CN103807408B - Axial variable pressure angle gear - Google Patents
Axial variable pressure angle gear Download PDFInfo
- Publication number
- CN103807408B CN103807408B CN201410010206.2A CN201410010206A CN103807408B CN 103807408 B CN103807408 B CN 103807408B CN 201410010206 A CN201410010206 A CN 201410010206A CN 103807408 B CN103807408 B CN 103807408B
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- China
- Prior art keywords
- pressure angle
- gear
- variable pressure
- edge face
- axial variable
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H55/18—Special devices for taking up backlash
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/10—Constructively simple tooth shapes, e.g. shaped as pins, as balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/14—Construction providing resilience or vibration-damping
- F16H55/16—Construction providing resilience or vibration-damping relating to teeth only
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides a kind of axial variable pressure angle gear can effectively eliminating or reduce backlash and return difference.Axial variable pressure angle gear according to the present invention has and the interior edge face of other gears meshing and the exterior edge face relative with interior edge face, at least side in the both sides of the wherein gear teeth of axial variable pressure angle gear have axially variable pressure angle gear axially from the pressure angle of the outside end face change of interior edge face, and the corresponding flanks of the described at least side of the gear teeth respectively forms flank of tooth taper contrary angle to pitch circle region and from tooth root to pitch circle region from tooth top.Therefore, axial variable pressure angle gear according to the present invention effectively can be eliminated or reduce backlash and return difference, and the axial force produced when engaging can be cancelled out each other, thus reaches minimizing vibration & noise, improve bearing capacity and transmission stiffness, the good result increased the service life.
Description
Technical field
The present invention relates to mechanical transmission fields, particularly, relate to a kind of axial variable pressure angle gear that can regulate sideshake.
Background technique
Along with the growth requirement of precision drive, requirements at the higher level are proposed to disappear gap transmission and sideshake adjusting device of realization.In traditional precision gear transmission, in order to realize disappear gap transmission and the adjustable engagement of sideshake, there is complex structure and assemble the shortcomings such as more difficult in conventional technological scheme.For this reason, the Conical Involute Gears (such as US Patent No. 3174356, US3171212 and US5400672) of radial shift is usually adopted to solve the problems referred to above.But for the Conical Involute Gears of radial shift, because top circle is tapered, its slip ratio constantly changes vertically during engagement, directly will increase gear-box wearing and tearing, reduce working life.
In order to overcome above-mentioned shortcoming, Chinese invention patent CN100575750C discloses a kind of adjustable side play and variable thickness gear driving pair, the gear of this gear driving pair is thickening and thinningly realize beveloid gear gradually respectively to the two ends end face axial of tooth from the long middle part of tooth by flank profil, thus control transmission sideshake.In addition, Chinese invention patent CN101285520B discloses a kind of tooth thickness variable cylinder modified gear.This gear adopts coefficient of profile tangential shift dangerous section along gear disk axially by the change of ascending rule, the direction that the coefficient of profile tangential shift dangerous section of the gear teeth two flank of tooth is ascending is identical, thus make two flank of tooth shapes of the gear teeth at a certain angle, eliminate thus or reduce backlash and return difference.
The flank of tooth of the gear disclosed in above-mentioned existing patent documentation is all form angle in one direction, this makes gear inevitably produce axial force when transmission, the axial force produced during gear transmission can cause gear axial float, increases vibration & noise, and reduces working life.In addition, the transverse tooth thickness of the beveloid gear disclosed in above-mentioned existing patent documentation is all thickening at an end face, another end face is thinning, the bearing capacity of the whole flank of tooth and transmission stiffness are reduced to the thinning end of transverse tooth thickness by the thickening end of transverse tooth thickness vertically, in gear transmission, cause contact force distribute uneven phenomenon, more easily cause gear teeth generation fatigue damage.
Summary of the invention
In order to solve the problem, the invention provides and a kind ofly can effectively eliminate or reduce backlash and return difference and the axial variable pressure angle gear that can cancel out each other of axial force.Axial variable pressure angle gear according to the present invention can reduce vibration & noise, thus realizes precision drive, improves bearing capacity and transmission stiffness simultaneously.
Axial variable pressure angle gear according to the present invention has and the interior edge face of other gears meshing and the exterior edge face relative with interior edge face, at least side in the both sides of the wherein gear teeth of axial variable pressure angle gear have axially variable pressure angle gear axially from the pressure angle of the outside end face change of interior edge face, and the corresponding flanks of the described at least side of the gear teeth respectively forms flank of tooth taper contrary angle to pitch circle region and from tooth root to pitch circle region from tooth top, and the thickness on pitch circle of the described gear teeth remains unchanged vertically.
According to an aspect of the present invention, the side of the gear teeth has axially from the pressure angle of the outside end face change of interior edge face.
The pressure angle of the described side of the gear teeth can ascendingly change.
Alternatively, the pressure angle of the described side of the gear teeth also can descendingly change.
According to another aspect of the present invention, the both sides of the gear teeth all have axially from the pressure angle of the outside end face change of interior edge face.
The size of the pressure angle of the both sides of the gear teeth changes according to identical Changing Pattern.
Alternatively, the size of the pressure angle of the both sides of the gear teeth also can change according to different Changing Patterns.
Further, the pressure angle of the gear teeth can change with any one in linear change, parabola change and circular arc change.
Accompanying drawing explanation
Above-mentioned and other side of the present invention and feature present from below in conjunction with accompanying drawing the explanation of embodiment is clear, wherein:
Fig. 1 (a) is the axial variable pressure angle tooth-formation of gear schematic diagram according to the first embodiment of the present invention;
Fig. 1 (b) is the axial variable pressure angle tooth-formation of gear sectional view according to the first embodiment of the present invention;
Fig. 2 is the stereogram of display according to the structure of the axial variable pressure angle gear of the first embodiment of the present invention;
Fig. 3 (a) is axial variable pressure angle tooth-formation of gear schematic diagram according to a second embodiment of the present invention;
Fig. 3 (b) is axial variable pressure angle tooth-formation of gear sectional view according to a second embodiment of the present invention;
Fig. 4 is the stereogram of the structure of the axial variable pressure angle gear shown according to a second embodiment of the present invention;
Fig. 5 is axial variable pressure angle tooth-formation of gear sectional view according to the third embodiment of the invention;
Fig. 6 is axial variable pressure angle tooth-formation of gear sectional view according to a fourth embodiment of the invention; And
Fig. 7 is the outer gearing schematic diagram according to axial variable pressure angle gear pair of the present invention.
Embodiment
The present invention relates to a kind of axial variable pressure angle gear, this axial variable pressure angle gear has and the interior edge face of other gears meshing and the exterior edge face relative with described interior edge face.Axial variable pressure angle gear according to the present invention adopts the form of axial variable pressure angle, the flank of tooth of gear tooth is made to form certain taper angle along Gear axis, axial position and the adjustable meshing backlass of gear is engaged each other by adjustment, thus effectively can eliminate or reduce backlash and return difference, realizing precision drive.In addition, the corresponding flanks of the pressure angle change of axial variable pressure angle gear of the present invention respectively forms flank of tooth taper contrary angle to pitch circle region and from tooth root to pitch circle region from tooth top, this axial force produced when making to engage can be cancelled out each other, thus reduces vibration & noise; And the thickness on pitch circle of the gear teeth remains unchanged vertically, further increase bearing capacity and transmission stiffness, therefore, it is possible to increase the service life.
Particularly, there is according at least side in the both sides of the gear teeth of axial variable pressure angle gear of the present invention the axial pressure angle from the outside end face change of interior edge face of axially variable pressure angle gear, and the corresponding flanks of the described at least side of the gear teeth respectively forms flank of tooth taper contrary angle to pitch circle region and from tooth root to pitch circle region from tooth top.According to the present invention, the pressure angle of wheel flank can axially from the descending or ascending change of the outside end face of interior edge face.When the pressure angle of gear teeth both sides all changes, the size of pressure angle can change according to identical or different Changing Pattern.Such as, when gear teeth pressure at both sides angle changes according to different Changing Pattern, the ascending change of pressure angle of the side of the gear teeth, and the descending change of the pressure angle of opposite side.In addition, the pressure angle of the gear teeth can change with any one in linear change, parabola change and circular arc change.
, enumerate illustrative, non-limiting example of the present invention with reference to the accompanying drawings below, to be described in detail to axial variable pressure angle gear according to the present invention.
