CN204691843U - Changeable air valve powder metallurgy VVT stator - Google Patents
Changeable air valve powder metallurgy VVT stator Download PDFInfo
- Publication number
- CN204691843U CN204691843U CN201520389827.6U CN201520389827U CN204691843U CN 204691843 U CN204691843 U CN 204691843U CN 201520389827 U CN201520389827 U CN 201520389827U CN 204691843 U CN204691843 U CN 204691843U
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- powder metallurgy
- stator
- boss
- vvt
- stator boss
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Abstract
The utility model discloses changeable air valve powder metallurgy VVT stator, comprise powder metallurgy cirque body, powder metallurgy stator boss and the fan groove for blade oscillating, it is characterized in that: described powder metallurgy stator boss is equidistant is provided with 5, the width of 5 powder metallurgy stator boss, consistent to projecting inward height; Be equipped with bolt mounting holes at the middle part of 5 powder metallurgy stator boss, the side outside at the upper edge of 5 bolts installations is equipped with draining air vent; Described powder metallurgy composition with the addition of plasticizer and micro mist wax, significantly improves the intensity of product.This changeable air valve powder metallurgy VVT stator, because entirety is that high-strength powder metallurgical makes, and stator boss establishes identical 5, so structure is more reasonable, profile is more attractive in appearance, and precision is high, hardness is high, lightweight, cost of production is low, can raise the efficiency and working life.
Description
Technical field
The utility model relates to a kind of improvement of changeable air valve VVT stator, specifically a kind of changeable air valve powder metallurgy VVT stator.
Background technique
As everyone knows, in internal-combustion engine, VVT stator is the important composition parts of Variable Valve Time VVT system, for lowering throttle inflow amount at different rotating speeds, improving combustion efficiency, improving engine power and reducing exhaust emissions.The VVT stator of current use, as shown in Figure 4, comprises the cirque body 1 of smooth outer surface, stator boss 2 against rotor perisporium, for the fan groove 3 of blade oscillating; Described stator boss 2 is provided with 4, and one of them is comparatively large, other 3 less; Be provided with bolt mounting holes 4 at the middle part of stator boss 2, be provided with draining air vent 5 in the side that the opening's edge of bolt mounting holes 4 is outside.Current this VVT stator adopts middle-carbon steel or alloyed steel to make through processing, heat treatment, and its deficiency is: complex-shaped due to VVT stator, and the dimension precision requirement that face let out by oil is very high, so complex manufacturing, produce and treatment cost high; And structure is also not too reasonable, causes efficiency low.By test, ordinary powder metallurgy technology is adopted also to be difficult to realize high density, high strength and high-precision requirement.
Summary of the invention
The purpose of this utility model is to provide one, and not only precision is high, hardness is high, and structure more reasonable, lightweight, can raise the efficiency low with working life, cost of production, production technology can be simplified, its density can reach 7.4g/cm
3-7.5g/cm
3changeable air valve powder metallurgy VVT stator.
In order to reach above object, the technological scheme that the utility model adopts is: this changeable air valve powder metallurgy VVT stator, comprise the powder metallurgy cirque body of smooth outer surface, against the powder metallurgy stator boss of rotor perisporium and the fan groove for blade oscillating, powder metallurgy stator boss and the toric inwall of powder metallurgy are combined as a whole, it is characterized in that: described powder metallurgy stator boss is equidistant is provided with 5, the width of 5 powder metallurgy stator boss, consistent to projecting inward height; Be equipped with bolt mounting holes at the middle part of 5 powder metallurgy stator boss, be equipped with draining air vent in the side that the upper edge of 5 bolt mounting holes is outside; The inner side surface of 5 described powder metallurgy stator boss is that radius is identical and to the consistent stator shaft orientation arc wall of powder metallurgy cirque body centre distance; The both sides of 5 described powder metallurgy stator boss are stator next door, and the end in stator next door is equipped with chamfering; Described powder metallurgy cirque body and powder metallurgy stator boss adopt powder metallurgy pressing, sintering system in aggregates.
The utility model is also implemented by following measure:
The powder metallurgy adopted is by plasticizer 0.3%, carbon dust 0.5%, copper powder 2%, nickel 1.5%, micro mist wax 0.5%, and surplus is water-atomized iron powder composition.
The toric outer diameter of described powder metallurgy is 85mm, and inner diameter is 77mm, and error is+0.050mm; Be highly 23.45mm, error is+0.100mm.
Described powder metallurgy stator boss inboard width is 20mm, outside width is 24mm, and 5 stator shaft orientation arc walls are 26.91mm to the distance at powder metallurgy cirque body center, and error is+0.050mm, be 11.59mm to projecting inward height, error is+0.050mm.
