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Gear drive cannot tolerate small amount of locational or angular misalignment. Additional gear is required to obtain rotation in same direction.ĭriver and driven shafts can be rotated either in same or opposite direction employing flat or close belt system. It is suitable for medium to larger distance power and motion transmission.ĭriver and driven shafts rotate in opposite directions. It is suitable for short distance power and motion transmission. It cannot provide steep velocity reduction. High speed reduction can be achieved easily.
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#HELICAL GEAR DESIGN IN PRO E DRIVER#
The intermediate flexible element can absorb vibration and thereby protects driver shaft.īelt drive is not preferred for large torque and power transmission. It cannot isolate driver shaft from vibrations on driven shaft.
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Slip in belt drive helps protecting the system from impact and overloading. Gear drive cannot protect the system from impact and overloading. It is non-positive drive as slip and creep occur frequently. It is a positive drive so velocity ratio remains constant. In belt drive, driver and driven shafts are connected by intermediate flexible element (belt). No intermediate flexible element exist between the two shafts. In gear drive, driver and driven shafts are connected by rigid links. Gear drive is one type of engagement drive.īelt drive is one type of friction drive. Table: Differences between gear drive and belt drive Gear Drive Various differences between gear drive and belt drive are given below in table format. On the other hand, belt drive is a friction drive that is specifically suitable for medium to larger distance power transmission. Since it is rigid drive, it can transmit heavy power without noticeable problem. Therefore, gear drive is one engagement type positive drive that is used to transmit motion, torque and power between driver and driven shafts, preferably over short distance. Only gear drive satisfies this condition whereas, other three drives are non-positive drives.
#HELICAL GEAR DESIGN IN PRO E FREE#
A positive drive is free from slip, creep and polygonal effect and thus can provide constant velocity ratio. Gear drive is an example of engagement drive, rigid drive, and positive drive.Īnother criteria of classifying mechanical drives is whether it can provide constant velocity ratio. Here two rigid bodies remain in direct contact, for example gear drive. Opposite to this, a rigid drive does not contain any intermediate element. A flexible drive is one that consists of one intermediate flexible element between the driver and driven shafts, as in case of belt, chain and rope drives. Another criteria of classifying mechanical drives is the presence or absence of flexible element. In engagement drive, power is transmitted by means of successive engagement and disengagement, as in case of chain drive and gear drive. In friction drives, power is transmitted by means of friction force between two mating parts, as in case of belt drive and rope drive. Based on the means of power transmission, such drives can be classified as friction drive and engagement drive. These four mechanical drives can be classified in several ways. Each drive has certain advantages over others and is suitable for specific applications. The transmission system includes four drives (gear drive, belt drive, chain drive and rope drive) and few elements (pulley, sprocket, shaft, key, coupling, brake, clutch, etc.). It can also change the direction of rotation and alter the rotational speed to better match the requirement. Mechanical power transmission system retrieves mechanical power from such prime movers and subsequently delivers the same to the machine unit. are also used in some specific applications. Apart from electric motor, other prime movers such as steam turbine, hydraulic turbine, wind mill, etc. Electric motor is predominantly used as power source for industrial machineries. Every machine requires a source of energy to perform certain task.