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  2. Bevel gear - Wikipedia

    en.wikipedia.org/wiki/Bevel_gear

    Bevel gear. Bevel gears are gears where the axes of the two shafts intersect and the tooth -bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. [1] The pitch surface of bevel gears is a cone, known as a pitch cone.

  3. Drill - Wikipedia

    en.wikipedia.org/wiki/Drill

    A lightweight magnetic-mount drill. A drill is a tool used for making round holes or driving fasteners. It is fitted with a bit, either a drill or driver chuck. Hand-operated types are dramatically decreasing in popularity and cordless battery-powered ones proliferating due to increased efficiency and ease of use.

  4. Helix angle - Wikipedia

    en.wikipedia.org/wiki/Helix_angle

    Helix Angle [clarification needed] In mechanical engineering, a helix angle is the angle between any helix and an axial line on its right, circular cylinder or cone. [1] Common applications are screws, helical gears, and worm gears . The helix angle references the axis of the cylinder, distinguishing it from the lead angle, which references a ...

  5. List of gear nomenclature - Wikipedia

    en.wikipedia.org/wiki/List_of_gear_nomenclature

    A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.

  6. Indexing head - Wikipedia

    en.wikipedia.org/wiki/Indexing_head

    Indexing is an operation of dividing a periphery of a cylindrical workpiece into equal number of divisions by the help of index crank and index plate. A manual indexing head includes a hand crank. Rotating the hand crank in turn rotates the spindle and therefore the workpiece. The hand crank uses a worm gear drive to provide precise control of ...

  7. Drill commands - Wikipedia

    en.wikipedia.org/wiki/Drill_commands

    A Polish soldier in the slope arms position. Drill commands are generally used with a group that is marching, most often in military foot drills or in a marching band. [1] [2] [3] Drill commands are usually heard in major events involving service personnel, reservists and veterans of a country's armed forces, and by extension, public security ...

  8. Milling cutter - Wikipedia

    en.wikipedia.org/wiki/Milling_cutter

    Milling cutters are cutting tools typically used in milling machines or machining centres to perform milling operations (and occasionally in other machine tools ). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter's shape (e.g., a form tool such as a hobbing cutter).

  9. Rotary hammer - Wikipedia

    en.wikipedia.org/wiki/Rotary_hammer

    Rotary hammer. Ramset 342 Dyna Drill and Chipping Hammer, shown with chipping chisel. A rotary hammer, also called rotary hammer drill [1] is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. [2] It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning.

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