CN102562201A - Assembled camshaft - Google Patents
Assembled camshaft Download PDFInfo
- Publication number
- CN102562201A CN102562201A CN2012100377314A CN201210037731A CN102562201A CN 102562201 A CN102562201 A CN 102562201A CN 2012100377314 A CN2012100377314 A CN 2012100377314A CN 201210037731 A CN201210037731 A CN 201210037731A CN 102562201 A CN102562201 A CN 102562201A
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- camshaft
- axis body
- powder metallurgy
- phase discriminator
- assembled
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- Gears, Cams (AREA)
Abstract
The invention discloses an assembled camshaft. The shaft body of the assembled camshaft is a seamless steel tube. The front end of the camshaft is connected with the inner wall of one end part of the shaft body in a matching way. Powder metallurgy cams in pairs are arranged on the shaft body in a pressing way. A powder metallurgy shaft neck is arranged between each pair of powder metallurgy cams. A signal panel is connected with an outer wall of the other end part of the shaft body in a matching manner. A bowl-shaped plug is matched with the inner wall of the other end part of the shaft body. The assembled camshaft has the advantages that as the seamless steel tube is adopted for manufacturing the shaft body, the procedure of manufacturing an axis lubricating oil hole is reduced, and the weight of the camshaft is reduced by 20-30% compared with that of the camshaft with the same specification, and the demand of lightweight automobile is met; as the front end of the camshaft is independently manufactured, the demand of the camshaft with a phase can be met; as the cam is independently manufactured, the manufacturing method of the camshaft is higher in flexibility, and the manufacturing process is simpler; and as the independent powder metallurgy shaft neck with a high oil ratio is adopted, the friction loss of an engine value is reduced, and the lubricating coefficient is improved, so that the service life of the product is prolonged.
Description
Technical field
The present invention relates to automotive engine component, be specifically related to a kind of can with the assembled camshaft of phase discriminator coupling.
Background technique
China's camshaft of car engine material mainly is (referring to QC/T544-2000 " the camshaft technical specifications ") such as low-carbon alloy steels of chilled cast iron alloy, spheroidal graphite cast iron, high-quality steel or case-carbonizing at present.Whole camshaft adopts same material, and through producing qualified camshaft after heat treatment, the machining, but preparation process more complicated, cost of production are high, and weight is big, does not meet Hyundai Motor motor lightweight requirements.And the camshaft performance of homogenous material can't reach the requirement of vehicular engine camshaft design: core good toughness, not easy-rupturing; Cam hardness is high, wear resistance is good etc.Therefore, the innovation of camshaft is imperative.Assembled camshaft can solve above-mentioned technical barrier, but because the development of engine technology, use phase discriminator after, must be on camshaft the oil duct of complicated layout, this makes assembled camshaft face new technical barrier and challenge.
Summary of the invention
The assembled camshaft that the purpose of this invention is to provide a kind of and phase discriminator coupling, its cam hardness is high, wear resistance is good, axle core good toughness, easy-rupturing not can solve effectively that weight is big, the problem of preparation process more complicated, reduces production costs.
A kind of assembled camshaft of the present invention comprises axis body, and axis body is a seamless steel pipe, is carrier with the axis body, on axis body, is pressed with paired powder metallurgy cam, between every pair of powder metallurgy cam, is provided with a powder metallurgy axle journal; The outer wall of one signal panel and axis body one end is connected;
Further, said powder metallurgy cam adopts the good FN-0208 powdered metallurgical material of wear-resisting property to make, and makes its surface hardness greater than 45HRC through heat treatment, and depth of hardening is greater than 2mm;
Further, the powder metallurgy cam is installed on the axis body through hot pressing mode, becomes one with axis body;
Further, said powder metallurgy axle journal is installed on the axis body through hot pressing mode after being in saturation state through abundant immersion oil, becomes one with axis body;
Further, said powder metallurgy axle journal adopts the FN-0208 powdered metallurgical material to make;
Further, be tightly connected with the inwall of the relative the other end of signal panel and the phase discriminator connecting head of a camshaft front end on the axis body; Also be provided with phase discriminator positioning pin hole, first phase discriminator angle control oil duct, second phase discriminator angle control oil duct and phase discriminator mounting center screw on the said camshaft front end;
Further, the material of said camshaft front end is an Alloy Constructional Steel;
Further, the material of said axis body is the 45# steel.
