CN114406166A - Square rod with circular flange and manufacturing method thereof - Google Patents
Square rod with circular flange and manufacturing method thereof Download PDFInfo
- Publication number
- CN114406166A CN114406166A CN202111675900.2A CN202111675900A CN114406166A CN 114406166 A CN114406166 A CN 114406166A CN 202111675900 A CN202111675900 A CN 202111675900A CN 114406166 A CN114406166 A CN 114406166A
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- Prior art keywords
- flange
- rod
- square
- blank
- hole
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 22
- 238000004080 punching Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
- B21J5/08—Upsetting
-
- 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
-
- 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
- B21J13/08—Accessories for handling work or tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a square rod with a circular flange and a manufacturing method thereof. According to the invention, the round flange is directly formed by cold heading and stamping the end part of the square rod, the rod part and the flange are of an integrated structure, the structural strength is ensured, and the production efficiency is higher compared with that of a traditional processing mode. The invention relates to the technical field of metal forging.
Description
Technical Field
The invention relates to a square rod with a circular flange and a manufacturing method thereof in the technical field of metal forging.
Background
The rod part of the chassis flange used in the automobile industry at present is cylindrical, the contact area of the side surface of the rod part is small, a plate which is in contact with the rod part after welding is easy to deform, the welding point is concentrated, and the bearing capacity of the plate is small. Therefore, if the rod part is designed into a square rod, the contact area between the rod part and the plate rib can be increased, and the welding strength is improved.
However, the rod part is a square rod, the end part still keeps a round flange, the forming difficulty is high, the structural strength is ensured due to the need, the rod part and the end part are of an integrated structure, the time consumption is long if the vehicle pin process is adopted for processing, the batch production is not facilitated, and the production efficiency is difficult to improve.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a square rod with a circular flange and a manufacturing method thereof, which can process a workpiece with a square rod part and a circular flange end part and have high production efficiency.
According to an embodiment of the first aspect of the present invention, a square rod with a circular flange is provided, which includes a rod portion and a flange, wherein the rod portion is in a prism shape, the flange is in a cylindrical shape, and the flange is disposed at one end of the rod portion and is in an integrated structure with the rod portion.
According to an embodiment of the first aspect of the present invention, further, the square rod with the circular flange further includes a blind hole, and the blind hole penetrates through the flange and extends into the rod.
According to an embodiment of the first aspect of the present invention, further, the blind hole is a threaded hole.
According to an embodiment of the first aspect of the present invention, further, the end face of the flange is provided with a welding rod.
According to an embodiment of the first aspect of the present invention, further, the welding rod is arc-shaped and disposed around an axis of the flange.
According to an embodiment of the first aspect of the present invention, further, the number of the welding rods is at least two, and the welding rods are distributed on the flange end face at equal intervals.
According to a second aspect of the present invention, there is provided a method for manufacturing a square bar with a circular flange, comprising:
cutting the stock to obtain a blank;
shaping chamfers at two ends of the blank;
cold heading the flange of the end face of the blank;
punching a positioning hole on the end face of the flange;
forming the welding rod on the end face of the flange;
back-extruding the blind hole along the positioning hole;
and turning internal threads along the blind hole to obtain the square rod with the circular flange.
According to the embodiment of the second aspect of the invention, further, the square rod with the circular flange is obtained and then is subjected to heat treatment.
According to the embodiment of the second aspect of the invention, further, the manufacturing method of the square rod with the circular flange adopts a cold heading die, the cold heading die comprises an upper die, a lower die, an upper die ejector rod and a lower die ejector rod, the upper die is provided with a through hole and a punching space, the punching space is cylindrical, the through hole penetrates through the punching space, and the end part of the blank is accommodated in the punching space; the lower die is provided with a limiting hole which is square, and the lower die is sleeved on the outer side of the blank and attached to the upper die; the upper die ejector rod and the lower die ejector rod can be close to each other, the upper die ejector rod penetrates through the through hole and then is abutted to one end of the blank, and the lower die ejector rod is abutted to the other end of the blank.
According to an embodiment of the second aspect of the invention, further, the inner wall of the stamping space is provided with rounded corners.
The embodiment of the invention has the beneficial effects that: according to the invention, the round flange is directly formed by cold heading and stamping the end part of the square rod, the rod part and the flange are of an integrated structure, the structural strength is ensured, and the production efficiency is higher compared with that of a traditional processing mode.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S1;
FIG. 2 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S2;
FIG. 3 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S3;
FIG. 4 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S4;
FIG. 5 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S5;
FIG. 6 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S6;
FIG. 7 is a schematic view of a flange member in an embodiment of the second aspect of the present invention after step S7;
FIG. 8 is a structural view of a cold-heading die employed in an embodiment of the second aspect of the invention;
fig. 9 is a structural view of an upper die and a lower die in an embodiment of the second aspect of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 7, the square rod with a circular flange in the first embodiment of the present invention includes a rod portion 1 and a flange 2, where the rod portion 1 is prism-shaped, specifically quadrangular prism-shaped; the flange 2 is cylindrical. The flange 2 is arranged at one end of the rod part 1 and is of an integrated structure with the rod part 1.
Further, this square pole still is equipped with blind hole 3, and it runs through to pole portion 1 inside from the one end of flange 2. In particular, the blind hole 3 is a threaded hole for fitting with other parts.
Further, the end face of the flange 2 is provided with a welding rod 21 which protrudes outward for welding with other parts.
Further, the welding rod 21 is arc-shaped and is circumferentially arranged around the axis of the flange 2, so that the welding rod is attached to the shape of the flange 2 as much as possible, and the stress is more uniform after welding.
Further, the number of the welding rods 21 is at least two, and the welding rods 21 are distributed on the end face of the flange 2 at equal intervals, so that the stress is more uniform after welding.
The manufacturing method of the square rod with the circular flange in the second aspect embodiment of the invention comprises the following steps:
s1, referring to FIG. 1, selecting a square material, straightening the material by using a straightening wheel, and cutting the material according to a required length to obtain a blank 4;
s2, referring to FIG. 2, shaping chamfers 41 at two ends of the blank 4, so that burrs are reduced during subsequent stamping;
s3, referring to FIG. 3, cold heading a flange 2 on the end face of a blank 4;
s4, referring to FIG. 4, punching a positioning hole 42 on the end face of the flange 2 to provide position reference for subsequent inner hole punching;
s5, referring to FIG. 5, shaping the flange 2, and forming a welding rod 21 on the end face of the flange 2;
s6, referring to FIG. 6, extruding the blind holes 3 along the positioning holes 42;
s7, referring to FIG. 7, a CNC pin turning machine tool is used for turning internal threads of the pin along the blind hole 3, and a square rod with a circular flange is obtained.
Further, the square rod with the circular flange is subjected to heat treatment after being obtained, so that the requirement of the thread grade is met.
Further, referring to fig. 8, in step S3 of the manufacturing method, a cold-heading die 5 including an upper die 51, a lower die 52, an upper die ejector pin 53, and a lower die ejector pin 54 is used. Referring to fig. 9, the upper die 51 is provided with a through hole 511 and a punching space 512, the punching space 512 has a cylindrical shape, and the end of the blank 4 is accommodated in the punching space 512 to limit the shape of the flange 2 formed as a die cavity at the time of cold heading punching. The through hole 511 penetrates into the press space 512, and the upper die lift pin 53 can pass through the through hole 511 and come into contact with the end of the blank 4. The lower die 52 is provided with a limiting hole 521 which is square and matched with the blank 4. In the cold heading and stamping process, the lower die 52 is sleeved on the outer side of the blank 4, and the upper die 51 and the lower die 52 can be attached to each other. The lower die lift pins 54 abut against the blank 4, and the upper die lift pins 53 and the lower die lift pins 54 can be driven by power equipment to approach each other, so that both ends of the blank 4 are urged, the end portion of the blank 4 is extruded and deformed in the press space 512, and the flange 2 is finally formed.
Further, the inner wall of the stamping space 512 is also provided with a round angle 5121, so that the stress concentration of the edge of the stamping space in the process of forming the flange 2 is reduced.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (10)
1. The utility model provides a take square pole of circular flange which characterized in that includes: the rod part (1) is prismatic, the flange (2) is cylindrical, and the flange (2) is arranged at one end of the rod part (1) and is in an integrated structure with the rod part (1).
2. The round flanged square pole of claim 1, wherein: the square rod with the circular flange further comprises a blind hole (3), and the blind hole (3) penetrates through the flange (2) and extends into the rod part (1).
3. The round flanged square pole of claim 2, wherein: the blind hole (3) is a threaded hole.
4. The round flanged square pole of claim 1, wherein: and welding rods (21) are arranged on the end faces of the flanges (2).
5. The round flanged square pole of claim 4, wherein: the welding rod (21) is arc-shaped and is arranged around the axis of the flange (2) in the circumferential direction.
6. The round flanged square pole of claim 5, wherein: the number of the welding rods (21) is at least two, and the welding rods (21) are distributed on the end face of the flange (2) at equal intervals.
7. A manufacturing method of a square rod with a circular flange is characterized by comprising the following steps:
cutting the material to obtain a blank (4);
shaping chamfers (41) at two ends of the blank (4);
the flange (2) of the end face of the blank (4) is subjected to cold heading;
punching a positioning hole (42) on the end face of the flange (2);
forming the welding rod (21) on the end face of the flange (2);
back-extruding the blind hole (3) along the positioning hole (42);
and (4) turning internal threads along the blind hole (3) to obtain the square rod with the circular flange.
