CN85200867U - Gear with flexible teeth - Google Patents
Gear with flexible teeth Download PDFInfo
- Publication number
- CN85200867U CN85200867U CN 85200867 CN85200867U CN85200867U CN 85200867 U CN85200867 U CN 85200867U CN 85200867 CN85200867 CN 85200867 CN 85200867 U CN85200867 U CN 85200867U CN 85200867 U CN85200867 U CN 85200867U
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- CN
- China
- Prior art keywords
- gear
- flexible teeth
- teeth
- load
- utility
- 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 - Lifetime
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Abstract
The utility model relates to a gear with flexible teeth. Compared with a common gear, the bending and the elastic deformation of the gear with flexible teeth are larger. The root part of the gear with flexible teeth is provided with a circular arc groove and is contact of curve with a uniform strength beam. Various factors which influence eccentric load are further compensated, and load distribution is more uniform. Dynamic load and noise are reduced, weight coefficient is enlarged, and the carrying capacity of the utility model is larger than that of a corresponding common gear; slightly low machining accuracy is allowed on the gear with flexible teeth. The utility model is suitable for being used in transmission with large transmitting ratio, low speed and heavy load, and is more suitable for being used in the transmission of a planetary gear with few teeth difference and multiple shafts. High reliability.
Description
The invention belongs to mechanical field.Here said flexible tooth gear is meant with corresponding ordinary gear and compares that the rigidity of its gear teeth is little, and amount of deflection is big, and resiliently deformable is big.
As everyone knows, the power train of ordinary gear has the elastic qualities system of engagement deviation, thereby, in fact in how much, motion, dynamics all certain degree ground departed from conjugate condition and desirable engagement situation, quite big to transmission accuracy, stationarity, reliability and bearing capacity influence.Main surface is: (1) changes gear teeth contact position, length, and forming unbalance loading even an end in contact, local load and stress increases greatly.(2) because the non-conjugated property of engagement process, even make and become intermittently continuously, cause angular velocity varies, noise, vibrations and dynamic load.For realizing all carrying, brainstrust has been made some schemes, such as attenuate tip edge, the finishing gear teeth, change profile of tooth, tooth depth, change structural configuration etc., but does not all obtain the result who feels quite pleased.
Task of the present invention is under the constant condition of gear teeth conjugate surface and intensity, increases the flexibility and the resiliently deformable of the gear teeth as much as possible, makes it near desirable engagement.Be characterized in partly processing an arc groove (5) at the every gear teeth of ordinary gear (1) tooth root inoperative, this groove edge is made up of straight line (3) and circular arc (4), and with to press curve (2) that the principle of equal strength determines tangent or near tangent.Like this, though its working portion conjugate surface and highly constant, total tooth depth then increases greatly, causes when the similarity condition stand under load, and total amount of deflection is more much bigger than the corresponding common gear teeth, thereby has significantly reduced the influence of various meshing errors.Just by 20 ° of standard tooth forms of working pressure angle, overlap coefficient can reach 2.Consequently load distribution is more even, and all corresponding decline of local maximum contact stress and flexural stress and sound pressure level has improved the bearing capacity and the reliability of gear; And can allow accuracy of manufacturing low slightly, to reduce cost.This flexible tooth gear is not only applicable to big load, big speed ratio, than the gear transmission and the tooth bar transmission of low speed, and be more suitable for multiaxis transmission, planetary pinion transmission and few tooth difference transmission.Latter's internal gear pair then can be removed from and floating or elastic structure if become flexible tooth, and the effect that acquisition is all carried.So not only can simplify the internal structure of an organization, and overlap coefficient may be bigger, above-mentioned superiority may be more remarkable.
Make flexible tooth gear pair and internal gear pair, tried out on machines such as hoister, obtained good result.
Accompanying drawing is a flexible tooth gear tooth schematic representation.(1) is the ordinary gear gear teeth among the figure; (2) be ordinary gear gear teeth beam of uniform strength curve; (3) be tooth root arc groove straight section; (4) be tooth root arc groove circular arc portion.
Claims (2)
1, a kind of flexible tooth gear is characterized in that at per tooth [1] tooth root one arc groove [5] being arranged, and with to press beam of uniform strength curve [2] that the principle of equal strength determines tangent or near tangent.
2, the arc groove edge of flexible tooth gear tooth root as claimed in claim 1 is made up of straight line (3) and circular arc (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200867 CN85200867U (en) | 1985-04-18 | 1985-04-18 | Gear with flexible teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200867 CN85200867U (en) | 1985-04-18 | 1985-04-18 | Gear with flexible teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85200867U true CN85200867U (en) | 1985-12-20 |
Family
ID=4797064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85200867 Expired - Lifetime CN85200867U (en) | 1985-04-18 | 1985-04-18 | Gear with flexible teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85200867U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417841C (en) * | 2004-02-24 | 2008-09-10 | 株式会社恩普乐 | Gear |
| CN111322374A (en) * | 2020-03-29 | 2020-06-23 | 华南理工大学 | Elastic variable transmission ratio line gear mechanism |
-
1985
- 1985-04-18 CN CN 85200867 patent/CN85200867U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417841C (en) * | 2004-02-24 | 2008-09-10 | 株式会社恩普乐 | Gear |
| CN111322374A (en) * | 2020-03-29 | 2020-06-23 | 华南理工大学 | Elastic variable transmission ratio line gear mechanism |
| CN111322374B (en) * | 2020-03-29 | 2021-11-19 | 华南理工大学 | Elastic variable transmission ratio line gear mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |