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国际:国外螺旋伞齿轮的产品介绍

2012-09-06 | 浏览量: 892 常州天勋机械科技有限公司
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当需要改变轴的方向旋转时,螺旋伞齿轮是有用的。它们通常安装在相隔90度的轴,但可以被设计为工作在其他角度。
螺旋伞齿轮上的齿可以是直链,螺旋形或准双曲面。直齿锥齿轮直齿轮齿实际上有同样的问题 - 每个齿啮合,它会影响相应的牙一次。
就像与直齿圆柱齿轮,这个问题的解决方案是曲线的齿轮齿。这些涡旋齿啮合就像螺旋齿:接触在齿轮的一端开始,并逐步在整个齿传播。
在直链和螺旋伞齿轮,轴必须是互相垂直的,但它们也必须在同一平面上。如果你要扩展过去的两轴的齿轮,他们会相交。准双曲面齿轮,另一方面,可以从事与在不同的平面中的轴。
使用此功能在许多汽车的差异。差动装置及输入小齿轮的齿圈是两个准双曲面。这允许输入小齿轮将被安装低于环形齿轮的轴线。图7示出了输入小齿轮啮合的环形齿轮的差动。由于汽车的驱动轴连接到输入小齿轮,这也降低了所述驱动轴。这意味着,所述驱动轴不侵入到乘客车厢的汽车一样多,使得更多房间的人及货物...


我厂专业从事小模数齿轮螺旋伞齿轮的测绘与加工,欢迎新老用户联系洽谈!
原文:
Bevel gears are useful when the direction of a shaft’s rotation needs to be changed. They are usually mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well.

The teeth on bevel gears can be straight, spiral or hypoid. Straight bevel gear teeth actually have the same problem as straight spur gear teeth -- as each tooth engages, it impacts the corresponding tooth all at once.
Just like with spur gears, the solution to this problem is to curve the gear teeth. These spiral teeth engage just like helical teeth: the contact starts at one end of the gear and progressively spreads across the whole tooth.

On straight and spiral bevel gears, the shafts must be perpendicular to each other, but they must also be in the same plane. If you were to extend the two shafts past the gears, they would intersect. The hypoid gear, on the other hand, can engage with the axes in different planes.

This feature is used in many car differentials. The ring gear of the differential and the input pinion gear are both hypoid. This allows the input pinion to be mounted lower than the axis of the ring gear. Figure 7 shows the input pinion engaging the ring gear of the differential. Since the driveshaft of the car is connected to the input pinion, this also lowers the driveshaft. This means that the driveshaft doesn’t intrude into the passenger compartment of the car as much, making more room for people and cargo.

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