | 2019-01-25 | 贵州大学 | A kind of AZ31 magnesium alloy and preparation method thereof |
| CN110918662A (en) * | 2019-12-12 | 2020-03-27 | 仙居云利电子科技有限公司 | Hexagonal steel bar drawing machine tool |
| CN110918662B (en) * | 2019-12-12 | 2020-10-16 | 日信电气股份有限公司 | Hexagonal steel bar drawing machine tool |
| WO2021227403A1 (en) * | 2020-05-09 | 2021-11-18 | 深圳技术大学 | Equal channel angular pressing device and equal channel angular pressing temperature control apparatus thereof |
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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: 20151014 |