CN205036785U - Face gear pair - Google Patents
Face gear pair Download PDFInfo
- Publication number
- CN205036785U CN205036785U CN201520633105.0U CN201520633105U CN205036785U CN 205036785 U CN205036785 U CN 205036785U CN 201520633105 U CN201520633105 U CN 201520633105U CN 205036785 U CN205036785 U CN 205036785U
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- steamboat
- teeth
- gear pair
- gear
- face gear
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Abstract
The utility model provides a face gear pair, including the face gear and with face gear engagement complex steamboat, its characterized in that: be on a parallel with steamboat axis planar cutting the tooth dentification arc cross -section of steamboat, the arc section thickness is reduced to both sides by the centre gradually, the arc cross -section with the intersecting line of tooth face is the curve. Axial direction's correction of the flank shape is carried out through the steamboat to with face gear engagement for the little teeth of a cogwheel are rectangular to have improved the tolerance of steamboat axial installation in -process to the centre is thick, both sides are thin, has reduced because installation error produces the possibility on edge basis.
Description
Technical field
The utility model relates to gear transmission technology field, particularly a kind of face gear pair.
Background technique
Face gear transmission is a kind of type of belt drive that cylindrical gears and cone gear engagement are formed, and have compact structure, velocity ratio is large, contact ratio is high, install the advantage that simple and easy and small gear is easy to manufacture and change, it has great advantage in distributing and converging.Owing to having above advantage, the transmission application of face gear between concurrent aces gets more and more.Because total conjugated face gear pair is very responsive to processing, alignment error, desirable face gear transmission should be Local conjugation gear pair.In prior art, by steamboat and the existing point cantact face gear transmission of face gear number of teeth difference, but because contact path orthogonal is in face Gear Root cone, easily produces the problem of EDGE CONTACT, make the contact position of face gear be positioned at tooth root position.Even if correction of the flank shape is carried out in gear-profile direction, opposite, make face gear pair obtain ekaconjugation characteristic and obtain inclination contact path, but responsive equally for the axial alignment error of small gear.
Model utility content
In order to solve in existing gear transmission, cylindrical gears and cone gear engagement fit are to the insoluble problem of the axial alignment error sensitive issue of steamboat, and the utility model provides a kind of new face gear pair.
The utility model provides a kind of face gear pair, the steamboat comprising face gear and coordinate with described gears meshing; It is characterized in that: be parallel to the cog shape camber cross section that described steamboat axial plane cuts described steamboat; Described arc section thickness is reduced to both sides gradually by centre; The intersection of described arc section and the described teeth flank of tooth is curve.
By carrying out the correction of the flank shape of axial direction to the steamboat with face gears meshing, make little gear teeth length direction thick middle, both sides thin, improve the tolerance in the axial installation process of steamboat, reduce because alignment error produces the possibility on basis, edge.
Optionally, the intersection of described arc section and described teeth is the first parabola.
Because parabola has good transient characteristic, correction of the flank shape is carried out according to the first parabola in steamboat teeth directional direction, gear-driven mesh vibration and noise can be improved.
Optionally, described first parabolical summit is positioned at the mid point of described teeth axial direction.
Optionally, the intersection of described arc section and described teeth is circular curve.
Optionally, the number of teeth of described steamboat is identical with the product shape tooth number forming described gear; Perpendicular to described little wheel axis plane cutting described in teeth formed flank profil cross section; The intersection of described flank profil cross section and the described teeth flank of tooth is the second parabola.
Steamboat flank profil direction is carried out practice Buddhism or Taoism process and do not carry out correction of the flank shape to bull wheel, make to obtain ekaconjugation characteristic when steamboat and bull wheel engagement, in conjunction with axial direction correction of the flank shape obtain all tilt with tooth length direction in flank profil direction contact path, the gear-driven stability in the face that further increases, reduces vibration & noise during transmission.
Optionally, described second parabolical summit is positioned at the zone line of described teeth.
Optionally, described gear pair is spur gear pair, helical gear pair or curved tooth wheel set.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment face gear pair cooperating structure schematic diagram;
Fig. 2 is the utility model embodiment face gear pair medium and small gear teeth dental structure schematic diagram.
Embodiment
For making those skilled in the art better understand the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model embodiment face gear pair cooperating structure schematic diagram, and the face gear pair as can be seen from Figure 1 in the present embodiment comprises face gear 1 and the steamboat 2 with face gear 1 engagement fit.Wherein face gear 1 is cut to be formed by product shape wheel 3 and does not carry out profile modification process, and steamboat 2 is through correction of the flank shape process.Fig. 2 is steamboat 2 teeth 11 structural portion schematic diagram in the gear pair of the utility model embodiment face, and wherein intermittent line represents in the present embodiment is the steamboat shape before correction of the flank shape, steamboat 2 shape coordinated with face gear 1 after solid line represents correction of the flank shape.
