Chapter 10
Metal Cutting and Machining Processes
- In orthogonal cutting, the cutting edge of the tool is perpendicular to the direction of cutting speed.
- Material is removed in the form of chips along the shear plane where it is subjected to shear deformation.
- The chip thickness ratio or cutting ratio, r is expressed as
where t = Uncut chip thickness (depth of cut)
tc = Chip thickness
lc = Length of chip
l = Length of uncut material
Vc = Chip velocity
V = Cutting tool velocity.
Since tc > t, therefore, chip thickness ratio is ...
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