CN218395479U - Hot extrusion preforming tool and forming tool for wheel rim supporting shaft blank - Google Patents
Hot extrusion preforming tool and forming tool for wheel rim supporting shaft blank Download PDFInfo
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- CN218395479U CN218395479U CN202221976251.XU CN202221976251U CN218395479U CN 218395479 U CN218395479 U CN 218395479U CN 202221976251 U CN202221976251 U CN 202221976251U CN 218395479 U CN218395479 U CN 218395479U
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Abstract
The utility model discloses a hot extrusion preforming frock and shaping frock of wheel limit supporting axle blank relates to hot extrusion die technical field, specifically is a hot extrusion preforming frock of wheel limit supporting axle blank, its characterized in that: the punching die comprises a punching head connecting body, a die holder and a lower ejector rod, wherein the lower end of the punching head connecting body is fixedly connected with a pressing head, the outer side wall of the pressing head is fixedly connected with a first pressing ring, and the lower end of the pressing head is fixedly provided with a first bulge; the movable die participates in extrusion work, so that the blank is full in bulge and edge parts and free of corner collapse, the blank is subjected to one-step forming on the bulge and edge parts, the generation of folding defects is avoided, the product yield is greatly improved, the production cost is reduced, and the product quality is further improved; meanwhile, the top platform and the second protrusions on the lower ejector rod directly participate in forming of inner holes of the small ends of the blanks, machining allowance of the blanks is reduced, and metal materials are saved.
Description
Technical Field
The utility model relates to a hot extrusion die technical field specifically is a hot extrusion preforming frock and shaping frock of wheel limit supporting axle blank.
Background
The wheel edge supporting shaft product is an important part of engineering machinery and mine car products, and is a large flange variable cross-section two-end hollow die forging product (the blank shape is shown in attached figure 3 in the specification). Due to the limitation of the shape and structure of a large flange and a thin small end wall of a product, a blank needs to be produced on a press with larger tonnage when being subjected to hot extrusion forming. Because the diameter of the flange plate is too large and the length of the flange at the upper part is longer, the blank of the flange plate is very easy to generate serious defects of underfilling, folding and the like in the hot extrusion process, the product quality is unstable, and the yield is low. Therefore, the technical problems of insufficient pressure, insufficient product filling, folding and the like exist in the production of wheel edge supporting shaft blanks on the common press in the prior art.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a hot extrusion preforming frock and shaping frock of wheel limit supporting axle blank has solved the problem of proposing among the above-mentioned background art.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a hot extrusion preforming frock of wheel limit supporting axle blank which characterized in that: the punching die comprises a punching head connector, a die holder and a lower ejector rod, wherein the lower end of the punching head connector is fixedly connected with a pressing head, the outer side wall of the pressing head is fixedly connected with a first pressing ring, and a first bulge is fixedly arranged at the lower end of the pressing head; the die holder sets up the below at first clamping ring, be provided with the die mould lower mould in the die holder, the first extrusion chamber that link up from top to bottom is seted up to the inside of die mould lower mould, the pressure head can stretch into downwards the upper end opening in extrusion chamber, the upper end fixedly connected with top platform of ejector pin down, the top of top platform is fixed to be provided with the second arch, and the lower extreme opening in first extrusion chamber stretches into on the top platform.
Optionally, the upper end of the punch connector is in threaded connection with an upper die plate, and the lower side of the upper die plate is in threaded connection with a plurality of piston rods.
Optionally, a hole is formed in the bottom wall of the die holder, and the lower ejector rod penetrates through the bottom wall of the die holder through the hole.
The utility model provides a hot extrusion moulding frock of wheel limit supporting axle blank which characterized in that: the punching head comprises a punching head connector, a second pressing ring and a lower ejector rod, wherein the lower end of the punching head connector is fixedly connected with a deep punching head, the diameter of the lower cross section of the deep punching head is smaller than that of the upper cross section, the outer side wall of the upper part of the deep punching head is fixedly connected with a movable die, and the lower part of the movable die is in a convex shape; the second compression ring is arranged below the upper die plate, the die holder is fixedly connected with the lower portion of the second compression ring, a forming lower die is arranged in the die holder, a second extrusion cavity which is communicated from top to bottom is formed in the forming lower die, a lower ejector rod is arranged in the second extrusion cavity of the forming lower die, the upper end of the lower ejector rod is fixedly connected with an ejecting table, and a second protrusion is fixedly arranged above the ejecting table.
