CN202531773U - Circular tooth-type gear - Google Patents
Circular tooth-type gear Download PDFInfo
- Publication number
- CN202531773U CN202531773U CN2012201773484U CN201220177348U CN202531773U CN 202531773 U CN202531773 U CN 202531773U CN 2012201773484 U CN2012201773484 U CN 2012201773484U CN 201220177348 U CN201220177348 U CN 201220177348U CN 202531773 U CN202531773 U CN 202531773U
- Authority
- CN
- China
- Prior art keywords
- tooth
- gear
- circular
- circle
- root portion
- 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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Abstract
The utility model discloses a circular tooth-type gear. Tooth crests (2), tooth roots (1) and tooth sides of the cross section of the circular tooth-type gear are in circular arc shapes; in the same gear, circle centers of the tooth crests (2) and the tooth roots (1) are in the same circumference; and the cross section of the tooth crests (2) and the tooth roots (1) is in a shape of connected circular arcs after partial circular arcs are cut off when small circles on the same circumference are tangent. When the circular tooth-type gear is manufactured, the circular arc of the gear can be machined by a circular arc cutter on a gear shaping machine, or formed by using a mould. With the adoption of the circular tooth-type gear for transmission, in the power transmission process of the gear, the engaging area of teeth is increased, and the friction of tooth surfaces is reduced; the transmission efficiency is improved; the fit clearance is decreased; and the noise is reduced.
Description
Technical field
The utility model relates to a kind of circular tooth-like gear that is used for the gap in power transmission field.
Background technique
Existing gear spur gear and the helical gear that uses, its profile of tooth is basically: tooth is to face directly or the cambered surface identical with the external diameter of gear, and tooth root portion faces directly or the curved surface of fillet, and flank is that facing directly of turning back adds to face directly or face directly and add curved surface.The tooth root portion of this gear is dark excessively, makes the gap of gear matched require big; The while gear because the slip of the flank of tooth causes surface friction drag big, causes the efficient of transmission of power low when rotating, noise is big.This gear receives the influence of modulus during fabrication, has to produce the diameter that needs and the gear of the number of teeth on demand.
Summary of the invention
The purpose of the utility model provides that a kind of tooth root portion is shallow, matching gap is little, from the gear of the shape that efficiency of movement is high, noise is little, and can produce the diameter that needs and the circular tooth-like gear of the number of teeth on demand.
For realizing above-mentioned purpose, tooth, tooth root portion and the flank of the cross section of the tooth-like gear of the described circle of the utility model all is circular shape; In same gear, the center of circle of tooth and tooth root portion is on same circumference, and the cross section of tooth and tooth root portion is that the roundlet on the same circumference removes the shape that the circular arc behind a part of circular arc line links to each other after tangent.
In order to improve accuracy of manufacturing and manufacturing efficiency; The tooth-like gear of the described circle of the utility model can adopt the circular arc of circular arc cutter Machining of Gear on gear shaping machine during fabrication, also can adopt mould-forming (mould-forming has cast molding, high pressure die casting moulding, cold-heading molding, hot rammer moulding, extrusion modling); Gear can be heat-treated or not heat-treat after making moulding as required, polishes to the flank of tooth afterwards.
In order to increase the area of contact of tooth, the wearing and tearing when reducing the gear rotation improve transmission efficiency, and tooth, tooth root portion and the flank of the tooth-like gear of the described circle of the utility model all manufacture circular shape.
In order to reduce the matching gap of gear, reduced noise, the tooth-like gear of the described circle of the utility model is in the tooth-like gear of same circle, and the center of circle of tooth and tooth root portion is on same circumference.
The circular tooth-like gear of the utility model simple in structure, be convenient to make, adopted circular tooth-like gear to carry out transmission after, gear has reduced the friction of the flank of tooth when having increased the bonding area of tooth in the power transmission process, improved transmission efficiency; Reduce matching gap, reduced noise.
Description of drawings
Fig. 1 is that the circular tooth-like gear of the utility model is the structural representation of the cross section of spur gear.
Fig. 2 is that the circular tooth-like gear of the utility model is the structural representation of helical gear cross section.
Fig. 3 is the tooth root portion and the tangent schematic representation of the roundlet of tooth on same circumference of the circular tooth-like gear of the utility model.
Embodiment
The circular tooth-like gear of the utility model tooth 2, tooth root portion 1 and the flank of cross section all be circular shape; In same gear, the center of circle of tooth 2 and tooth root portion 1 is on same circumference, and the cross section of tooth 2 and tooth is that the roundlet on the same circumference removes the shape that the circular arc behind a part of circular arc line links to each other after tangent.
In order to improve accuracy of manufacturing and manufacturing efficiency; The circular tooth-like gear of the utility model can adopt the circular arc of circular arc cutter Machining of Gear on gear shaping machine during fabrication, also can adopt mould-forming (mould-forming has cast molding, high pressure die casting moulding, cold-heading molding, hot rammer moulding, extrusion modling); Gear can be heat-treated or not heat-treat after making moulding as required, polishes to the flank of tooth afterwards.In order to increase the area of contact of tooth, the wearing and tearing when reducing the gear rotation improve transmission efficiency, and circular tooth-like gear teeth tips portion 2, tooth root portion 1 and flank all manufacture circular shape.In order to reduce the matching gap of gear, reduced noise, in the tooth-like gear of same circle, the center of circle of tooth 2 and tooth root portion 1 is on same circumference.
After the circular tooth-like gear of the utility model assembled, the tooth 2 of the tooth-like gear meshing part of intermeshing a pair of circle was intersected with tooth root portion 1 each other; During rotation, the circular arc of the circular arc of the tooth of the driving gear of mate and the tooth of driven gear is fitted fully, does not have slippage between tooth and the tooth, forms the transmission of rolling type, and the frictional force of generation is very little, has improved transmission efficiency.
Claims (4)
1. tooth-like gear of circle, it is characterized in that: the tooth of the cross section of circular tooth-like gear (2), tooth root portion (1) and flank all are circular shape; In same gear, the center of circle of tooth (2) and tooth root portion (1) is on same circumference, and the cross section of tooth (2) and tooth root portion (1) is that the roundlet on the same circumference removes the shape that the circular arc behind a part of circular arc line links to each other after tangent.
2. the tooth-like gear of circle according to claim 1 is characterized in that: circular tooth-like gear can adopt the circular arc of circular arc cutter Machining of Gear on gear shaping machine during fabrication, perhaps adopts mould-forming; Gear can be heat-treated or not heat-treat after making moulding as required, polishes to the flank of tooth afterwards.
3. the tooth-like gear of circle according to claim 1 is characterized in that: the tooth of circular tooth-like gear (2), tooth root portion (1) and flank all manufacture circular shape.
4. the tooth-like gear of circle according to claim 1 is characterized in that: circular tooth-like gear is in the tooth-like gear of same circle, and the center of circle of tooth (2) and tooth root portion (1) is on same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201773484U CN202531773U (en) | 2012-04-25 | 2012-04-25 | Circular tooth-type gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201773484U CN202531773U (en) | 2012-04-25 | 2012-04-25 | Circular tooth-type gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531773U true CN202531773U (en) | 2012-11-14 |
Family
ID=47132960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201773484U Expired - Fee Related CN202531773U (en) | 2012-04-25 | 2012-04-25 | Circular tooth-type gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151457A (en) * | 2016-09-09 | 2016-11-23 | 吉立万 | A kind of gear |
-
2012
- 2012-04-25 CN CN2012201773484U patent/CN202531773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151457A (en) * | 2016-09-09 | 2016-11-23 | 吉立万 | A kind of gear |
| CN106151457B (en) * | 2016-09-09 | 2019-05-24 | 吉立万 | A kind of gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20140425 |