CN110566665A - automobile transmission shifting fork and machining method thereof - Google Patents
automobile transmission shifting fork and machining method thereof Download PDFInfo
- Publication number
- CN110566665A CN110566665A CN201910778228.6A CN201910778228A CN110566665A CN 110566665 A CN110566665 A CN 110566665A CN 201910778228 A CN201910778228 A CN 201910778228A CN 110566665 A CN110566665 A CN 110566665A
- Authority
- CN
- China
- Prior art keywords
- fork
- shifting
- block
- cast
- base body
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000003754 machining Methods 0.000 title description 2
- 238000005266 casting Methods 0.000 claims description 12
- 238000007743 anodising Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001181 Manganese brass Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 cast-in magnets Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/321—Gear shift yokes, e.g. shift forks characterised by the interface between fork body and shift rod, e.g. fixing means, bushes, cams or pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to the field of automobiles, and discloses an automobile transmission gear shifting fork and a processing method thereof, wherein the automobile transmission gear shifting fork comprises a fork base body, a middle shifting block and two tail shifting blocks; the tail end shifting blocks are arranged at two ends of the shifting fork base body, and the middle shifting block is positioned between the two tail end shifting blocks; the middle shifting block and the two tail shifting blocks are cast into the shifting fork base body to form an integral structure. The shifting fork of the automobile transmission adopts the imbedding process to imbed the middle shifting block and the two tail shifting blocks in the shifting fork base body to form the integrated shifting fork, the middle shifting block, the tail shifting blocks and the shifting fork base body are firmly connected, and the stability and the durability of the shifting fork are improved.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a shifting fork of an automobile transmission and a processing method thereof.
Background
The shifting fork is a main part on the automobile transmission, is connected with a speed changing handle and is positioned at the lower end of the handle, and shifts a middle speed changing wheel to change the input/output speed ratio.
In the prior art, a shifting fork and a shifting block are separated into a split structure, and then the shifting fork is arranged on the shifting block. The shifting fork and the shifting block are connected by adopting a welding mode, but the welding mode is influenced by the welding quality, and the stability of the shifting fork cannot be ensured.
Disclosure of Invention
The invention aims to provide a shifting fork of an automobile transmission and a processing method thereof, which can improve the stability and the durability of the shifting fork.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shifting fork for an automobile transmission comprises a fork base body, a middle shifting block and two tail shifting blocks;
The tail end shifting blocks are arranged at two ends of the shifting fork base body, and the middle shifting block is positioned between the two tail end shifting blocks;
The middle shifting block and the two tail shifting blocks are cast into the shifting fork base body to form an integral structure.
As a preferred technical scheme of the gear shifting fork of the automobile transmission, the fork base body is made of aluminum alloy.
As a preferable technical scheme of the shifting fork of the automobile transmission, the tail shifting block and the middle shifting block are both made of copper alloy.
As a preferable technical scheme of the shifting fork of the automobile transmission, the tail shifting block and the middle shifting block are both made of manganese brass materials.
As a preferable technical scheme of the shifting fork of the automobile transmission, one of the shifting fork base body and the middle shifting block is provided with a first groove, and the other one is provided with a first cast-in arm cast in the first groove.
As a preferable technical scheme of the shifting fork of the automobile transmission, one of the shifting fork base body and the tail shifting block is provided with a second groove, and the other one is provided with a second cast-in arm cast in the second groove.
As an optimal technical scheme of the gear shifting fork of the automobile transmission, the fork base body comprises a fork body, a fork sleeve penetrating through the fork body and a reinforcing rib connecting the fork body and the fork sleeve.
As a preferable technical scheme of the shifting fork of the automobile transmission, the inner wall of the shifting fork sleeve is provided with an oxidation film formed by hard anodic oxidation treatment.
the invention also provides a processing method of the automobile transmission shifting fork, and the middle shifting block and the two tail shifting blocks are cast in the shifting fork base body in the process of casting the shifting fork base body to form the integrated shifting fork.
as a preferable technical solution of the method for processing the shift fork of the automobile transmission, after the shift fork is formed by an insert casting process, the inner wall of the shift fork sleeve of the shift fork base body is subjected to hard anodizing treatment to form an oxide film.
The invention has the beneficial effects that: the shifting fork of the automobile transmission adopts the imbedding process to imbed the middle shifting block and the two tail shifting blocks in the shifting fork base body to form the integrated shifting fork, the middle shifting block, the tail shifting blocks and the shifting fork base body are firmly connected, and the stability and the durability of the shifting fork are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and 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 contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a shift fork of an automotive transmission according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a shifting fork base according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of an end paddle according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of an intermediate shifting block according to an embodiment of the present invention.