The beneficial effects of the utility model are: this changeable air valve powder metallurgy VVT stator, and because entirety is powder metallurgy cirque body, powder metallurgy stator boss equidistantly establishes 5, and structure is more reasonable, and profile is more attractive in appearance; Once suppress owing to have employed high-strength powder metallurgical, sinter, negative shaping is shaping, so precision is high, hardness is high, lightweight, cost of production is low, can raise the efficiency and working life.Through overtesting, its product density reaches 7.4g/cm
3-7.5g/cm
3, tensile strength reaches 800mpa, the specification precision of product.
Accompanying drawing explanation
Fig. 1 is structure schematic top plan view of the present utility model.
Fig. 2 is structure elevational schematic view of the present utility model.
Fig. 3 is that structure of the present utility model is along A-A cross-sectional schematic.
Fig. 4 is the VVT stator schematic top plan view used at present.
In figure: 1, powder metallurgy cirque body; 2, powder metallurgy stator boss; 3, fan groove; 4, bolt mounting holes; 5, draining air vent; 6, stator shaft orientation arc wall; 7, stator next door; 8, chamfering.
Embodiment
The utility model is made with reference to Fig. 1, Fig. 2, Fig. 3.This changeable air valve powder metallurgy VVT stator, comprise the powder metallurgy cirque body 1 of smooth outer surface, against the powder metallurgy stator boss 2 of rotor perisporium and the fan groove 3 for blade oscillating, powder metallurgy stator boss 2 is combined as a whole with the inwall of powder metallurgy cirque body 1, it is characterized in that: described powder metallurgy stator boss 2 is equidistant is provided with 5, the width of 5 powder metallurgy stator boss 2, consistent to projecting inward height; Be equipped with bolt mounting holes 4 at the middle part of 5 powder metallurgy stator boss 2, be equipped with draining air vent 5 in the side that the upper edge of 5 bolt mounting holes 4 is outside; The inner side surface of 5 described powder metallurgy stator boss 2 is that radius is identical and to the consistent stator shaft orientation arc wall 6 of powder metallurgy cirque body 1 centre distance; The both sides of 5 described powder metallurgy stator boss 2 are stator next door 7, and the end in stator next door 7 is equipped with chamfering 8; Described powder metallurgy cirque body 1 and powder metallurgy stator boss 2 adopt powder metallurgy pressing, sintering system in aggregates.
As improvement of the present utility model: the outer diameter of described powder metallurgy cirque body 1 is 85mm, and inner diameter is 77mm, and error is+0.050mm; Be highly 23.45mm, error is+0.100mm.
Described powder metallurgy stator boss 2 inboard width is 20mm, outside width is 24mm, and the distance at 5 stator shaft orientation arc wall 6 to powder metallurgy cirque body 1 centers is 26.91mm, and error is+0.050mm, be 11.59mm to projecting inward height, error is+0.050mm.
The powder metallurgy adopted is by plasticizer 0.3%, carbon dust 0.5%, copper powder 2%, nickel 1.5%, micro mist wax 0.5%, and surplus is water-atomized iron powder composition.
The making step of this changeable air valve powder metallurgy VVT stator comprises:
(1), by following weight percentage take each raw material: plasticizer 0.3%, carbon dust 0.5%, copper powder 2%, nickel 1.5%, micro mist wax 0.5%, surplus is water-atomized iron powder.
(2), batch mixing: the batch material mixing that will take by step (1) with batch mixer, mixes 1 hour, deposit 24 hours.
(3) suppress: by the batch mixing produced in step (2), load the mould inner pressure system made in advance, when compressing, blank pressed density is controlled at 6.95g/cm
3-7.0/cm
3in scope.
(4), sinter: during sintering, through dewaxing section, the micro mist wax of interpolation and plasticizer are effectively volatilized, in dewaxing process, sofening treatment is carried out to blank ferrous powder granules, in high-temperature sintering process, make ferrous powder granules organically be combined with the alloy powder of interpolation, realize alloyage.
(5), bear shaping: rotor blank step (4) produced, put into negative shaping die cavity, mould will move up and down with die cavity, and the amount of moving up and down is equal, bidirection press shaping, avoids occurring CONCENTRIC REDUCER during shaping; Due to blank sofening treatment in sintering process in negative reforming process, the fibrous structure of effective softening ferrous powder granules, reduces resistance during plastic deformation; Add in the process of heavy reduction in negative shaping, blank plastic deformation is effective, and improve product density, density reaches 7.4g/cm
3-7.5g/cm
3, tensile strength reaches 800mpa, the specification precision of product; Demoulding coefficient due to adopt be negative shaping, rebound coefficient and demoulding frictional force less, improve die life, reduce die cost, be conducive to the industrialization of VVT rotor.
