WO2013004029A1 - 基于线面共轭的摆线行星传动齿轮 - Google Patents

基于线面共轭的摆线行星传动齿轮 Download PDF

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Publication number
WO2013004029A1
WO2013004029A1 PCT/CN2011/077632 CN2011077632W WO2013004029A1 WO 2013004029 A1 WO2013004029 A1 WO 2013004029A1 CN 2011077632 W CN2011077632 W CN 2011077632W WO 2013004029 A1 WO2013004029 A1 WO 2013004029A1
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Prior art keywords
gear
tooth
line
cycloidal
pin
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PCT/CN2011/077632
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English (en)
French (fr)
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陈兵奎
钟晖
易文翠
左俊
华成丽
贺舒
李海翔
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重庆大学
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Publication of WO2013004029A1 publication Critical patent/WO2013004029A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/08Profiling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/28Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear

Definitions

  • the present invention relates to a cycloidal planetary transmission gear, and more particularly to a linear conjugate oscillating planetary transmission gear. Background technique
  • the traditional cycloidal (internal and external cycloidal) pinwheel planetary transmission has the characteristics of large transmission ratio, good rigidity, compact structure and high transmission precision. It has been widely used in various fields of national defense industry and national economic construction in recent years.
  • the meshing pair of the cycloidal planetary transmission is generally composed of a cycloidal wheel and a pin wheel, and the equidistant curve of the trochoidal line and the cylindrical surface constitute a conjugate meshing pair, and the wheel of the cycloidal gear tooth and the pin wheel tooth profile are engaged.
  • the tooth contact line is a straight line.
  • the line contact profile has the following disadvantages:
  • the friction and sliding rate between the tooth surfaces are large, and the sliding is the main factor that causes the tooth surface to wear, generates heat and power loss, reduces efficiency, and shortens the life.
  • the gear ratio of the cycloidal gear, the transmission accuracy, the transmission efficiency and the service life have put forward higher requirements.
  • the advantage of point contact gear protrusion is that it can greatly reduce the slip rate due to its nearly pure rolling engagement.
  • the commonly used point contact gears are bevel gears and arc gears, but the bevel gears are only used in specific situations.
  • the arc gears have some shortcomings such as bearing capacity and transmission accuracy and cannot be used in the field of precision transmission.
  • the present invention proposes a gear which can combine the advantages of the conventional cycloidal wheel and the point contact gear with high load bearing, high efficiency and high precision, and the gear can meet the requirements of the current social production gear.
  • a cycloidal planetary transmission gear based on a line-plane conjugate comprising a cycloidal pinion planetary transmission meshing pair, wherein one gear tooth profile of the cycloidal pinion planetary transmission meshing pair remains unchanged, and the other gear tooth surface is a tubular meshing surface
  • the tubular engaging surface is a spherical enveloping surface of the spherical center moving along the equidistant line ⁇ ( 3 ), and the equidistant line ⁇ ( 3 ) is a smooth curve along the curve ⁇ main normal direction of the distance r,
  • the curve is a smooth curve on the tooth surface of one of the meshing pairs of the cycloidal pinion planetary transmission.
  • the normal direction is consistent with the normal direction of the tooth surface, and the curve ⁇ (2) forms a line with the other gear tooth surface of the meshing pair.
  • Conjugate meshing the spherical radius of the sphere in the sphere is an equidistance curve and a smooth curve ⁇ (the distance r between the r and r is smaller than the minimum radius of curvature of the original tooth surface meshing segment.
  • the ridge line on the tubular engaging surface is a smooth curve ⁇ (the equation of the smooth curve ⁇ (the equation is:
  • 0 is the ball family parameter and also the pin tooth angle parameter, which is the outer circle radius of the cylindrical surface of the pin tooth, which is the circle radius of the center of the pin tooth ⁇ , A is the pin tooth engaged in the meshing Minimum corner and maximum corner.
  • the equation of the meshing tube formed by the equidistance curve is a spherical track:
  • ⁇ 7 and ⁇ are the ball parameters
  • 0 is the ball family parameter and also the pinion angle parameter
  • ⁇ * ⁇ is the needle
  • the minimum rotation angle and the maximum rotation angle of the teeth participating in the engagement, r equidistant amount, A is the difference between the radius of the original cylindrical tooth surface and the equidistant amount.
  • the tubular engaging surface is a pin tooth surface
  • the external gear is a cycloidal wheel and the internal gear is an engaging pair of the pin wheel
  • the contact line equation of the cycloidal tooth profile is:
  • the tubular engaging surface is a pin tooth surface
  • the internal gear is a cycloidal wheel and the external gear is an engaging pair of the pin wheel
  • the contact line equation of the cycloidal tooth profile is:
  • tubular engaging surface may also be a cycloidal tooth surface.
  • the invention has the advantages that: the invention changes the cycloidal pinion planetary transmission to the line-side conjugate meshing pair, and the meshing process is point contact.
  • the meshing can be almost purely rolling, which can greatly reduce the sliding rate, thereby greatly improving the efficiency and the service life.
  • the sliding rate is reduced by at least one order of magnitude compared to the ordinary cycloidal pinion pair under the same conditions; compared with the conventional cycloidal pin wheel, it is easy to machine because it has no pin gear pin and pin gear sleeve. It is necessary to leave a certain amount of allowance for the needle wheel, and the grinding machine can grind the tooth profile of the needle wheel, which can reduce the processing cost and improve the machining precision, thereby ensuring better transmission accuracy of the conjugated cycloidal planetary transmission. .
  • 1 is a schematic view of a linear conjugate cycloidal planetary transmission according to an embodiment of the present invention
  • 2 is a schematic view of a cycloidal pin gear engagement tube according to an embodiment of the present invention
  • FIG. 3 is a schematic view of a single-tooth meshing tube of a needle tooth according to an embodiment of the present invention
  • Fig. 5 is a schematic view showing the tooth profile of a single tooth of the embodiment of the present invention.
  • FIG. 1 is a schematic view of a linear conjugate cycloidal planetary transmission according to an embodiment of the present invention
  • FIG. 2 is a schematic view of a cycloidal pinion meshing tube according to an embodiment of the present invention
  • a cycloidal pinion planetary transmission meshing pair one gear tooth profile of the cycloidal pinwheel planetary transmission meshing pair remains unchanged, and the other gear tooth face is a tubular meshing surface, and the tubular meshing surface is a spherical center along the equidistant line group ball movement envelope surface
  • the equidistance line r r is a smooth curve distance along the curve r (primary normal vector direction, the curve r (a teeth surface of the planetary gear cycloid meshing gears a smooth curve whose normal direction is consistent with the normal direction of the flank, and the curve r (consistent with the tooth surface of the other gear in the meshing pair);
  • the spherical radius of the sphere in the sphere is equid
  • the ridge line on the tubular engaging surface is a smooth curve
  • the equation of the smooth curve is:
  • tubular engaging surface is a pin tooth surface, as shown in FIG. 2, taking a hypocycloid meshing pair as an example, a cylindrical spiral ⁇ " is selected on the cylindrical surface of the pin tooth, and its main The equation of the equidistant curve ⁇ ( 3 ) with the vector direction equidistance is r:
  • is the ball parameter and 0 is the ball family parameter and also the pin angle
  • the parameter, ⁇ ⁇ is the minimum rotation angle and the maximum rotation angle of the needle teeth, r equidistance, A is the difference between the radius of the original cylindrical tooth surface and the equidistant amount.
  • FIG. 3 is a schematic view of a single-tooth meshing tube of a pin tooth according to an embodiment of the present invention; the position of the starting point of the actual tooth contact line is:
  • the component 4 is a coordinate system used in an embodiment of the present invention
  • the component 1 is a cycloidal wheel
  • the component 2 is a planetary gear (pin wheel)
  • a movable coordinate system C ⁇ is fixedly connected to the center of the cycloidal wheel and the planetary gear respectively.
  • XiY ⁇ i and 0 2 X 2 Y 2 Z 2 establish an overall fixed coordinate system at the center of the cycloidal wheel. In the initial position, the X and XI axes coincide, the ⁇ 2 axis is parallel to the X axis, the center of the pin tooth has a radius of RZ, the radius of the pin tooth is r z , and the number of teeth of the cycloidal wheel and the planet gear are 3 ⁇ 4 and Z g respectively.
  • the center distance of the wheel (the eccentricity of the input arm bearing) is e.
  • the arm (crank) is used ( ⁇ 02 fixed method, the planet wheel is rotated clockwise around the Z 2 axis by ⁇ angle, according to the relative motion relationship The cycloidal wheel will rotate clockwise by ⁇ with the planet wheel around the 3 ⁇ 4 axis.
  • the two moving coordinate systems are X ⁇ Yw Zihe ⁇ 0 2 ⁇ 2 ⁇ ⁇ 2 ⁇ ⁇ 2 .
  • Figure 5 is a schematic view showing the tooth profile of the pinion of the embodiment of the present invention, wherein the positively rotating pinion engaging tube 41, the actual contact line 42 on the positively rotating pinion engaging tube 41; the counter rotating pin engaging tube 45, The actual contact line 44 on the rotating pin teeth engaging tube 45; the two engaging tubes line 43.
  • hypocycloid profile contact line equation of the embodiment provided by the present invention is:

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Abstract

一种基于线面共轭的摆线行星传动齿轮,涉及一种摆线行星传动齿轮,包括摆线针轮行星传动啮合副,在啮副中一个齿轮的齿面上选取一条光滑曲线Γ(2),其主法矢方向和该齿面法线方向一致,曲线Γ(2)与啮合副中另一齿轮齿面形成线面共轭啮合;所述齿轮的齿面为管状啮合面,管状啮合面为球心沿等距线Γ(3)运动的球族包络面∑(3),等距线Γ(3)为沿曲线Γ(2)主法矢方向相距r的光滑曲线,球族中球体的球半径为等距曲线Γ(3)与光滑曲线Γ(2)之间的距离r,r小于原齿面啮合段的最小曲率半径。通过改变摆线针轮行星传动为线面共轭啮合副,其啮合过程为点接触,传动比大、刚性好、结构紧凑、传动精度高,可使其啮合近似纯滚动,可大大降低滑动率,从而大大提高效和使用寿命,加工简单且精度高。

Description

基于线面共轭的摆线行星传动齿轮 技术领域
本发明涉及一种摆线行星传动齿轮,特别涉及一种线面共轭的摆线行星传动 齿轮。 背景技术
传统的摆线 (内、 外摆线) 针轮行星传动具有传动比大、 刚性好、 结构紧 凑、传动精度高等特性,在近年来在国防工业及国民经济建设的各个领域获得了 广泛的应用。摆线类行星传动的啮合副一般由摆线轮和针轮构成, 由变幅摆线的 等距曲线和圆柱面构成共轭啮合副,摆线轮齿廓和针轮齿廓啮合时的轮齿接触线 是一条直线。 线接触齿廓具有以下不足: 相啮齿面间的摩擦和滑动率大, 滑动是 齿面产生磨损、 产生热量和功率损耗、 降低效率、 縮短寿命的主要因素; 随着生 产和科技的发展, 对摆线齿形的传动比、传动精度、传动效率和使用寿命等提出 了更高的要求。点接触齿轮突出的优点是因其近似纯滚动啮合, 可大幅度降低滑 动率。 目前常用的点接触齿轮是锥齿轮和圆弧齿轮,但是锥齿轮只使用于特定场 合, 圆弧齿轮存在着承载能力和传动精度等一些缺点不能用于精密传动领域。
因此当前需要一种能兼具传统摆线轮和点接触齿轮优点的具有高承载、高效 率、 高精度的齿轮。
发明内容
有鉴于此, 为了解决上述问题,本发明提出一种能兼具传统摆线轮和点接触 齿轮优点具有高承载、 高效率、 高精度的齿轮, 该齿轮能够满足当前社会生产对 齿轮的要求。
本发明的目的是这样实现的:
基于线面共轭的摆线行星传动齿轮,包括摆线针轮行星传动啮合副,所述摆 线针轮行星传动啮合副中一个齿轮齿廓保持不变, 另一个齿轮齿面为管状啮合 面,所述管状啮合面为球心沿等距线 Γ(3)运动的球族包络面,所述等距线 Γ(3)为沿 曲线 ^主法矢方向相距 r的光滑曲线, 所述曲线 为摆线针轮行星传动啮合副 中一个齿轮齿面上的一条光滑曲线,其法矢方向和该齿面法线方向一致,曲线 Γ(2) 与啮合副中另一齿轮齿面形成线面共轭啮合;所述球族中球体的球半径为等距曲 线 与光滑曲线 Γ( 之间的距离 rr小于原齿面啮合段的最小曲率半径。 进一步,所述管状啮合面为针齿齿面时,所述管状啮合面上的脊线为光滑曲 线 Γ( , 所述光滑曲线 Γ( 的方程为:
