CN111015134A - End face tooth bell housing and manufacturing method thereof - Google Patents
End face tooth bell housing and manufacturing method thereof Download PDFInfo
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- CN111015134A CN111015134A CN201911260593.4A CN201911260593A CN111015134A CN 111015134 A CN111015134 A CN 111015134A CN 201911260593 A CN201911260593 A CN 201911260593A CN 111015134 A CN111015134 A CN 111015134A
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- blank
- saponification
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- phosphating
- tooth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention relates to a face tooth bell-shaped shell and a manufacturing method thereof, wherein the method comprises the steps of firstly forging a bar stock to obtain a blank; carrying out surface treatment on the obtained blank to obtain a blank without an oxide scale on the surface; then, carrying out phosphating treatment on the obtained blank without the oxide scale on the surface to obtain a blank with a phosphating film on the surface; then, saponifying the obtained blank with the phosphating film on the surface, and performing cold extrusion to obtain a blank with a tooth shape; and finishing the obtained blank with the tooth shape to obtain the end face tooth bell-shaped shell. The manufacturing method of the invention uses the processing procedures of warm forging, shot blasting, cold extrusion, finishing and the like to replace the milling procedure applied in the traditional production process, saves raw materials, further ensures the integral strength and rigidity of the formed part and increases the one-time processing forming rate.
Description
Technical Field
The invention relates to the technical field of metal forming, in particular to an end face tooth bell-shaped shell and a manufacturing method thereof.
Background
The end face tooth bell-shaped shell has important application in an automobile transmission system, the shell part has the advantages of large bearing capacity, automatic centering and the like, but compared with the common bell-shaped shell, the tooth profile of the shell end face is very difficult to process, the industry generally adopts a milling mode to process the tooth profile, materials are wasted, the milling process also damages the streamline of parts, and the service life of a final finished product is influenced.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a face tooth bell shell and a manufacturing method thereof for the market, and the specific technical scheme is as follows:
the invention comprises a method for manufacturing a face tooth bell housing, which comprises the following steps:
s1: forging the bar stock to obtain a blank;
s2: performing surface treatment on the blank obtained in the step S1 to obtain a blank without an oxide scale on the surface;
s3: performing phosphating treatment on the blank without the oxide scale on the surface obtained in the step S2 to obtain a blank with a phosphating film on the surface;
s4: saponifying the blank with the phosphating film on the surface obtained in the step S3, and then performing cold extrusion to obtain a blank with a tooth shape;
s5: and (5) finishing the blank with the tooth form obtained in the step (S4) to obtain the end face tooth bell-shaped shell.
Further to the above technical solution, in step S1, the forging includes warm forging;
further, the bar stock is placed into an inner cavity of a warm forging die for backward extrusion to form a blank with the shape consistent with that of the inner cavity of the warm forging die.
Further, for step S2, the surface treatment includes a shot blasting process, and the oxide skin on the surface of the blank is cleaned through the shot blasting process.
Further, in step S3, the phosphating treatment is to put the blank without the surface scale into a phosphating solution, and the phosphating treatment is to put the blank without the surface scale into the phosphating solution to be soaked until a layer of phosphating film is formed on the surface of the blank without the surface scale.
Further, for step S4, the saponification treatment is to soak the blank with the phosphating film on the surface in a saponification liquid, so that a saponification film layer is formed on the surface of the blank with the phosphating film on the surface.
Preferably, the saponification treatment comprises a first saponification and a second saponification, and the first saponification and the second saponification are successively completed in sequence;
preferably, the first saponification is to soak the blank with the phosphating film on the surface in saponification liquid for 5-10 minutes, and then dry the blank to form a first saponification film layer on the surface of the phosphating film;
preferably, the second saponification is to soak the blank with the first saponification film layer in the saponification solution for 10-15 minutes, then dry the blank, and cover the surface of the first saponification film layer to form a second saponification film layer.
Preferably, in step S4, after the second saponification film layer is formed on the surface of the blank with the phosphating film on the surface, the blank is placed into a cold extrusion die cavity for cold extrusion, and the blank is plastically deformed to form a tooth shape consistent with the shape of the cold extrusion die cavity.
Further, for step S5, the finishing process includes performing a cold working process of surface roughness on the blank with the tooth shape by using metal extrusion, so that the precision of the tooth shape on the blank and the blank meets a predetermined requirement, thereby obtaining a finished end face tooth bell shell.
The invention also includes a face tooth bell housing made according to the method of making a face tooth bell housing of the invention.
