CN114406164A - Part for automobile tail door and manufacturing process thereof - Google Patents

Part for automobile tail door and manufacturing process thereof Download PDF

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Publication number
CN114406164A
CN114406164A CN202111533702.2A CN202111533702A CN114406164A CN 114406164 A CN114406164 A CN 114406164A CN 202111533702 A CN202111533702 A CN 202111533702A CN 114406164 A CN114406164 A CN 114406164A
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CN
China
Prior art keywords
head
tailgate
automobile
manufacturing process
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111533702.2A
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Chinese (zh)
Inventor
莫艺贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ming Hao Auto Metal Parts Guangzhou Co ltd
Original Assignee
Ming Hao Auto Metal Parts Guangzhou Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ming Hao Auto Metal Parts Guangzhou Co ltd filed Critical Ming Hao Auto Metal Parts Guangzhou Co ltd
Priority to CN202111533702.2A priority Critical patent/CN114406164A/en
Publication of CN114406164A publication Critical patent/CN114406164A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08Upsetting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The invention discloses a part for an automobile tail door and a manufacturing process thereof. The invention adopts the cold heading process to manufacture the flat-head-shaped part with the spline, thereby meeting the production requirement. The invention relates to the technical field of cold heading processing.

Description

Part for automobile tail door and manufacturing process thereof
Technical Field
The invention relates to a part for an automobile tail door and a manufacturing process thereof in the technical field of cold heading processing.
Background
Cold heading is a non-cutting processing technology, and is widely used in the manufacturing fields of automobiles, aviation and the like due to high working efficiency. Which by means of a die, forces the metal to plastically deform under the action of an external force, so that the volume and shape of the metal redistributes and shifts, thereby forming the desired part or blank.
In the field of automobile manufacturing, a rotating part for a tail gate baffle rotating system is generally in a head gate T-shaped frame plus spline form. Nowadays, in order to optimize the structure and improve the mechanical property of parts, the flat head, the flat hole in the head and the splined rod are designed. However, the head of the structure is flat inside and outside, the end part of the small rod is provided with a spline, and the shape difference between the head and the rod is large, so that the cold heading forming is difficult. There is a need for a cold heading process that can produce such parts.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a part for an automobile tail gate and a manufacturing process thereof, which can realize cold heading manufacturing of a flat-head part.
According to the embodiment of the first aspect of the invention, the part for the automobile tail gate comprises a head part and a rod part, wherein the head part and the rod part are of an integral structure, one end of the head part is provided with a groove, the cross section of the head part is in an oblate annular shape, and one end of the rod part is provided with the spline.
According to an embodiment of the first aspect of the present invention, further, the inner wall of the groove is provided with an arc-shaped protruding structure.
According to an embodiment of the first aspect of the invention, further, the maximum outer diameter of the stem portion is smaller than the minimum outer diameter of the head portion.
According to an embodiment of the first aspect of the invention, further, the rod part is cylindrical.
According to an embodiment of the first aspect of the invention, further, the splines are pentagonal splines.
According to a second aspect of the invention, there is provided a process for manufacturing a component for a tailgate of an automobile, comprising the steps of:
shaping the raw materials to obtain cylindrical materials;
machining the lower part of the material in a strong shrinkage machining mode to form the rod part;
carrying out cold heading processing on the upper part of the material by adopting an oblate die, and preforming the head part;
carrying out extrusion modification on the head;
pre-forming the recess and the raised formation on the end face of the head;
carrying out reverse extrusion forming on the groove;
and forming a spline on the rod shrinkage rod.
According to an embodiment of the second aspect of the invention, the material is further straightened by means of a straightening wheel.
According to an embodiment of the second aspect of the invention, further, the groove is back-extruded by a punch.
According to an embodiment of the second aspect of the invention, further, the part for the automobile tail gate is subjected to heat treatment after finishing machining.
According to the embodiment of the second aspect of the invention, the part for the automobile tail gate is further subjected to surface plating after finishing machining.
The embodiment of the invention has the beneficial effects that: the invention adopts the cold heading process to manufacture the flat-head-shaped part with the spline, thereby meeting the production requirement.
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 part for a tailgate of an automobile after step S1, in accordance with a second embodiment of the present invention;
FIG. 2 is a schematic view of a part for a tailgate of an automobile after step S2, in accordance with a second embodiment of the present invention;
FIG. 3 is a schematic view of a part for a tailgate of a vehicle in accordance with an embodiment of the second aspect of the present invention after step S3;
FIG. 4 is a schematic view of a part for a tailgate of a vehicle in accordance with an embodiment of the second aspect of the present invention after step S4;
FIG. 5 is a schematic view of parts for a tailgate of a vehicle, after step S5, in accordance with a second embodiment of the present invention;
