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    Bevel gear - Wikipedia

    • Bevel gears change the axis of rotation of rotational power delivery and are widely used in mechanical settings. Bevel gear on roller shutter door. Bevel gear lifts floodgate by means of central screw. Two important concepts in gearing are pitch surface and pitch angle. See more

    Overview

    Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are … See more

    Introduction

    Two important concepts in gearing are pitch surface and pitch angle. The pitch surface of a gear is the imaginary toothless surface that you would have by averaging out the peaks and valleys of the individual teeth. The pitch s… See more

    Mitre gears

    Mitre gears are a special case of bevel gears that have equal numbers of teeth. The shafts are positioned at right angles from each other, and the gears have matching pitch surfaces and angles, with a conically-s… See more

    Geometry of a bevel gear

    The cylindrical gear tooth profile corresponds to an involute (i.e. a triangle wave projected on the circumference of a circle), whereas the bevel gear tooth profile is an octoid (i.e. a triangle wave projected on the nor… See more

    Teeth

    There are two issues regarding tooth shape. One is the cross-sectional profile of the individual tooth. The other is the line or curve on which the tooth is set on the face of the gear: in other words the line or curve along whic… See more

    Tooth line

    The teeth on bevel gears can be straight, spiral or "zerol".
    In straight bevel gears, the teeth are straight and parallel to the generators of the cone. This is the simplest form of bevel gear. It res… See more

    Applications

    The bevel gear has many diverse applications such as locomotives, marine applications, automobiles, printing presses, cooling towers, power plants, steel plants, railway track inspection machines, etc.
    For exampl… See more

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    Table of Contents
    Overview
    Introduction
    Mitre gears
    Geometry of a bevel gear
    Teeth
    Tooth line
    Applications
     
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