Small gear not correction of the flank shape in face gear pair in the prior art, therefore when it coordinates the position of installing and must ensure axial direction with face gear 1, makes the axes intersect of steamboat 2 axis and face gear 1.And it is less in the gap the closer to face gear 1 axial location steamboat 2 and face gear 1, as inaccurate in coordinated, cause pinion head and gearwheel tooth root in running to produce EDGE CONTACT problem, cause the tooth root of face gear 1 small gear to produce face contact patch, affect gear-driven accuracy and cause the strength of gear teeth to increase.In order to overcome this problem, core point of the present utility model on steamboat 2 axial direction, carries out correction of the flank shape process to the teeth 11 of steamboat 2 obtain axial direction correction of the flank shape teeth face.
In order to describe the shape of the steamboat 2 in the present embodiment, in the present embodiment, introduce virtual outside cutting surface.Form an arc section with the teeth 11 of the plane cutting steamboat 2 being parallel to little wheel axis, by zone line to both sides transition, the thickness on this arc section diminishes gradually, and the intersection of arc section and teeth 11 flank of tooth is curve; On teeth 11 axial direction, namely define the cydariform that centre is thicker, edge is thinner.Due to steamboat 2 is carried out above correction of the flank shape, can alleviate to a certain extent near steamboat 2 tooth top of the position of face gear 1 axis and bull wheel tooth root EDGE CONTACT problem in Meshing Process of Spur Gear, make face path elongated along tooth length direction, inhibit mesh vibration, decrease meshing noise.In the present embodiment, the axial direction correction of the flank shape actual employing grinding wheel of steamboat 2 obtains along steamboat 2 tooth length direction walking curve, and the walking curve of grinding wheel is parabola, and the intersection of the arc section obtained and teeth 11 flank of tooth is also just first parabola shaped.Parabola shaped have good transition characteristic, can ensure the smooth transition of engaging in gear transmission process, suppresses the generation of vibration.In the present embodiment, the first parabolical correction of the flank shape coefficient is between 0.003-0.005, certainly can determine to select other specific correction of the flank shape coefficients according to actual gear service condition in other embodiments.Certainly, in other embodiments, grinding wheel also can adopt the walking curve of other types, obtains corresponding arc section and the intersection of teeth 11 flank of tooth, as being circular arc intersection.
In the embodiment above, in order to ensure the installation of gear preferably, the first parabolical summit is positioned at the mid point of steamboat 2 teeth 11 axial direction.
In order to improve the ekaconjugation characteristic of face gear 1 in the present embodiment, in the present embodiment, opposite gear 1 axial direction carries out the correction of the flank shape also having carried out flank profil direction in the process of correction of the flank shape.Pinion gear teeth Number and form in the present embodiment becomes the gear shaper cutter number of teeth of face gear 1 identical, instead of realizes face gear 1 contact as made bull wheel produce the form having a 2-3 number of teeth difference between shape wheel 3 and steamboat 2 in prior art, obtains Local conjugation face gear pair.Steamboat 2 flank profil cross section on standard flank profil basis, carries out correction obtain.Equally, introduce virtual outside cutting surface and steamboat 2 is cut, to realize the description to steamboat 2 structure.With plane cutting steamboat 2 teeth 11 perpendicular to steamboat 2 axial direction, the intersection of the cross section obtained and steamboat 2 flank of tooth is the second parabola.As previously mentioned, parabola shaped have good transition characteristic, smooth transition when gears meshing can be made to contact, prevent vibration produce.For when ensureing that steamboat 2 and face gear 1 engage, point of contact is positioned at the neutral position of steamboat 2 and face gear 1 teeth 11, the second parabolical summit is arranged on the zone line of teeth 11 short transverse, preferably can be the pitch circle position of steamboat 2.Second parabolical correction of the flank shape coefficient between 0.01-0.02, can be selected according to practical situations.In actual processing, steamboat 2 flank profil is directly obtained by gear shaper cutter gear shaping or hobcutter gear hobbing, and in order to obtain steamboat 2 flank profil of the second parabolic shape, the shape of gear shaper cutter or hobcutter should have does corresponding processing according to the second parabolic shape.It should be noted that, in actual production, the gear shaper cutter adopted or the surface of hobcutter are the second parabolic shape of standard, and certain change can be there is because of processing technology in the obtain after Gear Shaping second parabolical shape, but the situations such as its slope of curve still meet the second parabolical general condition, namely in the present embodiment, the curve of said flank profil is not meet the second parabola completely, but has some to change.
Through above description, teeth 11 shape of the steamboat 2 in the present embodiment can be obtained as shown in Figure 2, owing to carrying out correction of the flank shape process for straight-sided flank gear pair in the present embodiment, the steamboat 2 obtained is also straight toothed spur gear substantially, and on flank profil direction, the straight-tooth flank profil of the second parabola and master gear 4 is tangential on a bit of gear neutral position.Owing to have employed correction method as above, improve face gear pair transmission to the fault tolerance of alignment error; When face gear 1 and steamboat 2 engagement driving, theoretical contact points has certain angle at tooth length direction and tooth depth direction, reduces the possibility of EDGE CONTACT, and obtains the parabola driving error that Open Side Down, improve the meshing performance of face gear 1 transmission.
It should be noted that, the present embodiment accompanying drawing use only straight toothed spur gear and carries out correction of the flank shape process as steamboat 2, because helical gear or gear with curved teeth obtain by straight toothed spur gear simple transformation, be appreciated that above steamboat 2 correction of the flank shape also can be applicable on helical gear or gear with curved teeth.
Face gear pair in above the utility model embodiment is described in detail.Apply specific case herein to set forth principle of the present utility model and mode of execution; the explanation of above embodiment just understands core concept of the present utility model for helping; when not departing from the utility model principle; also can carry out some improvement and modification to the utility model, these improve and modify and also fall in protection domain of the present utility model.
Claims (7)
1. a face gear pair, comprises face gear (1) and the steamboat (2) with described gear (1) engagement fit; It is characterized in that: be parallel to teeth (11) the formation arc section that described steamboat (2) axial plane cuts described steamboat; Described arc section thickness is reduced to both sides gradually by centre; The intersection of described arc section and described teeth (11) flank of tooth is curve.
2. according to claim 1 gear pair, is characterized in that: the intersection of described arc section and described teeth (11) is the first parabola.
3. according to claim 2 gear pair, is characterized in that: described first parabolical summit is positioned at the mid point of described teeth (11) axial direction.
4. according to claim 1 gear pair, is characterized in that: the intersection of described arc section and described teeth (11) is circular curve.
5. the face gear pair according to any one of claim 1-4, is characterized in that: it is identical that the number of teeth of described steamboat (2) and the product shape forming described gear (1) take turns (3) number of teeth; Perpendicular to described steamboat (2) axis plane cutting described in teeth (11) formed flank profil cross section; The intersection of described flank profil cross section and described teeth (11) flank of tooth is the second parabola.
6. according to claim 5 gear pair, is characterized in that: described second parabolical summit is positioned at the zone line of described teeth (11).
7. the face gear pair according to any one of claim 1-4, is characterized in that: described gear pair is spur gear pair, helical gear pair or curved tooth wheel set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633105.0U CN205036785U (en) | 2015-08-20 | 2015-08-20 | Face gear pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633105.0U CN205036785U (en) | 2015-08-20 | 2015-08-20 | Face gear pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036785U true CN205036785U (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520633105.0U Expired - Fee Related CN205036785U (en) | 2015-08-20 | 2015-08-20 | Face gear pair |
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| CN (1) | CN205036785U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481780A (en) * | 2016-10-12 | 2017-03-08 | 湖南工业大学 | A kind of face polishing gear edge by use height and tip relief method for determination of amount |
| CN107035819A (en) * | 2015-08-20 | 2017-08-11 | 重庆齿轮箱有限责任公司 | A kind of face gear pair |
| CN107061691A (en) * | 2017-04-13 | 2017-08-18 | 南京航空航天大学 | Anchor ring gear-face gear drive and anchor ring gear working method |
-
2015
- 2015-08-20 CN CN201520633105.0U patent/CN205036785U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035819A (en) * | 2015-08-20 | 2017-08-11 | 重庆齿轮箱有限责任公司 | A kind of face gear pair |
| CN106481780A (en) * | 2016-10-12 | 2017-03-08 | 湖南工业大学 | A kind of face polishing gear edge by use height and tip relief method for determination of amount |
| CN106481780B (en) * | 2016-10-12 | 2018-11-27 | 湖南工业大学 | A kind of face gear tip relief height and tip relief method for determination of amount |
| CN107061691A (en) * | 2017-04-13 | 2017-08-18 | 南京航空航天大学 | Anchor ring gear-face gear drive and anchor ring gear working method |
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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: 20160217 Termination date: 20210820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |