Gears are used for transmitting power from one part of a machine to another and in tons of mechanical devices. They do several important jobs, but most important, they provide a gear reduction in motorized equipment. how do they do it? gear want to work will have to be pair of gear wheels each other. gear have teeth cut around the edge to stop or to give them or power to slipping. two different size of gear creates lever.
When you have lever you get torque. This is key because, often, a small motor spinning very fast can provide enough power for a device, but not enough torque. And gear can use this power to move many type of mechanical devise as long as the gear type and size are right. And place more the 2 gears in box and often people will start to call it gear box.
Another thing gears do is adjust the direction of rotation. For instance, in the differential between the rear wheels of your car, the power is transmitted by a shaft that runs down the center of the car, and make gear angle in 90 degrees to apply it to the wheels. Or make 60-degree angle for brush cutter to power the head part in order get blade turning. And or hand tool power tool or some other type machine need to do power transmission always will see them.
齒輪用於將動力從機器的一部分傳遞到另一部分以及數噸機械裝置。他們做了幾項重要的工作，但最重要的是，他們提供了機動設備的減速裝置。他們是如何做到的呢？想要工作的齒輪必須是彼此對的齒輪。齒輪在邊緣周圍切齒以停止或給予它們或滑動動力。兩個不同尺寸的齒輪創造槓桿。
當你有槓桿時你會得到扭矩。這是關鍵，因為通常，非常快速旋轉的小型電機可以為設備提供足夠的功率，但扭矩不夠。只要齒輪類型和尺寸合適，齒輪就可以使用這種動力來移動多種類型的機械裝置。並且將2個齒輪放在箱子裡，通常人們會開始稱它為齒輪箱。
齒輪所做的另一件事是調整旋轉方向。例如，在汽車後輪之間的差速器中，動力通過沿汽車中心向下延伸的軸傳遞，並使齒輪角度為90度以將其應用於車輪。或者使刷子為60度角為頭部提供動力以使刀片轉動。而手動工具電動工具或其他一些需要做電力傳輸的機器總會看到它們。
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