CN114505440A - Hollow major axis backward extrusion self-lubricating die - Google Patents
Hollow major axis backward extrusion self-lubricating die Download PDFInfo
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- CN114505440A CN114505440A CN202210007629.3A CN202210007629A CN114505440A CN 114505440 A CN114505440 A CN 114505440A CN 202210007629 A CN202210007629 A CN 202210007629A CN 114505440 A CN114505440 A CN 114505440A
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- die
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- female die
- lubricating
- female
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J3/00—Lubricating during forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a hollow long shaft backward extrusion self-lubricating die which comprises a female die, wherein the inner part of the female die is hollow, one end of the female die is opened, and the other end of the female die is closed; the blank is placed in the female die from the open end of the female die, a male die is arranged on the outer side of the open end of the female die and used for extruding the blank, and the section diameter of the male die is smaller than that of the blank; one end of the male die, which is close to the blank, is provided with a horizontal hole which is superposed with the central line of the male die, a lubricant is filled in the horizontal hole, and the side wall of the male die is uniformly provided with a plurality of vertical holes which are communicated with the horizontal hole; a plurality of through holes are uniformly formed in the side wall of the female die and communicated with a pressure pipeline arranged outside the female die, and a lubricant is filled in the pressure pipeline. The hollow long shaft backward extrusion self-lubricating die provided by the invention is fully lubricated in the extrusion process, and can improve the forging forming quality of a hollow shaft.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a hollow long shaft backward extrusion self-lubricating die.
Background
The steel industry strongly supports and drives the development of related industries, social employment is promoted, and hollow shaft parts are the most common parts in the mechanical industry and have wide application in the fields of automobiles, motorcycles, energy mining and the like. At present, the processing method of the parts adopts plastic forming, which not only can improve the material utilization rate and the mechanical property of the parts, ensure the continuity of metal flow lines, but also can meet the requirement of mass production. The reverse extrusion forming of the inner hole of the hollow shaft part is one of plastic forming methods, but in the process of long shaft extrusion, the phenomenon of insufficient lubrication often occurs, and the forming quality of the forge piece is reduced. Therefore, there is a need to develop a reliable die that provides adequate lubrication.
Disclosure of Invention
The invention aims to provide a hollow long shaft backward extrusion self-lubricating die, which solves the problems in the prior art, is sufficient in lubrication in the extrusion process, and can improve the forging forming quality of a hollow shaft.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a hollow long shaft backward extrusion self-lubricating die which comprises a female die, wherein the inner part of the female die is hollow, one end of the female die is opened, and the other end of the female die is closed; the blank is placed in the female die from the open end of the female die, a male die, namely a backward extrusion core rod, is arranged on the outer side of the open end of the female die, the male die is used for extruding the blank, and the section diameter of the male die is smaller than that of the blank; one end of the male die, which is close to the blank, is provided with a horizontal hole which is overlapped with the central line of the male die, the diameter of the horizontal hole is smaller and deeper, but the horizontal hole does not penetrate through the other end of the male die, a lubricant is filled in the horizontal hole, the side wall of the male die is uniformly provided with a plurality of vertical holes which are communicated with the horizontal hole and used for leaking the lubricant, a certain distance exists between the vertical holes of different circles, the distance of the distance is determined according to the extrusion process and the difference of materials, in the extrusion process, part of metal materials of the blank can be extruded into the horizontal hole under the action of strong pressure, so that the pressure born by the lubricant in the horizontal hole is increased, and the lubricant overflows to the surface of the male die through the peripheral vertical holes, thereby realizing the lubricating effect; a plurality of through holes are evenly formed in the side wall of the female die, the through holes are communicated with a pressure pipeline arranged outside the female die, and the pressure pipeline is used for filling lubricant, so that the lubricant is extruded into the inner side of the female die through the pressure pipeline to achieve a lubricating effect.
Optionally, the pressure pipeline and the through holes are connected through a pipeline, each pipeline connected with the through holes is provided with a valve, and the valves are sequentially opened along with the extrusion process through electromagnetic control, so that the waste of the lubricant is reduced, and the utilization rate of the lubricant is improved.
