CN101614140A - A kind of plastic cam shaft and preparation method thereof - Google Patents
A kind of plastic cam shaft and preparation method thereof Download PDFInfo
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- CN101614140A CN101614140A CN200810039662A CN200810039662A CN101614140A CN 101614140 A CN101614140 A CN 101614140A CN 200810039662 A CN200810039662 A CN 200810039662A CN 200810039662 A CN200810039662 A CN 200810039662A CN 101614140 A CN101614140 A CN 101614140A
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Abstract
The present invention proposes a kind of plastic cam shaft and preparation method thereof, and this technology uses metal to make main shaft portion, and above-mentioned main shaft portion is carried out the cylindrical polishing; Then carry out plastic injection-mouldedly, form plastic cam part and plastic gear part in above-mentioned metal main shaft outside; Then above-mentioned plastic cam part and above-mentioned plastic gear are partly carried out fastening processing,, remove the burr of above-mentioned plastic cam part and above-mentioned plastic gear part at last so that both and above-mentioned master metal shaft portion are closely linked together.The camshaft that the present invention adopts plastics to make had both kept the intensity and the toughness of virgin metal camshaft, had guaranteed the advantage of the low noise of plastic cam shaft again, had reduced cost of production.
Description
Technical field
The present invention relates to a kind of camshaft and preparation method thereof, and be particularly related to a kind of plastic cam shaft and preparation method thereof.
The background skill originally
As cam assembly, usually there are axle, cam and gear to constitute, its cam and gear are separately positioned on the two ends of axle, and prior art can be divided into two kinds, and a kind of is the spheroidal graphite cast iron material, its axle, cam and gear three parts are by the cast iron once-through, this cam assembly overall structure is very solid, long service life, and casting process is also uncomplicated, but the noise vibration of gear parts is very big, and the cost of processing spheroidal graphite cast iron gear parts is higher; Second kind is full nylon material, its axle, cam and gear three parts are by the nylon once-through, manufacture process is simple, and the gear parts of this cam assembly is owing to be plastics, so noise vibration is little, but because main shaft also is nylon material, thereby overall structure is not very solid, so working life is short.
Summary of the invention
The object of the present invention is to provide a kind of plastic cam shaft and preparation method thereof, promptly kept the intensity and the toughness of virgin metal camshaft, guaranteed the advantage of the low noise of plastic cam shaft again, reduced cost of production.
In order to achieve the above object, the present invention proposes a kind of making method of plastic cam shaft, and it comprises the following steps:
Use metal to make main shaft portion, and above-mentioned main shaft portion is carried out the cylindrical polishing;
Carry out plastic injection-mouldedly in above-mentioned metal main shaft outside, form plastic cam part and plastic gear part;
Above-mentioned plastic cam part and above-mentioned plastic gear are partly carried out fastening processing, so that both and above-mentioned master metal shaft portion are closely linked together.
Further, wherein said method more comprises the burr of removing above-mentioned plastic cam part and above-mentioned plastic gear part.
Further, wherein above-mentioned plastic cam partly comprises intake cam and exhaust cam.
Further, wherein above-mentioned plastic gear partly has a plurality of stiffening ribs.
In order to achieve the above object, the present invention more proposes a kind of plastic cam shaft, it comprises main shaft portion, cam portion and gear parts, above-mentioned main shaft portion adopts metal to make, intrinsic above-mentioned cam portion and said gear part on it, and above-mentioned cam portion and said gear partly adopt plastics to make.
Further, wherein above-mentioned plastic cam partly comprises intake cam and exhaust cam.
Further, wherein above-mentioned plastic gear partly has a plurality of stiffening ribs.
Further, the plastics of making that wherein above-mentioned cam portion and said gear partly adopt are nylon 46.
Plastic cam shaft provided by the invention, production technology is simple, under the situation that mechanical property is equal to, can solve the problem that the energy makes full use of, and, in practical operation, to a great extent, reduced the mechanicalness noise that work is, for the staff has created a reasonable working environment, in addition, this invention has reduced production cost greatly, for competitive ability has improved in enterprise.
Description of drawings
Figure 1 shows that the making method flow chart of preferred embodiment plastic cam shaft of the present invention.
Figure 2 shows that the structural representation of preferred embodiment plastic cam shaft of the present invention.
Figure 3 shows that the gear parts schematic representation of preferred embodiment plastic cam shaft of the present invention.
Embodiment
In order more to understand technology contents of the present invention, especially exemplified by preferred embodiment and cooperate appended graphic being described as follows.
Please refer to Fig. 1, Figure 1 shows that the making method flow chart of preferred embodiment plastic cam shaft of the present invention.The making method of the plastic cam shaft that the present invention proposes, it comprises the following steps: step 100: use metal to make main shaft portion, and main shaft portion is carried out the cylindrical polishing, wherein above-mentioned main shaft can use the 45# steel to make, it has higher intensity and toughness, has guaranteed the working life of camshaft; Step 110: carry out plastic injection-mouldedly in metal main shaft outside, form plastic cam part and plastic gear part; Step 120: plastic cam part and plastic gear are partly carried out fastening processing, so that both and master metal shaft portion are closely linked together.The preferred embodiment according to the present invention, this method more comprises step 130: remove the burr of plastic cam part and plastic gear part, to guarantee the smooth smooth of camshaft.
