CN1067152C - Double point-line meshing gear - Google Patents
Double point-line meshing gear Download PDFInfo
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- CN1067152C CN1067152C CN97109330A CN97109330A CN1067152C CN 1067152 C CN1067152 C CN 1067152C CN 97109330 A CN97109330 A CN 97109330A CN 97109330 A CN97109330 A CN 97109330A CN 1067152 C CN1067152 C CN 1067152C
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- Prior art keywords
- gear
- involute
- tooth
- transition curve
- curve
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Abstract
The present invention relates to a double-point line meshing gear whose tooth profile curve convex tooth forms involute. The concave tooth forms a transition curve, namely that one half of the tooth height forms involute, and the other half forms a transition curve. When the two double-point line meshing gears A, B are mutually meshed, the involute tooth profile of the gear A and the transition curve tooth profile of the gear B are mutually meshed, and the involute tooth profile of the gear B and the transition curve tooth profile of the other tooth of the gear A are mutually meshed to form double-point contact. In the process of operation, when the involute tooth profiles of the gears A, B are mutually in contact, line mesh is also formed. The present invention has the advantages of easy processing, low noise, small transmission size, high contact strength, high bending strength, etc. and is suitable for power transmission devices and universal speed reducers.
Description
The present invention relates to a kind of new meshing gear of transferring power, be applicable to actuating unit and universal speed reducer.
Chinese patent 88107595.7 discloses Hovekov toothed gearing, it is a kind of Novikov gears with double circular arc tooth profiles, keep and developed the big characteristics of contact strength of the concavo-convex flank profil of single-circular-arc gear, and the work arc surface of making becomes the tooth top part and partly has antisymmetric two circular arc working surfaces with tooth root.In the engagement process of bidentate face contact at least the gear teeth have two-part to be in the state of transferring power, load is split on two contact point of gear surface, thereby has improved flexural strength.But it also exists deficiency, and at first Novikov gears with double circular arc tooth profiles must use special-purpose Novikov gear hob to process, and does not have separability, will descend greatly if be processed with the error bearing capacity.Secondly, this gear does not have transverse contact ratio, thereby must make helical teeth, makes engaging-in end produce very big impact like this in engagement process, and noise is bigger.
The purpose of this invention is to provide a kind ofly have transverse contact ratio and separability, bearing capacity is big, noise is low, the double point-line meshing gear that size is little, can use involute gear hob processing.
The object of the present invention is achieved like this:
The tooth curve double wedge of double point-line meshing gear is an involute, and recessed tooth is a transition curve, and promptly half of tooth depth is involute, and second half is a transition curve.Two double point-line meshing gear A, when B is meshing with each other, the involute profile of gear A is meshed with the transition curve flank profil of gear B, and the involute profile of gear B is meshed with the transition curve flank profil of another tooth of gear A, be that the tooth top part partly has antisymmetric two working surfaces with tooth root, form the two point contact; In operation process, when the involute profile of gear A, B is in contact with one another, form the line engagement again.
The recessed flank profil of the wide and transition curve of involute double wedge of the present invention respectively by under establish an equation determine:
The wide equation of involute double wedge:
y
0=(0.7854+0.3639x
n) m
n/ cos β
Wherein: r-reference radius, φ-roll angle, α
t-transverse pressure angle, β-helix angle
The recessed tooth profile equation of transition curve:
tgr=(x
1-x
c)(y
c-y
1)/[(p
f/cosβ)
2-(y
c-y
1)
2]x
c=0.87m
n-m
nx
ny
c=1.5064m
n/cosβp
f=0.38m
ny
1=1.149m
n/cosβ~1.5064m
n/cosβ
As centre distance a, little, gearwheel number of teeth z
1, z
2, normal module m
n, normal pressure angle α
nAfter given, its helixangle between 10 °~30 °, little, gearwheel modification coefficient x
N1, x
N2Between-0.3~-1.5.
Because its existing transverse contact ratio Face contact ratio is arranged again, thereby the present invention can also be made helical teeth or straight-tooth.
Major advantage of the present invention is:
1, owing to replace dome curved tooth exterior feature, replaces the concave circular arc flank profil,, can use common involute gear hob to process, have the factory of gear hobbing machine all can produce so Gear Processing is easy with the transition curve flank profil with involute profile;
2, because its existing transverse contact ratio Face contact ratio is arranged again, thereby when making helical gear, its contact ratio is big, the impact in the time of can reducing axial the engagement, so the noise ratio Novikov gears with double circular arc tooth profiles is low;
3, because it has transverse contact ratio, thereby the present invention can also make straight-tooth;
4, its transmission size is little, and contact strength and flexural strength are all than involute gear height.
Fig. 1 is the flank profil schematic representation of double point-line meshing gear;
Fig. 2 is the end face mesh schematic representation of a pair of double point-line meshing gear.
