CN209557585U - Heavy-load type cosine gear double enveloped hourglass worm drives - Google Patents
Heavy-load type cosine gear double enveloped hourglass worm drives Download PDFInfo
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- CN209557585U CN209557585U CN201822124074.2U CN201822124074U CN209557585U CN 209557585 U CN209557585 U CN 209557585U CN 201822124074 U CN201822124074 U CN 201822124074U CN 209557585 U CN209557585 U CN 209557585U
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Abstract
The utility model relates to a kind of heavy-load type cosine gear double enveloped hourglass worm drives, belong to mechanically operated application field, be made of cosine helical gear and enveloping worm, the helical gear transverse profile of cosine is cosine tooth profile, the flank of tooth is cosine helicoid, is process using Hardened gear face wear-resistant material；The two sides of enveloping worm form respectively with the respective sides cosine helicoid of gear for original generatrix according to the spatial conjugate relationship envelope between cosine helical gear and enveloping worm.The utility model transmission ratio is big, and bearing capacity is high, easily realizes that high-precision is processed, reliable transmission is used in the fields heave-load devices such as aerospace, marine settings engineering, high-grade, digitally controlled machine tools, industrial robot.
Description
Technical field
The utility model belongs to the heavily loaded worm-drive in mechanically operated application field more particularly to worm-drive.
Background technique
In mechanical transmission course, worm-drive be mainly used for transmit alternating axis between movement and power, have compared with
The advantages that big single staged transmission ratio, mechanism be compact, stable drive, low noise, small impact vibration.Worm axis and worm gear axis exist
Spatial intersecting makes main movement characteristic be that opposite sliding is larger, and the relative velocity of conjugate tooth profiles contact point is always greater than worm screw or snail
The peripheral speed of wheel, the flank of tooth are also easy to produce glued and abrasive wear.
Worm-drive can be divided into cylindrical worm gearing transmission, enveloping worm drive and Procedure for Spiroid Gearing three categories.Cylindrical worm
Rodent population is few simultaneously for transmission, and bearing capacity is insufficient, low efficiency；Enveloping worm drive is that one kind is small in size, meshing performance is good, more
The high excellent transmission device of tooth engagement, bearing capacity, but there are the deficiencies such as machining accuracy is low.Procedure for Spiroid Gearing has carrying energy
The advantages that power is high, lubrication is good, compact-sized, manufacturing process is simple.Existing worm-drive is worm screw enveloping worm wheel, therefore worm gear
The flank of tooth be it is complex-curved, can not Precise Grinding, tooth accuracy is low, and worm gear surface generally requires valuable antifriction material production, this
Sample needs copper worm wheel and rigid worm screw mating engagement, Lai Tigao antiscuffing capacity.
With the development of science and technology, in fields such as aerospace, marine settings engineering, high-grade, digitally controlled machine tools, industrial robots
Urgent need wants a kind of large carrying capacity, heavy-load type worm-drive with high accuracy.Therefore it can propose that a kind of heavily loaded worm-drive will be big
It is big to improve worm screw bearing capacity and transmission intensity.
Summary of the invention
1, the technical issues of the utility model solves is: the disadvantage for overcoming existing worm-drive bearing capacity low proposes one
Kind has many advantages, such as the heavy-load type cosine gear double enveloped hourglass worm drives that bearing capacity is high, precision is high, can satisfy at a high speed, again
It carries, high-power and efficient transmission requires.
2, the technical scheme adopted by the utility model to solve the technical problem is as follows: the utility model proposes heavy-load type more than
String gear double enveloped hourglass worm drives, transmission are made of cosine helical gear and enveloping worm, and the helical gear flank of tooth of cosine is
Cosine helicoid is process using Hardened gear face wear-resistant material；The two sides of enveloping worm are respectively with more than the respective sides of gear
String helicoid is original generatrix, is formed according to the spatial conjugate relationship envelope between cosine helical gear and enveloping worm.
3, further, the cosine helical gear, transverse profile are cosine tooth profile.
, further, for the helical gear cosine helicoid of cosine using reference circle as boundary, top half is convex surface, lower half
Portion is concave curved surface.
, further, for the flank of tooth of the enveloping worm using reference circle as boundary, top half is concave curved surface, and lower half is evagination
Face.
6, further, the cosine helical gear material is high-carbon chromium steel, and enveloping worm material is medium carbon alloy steel.
7, the remarkable result of the utility model is: heavy-load type cosine gear double enveloped hourglass worm drives remain enveloping worm
The advantages of multi-tooth meshing of transmission.The utility model uses cosine tooth profile helical gear, relative to the involute profile of same parameter, divides
Spend knuckle-tooth thickness it is identical, and outside circle transverse tooth thickness reduce, root circle transverse tooth thickness increase, and cosine curve have symmetry, curve it is upper
Half portion is convex curve, and lower half is concave curve, and cosine tooth profile middle section radius of curvature is very big；According to space meshing principle envelope
The flank profil outside circle transverse tooth thickness of the enveloping worm of formation reduces, and root circle transverse tooth thickness increases, and has corresponding with cosine helical gear
Concave and convex surface is conducive to improve contact strength in this way, increases the bearing capacity of transmission；And concave and convex surface conjugation transmission, subtracts
Small sliding ratio.Heavy-load type cosine gear double enveloped hourglass worm drives can utilize the grinding of high-precision gear grinding machining tool, pass
Dynamic pair machining accuracy is high, at low cost.
Detailed description of the invention
Fig. 1 is a kind of heavy-load type cosine gear double enveloped hourglass worm drives mesh schematic representation of the utility model；
Fig. 2 is a kind of cosine helical gear of heavy-load type cosine helical gear double enveloped hourglass worm drives of the utility model；
Fig. 3 is a kind of enveloping worm of heavy-load type cosine helical gear double enveloped hourglass worm drives of the utility model；
Fig. 4 be under same parameter cosine tooth profile compared with involute profile.
Specific embodiment
It is that a kind of heavy-load type cosine helical gear double enveloped hourglass worm drives of the utility model are made into one in conjunction with attached drawing below
The explanation of step: the utility model proposes heavy-load type cosine gear double enveloped hourglass worm drives, transmission is by 1 He of cosine helical gear
Enveloping worm 2 forms, and the flank of tooth of cosine helical gear 1 is cosine helicoid, is process using Hardened gear face wear-resistant material；Anchor ring snail
The two sides of bar 2 are respectively with the respective sides cosine helicoid of gear for original generatrix, according to cosine helical gear 1 and enveloping worm
Spatial conjugate relationship envelope between 2 forms.
The cosine helical gear, transverse profile be cosine tooth profile, tooth curve be one using its pitch circle as baseline and
The cosine curve of expansion, cosine curve have symmetry, and the upper half of curve is convex curve, and lower half is concave curve, cosine tooth
Wide middle section radius of curvature is very big, so that the helical gear cosine helicoid of cosine is formed using reference circle as boundary, top half is
Convex surface, lower half are concave curved surface；According to the flank of tooth of the enveloping worm of space meshing principle envelope formation using reference circle as boundary, on
Half portion is divided into concave curved surface, and lower half is convex surface.
The utility model uses cosine tooth profile, and relative to the involute profile of same parameter, transverse tooth thickness is identical at reference circle, and tooth
Tip circle transverse tooth thickness reduces, and root circle transverse tooth thickness increases；The flank profil outside circle transverse tooth thickness of enveloping worm reduces, and root circle transverse tooth thickness increases, and
With concave and convex surface corresponding with cosine helical gear, is conducive to improve contact strength in this way, increases the bearing capacity of transmission；And
And concave and convex surface conjugation transmission, reduce sliding ratio.
Claims (5)
1. heavy-load type cosine gear double enveloped hourglass worm drives, which is characterized in that heavy-load type cosine gear double enveloping worm passes
Dynamic to be made of cosine helical gear and enveloping worm, the helical gear flank of tooth of cosine is cosine helicoid, using Hardened gear face wear-resistant material
It is process；The two sides of enveloping worm are oblique according to cosine respectively with the respective sides cosine helicoid of gear for original generatrix
Spatial conjugate relationship envelope between gear and enveloping worm forms.
2. heavy-load type cosine gear double enveloped hourglass worm drives according to claim 1, it is characterised in that: the cosine is oblique
Gear, transverse profile are cosine tooth profile.
3. heavy-load type cosine gear double enveloped hourglass worm drives according to claim 1, it is characterised in that: the cosine is oblique
For the cosine helicoid of gear using reference circle as boundary, top half is convex surface, and lower half is concave curved surface.
4. heavy-load type cosine gear double enveloped hourglass worm drives according to claim 1, it is characterised in that: the anchor ring snail
For the flank of tooth of bar using reference circle as boundary, top half is concave curved surface, and lower half is convex surface.
5. heavy-load type cosine gear double enveloped hourglass worm drives according to claim 1, it is characterised in that: the cosine is oblique
Gear material is high-carbon chromium steel, and enveloping worm material is medium carbon alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124074.2U CN209557585U (en) | 2018-12-18 | 2018-12-18 | Heavy-load type cosine gear double enveloped hourglass worm drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124074.2U CN209557585U (en) | 2018-12-18 | 2018-12-18 | Heavy-load type cosine gear double enveloped hourglass worm drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557585U true CN209557585U (en) | 2019-10-29 |
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ID=68302604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822124074.2U Expired - Fee Related CN209557585U (en) | 2018-12-18 | 2018-12-18 | Heavy-load type cosine gear double enveloped hourglass worm drives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557585U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404493A (en) * | 2018-12-18 | 2019-03-01 | 西华大学 | Heavy-load type cosine gear double enveloped hourglass worm drives |
| CN111396507A (en) * | 2020-04-24 | 2020-07-10 | 芜湖蓓慈电器有限公司 | Design method of worm and helical gear transmission pair |
| CN111536218A (en) * | 2020-05-15 | 2020-08-14 | 重庆大学 | Point-line evolvable enveloping worm transmission pair and working mode thereof |
-
2018
- 2018-12-18 CN CN201822124074.2U patent/CN209557585U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404493A (en) * | 2018-12-18 | 2019-03-01 | 西华大学 | Heavy-load type cosine gear double enveloped hourglass worm drives |
| CN111396507A (en) * | 2020-04-24 | 2020-07-10 | 芜湖蓓慈电器有限公司 | Design method of worm and helical gear transmission pair |
| CN111536218A (en) * | 2020-05-15 | 2020-08-14 | 重庆大学 | Point-line evolvable enveloping worm transmission pair and working mode thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20201218 |