FIG. 6 is a schematic view of a part for a tailgate of a vehicle in accordance with an embodiment of the second aspect of the present invention after step S6;
fig. 7 is a schematic view of parts for a tailgate of an automobile in accordance with an embodiment of the second aspect of the present invention after step S7.
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 part for the automobile tail gate in the first embodiment of the present invention includes a head portion 1 and a rod portion 2. The head part 1 and the rod part 2 are of an integral structure, and one end of the head part 1 is provided with a groove 11. The head 1 has an oblate ring shape when viewed from the cross section of the head 1. One end of the rod part 2 is also provided with splines 21.
Furthermore, the inner wall of the groove 11 is provided with an arc-shaped protruding structure 111 which protrudes towards the inside of the groove 11 to play a role in limiting.
Further, the maximum outer diameter of the stem 2 is smaller than the minimum outer diameter of the head 1, and the head 1 protrudes from the stem 2.
Further, the rod part 2 is cylindrical and the spline 21 is a pentagonal spline, so that the rod part is convenient to be matched with the round hole.
In a second embodiment of the invention, the steps for manufacturing the part for the automobile tail gate are as follows:
s1, referring to FIG. 1, shaping the raw materials to obtain cylindrical materials. Specifically, a cylindrical raw material is straightened by a straightening wheel, and then a required material length is cut out to be used as a processing blank.
S2, referring to fig. 2, a lower part of the material is processed into a rod part 2 by adopting a strong shrinkage processing mode. The processing of contracting by force indicates through carrying out the side direction extrusion to the body of rod for the body of rod external diameter reduces and can promote body of rod structure density.
And S3, referring to FIG. 3, performing cold heading processing on the upper part of the material by using a flat round die to perform a head part 1, and preparing for subsequent extrusion and modification.
S4, referring to FIG. 4, the head 1 is subjected to extrusion modification to obtain the outer contour of the head 1.
S5, referring to FIG. 5, a groove 11 and a protruding structure 111 are preformed on the end face of the head 1, and chamfers are arranged on the edges of the groove 11, so that a part can be attached to a mold during subsequent extrusion, and the part is full and meets design requirements.
S6, referring to FIG. 6, the groove 11 is subjected to reverse extrusion forming. Specifically, by pressing the inside of the groove 11 using the plunger, the overflowing fluid may extend in the reverse direction along the outer wall of the plunger, thereby implementing the backward pressing process.
S7, referring to FIG. 7, the rod part 2 is contracted to form a spline 21, and cold heading processing of the part is completed.
Furthermore, after the part is machined, the part is subjected to heat treatment, so that the mechanical property of the part is improved.
Furthermore, after the part is machined, the surface of the part is subjected to electroplating treatment, so that the corrosion resistance of the part is enhanced.
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. A part for a tailgate of an automobile, comprising: head (1) and pole portion (2), head (1) with pole portion (2) structure as an organic whole, the one end of head (1) is equipped with recess (11), the cross-section of head (1) is oblate annular, the one end of pole portion (2) is equipped with spline (21).
2. The part for a tailgate for a vehicle, according to claim 1, characterized in that: the inner wall of the groove (11) is provided with an arc-shaped protruding structure (111).
3. The part for a tailgate for a vehicle, according to claim 1, characterized in that: the maximum outer diameter of the rod part (2) is smaller than the minimum outer diameter of the head part (1).
4. The part for a tailgate for a vehicle, according to claim 1, characterized in that: the rod part (2) is cylindrical.
5. The part for a tailgate for a vehicle, according to claim 1, characterized in that: the spline (21) is a pentagonal spline.
6. A manufacturing process of a part for an automobile tail gate is characterized by comprising the following steps:
shaping the raw materials to obtain cylindrical materials;
machining the lower part of the material in a strongly-shrinking machining mode to form the rod part (2);
carrying out cold heading processing on the upper part of the material by adopting an oblate die to perform the head part (1);
carrying out extrusion modification on the head (1);
preforming the recess (11) and the raised structure (111) on the end face of the head (1);
carrying out reverse extrusion forming on the groove (11);
and the spline (21) is formed by shrinking the rod part (2).
7. The manufacturing process of a part for an automobile tailgate according to claim 6, characterized in that: the material is straightened by a straightening wheel.
8. The manufacturing process of a part for an automobile tailgate according to claim 6, characterized in that: the groove (11) is formed by reverse extrusion through a punching rod.
9. The manufacturing process of a part for an automobile tailgate according to claim 6, characterized in that: and carrying out heat treatment on the part for the automobile tail gate after the manufacture is finished.
10. The manufacturing process of a part for an automobile tailgate according to claim 6, characterized in that: and after the manufacture is finished, carrying out surface electroplating on the part for the automobile tail gate.
CN202111533702.2A 2021-12-15 2021-12-15 Part for automobile tail door and manufacturing process thereof Pending CN114406164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111533702.2A CN114406164A (en) 2021-12-15 2021-12-15 Part for automobile tail door and manufacturing process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111533702.2A CN114406164A (en) 2021-12-15 2021-12-15 Part for automobile tail door and manufacturing process thereof