Fig. 4 gives the VVT stator schematic top plan view used at present, comprises the cirque body 1 of smooth outer surface, stator boss 2 against rotor perisporium, for the fan groove 3 of blade oscillating; Compared with the utility model, described stator boss 2 only has 4, and one of them is comparatively large, other 3 less; Be provided with bolt mounting holes 4 at the middle part of stator boss 2, one of them is comparatively large, is provided with draining air vent 5 in the side that the opening's edge of bolt mounting holes 4 is outside; Cirque body 1 and stator boss 2 adopt middle-carbon steel or alloyed steel to process, and manufacturing procedure is complicated, and cost of production is high, and in use indication structure is also unreasonable, and efficiency is low.
Claims (3)
1. changeable air valve powder metallurgy VVT stator, comprise the powder metallurgy cirque body (1) of smooth outer surface, the powder metallurgy stator boss (2) against rotor perisporium and the fan groove (3) for blade oscillating, powder metallurgy stator boss (2) is combined as a whole with the inwall of powder metallurgy cirque body (1), it is characterized in that: described powder metallurgy stator boss (2) is equidistant is provided with 5, the width of 5 powder metallurgy stator boss (2), consistent to projecting inward height; Be equipped with bolt mounting holes (4) at the middle part of 5 powder metallurgy stator boss (2), be equipped with draining air vent (5) in the side that the upper edge of 5 bolt mounting holes (4) is outside; The inner side surface of 5 described powder metallurgy stator boss (2) is that radius is identical and to the consistent stator shaft orientation arc wall (6) of powder metallurgy cirque body (1) centre distance; The both sides of 5 described powder metallurgy stator boss (2) are stator next door (7), and the end of stator next door (7) is equipped with chamfering (8); Described powder metallurgy cirque body (1) and powder metallurgy stator boss (2) are made in aggregates by employing powder metallurgy pressing, sintering.
2. changeable air valve powder metallurgy VVT stator according to claim 1, is characterized in that: the outer diameter of described powder metallurgy cirque body (1) is 85mm, and inner diameter is 77mm, and error is+0.050mm; Be highly 23.45mm, error is+0.100mm.
3. changeable air valve powder metallurgy VVT stator according to claim 1, it is characterized in that: described powder metallurgy stator boss (2) inboard width is 20mm, outside width is 24mm, 5 stator shaft orientation arc walls (6) are 26.91mm to the distance at powder metallurgy cirque body (1) center, error is+0.050mm, be 11.59mm to projecting inward height, error is+0.050mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389827.6U CN204691843U (en) | 2015-06-09 | 2015-06-09 | Changeable air valve powder metallurgy VVT stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389827.6U CN204691843U (en) | 2015-06-09 | 2015-06-09 | Changeable air valve powder metallurgy VVT stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204691843U true CN204691843U (en) | 2015-10-07 |
Family
ID=54232146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520389827.6U Expired - Fee Related CN204691843U (en) | 2015-06-09 | 2015-06-09 | Changeable air valve powder metallurgy VVT stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204691843U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610251A (en) * | 2015-10-19 | 2016-05-25 | 泰州市科诚汽车零配件有限公司 | Powder metallurgy automobile engine stator and manufacturing methods thereof |
| CN106041063A (en) * | 2016-06-30 | 2016-10-26 | 碧梦技(上海）复合材料有限公司 | Powder metallurgy sealing part and manufacturing process thereof |
| CN106762002A (en) * | 2017-01-16 | 2017-05-31 | 扬州保来得科技实业有限公司 | Automobile VVT high accuracy stators and preparation method thereof |
-
2015
- 2015-06-09 CN CN201520389827.6U patent/CN204691843U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610251A (en) * | 2015-10-19 | 2016-05-25 | 泰州市科诚汽车零配件有限公司 | Powder metallurgy automobile engine stator and manufacturing methods thereof |
| CN106041063A (en) * | 2016-06-30 | 2016-10-26 | 碧梦技(上海）复合材料有限公司 | Powder metallurgy sealing part and manufacturing process thereof |
| CN106762002A (en) * | 2017-01-16 | 2017-05-31 | 扬州保来得科技实业有限公司 | Automobile VVT high accuracy stators and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160603 Address after: 271105 Shandong city of Laiwu Province Steel City Xin Xiang Zhenming Street No. 9 Patentee after: Laiwu Keli New Material Co., Ltd. Address before: 271105 Shandong city of Laiwu Province Steel City Xin Xiang Zhenming Street No. 9 Patentee before: Lv Yuanzhi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20190609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |