Angles of Single point cutting tool :
1: Side Cutting Edge Angle:
The
angle between side cutting edge and the side of the tool shank is
called side cutting edge angle. It is often referred to as the lead
angle.
2: End Cutting Edge Angle:
The angle between the end cutting edge and a line perpendicular to the shank of the tool shank is called end cutting edge angle.
3: Side Relief Angle:
The
angle between the portion of the side flank immediately below the side
cutting edge and a line perpendicular to the base of the tool.
4: End Relief Angle:
The angle between the end flank and the line perpendicular to the base of the tool is called end relief angle.
5: Back Rake Angle:
The
angle between the face of the tool and line perpendicular to the base
of the tool measures on perpendicular plane through the side cutting
edge. It is the angle which measures the slope of the face of the tool
from the nose, towards the rack. If the slope is downward the nose it is
negative back rake.
6: Side Rake Angle:
The
angle between the face of the tool and a line parallel to the base of
the tool measured on plane perpendicular to the base and the side edge.
It is the angle that measure the slope of the tool face from the cutting
edge, if the slope is towards the cutting edge it is negative side rake
angle and if the slope is away from the cutting edge, it is positive
side rake angle. If there is no slope the side rake angle is zero.
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