CN113996744A - Forging die for cylinder bottom of hydraulic oil cylinder of engineering machinery - Google Patents
Forging die for cylinder bottom of hydraulic oil cylinder of engineering machinery Download PDFInfo
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- CN113996744A CN113996744A CN202111362623.XA CN202111362623A CN113996744A CN 113996744 A CN113996744 A CN 113996744A CN 202111362623 A CN202111362623 A CN 202111362623A CN 113996744 A CN113996744 A CN 113996744A
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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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Abstract
The invention relates to the technical field of forging processing, in particular to a forging die for a cylinder bottom of a hydraulic oil cylinder of engineering machinery, which comprises: the upper die and the lower die are respectively provided with an upper pressure head and a lower pressure head at the corresponding positions in the vertical direction in the die cavity, and the upper pressure head and the lower pressure head process through holes; the sliding block is arranged on the lower die in a sliding mode along the horizontal direction and at least partially positioned in the cavity, a side pressure head is arranged at one end, positioned in the cavity, of the sliding block, and the side pressure head is used for machining a groove; the top end of the sliding block is provided with a slope section, the upper die is correspondingly provided with a first slope at the slope section, and when the upper die moves downwards, the slope section is matched with the first slope to drive the sliding block to move horizontally towards the direction close to the cavity. According to the invention, two times of forging processing are omitted, the second time of forging is prevented from generating extrusion deformation on the cylinder bottom shape forged for the first time, and meanwhile, the transfer is not needed after forging, so that the processing process of the blank is safer.
Description
Technical Field
The invention relates to the technical field of forging processing, in particular to a forging die for a cylinder bottom of a hydraulic oil cylinder of engineering machinery.
Background
Forging is a processing method which utilizes forging machinery to apply pressure on a metal blank to cause the metal blank to generate plastic deformation so as to obtain a forging with certain mechanical property, certain shape and certain size. The defects of casting-state looseness, insufficient forming and the like generated in the smelting process of metal can be eliminated through forging, the microstructure is optimized, and meanwhile, due to the fact that a complete metal streamline is reserved, the mechanical property of the forging is generally superior to that of a casting made of the same material. Important parts with high load and severe working conditions in related machines are mainly forged pieces except for plates, sections or welding pieces which are simple in shape and can be rolled.
As shown in fig. 1, the cylinder bottom 5 of the hydraulic cylinder of the engineering machine has a through hole 51 and a groove 52 in addition to its shape profile, in the prior art, the forging process of the cylinder bottom 5 usually includes heating a cylindrical blank to a high temperature, then processing the shape profile of the cylinder bottom by a forging die, and initially processing the through hole 51, then processing the groove 52 by a second forging die, and finally punching the through hole 51, in the process of two forging processes, the second forging may generate extrusion deformation to the shape of the cylinder bottom 5 forged for the first time, and the blank is transferred between two forging processes usually by manual operation, because the blank has a high temperature, it is dangerous in the transfer process.
In view of the above problems, the designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is matched with the application of the theory to actively carry out research and innovation, so as to create a forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machinery, and the forging die is more practical.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a forging die for a cylinder bottom of a hydraulic oil cylinder of an engineering machine, which effectively solves the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: a forging die for the cylinder bottom of a hydraulic oil cylinder of engineering machinery comprises:
the upper die and the lower die are respectively provided with an upper pressure head and a lower pressure head at the corresponding positions in the vertical direction in the cavity, and the upper pressure head and the lower pressure head process through holes;
the sliding block is arranged on the lower die in a sliding mode along the horizontal direction, at least part of the sliding block is located in the cavity, one end, located in the cavity, of the sliding block is provided with a side pressure head, and the side pressure head is used for machining a groove;
when the upper die moves downwards, the slope section is matched with the first slope to drive the sliding block to move horizontally in a direction close to the cavity.
Furthermore, the sliding block is at least partially positioned outside the lower die, an elastic component is arranged at one end positioned outside the lower die, and the elastic component limits the sliding block to move towards one end close to the cavity.
Further, when the first inclined surface contacts with the slope section, the distance between the upper pressing head and the lower pressing head is smaller than the height of the blank.
Furthermore, the slide block is provided with a vertical section at the slope section, the vertical section is located at the bottom end of the slope section, the upper die is correspondingly provided with a vertical surface, the vertical surface is located at the top end of the first inclined surface, the upper die is pushed to move when moving downwards to the contact between the first inclined surface and the slope section, and the upper die limits the movement of the slide block to one end far away from the cavity when continuing to move to the contact between the vertical surface and the vertical section.