The invention has the following beneficial effects:
1. the manufacturing method of the end face tooth bell-shaped shell adopts warm forging to forge a bar stock, the warm forging forming is to finish the forming of a part under the temperature condition that the deformation resistance is reduced and the plasticity is improved after the temperature of a metal material is increased, and the surface is not oxidized violently, so that the metal shaping can be fully utilized, and the deformation resistance is reduced;
2. according to the manufacturing method of the end face tooth bell-shaped shell, the blank surface is processed by adopting the shot blasting process, so that impurities such as surface oxide skin and the like can be removed, and the appearance quality is improved;
3. the phosphating treatment in the manufacturing method of the end face tooth bell-shaped shell is a process of forming a phosphate chemical conversion film by applying chemical and electrochemical reactions, can provide protection for base metal and prevent the metal from being corroded to a certain degree;
4. the saponification treatment in the manufacturing method of the end face tooth bell shell of the invention is to further increase the lubricating property for the base metal on the basis of the phosphating treatment;
5. the manufacturing method of the end face tooth bell-shaped shell comprises the steps of warm forging a bar and then back extruding a tooth shape, compared with the traditional manufacturing method of the end face tooth bell-shaped shell, the manufacturing method ensures the integral deformation resistance of a part after the part is formed, saves materials compared with the traditional milling method, and increases the one-time forming rate.
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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the structure of the bar of the present invention;
FIG. 2 is a schematic end view of the blank of the present invention;
FIG. 3 is a schematic end view of a castellated blank according to the invention;
FIG. 4 is a schematic end view of the face tooth bell of the present invention.
Wherein: 1-bar stock, 2-blank, 3-blank with tooth shape, 4-end face tooth bell shell.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
At present, the industry generally adopts a milling mode to process the end face tooth form of the end face tooth bell-shaped shell, so that materials are wasted, streamline of parts is damaged in milling, and the service life of a final finished product is influenced. Accordingly, the present invention provides a face tooth bell housing and a method of manufacturing the same to solve the above problems.
FIG. 1 is a schematic view of the structure of the bar of the present invention; FIG. 2 is a schematic end view of the blank of the present invention; FIG. 3 is a schematic end view of a castellated blank according to the invention; FIG. 4 is a schematic end view of the face tooth bell of the present invention.
Referring to fig. 1-4, the present invention provides a method for manufacturing a face tooth bell housing, comprising the steps of:
s1: forging the bar stock to obtain a blank;
s2: performing surface treatment on the blank obtained in the step S1 to obtain a blank without an oxide scale on the surface;
s3: performing phosphating treatment on the blank without the oxide scale on the surface obtained in the step S2 to obtain a blank with a phosphating film on the surface;
s4: saponifying the blank with the phosphating film on the surface obtained in the step S3, and then performing cold extrusion to obtain a blank with a tooth shape;
s5: and (5) finishing the blank with the tooth form obtained in the step (S4) to obtain the end face tooth bell-shaped shell.
Further to the above technical solution, in step S1, the forging includes warm forging;
preferably, a bar is placed into the inner cavity of the warm forging die for backward extrusion to form a blank with the shape consistent with that of the inner cavity of the warm forging die. The blank 2 is a barrel body with an opening and an inner cavity communicated with the opening.
Further, for step S2, the surface treatment includes a shot blasting process, and the oxide skin on the surface of the blank is cleaned through the shot blasting process. Including the scale on the outer surface of the blank 2 and the inner cavity wall surface.
Further, in step S3, the phosphating treatment is to soak the blank without the surface scale in a phosphating solution until a layer of phosphating film is formed on the surface of the blank without the surface scale. The phosphating treatment generally comprises the steps of putting the blank with the surface free of oxide skin into a phosphating solution and treating for 10-40 minutes at 10-40 ℃; the ratio of the free acidity to the total acidity of the phosphating solution is 1: (20-30); the thickness of the phosphating film obtained by phosphating treatment is 0.2-7 g/m2。
Further, for step S4, the saponification treatment is to soak the blank with the phosphating film on the surface in a saponification liquid, so that a saponification film layer is formed on the surface of the blank with the phosphating film on the surface.
Further, the saponification treatment comprises a first saponification and a second saponification, and the first saponification and the second saponification are successively completed in sequence;
further, the first saponification is to soak the blank with the phosphating film on the surface in saponification liquid for 5 minutes, and then the blank is dried to form a first saponification film layer on the surface of the phosphating film;
further, the second saponification is to soak the blank with the first saponification film layer in the saponification liquid for 10 min, and then to dry the blank, and to cover the surface of the first saponification film layer to form a second saponification film layer.
Further, in step S4, after the second saponification film layer is formed on the surface of the blank having the phosphating film on the surface, the blank is placed into a cold extrusion die cavity for cold extrusion, and the blank is plastically deformed to form a tooth shape consistent with the shape of the cold extrusion die cavity.
Further, for step S5, the finishing process includes performing a cold working process of surface roughness on the blank 3 with the tooth shape by using metal extrusion, so that the precision of the tooth shape on the blank and the blank meets the predetermined requirement, thereby obtaining the finished end face tooth bell housing 4.
The invention also provides a face tooth bell housing which is manufactured by the manufacturing method of the face tooth bell housing.
Referring to fig. 1-4, the bar 1 of the present invention is a solid column, the solid column is warm forged into a blank 2, the blank 2 is a barrel body having an opening and an inner cavity communicated with the opening, then the surface of the blank 2 is shot-blasted to remove surface oxide skin, then the metal surface of the blank is lubricated by phosphating and saponification, then the blank is extruded into a predetermined tooth form by a cold extrusion process, the tooth form is consistent with the shape of the cold extrusion die cavity, and finally the blank 3 having the tooth form is subjected to a finishing process, which can be performed by cold processing the inner cavity of the blank by a metal extrusion method, so that the tooth form and the blank surface are smoother to achieve a surface roughness meeting requirements, and a finished end face tooth bell housing 4 is formed after finishing.
The manufacturing method of the end face tooth bell-shaped shell 4 adopts warm forging to forge a bar stock, the warm forging forming is to finish the forming of parts under the temperature condition that the deformation resistance is reduced and the plasticity is improved after the temperature of a metal material is raised, and the surface is not oxidized violently, so that the metal shaping can be fully utilized, and the deformation resistance is reduced;
the surface of the blank is further treated by adopting a shot blasting procedure, so that impurities such as surface oxide skin and the like can be removed, and the appearance quality is improved;
the further adoption of the phosphating treatment is a process of forming a phosphate chemical conversion film by applying chemical and electrochemical reactions, and can protect the base metal and prevent the metal from being corroded to a certain degree;
the further saponification treatment is used for further adding the lubricating property to the base metal on the basis of the phosphating treatment.
In conclusion, the manufacturing method of the end face tooth bell-shaped shell firstly performs warm forging on a bar stock and then performs backward extrusion on the tooth shape, compared with the traditional manufacturing method of the end face tooth bell-shaped shell, the manufacturing method ensures the integral strength and rigidity of the formed part, saves materials compared with the traditional milling method, and increases the one-step forming rate.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications and variations may be made therein by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A method of manufacturing a face tooth bell housing, characterized by: the method comprises the following steps:
s1: forging the bar stock (1) to obtain a blank (2);
s2: performing surface treatment on the blank (2) obtained in the step S1 to obtain a blank without an oxide scale on the surface;
s3: performing phosphating treatment on the blank without the oxide scale on the surface obtained in the step S2 to obtain a blank with a phosphating film on the surface;
s4: saponifying the blank with the phosphating film on the surface obtained in the step S3, and then performing cold extrusion to obtain a blank (3) with a tooth shape;
s5: and (4) finishing the blank (3) with the tooth form obtained in the step (S4) to obtain a face tooth outer shell (4).
2. The manufacturing method according to claim 1, characterized in that: in step S1, the forging includes warm forging;
and (3) putting the bar stock (1) into the inner cavity of the warm forging die for backward extrusion to form a blank (2) with the shape consistent with that of the inner cavity of the warm forging die.
3. The manufacturing method according to claim 1, characterized in that: for step S2, the surface treatment includes a shot blasting process by which the scale on the surface of the blank (2) is cleaned.
4. The manufacturing method according to claim 1, characterized in that: for step S3, the phosphating treatment is to soak the blank without the surface scale in a phosphating solution until a layer of phosphating film is formed on the surface of the blank without the surface scale.
5. The manufacturing method according to claim 1, characterized in that: for step S4, the saponification treatment is to soak the blank with the phosphating film on the surface in a saponification solution, so that a saponification film layer is formed on the surface of the blank with the phosphating film on the surface.
6. The manufacturing method according to claim 5, characterized in that: the saponification treatment comprises a first saponification and a second saponification, and the first saponification and the second saponification are sequentially and continuously completed;
the first saponification is to place the blank with the phosphating film on the surface into saponification liquid to be soaked for 5-10 minutes, and then dry the blank to form a first saponification film layer on the surface of the phosphating film;
and the second saponification is to place the blank with the first saponification film layer into the saponification solution to be soaked for 10-15 minutes, then dry the blank, and cover the surface of the first saponification film layer to form a second saponification film layer.
7. The manufacturing method according to claim 1, characterized in that: in step S4, after the second saponification film layer is formed on the surface of the blank having the phosphating film on the surface, the blank is placed into a cold extrusion die cavity for cold extrusion, and the blank is plastically deformed to form a tooth shape consistent with the shape of the cold extrusion die cavity.
8. The manufacturing method according to claim 1, characterized in that: for step S5, the finishing process includes performing a cold working process of surface roughness on the blank (3) with the tooth shape by using metal extrusion, so that the precision of the tooth shape on the blank and the blank can meet the preset requirement, thereby obtaining the finished end face tooth bell shell (4).
9. A face tooth bell housing characterized by: the face tooth outer shell (4) is manufactured according to the method of manufacturing a face tooth outer shell (4) according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260593.4A CN111015134A (en) | 2019-12-10 | 2019-12-10 | End face tooth bell housing and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260593.4A CN111015134A (en) | 2019-12-10 | 2019-12-10 | End face tooth bell housing and manufacturing method thereof |
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| CN111015134A true CN111015134A (en) | 2020-04-17 |
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| CN201911260593.4A Pending CN111015134A (en) | 2019-12-10 | 2019-12-10 | End face tooth bell housing and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889655A (en) * | 2022-12-30 | 2023-04-04 | 江苏创一精锻有限公司 | Forging process for finish-forged groove bell-shaped shell with end face teeth |
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