8. The method for manufacturing a square pole with a circular flange according to claim 7, wherein: and carrying out heat treatment on the obtained square rod with the circular flange.
9. The method for manufacturing a square pole with a circular flange according to claim 7, wherein: the manufacturing method of the square rod with the circular flange adopts a cold-heading die (5), the cold-heading die (5) comprises an upper die (51), a lower die (52), an upper die ejector rod (53) and a lower die ejector rod (54), the upper die (51) is provided with a through hole (511) and a stamping space (512), the stamping space (512) is cylindrical, the through hole (511) penetrates through the stamping space (512), and the end part of the blank (4) is accommodated in the stamping space (512); the lower die (52) is provided with a limiting hole (521), the limiting hole (521) is square, and the lower die (52) is sleeved on the outer side of the blank (4) and attached to the upper die (51); the upper die ejector rod (53) and the lower die ejector rod (54) can be close to each other, the upper die ejector rod (53) penetrates through the through hole (511) and then abuts against one end of the blank (4), and the lower die ejector rod (54) abuts against the other end of the blank (4).
10. The method for manufacturing a square pole with a circular flange according to claim 9, wherein: the inner wall of the stamping space (512) is provided with a round angle (5121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111675900.2A CN114406166B (en) | 2021-12-31 | 2021-12-31 | Square rod with round flange and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111675900.2A CN114406166B (en) | 2021-12-31 | 2021-12-31 | Square rod with round flange and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114406166A true CN114406166A (en) | 2022-04-29 |
| CN114406166B CN114406166B (en) | 2024-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111675900.2A Active CN114406166B (en) | 2021-12-31 | 2021-12-31 | Square rod with round flange and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114406166B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136909A (en) * | 2004-11-11 | 2006-06-01 | Toyoshima Seisakusho:Kk | Method for manufacturing bar shape member |
| CN104841792A (en) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | Molding process of reverse cylinder workpiece having flange at end |
| CN205032636U (en) * | 2015-09-17 | 2016-02-17 | 宾科汽车紧固件（昆山）有限公司 | Panel welded nut cold -heading device |
| KR20180029300A (en) * | 2016-09-12 | 2018-03-21 | (주) 호창엠에프 | Method for manufacturing long hollow type drive shaft through cold forging precess |
| CN207414259U (en) * | 2017-11-23 | 2018-05-29 | 烟台博昌汽车标准件有限公司 | A kind of four directions plug cock cold headers punching press frock |
| CN108266446A (en) * | 2018-02-06 | 2018-07-10 | 宾科汽车紧固件（昆山）有限公司 | Waterproof riveting nut and its production technology |
| CN109551180A (en) * | 2018-11-29 | 2019-04-02 | 上海鸿基金属制品有限公司 | A kind of processing technology of threaded long casing |
| CN208895095U (en) * | 2018-08-22 | 2019-05-24 | 湖南中航紧固***有限公司 | Oil pipe bolt cold-heading molding mould |
| CN212840056U (en) * | 2020-08-11 | 2021-03-30 | 博思特能源装备（天津）股份有限公司 | Flange type temperature-variable conical sleeve |
-
2021
- 2021-12-31 CN CN202111675900.2A patent/CN114406166B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136909A (en) * | 2004-11-11 | 2006-06-01 | Toyoshima Seisakusho:Kk | Method for manufacturing bar shape member |
| CN104841792A (en) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | Molding process of reverse cylinder workpiece having flange at end |
| CN205032636U (en) * | 2015-09-17 | 2016-02-17 | 宾科汽车紧固件（昆山）有限公司 | Panel welded nut cold -heading device |
| KR20180029300A (en) * | 2016-09-12 | 2018-03-21 | (주) 호창엠에프 | Method for manufacturing long hollow type drive shaft through cold forging precess |
| CN207414259U (en) * | 2017-11-23 | 2018-05-29 | 烟台博昌汽车标准件有限公司 | A kind of four directions plug cock cold headers punching press frock |
| CN108266446A (en) * | 2018-02-06 | 2018-07-10 | 宾科汽车紧固件（昆山）有限公司 | Waterproof riveting nut and its production technology |
| CN208895095U (en) * | 2018-08-22 | 2019-05-24 | 湖南中航紧固***有限公司 | Oil pipe bolt cold-heading molding mould |
| CN109551180A (en) * | 2018-11-29 | 2019-04-02 | 上海鸿基金属制品有限公司 | A kind of processing technology of threaded long casing |
| CN212840056U (en) * | 2020-08-11 | 2021-03-30 | 博思特能源装备（天津）股份有限公司 | Flange type temperature-variable conical sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114406166B (en) | 2024-03-12 |
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