Embodiment 1:
a=150、z
1=z
2=36、m
n=4、α
n=20°、B=60、β=23.5°、x
n1=x
n2=-0.73、d
a1=d
a2=155、h
1=h
2=6.9;
Embodiment 2:
a=120、z
1=z
2=30、m
n=4、α
n=20°、B=48、β=14°55′42″、x
n1=x
n2=-0.453、d
a1=d
a2=128、h
1=h
2=8.71;
Embodiment 3:
a=150、z
1=26、z
2=76、m
n=3、α
n=20°、B=60、β=12°20′6″、x
n1=-0.323、x
n2=-1.48、d
a1=80.4、d
a2=227.6、h
1=5、h
2=53。
Wherein: a-centre distance, z
1, z
2-little, the gearwheel number of teeth, m
n-normal module, α
n-normal pressure angle, the B-facewidth, β-helix angle, x
N1, x
N2-little, gearwheel modification coefficient, d
A1, d
A2-little, gearwheel outside diameter circle, h
1, h
2-little, gearwheel tooth depth
Claims (3)
1, a kind of engaging gear is characterized in that: its double wedge tooth curve is an involute, and recessed tooth tooth curve is a transition curve, and promptly half of tooth depth is involute, and second half is a transition curve; Its engagement system is the double dotted line engagement, and promptly gear (A), (B) are when being meshing with each other, and the involute of gear (A) is meshed with the transition curve of gear (B), and the involute of gear (B) is meshed with the transition curve of another tooth of gear (A); Involute at operation process middle gear (A), (B) intermeshes again.
2, engaging gear according to claim 1 is characterized in that: the involute curve of its double wedge exterior feature and the transition curve of recessed flank profil respectively by under establish an equation determine:
The wide equation of involute double wedge:
y
0=(0.7854+0.3639x
n)m
n/cosβ
Wherein: r-reference radius, φ-roll angle, α
t-transverse pressure angle, β-helix angle
tgγ=(x
1-x
c)(y
c-y
1)/[(p
f/cosβ)
2-(y
c-y
1)
2]
x
c=0.87m
n-m
nx
n
y
c=1.5064m
n/cosβ
p
f=0.38m
n
y
1=1.149m
n/cosβ~1.5064m
n/cosβ
3, engaging gear according to claim 1 and 2 is characterized in that: as centre distance (a), and little, the gearwheel number of teeth (z
1, z
2), normal module (m
n), normal pressure angle (α
n) given after, its helixangle between 10 °~30 °, little, gearwheel modification coefficient x
N1, x
N2Between-0.3~-1.5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN97109330A CN1067152C (en) | 1997-12-03 | 1997-12-03 | Double point-line meshing gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN97109330A CN1067152C (en) | 1997-12-03 | 1997-12-03 | Double point-line meshing gear |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1182178A CN1182178A (en) | 1998-05-20 |
CN1067152C true CN1067152C (en) | 2001-06-13 |
Family
ID=5171128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97109330A Expired - Lifetime CN1067152C (en) | 1997-12-03 | 1997-12-03 | Double point-line meshing gear |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1067152C (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104565223B (en) * | 2015-02-02 | 2017-02-22 | 中国地质大学(武汉) | Helical arc gear mechanism meshing transmission in parallel shafts |
CN104595422B (en) * | 2015-02-02 | 2017-02-01 | 中国地质大学(武汉) | Spiral-arc gear mechanism for parallel-shaft external-engaged transmission |
CN106321776B (en) * | 2016-09-26 | 2019-09-17 | 重庆大学 | Helical gear with two point contact tooth curve |
CN107830116B (en) * | 2017-09-21 | 2021-04-13 | 江苏理工学院 | Point-line meshing helical gear pair with large bearing capacity and small vibration |
CN107830115B (en) * | 2017-09-30 | 2020-09-15 | 江苏理工学院 | High-strength low-noise straight gear pair meshed with point line |
CN108775378B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Large-pressure-angle worm lifting mechanism |
CN108561519B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Large-pressure-angle worm transmission mechanism |
CN108626315B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Dotted line meshing worm lifting mechanism |
CN108775379B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Big pressure angle double worm drive mechanism |
CN108591368B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Double-worm dotted line meshing transmission mechanism |
CN108626335B (en) * | 2018-06-01 | 2023-04-28 | 江苏理工学院 | Point-line meshing worm transmission mechanism |
CN110645319B (en) * | 2019-09-24 | 2023-01-24 | 武汉理工大学 | Multi-tooth-profile meshing cylindrical gear transmission |
CN113958686B (en) * | 2021-11-05 | 2023-08-29 | 集美大学 | Novel bionic gear |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1060343A (en) * | 1991-10-24 | 1992-04-15 | 太原工业大学 | Bidirectional circular-arc gear |
CN2220561Y (en) * | 1995-04-10 | 1996-02-21 | 向学雷 | Reverse-positive tangential gear for transmission |
-
1997
- 1997-12-03 CN CN97109330A patent/CN1067152C/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1060343A (en) * | 1991-10-24 | 1992-04-15 | 太原工业大学 | Bidirectional circular-arc gear |
CN2220561Y (en) * | 1995-04-10 | 1996-02-21 | 向学雷 | Reverse-positive tangential gear for transmission |
Also Published As
Publication number | Publication date |
---|---|
CN1182178A (en) | 1998-05-20 |
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Addressee: Wuhan Communication Science &. Technology Univ. Document name: Notification of Expiration of Patent Right Duration |
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