Publications (1)

Publication Number Publication Date
CN114406164A true CN114406164A (en) 2022-04-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111533702.2A Pending CN114406164A (en) 2021-12-15 2021-12-15 Part for automobile tail door and manufacturing process thereof

Country Status (1)

Country Link
CN (1) CN114406164A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947567A (en) * 2010-08-31 2011-01-19 瑞安市瑞强标准件有限公司 Processing technique and processing device of flat-head hexagon bolt for cold extrusion shaping cart
CN102689132A (en) * 2012-06-11 2012-09-26 江苏森威精锻有限公司 Method for improving jumping of rod part of inner spline shaft type forged piece
CN105268883A (en) * 2014-07-02 2016-01-27 西安航空动力股份有限公司 Cast blade upset head blanking forming piece
CN207847278U (en) * 2018-02-07 2018-09-11 张家港市公安消防大队 Lock core sleeve
US20190193138A1 (en) * 2016-10-11 2019-06-27 Yang Hwa Lee Method for manufacturing universal joint using pipe
CN110153363A (en) * 2019-06-24 2019-08-23 郑州机械研究所有限公司 A kind of manufacturing process for turning to the cold and hot forging of guide rod and combining
CN111623021A (en) * 2019-02-28 2020-09-04 长城汽车股份有限公司 Adjusting bolt and vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947567A (en) * 2010-08-31 2011-01-19 瑞安市瑞强标准件有限公司 Processing technique and processing device of flat-head hexagon bolt for cold extrusion shaping cart
CN102689132A (en) * 2012-06-11 2012-09-26 江苏森威精锻有限公司 Method for improving jumping of rod part of inner spline shaft type forged piece
CN105268883A (en) * 2014-07-02 2016-01-27 西安航空动力股份有限公司 Cast blade upset head blanking forming piece
US20190193138A1 (en) * 2016-10-11 2019-06-27 Yang Hwa Lee Method for manufacturing universal joint using pipe
CN207847278U (en) * 2018-02-07 2018-09-11 张家港市公安消防大队 Lock core sleeve
CN111623021A (en) * 2019-02-28 2020-09-04 长城汽车股份有限公司 Adjusting bolt and vehicle
CN110153363A (en) * 2019-06-24 2019-08-23 郑州机械研究所有限公司 A kind of manufacturing process for turning to the cold and hot forging of guide rod and combining

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Application publication date: 20220429

RJ01 Rejection of invention patent application after publication