CN113967669B - Automatic slow-release lubrication magnesium alloy bar forward extrusion die - Google Patents
Automatic slow-release lubrication magnesium alloy bar forward extrusion die Download PDFInfo
- Publication number
- CN113967669B CN113967669B CN202111499951.4A CN202111499951A CN113967669B CN 113967669 B CN113967669 B CN 113967669B CN 202111499951 A CN202111499951 A CN 202111499951A CN 113967669 B CN113967669 B CN 113967669B
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- Prior art keywords
- extrusion
- die
- roller
- extrusion ring
- conical
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- 238000001125 extrusion Methods 0.000 title claims abstract description 158
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 17
- 238000005461 lubrication Methods 0.000 title claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 6
- 238000005267 amalgamation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
-
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses an automatic slow-release lubrication magnesium alloy bar forward extrusion die which comprises a male die arranged on an upper die holder of a press and a female die assembly arranged on a lower die holder of the press, wherein the female die assembly comprises a female die main body and an extrusion ring assembly, an extrusion channel is vertically formed below the male die by the female die main body, a billet inlet is formed at the upper end of the extrusion channel, a billet outlet is formed at the lower end of the extrusion channel, a billet accommodating cavity is formed by downwards extending of the extrusion channel from the billet inlet, the extrusion ring assembly is arranged on the female die main body, the extrusion ring assembly comprises an extrusion ring and a roller, the roller is arranged in the extrusion ring in a rolling manner, a conical extrusion surface tangent to the surface of the roller is formed by downwards and inwards retracting the extrusion ring from the billet accommodating cavity, the lower end of the conical extrusion surface is communicated with the billet outlet, the roller exposes the conical extrusion surface, and a lubricant channel for supplying oil to the surface of the roller is formed inside the extrusion ring. The invention reduces the friction force between the blank and the die in the forward extrusion process of the magnesium alloy bar, and ensures that the metal flow is more uniform.
Description
Technical Field
The invention relates to the technical field of extrusion dies, in particular to an automatic slow-release lubrication magnesium alloy bar forward extrusion die.
Background
The magnesium alloy is an alloy formed by adding other elements based on magnesium, has the advantages of small density, high strength, good heat dissipation, good shock absorption, good corrosion resistance to organic matters and alkaline matters, and the like, and is widely applied to the technical fields of aviation, aerospace and the like.
The extrusion processing can improve the deformability of metal, has the characteristics of high comprehensive quality of products, wide product range, raw material saving, short process flow and the like, and is widely applied to the plastic processing field of metal materials.
The extrusion processing is a plastic processing method which applies external force to a metal blank placed in a container (an extrusion cylinder and a female die) through a male die to enable the metal blank to flow out of a specific die hole, so that the plastic processing method can be generally divided into forward extrusion, backward extrusion, compound extrusion and the like, the metal flow direction in the forward extrusion process is the same as the moving direction of the male die, the metal flow is uneven due to the fact that the friction force between the metal blank and the extrusion cylinder is generally large, the center layer flows fast, the outer layer flows slowly, the deformation of a workpiece after extrusion molding is uneven, tail shrinkage is formed, and the equipment is required to bear large friction force in the working process, so that the equipment requirement is high, and the application universality of the extrusion process is restricted.
Disclosure of Invention
The invention aims to provide an automatic slow-release lubrication magnesium alloy bar forward extrusion die, which overcomes the defects and reduces the friction between a blank and the die in the magnesium alloy bar forward extrusion process.
To achieve the above object, the solution of the present invention is: the utility model provides an automatic slow-release lubricated magnesium alloy rod forward extrusion die, includes the terrace die of installing at the press upper die base, installs the die subassembly at the press die holder, the die subassembly includes die main part, extrusion ring subassembly, the die main part is in the vertical extrusion passageway that is formed with in terrace die below, open the extrusion passageway upper end has blank entry, open the lower extreme has blank export, the extrusion passageway by blank entry downwardly extending is formed with blank appearance chamber, extrusion ring subassembly installs on the die main part, extrusion ring subassembly includes extrusion ring, gyro wheel, the gyro wheel roll is installed in the extrusion ring, the extrusion ring by blank appearance chamber downwardly adduction have with the tangent toper extrusion face of gyro wheel surface, toper extrusion face lower extreme intercommunication the blank export, the gyro wheel exposes the toper extrusion face, the inside lubricant passageway of supplying oil to the gyro wheel surface has been seted up of extrusion ring.
