一副啮合齿轮的齿间间隙一般为多少

2024-11-01 05:59:12
推荐回答(3个)
回答(1):

用公式计算:jnmin2=2α(α1△t1-α2△t2)sinαn(1)

式中:jnmin2——温度补偿侧隙,mm;

a——齿轮副中心距,mm;

α1,α2——齿轮、箱体材料的线膨胀系数,1/℃;

Δt1、Δt2——齿轮、箱体工作时相对于标准温度的温差,℃

αn——法向压力角。

1.2.2因齿轮加工、安装误差导致侧隙减小值

K=[f2pb1+f2pb2+(Fβcosαn)2+(fxsinαn)2+

(fycosαn)2]1/2(2)

式中:K——误差补偿侧隙,mm;

fpb1、fpb2——齿轮副的基节极限偏差,mm;

Fβ——齿向公差,mm;

fx、fy——齿轮副轴线x和y方向的平行度公差,mm.

扩展资料

获得侧隙的方法有两种:一种是基齿厚制,即固定齿厚的极限偏差,通过改变中心距基本偏差来获得不同的最小极限侧隙;另一种方法是基中心制,即固定中心距的极限偏差,通过改变齿厚的上偏差来得到不同的最小极限侧隙。

在回转机构的传动中,小齿轮与回转轴承安装在一起,是标准件,齿厚不能改变,为了满足齿轮承受大载荷的需要,小齿轮的厚度不能减小。

参考资料来源:百度百科-齿侧间隙

回答(2):

  一对齿轮装配后,齿侧间隙是固定值。标准直齿圆柱齿轮,是无侧隙啮合的,齿侧间隙为0;齿侧间隙等于一个齿轮节圆齿槽宽减另一个齿轮节圆齿厚的差值。实际齿轮啮合是有侧隙的,通过控制齿厚(齿厚减薄)保证侧隙;根据使用条件(载荷,等)、使用环境(油温,等)。

  齿轮啮合传动时,为了在啮合齿廓之间形成润滑油膜,避免因轮齿摩檫发热膨胀而卡死,齿廓之间必须留有间隙,此间隙称为齿侧间隙,简称侧隙。

  齿侧间隙的存在会产生齿间冲击,影响齿轮传动的平稳性。因此,这个间隙只能很小,通常由齿差来保证。对于齿轮运动设计仍按无齿侧间隙(侧隙为零)进行设计。

  

回答(3):

取决呼用处,即应用场合。
(根据功能,齿轮加工精度,结构,成本,传动的噪音,润滑冷却等判断)
1.精密的传动场合(低速)要求很小,0.003-0.005,速度高最多0.01.同时考虑齿轮直径的大小,合算齿轮的转角误差能否满足传动要求。
2.高速的普通传动,噪音要求低的场合。0.1-0.15,取决润滑压力。
3.普通无要求的传动,就由你来定吧。取决你能承受的加工精度,成本,传动的噪音,润滑冷却。齿轮寿命等情况。可以接受的情况。

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