Optionally, the die is of a cylindrical structure, the die comprises a first half die and a second half die which are identical in structure and symmetrically arranged, and after the first half die and the second half die are in contact alignment, the outer side of the first half die and the outer side of the second half die are sleeved with the clamp.
Optionally, a limiting post is fixedly arranged on the end surface of the first half die, a limiting hole corresponding to the position of the limiting post is fixedly arranged on the end surface of the second half die, and the first half die and the second half die are fixedly connected through the limiting post inserted in the limiting hole.
Optionally, the fixture is located including the cover the first anchor clamps of die outside one end, keep away from in the die outside a pot head of first anchor clamps is equipped with the second anchor clamps, the fixed cover in the second anchor clamps outside is equipped with the third anchor clamps.
Compared with the prior art, the invention has the following technical effects:
the invention can realize the lubrication of the core part and the outside during backward extrusion and save the lubricant. When extrusion is started, a horizontal hole of the male die is filled with a lubricant, a pressure pipeline on the outer side of the female die starts to pressurize, meanwhile, a valve connected with a part of through holes close to a blank is opened, lubrication of the female die and the blank is started, along with the progress of backward extrusion, part of metal enters the horizontal hole of the male die, the pressure in the horizontal hole is increased, and the lubricant begins to overflow from near to far along a vertical hole, so that lubrication between the male die and the blank is realized, meanwhile, the forging piece is longer, the valves at joints of the pressure pipeline and the female die are opened in sequence, real-time lubrication between the female die and the forging piece is realized, and the quality of the forging piece is ensured under the condition of sufficient lubrication.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a hollow long shaft backward extrusion self-lubricating mold according to the present invention;
FIG. 2 is an axial schematic view of a hollow long shaft backward extrusion self-lubricating mold according to the present invention;
FIG. 3 is a schematic perspective view of a male mold of the present invention;
FIG. 4 is a schematic cross-sectional view of the punch lubricant charge of the present invention;
FIG. 5 is a perspective view of a first mold half of the present invention;
FIG. 6 is a perspective view of a second mold half of the present invention;
FIG. 7 is a perspective view of a pressure conduit according to the present invention;
FIG. 8 is a schematic diagram of the working principle of the present invention;
FIG. 9 is a partial enlarged view of the schematic diagram of the working principle of the present invention;
wherein: 100. the hollow long shaft backward extrusion self-lubricating die comprises a hollow long shaft backward extrusion self-lubricating die body, 1, a male die, 2, a first half die, 3, a pressure pipeline, 4, a blank, 5, a second half die, 6, a first clamp, 7, a second clamp, 8, a third clamp, 9, a lubricant, 10, a limiting column, 11, a limiting hole, 12, a valve, 13, a horizontal hole, 14, a vertical hole and 15 through holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a hollow long shaft backward extrusion self-lubricating die, which solves the problems in the prior art, is sufficient in lubrication in the extrusion process, and can improve the forging forming quality of a hollow shaft.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 7, the present invention provides a hollow long shaft backward extrusion self-lubricating mold 100, which includes a hollow female mold with an open end and a closed end; the blank 4 is placed in the female die from the open end of the female die, and the male die 1, namely a backward extrusion core rod, is arranged on the outer side of the open end of the female die; the male die 1 is used for extruding a blank 4, and the section diameter of the male die 1 is smaller than that of the blank 4; the axis of the female die and the axis of the male die 1 coincide with the axis of the blank 4, one end of the male die 1 close to the blank 4 is provided with a horizontal hole 13 coinciding with the central line of the male die 1, the diameter of the horizontal hole 13 is smaller and deeper, but the horizontal hole 13 does not penetrate through the other end of the male die 1, the horizontal hole 13 is filled with a lubricant 9, the side wall of the male die 1 is uniformly provided with a plurality of vertical holes 14 communicated with the horizontal hole 13 for leaking the lubricant 9, a certain interval exists between the vertical holes 14 in different circles, the interval distance is determined according to the extrusion process and the difference of materials, in the extrusion process, part of metal materials of the blank 4 can be extruded into the horizontal hole 13 under the action of strong pressure, so that the pressure born by the lubricant 9 in the horizontal hole 13 is increased, and the lubricant 9 overflows to the surface of the male die 1 through the peripheral vertical holes 14 to realize the lubricating effect; a plurality of through holes 15 are evenly formed in the side wall of the female die, the through holes 15 are communicated with a pressure pipeline 3 arranged outside the female die, a lubricant 9 is filled in the pressure pipeline 3, and the lubricant 9 is extruded into the inner side of the female die through the through holes 15 through the pressure pipeline 3, so that the lubricating effect is achieved.
Specifically, the pressure pipeline 3 is connected with the through holes 15 through pipelines and interfaces, the pipeline connected with each through hole 15 is provided with a valve 12, and the valves are sequentially opened along with the extrusion process through electromagnetic control, so that the waste of the lubricant 9 is reduced, and the utilization rate of the lubricant 9 is improved.
Further preferably, the female die is of a cylindrical structure and comprises a first half die 2 and a second half die 5 which are identical in structure and symmetrically arranged, and after the first half die 2 and the second half die 5 are in contact alignment, the outer side of the first half die and the outer side of the second half die are sleeved with the clamp. The end face of the first half die 2 is fixedly provided with a limiting column 10, the end face of the second half die 5 is fixedly provided with a limiting hole 11 corresponding to the position of the limiting column 10, and the first half die 2 and the second half die 5 are fixedly connected through the limiting column 10 inserted into the limiting hole 11. The fixture comprises a first fixture 6 sleeved at one end of the outer side of the female die, a second fixture 7 is sleeved at one end of the outer side of the female die, which is far away from the first fixture 6, and a third fixture 8 is fixedly sleeved at the outer side of the second fixture 7.
As shown in fig. 8 and 9, when extrusion is started, the horizontal hole 13 of the punch 1 is filled with the lubricant 9, the pressure pipeline 3 on the outer side of the die starts to be pressurized, meanwhile, the valve 12 connected with the through hole 15 on the part close to the blank 4 is opened, lubrication is started to be performed on the die and the blank 4, along with the progress of backward extrusion, part of metal enters the horizontal hole 13 of the punch 1, the pressure in the horizontal hole 13 increases, and the lubricant 9 starts to overflow from near to far along the vertical hole 14, so that lubrication between the punch 1 and the blank 4 is realized, meanwhile, the length of the forge piece is longer, the pressure pipeline 3 and the valve 12 at the joint of the die are opened in sequence, real-time lubrication between the die and the forge piece is realized, and the quality of the forge piece is ensured under the condition of sufficient lubrication.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. The utility model provides a hollow major axis backward extrusion self-lubricating die which characterized in that: the die comprises a female die which is hollow inside and is provided with an opening at one end and a closed end at the other end; the blank is placed in the female die from the open end of the female die, a male die is arranged on the outer side of the open end of the female die and used for extruding the blank, and the section diameter of the male die is smaller than that of the blank; one end of the male die, which is close to the blank, is provided with a horizontal hole which is superposed with the central line of the male die, a lubricant is filled in the horizontal hole, and the side wall of the male die is uniformly provided with a plurality of vertical holes which are communicated with the horizontal hole; a plurality of through holes are uniformly formed in the side wall of the female die and communicated with a pressure pipeline arranged outside the female die, and a lubricant is filled in the pressure pipeline.
2. The hollow long shaft backward extrusion self-lubricating die of claim 1, characterized in that: the pressure pipeline is connected with the through holes through pipelines, and each pipeline connected with the through holes is provided with a valve.
3. The hollow long shaft backward extrusion self-lubricating die of claim 1, characterized in that: the die is of a cylindrical structure, the die comprises a first half die and a second half die which are identical in structure and symmetrically arranged, and after the first half die and the second half die are in contact alignment, a clamp is sleeved on the outer side of the first half die and the second half die.
