| Dişli Çarkların Taşlanması ( Grinding of gears ) |
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•Gears have existed since the invention of rotating machinery. Because of their force-multiplying properties, early engineers used them for hoisting heavy loads such as building materials. The mechanical advantage of gears was also used for ship anchor hoists and catapult pre-tensioning.
•Early gears were made from wood with cylindrical pegs for cogs and were often lubricated with animal fat grease. Gears were also used in wind and water wheel machinery for decreasing or increasing the provided rotational speed for application to pumps and other powered machines. An early gear arrangement used to power textile machinery is illustrated in the following figure. The rotational speed of a water or horse drawn wheel was typically too slow to use, so a set of wooden gears needed to be used to increase the speed to a usable level.
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Bugün 4 ziyaretçi (4 klik) kişi burdaydı! |
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