英语翻译Spur GearsGears,defined as toothed members transmitting rotary motion from one shaft to another,are among the oldest devices and inventions of man,In about 2600 B,C.the Chinese are known to have used a chariot incorporating a complex series of gears.Aristotle,in the fourth century B ,C,wrote of gears as if they were commonplace.In the fifteenth century A ,D,Leonardo da Vinci designed a multitude of devices incorporating many kinds of gears.Among t

问题描述:

英语翻译
Spur Gears
Gears,defined as toothed members transmitting rotary motion from one shaft to another,are among the oldest devices and inventions of man,In about 2600 B,C.the Chinese are known to have used a chariot incorporating a complex series of gears.Aristotle,in the fourth century B ,C,wrote of gears as if they were commonplace.In the fifteenth century A ,D,Leonardo da Vinci designed a multitude of devices incorporating many kinds of gears.
Among the various means of mechanical power transmission (including primarily gears,belts,and chains),gears are generally the most rugged and durable.Their power transmission efficiency is as high as 98 percent.On the other hand,gears are usually more costly than chains and belts.As would be expected,gear manufacturing costs increase sharply with increased precision---as required for the combination of high speeds and heavy loads,and for low noise levels.(Standard tolerances for various degrees of manufacturing precision have been established by the AGMA ,American Gear Manufacturers Association)
Of the non-ferrous metals,bronzes are most often used for making gears.Nonmetallic gears(nylon and other plastics ) are generally quiet,durable,reasonably priced,and often can operate under light loads without lubrication.Their teeth deflect more easily than those of corresponding metal gears.This promotes effective load sharing among teeth in simultaneous contact.Since nonmetallic materials have low thermal conductivity,special cooling provisions may be required.Furthermore,these materials have relatively high coefficients of thermal expansion,and this may requie installation with greater backlash than metal gears.

直齿圆柱齿轮
齿轮,齿界定为成员转递旋转运动从一个骨干到另一国,是最古老的设备和发明人,在大约2600年乙,角我国是众所周知的曾经使用的战车将一系列复杂的齿轮。亚里士多德,在第四世纪乙,丙,写的齿轮,好象他们是司空见惯。在15世纪甲,丁,
达芬奇设计的多种设备纳入许多种齿轮。
在各种手段的机械动力传输(包括主要的齿轮,皮带,和连锁) ,齿轮,一般是最坚固耐用。其电力传输效率高达百分之九十八。另一方面,齿轮通常费用高于链和安全带。正如预期,
齿轮制造成本急剧增加与提高精度---所需的结合高速重物和低噪声水平。 (标准公差为不同程度的制造精度已经建立的齿轮制造学会,美国齿轮制造商协会)
问题补充:
在非铁金属,铜是最经常用于制造齿轮。非金属齿轮(尼龙和其他塑料)一般安静,耐用,价格合理,而且往往能下运作轻负载无润滑。他们的牙齿更容易偏转高于相应的金属齿轮。这促进有效负载分担牙同时接触。
由于非金属材料导热系数低,特别冷却规定可能需要。此外,这些材料有较高的热膨胀系数,这可能有更大的要求安装反弹比金属齿轮。
在非铁金属,铜是最经常用于制造齿轮。非金属齿轮(尼龙和其他塑料)一般安静,耐用,价格合理,而且往往能下运作轻负载无润滑。他们的牙齿更容易偏转高于相应的金属齿轮。这促进有效负载分担牙同时接触。

齿轮的齿形的成员,定义为从一个轴旋转传送到另一个设备时,最古老的发明,男,大约2600乙、丙。中国是一个已知的战车组成的复合系列齿轮。亚里士多德,在公元四世纪乙、丙、写的齿轮好像他们是司空见惯的事。在十五世纪,D、达芬奇设计的多种设备合并多种齿轮。
在各种不同的方法,主要包括机械传动齿轮,带(链),齿轮,通常是最坚固耐用。他们的电力传输效率高达98%。另一方面,齿轮通常更昂贵的比链和皮带。可以想象,齿轮的制造成本和提高精度的急剧增长的组合———所需的高速度,他们把难担的重担、噪音低的水平。(标准偏差为不同程度的制造精度AGMA业已确立的,美国的齿轮制造协会)。
问题补充
结果是慢表面破坏形式的凹痕和金属腐蚀。这些现象,为清晰,通常称为发生,但这并不是单独的案例实践。两个或更多的可以同时发生。事实上,一种可以促进其他。结果是拉毛的齿面、变更的齿形、共轭运动。失败时显然已经发生的表现不尽人意的,因为噪音、振动、或cverheating。

小KASS:齿轮齿轮的齿形的成员,定义为从一个轴旋转传送到另一个设备时,最古老的发明,男,大约2600乙、丙.中国是一个已知的战车组成的复合系列齿轮.亚里士多德,在公元四世纪乙、丙、写的齿轮好像他们是司空见惯的事.在...