4. The hollow long shaft backward extrusion self-lubricating die of claim 3, characterized in that: the end face of the first half die is fixedly provided with a limiting column, the end face of the second half die is fixedly provided with a limiting hole corresponding to the position of the limiting column, and the first half die is fixedly connected with the second half die through the limiting column inserted in the limiting hole.
5. The hollow long shaft backward extrusion self-lubricating die of claim 3, characterized in that: anchor clamps are located including the cover the first anchor clamps of die outside one end, keep away from in the die outside a pot head of first anchor clamps is equipped with the second anchor clamps, the fixed cover in the second anchor clamps outside is equipped with the third anchor clamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210007629.3A CN114505440B (en) | 2022-01-06 | 2022-01-06 | Hollow major axis backward extrusion self-lubricating mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210007629.3A CN114505440B (en) | 2022-01-06 | 2022-01-06 | Hollow major axis backward extrusion self-lubricating mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114505440A true CN114505440A (en) | 2022-05-17 |
| CN114505440B CN114505440B (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210007629.3A Active CN114505440B (en) | 2022-01-06 | 2022-01-06 | Hollow major axis backward extrusion self-lubricating mould |
Country Status (1)
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| CN (1) | CN114505440B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB832138A (en) * | 1957-09-06 | 1960-04-06 | Comptoir Ind Etirage | Production by extrusion of hollow metallic sections |
| US3705509A (en) * | 1969-11-12 | 1972-12-12 | Federal Mogul Corp | Fluid-conducting hot-forging die and method of making the same |
| JPH08267120A (en) * | 1995-03-30 | 1996-10-15 | Musashi Seimitsu Ind Co Ltd | Die device for extrusion molding |
| CN203532532U (en) * | 2013-10-31 | 2014-04-09 | 长沙中联消防机械有限公司 | Sliding block and engineering machinery |
| CN106862290A (en) * | 2017-02-24 | 2017-06-20 | 中北大学 | A kind of cup shell backward extrusion forming device and manufacturing process |
| CN107262543A (en) * | 2017-07-28 | 2017-10-20 | 兰州理工大学 | A kind of self-lubricating structure of thermal-squeezing device |
| CN206662180U (en) * | 2016-12-29 | 2017-11-24 | 宜昌华益工具制造股份有限公司 | A kind of sleeve processing device |
| CN108213104A (en) * | 2018-03-19 | 2018-06-29 | 哈尔滨工业大学 | A kind of extrusion die of continuous lubrication |
| CN209753677U (en) * | 2019-04-04 | 2019-12-10 | 重庆鼎鼎机电有限公司 | Device for cold extrusion processing of gearbox gear |
-
2022
- 2022-01-06 CN CN202210007629.3A patent/CN114505440B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB832138A (en) * | 1957-09-06 | 1960-04-06 | Comptoir Ind Etirage | Production by extrusion of hollow metallic sections |
| US3705509A (en) * | 1969-11-12 | 1972-12-12 | Federal Mogul Corp | Fluid-conducting hot-forging die and method of making the same |
| JPH08267120A (en) * | 1995-03-30 | 1996-10-15 | Musashi Seimitsu Ind Co Ltd | Die device for extrusion molding |
| CN203532532U (en) * | 2013-10-31 | 2014-04-09 | 长沙中联消防机械有限公司 | Sliding block and engineering machinery |
| CN206662180U (en) * | 2016-12-29 | 2017-11-24 | 宜昌华益工具制造股份有限公司 | A kind of sleeve processing device |
| CN106862290A (en) * | 2017-02-24 | 2017-06-20 | 中北大学 | A kind of cup shell backward extrusion forming device and manufacturing process |
| CN107262543A (en) * | 2017-07-28 | 2017-10-20 | 兰州理工大学 | A kind of self-lubricating structure of thermal-squeezing device |
| CN108213104A (en) * | 2018-03-19 | 2018-06-29 | 哈尔滨工业大学 | A kind of extrusion die of continuous lubrication |
| CN209753677U (en) * | 2019-04-04 | 2019-12-10 | 重庆鼎鼎机电有限公司 | Device for cold extrusion processing of gearbox gear |
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|---|---|
| CN114505440B (en) | 2022-12-16 |
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