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Gears and Cams
In working drawings with teeth cut to a standard shape, individual teeth typically are not shown.
True
Correct Answer:
True
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Gears and Cams
Bevel gear teeth have the same involute shape as teeth on spur gears but are tapered toward the cone apex.
On detail drawings, the worm and gear are usually drawn in the same detail drawing.
Gears are used to transmit power and rotating or reciprocating motion from one machine part to another.
Cams are used to produce regular repeating motions.
The motion of the follower as it rises or falls depends on the shape of the curves in the displacement diagram.
Teeth are spaced by laying out equal angles.
A worm is a screw with a thread shaped like a rack tooth.
Working drawings for bevel gears give both the dimensions of the gear blank and the data necessary for cutting the teeth.
When the follower movement is in a plane parallel to the cam shaft, an irregular cam must be employed.
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