CN208951230U - A kind of circular arc profile cambered surface double helical tooth wheel set - Google Patents
A kind of circular arc profile cambered surface double helical tooth wheel set Download PDFInfo
- Publication number
- CN208951230U CN208951230U CN201821637235.1U CN201821637235U CN208951230U CN 208951230 U CN208951230 U CN 208951230U CN 201821637235 U CN201821637235 U CN 201821637235U CN 208951230 U CN208951230 U CN 208951230U
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- China
- Prior art keywords
- gear
- arc
- cylindrical external
- gear pair
- axial direction
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- Expired - Fee Related
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- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The utility model relates to a kind of circular arc profile cambered surface double helical tooth wheel sets, it is characterised in that gear pair includes cylindrical external gear and internal gear, and gear pair or so two symmetrical, and the field of conjugate action of gear pair is concave-convex arc surface, and the contact line of gear pair is camber line；The gear profile line of cylindrical external gear is concave arc, and along axial in arc-shaped, the crest top land of cylindrical external gear in axial direction gradually comes to a point the tooth form of cylindrical external gear；The gear profile line of meshed ring gear is dome arc, and along axial in arc-shaped, the root face of ring gear in axial direction gradually comes to a point the tooth form of ring gear；Beneficial effect is the gear pair by the way that the engaged transmission between male and fomale(M&F) circular arc can more steadily accurately realization axis be driven, and profile radius of curvature is big, easy running-in, and easily formation oil film, gear capacity improve, stress concentration reduction.
Description
Technical field
The utility model relates to mechanical transmission fields, more particularly to a kind of circular arc profile cambered surface double helical tooth wheel set.
Background technique
Gear drive is most widely used a kind of driving form in Present Mechanical Engineering, and transmission efficiency is high；Reliable operation；
Long service life；The power of applicable peripheral speed and transmitting is big.The gear pair transmission common for one kind, stable drive, and
The transmission that accurate transmission ratio can be provided, therefore be widely used between each axis.It is well known that the power between gear pair is transmitted
By the contact between the gear teeth, and the contact portion between the current gear pair gear teeth and the gear teeth is theoretically straight line, real
Border is one narrow rectangle (tooth surface has micro-strain after being pressurized), and contact area is limited, and tooth surface pressure is larger, tooth
Phenomena such as root stress is larger, is also easy to produce stress concentration, therefore fatigue fracture occurs for the gear teeth, overload fractures is frequent.
It is low in order to solve power density in currently available technology, it is driven unstable etc. technical bottleneck, the utility model mentions
Go out a kind of circular arc profile cambered surface double helical tooth wheel set, which not only can more surely and accurately realize that between centers is driven,
And gear teeth single-direction transmission bearing capacity can be greatly improved, tooth surface pressure is reduced, the gear teeth are not susceptible to be broken or fracture, and
Tooth surface is also hardly damaged.Both it had been able to satisfy the Practical Project demand in high-speed overload precision drive field, has filled up the relevant technologies sky
It is white, and can produce biggish social benefit and economic benefit.
Summary of the invention
A kind of circular arc profile cambered surface double helical tooth wheel set that in order to overcome the deficiencies of the prior art, the utility model provides,
It is characterized in that gear pair includes cylindrical external gear and internal gear, gear pair or so two symmetrical, two teeth of gear pair or so
Helix on direction is oppositely oriented, and escape is arranged in the middle part of gear pair, and the field of conjugate action of gear pair is concave-convex arc surface, gear
Secondary contact line is camber line；The gear profile line of cylindrical external gear is concave arc, and the tooth form of cylindrical external gear is along axial in circular arc
Shape, the crest top land of cylindrical external gear in axial direction gradually come to a point, and the flank profil section of cylindrical external gear in axial direction is each everywhere
It is different；The gear profile line of meshed ring gear is dome arc, and the tooth form of ring gear is along axial in arc-shaped, the tooth of ring gear
Root face in axial direction gradually comes to a point, and the flank profil section of cylindrical external gear in axial direction is different everywhere.
The utility model has the beneficial effects that: this kind of novel gear pair transmission when, the arc field of conjugate action of each gear teeth
Bearing capacity compared to plane is promoted significantly；Secondly outer gear ring gear teeth and with ring gear gear teeth theoretical contact line be an arc
Line, length are greater than the straight contact line under identical gear width, and therefore, the pressure of tooth surface is smaller, and the gear teeth are hardly damaged.
Detailed description of the invention
Fig. 1 is a kind of circular arc profile cambered surface double helical tooth wheel set-cylindrical external gear；
Fig. 2 is a kind of circular arc profile cambered surface double helical tooth wheel set-internal gear；
Fig. 3 is a kind of circular arc profile cambered surface double helical tooth wheel set；
Fig. 4 is a kind of circular arc profile cambered surface double helical tooth wheel set part engagement figure.
Specific embodiment
The embodiments of the present invention is described with reference to the drawings, the utility model is carried out below with reference to Fig. 1-Fig. 4 specific
Explanation.
A kind of circular arc profile cambered surface double helical tooth wheel set includes cylindrical external gear and ring gear, the cylindrical external gear and internal tooth
The field of conjugate action of circle is arc surface, and the tooth top of cylindrical external gear is along axial in the trend to come to a point, meshed ring gear tooth
Root is along axial direction also accordingly in the trend that comes to a point.
The gear profile line of cylindrical external gear and ring gear is circular arc, and above-mentioned novel gear pair is described in transmission
The field of conjugate action of cylindrical external gear and ring gear is arc surface, and gear drive bearing capacity improves；Cylindrical external gear and ring gear
Flank profil line is circular arc, and theoretical contact line is a camber line, and length is greater than the straight contact line under identical gear width, gear teeth table
The pressure in face accordingly reduces, and extends gear service life.
The above is only the better embodiment of invention, not does any restrictions to the utility model, all according to this
Utility model essence still falls within the utility model to any modification, change and equivalence changes made by embodiment of above
Within the protection scope of technology.
Claims (1)
1. a kind of circular arc profile cambered surface double helical tooth wheel set, it is characterised in that gear pair includes cylindrical external gear and internal gear, gear
Pair left and right two is symmetrical, and the helix on two teeth directional directions of gear pair or so is oppositely oriented, and setting is moved back in the middle part of gear pair
Cutter groove, the field of conjugate action of gear pair are concave-convex arc surface, and the contact line of gear pair is camber line；The gear profile line of cylindrical external gear is
Concave arc, the tooth form of cylindrical external gear is along axial in arc-shaped, and the crest top land of cylindrical external gear in axial direction gradually comes to a point, circle
The flank profil section of column external gear in axial direction is different everywhere；The gear profile line of meshed ring gear is dome arc, interior
Along axial in arc-shaped, the root face of ring gear in axial direction gradually comes to a point the tooth form of gear ring, and cylindrical external gear is along axial direction side
To flank profil section it is different everywhere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821637235.1U CN208951230U (en) | 2018-10-08 | 2018-10-08 | A kind of circular arc profile cambered surface double helical tooth wheel set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821637235.1U CN208951230U (en) | 2018-10-08 | 2018-10-08 | A kind of circular arc profile cambered surface double helical tooth wheel set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208951230U true CN208951230U (en) | 2019-06-07 |
Family
ID=66740836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821637235.1U Expired - Fee Related CN208951230U (en) | 2018-10-08 | 2018-10-08 | A kind of circular arc profile cambered surface double helical tooth wheel set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208951230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114194A (en) * | 2018-10-08 | 2019-01-01 | 天津工业大学 | A kind of circular arc profile double helical teeth wheel set of high-mechanic camber line contact |
-
2018
- 2018-10-08 CN CN201821637235.1U patent/CN208951230U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114194A (en) * | 2018-10-08 | 2019-01-01 | 天津工业大学 | A kind of circular arc profile double helical teeth wheel set of high-mechanic camber line contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20201008 |