Fig. 1 (a), Fig. 1 (b) and Fig. 2 show the axial variable pressure angle gear according to the first embodiment of the present invention.In a first embodiment, the face pressure angle of gear teeth both sides all adopts along gear shaft to from the interior edge face linear variability law ascending towards exterior edge face.The solid line of Fig. 1 represents exterior edge face profile of tooth, represented by dotted arrows interior edge face profile of tooth.From left side flank profil, 1A-3A section is exterior edge face large pressure angle involute profile, and 2A-4A section is the little pressure angle involute profile of interior edge face, and 5A is pitch circle.Cross section IA and cross section IIA is respectively the cross section of the upper and lower two sections of somewhere involute gear tooths of pitch circle.8A and 9A is respectively the left and right profile of tooth schematic diagram of cross section IA, 6A and 7A is respectively the left and right profile of tooth schematic diagram of cross section IIA.Can find out from schematic diagram, on the gear teeth two lateral tooth flank, pitch circle 5A forms the outside angle of taper to the tooth top section flank of tooth, and pitch circle 5A forms the inside angle of taper to the tooth root section flank of tooth, namely corresponding flanks forms the contrary angle (such as 6A and 8A, 7A and 9A) of taper.
Fig. 3 (a), Fig. 3 (b) and Fig. 4 show axial variable pressure angle gear according to a second embodiment of the present invention.The difference of the second embodiment of the present invention and the first embodiment is, gear teeth left flank pressure angle adopts along gear shaft to from the ascending linear variability law of the outside end face of interior edge face, and right flank pressure angle adopts along gear shaft to from the descending linear variability law of the outside end face of interior edge face.Can find out from schematic diagram, on gear teeth left flank, pitch circle 5B forms the outside angle of taper to the tooth top section flank of tooth, and pitch circle 5B forms the inside angle of taper to the tooth root section flank of tooth.On gear teeth right flank, pitch circle 5B forms the inside angle of taper to the tooth top section flank of tooth, and pitch circle 5B forms the outside angle of taper to the tooth root section flank of tooth.That is, corresponding flanks forms the contrary angle (as 6B and 8B, 7B and 9B) of taper.
Fig. 5 is axial variable pressure angle tooth-formation of gear sectional view according to the third embodiment of the invention.In the third embodiment, gear teeth left flank pressure angle adopts along gear shaft to from the ascending linear variability law of the outside end face of interior edge face, and right flank pressure angle is constant.On gear teeth left flank, pitch circle 5C forms the outside angle of taper to the tooth top section flank of tooth, and pitch circle 5C forms the inside angle of taper to the tooth root section flank of tooth, and corresponding flanks forms the contrary angle (as 6C and 8C) of taper.
Fig. 6 is axial variable pressure angle tooth-formation of gear sectional view according to a fourth embodiment of the invention.In the fourth embodiment, gear teeth left flank pressure angle adopts along gear shaft to from the ascending parabola Changing Pattern of the outside end face of interior edge face, and right flank pressure angle adopts along gear shaft to from the ascending linear variability law of the outside end face of interior edge face.On the gear teeth two lateral tooth flank, pitch circle 5D forms the outside angle of taper to the tooth top section flank of tooth, and pitch circle 5D forms the inside angle of taper to the tooth root section flank of tooth, and namely corresponding flanks forms the contrary angle (as 6D and 8D, 7D and 9D) of taper.
At this, the present invention illustrates that the pressure angle of at least side of gear tooth changes with linear or parabola illustratively.Such as, but axial variable pressure angle gear according to the present invention is not limited to this, and the pressure angle of at least side of the gear teeth can change along gear shaft to any rule, changes with circular arc.
Fig. 7 is the outer gearing schematic diagram according to axial variable pressure angle gear pair of the present invention.Gear 10 and gear 11 are respectively the consistent axial variable pressure angle gear of Surface of action pressure angle Changing Pattern, because corresponding flanks forms the contrary angle of taper, therefore by regulating the right axial position of two engaging gears to adjust meshing backlass at the pitch circle two sections flank of tooth.Thus, axial variable pressure angle gear according to the present invention effectively can be eliminated or reduce backlash and return difference, and the axial force produced when engaging can be cancelled out each other, thus reaches minimizing vibration & noise, the good result increased the service life.According to axial variable pressure angle gear of the present invention, thickness on pitch circle remains unchanged vertically, either end cross section transverse tooth thickness is thickening and thinning gradually respectively at pitch circle two sections, in gear transmission, contact force, along gear shaft to being evenly distributed, further increases bearing capacity and the transmission stiffness of whole gear.
Although be illustrated exemplary embodiments of the present invention, obviously it will be understood by those skilled in the art that and can to change when not deviating from spirit of the present invention and principle, its scope limits in claims and its equivalent.
Claims (8)
1. an axial variable pressure angle gear, described axial variable pressure angle gear has and the interior edge face of other gears meshing and the exterior edge face relative with described interior edge face, wherein:
At least side in the both sides of the gear teeth of described axial variable pressure angle gear has the pressure angle axially changed from described interior edge face to described exterior edge face along described axial variable pressure angle gear;
The corresponding flanks of the described at least side of the described gear teeth respectively forms flank of tooth taper contrary angle to pitch circle region and from tooth root to pitch circle region from tooth top; And
The thickness on pitch circle of the described gear teeth remains unchanged vertically.
2. axial variable pressure angle gear according to claim 1, wherein, the side of the described gear teeth has the pressure angle changed from described interior edge face to described exterior edge face along described axis.
3. axial variable pressure angle gear according to claim 2, wherein, the ascending change of pressure angle of the described side of the described gear teeth.
4. axial variable pressure angle gear according to claim 2, wherein, the descending change of pressure angle of the described side of the described gear teeth.
5. axial variable pressure angle gear according to claim 1, wherein, the both sides of the described gear teeth all have the pressure angle changed from described interior edge face to described exterior edge face along described axis.
6. axial variable pressure angle gear according to claim 5, wherein, the size of the pressure angle of the both sides of the described gear teeth changes according to identical Changing Pattern.
7. axial variable pressure angle gear according to claim 5, wherein, the size of the pressure angle of the both sides of the described gear teeth changes according to different Changing Patterns.
8. the axial variable pressure angle gear according to any one of claim 1-7, wherein, the pressure angle of the described gear teeth changes with any one in linear change, parabola change and circular arc change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010206.2A CN103807408B (en) | 2014-01-09 | 2014-01-09 | Axial variable pressure angle gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010206.2A CN103807408B (en) | 2014-01-09 | 2014-01-09 | Axial variable pressure angle gear |
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| Publication Number | Publication Date |
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| CN103807408A CN103807408A (en) | 2014-05-21 |
| CN103807408B true CN103807408B (en) | 2016-03-09 |
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| CN201410010206.2A Active CN103807408B (en) | 2014-01-09 | 2014-01-09 | Axial variable pressure angle gear |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032838A (en) * | 2015-03-12 | 2016-10-19 | 哈尔滨理工大学 | Intelligent design of new-type line-contact space-meshing beveloid gear |
| US10634231B2 (en) | 2016-04-19 | 2020-04-28 | Ford Global Technologies, Llc | Gears with varying pressure angle |
| US20180291997A1 (en) * | 2017-04-10 | 2018-10-11 | Caterpillar Global Mining Llc | Gear tooth geometry for crowd gear assembly on rope shovel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01288664A (en) * | 1988-05-13 | 1989-11-20 | Meidensha Corp | Mechanism for removing backlash of gear |
| KR20020038346A (en) * | 2000-11-17 | 2002-05-23 | 이계안 | Gear |
| JP2007247894A (en) * | 2006-02-15 | 2007-09-27 | Enplas Corp | Gear and gearing device |
| CN201093048Y (en) * | 2007-10-26 | 2008-07-30 | 天津建筑机械厂 | Gradual changing tooth thickness gear |
| CN102207185A (en) * | 2011-06-07 | 2011-10-05 | 南京航空航天大学 | Involute straight tooth cylinder profile shifted gear with modification coefficient changing gradually and axially and manufacturing method |
-
2014
- 2014-01-09 CN CN201410010206.2A patent/CN103807408B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01288664A (en) * | 1988-05-13 | 1989-11-20 | Meidensha Corp | Mechanism for removing backlash of gear |
| KR20020038346A (en) * | 2000-11-17 | 2002-05-23 | 이계안 | Gear |
| JP2007247894A (en) * | 2006-02-15 | 2007-09-27 | Enplas Corp | Gear and gearing device |
| CN201093048Y (en) * | 2007-10-26 | 2008-07-30 | 天津建筑机械厂 | Gradual changing tooth thickness gear |
| CN102207185A (en) * | 2011-06-07 | 2011-10-05 | 南京航空航天大学 | Involute straight tooth cylinder profile shifted gear with modification coefficient changing gradually and axially and manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN103807408A (en) | 2014-05-21 |
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Effective date of registration: 20170809 Address after: 224015 Salt Road, 318, Yancheng City, Jiangsu Patentee after: Jiangsu Zhongli Gear Co., Ltd. Address before: 224051 Yancheng City Lake Lake District, hope road, No. 9, Jiangsu Patentee before: Yangcheng Institute of Technology |
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