CN109578520A - Rolling friction worm and gear - Google Patents
Rolling friction worm and gear Download PDFInfo
- Publication number
- CN109578520A CN109578520A CN201811325610.3A CN201811325610A CN109578520A CN 109578520 A CN109578520 A CN 109578520A CN 201811325610 A CN201811325610 A CN 201811325610A CN 109578520 A CN109578520 A CN 109578520A
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- CN
- China
- Prior art keywords
- worm
- worm gear
- tooth post
- rolling friction
- gear tooth
- 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.)
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
- F16H1/163—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with balls between the co-operating parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The present invention relates to a kind of transmission device, especially a kind of rolling friction worm and gear, including worm screw (1), worm gear core (2), worm gear tooth post (3), radial thrust bearing (4)；The form of the rolling friction worm and gear is the tooth of traditional standard worm gear to be removed, instead the novel worm gear core (2) after removing worm-gear toothing installs worm gear tooth post (3) above；Worm screw (1) can use traditional cylindrical worm, or use enveloping worm to increase registration, improve bearing capacity；Worm gear tooth post (3) and worm screw (1) flank of tooth are line contacts, worm gear tooth post (3) is mounted on the counterbore of worm gear core (2) above by radial thrust bearing (4), annular array distribution, worm screw (1) rotation pushes worm gear tooth post (3) rotation by rolling friction, worm gear tooth post (3) drives worm gear core (2) rotation by radial thrust bearing (4), realizes the worm gearing of rolling friction.
Description
Technical field
The present invention relates to a kind of transmission device, specifically a kind of rolling friction worm and gear.
Background technique
Worm gearing, which has to compare in mechanical equipment, to be widely applied, such as cylindrical worm gearing transmission, anchor ring snail
Bar transmission and Procedure for Spiroid Gearing.
The form of traditional worm gear does not change much, and is all analogous to the form of gear, drives snail by the rotation of worm screw
The rotation of wheel, but there are bigger sliding frictions, transmission ratio is bigger but abrasion is bigger.
Traditional enveloping worm has bigger registration, and bearing capacity is relatively large, but because there are bigger slidings
Frictional resistance, than more serious, meaning is not very big for abrasion.
Summary of the invention
The present invention is intended to provide a kind of rolling friction worm gearing, sliding to solve existing traditional worm and gear
The bigger problem of kinetic frictional resistances.
For this purpose, the present invention proposes a kind of rolling friction worm gearing, including worm screw (1), worm gear core (2), snail
It takes turns tooth post (3), radial thrust bearing (4)；The form of the rolling friction worm gearing is traditional standard snail
The tooth of wheel removes, instead the worm gear core (2) after removing worm-gear toothing installs worm gear tooth post (3), worm screw (1) above
Traditional cylindrical worm can be used, or uses enveloping worm to increase registration, improves bearing capacity.
Rolling friction worm gearing of the invention, wherein it is a ladder that the worm gear tooth post (3) is whole
Axis shape, one end are cone-apex angle and the equal frustum of a cone of the correspondence cone-apex angle of worm screw axial direction section worm tooth, after mounting this
The reference circle of the frustum of a cone and the reference circle of corresponding worm screw (1) are tangent, and and the corresponding original master worm wheel for generating worm gear core (2)
Reference helix is tangent, this reference circle refers to that the frustum of a cone section arc length on reference circle is equal to 0.5 × worm screw (1) axial tooth
Away from Px, that is, it is equal to transverse tooth thickness on corresponding original reference circle of wormwheel；Worm gear tooth post (3) frustum of a cone height is equal to original master worm wheel tooth
Height is equal to master worm wheel addendum circle arc radius Ra2Fillet radius Rf2, the axis for installing positioning is arranged at frustum of a cone bottom
Shoulder, entire worm gear tooth post (3) choose suitable dimension, i.e., after mounting without chiasma interference and accurate positioning, intensity are enough.
Finally carry out repairing type.
Rolling friction worm gearing of the invention, wherein the worm gear core (2) is that traditional worm gear is removed
Worm-gear toothing respectively chooses one in the reference helix of original traditional standard face width central plane two sides equidistant position
Point makes (to put and generate worm wheel helical line by this by this point straight line vertical with the cylindrical surface where helix
The line in the center of circle of cylindrical body herein) and the angle of face width central plane be 30 ° or other suitable angles, then with
This line is draw direction, by the way that puts distance as the point of height of teeth root above this line and above the helix of aforementioned selection
The plane vertical with this line is to stretch datum level, stretches and correspond to original master worm wheel to worm gear core (2) end face two sides outside
The boss cuboid of the appropriate length size of root circle transverse tooth thickness equal wide, annular array number identical with the corresponding master worm wheel number of teeth
The boss of amount, combines together, then again in the end face of this boss using the aforementioned straight line for being chosen for flange stretch direction as axis
The symmetrical cylindrical bore in both ends is bored, makes the annular step surface of worm gear core (2) radial outside cylindrical bore to corresponding original mark
The distance for that point that the foregoing description is chosen on quasi- reference circle of wormwheel helix is equal to worm gear tooth post (3) and centripetal in installation
Worm gear tooth post (3) reference circle is at a distance from worm gear tooth post (3) crossing point of axes to this annular step surface after thrust bearing (4), together
The counterbore of sample annular array quantity identical with the corresponding master worm wheel number of teeth, this Duan Qianshu " suitable angle ", " appropriate length " refer to
Be to stretch boss cuboid, drilling and installation worm gear tooth post (3), radial thrust bearing (4) and necessary axially position
Entire part, assembly do not have chiasma interference accurate positioning, intensity enough after loosening device.Finally carry out repairing type.
Rolling friction worm gearing of the invention, the worm gear tooth post (3) and worm screw (1) flank of tooth are that line connects
Touching, worm gear tooth post (3) are mounted on the counterbore of worm gear core (2) above, annular array distribution, worm screw by radial thrust bearing (4)
(1) rotation pushes worm gear tooth post (3) rotation by rolling friction, and worm gear tooth post (3) drives worm gear by radial thrust bearing (4)
Core (2) rotation, realizes the worm gearing of rolling friction.
Detailed description of the invention
Fig. 1: specific embodiments of the present invention rolling friction worm gearing assembly schematic diagram；
Fig. 2: specific embodiments of the present invention worm gear core (2) part schematic diagram；
Fig. 3: specific embodiments of the present invention worm gear tooth post (3) part schematic diagram；
Fig. 4: specific embodiments of the present invention worm gear tooth post (3) and adjacent parts assembly relation schematic diagram.
Specific embodiment
Rolling friction worm gearing of the invention as shown in Figure 1:, the worm gear tooth post (3) and worm screw (1)
The flank of tooth is line contact, and worm gear tooth post (3) is mounted on the counterbore of worm gear core (2) above, annular array by radial thrust bearing (4)
Distribution, worm screw (1) rotation push worm gear tooth post (3) rotation by rolling friction, and worm gear tooth post (3) passes through radial thrust bearing
(4) worm gear core (2) rotation is driven, the worm gearing of rolling friction is realized.
As shown in Figure 1, 2: rolling friction worm gearing of the invention, the worm gear core (2) are tradition
Worm gear removes worm-gear toothing, respectively selects in the reference helix of original traditional standard face width central plane two sides equidistant position
A point is taken, makes to put the straight line vertical with the cylindrical surface where helix by this (i.e. by this point and generation worm gear spiral shell
The line in the center of circle of the cylindrical body of spin line herein) and the angle of face width central plane be 30 ° or other suitable angles,
Then using this line as draw direction, by the way that puts distance as tooth root above this line and above the helix of aforementioned selection
The high point plane vertical with this line is to stretch datum level, stretches and correspond to original mark to worm gear core (2) end face two sides outside
The boss cuboid of the appropriate length size of quasi- root circle of wormwheel transverse tooth thickness equal wide, annular array and the corresponding master worm wheel number of teeth
The boss of identical quantity, combines together, then again in the end face of this boss with the aforementioned straight line for being chosen for flange stretch direction
The symmetrical cylindrical bore in both ends is bored for axis, makes the annular step surface of worm gear core (2) radial outside cylindrical bore to correspondence
Originally in master worm wheel reference helix the foregoing description choose that point distance, be equal to installation worm gear tooth post (3) with
And after radial thrust bearing (4) worm gear tooth post (3) reference circle and worm gear tooth post (3) crossing point of axes to this annular step surface away from
From, the counterbore of same annular array quantity identical with the corresponding master worm wheel number of teeth, this Duan Qianshu " suitable angle ", " suitable length
Degree " refers to stretching boss cuboid, drilling and installation worm gear tooth post (3), radial thrust bearing (4) and necessary axial direction
Entire part, assembly do not have chiasma interference accurate positioning, intensity enough after positioning loosening device.Finally carry out repairing type.
As shown in Fig. 1,3,4: rolling friction worm gearing of the invention, the worm gear tooth post (3) are whole
It is a ladder axis shape, one end is the cone-apex angle frustum of a cone equal with the corresponding cone-apex angle of worm screw axial direction section worm tooth,
The reference circle of this frustum of a cone and the reference circle of corresponding worm screw (1) are tangent after installation, and and the corresponding original for generating worm gear core (2)
Come that master worm wheel reference helix is tangent, this reference circle refers to that the frustum of a cone section arc length on reference circle is equal to 0.5 × snail
Bar (1) axial pitch Px is equal to transverse tooth thickness on corresponding original reference circle of wormwheel；Worm gear tooth post (3) frustum of a cone height is equal to original
Master worm wheel tooth is high, that is, is equal to master worm wheel addendum circle arc radius Ra2Fillet radius Rf2, frustum of a cone bottom has for pacifying
Set the shaft shoulder of position, entire worm gear tooth post (3) chooses suitable dimension, i.e., without chiasma interference and positions standard after mounting
Really, intensity is enough.Finally carry out repairing type.
Worm screw (1) preferably uses enveloping worm, improves registration and bearing capacity.
Use the radial thrust bearing (4) and reliable shaft end positioning and locking for bearing radial load and xial feed simultaneously
Device keeps worm gear tooth post (3) installation solid and reliable.
Claims (4)
1. a kind of rolling friction worm and gear, including worm screw (1), worm gear core (2), worm gear tooth post (3), radial thrust bearing (4)；
The form of the rolling friction worm and gear is the tooth of traditional standard worm gear to be removed, instead removing worm-gear toothing
Novel worm gear core (2) later installs worm gear tooth post (3) above, realizes the worm gearing of rolling friction；Snail
Bar (1) can use traditional cylindrical worm, or use enveloping worm to increase registration, improve bearing capacity.
2. rolling friction worm gearing according to claim 1, it is characterised in that wherein worm gear tooth post (3) is whole
Body is a ladder axis shape, and one end is the cone-apex angle frustum of a cone equal with the corresponding cone-apex angle of worm screw axial direction section worm tooth,
The reference circle of this frustum of a cone and the reference circle of corresponding worm screw (1) are tangent after mounting, and generate worm gear core (2) with corresponding to
Originally master worm wheel reference helix is tangent, this reference circle refer to the frustum of a cone section arc length on reference circle be equal to 0.5 ×
Worm screw (1) axial pitch Px is equal to transverse tooth thickness on corresponding original reference circle of wormwheel；Worm gear tooth post (3) frustum of a cone height is equal to original
It is high to carry out master worm wheel tooth, that is, is equal to master worm wheel addendum circle arc radius Ra2- fillet radius Rf2, frustum of a cone bottom is used for
The shaft shoulder of positioning is installed, entire worm gear tooth post (3) chooses suitable dimension, i.e., without chiasma interference and positions standard after mounting
Really, intensity is enough；Finally carry out repairing type.
3. rolling friction worm gearing according to claim 1, it is characterised in that worm gear core (2) therein is
Tradition worm gear is removed worm-gear toothing, in the reference helix of original traditional standard face width central plane two sides equidistant position
Upper one point of each selection makes to put the straight line vertical with the cylindrical surface where helix by this (i.e. by this point and generation
The line in the center of circle of the cylindrical body of worm wheel helical line herein) and the angle of face width central plane be 30 ° or other suitable
Angle, then using this line as draw direction, with by that point above this line and above the helix of aforementioned selection away from
The plane vertical with this line from the point for height of teeth root is to stretch datum level, is stretched to worm gear core (2) end face two sides outside and right
Answer the boss cuboid of the appropriate length size of original master worm wheel root circle transverse tooth thickness equal wide, annular array and corresponding standard
The boss of the identical quantity of the worm gear number of teeth, combines together, is then chosen for flange stretch side in the end face of this boss again with aforementioned
To straight line be axis bore the symmetrical cylindrical bore in both ends, make the ring-shaped step of worm gear core (2) radial outside cylindrical bore
The distance for that point that the foregoing description is chosen on face to the original master worm wheel reference helix of correspondence, is equal in installation worm-gear toothing
Worm gear tooth post (3) reference circle and worm gear tooth post (3) crossing point of axes to this annular table after column (3) and radial thrust bearing (4)
The distance of terrace, the counterbore of same annular array quantity identical with the corresponding master worm wheel number of teeth, this Duan Qianshu " suitable angle ",
" appropriate length " refers to stretching boss cuboid, drilling and installation worm gear tooth post (3), radial thrust bearing (4) and must
Entire part, assembly do not have chiasma interference accurate positioning, intensity enough after the axially position loosening device wanted；Finally carry out
Repairing type.
4. rolling friction worm gearing according to claim 1, it is characterised in that worm gear tooth post (3) and worm screw
(1) flank of tooth is line contact, and worm gear tooth post (3) is mounted on the counterbore of worm gear core (2) above by radial thrust bearing (4), annular
Array distribution, worm screw (1) rotation push worm gear tooth post (3) rotation by rolling friction, and worm gear tooth post (3) passes through centripetal thrust force axis
It holds (4) and drives worm gear core (2) rotation, realize the worm gearing of rolling friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325610.3A CN109578520A (en) | 2018-11-08 | 2018-11-08 | Rolling friction worm and gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325610.3A CN109578520A (en) | 2018-11-08 | 2018-11-08 | Rolling friction worm and gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578520A true CN109578520A (en) | 2019-04-05 |
Family
ID=65921820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811325610.3A Pending CN109578520A (en) | 2018-11-08 | 2018-11-08 | Rolling friction worm and gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578520A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219959A (en) * | 2019-06-14 | 2019-09-10 | 成都中良川工科技有限公司 | A kind of worm gear |
| CN112628359A (en) * | 2021-01-11 | 2021-04-09 | 郝子豪 | Rolling worm gear power machine |
| WO2022259264A1 (en) * | 2021-06-10 | 2022-12-15 | Rohan Milind Deshpande | A rotational motion transmission mechanism for non-parallel axes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338195A (en) * | 2010-07-27 | 2012-02-01 | 朱建彬 | Ball worm gear and worm transmission pair |
| CN102364160A (en) * | 2011-11-03 | 2012-02-29 | 曾华良 | Worm wheel and worm transmission system |
| JP2013053666A (en) * | 2011-09-03 | 2013-03-21 | Honda Motor Co Ltd | Worm gear mechanism and method of manufacturing worm gear |
| CN104121327A (en) * | 2014-04-08 | 2014-10-29 | 孙志绮 | Loss-free worm-gear speed reducer with movable and rotary gear teeth |
| CN106224447A (en) * | 2016-07-28 | 2016-12-14 | 电子科技大学 | Screw of Worm Gear |
-
2018
- 2018-11-08 CN CN201811325610.3A patent/CN109578520A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338195A (en) * | 2010-07-27 | 2012-02-01 | 朱建彬 | Ball worm gear and worm transmission pair |
| JP2013053666A (en) * | 2011-09-03 | 2013-03-21 | Honda Motor Co Ltd | Worm gear mechanism and method of manufacturing worm gear |
| CN102364160A (en) * | 2011-11-03 | 2012-02-29 | 曾华良 | Worm wheel and worm transmission system |
| CN104121327A (en) * | 2014-04-08 | 2014-10-29 | 孙志绮 | Loss-free worm-gear speed reducer with movable and rotary gear teeth |
| CN106224447A (en) * | 2016-07-28 | 2016-12-14 | 电子科技大学 | Screw of Worm Gear |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219959A (en) * | 2019-06-14 | 2019-09-10 | 成都中良川工科技有限公司 | A kind of worm gear |
| CN112628359A (en) * | 2021-01-11 | 2021-04-09 | 郝子豪 | Rolling worm gear power machine |
| WO2022259264A1 (en) * | 2021-06-10 | 2022-12-15 | Rohan Milind Deshpande | A rotational motion transmission mechanism for non-parallel axes |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190405 |
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| WD01 | Invention patent application deemed withdrawn after publication |