Optionally, the upper end of the punch connector is in threaded connection with an upper die plate, and the lower side of the upper die plate is in threaded connection with a plurality of piston rods.
Optionally, a hole is formed in the bottom wall of the die holder, and the lower ejector rod penetrates through the bottom wall of the die holder through the hole.
(III) advantageous effects
The utility model provides a hot extrusion preforming frock and shaping frock of wheel limit supporting axle blank possesses following beneficial effect:
according to the hot extrusion preforming tool and the forming tool for the wheel rim supporting shaft blank, the blank is preformed to form a profiled blank through the hot extrusion preforming tool, then the profiled blank is extruded into the formed blank through the hot extrusion forming tool, in the process, the extrusion work is participated by the movable die, so that the protruding part and the edge part on the blank are full and have no corner collapse, the protruding part and the edge part on the blank are formed at one time, the generation of folding defects is avoided, the product yield is greatly improved, the production cost is reduced, and the product quality is further improved; meanwhile, the top platform and the second protrusions on the lower ejector rod directly participate in forming of inner holes of the small ends of the blanks, machining allowance of the blanks is reduced, and metal materials are saved.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a hot extrusion preforming tool for a wheel rim supporting shaft blank according to the present invention;
fig. 2 is a schematic cross-sectional structural view of the hot extrusion molding tool for the wheel rim supporting shaft blank according to the present invention;
fig. 3 is a schematic view of the sectional structure of the forming blank of the present invention.
In the figure: 1. a punch head connector; 2. mounting a template; 3. a piston rod; 4. a pressure head; 5. a first pressure ring; 6. profiling the lower die; 7. a die holder; 8. a lower ejector rod; 9. profiling a blank; 10. a deep punch; 11. a second pressure ring; 12. moving the mold; 13. forming a blank; 14. and (5) forming the lower die.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a hot extrusion preforming frock of wheel limit supporting axle blank, includes drift connector 1, die holder 7 and lower ejector pin 8, and the upper end threaded connection of drift connector 1 has cope match-plate pattern 2, and the below threaded connection of cope match-plate pattern 2 has a plurality of piston rods 3, and piston rod 3 belongs to the piston rod on the pneumatic cylinder, and the cylinder end (the one end of keeping away from the piston rod) of pneumatic cylinder is connected with the underframe of press (not shown in the figure). The lower extreme fixedly connected with pressure head 4 of drift connector 1, the first clamping ring of fixedly connected with 5 on the lateral wall of pressure head 4, the fixed first arch that is provided with of lower extreme of pressure head 4.
Wherein, the die holder 7 sets up in the below of first clamping ring 5, and the hole has been seted up to the diapire of die holder 7, is provided with die mould lower mould 6 in the die holder 7, and first extrusion chamber has been seted up to die mould lower mould 6 inside, and the both ends of die mould lower mould 6 can be through first extrusion chamber intercommunication, and the first extrusion intracavity of die mould lower mould 6 is provided with down ejector pin 8, and the upper end fixedly connected with top board of lower ejector pin 8, the top board top is fixed and is provided with the second arch, and lower ejector pin 8 runs through the diapire of die holder 7 through the hole.
The central line of the pressure head 4 is the same as that of the first extrusion cavity, and the specification parameters are mutually matched, so that the blank can be effectively prevented from overflowing under high pressure; the central lines of the top platform and the second bulge are the same as the central line of the first extrusion cavity, and the specification parameters of the top platform and the first extrusion cavity are mutually matched, so that the blank can be effectively prevented from overflowing under high pressure.
When the pressing die is used, a blank is placed into the pressing lower die 6, then the upper die plate 2, the punch connector 1, the pressing head 4 and the first pressing ring 5 are integrally pressed down by utilizing the pressure of the pressing machine and the hydraulic cylinder (wherein the length of the punch connector 1 is set according to the stroke of the pressing machine), and the hydraulic cylinder is used for assisting the pressing machine to further push the pressing head 4 to move downwards so as to form the upper part of the blank (namely the shape of the upper part of the pressing blank 9). The first pressing ring 5 is used for fixing the profiling lower die 6 on the die holder 7; meanwhile, a lower ejector rod 8 is arranged in a first extrusion cavity of the compression lower die 6, the upper end of the lower ejector rod 8 is fixedly connected with an ejector platform, and a second bulge is fixedly arranged above the ejector platform, so that pre-forming of the inner hole at the small end of the blank (namely the shape of the lower part of the compression blank 9) is completed through arrangement of the lower ejector rod 8, the ejector platform and the second bulge.
Referring to fig. 2 and 3, the present invention provides a technical solution: the utility model provides a hot extrusion moulding frock of wheel limit supporting axle blank, includes drift connector 1, second clamping ring 11 and lower ejector pin 8, and the upper end threaded connection of drift connector 1 has cope match-plate pattern 2, and the below threaded connection of cope match-plate pattern 2 has a plurality of piston rods 3, and piston rod 3 belongs to the piston rod on the pneumatic cylinder, and the cylinder end (the one end of keeping away from the piston rod) of pneumatic cylinder is connected with the underframe of press (not show in the figure). The lower end of the punch connector 1 is fixedly connected with a deep punch 10, the diameter of the cross section of the lower part of the deep punch 10 is smaller than that of the cross section of the upper part, the outer side wall of the upper part of the deep punch 10 is fixedly connected with a movable die 12, and the lower part of the movable die 12 is in a convex shape.
Wherein, second clamping ring 11 sets up the below of cope match-plate pattern 2, the below fixedly connected with die holder 7 of second clamping ring 11, the hole has been seted up to the diapire of die holder 7, be provided with shaping lower mould 14 in the die holder 7, second extrusion chamber has been seted up to shaping lower mould 14's inside, and the both ends of shaping lower mould 14 can be through second extrusion chamber intercommunication, the second extrusion intracavity of die pressing lower mould 6 is provided with down ejector pin 8, the upper end fixedly connected with top board of lower ejector pin 8, it is protruding that the top board top is fixed to be provided with the second, lower ejector pin 8 runs through the diapire of die holder 7 through the hole.
The central line of the deep punch 10 is the same as that of the second extrusion cavity, and specification parameters are mutually matched, so that the blank can be effectively prevented from overflowing under high pressure; the central lines of the top platform and the second protrusion are the same as the central line of the second extrusion cavity, and the specification parameters of the top platform and the second extrusion cavity are mutually matched, so that the blank can be effectively prevented from overflowing under high pressure.
When in use, the profiled blank 9 is placed into the lower forming die 14, the profiled blank 9 is positioned above the top table, and the small end of the profiled blank 9 is sleeved on the second protrusion; then, the upper die plate 2, the punch connector 1, the deep punch 10 and the movable die 12 are pressed down integrally by using the pressure of the press and the hydraulic cylinder (wherein, the length of the punch connector 1 is set according to the stroke of the press), the hydraulic cylinder is used for assisting the press to further push the press head 4 to move downwards, the deep punch 10 penetrates into the press blank 9 from top to bottom under the pressure (under the action of the deep punch 10 and the forming lower die 14, the press blank 9 is deformed, the press blank 9 fills a second extrusion cavity in the forming lower die 14), meanwhile, the press blank 9 cannot overflow under high pressure due to the fact that the movable die 12 presses and covers the second extrusion cavity in the forming lower die 14, the lower part of the movable die 12 is convex, the movable die 12 participates in extrusion work, so that the upper convex part and the edge part of the blank are full and have no corner collapse, and the upper convex part and the edge part of the blank are formed at one time (the blank 9 is deformed into a formed blank 13 after extrusion, that the blank is deformed into a formed blank 13 from the formed blank 13 shown in fig. 2 shown in fig. 1, and fig. 3 is a sectional view of the formed blank 13.
After the blank passes through a hot extrusion preforming tool (namely, after the hot extrusion tool preforming process), the wheel edge supporting shaft blank becomes a profiled blank 9, then the profiled blank 9 is taken out to be subjected to a hot extrusion forming tool (namely, after the hot extrusion tool forming process), and after the hot extrusion tool forming process, the profiled blank 9 is deformed into a formed blank 13.
The utility model discloses a theory of operation and beneficial effect: the blank is preformed to form a profiled blank 9 through the arrangement of a hot extrusion preforming tool, then the profiled blank is extruded to form a formed blank through the hot extrusion forming tool, in the process, the movable die 12 participates in the extrusion work, so that the protruding part and the edge part of the blank are full and have no corner collapse, the protruding part and the edge part of the blank are formed at one time, the generation of folding defects is avoided, the product yield is greatly improved, the production cost is reduced, and the product quality is further improved; meanwhile, the top platform and the second bulge which are positioned on the lower ejector rod 8 directly participate in the forming of the inner hole of the small end of the blank, the machining allowance of the blank is reduced, and metal materials are saved.
Above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a hot extrusion preforming frock of wheel limit supporting axle blank which characterized in that: the punching die comprises a punching head connector (1), a die holder (7) and a lower ejector rod (8), wherein the lower end of the punching head connector (1) is fixedly connected with a pressing head (4), the outer side wall of the pressing head (4) is fixedly connected with a first pressing ring (5), and a first bulge is fixedly arranged at the lower end of the pressing head (4); the die holder (7) is arranged below the first pressing ring (5), a pressing lower die (6) is arranged in the die holder (7), a first extrusion cavity which is communicated with the die holder lower die (6) is formed in the pressing lower die, the pressing head (4) can stretch into the upper end opening of the extrusion cavity, the upper end fixedly connected with top platform of the lower ejector rod (8), the second protrusion is fixedly arranged above the top platform, and the lower end opening of the first extrusion cavity stretches into the top platform.
2. The hot-extrusion preforming tool for wheel rim support shaft blank according to claim 1, characterized in that: the upper end of the punch connector (1) is in threaded connection with an upper template (2), and the lower part of the upper template (2) is in threaded connection with a plurality of piston rods (3).
3. The hot-extrusion preforming tool for wheel rim support shaft blank according to claim 1, characterized in that: the bottom wall of the die holder (7) is provided with a hole, and the lower ejector rod (8) penetrates through the bottom wall of the die holder (7) through the hole.
4. The utility model provides a hot extrusion moulding frock of wheel limit supporting axle blank which characterized in that: the punching head structure comprises a punching head connector (1), a second pressing ring (11) and a lower ejector rod (8), wherein the lower end of the punching head connector (1) is fixedly connected with a deep punching head (10), the diameter of the cross section of the lower part of the deep punching head (10) is smaller than that of the cross section of the upper part of the deep punching head, the outer side wall of the upper part of the deep punching head (10) is fixedly connected with a movable die (12), and the lower part of the movable die (12) is in a convex shape; second clamping ring (11) sets up the below in cope match-plate pattern (2), the below fixedly connected with die holder (7) of second clamping ring (11), be provided with shaping lower mould (14) in die holder (7), the second extrusion chamber that link up from top to bottom is seted up to the inside of shaping lower mould (14), the second extrusion intracavity of shaping lower mould (14) is provided with down ejector pin (8), the upper end fixedly connected with top board of ejector pin (8) down, it is protruding to be provided with the second above the top board fixedly.
5. The hot extrusion forming tool for the wheel rim supporting shaft blank according to claim 4, wherein: the upper end of the punch connector (1) is in threaded connection with an upper template (2), and a plurality of piston rods (3) are in threaded connection with the lower portion of the upper template (2).
6. The tool for hot extrusion molding of a wheel rim support shaft blank according to claim 4, wherein: the bottom wall of the die holder (7) is provided with a hole, and the lower ejector rod (8) penetrates through the bottom wall of the die holder (7) through the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976251.XU CN218395479U (en) | 2022-07-29 | 2022-07-29 | Hot extrusion preforming tool and forming tool for wheel rim supporting shaft blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976251.XU CN218395479U (en) | 2022-07-29 | 2022-07-29 | Hot extrusion preforming tool and forming tool for wheel rim supporting shaft blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218395479U true CN218395479U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221976251.XU Active CN218395479U (en) | 2022-07-29 | 2022-07-29 | Hot extrusion preforming tool and forming tool for wheel rim supporting shaft blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218395479U (en) |
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2022
- 2022-07-29 CN CN202221976251.XU patent/CN218395479U/en active Active
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