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Introduction : ➠  The lathe is the oldest machine tool and came into existence from the early tree lathe which was then an important device for rotating and machining a workpiece held between two trees. ➠  For machining purpose, tools were used. ➠  After further development, a wood strip known as lath...

Introduction : ➤  The drilling machine is a very important machine tool in the industry. ➤  Drilling is an operation through which holes are produced in a solid metal by using a revolving tool which is called as drill. ➤  In a drilling machine holes are drilled quickly and at a low cost. ➤  With...