Figure imgf000004_0001
1<θ<φ2) 式中, 0为球族参数同时也是针齿转角参数, 为针齿圆柱面的外圆半径, 为针齿中心分布圆半径^、 A为针齿参与啮合的最小转角和最大转角。
进一步, 所述管状啮合面为针齿齿面时, 所述以等距曲线 为球心轨迹所 形成的啮合管的方程为:
¾ = r cos m cos γ + Acos θ
y2 = r cos GT sin χ + Asin θ +
z2 = r sin GT + f (Θ)
φ(πτ,γ,θ)≡ (rmγθ) = ( f '(^)sincT + ACOSGT sin(/ -0) = 0
(0≤ GT≤ 2π·, 0<γ<2π· φ1<θ<φ2) 式中, ^7、 ^为球参数, 0为球族参数同时也是针齿转角参数, Φ * ^为针 齿参与啮合的最小转角和最大转角, r等距量, A为原针齿圆柱面半径与等距量 之差。
进一步,所述管状啮合面为针齿齿面时,外齿轮为摆线轮和内齿轮为针轮的 啮合副, 其摆线轮齿廓接触线方程为:
X! = sin(l + \)a - e sin (ct ) + rz cos((l + i)ct -Θ)
= cos(l + \)a - e cos (« ) - rz sin((l + i)ct -Θ) (θ,α) = η1·ν1 (12) =0
1<θ<φ2) 式中, 为针齿中心分布圆半径, 为针齿圆柱面的外圆半径, 两轮中心 距为 e。 为转化机构中行星轮绕其轴逆时针旋转角, 1 = Zb/Zg ZbZg为内齿轮 和行星轮的齿数, ηι为外摆线啮合副的针齿齿廓接触线法矢, νί12)为啮合点处针 轮与摆线轮的相对运动速度矢量。
进一步,所述管状啮合面为针齿齿面时, 内齿轮为摆线轮和外齿轮为针轮的 啮合副, 其摆线轮齿廓接触线方程为:
X! = ^ sin(l - i)a - e sin (ia ) + rz cos((l-i)a -θ)
y! = ^ cos(l - ϊ)α + e cos (ia ) - rz sin((l-i)a -0)
φ(θ,α) = η2·ν2 (21) =0
1<θ<φ2) 式中, η2为内摆线啮合副的针齿齿廓接触线法矢, V 1)为啮合点处针轮与摆 线轮的相对运动速度矢量。
进一步, 所述管状啮合面亦可为摆线轮齿齿面。
本发明的优点在于: 本发明通过改变摆线针轮行星传动为线面共轭啮合副, 其啮合过程为点接触。在既保持摆线针轮行星传动传动比大、刚性好、结构紧凑、 传动精度高等优点的基础上, 可使其啮合近似纯滚动, 可大大降低滑动率, 从而 大大提高效率和使用寿命。滑动率与相同条件下的普通摆线针轮啮合副相比, 降 低至少一个数量级; 加工上和传统的摆线轮针轮相比, 因没有针齿销和针齿套, 故易于加工, 只需对针轮留一定余量, 利用数控磨床对针轮齿廓进行磨削即可, 可减少加工成本, 并提高加工精度, 从而保证线面共轭的摆线行星传动具有更好 的传动精度。
本发明的其它优点、 目标和特征在某种程度上将在随后的说明书中进行阐 述, 并且在某种程度上,基于对下文的考察研究对本领域技术人员而言将是显而 易见的, 或者可以从本发明的实践中得到教导。本发明的目标和其它优点可以通 过下面的说明书, 权利要求书, 以及附图中所特别指出的结构来实现和获得。
附图说明
为了使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发 明作进一步的详细描述, 其中:
图 1为本发明实施例线面共轭摆线行星传动示意图; 图 2为本发明实施例摆线针齿啮合管示意图;
图 3为本发明实施例针齿单齿啮合管示意图;
图 4为本发明实施例所采用坐标系;
图 5为本发明实施例针齿单齿齿廓示意图。
具体实施方式
以下将结合附图, 对本发明的优选实施例进行详细的描述; 应当理解, 优选 实施例仅为了说明本发明, 而不是为了限制本发明的保护范围。