Please refer to Fig. 2 and Fig. 3 again, Figure 2 shows that the structural representation of preferred embodiment plastic cam shaft of the present invention, Figure 3 shows that the gear parts schematic representation of preferred embodiment plastic cam shaft of the present invention.The plastic cam shaft that the present invention proposes, it comprises main shaft portion 10, cam portion 20 and gear parts 30, and above-mentioned main shaft portion 10 adopts metal to make, intrinsic above-mentioned cam portion 20 and said gear part 30 on it, and above-mentioned cam portion 20 and said gear part 30 adopt plastics to make.Simultaneously, plastic cam part 20 comprises intake cam 21 and exhaust cam 22, in order to drive intake valve and exhaust valve, certain camshaft of the present invention can have a plurality of cam portions, plastic gear part 30 has a plurality of stiffening ribs 31, a plurality of stiffening ribs 31 are in order to guarantee the intensity of gear parts 30, can not damage because of long-time the rotation, prolonged the working life of camshaft, the plastics of making that above-mentioned cam portion 20 and said gear part 30 adopt are nylon 46, and only be effect for example at this, also can use other plastic materials to carry out making of cam portion 20 and gear parts 30, adopt plastic materials to effectively reduce the cost of production of camshaft, adopted making of plastic materials to make plastic cam shaft have lower noise simultaneously.
Plastic cam shaft provided by the invention, production technology is simple, under the situation that mechanical property is equal to, can solve the problem that the energy makes full use of, and, in practical operation, to a great extent, reduced the mechanicalness noise that work is, for the staff has created a reasonable working environment, in addition, this invention has reduced production cost greatly, for competitive ability has improved in enterprise.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (8)
1. the making method of a plastic cam shaft is characterized in that comprising the following steps:
Use metal to make main shaft portion, and above-mentioned main shaft portion is carried out the cylindrical polishing;
Carry out plastic injection-mouldedly in above-mentioned metal main shaft outside, form plastic cam part and plastic gear part;
Above-mentioned plastic cam part and above-mentioned plastic gear are partly carried out fastening processing, so that both and above-mentioned master metal shaft portion are closely linked together.
2. the making method of plastic cam shaft according to claim 1 is characterized in that wherein said method more comprises the burr of removing above-mentioned plastic cam part and above-mentioned plastic gear part.
3. the making method of plastic cam shaft according to claim 1 is characterized in that wherein above-mentioned plastic cam partly comprises intake cam and exhaust cam.
4. the making method of plastic cam shaft according to claim 1 is characterized in that wherein above-mentioned plastic gear partly has a plurality of stiffening ribs.
5. plastic cam shaft, it is characterized in that comprising main shaft portion, cam portion and gear parts, above-mentioned main shaft portion adopts metal to make, intrinsic above-mentioned cam portion and said gear part on it, and above-mentioned cam portion and said gear partly adopt plastics to make.
6. plastic cam shaft according to claim 5 is characterized in that wherein above-mentioned plastic cam partly comprises intake cam and exhaust cam.
7. plastic cam shaft according to claim 5 is characterized in that wherein above-mentioned plastic gear partly has a plurality of stiffening ribs.
8. plastic cam shaft according to claim 5 is characterized in that the plastics of making that wherein above-mentioned cam portion and said gear partly adopt are nylon 46.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810039662A CN101614140A (en) | 2008-06-26 | 2008-06-26 | A kind of plastic cam shaft and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810039662A CN101614140A (en) | 2008-06-26 | 2008-06-26 | A kind of plastic cam shaft and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN101614140A true CN101614140A (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810039662A Pending CN101614140A (en) | 2008-06-26 | 2008-06-26 | A kind of plastic cam shaft and preparation method thereof |
Country Status (1)
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| CN (1) | CN101614140A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251820A (en) * | 2010-05-20 | 2011-11-23 | 孙晶 | Cam shaft and valve rocker |
| CN105415570A (en) * | 2015-10-28 | 2016-03-23 | 沈建良 | Plastic and metal combination forming process |
| CN108194158A (en) * | 2017-12-19 | 2018-06-22 | 玉环捷宇机械制造有限公司 | A kind of valve actuating mechanism of cam pack and processing technology and the application cam pack |
| CN114525964A (en) * | 2022-03-09 | 2022-05-24 | 张俊 | Conductive ratchet wheel assembly and preparation method thereof |
-
2008
- 2008-06-26 CN CN200810039662A patent/CN101614140A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251820A (en) * | 2010-05-20 | 2011-11-23 | 孙晶 | Cam shaft and valve rocker |
| CN105415570A (en) * | 2015-10-28 | 2016-03-23 | 沈建良 | Plastic and metal combination forming process |
| CN108194158A (en) * | 2017-12-19 | 2018-06-22 | 玉环捷宇机械制造有限公司 | A kind of valve actuating mechanism of cam pack and processing technology and the application cam pack |
| CN108194158B (en) * | 2017-12-19 | 2024-02-09 | 玉环捷宇机械制造有限公司 | Cam assembly, processing technology and valve mechanism using cam assembly |
| CN114525964A (en) * | 2022-03-09 | 2022-05-24 | 张俊 | Conductive ratchet wheel assembly and preparation method thereof |
| CN114525964B (en) * | 2022-03-09 | 2023-08-01 | 张俊 | Conductive ratchet wheel assembly and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091230 |