Question: In an orthogonal cutting, the depth of cut is halved and the feed rate is made double. If the chip thickness ratio is unaffected with the changed cutting conditions, what will be the change in actual chip thickness? [IAS 1995] Solution: Chip thickness ratio, also called cutting ratio (rcu), is one important parameter for machining analysis as it indicates the deformation (elongation) of chip in its thickness. Machining is

Question: In an orthogonal cutting operation, the tool has a rake angle of 10°. The chip thickness before the cut is 0.5mm and the cut yields a deformed chip thickness of 1.125 mm. Calculate (i) shear plane angle, and (ii) shear strain for the operation. [IAS 2015] Solution: During machining, the excess material is gradually removed in the form of chip by shearing only. Although shearing takes place over a