图 1为本发明实施例线面共轭摆线行星传动示意图,图 2为本发明实施例摆 线针齿啮合管示意图; 如图所示: 基于线面共轭的摆线行星传动齿轮, 包括摆线 针轮行星传动啮合副, 所述摆线针轮行星传动啮合副中一个齿轮齿廓保持不变, 另一个齿轮齿面为管状啮合面, 所述管状啮合面为球心沿等距线 运动的球族 包络面,所述等距线 r( 为沿曲线 r( 主法矢方向相距 r的光滑曲线,所述曲线 r( 为摆线针轮行星传动啮合副中一个齿轮齿面上的一条光滑曲线,其法矢方向和该 齿面法线方向一致, 曲线 r( 与啮合副中另一齿轮齿面形成线面共轭啮合; 所述 球族中球体的球半径为等距曲线 与光滑曲线 之间的距离 r, r小于原齿面 啮合段的最小曲率半径。
作为上述实施例的进一步改进,所述管状啮合面为针齿齿面时,所述管状啮 合面上的脊线为光滑曲线 , 所述光滑曲线 的方程为:
Figure imgf000006_0001
1 < θ < φ2) 式中, 0为球族参数同时也是针齿转角参数, Φ * ^为针齿参与啮合的最小 转角和最大转角。
作为上述实施例的进一步改进,所述管状啮合面为针齿齿面时,如图 2所示, 以内摆线啮合副为例, 在针齿圆柱面上选取圆柱螺旋线 Γ"), 其主矢方向等距量 为 r的等距曲线 Γ(3)的方程为:
Figure imgf000007_0001
1<θ<Φ2) 作为上述实施例的进一步改进,所述管状啮合面为针齿齿面时,所述以等距 曲线 r( 为球心轨迹, 半径为 r的球族包络面, 所形成的啮合管的方程为:
¾ = r cos m cos γ + Acos θ
y2 = r cos GJ sin χ + Asin 0 +
z2 = r sin GJ + f (Θ)
φ(βΐ,γ,θ)≡ (r ,ry,r0) = ( f
Figure imgf000007_0002
+ Acosm ήη(γ -Θ) = 0 (0<m < 2π; 0<γ<2π; φ1<θ<φ2) 式中, ^、 为球参数, 0为球族参数同时也是针齿转角参数, Φ ^为针 齿参与啮合的最小转角和最大转角, r等距量, A为原针齿圆柱面半径与等距量 之差。
本发明提供的实施例所建立的啮合管的方程为:
Figure imgf000007_0003
(0≤ GT≤ 2π·, 0<γ≤2π; φ1<θ<φ2) 图 3为本发明实施例针齿单齿啮合管示意图;其实际齿廓接触线起始点的位 置为:
将螺旋线的起点 K1选择在( 6» = <A,z = 0 )点,终点选择在 Κη ( 6» = Α,ζ = Β ) 点, 这时在针齿齿面上得到第一啮合管 21。 考虑到行星运动有正反转, 故将反向运动的螺旋线的起点 选择在 (6» = Α,ζ = Β)点, 终点 Κη选择 (6» = r-A,Z = 0)在点, 这时在针齿齿面上得到第 二啮合管 22。
图 4为本发明实施例所采用坐标系, 件 1为摆线轮,件 2为行星轮 (针轮), 在摆线轮与行星轮的中心分别建立与之固连的动坐标系 C^XiY^i和 02X2Y2Z2, 在摆线轮中心建立整体固定坐标系 ΟΧΥΖ。 在初始位置, X和 XI 轴重合, Χ2 轴与 X轴平行, 针齿中心分布圆半径为 RZ, 针齿的半径为 rz, 摆线轮与行星轮 的齿数分别为 ¾和 Zg, 两轮中心距 (输入转臂轴承的偏心距)为 e, 为简化问题的 讨论, 采用转臂 (曲柄)(^02固定法, 将行星轮绕 Z2轴顺时针旋转 α角,根据相对 运动关系,摆线轮将随行星轮绕 ¾轴顺时针旋转 β角, 此时两个动坐标系为 X^Yw Zi禾卩 02ΧΥΖ2
图 5为本发明实施例针齿单齿齿廓示意图, 其中正向旋转针齿啮合管 41, 正向旋转针齿啮合管 41上的实际接触线 42; 反向旋转针齿啮合管 45, 反向旋转 针齿啮合管 45上的实际接触线 44; 两啮合管交线 43。
作为上述实施例的进一步改进,本发明提供的实施例的针齿齿廓接触线方程 为: x2 = rz cos θ
¾ = Ρ(^ - )
1 < θ < φ2)
作为上述实施例的进一步改进,本发明提供的实施例的内摆线齿廓接触线方 程为:
Xj = sin(l - \)a - e sin (ict ) + rz cos((l -i)ct - Θ)
= cos(l - i)ct + e cos (ict ) - rz sin ((l -i)ct - Θ)
¾ = (0 -f)
e cos(ct _ 0) _ cos 0(i _ 1) = 0
以上所述仅为本发明的优选实施例, 并不用于限制本发明, 显然, 本领域的 技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 这 样, 倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之 内, 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
1. 基于线面共轭的摆线行星传动齿轮, 包括摆线针轮行星传动啮合副, 其特 征在于: 所述摆线针轮行星传动啮合副中一个齿轮齿廓保持不变, 另一个齿轮 齿面为管状啮合面, 所述管状啮合面为球心沿等距线 r( 运动的球族包络面, 所述等距线 Γ(3)为沿曲线 主法矢方向相距 r的光滑曲线,所述曲线 为摆线 针轮行星传动啮合副中一个齿轮齿面上的一条光滑曲线,其法矢方向和该齿面 法线方向一致, 曲线 与啮合副中另一齿轮齿面形成线面共轭啮合; 所述球 族中球体的球半径为等距曲线 Γ(3)与光滑曲线 之间的距离 r, r小于原齿面 啮合段的最小曲率半径。
2. 根据权利要求 1所述的基于线面共轭的摆线行星传动齿轮, 其特征在于: 所述管状啮合面为针齿齿面时, 所述管状啮合面上的脊线为光滑曲线 r( , 所 述光滑曲线 的方程为:
Figure imgf000010_0001
其中 式中, 0为球族参数同时也是针齿转角参数, 为针齿圆柱面的外圆半 径, 为针齿分布圆半径, φ ^为针齿参与啮合的最小转角和最大转角。
3. 根据权利要求 2所述的基于线面共轭的摆线行星传动齿轮, 其特征在于: 所述管状啮合面为针齿齿面时, 所述以等距曲线 r")为球心轨迹所形成的啮合 管的方程为:
¾ = r cos m cos γ + Acos θ
y2 = r cos GJ sin χ + Asin 0 +
z2 = r sin GJ + f (Θ)
φ(υ7,γ,θ)≡(rm,rY,re) = ( ff(0)sinm + Acosm ήη(γ -Θ) = 0 其中 0≤ ≤2;r; 0<γ<2π; φ1 <θ<φ2 式中, ^7、 ^为球参数, 0为球族参数同时也是针齿转角参数, Φ ^为 针齿参与啮合的最小转角和最大转角, r等距量, A为原针齿圆柱面半径与 等距量之差。
4. 根据权利要求 3所述的基于线面共轭的摆线行星传动齿轮, 其特征在于: 所述管状啮合面为针齿齿面时, 外齿轮为摆线轮和内齿轮为针轮的啮合副, 其 摆线轮齿廓接触线方程为:
Xj = sin(l + \)a - e sin (ct ) + rz cos((l + i)ct -Θ)
= cos(l + \)a - e cos (« ) - rz sin((l + i)ct -Θ)
φ(θ,α) = ηι· ι {12) =0 其中 式中, 为针齿中心分布圆半径, 为针齿圆柱面的外圆半径, 两轮中 心距为 e, 《为转化机构中行星轮绕其轴逆时针旋转角,
Figure imgf000011_0001
zg为内 齿轮和行星轮的齿数, ηι为外摆线啮合副的针齿齿廓接触线法矢, νί12)为啮合 点处针轮与摆线轮的相对运动速度矢量。
5. 根据权利要求 4所述的基于线面共轭的摆线行星传动齿轮, 其特征在于: 所述管状啮合面为针齿齿面时, 内齿轮为摆线轮和外齿轮为针轮的啮合副, 其 摆线轮齿廓接触线方程为:
Xj = ^ sin(l - i)a - e sin (ia ) + rz cos((l-i)a -θ)
= ^ cos(l - ϊ)α + e cos (ia ) - rz sin((l-i)a -0)
φ(θ,α) = η2·ν2 (21) =0 其中 式中, n2为内摆线啮合副的针齿齿廓接触线法矢, V 1)为啮合点处针轮与 摆线轮的相对运动速度矢量。
6. 根据权利要求 5所述的基于线面共轭的摆线行星传动齿轮, 其特征在于: 所述管状啮合面亦可为摆线轮齿齿面。
PCT/CN2011/077632 2011-07-01 2011-07-26 基于线面共轭的摆线行星传动齿轮 WO2013004029A1 (zh)

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