Further, a roller exposing port is formed in the middle of the conical extrusion surface, and the roller is exposed out of the conical extrusion surface through the roller exposing port.
Further, the die body comprises an upper die and a lower die which are spliced up and down, the blank accommodating cavity is formed in the upper die, an extrusion ring assembly mounting cavity is formed at the splicing position of the upper die and the lower die, and the extrusion ring assembly is detachably mounted in the extrusion ring assembly mounting cavity.
Further, the extrusion ring comprises an extrusion ring main body and a detachable block body, wherein the extrusion ring main body forms the conical extrusion surface, the roller is arranged on the detachable block body, and the detachable block body is detachably embedded into the extrusion ring main body.
Further, a detachable block mounting cavity extends from the outer wall of the extrusion ring body to the conical extrusion surface, and the detachable block is embedded into the extrusion ring body through the detachable block mounting cavity.
Further, a lubricant groove for conducting a lubricant channel is formed between the detachable block body and the roller, a cleaning groove for conducting the lubricant groove to the outer side of the extrusion ring assembly is formed below the detachable block body, and a cleaning groove block body is detachably plugged in the cleaning groove.
Further, the blank accommodating cavity is cylindrical, and the conical extrusion surface is a conical surface.
Further, the extrusion ring is uniformly distributed with a plurality of rollers along the circumference of the conical extrusion surface.
Further, the roller side walls are arcuately concave to form line contact with the billet as it flows along the tapered extrusion face.
After the scheme is adopted, the beneficial effects of the invention are as follows: the extrusion channel is formed by downwards extending the blank inlet to form a blank accommodating cavity, the extrusion ring assembly is arranged on the die main body, the extrusion ring assembly comprises an extrusion ring and a roller, the roller is arranged in the extrusion ring in a rolling manner, the extrusion ring is internally retracted downwards from the blank accommodating cavity to form a conical extrusion surface tangential to the surface of the roller, the lower end of the conical extrusion surface is communicated with the blank outlet, the roller is exposed out of the conical extrusion surface, a lubricant channel for supplying oil to the surface of the roller is formed in the extrusion ring, and then during extrusion processing, the punch pushes the blank in the blank accommodating cavity to downwards retract along the conical extrusion surface, and when the blank flows to the roller, the roller is driven to rotate, the lubricant channel supplies the lubricant to the surface of the roller, and the roller carries the lubricant to be smeared on the surface of the blank, so that friction between the blank and the conical extrusion surface is reduced, and metal flows more uniformly;
The conical extrusion surface is tangential to the surface of the roller, so that the blank can be contacted with the roller to drive the roller to rotate, and the roller is prevented from being damaged due to overlarge radial force of the blank on the roller.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic cross-sectional view of an extrusion ring assembly according to the present invention.
Description of the reference numerals: 1-male die, 2-female die assembly, 3-female die body, 4-extrusion ring assembly, 5-extrusion channel, 6-billet inlet, 7-billet outlet, 8-billet holding cavity, 9-extrusion ring, 10-roller, 11-conical extrusion face, 12-lubricant channel, 13-roller exposure outlet, 14-upper female die, 15-lower female die, 16-extrusion ring assembly mounting cavity, 17-extrusion ring body, 18-removable block, 19-removable block mounting cavity, 20-lubricant groove, 21-cleaning groove, 22-cleaning groove block, 23-billet.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides an automatic slow-release lubrication magnesium alloy bar forward extrusion die, as shown in figures 1-3, which is mainly combined with figure 1, and comprises a male die 1 arranged on an upper die holder of a press machine, a female die component 2 arranged on a lower die holder of the press machine, wherein the press machine drives the upper die holder of the press machine to open and close with the lower die holder of the press machine, which is not shown in the drawing, the male die 1 is fixed with the upper die holder of the press machine, the female die component 2 is fixed with the lower die holder of the press machine, the fixing mode can be any one of the existing fixing modes of a die and a die holder, the female die component 2 comprises a female die main body 3 and an extrusion ring component 4, an extrusion channel 5 is vertically formed below the male die 1 by the female die main body 3, the upper end of the extrusion channel 5 is provided with a billet inlet 6, the lower end of the extrusion channel 5 is provided with a billet outlet 7, the extrusion channel 5 is formed with a billet accommodating cavity 8 by downwards extending from the billet inlet 6, a billet 23 is placed into the billet accommodating cavity 8 along the billet inlet 6 before processing, the extrusion ring assembly 4 is arranged on the die main body 3, the extrusion ring assembly 4 comprises an extrusion ring 9 and a roller 10, the roller 10 is arranged in the extrusion ring 9 in a rolling way, the important point is that a conical extrusion surface 11 tangent to the surface of the roller 10 is formed by downwards adducting the extrusion ring 9 from the billet accommodating cavity 8, the lower end of the conical extrusion surface 11 is communicated with the billet outlet 7, the middle part of the conical extrusion surface 11 is provided with a roller exposing opening 13, the roller 10 exposes the conical extrusion surface 11 from the roller exposing opening 13, so that the problem that the roller 10 is damaged due to overlarge exposed area of the roller 10 and the blank 23 deforms along the surface of the roller 10 when being extruded, the radial force of the blank 23 acting on the roller 10 is overlarge, the inside of the extrusion ring 9 is provided with a lubricant channel 12 for supplying oil to the surface of the roller 10, one end of the lubricant channel 12 is communicated with the surface of the roller 10, the other end is communicated with a lubricant supply mechanism, the lubricant supply mechanism can be any device for supplying lubricant in the prior art, such as an oil pump, without being particularly limited, in the processing process, the upper die holder of the press drives the male die 1 to extend downwards into the blank accommodating cavity 8, then the blank 23 in the blank accommodating cavity 8 is extruded to flow downwards along the conical extrusion surface 11, then the roller 10 is driven to roll when flowing to the roller 10, the lubricant channel 12 continuously provides lubricant for the surface of the roller 10, the lubricant is smeared on the surface of the blank 23 in the rolling process of the roller 10, friction generated between the blank 23 and the female die assembly 2 in the extrusion process is reduced, and because the roller 10 is arranged at the conical extrusion surface 11, the conical extrusion surface 11 acts on the blank 23 to deform the blank 23, so that the blank 23 is tightly attached to the conical extrusion surface 11, namely, the blank 23 can be tightly attached to the roller 10, the roller 10 can be driven to roll in the downward flowing process of the blank 23, and even smearing of lubricant is realized, in the embodiment, the blank accommodating cavity 8 is cylindrical, the conical extrusion surface 11 is a conical surface, the extrusion ring 9 is uniformly distributed with a plurality of rollers 10 along the circumference of the conical extrusion surface 11, six rollers are arranged in total in the embodiment, the side walls of the rollers 10 are concavely curved to form line contact with the blank 23 when the blank 23 flows along the conical extrusion surface 11, further, the area of applying the lubricant to the preform 23 can be increased.
For be convenient for dismouting change extrusion ring assembly 4 after wearing and tearing, die body 3 includes upper die 14, the lower die 15 of upper and lower amalgamation, blank appearance chamber 8 set up in upper die 14, upper die 14 with lower die 15 amalgamation department is formed with extrusion ring assembly installation cavity 16, extrusion ring assembly 4 detachably installs in the extrusion ring assembly installation cavity 16, in this embodiment, extrusion ring assembly 4 form with extrusion ring assembly installation cavity 16 the same profile, extrusion ring assembly 4 falls in extrusion ring assembly installation cavity 16. For easy replacement and maintenance of the roller 10, the extruding ring 9 includes an extruding ring main body 17 and a detachable block 18, the extruding ring main body 17 forms the conical extruding surface 11, the roller 10 is installed on the detachable block 18, a detachable block installation cavity 19 extends from the outer wall of the extruding ring main body 17 to the roller exposing opening 13 of the conical extruding surface 11, and the detachable block 18 is detachably embedded in the extruding ring main body 17 through the detachable block installation cavity 19. A lubricant groove 20 for communicating the lubricant channel 12 is provided between the detachable block 18 and the roller 10, a cleaning groove 21 for communicating the lubricant groove 20 to the outer side of the extrusion ring assembly 4 is formed below the detachable block 18, a cleaning groove block 22 is detachably blocked in the cleaning groove 21, and the lubricant in the lubricant groove 20 can be discharged after the groove block 22 is detached.
The above embodiments are only preferred embodiments of the present invention, and are not limited to the present invention, and all equivalent changes made according to the design key of the present invention fall within the protection scope of the present invention.
Claims (7)
1. An automatic slow-release lubricated magnesium alloy bar forward extrusion die which is characterized in that: comprises a male die (1) arranged on an upper die holder of a press machine and a female die assembly (2) arranged on a lower die holder of the press machine, wherein the female die assembly (2) comprises a female die main body (3) and an extrusion ring assembly (4), an extrusion channel (5) is vertically formed below the male die (1), a blank inlet (6) is formed at the upper end of the extrusion channel (5), a blank outlet (7) is formed at the lower end of the extrusion channel, the extrusion channel (5) is formed by downwards extending the blank inlet (6) to form a blank accommodating cavity (8), the extrusion ring assembly (4) is arranged on the female die main body (3), the extrusion ring assembly (4) comprises an extrusion ring (9) and a roller (10), the roller (10) is installed in the extrusion ring (9) in a rolling mode, the extrusion ring (9) is inwards folded downwards from the blank accommodating cavity (8) to form a conical extrusion surface (11) tangential to the surface of the roller (10), the lower end of the conical extrusion surface (11) is communicated with the blank outlet (7), the roller (10) is exposed out of the conical extrusion surface (11), and a lubricant channel (12) for supplying oil to the surface of the roller (10) is formed in the extrusion ring (9); the extrusion ring (9) comprises an extrusion ring main body (17) and a detachable block body (18), wherein the extrusion ring main body (17) forms the conical extrusion surface (11), the roller (10) is arranged on the detachable block body (18), and the detachable block body (18) is detachably embedded into the extrusion ring main body (17); a lubricant groove (20) for conducting a lubricant channel (12) is formed between the detachable block (18) and the roller (10), a cleaning groove (21) for conducting the lubricant groove (20) to the outer side of the extrusion ring assembly (4) is formed below the detachable block (18), and a cleaning groove block (22) is detachably plugged in the cleaning groove (21).
2. An automatic slow-release lubricated magnesium alloy bar forward extrusion die according to claim 1, wherein: the middle part of the conical extrusion surface (11) is provided with a roller exposing port (13), and the roller (10) is exposed out of the conical extrusion surface (11) through the roller exposing port (13).
3. An automatic slow-release lubricated magnesium alloy bar forward extrusion die according to claim 1, wherein: the die body (3) comprises an upper die (14) and a lower die (15) which are spliced up and down, the blank accommodating cavity (8) is formed in the upper die (14), an extrusion ring assembly mounting cavity (16) is formed at the splicing position of the upper die (14) and the lower die (15), and the extrusion ring assembly (4) is detachably mounted in the extrusion ring assembly mounting cavity (16).
4. An automatic slow-release lubricated magnesium alloy bar forward extrusion die according to claim 1, wherein: a detachable block mounting cavity (19) extends from the outer wall of the extrusion ring main body (17) to the conical extrusion surface (11), and the detachable block (18) is embedded into the extrusion ring main body (17) through the detachable block mounting cavity (19).
5. An automatic slow-release lubricated magnesium alloy bar forward extrusion die according to claim 1, wherein: the blank accommodating cavity (8) is cylindrical, and the conical extrusion surface (11) is a conical surface.
6. The magnesium alloy bar forward extrusion die with automatic slow-release lubrication according to claim 5, wherein: the extrusion ring (9) is uniformly distributed with a plurality of rollers (10) along the circumference of the conical extrusion surface (11).
7. The magnesium alloy bar forward extrusion die with automatic slow-release lubrication according to claim 5, wherein: the side walls of the roller (10) are concavely curved to form line contact with the billet as it flows along the tapered extrusion face (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499951.4A CN113967669B (en) | 2021-12-09 | 2021-12-09 | Automatic slow-release lubrication magnesium alloy bar forward extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499951.4A CN113967669B (en) | 2021-12-09 | 2021-12-09 | Automatic slow-release lubrication magnesium alloy bar forward extrusion die |
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| Publication Number | Publication Date |
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| CN113967669A CN113967669A (en) | 2022-01-25 |
| CN113967669B true CN113967669B (en) | 2024-06-04 |
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| CN202111499951.4A Active CN113967669B (en) | 2021-12-09 | 2021-12-09 | Automatic slow-release lubrication magnesium alloy bar forward extrusion die |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888110A (en) * | 2022-03-09 | 2022-08-12 | 武汉理工大学 | Forming die and forming method of metal corrugated pipe |
| CN114589284B (en) * | 2022-05-10 | 2022-07-29 | 中北大学 | One-fire cogging die and method for alloy bar stock and upsetting-extruding-upsetting large deformation method |
| CN115069809B (en) * | 2022-07-20 | 2022-11-29 | 中北大学 | Forming method of ultrahigh-strength and high-toughness aluminum alloy |
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| 改变摩擦方式的挤压成形研究现状;杨程;张敏娜;汤丹妮;张喆;赵升吨;;锻压技术(第05期);第6-11、26页 * |
| 镁合金筒形件挤压成形金属流动规律研究;王德林等;试验研究;20050131;第91-93页 * |
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