Solid HSS cutters and carbide inserted tooth cutters are commonly used for milling. The permissible cutting speed of an inserted cutter in relation to that of a HSS cutter is :

Twice as much

Five to ten times greater

Smaller

Same

Inclined to each other

Parallel to each other

Opposite to each other

Vertical and inclined

Pantograph milling machine

Universal milling machine

Planetary milling machine

Tracer controlled milling machine

12 mm

75 mm

80 mm

108 mm

Transmit large torque

Provide large speed reduction from worm shaft to worm wheel

Transmit higher speeds

Provide large speed reduction from worm wheel to worm shaft