CN102562201B - A kind of assembled camshaft - Google Patents
A kind of assembled camshaft Download PDFInfo
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- CN102562201B CN102562201B CN201210037731.4A CN201210037731A CN102562201B CN 102562201 B CN102562201 B CN 102562201B CN 201210037731 A CN201210037731 A CN 201210037731A CN 102562201 B CN102562201 B CN 102562201B
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- axis body
- camshaft
- cam
- powder metallurgy
- axle journal
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Abstract
The present invention discloses a kind of assembled camshaft, and its axis body is seamless steel pipe, and the inwall of a camshaft front end and axis body one end is connected; Axis body is pressed with paired P/M cam, between often pair of P/M cam, is provided with a powder metallurgy axle journal; The outer wall of one signal panel and axis body the other end is connected, and a bowl-type blocking coordinates with the inwall of axis body the other end.Advantage of the present invention is as follows: owing to adopting seamless steel pipe to manufacture axis body, not only reduce processing axle center oilhole operation, and compared with the camshaft weight saving 20 ~ 30% of same specification, meets automotive light weight technology requirement; Manufacture camshaft front end due to independent, the requirement of band phase discriminator camshaft can be met; Owing to independently manufacturing cam, make the manufacture method of camshaft possess higher flexibility, technique is simpler; Owing to adopting the high independently powder metallurgy axle journal of oil content, the frictional loss of engine valve system is reduced, and lubricating coefficient improves, thus extends product working life.
Description
Technical field
The present invention relates to automotive engine component, be specifically related to a kind of assembled camshaft that can mate with phase discriminator.
Background technique
The low-carbon alloy steel etc. (see QC/T544-2000 " camshaft technical specifications ") of current China camshaft of car engine material mainly chilled cast iron alloy, spheroidal graphite cast iron, high-quality steel or case-carbonizing.Whole camshaft adopts same material, and by producing qualified camshaft after heat treatment, machining, but preparation process more complicated, cost of production are high, and weight is large, does not meet Modern Automobile Engine lightweight requirements.And the camshaft performance of homogenous material cannot reach the requirement of vehicular engine camshaft design: core good toughness, not easy-rupturing; Cam hardness is high, wear resistance is good.Therefore, the innovation of camshaft is imperative.Assembled camshaft can solve above-mentioned technical barrier, but due to the development of engine technology, after using phase discriminator, must on camshaft the oil duct of complicated layout, this makes assembled camshaft face new technical barrier and challenge.
Summary of the invention
The object of this invention is to provide a kind of assembled camshaft mated with phase discriminator, its cam hardness is high, wear resistance good, axle core good toughness, not easy-rupturing, effectively can solve that weight is large, the problem of preparation process more complicated, reduces cost of production.
A kind of assembled camshaft of the present invention, comprises axis body, and axis body is seamless steel pipe, take axis body as carrier, and axis body is pressed with paired P/M cam, is provided with a powder metallurgy axle journal between often pair of P/M cam; The outer wall of one signal panel and axis body one end is connected;
Further, described P/M cam adopts the FN-0208 powdered metallurgical material that wear-resisting property is good to make, and makes its surface hardness be greater than 45HRC by heat treatment, and depth of hardening is greater than 2mm;
Further, P/M cam is arranged on axis body by hot pressing mode, becomes to be integrated with axis body;
Further, described powder metallurgy axle journal is arranged on axis body by hot pressing mode after being in saturation state by abundant immersion oil, becomes to be integrated with axis body;
Further, described powder metallurgy axle journal adopts FN-0208 powdered metallurgical material to make;
Further, on axis body, the inwall of the other end relative to signal panel and the phase discriminator connecting head of a camshaft front end are tightly connected; Described camshaft front end is also provided with phase discriminator positioning pin hole, first phase device Angle ambiguity oil duct, second phase device Angle ambiguity oil duct and phase discriminator mounting center screw;
Further, the material of described camshaft front end is Alloy Constructional Steel;
Further, the material of described axis body is 45# steel.
Advantage of the present invention is as follows: the advantage being integrated with steel camshaft and Chilled Cast Iron Camshaft two kinds of one-piece camshafts, overcome the intrinsic defect of above-mentioned two kinds of camshafts, camshaft wear resistance comparatively one-piece camshaft is good, axle journal mechanical strength and mechanical property better than integrated type Chilled Cast Iron Camshaft; Owing to adopting seamless steel pipe to manufacture axis body, not only reduce processing axle center oilhole operation, and compared with the camshaft weight saving 20 ~ 30% of same specification, meet automotive light weight technology requirement; Manufacture camshaft front end due to independent, band phase discriminator camshaft or the flexible requirements not with phase discriminator camshaft can be met; Owing to independently manufacturing cam, make the manufacture method of camshaft possess higher flexibility, technique is simpler; P/M cam adopts the FN-0208 powdered metallurgical material that wear-resisting property is good to make, and makes its surface hardness be greater than 45HRC by heat treatment, and depth of hardening is greater than 2mm, can ensure cam health wear-out life; Owing to adopting the high independently powder metallurgy axle journal of oil content, the frictional loss of engine valve system is reduced, and lubricating coefficient improves, thus extends product working life; The split type local of axle journal is arranged between cam pair, and the mode filled by hot pressing is pressed into main shaft, alleviates camshaft weight and ensure that camshaft profile technological requirement in local simultaneously; Powder metallurgy axle journal adopts the powdered metallurgical material of high oil content to make, the mode filled by hot pressing is coordinated with axis body, makes the lubricating coefficient of camshaft improve like this, and frictional force reduces, and can under the bad working environments of non lubricant oil, by the mode continuous firing of selflubricating.
Accompanying drawing explanation
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.
See a kind of assembled camshaft shown in Fig. 1, Fig. 2 and Fig. 3, its axis body 6 is seamless steel pipe, for four cylinder engine, on axis body 6, the corresponding cylinder body of four pairs of P/M cam 2(pair of cams 2 is equipped with in hot pressing), between often pair of P/M 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 end; The FN-0208 powdered metallurgical material that P/M cam 2 adopts wear-resisting property good makes, and makes its surface hardness be greater than 45HRC by heat treatment, and depth of hardening is greater than 2mm, makes P/M cam performance be better than chilled cast iron; P/M cam 2 totally eight, is divided into four groups, determines that its hot pressing is contained in the position on axis body, become to be integrated with axis body according to engine valve position.
Further, described powder metallurgy axle journal 5 also adopts 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 coordinate with the camshaft bearing bush seat of engine cylinder cover; Four powder metallurgy axle journals 5 are arranged on axis body 6 by hot pressing mode, become to be integrated with axis body;
Further, described camshaft front end 1 is provided with phase discriminator connecting head 9, and this phase discriminator connecting head coordinates with the inwall interference seal of axis body 6 one end; Described camshaft front end 1 is also provided with phase discriminator positioning pin hole 7, first phase device Angle ambiguity oil duct 8, second phase device Angle ambiguity oil duct 10 and phase discriminator mounting center screw 11.In order to solve baroque problem after camshaft matched-phase device (as needs design first phase device oil duct 8, second phase device oil duct 10 and phase discriminator mounting center screw 11 etc.), therefore specialized designs of the present invention independently camshaft front end 1, and adopt superior alloy steel to be material, the diameter that phase discriminator on camshaft front end 1 connects 9 is slightly larger than the diameter of main shaft body opening, by the mode that hot pressing fills, adopt the power press-in inner hole of spindle being greater than 12000N, make it to become to be integrated with main shaft.
The material of described axis body 6 is 45# steel, and the material of described camshaft front end 1 is Alloy Constructional Steel.
In order to ensure using effect, it is supporting that external coordination is passed through in signal panel 3 and bowl-type blocking 4, or from market kitting, technical requirements requires identical with one-piece camshaft.
After having assembled, adopt the processing technology identical with integrated type to complete processing, namely obtain the camshaft that cheapness, high-quality, weight about reduce by 20 ~ 30%.
Claims (4)
1. an assembled camshaft, comprise axis body (6), it is characterized in that: axis body (6) is seamless steel pipe, with axis body (6) for carrier, axis body (6) is pressed with paired P/M cam (2), between often pair of P/M cam, is provided with a powder metallurgy axle journal (5); One signal panel (3) are connected with the outer wall of axis body (6) end; Described P/M cam (2) adopts FN-0208 powdered metallurgical material to make, and makes its surface hardness be greater than 45HRC by heat treatment, and depth of hardening is greater than 2mm; P/M cam (2) is arranged on axis body (6) by hot pressing mode, becomes to be integrated with axis body; Be arranged on axis body (6) by hot pressing mode after described powder metallurgy axle journal (5) is in saturation state by abundant immersion oil, become to be integrated with axis body; Axis body (6) is upper to be tightly connected with the inwall of signal panel (3) the relative the other end and the phase discriminator connecting head (9) of a camshaft front end (1); Described camshaft front end (1) is also provided with phase discriminator positioning pin hole (7), first phase device Angle ambiguity oil duct (8), second phase device Angle ambiguity oil duct (10) and phase discriminator mounting center screw (11).
2. a kind of assembled camshaft according to claim 1, is characterized in that: described powder metallurgy axle journal (5) adopts FN-0208 powdered metallurgical material to make.
3. a kind of assembled camshaft according to claim 1 and 2, is characterized in that: the material of described camshaft front end (1) is Alloy Constructional Steel.
4. a kind of assembled camshaft according to claim 1 and 2, is characterized in that: the material of described axis body (6) is 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 CN102562201A (en) | 2012-07-11 |
| CN102562201B true CN102562201B (en) | 2015-12-02 |
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Family Applications (1)
| 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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| CN (1) | CN102562201B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108788717B (en) * | 2018-06-14 | 2021-04-06 | 成都金顶精密铸造有限公司 | Assembling method of combined 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4229464B2 (en) * | 2006-08-23 | 2009-02-25 | 株式会社日立製作所 | Phase variable device and camshaft phase variable device for internal combustion engine |
| JP4640616B2 (en) * | 2006-08-23 | 2011-03-02 | アイシン精機株式会社 | Valve timing control device |
| 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 |
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2012
- 2012-02-20 CN CN201210037731.4A patent/CN102562201B/en active Active
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| CN102562201A (en) | 2012-07-11 |
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