Furthermore, the slide block is provided with a slot between the slope section and the vertical section, the slot comprises a vertical end and a horizontal end, the vertical end, the horizontal end and the vertical section form a stepped structure, a press roller is arranged in the slot, the press roller is horizontally arranged and rotates by taking the horizontal direction as an axis, and a circle where the outline of the press roller is located is tangent to the planes of the slope section and the vertical section respectively.
Furthermore, the distance between a tangent line of a circle of the outer contour of the press roller and a plane of the slope section, which is tangent to the plane, and the slope section is smaller than the length of the first inclined plane, and when the first inclined plane is in contact with the press roller, the first inclined plane is at least partially attached to the slope section.
Further, the distance between a tangent line of a circle of the outer contour of the press roller and a plane of the vertical section, and the vertical section, is smaller than the height of the vertical surface, and when the vertical surface is in contact with the press roller, the vertical surface is at least partially attached to the vertical section.
Furthermore, a plurality of cooling pipelines are arranged at the position, close to the groove, of the sliding block, and the cooling pipelines are horizontally arranged.
Further, a second inclined plane is arranged on the upper die and located at the top end of the vertical plane, and when the upper die and the lower die are assembled, the second inclined plane is attached to the slope section.
The invention has the beneficial effects that: according to the invention, the upper die and the lower die are arranged, the cavity is formed between the upper die and the lower die, the upper pressing head is arranged on the upper die, the lower pressing head is arranged on the lower die, the sliding block is arranged on the lower die, the side pressing head is arranged on the sliding block, the slope section is arranged on the sliding block, and the first slope is correspondingly arranged on the upper die, so that the upper die can drive the sliding block to move towards the cavity together when the upper die moves from top to bottom and the lower die is closed, thereby simultaneously processing the through hole and the groove on the blank, avoiding twice forging processing, preventing the second forging from generating extrusion deformation on the cylinder bottom shape forged for the first time, simultaneously, needing no transfer after forging, and being safer for the processing process of the blank.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structure of a cylinder bottom;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view with the upper mold hidden;
FIG. 4 is a cross-sectional view of the present invention;
FIGS. 5 to 7 are sectional views of the upper mold at various stages during closing thereof;
FIG. 8 is a schematic view of the mating section of the upper mold and the slide at various stages during closing of the upper mold in one embodiment;
FIG. 9 is a schematic view of the construction of the press roll;
FIG. 10 is a schematic view of the mating portion of the upper mold and the slide at different stages during the closing of the upper mold in another embodiment.
Reference numerals: 1. an upper die; 11. an upper pressure head; 12. a first inclined plane; 13. a vertical plane; 14. a second inclined plane; 2. a lower die; 21. a lower pressure head; 3. a slider; 31. a side indenter; 32. a slope section; 33. a vertical section; 34. grooving; 35. a compression roller; 36. a cooling duct; 4. an elastic component; 5. a cylinder bottom; 51. a through hole; 52. and (4) a groove.
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.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2 to 9: a forging die for the cylinder bottom of a hydraulic oil cylinder of engineering machinery comprises:
the upper die 1 and the lower die 2 comprise a cavity between the upper die 1 and the lower die 2, the cavity is arranged corresponding to the shape of the cylinder bottom 5, the upper die 1 and the lower die 2 are respectively provided with an upper pressure head 11 and a lower pressure head 21 at the corresponding positions in the vertical direction in the cavity, and the upper pressure head 11 and the lower pressure head 21 process the through hole 51;
the sliding block 3 is arranged on the lower die 2 in a sliding mode along the horizontal direction, at least part of the sliding block 3 is located in the cavity, one end, located in the cavity, of the sliding block 3 is provided with a side pressure head 31, and the side pressure head 31 is used for machining the groove 52;
the top end of the sliding block 3 is provided with a slope section 32, the upper die 1 is correspondingly provided with a first slope 12 at the slope section 32, and when the upper die 1 moves downwards, the slope section 32 is matched with the first slope 12 to drive the sliding block 3 to move horizontally towards the direction close to the cavity.
As shown in fig. 2 to 4, through setting up mould 1 and lower mould 2, there is a die cavity between mould 1 and the lower mould 2, upward be provided with pressure head 11 on the mould 1, be provided with down pressure head 21 on the lower mould 2, be provided with slider 3 on the lower mould 2, be provided with side pressure head 31 on the slider 3, wherein, be provided with slope section 32 on the slider 3, it is provided with first inclined plane 12 to go up the correspondence on the mould 1, thereby when going up mould 1 from last to moving and lower mould 2 compound die, it can drive slider 3 to the die cavity motion together to go up mould 1, thereby to stock simultaneous processing through-hole 51 and recess 52, twice forging processing has been removed from, prevent that the forging of second time from producing extrusion deformation to the cylinder bottom 5 shape of forging out for the first time, need not to shift after forging simultaneously, it is safer to the course of working of stock.
