zezo_am- مـــراقــب عــــام
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تاريخ التسجيل : 11/09/2007
من طرف zezo_am الأربعاء 29 فبراير 2012, 12:52 am
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Types Of Gears | Gear Type | Description | Photo | Spur Gears | Spur gears are by far the most common type of gear and with the exceptions of the "cog" the type of gear that has been around the longest. Spur gears have teeth that run perpendicular to the face of the gear.
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Click Image To Enlarge | Helical Gears | Helical gears are very similar to spur gears except the teeth are not perpendicular to the face. The teeth are at an angle to the face giving helical gears more tooth contact in the same area. Helical gears can also be used on non-parallel shafts to transmit motion. Helical gears tend to run quieter and smoother than spur gears due to the increased number of teeth in constant contact at any one period of time.
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Click Image To Enlarge | Herringbone Gears | Herringbone gears resemble two helical gears that have been placed side by side. They are often referred to as "double helicals".One benefit of herringbone gears is that it helps to avoid issues related to side thrust created with the use of helical gears.
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Click Image To Enlarge | Bevel / Miter Gears | Bevel gears are used mostly in situations that require power to be transmitted at right angles (or applications that are not parallel). Bevel gears can have different angles of application but tend to be 90°. |
Click Image To Enlarge | Worm Gears | Worm gears are used to transmit power at 90° and where high reductions are required. The worm resembles a thread that rides in concaved or helical teeth. |
Click Image To Enlarge | Internal Gears | Internal gears typically resemble inverted spur gears but are occasionally cut as helical gears. |
Click To Enlarge | Racks | A rack is basically a straight gear used to transmit power and motion in a linear movement. |
Click On Image To Enlarge | Face Gears | Face gears transmit power at (usually) right angles in a circular motion. Face gears are not very common in industrial application. |
| Involute Splines | Splined shafts and hubs are usually used as connectors in many different types of applications. One of the most common applications is to connect motors to gear reducers. They may also be used in transmissions.Involute splines resemble spur gears, but tend to have different pressure angles.
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Click Image To Enlarge | Straight Sided Splines | Straight sided splines often serve the same function as involute splines but have "straight sided" teeth instead of involute teeth. |
Click On Image To Enlarge | Sprockets | Sprockets are used to run chains or belts. They are typically used in conveyor systems. |
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