BEVEL GEAR Flashcards
gears which are used to transmit motion and power to shafts having intersecting axes
bevel gears
bevel gears whose teeth are straight but the sides are tapered so that they would intersect the
axis at a common point called the pitch cone apex if extended inward
straight bevel gears
bevel gears having equal numbers of driver and driven gear teeth and operate at axes with
right angles
miter gears
the quotient of the pitch, expressed in millimeters, to the number π (or the quotient of the
reference diameter, expressed in millimeters, to the number of teeth)
module
the length of the arc of the pitch circle between two consecutive corresponding profiles which
is measured at the large end of the tooth
circular pitch
the diameter of the pitch circle at the large end of the tooth
pitch diameter
the angle between the elements of the face cone and the pitch cone
addendum angle
the angle between the elements of the root cone and the pitch cone
dedendum angle
the length of teeth along the cone distance
facewidth
the distance from the end of the tooth to the pitch apex
cone distance
the angle formed between an element of the pitch cone and the bevel gear axis, it is the half
angle of the pitch cone
pitch angle
the angle between an element of the back cone and the plane of rotation
back angle
the angle of a cone whose elements are tangent to a sphere containing a trace of the pitch
circle
back cone
the distance along an element of the back cone from the apex to the pitch circle
back cone distance
for assembled bevel gears, the distance from the crossing point of the axes to the registering
surface, measured along the gear axis; ideally it should be identical to the apex to back
mounting distance
the diameter and/or plane of rotation surface which is used in locating the gear in the
application assembly
mounting surface
the sharp corner forming the outside diameter
crown
the distance from the crown to the rear of the gear
crown-to-back
the distance along the axis from apex of pitch cone to a locating registering surface on back
pitch apex to back
the angle formed between a tooth element and the axis of the bevel gear
root angle
the angle between meshing bevel gear axes: also, the sum of the two pitch angles
shaft angle
the between an element of the face cone and its axis
face angle
the angle between an element of the front cone and a plane of rotation
front angle
the portion of the bevel gear tooth near the outer end
heel