In this embodiment, the sliding block 3 is at least partially located outside the lower mold 2, and an elastic component 4 is disposed at an end located outside the lower mold 2, and the elastic component 4 limits the sliding block 3 from moving to an end close to the cavity.
Through set up elastic component 4 in the one end that slider 3 is located the lower mould 2 outside, after last mould 1 compound die is in place to the stock processing completion, slider 3 can return automatically and reset, prepares for next processing.
As shown in fig. 5 to 6, when the first inclined surface 12 contacts the slope section 32, the distance between the upper pressing head 11 and the lower pressing head 21 is smaller than the height of the blank.
During the forging process of the blank, the blank is firstly placed into a cavity of a lower die 2, when an upper die 1 is closed, if a side pressure head 31 on a slide block 3 applies pressure to the slide block 3 first, and at this time, an upper pressure head 11 on the upper die 1 does not extrude the blank with a lower pressure head 21 on the lower die 2, the blank is easy to deflect, and the processing of the blank is influenced, so that when a slope section 32 on the slide block 3 and a first slope 12 on the upper die 1 are set to be a first slope 12 which is in contact with the slope section 32, the distance between the upper pressure head 11 and the lower pressure head 21 is smaller than the height of the blank, so that during the closing process of the upper die 1, the blank is extruded by the upper pressure head 11 and the lower pressure head 21 first, two pits are formed at the positions where the blank is extruded by the upper pressure head 11 and the lower pressure head 21, and after the blank is positioned, the side pressure head 31 on the slide block 3 can extrude the blank, thereby ensuring that the position of the blank does not deflect, the processing technology and quality are ensured.
As shown in fig. 5 to 8, the slider 3 is provided with a vertical section 33 at the slope section 32, the vertical section 33 is located at the bottom end of the slope section 32, the upper die 1 is correspondingly provided with a vertical surface 13, the vertical surface 13 is located at the top end of the first inclined surface 12, when the upper die 1 moves downwards until the first inclined surface 12 contacts with the slope section 32, the slider 3 is pushed to move, and when the upper die 1 continues to move until the vertical surface 13 contacts with the vertical section 33, the upper die 1 limits the slider 3 to move towards the end away from the cavity.
The vertical section 33 is arranged on the sliding block 3, the vertical surface 13 is correspondingly arranged on the upper die 1, so that in the process of die assembly of the upper die 1, the first inclined surface 12 is firstly contacted with the inclined section 32 to drive the sliding block 3 to move, then after the sliding block 3 moves in place, the upper die 1 is not subjected to die assembly, the upper die 1 continues to be subjected to die assembly downwards, at the moment, the sliding block 3 does not slide any more, so that the situation that in the process of forging and processing, the groove 52 is processed and then the through hole 51 is processed can be ensured, because the force required for processing the groove 52 is smaller than the force required for processing, and in the process of die assembly downwards of the upper die 1, the pressure is larger, if the through hole 51 and the groove 52 are processed simultaneously, the pressure on the inclined section 32 on the sliding block 3 is too large, the processing on the groove 52 is finished first and then the processing on the through hole 51 is finished, and the process that the sliding block 3 moves in place first and can also be ensured to extrude the blank subsequently, the blank can fill the cavity and cannot overflow from the gap at the slide block 3, so that the integrity of the appearance of the cylinder bottom 5 is ensured.
As shown in fig. 9 to 10, the slider 3 is provided with a slot 34 between the slope section 32 and the vertical section 33, the slot 34 includes a vertical end and a horizontal end, the vertical end and the horizontal end and the vertical section 33 form a ladder structure, a press roller 35 is arranged in the slot 34, the press roller 35 is horizontally arranged and rotates with the horizontal direction as an axis, and a circle of an outer contour of the press roller 35 is tangent to a plane of the slope section 32 and a plane of the vertical section 33 respectively.
As shown in fig. 8, since the pressure is high and the temperature is high during the forging process, at the boundary between the slope section 32 and the vertical section 33 of the slider 3, the first slope 12 and the vertical surface 13 of the upper die 1 need to slide from the boundary, so that the temperature and the pressure are high, which easily deforms the metal and affects the service life. Therefore, a slot 34 is arranged between the slope section 32 and the vertical section 33, a press roller 35 is arranged in the slot 34, the press roller 35 is arranged in a rotating mode, and the circle of the outer contour of the press roller 35 is tangent to the planes of the slope section 32 and the vertical section 33 respectively, so that when the first slope 12 of the upper die 1 passes through the vertical plane 13, sliding friction is changed into rolling friction, friction is reduced, heat and pressure load is reduced, and service life is prolonged.
As shown in fig. 10, the distance from the tangent line of the circle of the outer contour of the pressing roller 35 tangent to the plane of the slope section 32 to the slope section 32 is smaller than the length of the first inclined plane 12, and when the first inclined plane 12 contacts the pressing roller 35, the first inclined plane 12 at least partially abuts against the slope section 32. And the distance between the circle of the outer contour of the compression roller 35 and the tangent line of the plane of the vertical section 33 and the vertical section 33 is smaller than the height of the vertical surface 13, and when the vertical surface 13 is contacted with the compression roller 35, at least part of the vertical surface 13 is attached to the vertical section 33.
When the first inclined plane 12 is not separated from the inclined plane section 32, the first inclined plane 12 is in contact with the compression roller 35, the stress area of the first inclined plane 12 can be increased, friction is reduced, when the vertical plane 13 is not separated from the compression roller 35, the vertical plane 13 is in contact with the vertical section 33, the stress area of the vertical plane 13 can be increased, friction is reduced, and load borne by the compression roller 35 is reduced.
Moreover, since the slot 34 includes a vertical end and a horizontal end, the pressing roller 35 must have a gap in the slot 34, so that a cooling space can exist at the gap, when the first inclined surface 12 moves to partially separate from the inclined surface, a distance which is not in contact with the inclined surface and the pressing roller 35 exists before the first inclined surface 12 contacts with the pressing roller 35, and at this time, the partially separated first inclined surface 12 from the inclined surface can firstly dissipate heat and contact with the pressing roller 35 at a lower temperature; when the vertical surface 13 is partially disengaged from the compression roller 35, a non-contact distance exists before the vertical surface 13 is contacted with the vertical section 33, so that the vertical surface 13 can also radiate heat firstly, and is contacted with the vertical section 33 at a lower temperature, the abrasion and fatigue of the upper die 1 are reduced, and the service life of the upper die 1 is prolonged.
Wherein, the slider 3 is provided with a plurality of cooling pipelines 36 near the slot 34, and the cooling pipelines 36 are horizontally arranged.
Through being provided with a plurality of cooling tube 36 on slider 3 near fluting 34 department, can cool off the first inclined plane 12 and the vertical face 13 on the last mould 1 that move to here, cooling tube 36 can be end to end each other, draws from the side of slider 3 or the one end of keeping away from the die cavity, reduces and goes up mould 1 wearing and tearing and fatigue, increases the life of last mould 1.
As shown in fig. 5 to 10, in the present embodiment, the upper die 1 is provided with a second inclined surface 14, the second inclined surface 14 is located at the top end of the vertical surface 13, and when the upper die 1 and the lower die 2 are closed, the second inclined surface 14 is abutted to the slope section 32.
Through the arrangement of the second inclined surface 14, the upper die 1 can be completely attached to the sliding block 3 when the die is closed, the gap is reduced, the blank is forged and formed in the die cavity and cannot run out of the die cavity, the appearance of the cylinder bottom 5 is ensured, and the product quality is improved.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides an engineering machine tool hydraulic cylinder bottom of a jar forges mould which characterized in that includes:
the upper die and the lower die are respectively provided with an upper pressure head and a lower pressure head at the corresponding positions in the vertical direction in the cavity, and the upper pressure head and the lower pressure head process through holes;
the sliding block is arranged on the lower die in a sliding mode along the horizontal direction, at least part of the sliding block is located in the cavity, one end, located in the cavity, of the sliding block is provided with a side pressure head, and the side pressure head is used for machining a groove;
when the upper die moves downwards, the slope section is matched with the first slope to drive the sliding block to move horizontally in a direction close to the cavity.
2. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine as claimed in claim 1, wherein the sliding block is at least partially located outside the lower die, and an elastic component is arranged at one end located outside the lower die and limits the sliding block to move towards one end close to the cavity.
3. The hydraulic oil cylinder bottom forging die of engineering machinery as claimed in claim 2, wherein when the first inclined surface contacts with the slope section, the distance between the upper pressing head and the lower pressing head is smaller than the height of the blank.
4. The engineering mechanical hydraulic oil cylinder bottom forging die as claimed in claim 2, wherein the sliding block is provided with a vertical section at the slope section, the vertical section is located at the bottom end of the slope section, the upper die is correspondingly provided with a vertical surface, the vertical surface is located at the top end of the first inclined surface, the upper die pushes the sliding block to move when moving downwards until the first inclined surface contacts with the slope section, and the upper die limits the sliding block to move towards one end away from the cavity when continuing to move until the vertical surface contacts with the vertical section.
5. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine as claimed in claim 4, wherein the sliding block is provided with a slot between the slope section and the vertical section, the slot comprises a vertical end and a horizontal end, the vertical end and the horizontal end and the vertical section form a ladder structure, a press roller is arranged in the slot, the press roller is horizontally arranged and rotates by taking the horizontal direction as an axis, and a circle where an outer contour of the press roller is located is tangent to a plane where the slope section and the vertical section are located respectively.
6. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine according to claim 5, wherein the distance between a tangent line of a circle of the outer contour of the pressing roller and a plane of the slope section and the slope section is smaller than the length of the first inclined surface, and when the first inclined surface contacts with the pressing roller, the first inclined surface is at least partially attached to the slope section.
7. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine according to claim 5, wherein the distance between a tangent line of a circle of the outer contour of the pressing roller and a plane of the vertical section and the vertical section is smaller than the height of the vertical surface, and when the vertical surface is in contact with the pressing roller, the vertical surface is at least partially attached to the vertical section.
8. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine as claimed in claim 5, wherein a plurality of cooling pipelines are arranged on the sliding block close to the slots, and the cooling pipelines are horizontally arranged.
9. The forging die for the cylinder bottom of the hydraulic oil cylinder of the engineering machine as claimed in claim 4, wherein a second inclined surface is arranged on the upper die, the second inclined surface is located at the top end of the vertical surface, and when the upper die and the lower die are assembled, the second inclined surface is attached to the slope section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362623.XA CN113996744B (en) | 2021-11-17 | 2021-11-17 | Forging die for cylinder bottom of hydraulic oil cylinder of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362623.XA CN113996744B (en) | 2021-11-17 | 2021-11-17 | Forging die for cylinder bottom of hydraulic oil cylinder of engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113996744A true CN113996744A (en) | 2022-02-01 |
| CN113996744B CN113996744B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111362623.XA Active CN113996744B (en) | 2021-11-17 | 2021-11-17 | Forging die for cylinder bottom of hydraulic oil cylinder of engineering machinery |
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| JP2004249355A (en) * | 2003-02-21 | 2004-09-09 | Sankyo Oilless Industry Inc | Method for adjusting installation position of module cam and machining tool |
| CN1733385A (en) * | 2005-07-19 | 2006-02-15 | 兰州理工大学 | Punching-pressing composite mould |
| CN203221173U (en) * | 2013-03-11 | 2013-10-02 | 江苏省泰盛石化管件有限公司 | Linkage separating and combining type thermoplastic precision forging mould |
| CN103752701A (en) * | 2014-01-22 | 2014-04-30 | 江苏沃得植保机械有限公司 | Stamping die for six inner groove openings of starting cup in circumferential direction |
| CN211071475U (en) * | 2019-11-11 | 2020-07-24 | 辽宁新福源精密制造科技有限公司 | Digit control machine tool mould punching press mechanism |
| CN211437782U (en) * | 2019-11-08 | 2020-09-08 | 昆山一邦泰汽车零部件制造有限公司 | Side pressure forming structure of die |
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2021
- 2021-11-17 CN CN202111362623.XA patent/CN113996744B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004249355A (en) * | 2003-02-21 | 2004-09-09 | Sankyo Oilless Industry Inc | Method for adjusting installation position of module cam and machining tool |
| CN1733385A (en) * | 2005-07-19 | 2006-02-15 | 兰州理工大学 | Punching-pressing composite mould |
| CN203221173U (en) * | 2013-03-11 | 2013-10-02 | 江苏省泰盛石化管件有限公司 | Linkage separating and combining type thermoplastic precision forging mould |
| CN103752701A (en) * | 2014-01-22 | 2014-04-30 | 江苏沃得植保机械有限公司 | Stamping die for six inner groove openings of starting cup in circumferential direction |
| CN211437782U (en) * | 2019-11-08 | 2020-09-08 | 昆山一邦泰汽车零部件制造有限公司 | Side pressure forming structure of die |
| CN211071475U (en) * | 2019-11-11 | 2020-07-24 | 辽宁新福源精密制造科技有限公司 | Digit control machine tool mould punching press mechanism |
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| CN113996744B (en) | 2022-07-12 |
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