In the figure:
1. A shifting fork base body; 11. a shifting fork body; 111. a first trench; 112. a second trench; 12. reinforcing ribs; 13. a shift fork sleeve; 14. casting the protrusion in an embedding way;
2. A tail end shifting block; 21. a terminal dial block base; 22. a second poking foot; 23. a second cast-in arm; 231. a second annular groove;
3. A middle shifting block; 31. a middle shifting block base body; 32. a first poking foot; 33. a first cast-in arm; 331. a first annular groove.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
As shown in fig. 1, the present embodiment provides a shifting fork of an automobile transmission, which includes a fork base 1, a middle shifting block 3 and two end shifting blocks 2; the tail end shifting blocks 2 are arranged at two ends of the shifting fork base body 1, the middle shifting block 3 is positioned between the two tail end shifting blocks 2, and the middle shifting block 3 and the two tail end shifting blocks 2 are embedded into the shifting fork base body 1 to form an integral structure.
the cast-in refers to casting or embedding the required products made of other materials such as cast-in magnets, copper sleeves, steel liners, metal tubes, insulating materials and the like on the designated parts of the die-casting parts, thereby not only meeting the service performance requirements of the designated parts, but also omitting the assembly process and simplifying the manufacturing process. Before casting, metal or non-metal parts are put in mould, then molten metal is poured in, after cooling and solidification, these parts are tightly inlaid in the cast metal casting to form a whole body.
This embodiment adopts the imbedding technology to imbed middle shifting block 3 and two terminal shifting blocks 2 in shift fork base member 1, forms the integral type shift fork of shifting, and firm in connection between middle shifting block 3, terminal shifting block 2 and the shift fork base member 1 has improved the steadiness and the durability of shift fork.
In order to improve the wear resistance of the shifting fork, the tail end shifting block 2 and the middle shifting block 3 are both made of copper alloy. Preferably, the end shifting block 2 and the middle shifting block 3 are both made of manganese brass material.
In order to reduce the weight of the whole shifting fork and reduce the processing cost, the shifting fork base body 1 is made of aluminum alloy.
as shown in fig. 2, in this embodiment, the fork base 1 includes a fork body 11, a fork sleeve 13 disposed through the fork body 11, and a rib 12 connecting the fork body 11 and the fork sleeve 13, and the rib 12 enhances the connection strength between the fork body 11 and the fork sleeve 13.
Further, one of the fork base 1 and the end block 2 is provided with a second groove 112, and the other is provided with a second cast-in arm 23 cast in the second groove 112. In this embodiment, the two end portions of the fork body 11 are respectively provided with a second groove 112, the second cast-in arm 23 is disposed on the end block 2, and when the fork base body 1 is cast, the second cast-in arm 23 is cast in the fork base body 1 to form the second groove 112. Through the cooperation between second slot 112 and the second cast-in arm 23, the cast-in joint strength between shift fork body 11 and terminal shifting block 2 has been improved, guarantees the reliable durability of shift fork.
Further, one of the fork base 1 and the intermediate block 3 is provided with a first groove 111, and the other is provided with a first cast-in arm 33 cast in the first groove 111. In this embodiment, the first groove 111 is formed inside the fork body 11 and between the two end blocks 2, the first cast-in arm 33 is formed on the middle block 3, and when the fork base 1 is cast, the first cast-in arm 33 is cast in the fork base 1 to form the first groove 111. Through the cooperation between first slot 111 and the first cast-in arm 33, improved the cast-in joint strength between shift fork body 11 and middle shifting block 3, guaranteed the reliable durability of shift fork.
In order to further improve the strength of the connection between the fork base 1 and the intermediate block 3, and between the fork base 1 and the end block 2, the first insert arm 33 is provided with a first annular groove 331, and the second insert arm 23 is provided with a second annular groove 231.
furthermore, the inner wall of the shifting fork sleeve 13 is provided with an oxidation film formed by hard anodic oxidation treatment, so that the hardness and the wear resistance of the shifting fork are improved.
The fork base 1 is provided with an insert casting protrusion 14, the insert casting protrusion 14 and the rib 12 are provided on the same side of the fork body 11, and the first groove 111 is provided to penetrate the insert casting protrusion 14 and the fork base 1.
Further, as shown in fig. 3, the end shifting block 2 includes an end shifting block base 21, a second shifting block 22 and the second cast-in arm 23, wherein the second shifting block 22 and the second cast-in arm 23 are disposed on two adjacent sides of the end shifting block base 21, so that the second shifting block 22 of each end shifting block 2 is directed to the second shifting block 22 of the other end shifting block 2.
Further, as shown in fig. 4, the intermediate block 3 includes an intermediate block body 31, a first block pin 32, and the first insert arm 33, the intermediate block body 31, and the first block pin 32 are provided to extend in this order in the same direction.
The embodiment also provides a processing method of the shifting fork of the automobile transmission, and the middle shifting block 3 and the two tail shifting blocks 2 are cast in the shifting fork base body 1 in the process of casting the shifting fork base body 1 to form the shifting fork.
After the shift fork is formed by the insert casting process, the inner wall of the fork sleeve 13 is subjected to hard anodizing to form an oxide film.
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. A gear shifting fork of an automobile transmission is characterized by comprising a fork base body (1), a middle shifting block (3) and two tail shifting blocks (2);
The tail end shifting blocks (2) are arranged at two ends of the shifting fork base body (1), and the middle shifting block (3) is positioned between the two tail end shifting blocks (2);
The middle shifting block (3) and the two tail shifting blocks (2) are cast into the shifting fork base body (1) to form an integral structure.
2. the automotive transmission shift fork according to claim 1, characterized in that the fork base (1) is made of an aluminum alloy.
3. The automotive transmission shift fork according to claim 1, characterized in that the end block (2) and the intermediate block (3) are both made of copper alloy.
4. An automotive transmission shift fork according to claim 3, characterized in that the end block (2) and the intermediate block (3) are both made of manganese brass material.
5. The automotive transmission shift fork according to claim 1, characterized in that one of the fork base (1) and the intermediate block (3) is provided with a first groove (111) and the other is provided with a first cast-in arm (33) cast in the first groove (111).
6. An automotive transmission shift fork according to claim 1, characterized in that one of the fork base (1) and the end block (2) is provided with a second groove (112) and the other with a second insert-cast arm (23) insert-cast in the second groove (112).
7. the automotive transmission shift fork according to claim 1, wherein the fork base (1) includes a fork body (11), a fork sleeve (13) disposed through the fork body (11), and a rib (12) connecting the fork body (11) and the fork sleeve (13).
8. the automotive transmission shift fork according to claim 7, characterized in that the inner wall of the fork sleeve (13) is provided with an oxide film formed by hard anodizing.
9. A method of manufacturing a shift fork according to any one of claims 1 to 8, characterized in that the intermediate shift block (3) and the two end shift blocks (2) are cast-in into the fork base body (1) during casting of the fork base body (1) to form an integrated shift fork.
10. The method for processing a shift fork of an automobile transmission according to claim 9, wherein after the shift fork is formed by an insert casting process, an inner wall of a fork sleeve (13) of the fork base body (1) is subjected to a hard anodizing treatment to form an oxide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910778228.6A CN110566665A (en) | 2019-08-22 | 2019-08-22 | automobile transmission shifting fork and machining method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910778228.6A CN110566665A (en) | 2019-08-22 | 2019-08-22 | automobile transmission shifting fork and machining method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566665A true CN110566665A (en) | 2019-12-13 |
Family
ID=68774331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910778228.6A Pending CN110566665A (en) | 2019-08-22 | 2019-08-22 | automobile transmission shifting fork and machining method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566665A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080178700A1 (en) * | 2007-01-31 | 2008-07-31 | Melinda Harmos | Three pad plastic shifter fork |
| CN202992151U (en) * | 2013-01-05 | 2013-06-12 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel shifting fork |
| CN105156671A (en) * | 2015-10-14 | 2015-12-16 | 无锡市永亿精密铸造有限公司 | Shifting fork with replaceable shifting fork feet |
| CN206206575U (en) * | 2016-11-30 | 2017-05-31 | 重庆工业职业技术学院 | Automotive casting shift fork |
| CN206530692U (en) * | 2017-01-05 | 2017-09-29 | 格特拉克（江西）传动系统有限公司 | A kind of automotive transmission integrated form selector fork assembly |
| CN207122568U (en) * | 2017-08-09 | 2018-03-20 | 瑞安市建鑫机械制造有限公司 | Automobile parameter case shift fork |
-
2019
- 2019-08-22 CN CN201910778228.6A patent/CN110566665A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080178700A1 (en) * | 2007-01-31 | 2008-07-31 | Melinda Harmos | Three pad plastic shifter fork |
| CN202992151U (en) * | 2013-01-05 | 2013-06-12 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel shifting fork |
| CN105156671A (en) * | 2015-10-14 | 2015-12-16 | 无锡市永亿精密铸造有限公司 | Shifting fork with replaceable shifting fork feet |
| CN206206575U (en) * | 2016-11-30 | 2017-05-31 | 重庆工业职业技术学院 | Automotive casting shift fork |
| CN206530692U (en) * | 2017-01-05 | 2017-09-29 | 格特拉克（江西）传动系统有限公司 | A kind of automotive transmission integrated form selector fork assembly |
| CN207122568U (en) * | 2017-08-09 | 2018-03-20 | 瑞安市建鑫机械制造有限公司 | Automobile parameter case shift fork |
Non-Patent Citations (2)
| Title |
|---|
| 张明之等: "《铸造词典》", 30 April 1986 * |
| 黄红军等: "《金属表面处理与防护技术》", 30 October 2011 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |