CN112439865A - Forming method of universal joint - Google Patents
Forming method of universal joint Download PDFInfo
- Publication number
- CN112439865A CN112439865A CN202011620307.3A CN202011620307A CN112439865A CN 112439865 A CN112439865 A CN 112439865A CN 202011620307 A CN202011620307 A CN 202011620307A CN 112439865 A CN112439865 A CN 112439865A
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- Prior art keywords
- square
- universal joint
- cutting
- forming method
- shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forming method of a universal joint, which comprises the working procedures of shaping and edge binding, shrinking, lug cutting, flattening and the like.
Description
Technical Field
The invention relates to the field of production of mechanical parts by adopting a cold extrusion molding process, in particular to a molding method of a universal joint.
Background
The universal joint is a commonly used tool, at present, the universal joint is manufactured by generally adopting a turning, planing and milling mode or a pouring and forming mode, the profile is low in density in the pouring and forming mode, the whole quality is poor, the procedures are multiple in the turning, planing and milling mode, the processing difficulty of ear cutting and a square structure is high, the efficiency is low, the raw material waste is great by using the traditional turning, planing and milling processing means, and the cost is high.
Disclosure of Invention
In order to solve the problems, the invention provides a method for forming a universal joint, which can save raw materials, reduce the production cost and improve the product quality.
The technical scheme adopted by the invention is as follows: a forming method of a universal joint comprises the step of cutting materials to form a universal joint material part, and after the materials are cut, the following cold extrusion treatment is carried out:
A. shaping and edge-binding two ends of the material part to form chamfers at the two ends,
B. one end of the material part is subjected to a plurality of telescopic rods to form a square, each side wall of the square is of an inwards concave structure,
C. stretching the square to prolong the length of the square and shaping the head of the square to form a chamfer part;
D. cutting ears on two opposite side surfaces of the non-shrinkage rod part to form a conical part, wherein the head of the formed conical part is provided with arc transition parts along two sides of the cut ears;
E. flattening the middle part of the conical part to form a groove body.
Compared with the prior art, the invention has the following beneficial effects:
cold extrusion is a plastic working process, which plastically transfers the volume of metal without destroying the property of the metal, so as to form the metal with less cutting and no cutting. Thus, a large amount of metal scraps are avoided during cutting and processing, and a large amount of steel and various metal materials are saved.
The universal joint is designed and arranged with the working positions being one of the key points of cold extrusion, and the invention can be manufactured by adopting a cold extrusion method through reasonably outlining the working positions, has high speed, high precision and high production efficiency, does not adopt the traditional processes of turning, planning, milling and the like, greatly saves raw materials and reduces the production cost. And cold extrusion makes metal material produce plastic deformation, makes metal internal structure change, has improved more in the aspect of the pulling force, and the ear that forms and the mechanical properties of tetragonal structure are very good, have ensured product quality, make the product have more the advantage on the use function.
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 of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a process diagram of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The method comprises the step of cutting the material to form a cold extrusion material part, wherein the used raw material is a steel section with a circular section. After the material is broken, it is cold extruded according to the process of the invention. For the material piece, the upper end surface is a front end surface, the lower end surface is a rear end surface, the upper end of the material piece is the front end or the head of the material piece, the lower end of the material piece is the rear end or the tail of the material piece, the downward direction can be understood as the backward direction, and the upward direction can be understood as the forward direction; referring to fig. 1, the specific process after material breaking is as follows:
shaping and edge-binding, wherein the two ends of the material part are shaped and edge-bound to form chamfers 1 at the two ends,
and (3) the material piece is contracted to form a square 2 by carrying out multiple contraction rods on one end of the material piece, each side wall of the square (2) is of a concave structure 3, and the square formed by adopting the rod contraction process is high in sealing performance and good in mechanical performance.
Stretching the square 2 to extend the length of the square 2 and shaping the head of the square 2 to form a chamfered part 4;
cutting ears, wherein two opposite side surfaces of the non-shrinkage rod part 3 are cut to form a tapered part 5, and the head of the formed tapered part 5 is provided with arc transition parts 7 along two sides of the cut ears
Flattening, flattening the middle position of the conical part 5 to form a groove body 6, and flattening the head side of the conical part 5 to the four sides in the flattening direction.
The invention is provided with a plurality of processes, and each process is completed on one station, thereby realizing one-time molding, namely, cold extrusion dies required by each process are arranged on one machine at one time, and the material is conveyed to the dies on each process at one time through a conveying tool for cold extrusion.
Cold extrusion is a plastic working process, which plastically transfers the volume of metal without destroying the property of the metal, so as to form the metal with less cutting and no cutting. Thus, a large amount of metal scraps are avoided during cutting and processing, and a large amount of steel and various metal materials are saved.
The universal joint is designed and arranged with the working positions being one of the key points of cold extrusion, and the invention can be manufactured by adopting a cold extrusion method through reasonably outlining the working positions, has high speed, high precision and high production efficiency, does not adopt the traditional processes of turning, planning, milling and the like, greatly saves raw materials and reduces the production cost. And cold extrusion makes metal material produce plastic deformation, makes metal internal structure change, has improved more in the aspect of the pulling force, and the ear that forms and the mechanical properties of tetragonal structure are very good, have ensured product quality, make the product have more the advantage on the use function.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. The forming method of the universal joint is characterized by comprising the step of cutting materials to form a universal joint material part, and after the materials are cut, the following cold extrusion treatment is carried out:
A. shaping and edge-binding two ends of the material part to form chamfers (1) at the two ends,
B. one end of the material part is subjected to multiple telescopic rods to form a square (2), each side wall of the square (2) is of an inwards concave structure (3),
C. stretching the square (2) to extend the length of the square (2) and shaping the head of the square (2) to form a chamfered part (4);
D. cutting two opposite side surfaces of the non-shrinkage rod part (3) into ears so that the non-shrinkage rod part forms a conical part (5), wherein the head of the formed conical part (5) is provided with arc transition parts (7) along two sides of the cut ears
The middle part of the conical part (5) is flattened to form a groove body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620307.3A CN112439865A (en) | 2020-12-31 | 2020-12-31 | Forming method of universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620307.3A CN112439865A (en) | 2020-12-31 | 2020-12-31 | Forming method of universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112439865A true CN112439865A (en) | 2021-03-05 |
Family
ID=74739709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011620307.3A Withdrawn CN112439865A (en) | 2020-12-31 | 2020-12-31 | Forming method of universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112439865A (en) |
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2020
- 2020-12-31 CN CN202011620307.3A patent/CN112439865A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210305 |
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| WW01 | Invention patent application withdrawn after publication |