CN202883934U - High-performance motorcycle engine powder metallurgy shifting cam - Google Patents
High-performance motorcycle engine powder metallurgy shifting cam Download PDFInfo
- Publication number
- CN202883934U CN202883934U CN 201220604824 CN201220604824U CN202883934U CN 202883934 U CN202883934 U CN 202883934U CN 201220604824 CN201220604824 CN 201220604824 CN 201220604824 U CN201220604824 U CN 201220604824U CN 202883934 U CN202883934 U CN 202883934U
- Authority
- CN
- China
- Prior art keywords
- shifting cam
- powder metallurgy
- motorcycle engine
- actuation gear
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Gears, Cams (AREA)
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a high-performance motorcycle engine powder metallurgy shifting cam, which is a stepped shaft part. The high-performance motorcycle engine powder metallurgy shifting cam comprises a supporting shaft neck, a shifting cam, a driving gear mounting shaft neck and a driving gear which are positioned on the same axis and are sequentially arranged, wherein the driving gear is positioned between the shifting cam and the driving gear mounting shaft neck, is integrated with the supporting shaft neck, the shifting cam and the driving gear mounting shaft neck and has an integral structure which takes powder metallurgy as a main body; the tooth roots of wheel teeth of adjacent driving gears are in fillet transition; and wear-resistant composite layers are arranged on the outer wall of the supporting shaft neck, the outer wall of a cam of the shifting cam, the outer wall of the driving gear mounting shaft neck and the outer wall of the wheel teeth of the driving gear. The high-performance motorcycle engine powder metallurgy shifting cam has the advantages that the material utilization rate is high, the mechanical properties such as strength and fatigue resistance of the motorcycle engine shifting cam can be guaranteed, the wear resistance can be guaranteed, and the problem of stress concentration of the tooth roots of the driving gear can be solved.
Description
Technical field
The utility model relates to a kind of shifting cam, and more particularly, the utility model relates to a kind of motorcycle engine powder metallurgy shifting cam that adopts powder metallurgy process to make.
Background technique
The motorcycle engine shifting cam is used for motorcycle shift, generally actuation gear and shifting cam is fitted together now, and realizes gear shift by the driving gear drives shifting cam.The motorcycle engine shifting cam should guarantee certain intensity and anti-fatigue performance, and the cam outer wall of the while actuation gear gear teeth, shifting cam etc. has the surface of relative movement also should have preferably wear resistance.In actual the use, the motorcycle engine shifting cam of prior art exists lower column defects: actuation gear, shifting cam are generally middle-carbon steel or alloyed steel, form through processing, heat treatment, and the part amount of finish is large, and waste of material is also more; In order to guarantee the intensity of motorcycle engine shifting cam, anti-fatigue performance and wear resistance, prior art has adopted heat treatment process, with actuation gear, after heat-treating, shifting cam reaches higher hardness, but the actuation gear of higher hardness, the internal stress of shifting cam is larger, actuation gear particularly, adopt the plane to connect between the tooth root of adjacent teeth, the Plane intersects place of gear teeth flank and tooth root is wedge angle or less knuckle is arranged, easily producing stress concentrates, if the hardness after the gear teeth are processed is higher, it is concentrated that then gear teeth tooth root place just produces larger stress, very easily causes the fracture failure of drive gear teeth section; And if the stress that reduces actuation gear tooth root place by reducing goods hardness after the heat treatment is concentrated, then can cause the actuation gear gear teeth not wear-resisting, the working life of motorcycle engine shifting cam is shorter.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of stock utilization high, and internal stress is little, and wear resistance is good, can significantly reduce the concentrated high-performance motorcycle engine powder metallurgy shifting cam of stress of actuation gear tooth root.
The utility model is achieved through the following technical solutions technical goal.
High-performance motorcycle engine powder metallurgy shifting cam is the ladder axial workpiece, comprises the bearing journal, shifting cam, the actuation gear installation axle journal that are positioned on the same axis, are arranged in order; Its improvements are: also comprise actuation gear, described actuation gear is installed between the axle journal at shifting cam, actuation gear, is to install with bearing journal, shifting cam, actuation gear that axle journal is integrated, overall structure take powder metallurgy as main body; Round-corner transition between the adjacent described actuation gear gear teeth tooth root; The cam outer wall of described bearing journal outer wall, shifting cam, actuation gear are installed the axle journal outer wall, actuation gear gear teeth outer wall is provided with wear-resistant composite bed.
The further technological scheme of the utility model is: described actuation gear cross section is fan-shaped.
The another kind of further technological scheme of the utility model is: the described wear-resistant composite bed rare earth compound composite bed that is.
The utility model further technological scheme is: described wear-resistant composite bed thickness is 0.2-2.2mm.
The utility model compared with prior art has following good effect:
1, round-corner transition between the adjacent driven gear tooth tooth root has significantly reduced the stress of actuation gear gear teeth tooth roots and has concentrated.
2, adopt the powder metallurgical technique preparation, only need a small amount of machining, stock utilization is high, saves man-hour and cost of material.
3, the cam outer wall of bearing journal outer wall, shifting cam, actuation gear are installed the axle journal outer wall, actuation gear gear teeth outer wall is provided with wear-resistant composite bed, wear-resistant composite bed is the rare earth compound composite bed, significantly improves the wear resistance of motorcycle engine shifting cam.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the M-M sectional view of Fig. 1.
Fig. 3 is that the A of Fig. 1 is to view.
Fig. 4 is the I part enlarged diagram among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with embodiment.
High-performance motorcycle engine powder metallurgy shifting cam shown in the drawings, be the ladder axial workpiece, comprise the bearing journal 1, shifting cam 2, actuation gear installation axle journal 6, the actuation gear 5 that are positioned on the same axis, are arranged in order, actuation gear 5 is installed between the axle journal 6 at shifting cam 2, actuation gear, is to install with bearing journal 1, shifting cam 2, actuation gear that axle journal 6 is integrated, overall structure take powder metallurgy as main body; Round-corner transition between adjacent driven gear 5 gear teeth tooth roots; The cam outer wall of bearing journal 1 outer wall, shifting cam 2, actuation gear are installed axle journal 6 outer walls, actuation gear 5 gear teeth outer walls are provided with wear-resistant composite bed 3, preferred version: wear-resistant composite bed 2 is the rare earth compound composite bed, its thickness is 0.2-2.2mm, in the present embodiment, wear-resistant composite bed 3 is 0.8mm.
The present invention adopts the powder metallurgical technique preparation, only needs a small amount of machining, and stock utilization is high, saves man-hour, and comparatively economy reaches machining accuracy; Round-corner transition between adjacent driven gear 5 gear teeth tooth roots has significantly reduced the stress of actuation gear gear teeth tooth roots and has concentrated; The cam outer wall of bearing journal 1 outer wall, shifting cam 2, actuation gear are installed axle journal 6 outer walls, actuation gear 5 gear teeth outer walls are provided with wear-resistant composite bed 3, wear-resistant composite bed 3 is the rare earth compound composite bed, need not to heat-treat, therefore, can not produce internal stress, significantly improve simultaneously the wear resistance of motorcycle engine shifting cam.
Claims (4)
1. a high-performance motorcycle engine powder metallurgy shifting cam is the ladder axial workpiece, comprises the bearing journal (1), shifting cam (2), the actuation gear installation axle journal (6) that are positioned on the same axis, are arranged in order; It is characterized in that: also comprise actuation gear (5), described actuation gear (5) is positioned at shifting cam (2), drives to be positioned at and install between the axle journal (6), is to install with bearing journal (1), shifting cam (2), actuation gear that axle journal (6) is integrated, overall structure take powder metallurgy as main body; Round-corner transition between adjacent described actuation gear (5) gear teeth tooth root; The cam outer wall of described bearing journal (1) outer wall, shifting cam (2), actuation gear are installed axle journal (6) outer wall, actuation gear (5) gear teeth outer wall is provided with wear-resistant composite bed (3).
2. high-performance motorcycle engine powder metallurgy shifting cam according to claim 1, it is characterized in that: described actuation gear (5) cross section is fan-shaped.
3. high-performance motorcycle engine powder metallurgy shifting cam according to claim 1 and 2 is characterized in that: described wear-resistant composite bed (3) are the rare earth compound composite bed.
4. high-performance motorcycle engine powder metallurgy shifting cam according to claim 3, it is characterized in that: the thickness of described wear-resistant composite bed (3) is 0.2-2.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604824 CN202883934U (en) | 2012-11-16 | 2012-11-16 | High-performance motorcycle engine powder metallurgy shifting cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604824 CN202883934U (en) | 2012-11-16 | 2012-11-16 | High-performance motorcycle engine powder metallurgy shifting cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883934U true CN202883934U (en) | 2013-04-17 |
Family
ID=48075365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604824 Expired - Fee Related CN202883934U (en) | 2012-11-16 | 2012-11-16 | High-performance motorcycle engine powder metallurgy shifting cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633043A (en) * | 2014-12-26 | 2015-05-20 | 重庆赛飞斯金属材料有限公司 | Automotive window glass lifter fan-shaped toothed plate |
| CN106337923A (en) * | 2016-08-31 | 2017-01-18 | 青岛大学 | Cam gear assembly, slider gear assembly and transmission mechanism composed of cam gear assembly and slider gear assembly |
-
2012
- 2012-11-16 CN CN 201220604824 patent/CN202883934U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633043A (en) * | 2014-12-26 | 2015-05-20 | 重庆赛飞斯金属材料有限公司 | Automotive window glass lifter fan-shaped toothed plate |
| CN104633043B (en) * | 2014-12-26 | 2017-10-03 | 重庆赛飞斯金属材料有限公司 | A kind of automobile glass lifter sector rack |
| CN106337923A (en) * | 2016-08-31 | 2017-01-18 | 青岛大学 | Cam gear assembly, slider gear assembly and transmission mechanism composed of cam gear assembly and slider gear assembly |
| CN106337923B (en) * | 2016-08-31 | 2019-04-09 | 青岛大学 | The transmission mechanism of cam and rack unit, sliding block gear assembly and its composition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20161116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |