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Helical Gears
        The Helical gears are similar to spur gears but have angled teeth. This helical tooth arrangement enables smoother
        and quieter operation compared to spur gears. Helical gears are commonly used in applications where high torque
        transmission and reduced noise are essential.





















        Here are some key details about helical gears:
           • Tooth Profile: Helical gears have teeth with a helical or spiral shape. The helix angle refers to the angle between
           the tooth’s helix line and the gear’s axis. The teeth are cut at an angle, resulting in a slanted or diagonal orientation.
           The helical tooth profile allows for gradual engagement, which reduces noise and vibration compared to spur gears.
           • Helix Direction: Helical gears can have either a right-hand helix or a left-hand helix. In a right-hand helix
           gear, the helix spirals around the gear in a clockwise direction, while in a left-hand helix gear, the helix spirals
           counterclockwise. The helix direction impacts the direction of the axial force exerted by the gear during operation.

           • Axial Thrust: Due to the helical tooth arrangement, helical gears generate an axial thrust force along the gear’s
           axis. This axial thrust can be both beneficial and challenging to manage. It helps to distribute the load between
           gears but requires proper thrust bearings or other mechanisms to counteract the axial force.
           • Meshing: Helical gears mesh in a similar manner to spur gears. The angled teeth of one gear engage with the
           teeth of the mating gear, resulting in the transmission of rotational motion and torque. The gradual engagement
           of helical gears reduces shock loads and allows for smoother power transmission.
           • Power Transmission:  Helical  gears  efficiently  transmit  power  between  parallel  shafts.  As  the  driving  gear
           rotates, its helical teeth gradually engage with the teeth of the driven gear, transmitting rotational motion and
           torque. The angle of the helical teeth allows for a larger area of contact, enabling higher torque transmission
           capacity compared to spur gears.
           • Noise and Efficiency: Helical gears operate with less noise and vibration compared to spur gears. The gradual
           engagement of helical teeth reduces the impact and noise during meshing. However, helical gears may experience
           some axial thrust and slightly lower efficiency due to the additional friction caused by the helix angle.
        Example: Consider a robotic arm that requires a high torque transmission  with reduced  noise and smooth
        operation. Helical gears can be employed to achieve these requirements. The driving gear attached to the motor
        has helical teeth with a right-hand helix, while the driven gear connected to the robotic arm also has helical teeth
        with a right-hand helix.

        As the motor-driven gear rotates, its helical teeth engage with the helical teeth of the driven gear. The gradual
        meshing of the teeth ensures a smooth transfer of rotational motion and torque. The helical gears’ design reduces
        noise and vibration, providing quieter operation in the robotic arm’s movement.
        Helical  gears  find  applications  in  various  robotic  systems,  including  gearboxes,  robotic  joints,  and  power
        transmission mechanisms. They are particularly useful when high torque capacity, smooth operation, and reduced
        noise are required, making them a preferred choice in many robotics applications.

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