CN103671821A - Full-tooth-width line-contact helical bevel gear tooth structure - Google Patents
Full-tooth-width line-contact helical bevel gear tooth structure Download PDFInfo
- Publication number
- CN103671821A CN103671821A CN201310562516.0A CN201310562516A CN103671821A CN 103671821 A CN103671821 A CN 103671821A CN 201310562516 A CN201310562516 A CN 201310562516A CN 103671821 A CN103671821 A CN 103671821A
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- Prior art keywords
- tooth
- bevel gear
- helical bevel
- flank
- gear
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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
- F16H55/08—Profiling
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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
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a full-tooth-width line-contact helical bevel gear tooth structure which is characterized in that the surface of a helical bevel gear tooth is a full arc in the tooth length direction. According to the full-tooth-width line-contact helical bevel gear tooth structure, an originally-considered point-contact helical bevel gear is changed. Full-tooth-width line contact is achieved in transmission, the contact area is higher than 90%, the coincidence degree is high, transmission is stable, noise is low, the bearing capacity is high, the tooth-surface oil-containing performance is good, a lubricating oil film can be easily formed, friction and abrasions on the tooth surface are reduced, and the transmission performance of a helical gear is improved comprehensively.
Description
Technical field
The invention belongs to mechanical transmission part manufacturing technology field, specifically just relate to a kind of gear, especially relate to a kind of widths over teeth line contact helical bevel gear.
Background technique
Bevel gear, is that reference surface is the gear of conical surface, is also umbrella gear.Bevel gear drive is that the angle of two between centers can be arbitrarily for transmitting motion and the power between two concurrent aceses.In mechanical transmission, applying maximum is that two crossed axis angles are the Straight Bevel Gear Drive of 90 °.Bevel gear single staged transmission ratio can arrive 6, is up to 8, and transmission efficiency is generally 0.94～0.98.It is several that bevel gear is divided into straight bevel gear, helical bevel gear, spiral bevel gear etc.The axial force of straight bevel gear is little, and noise is larger, for low speed rotation (<5m/s); The contact ratio of helical bevel gear is large, and noise is little; Spiral bevel gear stable drive, noise is little, and bearing capacity is large, and for the occasion of high-speed overload, transmitted power can arrive 3700 kilowatts, more than peripheral velocity can arrive 40 meter per seconds.Bevel gear is widely used in the transmission of automobile, lathe, tractor and other mechanical axes intersect.
In bevel gear, according to the tooth of the gear teeth is rectangular, always see have spur gear and curved tooth cylindrical gear.What the long profile of tooth and pitch cone intersection were straight line is straight bevel gear, if one section of curve is referred to as helical bevel gear.Helical bevel gear is again curve-tooth bevel gear, spiral bevel gear, spiral shell umbrella bevel gear, circular-arc bevel gear, spiral bevel gear etc., be a kind of by stable drive than steadily, the driving parts of low noise transmission.Helical Bevel Gear efficiency is high, and velocity ratio is stable, and circular arc overlap coefficient is large, and bearing capacity is high, and stable drive is smooth-going, reliable operation, and compact structure, energy-conservation material-saving, saves space, and wear-resistant, the life-span is long, and noise is little.In various mechanical transmission, with the transmission efficiency of helical bevel gear, for the highest, all kinds of transmissions especially high-power transmission are had to very large economic benefit; The save space of the driving component transmission that needs while transmitting equal moment of torsion, the bulk more required than belt, chain transmission is little; Helical Bevel Gear is than stable, can meet the requirement to transmission performance in the transmission of all kinds of machinery; Helical bevel gear reliable operation, the life-span is long.
At present, as shown in Figure 1, traditional helical bevel gear gear teeth transmission essence is near facewidth mid point, point contact along tooth depth direction, contact trace is a line from tooth root to tooth top, consider the resiliently deformable of actual tooth contact, actual point of contact is expanded as an ellipsoid, i.e. facet contact.This traditional helical bevel gear is a contact meshed gears, and contact ratio is low, and bearing capacity is poor.Gear mesh flank of tooth texture does not require, and is all the passive lines by processing method self-assembling formation, is all this lines oil-containing of the individual event lines poor performance along tooth length direction, and the flank of tooth is lubricated bad, has a strong impact on the transmission performance of gear.
Summary of the invention
Object of the present invention is exactly to be a contact meshed gears for existing traditional helical bevel gear, contact ratio is low, bearing capacity is poor, flank of tooth lines oil-containing poor performance, lubricated bad, affecting the technological deficiency of transmission properties, a kind of widths over teeth line contact helical bevel gear gear teeth structure is provided, is the contact of widths over teeth line during this gear transmission, contact ratio is high, stable drive, noise is little, and bearing capacity is high, flank of tooth oil-containing performance is good, be easy to form lubricant film, reduce gear tooth friction wearing and tearing, improved the transmission performance of spiral gear comprehensively.
Technological scheme
In order to realize above-mentioned technical purpose, the present invention designs a kind of widths over teeth line contact helical bevel gear gear teeth structure, it is characterized in that: the described helical bevel gear gear teeth flank of tooth is the all-arc along tooth length direction;
The all-arc that two lateral tooth flanks of the described helical bevel gear gear teeth are evagination along tooth length direction one lateral tooth flank, the all-arc that the opposite side flank of tooth is indent, is the curved surface of evagination along tooth depth direction.
Described flank of tooth camber line is circular arc line, involute, cycloid or log spiral.
The texture of the described gear teeth flank of tooth is along the shallow narrow rill of tooth length direction and the cross form texture that forms of the shallow narrow rill along tooth depth direction that intersects with it or be the ring-type curve texture of sealing.
Described cross form texture is rectangle or rhombus.
Spacing between described cross form texture rill is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
Spacing between the ring-type curve texture rill of described sealing is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
Beneficial effect
A kind of widths over teeth line contact helical bevel gear gear teeth structure provided by the invention, this gear has changed the some contact helical bevel gear modified line contact of in the past thinking.Utilize modern precision process equipment on gear teeth face, to process texture, it while being meshed transmission gear, is widths over teeth contact, contact ratio is high, stable drive, noise is little, and bearing capacity is high, flank of tooth oil-containing performance is good, be easy to form lubricant film, reduce gear tooth friction wearing and tearing, improved the transmission performance of spiral gear comprehensively.
Accompanying drawing explanation
Accompanying drawing 1 is existing helical bevel gear gear teeth structure schematic diagram.
Accompanying drawing 2 is widths over teeth line contact helical bevel gear gear teeth structure schematic diagram of the present invention.
Accompanying drawing 3 is rectangle flank of tooth texture schematic diagram in the 1st embodiment in the present invention.
Accompanying drawing 4 is rhombus flank of tooth texture schematic diagram in the 1st embodiment in the present invention.
Accompanying drawing 5 is the 2nd embodiment's flank of tooth texture schematic diagram in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment 1
As shown in Figure 2, a kind of widths over teeth line contact helical bevel gear gear teeth structure, is characterized in that: the described helical bevel gear gear teeth flank of tooth is the all-arc along tooth length direction;
The all-arc that two lateral tooth flanks of the described helical bevel gear gear teeth are evagination along tooth length direction one lateral tooth flank, the all-arc that the opposite side flank of tooth is indent, is the curved surface of evagination along tooth depth direction.
Described flank of tooth camber line is circular arc line or involute or cycloid or log spiral.
As shown in accompanying drawing 3 and 4, the texture of the described gear teeth flank of tooth is along the shallow narrow rill of tooth length direction and the cross form texture that forms of the shallow narrow rill along tooth depth direction that intersects with it,
Described cross form texture is rectangle or rhombus.
Spacing between described cross form texture rill is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
Embodiment 2
As shown in Figure 5, the texture of the described gear teeth flank of tooth can also be the ring-type curve texture of sealing.
Spacing between the ring-type curve texture rill of described sealing is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
The working process of the flank of tooth of the widths over teeth contact of this gear is first to adopt traditional spiral bevel gear generator roughing teeth groove, then according to the some data of flank of tooth curved surface, generate nc program and go out the flank of tooth with numerical control machining center fine finishing, to obtain the flank of tooth of widths over teeth contact.Wherein cross form texture adopts numerical control machining center on the flank of tooth, to process cross form texture, then adopts flank of tooth brightening process (as polishing, grinding the processing methods such as shot-peening) finally to process the flank of tooth, to guarantee that the flank of tooth is smooth.
A kind of widths over teeth line contact helical bevel gear gear teeth structure provided by the invention, this gear has changed the some contact helical bevel gear of in the past thinking.During transmission, be widths over teeth contact, contact ratio is high, stable drive, and noise is little, and bearing capacity is high, and flank of tooth oil-containing performance is good, is easy to form lubricant film, reduces gear tooth friction wearing and tearing, has improved the transmission performance of spiral gear comprehensively.
That in the present invention, mentions refers to relative position all around, rather than absolute position, and the scope of protection of the invention is not limited to the technological scheme that the present embodiment is mentioned, the technological scheme that any the present invention of being subject to enlightens all falls into protection scope of the present invention.
Claims (6)
1. a widths over teeth line contact helical bevel gear gear teeth structure, is characterized in that: the described helical bevel gear gear teeth flank of tooth is the all-arc along tooth length direction;
The all-arc that two lateral tooth flanks of the described helical bevel gear gear teeth are evagination along tooth length direction one lateral tooth flank, the all-arc that the opposite side flank of tooth is indent, is the curved surface of evagination along tooth depth direction.
2. a kind of widths over teeth line contact helical bevel gear gear teeth structure as claimed in claim 1, is characterized in that: described flank of tooth camber line is circular arc line, involute, cycloid or log spiral.
3. a kind of widths over teeth line contact helical bevel gear gear teeth structure as claimed in claim 1, is characterized in that: cross form texture or the ring-type curve texture for seal of the texture of the described gear teeth flank of tooth for forming along the shallow narrow rill of tooth length direction and the shallow narrow rill along tooth depth direction that intersects with it.
4. a kind of widths over teeth line contact helical bevel gear gear teeth structure as claimed in claim 3, is characterized in that: described cross form texture is rectangle or rhombus.
5. a kind of widths over teeth line contact helical bevel gear gear teeth structure as described in claim 3 or 4, is characterized in that: the spacing between described cross form texture rill is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
6. a kind of widths over teeth line contact helical bevel gear gear teeth structure as claimed in claim 3, is characterized in that: the spacing between the ring-type curve texture rill of described sealing is 0.01～3 millimeter, and the rill degree of depth is 0.005～0.05 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562516.0A CN103671821A (en) | 2013-11-12 | 2013-11-12 | Full-tooth-width line-contact helical bevel gear tooth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562516.0A CN103671821A (en) | 2013-11-12 | 2013-11-12 | Full-tooth-width line-contact helical bevel gear tooth structure |
Publications (1)
| Publication Number | Publication Date |
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| CN103671821A true CN103671821A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310562516.0A Pending CN103671821A (en) | 2013-11-12 | 2013-11-12 | Full-tooth-width line-contact helical bevel gear tooth structure |
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| CN (1) | CN103671821A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253114A (en) * | 2017-12-21 | 2018-07-06 | 安徽工程大学 | A kind of Self-lubricating gear with micro- texture |
| CN109114169A (en) * | 2018-10-08 | 2019-01-01 | 天津工业大学 | aviation spiral gear transmission system |
| CN113525072A (en) * | 2020-04-16 | 2021-10-22 | 丰田自动车株式会社 | Drive device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07208582A (en) * | 1994-01-26 | 1995-08-11 | Nissan Motor Co Ltd | Spiral bevel gear type pinion |
| JPH08226526A (en) * | 1994-12-12 | 1996-09-03 | Asmo Co Ltd | Friction reduction structure between members and machining method of slide-contact surface thereof, worm reduction gear |
| CN101118009A (en) * | 2006-07-31 | 2008-02-06 | 株式会社捷太格特 | Conical involute gear and gear pair |
| CN201461897U (en) * | 2009-02-27 | 2010-05-12 | 完颜学明 | Arc spiral cylindrical gear and arc rack |
| CN101878382A (en) * | 2007-11-30 | 2010-11-03 | 通用电气公司 | Textured surfaces for gears |
| CN102889362A (en) * | 2012-10-31 | 2013-01-23 | 浙江大学 | Gear with surface texture tooth surfaces |
| CN103270344A (en) * | 2010-05-27 | 2013-08-28 | 施奥泰尔有限公司 | Load rating optimised bevel gear toothing |
| CN203627714U (en) * | 2013-11-12 | 2014-06-04 | 林菁 | Gear tooth structure of full tooth width line contact spiral bevel gear |
-
2013
- 2013-11-12 CN CN201310562516.0A patent/CN103671821A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07208582A (en) * | 1994-01-26 | 1995-08-11 | Nissan Motor Co Ltd | Spiral bevel gear type pinion |
| JPH08226526A (en) * | 1994-12-12 | 1996-09-03 | Asmo Co Ltd | Friction reduction structure between members and machining method of slide-contact surface thereof, worm reduction gear |
| CN101118009A (en) * | 2006-07-31 | 2008-02-06 | 株式会社捷太格特 | Conical involute gear and gear pair |
| CN101878382A (en) * | 2007-11-30 | 2010-11-03 | 通用电气公司 | Textured surfaces for gears |
| CN201461897U (en) * | 2009-02-27 | 2010-05-12 | 完颜学明 | Arc spiral cylindrical gear and arc rack |
| CN103270344A (en) * | 2010-05-27 | 2013-08-28 | 施奥泰尔有限公司 | Load rating optimised bevel gear toothing |
| CN102889362A (en) * | 2012-10-31 | 2013-01-23 | 浙江大学 | Gear with surface texture tooth surfaces |
| CN203627714U (en) * | 2013-11-12 | 2014-06-04 | 林菁 | Gear tooth structure of full tooth width line contact spiral bevel gear |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253114A (en) * | 2017-12-21 | 2018-07-06 | 安徽工程大学 | A kind of Self-lubricating gear with micro- texture |
| CN108253114B (en) * | 2017-12-21 | 2021-12-10 | 安徽工程大学 | Self-lubricating gear with micro-texture |
| CN109114169A (en) * | 2018-10-08 | 2019-01-01 | 天津工业大学 | aviation spiral gear transmission system |
| CN113525072A (en) * | 2020-04-16 | 2021-10-22 | 丰田自动车株式会社 | Drive device |
| CN113525072B (en) * | 2020-04-16 | 2024-02-20 | 丰田自动车株式会社 | Driving device |
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Application publication date: 20140326 |