Advantage of the present invention is following: the advantage of integrated steel camshaft and two kinds of one-piece camshafts of chilled cast iron camshaft; Overcome the intrinsic defect of above-mentioned two kinds of camshafts; The camshaft wear resistance is good than one-piece camshaft, and axle journal mechanical strength and mechanical property are better than integrated type chilled cast iron camshaft; Owing to adopt seamless steel pipe to make axis body, not only reduced processing axle center oilhole operation, and, met the automobile lightweight requirements than the camshaft weight saving 20～30% of same specification; Because the independent camshaft front end of making, can satisfy band phase discriminator camshaft or not with the flexible requirement of phase discriminator camshaft; Because the independent cam of making, make the production method of camshaft possess higher flexibility, technology is simpler; The powder metallurgy cam adopts the good FN-0208 powdered metallurgical material of wear-resisting property to make, and makes its surface hardness greater than 45HRC through heat treatment, and depth of hardening can guarantee cam health wear-out life greater than 2mm; Because adopt the high independently powder metallurgy axle journal of oil content, making engine valve is that frictional loss reduces, lubricating coefficient improves, thereby has prolonged product working life; The split type part of axle journal be arranged at cam to, the mode through hot pressing dress is pressed into main shaft, alleviates camshaft weight and has guaranteed camshaft profile technological requirement in the part simultaneously; The powder metallurgy axle journal adopts the powdered metallurgical material of high oil content to make; Mode through the hot pressing dress cooperates with axis body, and the lubricating coefficient of camshaft is improved, and frictional force reduces; And can be under the bad working environments of unlubricated oil, through the mode continuous firing of selflubricating.
Description of drawings
Fig. 1 assembled camshaft complete section figure;
Fig. 2 assembled camshaft explosive view;
The structural representation of Fig. 3 assembled camshaft front end.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Referring to Fig. 1, Fig. 2 and a kind of assembled camshaft shown in Figure 3; Its axis body 6 is a seamless steel pipe; For four cylinder engine, four pairs of powder metallurgy cams 2 (pair of cams 2 corresponding cylinder bodies) are equipped with in hot pressing on axis body 6, between every pair of powder metallurgy cam, are provided with a powder metallurgy axle journal 5; One signal panel 3 are connected with the outer wall of axis body 6 one ends; Powder metallurgy cam 2 adopts the good FN-0208 powdered metallurgical material of wear-resisting property to make, and makes its surface hardness greater than 45HRC through heat treatment, and depth of hardening makes powder metallurgy cam performance be superior to chilled cast iron greater than 2mm; Totally eight on powder metallurgy cam 2 is divided into four groups, confirms that according to the engine valve position its hot pressing is contained in the position on the axis body, becomes one with axis body.
Further, said powder metallurgy axle journal 5 also adopts the FN-0208 powdered metallurgical material to make.Make its abundant immersion oil be in saturation state, and according to the camshaft bearing bush seat spatial position requirement of motor, four powder metallurgy axle journals cooperate with the camshaft bearing bush seat of engine cylinder cover; Four powder metallurgy axle journals 5 are installed on the axis body 6 through hot pressing mode, become one with axis body;
Further, said camshaft front end 1 is provided with phase discriminator connecting head 9, and the inwall interference of this phase discriminator connecting head and axis body 6 one ends is sealed and matched; Also be provided with phase discriminator positioning pin hole 7, first phase discriminator angle control oil duct 8, second phase discriminator angle control oil duct 10 and phase discriminator mounting center screw 11 on the said camshaft front end 1.In order to solve baroque problem behind the camshaft coupling phase discriminator (designing the first phase discriminator oil duct 8, the second phase discriminator oil duct 10 and phase discriminator mounting center screw 11 etc. like needs); So specialized designs of the present invention camshaft front end 1 independently; And the employing superior alloy steel is a material, and the phase discriminator on the camshaft front end 1 connects 9 somewhat larger in diameter in the diameter of main shaft body opening, through the mode of hot pressing dress; Employing is defeated into the main shaft endoporus greater than 12000N's, makes it to become one with main shaft.
The material of said axis body 6 is the 45# steel, and the material of said camshaft front end 1 is an Alloy Constructional Steel.
In order to guarantee using effect, signal panel 3 are supporting through external coordination with bowl-type obstruction 4, or the kitting from market, and technical requirements requires identical with one-piece camshaft.
Assembling adopts the processing technology identical with integrated type can accomplish processing after accomplishing, and promptly obtains cheapness, high-quality, weight and reduces by 20～30% camshaft approximately.
Claims (8)
1. assembled camshaft; Comprise axis body (6), it is characterized in that: axis body (6) is a seamless steel pipe, is carrier with axis body (6); On axis body (6), be pressed with paired powder metallurgy cam (2), between every pair of powder metallurgy cam, be provided with a powder metallurgy axle journal (5); One signal panel (3) are connected with the outer wall of axis body (6) one ends.
2. a kind of assembled camshaft according to claim 1 is characterized in that: said powder metallurgy cam (2) adopts the FN-0208 powdered metallurgical material to make, and makes its surface hardness greater than 45HRC through heat treatment, and depth of hardening is greater than 2mm.
3. a kind of assembled camshaft according to claim 1 and 2 is characterized in that: powder metallurgy cam (2) is installed on the axis body (6) through hot pressing mode, becomes one with axis body.
4. a kind of assembled camshaft according to claim 1 and 2 is characterized in that: said powder metallurgy axle journal (5) is installed on the axis body (6) through hot pressing mode after being in saturation state through abundant immersion oil, becomes one with axis body.
5. a kind of assembled camshaft according to claim 1 and 2 is characterized in that: said powder metallurgy axle journal (5) adopts the FN-0208 powdered metallurgical material to make.
6. a kind of assembled camshaft according to claim 1 is characterized in that: axis body (6) is gone up with the inwall of the relative the other end of signal panel (3) and the phase discriminator connecting head (9) of a camshaft front end (1) and is tightly connected; Also be provided with phase discriminator positioning pin hole (7), first phase discriminator angle control oil duct (8), second phase discriminator angle control oil duct (10) and phase discriminator mounting center screw (11) on the said camshaft front end (1).
7. a kind of assembled camshaft according to claim 6 is characterized in that: the material of said camshaft front end (1) is an Alloy Constructional Steel.
8. a kind of assembled camshaft according to claim 1 and 2 is characterized in that: the material of said axis body (6) is the 45# steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037731.4A CN102562201B (en) | 2012-02-20 | 2012-02-20 | A kind of assembled camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037731.4A CN102562201B (en) | 2012-02-20 | 2012-02-20 | A kind of assembled camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562201A true CN102562201A (en) | 2012-07-11 |
| CN102562201B CN102562201B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210037731.4A Active CN102562201B (en) | 2012-02-20 | 2012-02-20 | A kind of assembled camshaft |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787875A (en) * | 2012-08-23 | 2012-11-21 | 东风汽车公司 | Engine camshaft with oil storage tank |
| CN104295332A (en) * | 2013-07-16 | 2015-01-21 | 重庆长安汽车股份有限公司 | Combination type cam shaft with VVT oil way |
| CN105312860A (en) * | 2015-12-06 | 2016-02-10 | 十堰宏兆汽配实业有限公司 | Processing method for combined type cam shaft |
| CN105626176A (en) * | 2014-11-05 | 2016-06-01 | 株式会社瑞进凸轮轴 | Assembly method for assembling cam shaft |
| CN106121757A (en) * | 2016-08-17 | 2016-11-16 | 力帆实业(集团)股份有限公司 | Admission cam shaft of car engine |
| CN106337703A (en) * | 2016-11-02 | 2017-01-18 | 成都西菱动力科技股份有限公司 | Thermal coupled cam shaft and thermal coupling method |
| CN107243695A (en) * | 2017-07-18 | 2017-10-13 | 武汉华工激光工程有限责任公司 | A kind of composite engine hollow camshaft laser welding process method |
| CN108788717A (en) * | 2018-06-14 | 2018-11-13 | 成都金顶精密铸造有限公司 | A kind of assembly method of assembled camshaft |
| CN109048212A (en) * | 2018-08-07 | 2018-12-21 | 浙江卓驰机电科技有限公司 | A kind of Joining Technology of engine cam oiling pump cam |
| CN110524205A (en) * | 2018-05-23 | 2019-12-03 | 上海航浩汽车零部件有限公司 | Camshaft central siphon and its manufacturing method |
| CN113958685A (en) * | 2021-11-08 | 2022-01-21 | 重庆市巨亮机械制造有限责任公司 | Powder metallurgy camshaft end combination |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200949598Y (en) * | 2006-09-19 | 2007-09-19 | 刘素华 | Assembly cam axle |
| CN101131104A (en) * | 2006-08-23 | 2008-02-27 | 株式会社日立制作所 | Phase adjusting apparatus and a cam shaft phase adjusting apparatus for an internal combustion engine |
| US20080047515A1 (en) * | 2006-08-23 | 2008-02-28 | Aisin Seiki Kabushiki Kaisha | Valve timing control apparatus |
| CN201241735Y (en) * | 2008-07-14 | 2009-05-20 | 河南中轴集团有限公司 | Combined type cam axle |
| CN101733632A (en) * | 2009-12-23 | 2010-06-16 | 钢铁研究总院 | Method for manufacturing combined cam shaft |
-
2012
- 2012-02-20 CN CN201210037731.4A patent/CN102562201B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131104A (en) * | 2006-08-23 | 2008-02-27 | 株式会社日立制作所 | Phase adjusting apparatus and a cam shaft phase adjusting apparatus for an internal combustion engine |
| US20080047515A1 (en) * | 2006-08-23 | 2008-02-28 | Aisin Seiki Kabushiki Kaisha | Valve timing control apparatus |
| CN200949598Y (en) * | 2006-09-19 | 2007-09-19 | 刘素华 | Assembly cam axle |
| CN201241735Y (en) * | 2008-07-14 | 2009-05-20 | 河南中轴集团有限公司 | Combined type cam axle |
| CN101733632A (en) * | 2009-12-23 | 2010-06-16 | 钢铁研究总院 | Method for manufacturing combined cam shaft |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787875A (en) * | 2012-08-23 | 2012-11-21 | 东风汽车公司 | Engine camshaft with oil storage tank |
| CN102787875B (en) * | 2012-08-23 | 2014-12-17 | 东风汽车公司 | Engine camshaft with oil storage tank |
| CN104295332A (en) * | 2013-07-16 | 2015-01-21 | 重庆长安汽车股份有限公司 | Combination type cam shaft with VVT oil way |
| CN105626176A (en) * | 2014-11-05 | 2016-06-01 | 株式会社瑞进凸轮轴 | Assembly method for assembling cam shaft |
| CN105312860A (en) * | 2015-12-06 | 2016-02-10 | 十堰宏兆汽配实业有限公司 | Processing method for combined type cam shaft |
| CN106121757A (en) * | 2016-08-17 | 2016-11-16 | 力帆实业(集团)股份有限公司 | Admission cam shaft of car engine |
| CN106337703A (en) * | 2016-11-02 | 2017-01-18 | 成都西菱动力科技股份有限公司 | Thermal coupled cam shaft and thermal coupling method |
| CN106337703B (en) * | 2016-11-02 | 2018-07-20 | 成都西菱动力科技股份有限公司 | A kind of thermal coupling camshaft and thermal coupling methods |
| CN107243695A (en) * | 2017-07-18 | 2017-10-13 | 武汉华工激光工程有限责任公司 | A kind of composite engine hollow camshaft laser welding process method |
| CN110524205A (en) * | 2018-05-23 | 2019-12-03 | 上海航浩汽车零部件有限公司 | Camshaft central siphon and its manufacturing method |
| CN108788717A (en) * | 2018-06-14 | 2018-11-13 | 成都金顶精密铸造有限公司 | A kind of assembly method of assembled camshaft |
| CN109048212A (en) * | 2018-08-07 | 2018-12-21 | 浙江卓驰机电科技有限公司 | A kind of Joining Technology of engine cam oiling pump cam |
| CN113958685A (en) * | 2021-11-08 | 2022-01-21 | 重庆市巨亮机械制造有限责任公司 | Powder metallurgy camshaft end combination |
| CN113958685B (en) * | 2021-11-08 | 2024-03-12 | 重庆市巨亮机械制造有限责任公司 | Powder metallurgy camshaft end combination |
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| Publication number | Publication date |
|---|---|
| CN102562201B (en) | 2015-12-02 |
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