CN102734434B - A kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof - Google Patents
A kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof Download PDFInfo
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- CN102734434B CN102734434B CN201210198146.2A CN201210198146A CN102734434B CN 102734434 B CN102734434 B CN 102734434B CN 201210198146 A CN201210198146 A CN 201210198146A CN 102734434 B CN102734434 B CN 102734434B
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- sprocket wheel
- automatic gearbox
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Abstract
The invention discloses a kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof, this sprocket wheel comprises the sprocket body with central through bore, the inside and outside circle side face of sprocket body is respectively equipped with external tooth, sprocket body is provided with some axial through bore, a side of sprocket body is provided with abnormity depression, another side is provided with convex stupefied, described axial through bore through convex stupefied; The powder metallurgy constituent mass percentage of described sprocket body is: 2.0-4.0%Cu, 0.6-1.0%C, remaining as Fe and inevitable impurity.This automobile automatic gearbox camshaft timing sprocket wheel, precision is high, density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Employing powder metallurgy process makes, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.<!--1-->
Description
Technical field
The present invention relates to the component of automatic gearbox of vehicles, be specifically related to a kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof.
Background technique
Automobile automatic gearbox camshaft timing sprocket wheel, is used in automatic gearbox of vehicles, and product design is larger and complex-shaped, and Total Product hardness is very high with local hardness requirement, and product case depth requires also very strict.Traditional processing method cannot meet that product distributes in hardness, shape aligns, exact requirements in residual magnetic flux amount etc.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of this invention is to provide a kind of automobile automatic gearbox camshaft timing sprocket wheel, makes its precision high, and hardness is large, meets usage requirement.Another object of the present invention is to provide one and prepares automobile automatic gearbox camshaft timing sprocket wheel method, and to make the Product Precision prepared high, hardness is large, and cost is low, meets user demand.
Technological scheme: in order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of automobile automatic gearbox camshaft timing sprocket wheel, comprise the sprocket body with central through bore, the inside and outside circle side face of sprocket body is respectively equipped with external tooth, sprocket body is provided with some axial through bore, a side of sprocket body is provided with abnormity depression, another side is provided with convex stupefied, described axial through bore through convex stupefied; The powder metallurgy constituent mass percentage of described sprocket body is: 2.0-4.0%Cu, 0.6-1.0%C, remaining as Fe and inevitable impurity.
Prepare a method for automobile automatic gearbox camshaft timing sprocket wheel, comprise the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T;
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/mim;
(3) double frequency cycle machine is adopted to carry out high frequency to product;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
Beneficial effect: compared with prior art, automobile automatic gearbox camshaft timing sprocket wheel of the present invention, precision is high, density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.Employing powder metallurgy process makes, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.
Accompanying drawing explanation
Fig. 1 is the plan view of automobile automatic gearbox camshaft timing sprocket wheel;
Fig. 2 is the rear view of automobile automatic gearbox camshaft timing sprocket wheel.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
As depicted in figs. 1 and 2, automobile automatic gearbox camshaft timing sprocket wheel comprises the sprocket body 1 with central through bore 5, the inside and outside circle side face of sprocket body 1 is provided with external tooth 2, sprocket body 1 is provided with 4 axial through bore 4, a side of sprocket body 1 is provided with abnormity depression 3, another side is provided with convex stupefied 6, and axial through bore 4 is through convex stupefied 6.The powder metallurgy component (mass percent) of this sprocket wheel is: 2.0-4.0%Cu, 0.6-1.0%C, remaining as Fe and inevitable impurity.
This automobile automatic gearbox camshaft timing sprocket wheel, precision is high, density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.
Embodiment 1
The preparation method of automobile automatic gearbox camshaft timing sprocket wheel, comprises the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T; Wherein powder metallurgy component (mass percent) is: 2.0%Cu, 0.6%C, remaining as Fe and inevitable impurity.
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/mim;
(3) double frequency cycle machine is adopted to carry out high frequency to product, voltage 110KW, frequency 100KHZ;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
The important technological parameters of acceptable product is: density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.
This preparation method, adopts powder metallurgy process to make, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.
Embodiment 2
The preparation method of automobile automatic gearbox camshaft timing sprocket wheel, comprises the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T; Wherein powder metallurgy component (mass percent) is: 4.0%Cu, 1.0%C, remaining as Fe and inevitable impurity.
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/mim;
(3) double frequency cycle machine is adopted to carry out high frequency to product, voltage 110KW, frequency 100KHZ;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
The important technological parameters of acceptable product is: density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.
This preparation method, adopts powder metallurgy process to make, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.
Embodiment 3
The preparation method of automobile automatic gearbox camshaft timing sprocket wheel, comprises the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T; Wherein powder metallurgy component (mass percent) is: 3.0%Cu, 0.8%C, remaining as Fe and inevitable impurity.
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/mim;
(3) double frequency cycle machine is adopted to carry out high frequency to product, voltage 110KW, frequency 100KHZ;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
The important technological parameters of acceptable product is: density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.
This preparation method, adopts powder metallurgy process to make, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.
Embodiment 4
The preparation method of automobile automatic gearbox camshaft timing sprocket wheel, comprises the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T; Wherein powder metallurgy component (mass percent) is: 3.5%Cu, 0.9%C, remaining as Fe and inevitable impurity.
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/mim;
(3) double frequency cycle machine is adopted to carry out high frequency to product, voltage 110KW, frequency 100KHZ;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
The important technological parameters of acceptable product is: density: overall 6.7g/cm
3above, teeth portion 7.0g/cm
3above; Hardness: more than teeth portion HRA63, overall more than HV0.2150; Case depth: tooth top 0.6mm position more than HV0.2500; Hole location: below 0.1mm; Parallelism: below 0.1mm; Face rugosity: below 0.05mm; Residual magnetism amount: below 0.4mT.
This preparation method, adopts powder metallurgy process to make, and efficiently solves in the past the produce difficult points such as processing method cost of production is high, precision is low, bad ratio is high, fundamentally meets the requirement of product highi degree of accuracy, high-quality.
Claims (1)
1. prepare the method for automobile automatic gearbox camshaft timing sprocket wheel for one kind, described automobile automatic gearbox camshaft timing sprocket wheel comprises the sprocket body (1) with central through bore (5), the inside and outside circle side face of sprocket body (1) is respectively equipped with external tooth (2), sprocket body (1) is provided with some axial through bore (4), a side of sprocket body (1) is provided with abnormity depression (3), another side is provided with convex stupefied (6), and described axial through bore (4) is through convex stupefied (6); The powder metallurgy constituent mass percentage of described sprocket body (1) is: 2.0-4.0%Cu, 0.6-1.0%C, remaining as Fe and inevitable impurity; It is characterized in that, comprise the following steps:
(1) mixed-powder metallurgical composition, is shaped in a mold, forming pressure 750T;
(2) sinter, sintering temperature 1100-1120 DEG C, sintering velocity 80-100mm/min;
(3) double frequency cycle machine is adopted to carry out high frequency to product;
(4) magnetic particle flaw detector is adopted to carry out magnetic particle flaw detection to product;
(5) adopt degausser to product degaussing;
(6) adopt highi degree of accuracy deburring machine to product deburring;
(7) product examine, shipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198146.2A CN102734434B (en) | 2012-06-15 | 2012-06-15 | A kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198146.2A CN102734434B (en) | 2012-06-15 | 2012-06-15 | A kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734434A CN102734434A (en) | 2012-10-17 |
| CN102734434B true CN102734434B (en) | 2016-01-20 |
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| CN201210198146.2A Active CN102734434B (en) | 2012-06-15 | 2012-06-15 | A kind of automobile automatic gearbox camshaft timing sprocket wheel and preparation method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806726A (en) * | 2014-11-18 | 2015-07-29 | 长沙艾科瑞齿轮机械有限责任公司 | Gear |
| CN105240490A (en) * | 2015-10-19 | 2016-01-13 | 泰州市科诚汽车零配件有限公司 | Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel |
| CN107225247B (en) * | 2016-03-24 | 2024-04-12 | 扬州保来得科技实业有限公司 | Clutch pressure plate of automatic gearbox of automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200989433Y (en) * | 2006-12-21 | 2007-12-12 | 力帆实业(集团)有限公司 | Engine output sprocket |
| CN102049519A (en) * | 2010-12-31 | 2011-05-11 | 江苏双峰粉末冶金制品有限公司 | Manufacturing method of powder metallurgy chain wheel |
| CN201916455U (en) * | 2010-12-15 | 2011-08-03 | 吕元之 | Powder metallurgy chain wheel for sedan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105370A (en) * | 2003-09-30 | 2005-04-21 | Mitsubishi Materials Corp | Method of producing rotary body provided with pressure resistant face for sliding on circumferential face, such as gear |
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2012
- 2012-06-15 CN CN201210198146.2A patent/CN102734434B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200989433Y (en) * | 2006-12-21 | 2007-12-12 | 力帆实业(集团)有限公司 | Engine output sprocket |
| CN201916455U (en) * | 2010-12-15 | 2011-08-03 | 吕元之 | Powder metallurgy chain wheel for sedan |
| CN102049519A (en) * | 2010-12-31 | 2011-05-11 | 江苏双峰粉末冶金制品有限公司 | Manufacturing method of powder metallurgy chain wheel |
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| CN102734434A (en) | 2012-10-17 |
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